CN210423841U - Non-pressure-difference one-way valve - Google Patents
Non-pressure-difference one-way valve Download PDFInfo
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- CN210423841U CN210423841U CN201921352123.6U CN201921352123U CN210423841U CN 210423841 U CN210423841 U CN 210423841U CN 201921352123 U CN201921352123 U CN 201921352123U CN 210423841 U CN210423841 U CN 210423841U
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- valve body
- limiter
- spherical piston
- air inlet
- check valve
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The non-differential pressure check valve comprises a valve body, wherein a cavity is arranged in the valve body, an air inlet hole is arranged at the upper part of the valve body, an air outlet hole is arranged at one side of the valve body, and the air inlet hole and the air outlet hole are both communicated with the cavity; a limiter is arranged in the cavity, and a spherical piston is arranged in the limiter; the limiter is communicated with the air inlet hole and the air outlet hole; the limiter is fixedly connected with the inner side of the valve body; the lower end of the limiter is provided with a baffle ring for preventing the spherical piston from falling; the diameter of the spherical piston is smaller than the inner diameter of the stopper; the diameter of the spherical piston is larger than the inner diameter of the air inlet hole; the lower end of the valve body is also provided with an air outlet; simple structure, convenient to use adopts the spherical piston that can freely move about, can not produce pressure differential, can not lead to the check valve to take place offset or slope because of the inclined to one side.
Description
The technical field is as follows:
the utility model belongs to the technical field of check valve equipment technique and specifically relates to a non-pressure difference check valve that says so.
Background art:
at present, a check valve in the prior art generally includes a valve housing, a piston (diaphragm assembly) movably disposed in the valve housing, and a spring connected to the piston (diaphragm assembly) to provide a predetermined tightening force to the piston (diaphragm assembly) through the spring, and move through the piston (diaphragm assembly) to enable the valve housing to be in a state of being communicated with an air inlet and an air outlet or being closed.
When the existing check valve is conducted, fluid flows from one end of the valve body to the other end of the valve body through the piston (diaphragm assembly), and in the flowing process, the fluid firstly overcomes the preset tightening force of the spring on the piston (diaphragm assembly), so that the fluid pressure at the two ends of the air inlet and outlet generates pressure difference; in addition, the check valve is widely applied, sometimes the air inlet and outlet ports are not always straight, and most of the air inlet and outlet ports are also deviated (namely, the flow direction of fluid does not flow along a straight line).
The invention content is as follows:
for solving the problem, overcome the not enough of prior art, the utility model provides a there is pressure differential and takes place the non-pressure difference check valve of the problem of leaking the backward flow when the inclined to one side expert flows to the check valve among the prior art when using.
In order to achieve the purpose, the non-pressure-difference check valve provided by the utility model comprises a valve body, a cavity is arranged in the valve body, an air inlet hole is arranged at the upper part of the valve body, an air outlet hole is arranged at one side of the valve body, and the air inlet hole and the air outlet hole are both communicated with the cavity; the cavity is internally provided with a limiter, and the limiter is internally provided with a spherical piston.
Further, the stopper adopts one of a spring-like structure or a cylindrical cage-like structure.
Furthermore, the limiter is communicated with the air inlet hole and the air outlet hole.
Furthermore, the stopper is fixedly connected with the inner side of the valve body.
Furthermore, the lower end of the limiting stopper is provided with a baffle ring for preventing the spherical piston from falling down.
Further, the diameter of the spherical piston is smaller than the inner diameter of the stopper.
Further, the diameter of the spherical piston is larger than the inner diameter of the air inlet hole.
Furthermore, the spherical piston is made of light rubber materials.
Further, the lower end of the valve body is also provided with an air outlet.
The utility model has the advantages that:
the utility model provides a non-pressure difference check valve, simple structure, convenient to use compares with the check valve among the prior art, the utility model discloses a but free movement's spherical piston need not resist spherical piston prestressing force when the inlet port inserts high-pressure gas, so can not produce the pressure differential, spherical piston rises and plugs up the inlet port under the effect of inside atmospheric pressure after cutting off high-pressure gas, no matter open or closed state, can not produce the pressure differential all to the direction of spherical piston atress is always parallel with the valve body, can not lead to the check valve to take place offset or slope because of oblique expert.
The ball piston is only acted by gravity and gas, and is not affected by mechanical force such as a spring and the like, so that the deviation or inclination of the one-way valve caused by complex stress is avoided.
The check valve is provided with two air outlets which are respectively arranged at the side edge and the lower end, so that the check valve can be communicated directly or partially, and the use scene is wider and richer.
Be provided with the stopper in the cavity, the stopper can play the limiting displacement to spherical piston, prevents that spherical piston from falling to the position of deviation when not working, and under the restriction of stopper, spherical piston can only move in the vertical direction. The stopper lower extreme is provided with keeps off the ring, can prevent that spherical piston from falling outside the stopper.
The diameter of the spherical piston is between the inner diameter of the limiter and the inner diameter of the air inlet hole, so that the spherical piston can freely move in the limiter in the vertical direction on one hand, and the air inlet hole can be completely blocked on the other hand, and leakage cannot occur.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the working state structure of the present invention;
in the drawings: 1. the valve comprises a valve body, 2, a cavity, 3, an air inlet, 4, an air outlet, 5, a spherical piston, 6, a limiter, 7 and a baffle ring.
The specific implementation mode is as follows:
in order to make the purpose, technical solution and advantages of the present invention clearer, the following will combine the attached drawings 1 and 2 of the present invention to perform more detailed description of the present invention.
The utility model provides a non-pressure-difference check valve, which comprises a valve body 1, wherein a cavity 2 is arranged inside the valve body 1, an air inlet 3 is arranged at the upper part of the valve body 1, an air outlet 4 is arranged at one side of the valve body 1, and the air inlet 3 and the air outlet 4 are both communicated with the cavity 2; a limiter 6 is arranged in the chamber 2, and a spherical piston 5 is arranged in the limiter 6; the limiter 6 adopts one of a spring-shaped structure or a cylindrical cage-shaped structure; the limiter 6 is communicated with the air inlet hole 3 and the air outlet hole 4; the limiter 6 is fixedly connected with the inner side of the valve body 1; the lower end of the limiter 6 is provided with a baffle ring 7 for preventing the spherical piston 5 from falling; the diameter of the spherical piston 5 is smaller than the inner diameter of the stopper 6; the diameter of the spherical piston 5 is larger than the inner diameter of the air inlet hole 3; the spherical piston 5 is made of light rubber material; the lower end of the valve body 1 is also provided with an air outlet 4.
The utility model discloses a one of them embodiment as follows:
the utility model solves the problems of pressure difference existing when the check valve in the prior art is used and leakage and backflow occurring when the check valve is in a deflected flow direction by improving the internal structure of the valve body 1;
a hollow cavity 2 is arranged in the valve body 1, an air inlet 3 is arranged at the upper part of the valve body 1, air outlet holes 4 are arranged at the side surface and the lower end of the valve body 1, and the air inlet 3 and the air outlet holes 4 are both communicated with the cavity 2 to form a smooth gas circulation structure;
a limiter 6 is arranged in the cavity 2, the limiter 6 can adopt one of a spring-shaped structure or a cylindrical cage-shaped structure, the two structures are hollow, the limiter 6 is communicated with the air inlet 3 and the air outlet 4, and air can smoothly circulate; the lower end of the limiter 6 is provided with a baffle ring 7, and the baffle ring 7 is also of a hollow structure, so that the gas circulation is facilitated; the retainer 6 is changed into a hollow cylindrical structure with the upper end completely open and the lower end provided with a barrier by arranging the retaining ring 7;
a spherical piston 5 is arranged in the limiter 6, the diameter of the spherical piston 5 is smaller than the inner diameter of the limiter 6 and larger than the inner diameter of the air inlet 3, the spherical piston 5 can freely move in the vertical direction in the space above the baffle ring 7 in the limiter 6, and in an opening state, the spherical piston 5 falls on the baffle ring 7 under the action of gravity; in the closed state, the spherical piston 5 is pressed against the lower end of the air inlet 3 by the action of gas pressure and blocks the air inlet 3.
The spherical piston 5 is made of light rubber materials, the surface of the spherical piston is elastic, the spherical piston is light in weight, the spherical piston can lift up to block the air inlet 3 under the action of gas pressure, and meanwhile, the spherical piston can more tightly block the air inlet 3 due to the fact that the surface of the spherical piston is elastic.
At the actual working time, inlet port 3 is connected with outside intake pipe, and venthole 4 also is connected with other external equipment, the utility model discloses an operating condition divide into three kinds of states:
in an initial state, no gas flows in the gas inlet hole 3 and the gas outlet hole 4, no gas pressure exists, the spherical piston 5 falls on the baffle ring 7 under the gravity state, and the non-pressure-difference one-way valve is in an open state;
in the working state, the air inlet hole 3 is used for air inlet, the air outlet hole 4 is used for air outlet, the spherical piston 5 receives the pressure of the air entering from the upper part and falls on the baffle ring 7, and the non-pressure-difference one-way valve is in an open state;
in a closed state, no gas enters the gas inlet hole 3, the air pressure outside the gas outlet hole 4 is high, the gas can flow to the direction with low air pressure, namely the gas inlet hole 3, the spherical piston 5 is lifted to the gas inlet hole 3 by the air pressure of the return air flow at the gas outlet hole 4 and blocks the gas inlet hole 3, and the non-pressure-difference one-way valve is in a closed state.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A non-pressure-difference one-way valve comprises a valve body (1), wherein a cavity (2) is arranged in the valve body (1), an air inlet hole (3) is formed in the upper portion of the valve body (1), an air outlet hole (4) is formed in one side of the valve body (1), and the air inlet hole (3) and the air outlet hole (4) are communicated with the cavity (2); the method is characterized in that: a limiter (6) is arranged in the cavity (2), and a spherical piston (5) is arranged in the limiter (6).
2. The non-pressure differential check valve of claim 1, wherein: the limiting stopper (6) is of one of a spring-shaped structure or a cylindrical cage-shaped structure.
3. The non-pressure differential check valve of claim 2, wherein: the limiter (6) is communicated with the air inlet hole (3) and the air outlet hole (4).
4. The non-pressure differential check valve of claim 3, wherein: and the limiter (6) is fixedly connected with the inner side of the valve body (1).
5. The non-pressure differential check valve of claim 4, wherein: the lower end of the limiter (6) is provided with a baffle ring (7) for preventing the spherical piston (5) from falling down.
6. The non-pressure differential check valve of claim 1, wherein: the diameter of the spherical piston (5) is smaller than the inner diameter of the stopper (6).
7. The non-pressure differential check valve of claim 6, wherein: the diameter of the spherical piston (5) is larger than the inner diameter of the air inlet hole (3).
8. The non-pressure differential check valve of claim 7, wherein: the spherical piston (5) is made of light rubber materials.
9. The non-pressure differential check valve of claim 1, wherein: the lower end of the valve body (1) is also provided with an air outlet (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921352123.6U CN210423841U (en) | 2019-08-20 | 2019-08-20 | Non-pressure-difference one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921352123.6U CN210423841U (en) | 2019-08-20 | 2019-08-20 | Non-pressure-difference one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210423841U true CN210423841U (en) | 2020-04-28 |
Family
ID=70363332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921352123.6U Active CN210423841U (en) | 2019-08-20 | 2019-08-20 | Non-pressure-difference one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210423841U (en) |
-
2019
- 2019-08-20 CN CN201921352123.6U patent/CN210423841U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 272600 No. 8, Huayu Road, quanpu Industrial Park, Liangshan County, Jining City, Shandong Province Patentee after: Shandong Kangjian Automobile Technology Co.,Ltd. Address before: 272613 No.8 Huayu Road, quanpu Industrial Park, Liangshan County, Jining City, Shandong Province Patentee before: SHANDONG KANGJIAN AUTO PARTS TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A non differential pressure check valve Effective date of registration: 20220222 Granted publication date: 20200428 Pledgee: Industrial and Commercial Bank of China Limited Liangshan sub branch Pledgor: Shandong Kangjian Automobile Technology Co.,Ltd. Registration number: Y2022980001726 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230316 Granted publication date: 20200428 Pledgee: Industrial and Commercial Bank of China Limited Liangshan sub branch Pledgor: Shandong Kangjian Automobile Technology Co.,Ltd. Registration number: Y2022980001726 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |