U.S. patent application number 10/505053 was filed with the patent office on 2005-05-19 for pump using waste tire.
Invention is credited to Lee, Sang-Young.
Application Number | 20050106047 10/505053 |
Document ID | / |
Family ID | 27751932 |
Filed Date | 2005-05-19 |
United States Patent
Application |
20050106047 |
Kind Code |
A1 |
Lee, Sang-Young |
May 19, 2005 |
Pump using waste tire
Abstract
Disclosed herein is a pump using a waste tire, capable of
providing high abrasion-resistance and corrosion-resistance, and
ensuring easy manufacture and maintenance, in addition to the
prevention of a water hammer and rupture due to cold. In the pump
of the present invention, a casing main body (110) is made of a
waste tire. An inlet port unit (130) is installed at a first
opening provided at a side of the waste tire, and a housing (120)
is installed at a second opening provided at another side of the
waste tire in such a way that an impeller (150) is set inside the
casing main body (110). An outlet port unit (140) is installed at
predetermined portion of the waste tire, thus acting as an outlet
port of the casing main body. A sub-vane (152) made of a waste tire
is removably mounted to a main vane (151) of the impeller.
Inventors: |
Lee, Sang-Young; (Seoul,
KR) |
Correspondence
Address: |
PENDORF & CUTLIFF
5111 MEMORIAL HIGHWAY
TAMPA
FL
33634-7356
US
|
Family ID: |
27751932 |
Appl. No.: |
10/505053 |
Filed: |
August 19, 2004 |
PCT Filed: |
November 14, 2002 |
PCT NO: |
PCT/KR02/02130 |
Current U.S.
Class: |
417/423.14 ;
417/423.1; 417/572 |
Current CPC
Class: |
F04D 29/4286 20130101;
F04D 29/2227 20130101; F04D 29/026 20130101; F04D 29/605 20130101;
F05D 2300/431 20130101; F04D 29/426 20130101 |
Class at
Publication: |
417/423.14 ;
417/423.1; 417/572 |
International
Class: |
F04B 017/00; F04B
035/04 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 23, 2002 |
KR |
2002-9784 |
Claims
1. A pump using a waste tire, the pump comprising: a housing
provided with an impeller, and a casing main body having an inlet
port and an outlet port, wherein said casing main body is made of a
waste tire while keeping an original shape of the waste tire, with
an inlet port unit being installed at a first opening which is
provided at a side of the waste tire, thus functioning as the inlet
port of the casing main body, and the housing being installed at a
second opening provided at another side of the waste tire opposite
to the first opening in such a way that the impeller is set inside
the casing main body, and an outlet port unit being installed at a
predetermined portion of the waste tire to function as the outlet
port of the casing main body.
2. The pump according to claim 1, wherein a sub-vane made of a
waste tire is removably mounted to a main vane of the impeller.
3. The pump according to claim 1, wherein liners used for easily
replacing the waste tire of the casing main body with another waste
tire are installed on inner surfaces of the housing and the inlet
port unit, respectively, which are provided on both sides of the
casing main body made of the waste tire.
4. The pump according to claim 1, wherein two U-shaped connecting
rings are fitted over two portions of the casing main body in
radial directions, 0 respectively, in such a way that both ends of
each of the connecting rings are fastened to the housing and the
inlet port unit, respectively.
5. The pump according to claim 1, wherein the housing and the inlet
port unit are fastened to liners by means of fastening pieces.
Description
TECHNICAL FIELD
[0001] The present invention relates generally to pumps which are
operated to feed a fluid to a target place through a pipe, and more
particularly, to a pump which is manufactured using a waste tire,
capable of providing high abrasion-resistance or
corrosion-resistance, allowing the pump to be easily manufactured,
enhancing the performance of the pump, and ensuring easy
maintenance of the pump due to easy replacement of components.
BACKGROUND ART
[0002] As well known to those skilled in the art, pumps are
machines which are operated to transfer a fluid, such as liquid or
gas, to a target place through a pipe, or are operated to send a
fluid contained in a low-pressure container to a high-pressure
container through a pipe. Such pumps have been widely used for
transferring water as well as special fluids, including oil,
several medicines, pulp, viscose, and sludge.
[0003] A basic performance of a pump is indicated by a head and a
flow rate. The head is defined as a maximum height of a fluid
raised by the pump. The flow rate is defined as a volume of a fluid
discharged per a unit time. There are various kinds of pumps
according to the heads, flow rates, and the kinds of fluids to be
handled.
[0004] The pumps are classified into several types according to
their structures, that is, reciprocating pumps, rotary pumps,
centrifugal pumps, axial pumps, friction pumps, etc. Further, the
pumps are classified into several types according to their
purposes, that is, feed pumps, deep well pumps, and others. In
addition, there is a vacuum pump which sucks air or other gases
from a container to form a vacuum in the container.
[0005] The conventional reciprocating pumps are designed such that
a piston or plunger reciprocates in a cylinder. During a
reciprocation of the piston or plunger in the cylinder, a
discharging valve and a sucking valve are alternately opened or
closed to discharge or suck a fluid, thus raising the fluid. Of the
conventional reciprocating pumps, a pump comprising a single
cylinder and a pair of valves is called by a single acting pump,
and an example thereof is a domestic well pump. In the case of the
single acting pump, the flow rate of a transferred fluid is
irregular. Thus, in order to keep the amount of the transferred
fluid uniform, the single acting pump is used in cooperation with a
double acting pump and/or a differential acting pump. The double
acting pump is suitable for acase where a target head is high and a
target flow rate is small, and is used in a hydraulic press, a
boiler and other equipment.
[0006] The conventional rotary pumps are designed such that a
component performing a piston movement is rotated. That is, a rotor
of the rotary pump performs a desired piston movement. Such rotary
pumps are classified into vane pumps, gear pumps, and screw pumps.
In this case, the vane pump is provided on its rotor with a
slidably moving vane without having a discharging valve or a
sucking valve. The gear pump is provided with two gears which
engage with each other. The rotary pump is smaller, in the
variation of the discharging amount of a fluid, than the
reciprocating pump, but is widely used for transferring various
kinds of fluids, that is, water, gasoline, lubricant, paints, and
asphalt. In addition, the rotary pump is widely used as an
automatically controlled hydraulic pump.
[0007] The conventional centrifugal pumps are designed such that a
spiral path is formed outside a rotating impeller, and are mainly
used in industrial fields. While water entering a center of the
pump passes the impeller, the pressure of water is increased.
Thereafter, water is discharged to the outside of the impeller,
passes the spiral path, and then arrives at an outlet of the pump.
Such centrifugal pumps are classified into two types, that is,
turbine pumps and volute pumps.
[0008] The turbine pump is designed such that water flowing from
the impeller passes between guide vanes, and then flows out of a
casing. The volute pump is not provided with such a guide vane. Of
the two types, the former is suitable for generating a high
head.
[0009] Particularly when a head is high, a multi-stage guide vane
is used in the centrifugal pump. That is, water flowing from the
guide vane of a first stage is led to an inlet of the guide vane of
a second stage. The centrifugal pump is most widely used in
industrial fields, including drainage, water supply, mines and
chemical industries. Especially, the centrifugal pump with a guide
vane improved to have considerable resistance to abrasion or
corrosion is suitable for transferring water with sludge, sewage,
pulp-mixed solution, gravel, and coal.
[0010] The axial pump is used in the case where a head is low and a
flow rate is high, and transfers water in an axial direction by
rotating a propeller-shaped impeller. Further, there has been
developed an axial pump which is capable of changing the
installation angle of the impeller during the operation of the
pump, in order to prevent the operational efficiency of the pump
from being reduced although the target flow rate is changed.
[0011] Further, the friction pump transfers fluid by an impeller
which is designed such that a plurality of radial recesses are
formed along a peripheral edge of a base plate of the impeller. As
the impeller rotates, a fluid having a predetermined viscosity
continuously moves between the recesses of the impeller and the
wall of a casing due to centrifugal force, thus being compressed
many times prior to being discharged. A shallow well pump is an
example of the friction pump. The shallow well pump is preferably
used as a small-capacity domestic well pump.
[0012] In addition, there are a jet pump, an air lift pump, etc.
The jet pump jets high-pressure water or steam from a nozzle so as
to suck water. The air lift pump raises a fluid using compressed
air. That is, a lift pipe is put into a fluid and compressed air
flows into the pump at its lower end, so that a mixture consisting
of the fluid and air is produced. At this time, the specific weight
of the mixture inside the lift pipe is reduced, so the fluid is
raised to a desired height.
[0013] However, the conventional pumps have a problem that they are
made of cast iron using castings, so abrasion-resistance and
corrosion-resistance are low. When the conventional pumps are used
for high-pressure pumping action, their weight and manufacturing
cost are increased, and besides, their manufacture is not easy.
Since it is difficult to replace worn components of the
conventional pumps with new ones, the maintenance cost of the pumps
is high, and the working efficiency while replacing the components
of the pumps is low.
[0014] Meanwhile, there occur pressure surges, a so-called water
hammer, when the fluid flow is abruptly changed in a fluid pipe.
When a valve, installed at a downstream portion of the fluid pipe
which is filled with fluid, is abruptly closed, the flow speed of
the fluid flowing in the fluid pipe is abruptly reduced and the
kinetic energy of the fluid is transformed into increased pressure,
so hydraulic impact is applied to the fluid pipe, thereby causing a
water hammer.
[0015] Such a phenomenon also occurs even when a closed valve is
abruptly opened. Assuming that a fluid is ideally incompressible
and the wall of the fluid pipe is made of a rigid material, a
pressure may become an infinite when the valve is instantaneously
closed. However, since, in fact, the fluid is somewhat compressible
and the wall of the fluid pipe is elastic, the wall is slightly
extended when the valve is closed, and the fluid is compressed,
with increased pressure. But, the increase in the pressure is
limited to a predetermined level.
[0016] For example, when a demand for electricity is abruptly
reduced or there occurs a sudden power failure, a valve installed
at an inlet of a turbine of a power plant is closed, so a water
hammer occurs in a pipe. At this time, a pipe line is undesirably
broken, so the power plant may be exposed to danger. Thus, in order
to prevent the water hammer, the closing speed of the valve must be
controlled on the basis of an accurate calculation, or a safety
valve must be additionally installed.
DISCLOSURE OF THE INVENTION
[0017] Accordingly, the present invention has been made keeping in
mind the above problems occurring in the prior art, and an object
of the present invention is to provide a pump using a waste tire,
which is easy to manufacture, has a high durability, and ensures
easy maintenance, and which prevents a water hammer from occurring,
in addition to the prevention of rupture of the pump due to cold,
without using an additional device, thus enhancing the performance
of the pump.
[0018] In order to accomplish the above object, the present
invention provides a pump using a waste tire, including a housing
provided with an impeller and a casing main body having an inlet
port and an outlet port, wherein the casing main body is made of a
waste tire, and an inlet port unit is installed at a first opening
which is provided at a side of the waste tire, thus functioning as
the inlet port of the casing main body, and the housing is
installed at a second opening provided at another side of the waste
tire opposite to the first opening, and an outlet port unit is
installed at a predetermined portion of the waste tire to function
as the outlet port of the casing main body.
[0019] Another object of the present invention is to provide a pump
using a waste tire, which is designed such that a sub-vane made of
a waste tire is removably mounted to a surface of a main vane of
the impeller rotating to force a fluid in a desired direction.
[0020] The present invention provides a pump, which is designed
such that a casing main body is made of a waste tire and a sub-vane
made of a waste tire is removably mounted to a main vane of an
impeller, thus allowing the pump to be easily manufactured and
reducing the manufacturing cost of the pump, and providing high
abrasion-resistance and corrosion-resistance, and ensuring easy
maintenance of the pump and reducing its maintenance cost due to
easy replacement of components, and which is designed such that the
casing main body has elasticity, thus preventing a water hammer
from occurring and preventing the pump from being frozen to
rupture, therefore enhancing the performance of the pump.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The above and other objects, features and other advantages
of the present invention will be more clearly understood from the
following detailed description taken in conjunction with the
accompanying drawings, in which:
[0022] FIG. 1 is a sectional view showing a pump using a waste tire
according to a primary embodiment of the present invention;
[0023] FIG. 2a is a perspective view showing an impeller included
in the pump according to the present invention;
[0024] FIG. 2b is a front view of the impeller shown in FIG.
2a;
[0025] FIG. 3 is a perspective view showing a pump using a waste
tire according to a second embodiment of the present invention;
and
[0026] FIG. 4 is a sectional view of the pump shown in FIG. 3.
BEST MODE FOR CARRYING OUT THE INVENTION
[0027] Reference should now be made to the drawings, in which the
same reference numerals are used throughout the different drawings
to designate the same or similar components.
[0028] FIG. 1 is a sectional view showing a pump according to a
primary embodiment of the present invention FIGS. 2a and 2b are a
perspective view and a front view showing an impeller according to
the present invention, respectively.
[0029] As shown in the drawings, the pump of the present invention
includes a housing 120 which is provided with an impeller 150 and a
casing main body 110 having an inlet port and an outlet port. In
this case, the casing main body 110 is made of a waste tire while
keeping an original shape of the waste tire. An inlet port unit 130
is hermetically installed at a first opening which is provided at a
side of the waste tire, thus functioning as the inlet port of the
casing main body 110. The housing 120 is hermetically installed at
a second opening provided at another side of the waste tire
opposite to the first hole in such a way that the impeller 150 is
set inside the casing main body 110. An outlet port unit 140 is
installed at a predetermined portion of the waste tire to function
as the outlet port of the casing main body 110. A sub-vane 152 made
of a waste tire is mounted to a leading surface of each main vane
151 of the impeller 150.
[0030] The reference numerals 210 and 220 denote liners installed
on the inner surfaces of the inlet port unit 130 and the housing
120, respectively. The liners 210 and 220 are used for easily
replacing the waste tire of the casing main body 110 with another
waste tire.
[0031] The inlet port unit 130 is fastened to the liner 210 by
means of fastening pieces 170, so that the fastening pieces 170
stably hold the inlet port unit 130 while preventing the inlet port
unit 130 from downwardly drooping.
[0032] According to the present invention, the casing main body 110
is made of a waste tire, that is, industrial wastes, while keeping
an original shape of the waste tire. Further, the housing 120 and
the inlet port unit 130 are installed at openings which are
provided at both sides of the waste tire, respectively, and the
outlet port unit 140 is installed at a predetermined portion of the
waste tire.
[0033] That is, the casing main body 110 is made of a waste tire
while keeping an original shape of the waste tire. The inlet port
unit 130 is hermetically installed at the first opening which is
provided at a side of the waste tire, thus functioning as the inlet
port of the casing main body 110. The housing 120 provided with the
impeller 150 is hermetically installed at the second opening which
is provided at another side of the waste tire to function as the
outlet port of the casing main body 110. In this case, the impeller
150 is set inside the casing main body 110.
[0034] Since the casing main body 110 is made of a waste tire
having elasticity, the pump of the present invention is superior to
conventional pumps in terms of corrosion-resistance and
abrasion-resistance. Although the size of the casing main body 110
is increased to accomplish a high-capacity pump, there are various
kinds of waste tires standardized according to their sizes, so the
casing main body 110 is more easily manufactured. Further, although
the size of the casing main body 110 is increased, the weight as
well as the cost of the waste tire of the casing main body 110 are
not greatly increased, thus allowing the pump to be easily
manufactured and carried with.
[0035] When it is necessary to service the casing main body 110,
the waste tire of the casing main body 110 is easily replaced with
another waste tire, thus ensuring easy replacement and maintenance
of components and reducing the replacement and maintenance cost. In
addition, it is not necessary to use an elastic pipe for preventing
or absorbing a vibration at the outlet port unit 140. Since the
casing main body 110 has elasticity, a desired arrangement of
components is easily achieved. Above all, the pump of the present
invention prevents a water hammer from occurring, because the
casing main body 110 has elasticity.
[0036] According to the present invention, a waste tire, that is, a
kind of industrial waste, is effectively recycled, thus
accomplishing an environmentally friendly effect, and preventing
the casing main body 110 from being frozen to rupture in severe
cold.
[0037] FIGS. 2a and 2b are a perspective view and a front view
showing an impeller included in the pump according to the present
invention, respectively. Since the sub-vane 152 made of a waste
tire is removably mounted to a leading surface of each main vane
151 of the impeller 150, the main vanes 151 are not worn but the
sub-vanes 152 mounted to the main vanes 151 are worn by the
rotation of the impeller 150. Further, each sub-vane 152 is made of
a waste tire, so it is not easily worn. However, although the
sub-vane 152 is worn, the waste tire of the sub-vane 152 is easily
replaced with another waste tire, thus prolonging the useful life
span of the impeller 150, therefore enhancing the durability and
performance of the pump.
[0038] FIGS. 3 and 4 are views showing a pump using a waste tire
according to a second embodiment of the present invention. Thick
beads 111a and 111b are provided along edges of two openings which
are provided at both sides of the waste tire. The housing 120 and
the inlet port unit 130 are installed at the two openings of the
waste tire, respectively. In this case, L-shaped flanges 121 and
131 are provided at predetermined portions on outer surfaces of the
housing 120 and the inlet port unit 130 so as to hold the beads
111a and 111b.
[0039] Further, two U-shaped connecting rings 160 are fitted over
two portions of the casing main body 110 in radial directions,
respectively, in such a way that both ends of each of the
connecting rings 160 are fastened to the housing 120 and the inlet
port unit 130, respectively. Such a configuration allows the inlet
port unit 130 to be reliably supported by the connecting rings 160,
thus preventing the inlet port unit 130 from downwardly
drooping.
[0040] According to the second embodiment of the present invention,
when the inlet port unit 130 and the housing 120 are installed at
the openings of the waste tire, the beads 111a and 111b provided
along the edges of the openings are supported by the L-shaped
flanges 121 and 131 which are provided on the outer surfaces of the
housing 120 and the inlet port unit 130, and both ends of the
U-shaped connecting rings 160 are fastened to the inlet port unit
130 and the housing 120, thus firmly and reliably maintaining the
assembled state of the casing main body 110, the inlet port unit
130 and the housing 120.
[0041] The U-shaped connecting rings 160 constantly maintain the
interval between the housing 120 and the inlet port unit 130 which
are in contact with the beads 111a and 111b, thus always keeping
the interval between the two beads 111a and 111b constant.
Industrial Applicability
[0042] As described above, the present invention provides a pump
using a waste tire which is not easily recycled as a kind of
industrial waste, which is designed such that a casing main body is
made of a waste tire and a sub-vane made of a waste tire is
removably mounted to a main-vane of an impeller, thus providing
high abrasion resistance and corrosion resistance, and allowing
easy manufacture of the pump and reducing the manufacturing cost of
the pump although the size of the pump is increased, and thus
ensuring easy replacement of components, therefore allowing the
pump to be easily and inexpensively repaired, and thus preventing a
water hammer from occurring, in addition to the prevention of the
rupture of the pump in severe cold.
[0043] Although the preferred embodiments of the present invention
have been disclosed for illustrative purposes, those skilled in the
art will appreciate that various modifications, additions and
substitutions are possible, without departing from the scope and
spirit of the invention as disclosed in the accompanying
claims.
* * * * *