U.S. patent application number 12/191377 was filed with the patent office on 2010-02-18 for feeding device for liquid materials.
Invention is credited to Shun-Tsung LU.
Application Number | 20100037967 12/191377 |
Document ID | / |
Family ID | 41680426 |
Filed Date | 2010-02-18 |
United States Patent
Application |
20100037967 |
Kind Code |
A1 |
LU; Shun-Tsung |
February 18, 2010 |
FEEDING DEVICE FOR LIQUID MATERIALS
Abstract
A feeding device for liquid raw materials includes a storage
tank and a hydraulic cylinder. The storage tank includes an outer
tube, an inner tube, a receiving space, a front cap and a rear cap.
The inner tube is mounted coaxially in the outer tube. The
receiving space is defined between the inner and outer tubes. The
front cap is mounted on the inner and outer tubes and has a feeding
inlet communicating with the inner tube and a front outlet
communicating with the receiving space. The rear cap is mounted on
the inner and outer tubes and has a rear inlet communicating with
the receiving space. The hydraulic cylinder has a piston rod and a
piston connected to the piston rod and mounted movably in the inner
tube. Thus, the feeding device is simplified and quiet and can be
used to transport materials of different viscosities.
Inventors: |
LU; Shun-Tsung; (Taichung
Hsien, TW) |
Correspondence
Address: |
RABIN & Berdo, PC
1101 14TH STREET, NW, SUITE 500
WASHINGTON
DC
20005
US
|
Family ID: |
41680426 |
Appl. No.: |
12/191377 |
Filed: |
August 14, 2008 |
Current U.S.
Class: |
137/565.17 ;
137/571; 137/587 |
Current CPC
Class: |
Y10T 137/86035 20150401;
Y10T 137/86324 20150401; F04B 9/10 20130101; F04B 9/113 20130101;
F04B 23/023 20130101; Y10T 137/86187 20150401 |
Class at
Publication: |
137/565.17 ;
137/571; 137/587 |
International
Class: |
F04B 19/22 20060101
F04B019/22 |
Claims
1. A feeding device for liquid materials comprising a storage tank
comprising an outer tube having a front end; and a rear end; an
inner tube being mounted coaxially in and being spaced from the
outer tube and having a front end; and a rear end; a receiving
space being defined between the inner and outer tubes; a front cap
being mounted on the front ends of the inner and outer tubes and
having a feeding inlet being defined in the front cap and
communicating with the inner tube; and a front outlet being defined
in the front cap and communicating with the receiving space; and a
rear cap being mounted on the rear ends of the inner and outer
tubes and having a rear inlet defined in the rear cap and
communicating with the receiving space; and a hydraulic cylinder
being connected to the storage tank and having a piston rod being
mounted through the rear cap and extending into the inner tube; and
a piston being connected to the piston rod and being mounted
movably in the inner tube.
2. The feeding device for liquid materials as claimed in claim 1,
wherein the feeding device comprises multiple storage tanks
connected coaxially in series; the piston rod of the hydraulic
cylinder extends into the inner tubes of the storage tanks; and
multiple pistons are connected to the piston rod and are mounted
respectively in the inner tubes of the storage tanks.
3. The feeding device for liquid materials as claimed in claim 2,
wherein the rear cap of each storage tank further has a gas opening
defined through the rear cap and communicating with the inner tube
of the storage tank.
4. The feeding device for liquid raw materials as claimed in claim
1, wherein the rear cap further has a gas opening defined through
the rear cap and communicating with the inner tube.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of Invention
[0002] The present invention relates to a feeding device, and more
particularly to a feeding device for liquid materials.
[0003] 2. Description of the Related Art
[0004] A conventional feeding device may comprise a pump including
a motor and a gear set or a diaphragm pump to feed liquid
materials. However, the conventional mechanical or pneumatic pump
may produce a great deal of noises and vibrations during operating.
Thus, the conventional feeding device may cause unfavorable effects
on field workers. Additionally, the mechanical pump includes many
components like a rotor or bearings and has a complicated structure
and a high manufacturing cost. Furthermore, the conventional
mechanical and pneumatic pumps cannot feed different liquid
materials in different viscosities and is limited in use.
[0005] To overcome the shortcomings, the present invention provides
a feeding device for liquid materials to mitigate or obviate the
aforementioned problems.
SUMMARY OF THE INVENTION
[0006] The primary objective of the present invention is to provide
a feeding device for liquid materials that is driven by a hydraulic
power and has a simplified structure and cheap manufacturing
cost.
[0007] A feeding device for liquid raw materials in accordance with
the present invention comprises a storage tank and a hydraulic
cylinder. The storage tank includes an outer tube, an inner tube, a
receiving space, a front cap and a rear cap. The inner tube is
mounted coaxially in the outer tube. The receiving space is defined
between the inner and outer tubes. The front cap is mounted on the
inner and outer tubes and has a feeding inlet communicating with
the inner tube and a front outlet communicating with the receiving
space. The rear cap is mounted on the inner and outer tubes and has
a rear inlet communicating with the receiving space. The hydraulic
cylinder has a piston rod and a piston connected to the piston rod
and mounted movably in the inner tube. Thus, the feeding device is
simple and quiet and can be used to transport materials of
different viscosity.
[0008] Other objectives, advantages and novel features of the
invention will become more apparent from the following detailed
description when taken in conjunction with the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is a side view in partial section of a first
embodiment of a feeding device for liquid materials in accordance
with the present invention;
[0010] FIG. 2 is a cross sectional rear view of the front cap of
the first embodiment of the feeding device for liquid materials
along line 2-2 in FIG. 1;
[0011] FIG. 3 is a cross sectional rear view of the rear cap of the
first embodiment of the feeding device for liquid materials along
line 3-3 in FIG. 1;
[0012] FIG. 4 is an operational side view in partial section of the
first embodiment of the feeding device for liquid materials in FIG.
1;
[0013] FIG. 5 is a side view in partial section of a second
embodiment of the feeding device for liquid materials in accordance
with the present invention;
[0014] FIG. 6 is an operational side view in partial section of the
second embodiment of the feeding device for liquid materials in
FIG. 5; and
[0015] FIG. 7 is a schematic side view of a third embodiment of the
feeding device for liquid materials in accordance with the present
invention.
DETAILED DESCRIPTION OF THE INVENTION
[0016] With reference to FIGS. 1, 2, 3 and 4, a feeding device for
liquid materials in accordance with the present invention comprises
a storage tank (10) and a hydraulic cylinder (20).
[0017] The storage tank (10) comprises an outer tube (11), an inner
tube (12), a receiving space, a front cap (13) and a rear cap (16).
The outer tube (11) is thermal conductive and has a front end and a
rear end. The inner tube (12) is thermal conductive, is mounted
coaxially in and spaced from the outer tube (11) and has a front
end and a rear end. The receiving space is defined between the
inner and outer tubes (11, 12).
[0018] The front cap (13) is mounted on the front ends of the inner
and outer tubes (11, 12) and has a feeding inlet (14) and a front
outlet (15). The feeding inlet (14) is defined in the front cap
(13), communicates with the inner tube (12) and may be connected to
a divider connected to a liquid material supply and a liquid
material output through pipelines. The front outlet (15) is defined
in the front cap (13), communicates with the receiving space and
may be connected to a recycle device.
[0019] The rear cap (16) is mounted on the rear ends of the inner
and outer tubes (11, 12) and has a rear inlet (17) and a gas
opening (18). The rear inlet (17) is defined in the rear cap (16),
communicates with the receiving space between the inner and outer
tubes (11, 12) and may be connected to a supply of hot and cold
water through a pipeline. The gas opening (18) is defined through
the rear cap (16) and communicates with the inner tube (12).
[0020] The hydraulic cylinder (20) is connected to the storage tank
(10) and has a piston rod (21) and a piston (22). The piston rod
(21) is mounted through the rear cap (16), extends into the inner
tube (12) and has a distal end. The piston (22) is connected to the
distal end of the piston rod (21) and is mounted movably in the
inner tube (12). When the hydraulic cylinder (20) is actuated, gas
can flow in or out through the gas opening (18) of the rear cap
(16).
[0021] When the feeding device is in use, a liquid material (30) is
fed into the inner tube (12) through the feeding inlet (14) of the
front cap (13). The piston rod (21) of the hydraulic cylinder (20)
drives the piston (22) to perform a reciprocating and linear
movement and press against the liquid material (30) in the inner
tube (21).
[0022] Hot water can be introduced into the receiving space through
the rear inlet (17) of the rear cap (16) to heat the liquid
material (30) in the inner tube (12). Thus, the flow property of
the liquid material (30) can be adjusted and the liquid material
(30) can be fed at a suitable working temperature. Cold water can
also be introduced into the receiving space through the rear inlet
(17) of the rear cap (16) to cool the liquid material (30) in the
inner tube (12). Thus, the liquid material (30) can be adjusted to
a suitable temperature so as to facilitate the operation of the
hydraulic cylinder (20). Hot and cold water can be delivered to the
recycle device through the front outlet (15) of the front cap (13)
and recycled to the supply of hot and cold water.
[0023] With reference to FIGS. 5 and 6, multiple storage tanks (10)
can be connected coaxially in series and driven simultaneously by
the hydraulic cylinder (20). The piston rod (21) of the hydraulic
cylinder (20) extends through or into the inner tubes (12) of the
storage tanks (10) and multiple pistons (22) are connected to the
piston rod (21) and mounted respectively in the inner tubes (12) of
the storage tanks (10). Thus, the piston rod (21) can drive the
pistons (22) to pressing against the liquid material (30) in the
inner tubes (12).
[0024] With reference to FIG. 7, multiple storage tanks (10) are
arranged in parallel. Multiple hydraulic cylinders (20) are
connected respectively to the storage tanks (10) and are connected
to a hydraulic supply (40) through multiple pipelines. Thus, the
hydraulic cylinders (20) can drive the storage tanks (10) with the
same hydraulic supply (40).
[0025] The feeding device has a simplified structure and a low
manufacturing cost and is easy to repair and maintain.
Additionally, the feeding device is quiet because of the stability
of the hydraulic cylinder (20). Furthermore, by means of the design
of the inner (12) and outer tubes (11), the liquid material (30) in
the inner tube (12) can be heated or cooled by introducing hot or
cold water into the receiving space. The viscosity of the liquid
material (30) can be adjusted and feeding liquid materials in
different viscosities by the feeding device is easy and
convenient.
[0026] Even though numerous characteristics and advantages of the
present invention have been set forth in the foregoing description,
together with details of the structure and function of the
invention, the disclosure is illustrative only. Changes may be made
in detail, especially in matters of shape, size and arrangement of
parts within the principles of the invention to the full extent
indicated by the broad general meaning of the terms in which the
appended claims are expressed.
* * * * *