U.S. patent application number 13/832511 was filed with the patent office on 2014-04-03 for portable pumping system.
This patent application is currently assigned to FRANKLIN ELECTRIC COMPANY, INC.. The applicant listed for this patent is FRANKLIN ELECTRIC COMPANY, INC.. Invention is credited to Truman Jones, Paul Schlumpberger.
Application Number | 20140093403 13/832511 |
Document ID | / |
Family ID | 50385411 |
Filed Date | 2014-04-03 |
United States Patent
Application |
20140093403 |
Kind Code |
A1 |
Jones; Truman ; et
al. |
April 3, 2014 |
PORTABLE PUMPING SYSTEM
Abstract
A portable fluid pump including a frame; a first fuel reservoir
having a first upper boundary; a second fuel reservoir having a
second upper boundary; an engine disposed laterally between the
first and second fuel reservoirs; and a pump disposed laterally
between the first and second reservoirs. The pump includes an
intake pipe having a central axis; the central axis passing through
a first point that is located less than two inches above the first
upper boundary.
Inventors: |
Jones; Truman; (Corvallis,
OR) ; Schlumpberger; Paul; (Tualatin, OR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
FRANKLIN ELECTRIC COMPANY, INC. |
Bluffton |
IN |
US |
|
|
Assignee: |
FRANKLIN ELECTRIC COMPANY,
INC.
Bluffton
IN
|
Family ID: |
50385411 |
Appl. No.: |
13/832511 |
Filed: |
March 15, 2013 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
61707346 |
Sep 28, 2012 |
|
|
|
Current U.S.
Class: |
417/234 ;
417/364 |
Current CPC
Class: |
F04D 29/605 20130101;
F04D 13/16 20130101; F04D 29/669 20130101; F04D 13/02 20130101;
F04B 17/06 20130101 |
Class at
Publication: |
417/234 ;
417/364 |
International
Class: |
F04D 13/16 20060101
F04D013/16; F04D 29/66 20060101 F04D029/66 |
Claims
1. A portable fluid pump including: a frame; a first fuel reservoir
having a first upper boundary; a second fuel reservoir having a
second upper boundary; an engine disposed laterally between the
first and second fuel reservoirs; and a pump disposed laterally
between the first and second reservoirs; the pump including an
intake pipe having a central axis; the central axis passing through
a first point that is located less than two inches above the first
upper boundary.
2. The pump of claim 1, wherein the first point is between the
first and second reservoirs such that a line can be drawn through
the first point that intersects the first and second
reservoirs.
3. The pump of claim 1, wherein the first fuel reservoir is in
fluid communication with the second fuel reservoir.
4. The pump of claim 1, wherein the first and second upper
boundaries define a common height.
5. The pump of claim 1, wherein the first and second reservoirs are
mounted directly on a floor of the frame.
6. The pump of claim 1, further including an enclosure that
surrounds the frame, fuel reservoirs, engine, and pump, the
enclosure including an upper enclosure and lower enclosure.
7. The pump of claim 6, the upper enclosure being readily removable
from the lower enclosure and having a first use position in which
the upper enclosure is coupled to the lower enclosure and a second
use position in which the upper enclosure is uncoupled from the
lower enclosure.
8. The pump of claim 7, wherein the upper enclosure includes a
grate positioned to be vertically aligned with a muffler.
9. The pump of claim 8, wherein the muffler is located within a
muffler tray on all sides except the upper side formed by the
grate.
10. The pump of claim 9, wherein the muffler tray includes a fluid
outlet operable to provide egress to fluid that enters the muffler
tray.
11. The pump of claim 1, further including a tongue operable to
secure the pump to a vehicle; the tongue having a first use
position and a second collapsed position.
12. The pump of claim 11, wherein the tongue rotates between the
first use position and the second collapsed position, the tongue
being selectively fixable in both the first use position and the
second collapsed position.
13. A portable fluid pump including: a frame; a first fuel
reservoir having a first upper boundary; a second fuel reservoir
having a second upper boundary; an engine disposed laterally
between the first and second fuel reservoirs; a pump disposed
laterally between the first and second reservoirs; the pump
including an intake pipe that is located between the first and
second fuel reservoirs such a lower edge of the intake pipe is
vertically below a top edge of one of the first and second fuel
reservoirs and is horizontally between the first and second
reservoirs such that a line can be drawn that intersects both fuel
reservoirs and the lower edge of the intake pipe; and a housing
enclosing the frame, first and second fuel reservoirs, engine, and
pump.
14. The pump of claim 13, wherein the first fuel reservoir is in
fluid communication with the second fuel reservoir.
15. The pump of claim 13, wherein the first and second reservoirs
are mounted directly on a floor of the frame.
16. The pump of claim 13, the housing including an upper enclosure
readily removable from a lower enclosure and having a first use
position in which the upper enclosure is coupled to the lower
enclosure and a second use position in which the upper enclosure is
uncoupled from the lower enclosure.
17. The pump of claim 16, wherein the upper enclosure includes a
grate positioned to be vertically aligned with a muffler.
18. The pump of claim 17, wherein the muffler is located within a
muffler tray on all sides except the upper side formed by the
grate.
19. The pump of claim 13, further including a tongue operable to
secure the pump to a vehicle; the tongue having a first use
position and a second collapsed position.
20. The pump of claim 19, wherein the tongue rotates between the
first use position and the second collapsed position, the tongue
being selectively fixable in both the first use position and the
second collapsed position.
Description
PRIORITY
[0001] The present application is a non-provisional application
that claims priority to U.S. Provisional Patent Application No.
61/707,346, titled PORTABLE PUMPING SYSTEM WITH OPTIONAL SOUND
ATTENUATING ENCLOSURE, filed Sep. 28, 2012, the disclosure of which
is explicitly incorporated herein.
[0002] The present disclosure relates to portable pumping systems.
More particularly, the present disclosure relates to a portable
pumping system providing a compact and efficient package.
[0003] Pumping systems including a pump/engine combination
supported on a skid can be utilized for pumping fluid in a variety
of locations and circumstances. For example, portable pumping units
may be used in agriculture, construction, food processing, mining,
oil and gas, and a variety of municipal and industrial
applications. In certain applications, a centrifugal pump is
powered by a diesel engine supported on a frame, with the frame
being supported by at least one axle and an associated pair of
wheels.
[0004] In certain applications, sound attenuation is desired and/or
required. In other circumstances, sound attenuation is not needed.
In the past, manufacturers of portable pumps sold sound attenuated
pumps as well as open or unattenuated pumps. The open systems have
the advantage of easy access for maintenance of the pump and motor,
while the sound attenuated pump and motor combinations present
difficulties with accessing for maintenance owing to the cover
structure utilized to attenuate sound emanating from the pump and
motor combination.
[0005] Additionally, fuel tanks are often provided on the pumping
units to power the engine. Such fuel tanks, when loaded, possess a
moveable liquid load that has the potential to significantly impact
the center of mass for the entire package. In that the packages are
portable, a lower center of mass provides increased stability for
the package. Thus, fuel tanks are often placed low with the engine
and pump on top of the fuel tanks This places the pump at a
relatively high position. Such a high position increases the draw
that must be created by the pump to pump liquid therethrough
relative to lower positions.
SUMMARY
[0006] The present disclosure provides an optional sound
attenuation package which may be easily removed to create an open
configuration where sound attenuation is not required and/or where
access to the pump and motor combination is desired for, e.g.,
maintenance purposes.
[0007] According to a first embodiment of the present disclosure, a
portable fluid pump is provided including a frame; a first fuel
reservoir having a first upper boundary; a second fuel reservoir
having a second upper boundary; an engine disposed laterally
between the first and second fuel reservoirs; and a pump disposed
laterally between the first and second reservoirs. The pump
includes an intake pipe having a central axis; the central axis
passing through a first point that is located less than two inches
above the first upper boundary.
[0008] According to another embodiment of the present disclosure, a
portable fluid pump is provided including: a frame; a first fuel
reservoir having a first upper boundary; a second fuel reservoir
having a second upper boundary; an engine disposed laterally
between the first and second fuel reservoirs; a pump disposed
laterally between the first and second reservoirs; and a housing
enclosing the frame, first and second fuel reservoirs, engine, and
pump. The pump including an intake pipe that is located between the
first and second fuel reservoirs such a lower edge of the intake
pipe is vertically below a top edge of one of the first and second
fuel reservoirs and is horizontally between the first and second
reservoirs such that a line can be drawn that intersects both fuel
reservoirs and the lower edge of the intake pipe.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The above-mentioned and other features of the disclosure,
and the manner of attaining them, will become more apparent and
will be better understood by reference to the following description
of embodiments of the disclosure taken in conjunction with the
accompanying drawings, wherein:
[0010] FIG. 1A is a rear perspective view of an exemplary first
embodiment portable pump;
[0011] FIG. 1B is a front perspective view of the exemplary first
embodiment portable pump of FIG. 1A;
[0012] FIG. 2A is a rear perspective view of the exemplary first
embodiment portable pump with an upper shroud removed;
[0013] FIG. 2B is a front perspective view of the exemplary first
embodiment portable pump with the upper shroud removed.
[0014] FIG. 3A is a perspective partially exploded view of the
shroud and frame of a second embodiment portable pump;
[0015] FIG. 3B is a perspective partially exploded view of the
lower frame of FIG. 3A;
[0016] FIG. 3C is an plan front end view of the lower frame of FIG.
3A;
[0017] FIG. 4 is a partial perspective view of attachment points
located on the lower shroud;
[0018] FIG. 5 is a rear end plan view of the first embodiment pump
of FIG. 1B;
[0019] FIG. 6 is a rear perspective view of the upper shroud of the
first embodiment pump of FIG. 1B;
[0020] FIG. 7 is a rear partially cut-away view of the upper shroud
of the first embodiment pump of FIG. 1B; and
[0021] FIGS. 8A-B are perspective views of extended and refracted
hitch positions of the first embodiment pump of FIG. 1A.
DETAILED DESCRIPTION
[0022] FIG. 1 illustrates a portable pump assembly 8 in accordance
with a first embodiment of the present disclosure. The first
embodiment pump assembly 8 comprises sound attenuating enclosure 9,
frame 56, engine 18, pump 20, radiator 28, muffler 58, trailer
tongue 60, wheels 108, and other parts discussed below.
[0023] The sound attenuating enclosure 9 of the present disclosure
comprises a shroud formed by upper sound attenuating enclosure 10
and lower sound attenuating enclosure 12. The Shroud generally
provides an outer housing that encloses most of the rest of the
components of pump assembly 8.
[0024] Lower sound attenuating enclosure 12 is also referred to as
a "belly pan". Lower sound attenuating enclosure 12 includes
opening 14 sized to allow suction pipe 16 entrance into the sound
attenuating enclosure. In use, a gasket may be positioned between
suction pipe 16 and opening 14.
[0025] As illustrated in FIG. 1, upper sound attenuating enclosure
10 includes a pair of access doors 24 hingedly connected to
opposing sides of upper sound attenuating enclosure 10. As
illustrated in FIG. 2, access doors 24 may be supported in an open
position by pneumatic cylinders 26. In use, access doors 24 provide
easy access to the components of the pumping system contained
within the sound attenuating shroud, including engine 18 and pump
20. Doors 24 further include upper portions 70 and lower portions
72. Upper and lower portions 70, 72 are hinged relative to each
other. Upper and lower portions 70, 72 combine with upper sound
attenuating enclosure 10 and pneumatic cylinders 26 to form a four
bar linkage. The four bar linkage proscribes a closed lowered
position shown on the right side of FIG. 5 and a raised position
shown in FIG. 7. Movement of the four bar linkage to the raised
position causes "folding" of lower portion 72 to a position that
orients it substantially parallel and abutting upper portion 70.
Accordingly, clear sight lines and access is provided to the
interior of sound attenuating enclosure 9 when door 24 is in the
raised position. The movement of the four bar linkage also
proscribes that movement of the distal end lower portions 72 out of
the lowered position does not proscribe an arc about a fixed pivot
point, but rather initially has more of a vertical component than
that afforded by rotation around a fixed pivot point. As shown in
FIG. 5, fender 74 and wheel 76 are laterally adjacent lower
portions 72. Accordingly, the movement of the four bar linkage
allows lower portions 72 to raise without interference from fender
74 or wheel 76. The four bar linkage thus allows access while also
allowing portable pump assembly 8 to assume a lower position
relative to fender 74 and wheel 76, thereby allowing a lower center
of mass and improved stability. Left side lower portion 72 includes
a cut-out area that is sized and shaped to engage a frame portion
that receives discharge pipe 22. Accordingly, left side door 24 can
be opened and closed without disturbing discharge pipe 22 and while
maintaining operation of portable pump assembly 8.
[0026] Upper sound attenuating enclosure 10 also includes enclosure
removal hooks 42 and grates 78. The sound attenuating shroud of the
present disclosure is designed so that minimal disconnection steps
are required to remove upper sound attenuating enclosure 10 from
lower sound attenuating enclosure 12. Wiring connections employ
quick disconnects and the bolts connecting upper sound attenuating
enclosure 10 to lower sound attenuating enclosure 12 are easily
removed using simple tools. With upper sound attenuating enclosure
10 disconnected from lower sound attenuating enclosure 12, a crane
may be connected to enclosure removal hooks 42 to lift upper sound
attenuating enclosure 10 from the remainder of the assembly. Grates
78 are positioned in the upper surface of upper sound attenuating
enclosure 10. Grates 78 are located to allow air intake for
radiator 28 and located over muffler 58.
[0027] FIGS. 2A-B illustrate pump assembly 8 with upper enclosure
10 removed. With upper sound attenuating enclosure 10 removed, pump
20 and engine 18 radiator 28, and muffler 58 are more readily
viewable. Similarly, removal of upper sound attenuating enclosure
10 provides easier access for any individual wishing to work on
portable pump assembly 8. It should also be appreciated that pump
assembly 8 mounted on wheeled axle mount 68 is shown. However,
embodiments are envisioned where portable pump assembly 8 is
mounted on modular skid attachment having forklift tubes defined
therein.
[0028] With upper sound attenuating enclosure 10 removed, lower
sound attenuating enclosure 12 is more fully shown. Lower sound
attenuating enclosure 12 includes attachment feature 30 and upper
enclosure mounting tabs 32. Alignment and attachment feature 30 is
utilized to index upper sound attenuating enclosure 10 to lower
sound attenuating enclosure 12. As illustrated on FIG. 2A and 4,
lower sound attenuating enclosure 12 includes a plurality of
enclosure registering stops 30, only one of which is illustrated in
FIG. 4 for simplicity. Upper sound attenuating enclosure 10
includes a lower perimeter sized to fit about the perimeter of
lower sound attenuating enclosure 12. Enclosure registering stops
30 extend from the perimeter of lower sound attenuating enclosure
12 such that they present a shoulder which impedes further downward
movement of upper sound attenuating enclosure 10 relative to lower
sound attenuating enclosure 12. In this way, enclosure registering
stops 30 index upper sound attenuating enclosure 10 relative to
lower sound attenuating enclosure 12 to the final position
illustrated, e.g., in FIGS. 1A&B. In this position, upper
enclosure mounting tabs 32 (FIG. 4) can be utilized to secure upper
sound attenuating enclosure 10 to lower sound attenuating enclosure
12.
[0029] Upper enclosure mounting tabs 32 are illustrated in detail
in FIG. 4. Upper enclosure mounting tabs 32 are formed as cutout
tabs through a wall of lower sound attenuating enclosure 12. The
cutout defining each upper enclosure mounting tab 32 creates a
space in which movement along a first axis A.sub.1 is allowed.
Further, each upper enclosure mounting tab 32 is resilient along
axis A.sub.2 which is perpendicular to axis A.sub.1. Toward the
interior of lower sound attenuating enclosure 12, a weld nut is
secured to each upper enclosure mounting tab 32 such that the
thread of the interior of the weld nut is aligned with aperture of
each upper enclosure mounting tab 32. The movement allowed by each
upper enclosure mounting tab 32 facilitates securement of upper
sound attenuating enclosure 10 to lower sound attenuating enclosure
12. Specifically, upper sound attenuating enclosure 10 includes a
plurality of apertures through which lag bolts 64 can be positioned
to engage the weld nuts secured to each upper enclosure mounting
tab 32. Owning to the size of upper sound attenuating enclosure 10,
and the number of connection points, it is difficult to
simultaneously align all of the securement apertures in upper sound
attenuating enclosure 10 with the corresponding apertures in lower
sound attenuating enclosure 12. The moveability of upper enclosure
mounting tabs 32 in lower sound attenuating enclosure 12 greatly
facilitates this process.
[0030] Owing to the modularity of the present design, the upper and
lower sound attenuating enclosures may be used simultaneously, or
independently of each other. In certain circumstances, the lower
sound attenuating enclosure may be utilized without upper sound
attenuating enclosure, e.g., in oil transport applications in which
it is highly desirable to shield the pump and piping connections
from the ground beneath. Similarly, the upper sound attenuating
enclosure may be utilized by itself in cases where the components
of the system are sought to be shielded from the environment, e.g.,
precipitation. Finally, the two components may be utilized together
where sound attenuation is desired. To further facilitate shielding
from precipitation, rain caps 80 are utilized for certain upwardly
exposed items.
[0031] Enclosure 9 couples to and surrounds frame 56 as shown in
FIG. 3A. As shown in FIG. 3B, frame 56 includes base frame 82, bail
84, and muffler mount 86. Base frame 83 includes lateral fuel tubes
44, mounting structures 88, outer structure 90, and bail mount 92.
Fuel tubes 44 contain fuel tanks which will store fuel to power
engine 18. In the present embodiment, fuel tubes 44 are connected
so as to provide a single fuel reservoir. Fuel tubes 44 are
supplied with fuel via fuel supply neck 94. Mounting structures 88
provide surfaces and apertures that mate with other mounting
structures to secure engine 18, pump 20 and other internal parts
thereto. Outer structure 90 provides boundaries and lateral support
for fuel tubes 44. One end of outer structure 90 includes opening
14 that receives suction pipe 16 therethrough. Bail mount 92
provides surfaces and apertures that receive and secure to bail 84.
Bail mount 92 provides that bail 84 is mounted to and extends
upward from a position that is laterally interior of fuel tubes 44,
FIG. 3C.
[0032] Bail 84 includes left and right legs 96 and hook 98. Left
and right legs 96 form an A-frame and secure to bail mount 92. Left
and right legs 96 attach to each other to form an interior opening
in which engine 18, pump 20 and other pieces can be located. Hook
98 is secured to the top of left and right legs 96 and provides a
structure that extends out the top of upper sound attenuating
enclosure 10. Hook 98 includes a plurality of apertures that allow
for portable pump assembly 8 to be lifted via crane via attachment
thereto. Muffler mount 86 is a substantially horizontally extending
surface to which muffler 58 (and muffler tray 100) are mounted.
[0033] Engine 18 and pump 20 are positioned within sound
attenuating enclosure 9. In the present design, the pump and engine
are not positioned atop the fuel tank(s) as in prior designs, but
rather are positioned between lateral fuel tubes 44. Utilizing fuel
tubes 44 as part of the skid itself and positioning engine 18 and
pump 20 between fuel tubes 44 provide a number of advantages. For
example, this construction reduces the overall height of the unit,
lowers the center of gravity of the unit, and lowers the suction
side of the pump which facilitates an increase in net positive
suction head available (NPSHA). Further, lowering the intake
decreases the risk of cavitation at the impeller of a centrifugal
pump.
[0034] As shown most clearly in FIG. 5, the center of suction pipe
16 (central axis 120) is below the level of upper surface 102 of
lateral fuel tubes 44. In previous designs where suction pipe 16 is
mounted on top of gas tanks, the centerline of suction pipe 16
(when suction pipe 16 is a four inch inner diameter pipe) was at
least two inches plus the pipe wall thickness above the top of the
fuel tank. Accordingly, split fuel tubes 44 allow a lower suction
pipe 16 height while keeping fuel tubes 44 in abutment with floor
122 of frame 56. Split fuel tubes 44 further maintain an even fuel
weight distribution laterally and front-to-back.
[0035] Suction pipe 16 is fluidly connected to pump 20 which is in
further fluid communication with discharge pipe 22. In one
embodiment that utilizes enclosure 9, the discharge pipe extends
along a left side to exit enclosure 9 through aperture 50 (FIG. 3A)
defined front end 52 of upper sound attenuating enclosure 10 of
pump assembly 8. In another embodiment shown in Figs. lA-C and 6,
discharge pipe 22 exits enclosure 9 through exit aperture 40 at
least partially defined in door 24 of left side of upper sound
attenuating enclosure 10 and also defined in lower sound
attenuating enclosure 12.
[0036] In one exemplary embodiment, pump 20 comprises a centrifugal
pump. Referring to FIG. 2A, discharge pipe 22 includes check valve
36. Downstream of check valve 36 is pipe spool 38, which extends
through exit aperture 40 (FIG. 1) in lower sound attenuating
enclosure 12 to provide an outlet outside of the sound attenuating
shroud.
[0037] Muffler 58 muffles engine noise and also provides an outlet
for heat and exhaust. As shown in FIGS. 2A&B, muffler 58 is
mounted within muffler tray 100 and on muffler mount 86. Muffler 58
is mounted near the top of portable pump assembly 8 to facilitate
disposal of the heat and exhaust. Enclosure 9 provides a compact
package such that heat has the potential to build up therein.
Accordingly, muffler 58 is located within muffler tray 100. Muffler
tray 100 is illustratively metal and includes insulation in one
embodiment. Muffler tray 100 reflects some heat from muffler 58 and
redirects it upwards. As previously noted, upper sound attenuating
enclosure 10 includes grate 78 above muffler 58. Accordingly, heat
is able to readily dissipate upwards through grate 78.
[0038] Pump assembly 8 is designed with the expectation that it
will be used outside and subjected to weather. Grate 78 above
muffler 58 provides an opening where precipitation can enter sound
attenuating enclosure 9. Muffler tray 100 further provides a
barrier to such precipitation and prevents it from coming into
contact with other parts of portable pump assembly 8. Muffler tray
100 has an angled floor that guides precipitation (such as
rainwater) to an exit hole (not shown). A hose is connected to the
exit hole to channel the rainwater down and out below portable pump
assembly 8. Accordingly, muffler 58 is able to readily dissipate
heat through open grate 78 and also prevent precipitation from
having unmitigated access to components within sound attenuating
enclosure 9.
[0039] In one embodiment, muffler tray 100 not only isolates
exhaust and heat of muffler 58, but also contains other items, for
example diesel particulate filters (DPF) which may be utilized in
connection with Tier 4 engines.
[0040] As shown in FIG. 1A, upper sound attenuating enclosure 10
also has a hole 104 in its upper side that receives hook 98
therethrough. Hole 104 also presents an intrusion point for
precipitation. Accordingly, tray 106 (FIG. 2A&B) is provided.
Tray 106 is sized to have a perimeter that is larger than hole 104
such that precipitation that enters through hole 104 is received by
tray 106. Tray 106 also has an angled floor and an exit aperture.
The exit aperture directs precipitation into muffler tray 100 where
it is managed along with any precipitation directly received into
muffler tray 100.
[0041] Wheeled axle mount 68 of the portable pumping assembly 8
includes a pair of wheels 108 supporting frame 56 so that the unit
can be easily transported from one location to another. Further, an
end of the unit includes trailer tongue 60 for selective securement
to a hitch. Shown in FIGS. 8A&B, tongue 60 utilized with the
present disclosure is collapsible so that the unit can be easily
transported in other ways, e.g., on a flatbed truck, for example.
Referring to FIGS. 8A&B, trailer tongue 60 includes tongue
mount 110, first arm 112, second arm 114, hitch mount 116, and
removable bolts 118. Tongue mount 110 is fixedly coupled to frame
56. First and second arms are coupled to tongue mount 110 via bolts
118. First and second arms 112, 114 are also hingedly coupled to
hitch mount 116. When both bolts 118 engage first and second arms
112, 114 as shown in FIG. 8B, the orientation of trailer tongue 60
is fixed and provides for portable pump assembly 8 to be attached
to a hitch.
[0042] Upon removal of one bolt 118, the arms of the tongue can be
collapsed and rotated, with first arm 112 being folded toward
second arm 114 and finally second arm 114 being folded toward
tongue mount 110 to collapse arms 112, 114 against the tongue mount
110. The removed bolt 118 is then placed through apertures in
tongue mount 110 and second arm 114 to secure trailer tongue 60 in
the collapsed position. The collapsed position of trailer tongue 60
provides a more compact orientation thereof.
[0043] Enclosure 9 may further be utilized to preserve heat within
the pumping unit in extremely cold environments. Specifically, an
external heat source termed "heat module" is connected to an
exterior of the sound attenuating enclosure 9 and ducted to the
interior of sound attenuating enclosure 9. This heating module
could comprise a separate diesel system functioning to keep the
pump warm while it is not running so that very cold environments,
e.g., environments of -40.degree. F. will not adversely impact the
functionality of the portable pumping system of the present
disclosure. In this way, the sound attenuating shroud functions
like an igloo to preserve heat within the device.
[0044] While this invention has been described as having preferred
designs, the present invention can be further modified within the
spirit and scope of this disclosure. This application is therefore
intended to cover any variations, uses, or adaptations of the
invention using its general principles. Further, this application
is intended to cover such departures from the present disclosure as
come within known or customary practice in the art to which this
disclosure pertains and which fall within the limits of the
appended claims.
* * * * *