U.S. patent number 3,825,409 [Application Number 05/385,083] was granted by the patent office on 1974-07-23 for panelized suspended furnace roof and improved feed hole.
Invention is credited to Levi S. Longenecker.
United States Patent |
3,825,409 |
Longenecker |
July 23, 1974 |
PANELIZED SUSPENDED FURNACE ROOF AND IMPROVED FEED HOLE
Abstract
A suspended furnace roof is disclosed having an overhead metal
framework involving spaced-apart crossextending girders and
longitudinally extending spaced-apart beams that are adapted to
extend between the girders and to be adjustably positioned in the
spacing therebetween. A basically three-part hanger assembly is
detachably suspended from the beam members and projects downwardly
therefrom to detachably carry refractory tile members that may be
assembled and shipped as a palletized group and, as such a group,
mounted on such a hanger assembly at the construction site and
while carried thereby, moved into a mounted position on an
associated beam to close-off a portion of the furnace roof. A
tertiary or uppermost hanger part of each assembly has a transverse
yoke-like arm that at each of its ends has a flanged member from
which opposed rows of secondary hanger parts are suspended to carry
tile-suspending primary hanger parts. For feeding charging
materials, the furnace roof may have at least one feed hole
construction. This construction is shown as a pivotally and
removably mounted feed and closure door and sealing ring assembly,
and as employed with an assembly of feed hole defining refractory
blocks that are independently carried by a unitary metal frame. The
block assembly is constructed to be moved as a truck unit on the
unitary frame to one side of the furnace roof to facilitate
construction, maintenance and repair work.
Inventors: |
Longenecker; Levi S.
(Pittsburgh, PA) |
Family
ID: |
23519934 |
Appl.
No.: |
05/385,083 |
Filed: |
August 2, 1973 |
Current U.S.
Class: |
432/250;
110/173R |
Current CPC
Class: |
F27D
1/021 (20130101); F27D 2009/0005 (20130101) |
Current International
Class: |
F27D
1/02 (20060101); F27D 9/00 (20060101); F23m
007/00 () |
Field of
Search: |
;110/173 ;432/250 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Camby; John J.
Attorney, Agent or Firm: Parmelee, Miller, Welsh &
Kratz
Claims
I claim:
1. In an improved furnace roof construction for mounting on a
supporting metal framework having a horizontally and vertically
extending member assembly, as assembly of refractory blocks in the
form of a continuous rim wall that inwardly defines a feed opening
for the furnace, a unitary metal frame suspended from the
supporting metal framework and engaging outer peripheral reaches of
said block assembly for carrying said block assembly on the
supporting framework, and wheel-like door means rotatably carried
by the supporting framework independently of said block assembly
for movement into and out of a closing-off position with respect to
the feed opening.
2. In an improved furnace roof construction as defined in claim 1,
means movably positioning said unitary metal frame on the
supporting framework for directly moving said block assembly
longitudinally into and out of position in the furnace roof.
3. In an improved furnace roof construction as defined in claim 2,
said movable means comprising wheel-like elements cooperating with
said unitary frame and with horizontally extending members of said
unitary frame and the supporting framework.
4. In an improved furnace roof construction as defined in claim 3,
track means carried by said unitary frame and by the supporting
framework, and said wheel-like elements being operatively mounted
for movement along said track means.
5. In an improved furnace construction as defined in claim 3, one
set of said wheel-like elements being carried by the supporting
framework adjacent a side of said block assembly, and a second set
of said wheel-like elements being carried by said unitary metal
frame and cooperating with the supporting framework adjacent an
opposite side of said block assembly.
6. In an improved furnace roof construction as defined in claim 1,
a group of refractory roof tile members positioned in a cooperative
roof closing-off relation along an outer periphery of said
refractory block assembly, and beam and hanger members carried by
the supporting framework for removably suspending said tile members
in the furnace roof independently of said refractory block
assembly.
7. In an improved furnace construction for mounting on a supporting
metal framework having a horizontally and vertically extending
member assembly, an assembly of refractory blocks in the form of a
continuous rim wall that inwardly defines a feed opening for the
furnace, a unitary metal frame suspended from the support metal
framework and engaging outer reaches of said block assembly for
carrying the assembly on the supporting framework, said block
assembly having a seating portion about an inner periphery of said
rim wall, an overhead vertical feed housing assembly having a
seating ring carried by a lower end portion thereof and adapted to
fit on said seating portion, and door means having a refractory
face operatively mounted with respect to said feed housing assembly
for movement into and out of a seating position with said ring when
said ring is positioned on said seating portion.
8. In an improved furnace roof construction as defined in claim 7,
said unitary frame extending about said block assembly and having
truck and track means carrying said block assembly for direct
horizontal movement on the supporting framework into and out of
position in the furnace roof.
9. In an improved furnace roof construction as defined in claim 8,
means for moving said feed housing assembly out of position with
respect to said block assembly preliminary to moving said block
assembly on said truck out of position in the furnace roof.
10. In an improved furnace roof for mounting on a supporting metal
framework having a horizontally and vertically extending member
assembly, an assembly of refractory blocks carried by the
supporting framework, said block assembly having a seat portion
extending about an inner periphery thereof and defining a feed open
portion, a seating ring adapted to rest on said seat portion, an
overhead housing assembly, and a refractory door operatively
carried by said housing assembly for movement into and out of a
seating position with respect to said ring.
11. In an improved furnace roof as defined in claim 10, means for
mounting said housing assembly on the supporting framework for
movement into and out of a cooperating position with respect to
said block assembly.
12. In an improved furnace roof construction as defined in claim
10, said housing assembly having a pair of cooperating telescopic
door operating parts and a feed housing part, and means for moving
one of said telescopic parts into a closing-off position within
said feed housing part and for simultaneously moving said door into
a seating position with respect to said ring.
13. In an improved furnace roof as defined in claim 12, a shaft
rotatably mounting said door within said one telescopic part, and a
yoke connected to said shaft for raising and lowering said one
telescopic part within the other telescopic part.
14. In an improved furnace roof as defined in claim 13, said door
being mounted on said shaft for rotative movement into and out of a
seating position with respect to said ring.
15. In an improved furnace roof as defined in claim 10, means
suspending said ring from a lower end portion of said housing
assembly.
16. In an improved furnace roof as defined in claim 10, said ring
being of hollow construction and having means for passing a cooling
fluid therethrough.
17. In an improved furnace roof as defined in claim 10, said
housing assembly comprising: a hollow substantially vertical first
housing part, a hollow vertically sloped second housing part open
at its lower end into said first housing part, and said refractory
door being operatively carried for movement within at least one of
said housing parts into and out of a seating position with respect
to said ring.
18. In an improved furnace roof as defined in claim 17, said first
housing part being adapted to pass charging materials therethrough
into said feed open portion when said door is out of a seating
position with respect to said ring, and said second housing part
having means for carrying and guiding said door into and out of a
seating position with respect to said ring.
19. In an improved furnace roof as defined in claim 18, a hollow
sleeve-like member operatively positioned for up and down guided
movement within said second housing part, and means for rotatably
carrying said door within said sleeve-like member.
20. In an improved furnace roof as defined in claim 19, means
carried by said sleeve-like member and cooperating with said second
housing part to non-rotatably guide said sleevelike member for up
and down movement within said second housing part.
21. In an improved furnace roof as defined in claim 19, a shaft
carried within said sleeve-like member, a metal wheel-like element
rotatably carried on said shaft, said refractory door being secured
on said wheel-like element and substantially defining a circular
member therewith, said wheel-like element having teeth about its
outer periphery, a rack extending along the inside of said second
housing part for engaging said teeth and guiding said door into and
out of a seating position with respect to said ring, and motor
means connected to said shaft and positioned adjacent an upper end
of said second housing for moving said sleeve-like member up and
down therewithin and said teeth in a guided relation along said
rack.
22. In an improved furnace roof as defined in claim 10, a unitary
metal frame suspending said block assembly from the supporting
metal framework, and means pivotally connecting said housing
assembly to said unitary frame.
23. In an improved furnace roof as defined in claim 22, said means
for pivotally connecting said housing assembly to said unitary
frame being pin and lug means for pivoting said housing assembly
with respect to said unitary frame and for disconnecting said
housing with respect to said unitary frame.
24. In an improved roof as defined in claim 23, means suspending
said unitary frame on the supporting framework for horizontal
movement with respect to the furnace roof after said housing
assembly has been disconnected from said unitary frame.
25. In an improved furnace construction for mounting on supporting
framework having a horizontally and vertically extending member
assembly, an assembly of refractory blocks in the form of a
continuous rim wall that inwardly defines a feed opening for the
furnace, a unitary metal frame engaging outer periphery reaches of
said block assembly for carrying said block assembly on the support
framework, door means carried by the supporting framework for
movement into and out of a closing-off position with respect to the
feed opening, an overhead track carried by the supporting metal
framework, said unitary metal frame having a track extending
therefrom, flanged wheel means extending from said unitary frame
and cooperating with said overhead track and flanged wheel means
mounted on a lower portion of the supporting framework to and
cooperating with said extending track to carry said block assembly
for direct horizontal movement on the supporting framework into and
out of position in the furnace roof.
26. In an improved furnace roof construction for mounting on a
supporting metal framework having a horizontally and vertically
extending member assembly, an assembly of refractory blocks in the
form of a continuous rim wall that inwardly define a feed opening
portion for the furnace, a unitary metal frame extending from the
supported metal framework and engaging outer reaches of said block
assembly for carrying said assembly on the supporting framework, an
overhead feed housing assembly having a seating ring carried by a
lower end portion thereof and adapted to fit within the said feed
opening portion, refractory door means operatively mounting within
said overhead feed housing assembly for movement into and out of a
seating position with said ring when said ring is positioned on
said feed open portion, means for moving said unitary frame into
and out of position within the furnace roof, and means for raising
said feed housing assembly and said seating ring out of position
with respect to said block assembly preliminary to moving said
unitary frame out of position within the furnace roof.
27. In an improved furnace construction for mounting on supporting
framework having a horizontally and vertically extending member
assembly, an assembly of refractory block carried by the support
framework, said block assembly having a seating portion extending
about an inner periphery portion thereof and defining a feed open
portion, an overhead housing assembly, a refractory door
operatively carried by said housing assembly for movement into and
out of a seating position with respect to said seating portion,
said housing assembly having a pair of cooperating parts one of
which is a feed housing part and the other of which is a door
operating part, said door operating part having a pair of
telescopic portions, and said pair of telescopic portions having
means for moving said door into and out of a seating position with
respect to the said seating portion and for also closing-off and
opening said feed housing part.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention pertains to an improved suspended furnace roof
construction and particularly, to a construction that is simplified
in its metalwork and tile assembly and that facilitates maintenance
and replacement of refractory tile members. A further phase of the
invention relates to an improved feed hole construction for a
furnace roof whose door carrying feed housing may be swung into and
out of position with respect to a feed opening, and whose feed
opening defining refractory block assembly is movable as a truck
unit into and out of position in the roof.
2. Description of the Prior Art
In my U.S. Pat. No. 3,345,962 I have shown a so-called link and
yoke refractory roof construction in which cross-extending beam
members are detachably carried by transversely extending overhead
girders of the metal framework structure, with looped or so-called
link types of hangers being suspended from the beam members and
carrying primary hanger castings that are provided with a plurality
of spaced-apart latching leg and foot portions. Each of the
refractory tile members has an open latching portion at its upper
end that cooperates with the latching leg and foot portions of an
associated hanger casting to enable the tile to be mounted by
individually rotating it into a suspended position thereon. In this
manner, a group of tile members may be successively tilted into
latching engagement with a second and third set of latching leg and
foot portions of the same associated hanger casting.
The need today is for a metal structure assembly that will maximize
distance between the tile members and the heavy overhead metal
framework for isolating the high temperature portion of the furnace
from the framework and for maximizing heat transfer from the top of
the tile members and away from suspending hanger members. An
improved structure dealing with this problem has been set forth in
my co-pending application Ser. No. 182,409 of Sept. 21, 1971. This
disclosure shows the use of so-called gooseneck hangers that, in
effect, isolate the overhead beam and girder structure from
immediate hanger castings and tile members, and which enable an
assembly of tile members, as carried by a gooseneck hanger, to be
manipulated into a suspended position with respect to an associated
beam member. Such structure also facilitates the use of cooling
means and of partitions or covers for dust and dirt collection and
for providing cooling fluid flow passageways along upper reaches of
the refractory tile members.
Present day furnace feed or charging holes have been heretofore
formed by leaving out enough roof tile or brick members to provide
the size of hole, with a cast iron pipe being inserted into the
hole and equipped with a slide gate at a spaced location above the
hole. In order to give the metal pipe a reasonable life under the
high temperature conditions, the gate is generally left partly open
to allow negative furnace pressure to draw-in some air for cooling
purposes. Such drawn-in air also serves to preserve the suspended
roof brick and the hanger castings which are relatively close to
the hot edge. Now ecology has demanded that openings in the furnace
be sealed and that higher pressures be used for more efficient
combustion and a minimization of atomspheric contamination. Thus,
the bleeding of air is now impractical. I have determined that the
above form of feed hole arrangement is wholly inadequate to handle
high furnace temperatures or positive furnace pressures.
SUMMARY OF THE INVENTION
It has been an object of the present invention to devise a
suspended furnace roof construction in which its assembly of
suspending metal members will enable a better flexibility in
maximizing the distance between upper reaches of the refractory
tile members and the overhead metal framework structure, and also
enable flexibility in the number of tile-receiving latching leg and
foot portions carried by primary metal hanger castings.
Another object of the invention has been to facilitate the storage,
shipment and handling of tile members as an assembled group and for
mounting them as a group on metal hangers to form a manipulative
unit that may be handled as a unit for moving it in a suspended
relation into position on an overhead support or beam member of the
metal framework of a roof construction.
A further object of the invention has been to devise a construction
of primary hangers or hanger castings and cooperating refractory
tile members, such that a hanger casting having a depending group
of latching leg and foot portions may, itself, be rotated into a
position such that its group of leg and foot portions will
simultaneously latchengage within a cross-aligned group of tile
members.
A further object has been to maximize the number of tile members
that may be suspended in an assembled relation from a single
tertiary overhead hanger member.
A still further object of the invention has been to devise new and
improved means and a method of utilizing a palletized assembled
group of refractory tile members for mounting their metal hangers
in position with respect thereto before maneuvering them in a
suspended relation on the hangers into a supported position on a
beam member of the roof construction.
A still further object of the invention has been to devise a new
and improved feed hole construction that will enable the use of
higher furnace pressures, enable a substantially fully closed-off
operation of a furnace, that will greatly facilitate maintenance
and repair of the furnace roof, and that will have an improved form
of opening and closing operation.
These and other objects of the invention will appear to those
skilled in the art from the illustrated embodiments and the
claims.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a fragmental side view in elevation of a portion of a
furnace roof constructed in accordance with the invention and
showing a three-part hanger utilization for suspending refractory
tile members from an overhead metal framework which may include
transverse girder, longitudinal support beam and vertical buckstay
members.
FIG. 2 is a fragmental end view in elevation on the scale of FIG. 1
and taken at right angles thereto. In this view, the tile members
have been assembled in a series of rows given alphabetical
numbering and corresponding to rows of palletized assembly, such as
illustrated in FIGS. 10, 11 and 12.
FIG. 3 is a top plan view of a slightly enlarged scale with respect
to FIGS. 1 and 2, showing a unitized assembly of tile members on
supporting metal hangers of these figures, but for clarity,
omitting members of the overhead framework. This complete unit is
of a type that may be maneuvered into a suspended mounted
positioning in accordance with procedure illustrated in FIGS. 17
and 18.
FIG. 4 is a greatly enlarged view in elevation taken from the wide
side of a representative basic form of primary hanger casting that
is constructed principally for replacement utilization in a furnace
construction. The basic features involve the use of a
cross-extending shoulder, downwardly extending and spaced-apart
latching parts, and a centrally disposed, upwardly-projecting
latching lug part.
FIG. 5 is a top plan view and FIG. 6 is a narrow end view in
elevation on the scale of and of the hanger of FIG. 4.
FIG. 7 is a view in elevation on the scale of FIGS. 4 to 6 showing
a latching collar for, in effect, detachably suspending a primary
hanger, such as shown in FIG. 4 in a manner illustrated in FIGS. 19
to 21. As shown in FIG. 19, such collar may also serve as a
latching means for an upper hook-shaped end part of a replacement
type of primary hanger construction.
FIG. 8 is a top perspective view on the scale of FIGS. 4 to 7
showing the construction of a tile member of the invention and as
adapted to receive a pair of latching parts of an associated
primary hanger casting in the manner illustrated in FIGS. 13 and
14.
FIG. 9 is a view similar to FIG. 8, particularly illustrating metal
cladding that may be employed with a tile member of the
invention.
FIG. 10 is a narrow side view in elevation and FIG. 11 is a wide
side view in elevation on the same scale and on the scale of FIGS.
22 and 23 showing a palletized assembly of tile members. In these
figures, banding means is shown for both retaining the tile members
in an upright assembled positioning with respect to each other and
for retaining the assembly on the pallet during handling and
shipping thereof.
FIG. 12 is a fragmental top plan view on the scale of FIGS. 10 and
11 and of the palletized assembly shown thereby.
FIGS. 13 and 14 are greatly enlarged fragmental side views in
elevation illustrating rotational mounting of a primary hanger
member or casting within a group of tile members of an aligned row
while, for example, they are being retained in an assembled
relation on a pallet such as shown in FIGS. 10 and 11, but after
vertical banding or strap members have been removed.
FIG. 15 is a reduced top plan view taken across latching leg
portions of a three-legged primary hanger casting, such as
illustrated in FIG. 16, where such hanger is in a fully mounted
position such as shown in FIG. 16.
FIG. 16 is a vertical perspective view showing a pair of tile
members with their wide side faces in aligned abutment, and as
carried in a suspended or latched positioning by the form of
primary hanger shown in this figure and in FIG. 4; this hanger is
of a type suitable for small fill-in roof spaces or for furnace
repair or maintenance work. A latching collar is shown in an upper,
unlatched position on a secondary hanger.
FIGS. 17 and 18 are greatly reduced somewhat diagrammatic views
illustrating procedure that may be employed in mounting and
removing a unitized, panel-assembled group of hanger-suspended tile
members such as illustrated in FIGS. 1, 2 and 3. FIG. 17 is a top
plan view and FIG. 18 is a side view in elevation.
FIG. 19 illustrates a modified form of primary hanger casting
construction which has two parts for facilitating furnace repair;
as illustrated, the two parts may be suspended from the same
secondary hanger so as to, in effect, provide a primary hanger
assembly having five latching leg parts.
FIG. 20 is an end view in elevation on the scale of and taken along
the line XX--XX of FIG. 19.
FIG. 21 is a horizontal section on an enlarged scale taken along
the line XXI--XXI of FIG. 19.
FIG. 22 is a narrow side view in elevation on the scale of FIG. 10
showing a palletized, unitized assembly ready for mounting in the
manner shown in FIGS. 17 and 18.
FIG. 23 is a wide side view in elevation on the same scale as FIG.
22, taken at right angles thereto and in the same direction as FIG.
11.
FIG. 24 is an elevation on the same scale as FIG. 22, illustrating
a modified form of tile suspension assembly such as may be used in
repairing a furnace roof. This view is somewhat diagrammatic, in
that it illustrates the use of a hand tool for carrying a group of
suspended tile members and their primary and secondary hangers.
FIGS. 25 and 26 are vertical view in elevation and partial section
illustrating a feed hole construction that includes an upper
housing assembly for feeding the furnace, having a door operable
therewithin, and provided with a jacketed sealing ring for the
door. A unitized refractory block assembly that defines a feed hole
opening and that is adapted for movement as an independently framed
unit out of position in the roof is also illustrated. Both of these
figures show the door and an inner telescopic housing part in a
fully lowered, sealing and closing-off position. FIG. 26 is a
section along the line XXVI--XXVI of FIG. 25.
FIG. 27 is a horizontal section on the scale of and taken along the
line XVII--XVII of FIG. 25.
FIG. 28 is an elevation in partial section on the scale of and of
the same apparatus as FIGS. 25 and 26 and taken in the same
direction as FIG. 25, but showing the door and the inner housing
part in their fully raised or open positions to provide a charging
passageway into the furnace roof opening.
FIG. 29 is a reduced top plan view of a portion of a furnace roof
showing three hole or opening defining units to illustrate parts of
a hole-defining block assembly, such as shown in FIGS. 25 to 28,
inclusive.
FIG. 30 is an elevation section taken along the lines XXX--XXX of
FIG. 29 and on the same scale as the latter figure. The extreme
left hand feed hole is shown with its housing assembly and its
sealing ring in their lowermost or operating positions, at which
time the door may be open to enable charging the furnace or may be
closed as shown in FIG. 25. The middle and the right hand feed
holes of this figure show the housing assembly and sealing ring in
a raised position with respect to the feed hole, such as may be
utilized in moving the assembly out of the way when the refractory
feed hole assembly is to be, for example, moved out of position in
the furnace roof on its truck frame.
FIG. 31 is a top plan view and FIG. 32 is a side view of the
refractory part of a rotary door construction on the scale of and
such as used with the door unit of FIGS. 25 to 28.
FIG. 33 is a fragmental side view in elevation of a hanger casting
assembly similar to the assembly shown in FIG. 24, but with cover
plate or trough-like partition members in position thereon for
collecting dust and charge spillage and for facilitating movement
of cooling fluid above upper reaches of the tile members. In this
view, secondary hangers are carried by flanged support beams rather
than through the agency of tertiary hangers.
FIG. 34 is a fragmental top plan view on the scale of and of the
assembly of FIG. 33.
FIG. 35 is a vertical perspective illustrtating the use of a single
tile carrying primary hanger casting that is adapted to over-latch
an adjacent hanger and which may be used as an end filler hanger
for suspending one tile member in an assembly such as shown in FIG.
33.
FIG. 36 is a view on the scale of FIG. 33 and from the same side,
but illustrating a unitized assembly such as disclosed, for
example, in FIGS. 22 and 23, wherein four-legged primary hanger
castings are utilized for carrying three tile members, as in the
initial construction of a furnace roof. This figure is also
illustrative of a suitable form of cover plate, trough assembly for
this type of construction. Punch plates are shown having holes
therein to fit over latching collars and rest on mounting pads or
washers, and asbestos pads are shown used as air seals between
covers, plates and the hangers.
And FIG. 37 is a fragmental top plan view on the scale of and of
the construction shown in FIG. 36.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In carrying out one phase of the invention, a conventional three by
four foot pallet 20 having a relatively planar platform 21 of a
suitable material such as wood may be utilized for assembling or
stacking a group of refractory brick or tile members 22 in an
upright position thereon (see FIGS. 10, 11 and 12 of the drawings).
Employing a conventional size of tile member 22 will enable forming
eight rows of tile members as made-up of wide-face abutting members
that extend (see FIG. 10) along the shorter dimension of the pallet
and whose narrow side faces are positioned in a cross-aligned
manner along the wider dimension of the pallet 20 (see FIG. 11).
The construction of the tile 22 and of primary hangers 35 and 35'
(hanger castings) is coordinated to enable the hangers to be
rotated into and out of a latched and suspending positioning
simultaneously with respect to one, two, three or four tile members
of a row such as A.
In FIG. 22, each hanger 35 is shown carrying three tile members,
thus requiring four primary hangers for a full length of twelve
tile of each tile row, such as for rows A, B, C and D of one-half
of the pallet assembly and for rows A', B', C' and D' of the other
half thereof. For facilitating the insertion and latch-mounting of
primary metal hangers 35 (see FIGS. 1 and 13) or 35' (see FIG. 4)
or 35" (see FIG. 19), each tile member 22 (see FIGS. 13 and 14) has
an open ledge 23 that extends across one planar narrow side face
thereof and is open to its planar top face 22e and to its planar
pair of wide side faces 22a and 22b, but closed with respect to its
other planar narrow side face 22d. As shown in FIGS. 8 and 9,
latching slots 24 and 25 are open to the ledge portion 23 and to an
adjacent wide side face 22a and 22b.
Initially, in installing a furnace roof, it is contemplated that a
hanger casting 35 will be used that has a longitudinally extending
shoulder part 36 provided with a group of four,
downwardly-projecting latching leg and foot portions as noted in
FIG. 22. The hanger casting or primary hanger 35' of FIG. 4 is
exemplary and is shown as having an intermediate latching leg part
of full section comprising a latching leg portion 37, a
cross-extending latching foot portion 38 which extends at right
angles to the leg portion, and a tapered bottom end portion 38a
which extends from the foot portion. Each end latching leg part is
shown as comprising a downwardly projecting leg portion 39, a
cross-extending latching foot portion 40, and a tapered bottom end
portion 40a. It will be noted that the end latching leg parts are
substantially half sections of the intermediate latching leg
parts.
A suspension upper latching lug part 41 of cruciform shape is
adapted to extend or project substantially centrally upwardly in a
balanced relation from the shoulder part 36. A latching collar 45
having an annular flange 47 is adapted to have a downward slide fit
over the latching lug 41 to retain cooperating parts in a
latch-engaging relation. Its flange 47 serves as a lift means and
as a position support for cover members (see FIGS. 33 and 36). As
particularly illustrated in FIGS. 4, 5 and 6, the part 41 is of
somewhat cruciform shape, looking downwardly, as provided by
cross-extending wings 41a, 41b and 41c. The wing 41c is cut-out or
recessed adjacent its lower end to provide a latching recess
portion 41d to receive a connecting loop portion 46b of a secondary
hanger 46, as particularly shown in FIGS. 19 to 21.
The secondary hanger 46 is shown as of a double-loop, rodlike
construction wherein its two vertical portions extend in a spaced
relation, are connected at their lower ends by the loop 46b and, at
their upper ends, are bent-over to provide claw, hook-over or
latching portions 46a. Each secondary hanger 46 is of a
construction that minimizes heat pick-up and that maximizes heat
dissipation. The upper hook or claw end portion 46a is adapted to
latch-engage-over and suspend each hanger 46 from an upwardly
projecting flange of a flanged support or longitudinally
horizontally extending channel part 13, as particularly illustrated
in FIGS. 1, 2 and 3. The secondary hangers 46, as shown in FIGS. 1
and 2, are employed as oppositely spaced-apart pairs along a pair
of line rows. Each row, as shown in FIG. 2, has the hangers 46
suspended in a spaced-apart relation along one flanged side of the
associated flanged support member 13. The hangers 40 are thus
assembled in what may be termed hanger row pairs along the full
length of the associated flanged support part or member 13, with
each member 13 carrying two hanger rows in which the individual
hangers 46 of each row have an opposite and crossaligned relation
with respect to hangers of the other row that are suspended by the
same member 13.
A tertiary hanger construction 30 which may be termed a gooseneck
type, has a hook-over, latching or neck portion 31 (see FIGS. 1 and
2) at its upper end that is provided with a cross-extending eyelet
31a for receiving the hook of an overhead hoist or crane (not
shown) when a previously palletized unit assembly of suspended tile
members, such as illustrated in FIGS. 17 and 18 is being moved into
a mounted relation on a longitudinally extending support beam
member 11. As illustrated in the latter figures, each unitized
pallet assembly may be carried by one tertiary hanger 30, by two
support members 13, by four rows of secondary castings 46, and by
four rows of primary hangers 35 that extend in the direction of the
shorter pallet dimension, see FIGS. 22 and 23.
In utilizing a pallet 20 for assembling tile members 22, such as
shown in FIGS. 10, 11 and 12, the tile may be assembled in the
upright position and secured together as an assembly, by an
encircling, banding metal piece 27 and held in position on the
pallet 20 by a pair of vertically encircling metal banding pieces
28. This dual banding may be accomplished at the tile factory and
may be retained during storage and shipment of the members from the
refractory factory to the furnace location or point of
installation. Although the primary hangers 35 may be installed at
the brick factory or kiln before shipment and before the vertical
banding members 28 are installed, the preferable procedure is to
install all of the metal work at the place of installation of the
furnace, but while the tile members are retained in an assembled
relation on the floor 21 of the pallet 20. In this case, the
vertical banding members 28 are removed, but the horizontal member
27 may be retained until the hanging or suspending operation of
FIG. 18 has been completed.
The construction of the latching portions of the tile members 22
shown in FIGS. 8 and 9 is such as to enable the latching leg and
feet portions of a particular hanger 35 or 35' to be rotated, as
illustrated in FIGS. 13 and 14, into and out of a fully suspended
latching position with respect to a group of tile members of a
given row, starting with the rows such as D or D' of FIGS. 11 and
12. After all of the primary castings 35 or 35' have been thus
mounted, then the secondary hangers 46 are mounted in position in a
manner indicated in FIGS. 1, 2, 16, 20 and 21. It will be noted
that each hanger 46 has a latching collar or cylinder 45 slidably
mounted thereon, whose inside diameter is slightly larger than the
outer circumference defined by the lug portions 41a, 41b and 41c of
the upper latching part 41 of a primary casting hanger 35, 35' or
35". When, as shown in FIG. 16, the connecting loop portion 46b is
inserted under the shelf end of the recess portion 41d of the lug
41c, then the collar 45 may be dropped downwardly to enclose the
cruciform shape, to remain in position thereon by resting on a
mounting pad or washer 41e. The pad or washer 41e is secured, as by
welding, to the upper side of the shoulder part 36 of an associated
primary hanger 35, 35' or 35".
The construction of the refractory brick or tile members 22 is
particularly shown in FIG. 8. Each tile member 22 has a pair of
opposed, planar, wide side faces 22a and 22b, a pair of opposed,
planar, narrow side faces 22c and 22d and a planar upper end face
22e. Recessed ledge part 23 is fully open to the upper face 22e and
to the narrow side face 22c, and has a beveled or sloped front edge
23a at the narrow side face 22b. A back face or riser portion 23b
extends from the recess step or ledge of 23 and terminates at its
upper end at the top face 22e. A transversely-elongated latching
slot portion 24 is provided along each wide side face 22a and 22b,
is sidewise-open thereto, and is upwardly-open to the step or ledge
of the part 23. The latching slot portion 24 has a pair of opposed
end faces 24b, with the innermost end face cooperating with a top
face 24c and a side face 24a to define a latching recess.
A vertical leg-receiving slot portion 25 extends vertically along
each wide side face from the latching slot portion 24 and
terminates at the top face 22e to which it is open. The
leg-receiving slot portion 25 has a lower, straight, vertical back
face 25a and an inclined or sloped upper back face portion 25b.
Referring to FIGS. 4, 13 and 14, the foot portions 38, 38a or 40
and 40a of a hanger casting such as 35, 35' or 35" are adapted to
be entered into the latching slot portion 24 of tile members
through the open-end part 23, with the leg portion 37 or 39 tilting
on the backwardly sloped face 25b of the leg receiving slot portion
25. When the hanger casting is fully mounted in a tile suspending
relation, as shown in FIG. 14, its foot portion 38 or 40 engages
the upper inner face 24c and the side face 24a of the latching slot
portion 24, and its leg 37 or 39 engages the vertical back face 25a
of the leg receiving slot portion 25. The tile of FIG. 9 is of the
same construction as the tile of FIG. 8, but has been provided with
a steel cladding facing 26 along one wide side face 22a and one
narrow side face 22d that may be cemented thereto.
With particular reference to FIGS. 1 to 3, inclusive, details of
the construction of tertiary hanger 30 are shown. A yoke or
cross-extending arm part 33 is hooked-over or supported in a
centrally suspended relation from the lower end of the tertiary
hanger 30 by means of a lower latching lug, foot or hook portion
32. Each arm or yoke part 33 has a mounting foot 33a at its
opposite ends that is secured by weld metal w (see FIG. 36) to a
central portion of a flanged support part or member 13 that may be
of I-beam or a channel construction. Each flanged member 13 extends
transversely of the furnace in a parallel relation with overhead
girders 10 of the basic metal framework. Each member 13 serves to
carry or suspend a pair of rows of spaced-apart secondary hangers
46, one row being suspended from each of its flanges, see
particularly FIGS. 1 and 2. As a result, each yoke or cross-arm
member 33 serves to suspend four lines or rows of secondary hangers
46 in a relative wide, space-providing relationship above the upper
reaches of the tile members 22 that are being suspended.
As shown for example in FIGS. 1, 2, 17 and 18, the tertiary or
gooseneck hangers 30 are adapted to be suspended from flanged
support member 11 to extend between a pair of girders 10 of the
main overhead frame structure. The hangers 30 may be adjusted as to
their vertical relationship with respect to the members 11 by short
length I-beam pieces, such as 12. The upper hook end 31 of each
hanger 30 is adapted to hook or latch-over the upper flange of an
associated beam member 11. In the construction, the girders 10 may
extend transversely of the furnace and be supported on conventional
vertical buckstays or upright members, such as for example 9 of
FIGS. 25 and 28. The flanged members or beams 11 which extend
between the spacing provided by the girders 10 will thus extend
longitudinally of the furnace structure.
As previously intimated, the primary hanger castings may be of a
type 35 for initial furnace installation (see FIGS. 1 and 22), or
of modified construction such as 35' (see FIGS. 4, 5, 6 and 16), or
of a modified dual construction such as 35" (see FIGS. 19, 20 and
21). The modified constructions are particularly devised for use in
effecting maintenance and repair of a furance roof (see for example
FIG. 24). Although initial installation primary hangers 35 have
been provided with two intermediate latching leg parts 37 and two
end latching leg parts 39, it will be apparent that any suitable
number may be utilized. The construction of the type of hanger 35',
shown in FIGS. 4, 5, 6 and 16, is provided with one intermediate
leg part 37, with two end leg parts 39, and additionally with an
upwardly projecting latching ledge portion 36a at one end of its
shoulder 36. As shown in FIGS. 24 and 33, each latching ledge
portion 36a is adapted to receive a hook end 53 of an auxiliary
filler hanger 50 (see FIG. 35) which may be used as a single tile
member support for form a complete hanger assembly with an adjacent
two tile member supporting hanger 35'.
In the two-part type of hanger construction 35" shown in FIGS. 19,
20 and 21, one part or half F is provided with an upwardly
projecting latching lug part 41 of cruciform shape, while the other
cooperating second hanger part or half E is provided with an upper,
cooperating, latching hook 42. As shown particularly in FIG. 19,
the two hanger parts E and F, although constructed to permit
individual insertion of them within a furnace installation,
actually, in a cooperative final latching positioning, form the
equivalent of a unitary hanger 35" having three intermediate
latching leg parts 37 and 39 and a pair of end latching leg parts
39. As will be noted, the hook 42 is adapted to engage within an
upper open end of latching collar 45 when it is in its "down"
position on pad or washer 41e. Thus, in this construction, the
collar 45 serves both to assure a proper latching suspension of the
hanger part E from an associated secondary hanger 46, as well as to
carry the other hanger part F in a cooperating, endwise-aligned and
abutting relation.
FIG. 35 illustrates the construction and mounting of an end casting
member 50 which may be employed in the manner shown in FIG. 24, and
particularly to facilitate roof repair. The casting 50 has a pair
of legs 51, with each leg having a cross-extending foot 52 that is
adapted to latch within an associated latching slot 24 of the tile
member 22. The shoulder of each casting has a hook-like latching
end portion 53 that, as shown in FIG. 33, is adapted to latchover
the end lug 36a of an associated hanger 35 or 35'.
FIGS. 33 and 34 are illustrative of one form of cover plate means
55 which utilizes V-shaped members to isolate the upper reaches of
the tile members 22 with respect to, for example, the support and
beam members of the overhead supporting metal frame structure. In
this manner, dust and charging material spillage may be collected
and kept-off the assembly of hangers 46, 35 and 35', etc. At the
same time, cooling air flow passageways are provided beneath the
cover members 55. A suitable representative means for supplying and
exhausting cooling fluid has been shown and described in my
copending application Ser. No. 182,409, filed Sept. 21, 1971, with
particular reference to FIGS. 1, 2, 3, 18, 19, 20 and 21 thereof.
FIGS. 36 and 37 of the present application show a modified type of
cover plate construction 55', 56 that is particularly adapted for
use in connection with primary hanger castings 35, such as used in
an initial roof installation. Sealing means, such as asbestos pads
68 may be interposed between the plates 55 or 55', 56 and adjacent
metal parts or members of the furnace roof construction, such as
punched-out plates 57 on which they rest.
FIGS. 35 through 32, inclusive, are illustrative of a new and
improved form of feed hole closure or door assembly H. As shown in
FIGS. 29 and 30, one or a group of such assemblies may be utilized
as desired. Instead of using conventional refractory roof tile
members to define the immediate feed opening, a special feed hole
refractory block assembly G is provided. As shown, for example in
FIG. 29, the block assembly G may define an octagon-shaped hole
portion within the furnace. Such hole defining or ringing
refractory blocks, as illustrated in FIGS. 25, 26, 28 and 30, are
provided with inner offset recess portions that in the assembly for
each hole, define an annular or circular seating ledge 77 to
removably receive a ring-shaped, hollow, sealing and seating,
tube-like member 70 thereon. The member 70 is preferably
water-jacketed, and is adapted to receive a refractory door 95 that
is adapted to be rotated into and out of closing-off or seating
engagement therewith. The seating position is illustrated in FIGS.
25 and 26.
With reference to FIG. 29, the sealing-seating ring 70 is shown
provided with an in-flow cooling fluid or water supply pipe or line
71 that is connected through a fluid coupling 72 and a control
valve 73 to a suitable source of cooling fluid. The outflow of
warmed fluid or water is accomplished through outlet pipe or line
74, fluid coupling 75 and control valve 76. As will be noted in
FIG. 29, the ring member 70 may be provided with a cross-extending
partition 70a so as to assure a full circular flow of cooling fluid
or water counterclockwise from the inlet pipe 71 about and along
the hollow interior of the ring to discharge out through the outlet
pip 74.
Referring to FIG. 25, the hole defining refractory block assembly G
is supported on a unitary metal frame 78 that is shown made up of
channel members and as having a pair of spaced-apart horizontal,
sidewise-extending track members 16 that may also be channels. One
side of the frame 78 is suspended (see also FIG. 26) from a spaced
pair of tracking beams 15. As shown in FIG. 28, the beams 15 are
carried on beams 14 and overhead girders 10 of the supporting metal
framework for the roof. A suspension rod 85 is secured at its lower
end to the frame 78 and at its upper end has a bifurcated trolley
bracket 86 that carries a pair of wheels 87. The wheels 87 are
rotatably mounted in an opposed relation on opposite wings of the
U-shaped bracket 86 to ride along a lower flange of an associated
one of the pair of trackway beams 15. A pair of suspension rods 85
may be provided, one for each trackway beam 15.
Each track member 16 is adapted to ride on an associated flanged
wheel 89 that is rotatably positioned on a mount or stand 88 that
is secured on an associated one of a pair of horizontally
spaced-apart buckstay or upright frame members 9. It will thus be
apparent that the frame 78 is, in effect, a supporting or carrying
truck for the independent feed hole defining block assembly G, and
that the block assembly may be moved as a unit out of its roof
position on such truck to facilitate repair and maintenance. The
exposed opening may be covered with a heat shield at this time, and
the operation of the furnace continued, making use of other
remaining feed hole assemblies G and H, see FIGS. 29 and 30.
To provide a maximum stability for the unit or assembly G, lower
track members 16 may have the same spacing as and be aligned with
upper or overhead track members 15. As shown in FIGS. 25, 26 and
28, short-length channel pieces 79 may be secured to extend from
the unitary frame 78 to serve as suspension hangers for filler roof
tile members 22'. The tile 22' may be removably suspended from the
upper flanges of the pieces 79 by hangers 46 and 35 or 35'.
An upper housing assembly or unit H is shown as a vertically
downwardly extending feed and door housing assembly that FIG. a
fully vertical cylindrical feed member or housing part 80 and a
secondary, downwardly inclined, cooperating, door-positioning
cylindrical housing part 110. As illustrated in FIG. 28, the
secondary or inclined housing part 110 has a lower end portion
which is open into the primary housing part 80 through a side
thereof and which carries a door operating and feed closing-off
mechanism. A somewhat segmental cylindrical inner telescopic part
111 is open at both of its ends and is adapted to operate within
the housing part 110 and to operatively carry a rotatable
refractory door part 95. As shown in FIGS. 25, the inner telescopic
part 111 is adapted in its lowermost position, in combination with
the upper wall portion of the housing part 110, to fully close-off
the feed passageway through the housing part 80. This is
accomplished simultaneously with a downward rotatable movement of
the refractory door part 95 into closing-off or seating engagement
with the seating ring 70. The seating ring 70 is shown as an
integral part of the housing assembly H and as extending downwardly
from the lower edges of the bottom opening in such assembly.
The innermost housing part 111 serves as a variableposition
mounting means for the door 95 and is provided with a roller 115 at
its upper end that is pivotally mounted thereon to non-rotatably
move the part 111 up and down and ride along an offset recess or
groove portion 114 that extends longitudinally along the adjacent
wall of the housing part 110. As shown in FIG. 26, asbestos sealing
material 117 may be cemented on the inside of the feed housing 80
to provide a sealed relation between its face wall and the outer
face of the telescopic, sloped and slidable innermost housing part
111 when the door 95 is in its fully closed position.
The refractory door 95 (see also FIGS. 31 and 32) is of
segmental-rounded or hemispherical shape and is adapted to be
removably cemented within and carried by a cast metal support wheel
part 96 to, in effect, project from one relatively planar side
thereof. The metal part 96 forms a substantially complete
wheel-like shape with the door 95. The support part 96 is shown
rotatably carried by its hub 98b on a sleeve bearing 98 of a cross
extending shaft 98a (see also FIG. 26) that is secured between
opposite sides of the wall of the inner member 111 and is adapted
to be pulled upwardly and pushed downwardly by a mounting yoke 97
through which the shaft 98a also extends and which removably
carries an operating piston rod 99 at its upper end. The piston rod
99 is shown connected through a flanged coupling 100 to a piston
rod 101 of a reciprocating fluid motor, such as an air motor
102.
As indicated in FIG. 30, the two piston rod parts 99 and 101 may be
disconnected at the coupling 100 when the door assembly H is to be
raised. For the purpose of guiding the door structure H and
particularly, of controlling its opening and closing operation, a
ladder or rack-like structure 105 is secured to the inner wall of
the outer housing 110 and is provided with cross-extending
spaced-apart rungs or bars 106 which serve as guiding cogs for
rounded gear teeth 95a that are positioned about the outer
periphery 96the metal wheel 96 on which the refractory door 95 is
carried. To give the innermost housing part 111 mounted stability,
it is also shown secured at its upper end to the yoke 97 by
cross-extending pins 112 (see FIG. 26).
In FIG. 28, the door is in its uppermost position, as accomplished
by positively moving the piston rod 101 of the motor 102 to its
uppermost position. At this time, as shown, the inner sleeve or
housing 111 is also in its uppermost position and within the outer
housing 110. Thus, the passageway through the feed duct 80 is at
its maximum, in that the door 95 is substantially fully withdrawn
within the housing 111 and in a raised position above its seating
ring 70. Furnace feed through the door unit H may be effected from
a feed conduit 91 which may be of a two-part connected
construction, see flanges 91a and 92a and bolt and nut assemblies
94 that connect part 91 to a lower part 92. The lower half or part
92 is adapted to slidably telescope over an upwardly extending feed
collar 93 that is carried by the upper end of the main duct or
housing 80. With reference to FIGS. 28 and 30, the duct 80 is shown
provided with hoist or lift eyelets 80a and 80b which may be
engaged by the hook ends of a hoist chain for lifting the housing
assembly H from its lower (left hand) position of FIG. 30 to a
raised position such as illustrated in the central view of FIG.
30.
As shown in FIGS. 25 to 28, inclusive, the housing assembly H is
both detachably and pivotally mounted on the frame 78. An upright
mount or stand 94 is adapted to extend from the frame 78 to
pivotally mount a downwardly projecting lug 82 that is secured to
the housing 110 on one side of the housing assembly H, through the
agency of a removable pivot pin 82a. A limit stop 84a is secured to
project from the mount or stand 84 to limit the maximum down
position of the lug 82. However, a full upward swing of the housing
unit A may be effected on the pin 82a. To anchor the unit H, a
second mount or stand 83 projects upwardly from an opposite side of
the block carrying frame 78 and is connected through a removably
pivot pin 81a to a second mounting lug 81 that is secured to the
housing 80 on an opposite side of housing assembly H. When the pin
81a is moved axially out of position, then the unit H may be
pivoted upwardly to the right in FIG. 28 on the pin 82a. On the
other hand, when it is desired to fully clear the area adjacent to
or above the feed hole defining block defining assembly G, then
both the pins 81a and 82a may be removed and the unit H raised out
of position through the agency of an overhead hoist or similar
means that has chains hooked through eyelets 80a and 80b. The unit
G may then be moved horizontally out of position in the furnace
roof. If desired, the hangers 46 and 35 and the tile members 22'
may be first removed. The unit G may be pulled or pushed to one
side or end of the furnace along trackway or rail members 15 and
16. For example, a fork lift truck operating on a walkway may be
attached to the frame 78 for this purpose. The construction
facilitates repair of the ring 70, replacement of the refractory
door flapper part 95, replacement of feed opening defining blocks
of the assembly G, etc.
FIGS. 22 and 23 are illustrative of a modified form of hanger
construction in which a vertical post or gooseneck hanger 30' is
somewhat similarly constructed to the hanger 30 of FIG. 1, but its
lower end is provided with a wing-like, angle-shaped mounting
bracket 56 which is secured, as by weld metal, along its bottom
flange centrally to the web of a short-length, cross-extending
I-beam shaped support member 60. It also has a hook-nose 31'
provided with an eyelet 31a'. A pair of adjacent, spaced-apart,
angle-shaped mounting wings 61 is secured to each end of each
vertically positioned flange of the support member 60 to project
downwardly therefrom. This provides two opposite pairs of wings 61
along each side of each member 60 and at each end thereof. A half
beam shaped connector 62 has its web positioned between an
associated pair of wings 61 and is removably secured in position
therebetween by suitable means, such as a cotter pin assembly 63. A
second I-beam shaped support member 13 is secured somewhat
centrally thereof along its web to the underside of the flange of
the member 62 to extend horizontally therefrom. It will be noted
that the member 13 is of greater length than and extends
horizontally in a right angular relationship with respect to the
member 60. As shown, there are two spacedapart and parallel support
members 13 for each gooseneck hanger 30'. It will be noted that the
support members 13 and 60 are positioned horizontally rather than
vertically, with their webs being horizontal and their opposed
flanges being vertical.
As shown in FIG. 23 adjacent side pairs (such as end pairs) of
secondary hangers 46 may have their latching collars 45 positively
held in downward latching engagement over the latching lug 41 of an
associated primary hanger or hanger casting 35 by a U-shaped clip
part or element 65. As shown in FIGS. 22 and 23, each clip part or
element 65 may be removably secured in position to project
downwardly from a side flange of the support member 13 by bolt and
nut assemblies 66.
* * * * *