CN203892654U - Low-pressure one-way valve - Google Patents
Low-pressure one-way valve Download PDFInfo
- Publication number
- CN203892654U CN203892654U CN201420213950.8U CN201420213950U CN203892654U CN 203892654 U CN203892654 U CN 203892654U CN 201420213950 U CN201420213950 U CN 201420213950U CN 203892654 U CN203892654 U CN 203892654U
- Authority
- CN
- China
- Prior art keywords
- piston assembly
- pressure
- housing
- check valve
- low pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000005336 cracking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Check Valves (AREA)
Abstract
The utility model relates to a low-pressure one-way valve which is structurally characterized in that an air inputting port is formed in one end of a casing, the other end of the casing is connected with an outlet pipe nozzle, a piston assembly, a rubber ring, a base disc, an elastic piece, an adjusting gasket and a locking gasket are arranged in the casing, the rubber ring is arranged in a gap between the piston assembly and the casing, one end of the piston assembly abuts against the gas input port, the other end of the piston assembly is in contact with one end of the elastic piece, the other end of the elastic piece is installed on the adjusting gasket, and the adjusting gasket is locked through the locking gasket. The low-pressure one-way valve is small in size, low in use pressure and good in reverse sealing performance. The working pressure is smaller than or equal to 0.02MPa, and the reverse sealing pressure is 0.02MPa.
Description
Technical field
The utility model relates to a kind of check valve, relates in particular to a kind of low pressure check valve, is mainly applicable to low pressure air-channel system, belongs to valve class technical field.
Background technique
One-way valve structures is simple, extensive use in various pneumatic, hydraulic control systems.In different systems, for different needs, the parameters such as the working pressure of one-way valve, cracking pressure, flow resistance and reverse seal request are different.For low pressure air-channel system, low cracking pressure and low pressure seal are the important indicators that one-way valve must ensure.But low pressure air passage one-way valve of the prior art is subject to the restriction of its structure, be difficult to meet the job requirement of low pressure air-channel system.
Summary of the invention
The utility model, for above-mentioned problems of the prior art, provides a kind of pressure and low low pressure check valve of sealing load opened, and has solved check valve in prior art and has been difficult to meet the problem that low pressure gas circuit system works requires.
The technical solution of the utility model is as follows:
A kind of check valve, one end of housing is provided with gas input port, the other end connection outlet ozzle of housing, in housing, be provided with piston assembly, cushion rubber, chassis, elastic component, adjustment pad and lock washer, between piston assembly and the gap of housing, cushion rubber is set, one end and the gas input port of piston assembly offset, an end in contact of the other end of piston assembly and elastic component, the elastic component the other end is arranged on to be adjusted on pad, adjusts pad and locks by lock washer.
Between described piston assembly and elastic component, be provided with chassis.
Described elastic component is spring.
Between described housing and outlet ozzle, pass through mechanical connection.
Between described housing and outlet ozzle, be provided with cushion rubber.
The utility model working pressure≤0.02MPa, oppositely sealing load is 0.02MPa.
The present invention's beneficial effect compared with prior art:
Cushion rubber choose the cracking pressure that makes the frictional force of piston assembly be less than valve, can ensure again the sealing between piston assembly and housing simultaneously.Spring curls up than height simultaneously, and rigidity is little, can make piston assembly open under low-force; Meet the job requirement of low pressure air-channel system.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, 1, housing, 2, piston assembly, 3, cushion rubber, 4, chassis, 5, spring, 6, adjust pad, 7, lock washer, 8, cushion rubber, 9, outlet ozzle.
Embodiment
Referring to accompanying drawing, in conjunction with specific embodiments, describe the utility model in detail.
Embodiment
As shown in Figure 1, comprise housing 1, piston assembly 2, cushion rubber 3, chassis 4, spring 5, adjust pad 6, lock washer 7 and outlet ozzle 9, described housing 1 is the passage that gas input port and part are installed, piston assembly 2 is arranged on housing 1 bottom, spring 5 one end contact with piston assembly by chassis, spring 5 the other ends are arranged on to be adjusted on pad 6, adjust pad 6 and be used for adjusting spring 5 and chassis 4, the decrement that piston assembly is 2, lock washer 7 is used for locking adjustment pad 6, cushion rubber 3 is used for the gap between packed-piston assembly and housing, outlet ozzle 9 is for the output interface of check valve, outlet ozzle 9 and housing 1 mechanical connection, piston assembly 2 can make check valve open and seal with the combination of cushion rubber 3.
Check valve working pressure≤0.02MPa, oppositely sealing load 0.02MPa.
Piston assembly 2 is in closed condition under the effect of spring 5, and cushion rubber 3 makes it ensure oppositely sealing.While starting working, gas flows into from housing 1, and inlet pressure raises, and when inlet gas active force is greater than after spring 5 pretightening forces, piston assembly 2 is opened, and gas is flow through smoothly.Spring 5 rigidity are very little, and pretightening force is also very little, therefore open pressure very low, thereby by tightening or loosening to change the pretightening force of adjusting pad 6 and can adjust spring, the requirement that can ensure to open meet≤0.02MPa of pressure.When product quits work, or outlet end pressure raises suddenly, and piston assembly 2 can again be closed under the effect of spring 5.
The above is specific embodiment of the utility model and the know-why used, and any equivalent transformation based on technical solutions of the utility model basis, within all belonging to protection domain of the present utility model.
Claims (6)
1. a low pressure check valve, the one end that it is characterized in that housing (1) is provided with gas input port, the other end connection outlet ozzle (9) of housing (1), in housing (1), be provided with piston assembly (2), cushion rubber (3), chassis (4), elastic component, adjust pad (6) and lock washer (7), cushion rubber (3) is set between piston assembly (2) and the gap of housing, one end and the gas input port of piston assembly (2) offset, the other end of piston assembly (2) and an end in contact of elastic component, the elastic component the other end is arranged on to be adjusted on pad (6), adjust pad (6) by lock washer (7) locking.
2. low pressure check valve according to claim 1, is characterized in that being provided with chassis (4) between described piston assembly (2) and elastic component.
3. low pressure check valve according to claim 1 and 2, is characterized in that described elastic component is spring (5).
4. low pressure check valve according to claim 1, is characterized in that passing through mechanical connection between described housing (1) and outlet ozzle (9).
5. low pressure check valve according to claim 1, is characterized in that being provided with cushion rubber (8) between described housing (1) and outlet ozzle (9).
6. low pressure check valve according to claim 1, is characterized in that working pressure≤0.02MPa, and oppositely sealing load is 0.02MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213950.8U CN203892654U (en) | 2014-04-29 | 2014-04-29 | Low-pressure one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213950.8U CN203892654U (en) | 2014-04-29 | 2014-04-29 | Low-pressure one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892654U true CN203892654U (en) | 2014-10-22 |
Family
ID=51719059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213950.8U Expired - Lifetime CN203892654U (en) | 2014-04-29 | 2014-04-29 | Low-pressure one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203892654U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608300A (en) * | 2019-10-29 | 2019-12-24 | 沈阳航天新光集团有限公司 | One-way interface gas circuit replacing device |
| WO2021035625A1 (en) * | 2019-08-29 | 2021-03-04 | Engineered Controls International, Llc | Pressure-relief valve |
-
2014
- 2014-04-29 CN CN201420213950.8U patent/CN203892654U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021035625A1 (en) * | 2019-08-29 | 2021-03-04 | Engineered Controls International, Llc | Pressure-relief valve |
| CN110608300A (en) * | 2019-10-29 | 2019-12-24 | 沈阳航天新光集团有限公司 | One-way interface gas circuit replacing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |
|
| CX01 | Expiry of patent term |