CN208651714U - Rail traffic pressure-control check valve - Google Patents
Rail traffic pressure-control check valve Download PDFInfo
- Publication number
- CN208651714U CN208651714U CN201821153436.4U CN201821153436U CN208651714U CN 208651714 U CN208651714 U CN 208651714U CN 201821153436 U CN201821153436 U CN 201821153436U CN 208651714 U CN208651714 U CN 208651714U
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- valve
- core
- deck
- gasket
- valve body
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Abstract
The utility model discloses a kind of rail traffic pressure-control check valves, including core assembly (1), valve body (2), valve deck (3), reset spring (4) and O-ring (6)；Valve body is threadedly coupled with valve deck, and the junction of valve body and valve deck is arranged in O-ring, makes valve body and valve bonnet seal；Guide hole is equipped in valve deck, reset spring is mounted between valve deck and core assembly；Core assembly includes valve core, gasket, plain cushion and screw, and valve core is in ⊥ shape, and the guide rod adaptation on valve core top is mounted in valve deck guide hole；Gasket is inlaid in valve core bottom, plain cushion pad gasket bottom and be fixed by screws on valve core, screw is placed in the valve port of valve body, the sealing valve port of gasket and valve body.The utility model overflows the flowing of air by the annular gap limitation between valve deck and core assembly, reaches pressure stabilizing purpose, prevents the compressed air of total cylinder to air compressor cylinder adverse current when air compressor stops working, reduces compressed air leakage.
Description
Technical field
The utility model relates to a kind of check valve structure more particularly to a kind of rail traffic pressure-control check valves.
Background technique
The Slow Close pressure-control check valve of the prior art includes upper valve body and lower valve body, and the runner of perforation is formed in lower valve body,
The inlet and outlet of connection runner is offered in lower valve body, the intersection of inlet and outlet is formed with valve seat, is formed in upper valve body
There is valve chamber, axle sleeve is provided in valve chamber, valve rod is provided in axle sleeve, valve rod slip is arranged in axle sleeve, and valve rod corresponds to valve
One end of seat is linkedly set with flap, diaphragm is folded between upper valve body and lower valve body, diaphragm corresponds to valve chamber side and is connected
There is pressing plate, be arranged with pressure spring outside axle sleeve, the both ends of pressure spring are inconsistent with upper valve body and pressing plate respectively, and diaphragm is corresponding
Runner side is connected with flap.Although the slow closed check damper of the prior art can prevent impact from generating, and eliminate the noise with Slow Close
Effect, but structure is complicated for such Slow Close pressure-control check valve, and cost is higher.
Summary of the invention
The purpose of this utility model is to provide a kind of rail traffic pressure-control check valve, by valve deck and core assembly it
Between annular gap limitation overflow air flowing, achieve the purpose that pressure stabilizing, total wind can be prevented when air compressor stops working
The compressed air of cylinder is to air compressor cylinder adverse current, to reduce the leakage of compressed air.
The utility model is realized in this way:
A kind of rail traffic pressure-control check valve, including core assembly, valve body, valve deck, reset spring and O-ring；Valve body
It is threadedly coupled with valve deck, the junction of valve body and valve deck is arranged in O-ring, makes valve body and valve bonnet seal；Guide hole is equipped in valve deck,
Reset spring is mounted between valve deck and core assembly；Core assembly includes valve core, gasket, plain cushion and screw, valve core
In ⊥ shape, the guide rod adaptation on valve core top is mounted in valve deck guide hole；Gasket is inlaid in the bottom of valve core, plain cushion pad
Gasket bottom and be fixed by screws on valve core, screw is placed in the valve port of valve body, the valve of gasket and valve body
Mouth sealing.
Annular gap is equipped between the valve deck and core assembly.
There are gaps between at the top of the top of the core assembly guide rod and valve deck guide hole.
The gasket is made of rubber material.
The entrance end of the valve body is equipped with screw thread.
The utility model compared with prior art, has the following beneficial effects:
1, the utility model avoids the pressure oscillations because of compressor from leading to noise when core assembly impacts up and down
Or valve abrasion.
2, the core assembly of the utility model uses slow-closing structure, and structure is simple, low in cost.
3, the utility model uses the gasket of low temperature resistant nitrile rubber material, can reliably realize the extremely cold weather work of check-valves
Leakproofness under condition.
The utility model overflows the flowing of air by the annular gap limitation between valve deck and core assembly, reaches pressure stabilizing
Purpose, can be prevented when air compressor stops working the compressed air of total cylinder to air compressor cylinder adverse current, with reduce
The leakage of compressed air.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the utility model rail traffic pressure-control check valve；
Fig. 2 is the cross-sectional view of valve body in the utility model rail traffic pressure-control check valve.
In figure, 1 core assembly, 2 valve bodies, 3 valve decks, 4 reset springs, 6 O-rings, 7 valve cores, 8 gaskets, 9 plain cushions, 10
Screw.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments.
Refer to attached drawing 1 and attached drawing 2, a kind of rail traffic pressure-control check valve, including core assembly 1, valve body 2, valve deck
3, reset spring 4 and O-ring 6；Valve body 2 is threadedly coupled with valve deck 3, and the junction of valve body 2 Yu valve deck 3 is arranged in O-ring 6, is made
Valve body 2 and valve deck 3 seal；Guide hole is equipped in valve deck 3, reset spring 4 is mounted between valve deck 3 and core assembly 1；Core assembly
1 includes valve core 7, gasket 8, plain cushion 9 and screw 10, and valve core 7 is in ⊥ shape, and the guide rod on 7 top of valve core is adapted to installation
In 3 guide hole of valve deck；Gasket 8 is inlaid in the bottom of valve core 7, and plain cushion 9 pads the bottom in gasket 8 and consolidated by screw 10
Be scheduled on valve core 7, screw 10 is placed in the valve port of valve body 2, reset spring 4 to 1 active force of core assembly, make gasket 8 with
The sealing valve port of valve body 2.
The gasket 8 is made of rubber material, it is preferred that and low temperature resistant nitrile rubber can be selected and be made, it can be reliably real
Sealing of the existing check-valves under extremely cold weather operating condition.
It is equipped with annular gap between the valve deck 3 and core assembly 1, for limiting the flowing for overflowing air, has steady
Pressure effect, paves core assembly 1 and impacts up and down, and the pressure oscillation of compressor is made to will not result in noise or occur too early
Valve abrasion.
There are gaps between at the top of 3 guide hole of top and valve deck of 1 guide rod of core assembly, can 1 quilt of core assembly
When promotion, prevents the guide rod rapid increase of core assembly 1 and collide valve deck 3.
The entrance end of the valve body 2 is equipped with screw thread, for the connection installation of check valve system pipeline.
In use, core assembly 1 is promoted to leave the valve port of valve body 2 when air delivery starts, reset spring 4 is overcome
Active force.1 guide rod of core assembly acts as a piston, compresses upper part air, because valve deck 3 and core assembly 1 are led
The flowing of air is overflowed to the gap limitation between bar.Core assembly 1 is moved upwards because being paved, will not at the end of its impact
Hit valve deck 3.
After compressor is closed, when core assembly 1 moves downward, formation is few in the guide rod upper chambers of core assembly 1
Perhaps negative pressure.When core assembly 1 is back on the valve port of valve body 2 by compressed spring 4, core assembly 1 is paved again.
It is paved when moving up and down, core assembly 1 does not catch up with compressor continuously quick pressure oscillation, and whole
The position that its promotion is remained suspended in during a air delivery can effectively realize sealing, eliminate noise, and avoid and go out too early
Existing valve abrasion.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the protection scope of the utility model,
Therefore, any modification, equivalent substitution, improvement and etc. made within the spirit and principle of the present invention, should be included in
Within the protection scope of the utility model.
Claims (5)
1. a kind of rail traffic pressure-control check valve, it is characterized in that: including core assembly (1), valve body (2), valve deck (3), resetting
Spring (4) and O-ring (6)；Valve body (2) is threadedly coupled with valve deck (3), and the company in valve body (2) and valve deck (3) is arranged in O-ring (6)
Place is met, valve body (2) and valve deck (3) are sealed；Guide hole is equipped in valve deck (3), reset spring (4) is mounted on valve deck (3) and spool
Between component (1)；Core assembly (1) includes valve core (7), gasket (8), plain cushion (9) and screw (10), and valve core (7) is in
The guide rod adaptation of ⊥ shape, valve core (7) top is mounted in valve deck (3) guide hole；Gasket (8) is inlaid in valve core (7)
Bottom, plain cushion (9) pad the bottom in gasket (8) and are fixed on valve core (7) by screw (10), and screw (10) is placed in valve
In the valve port of body (2), the sealing valve port of gasket (8) and valve body (2).
2. rail traffic pressure-control check valve according to claim 1, it is characterized in that: the valve deck (3) and spool group
Annular gap is equipped between part (1).
3. rail traffic pressure-control check valve according to claim 1, it is characterized in that: the core assembly (1) is oriented to
There are gaps between at the top of the top of bar and valve deck (3) guide hole.
4. rail traffic pressure-control check valve according to claim 1, it is characterized in that: the gasket (8) is rubber
Material is made.
5. rail traffic pressure-control check valve according to claim 1, it is characterized in that: the inlet and outlet of the valve body (2)
End is equipped with screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821153436.4U CN208651714U (en) | 2018-07-20 | 2018-07-20 | Rail traffic pressure-control check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821153436.4U CN208651714U (en) | 2018-07-20 | 2018-07-20 | Rail traffic pressure-control check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208651714U true CN208651714U (en) | 2019-03-26 |
Family
ID=65785269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821153436.4U Active CN208651714U (en) | 2018-07-20 | 2018-07-20 | Rail traffic pressure-control check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208651714U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963737A (en) * | 2020-08-04 | 2020-11-20 | 上海国之鼎铁路机电有限公司 | Low-temperature-resistant main air cylinder high-pressure safety valve for rail transit |
| CN113915382A (en) * | 2020-07-08 | 2022-01-11 | 克诺尔车辆设备(苏州)有限公司 | Improved check valve for rail transit vehicles and method of manufacture |
-
2018
- 2018-07-20 CN CN201821153436.4U patent/CN208651714U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113915382A (en) * | 2020-07-08 | 2022-01-11 | 克诺尔车辆设备(苏州)有限公司 | Improved check valve for rail transit vehicles and method of manufacture |
| CN111963737A (en) * | 2020-08-04 | 2020-11-20 | 上海国之鼎铁路机电有限公司 | Low-temperature-resistant main air cylinder high-pressure safety valve for rail transit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |