CN208703210U - Decompression venting valve - Google Patents
Decompression venting valve Download PDFInfo
- Publication number
- CN208703210U CN208703210U CN201821201031.3U CN201821201031U CN208703210U CN 208703210 U CN208703210 U CN 208703210U CN 201821201031 U CN201821201031 U CN 201821201031U CN 208703210 U CN208703210 U CN 208703210U
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- valve
- valve port
- diaphragm
- spool
- valve body
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Abstract
A kind of decompression venting valve, since the upper surface of the spool at it is equipped with the ring-like valve port diaphragm that a cross section is rectangle, and valve port is sealed against by the upper surface of the valve port diaphragm, i other words the upper surface for being used to seal the valve port diaphragm of valve port is plane, accordingly even when having impurity residual on the surface, valve port diaphragm can also live sealing valve port closely with the bottom end face contact of valve port, therefore the structure of the utility model is more reasonable, better tightness.
Description
Technical field
The utility model relates to a kind of decompression venting valves.
Background technique
It is currently used in the decompression venting valve that natural gas, liquefied gas, coal gas etc. are used to control various gas disengaging, its valve body
Interior valve port is in close contact by the upper surface of spool and the lower end surface of valve port to be sealed, but since current decompression is steady
The upper surface of the spool of pressure valve is that inclined-plane often has the inclined-plane that some impurity remain in spool after used a period of time
On, at this moment even the state in closing still has gas to pass through from valve port, exit is flowed to, that is, there are some gases to leak out, because
The leakproofness of this current decompression venting valve is poor.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, a kind of structurally reasonable, good airproof performance subtract is provided
Press pressure maintaining valve.
In order to solve above-mentioned technical problem, the utility model is adopted the following technical solutions:
A kind of decompression venting valve, including valve body, be located at the intracorporal spool of valve, and be respectively provided at valve body top and bottom
Valve seat and bottom cover, on the valve body be equipped with fluid inlet and fluid outlet, be located at the fluid inlet and fluid
Valve port is equipped in valve body between outlet；It is equipped with valve deck in the upper end of the valve seat, in the valve body, valve seat and valve deck
Middle part is equipped with perforation；It is connect after the top of the spool is equipped with and sequentially passes through valve seat, the through-hole on valve body with spool
Pull rod；It is equipped with piston and piston cylinder on the periphery wall of the pull rod, is equipped with one end and piston in the top for being located at piston cylinder
The connection of cylinder upper end, the spring that the other end is connect with adjusting nut；It is in equipped with cross section in the upper surface periphery of the spool
Rectangular ring-like valve port diaphragm, the valve port are in close contact by the upper surface of the valve port diaphragm with its bottom face close later
Envelope.
In the improvement project to above-mentioned decompression venting valve, sealing diaphragm is equipped between the valve deck and valve seat.
Compared with prior art, the utility model has the beneficial effects that the upper surface due to the spool at it is equipped with a cross
The ring-like valve port diaphragm that section is rectangle, and valve port is sealed against by the upper surface of the valve port diaphragm, i other words being used to
The upper surface for sealing the valve port diaphragm of valve port is plane, accordingly even when having impurity residual on the surface, valve port diaphragm also can be tight
Thickly with the bottom end face contact of valve port, sealing valve port is lived, therefore its structure is more reasonable, better tightness.
The utility model is described in further detail with specific embodiment with reference to the accompanying drawing:
[Detailed description of the invention]
Fig. 1 is the stereoscopic schematic diagram of the utility model embodiment；
Fig. 2 is the assembling schematic diagram of the utility model embodiment；
Fig. 3 is the structural schematic diagram of the utility model embodiment.
[specific embodiment]
A kind of decompression venting valve, as shown in Figures 1 to 3, including valve body 1, the spool 2 being located in valve body 1, and setting respectively
Valve seat 3 and bottom cover 4 in 1 top and bottom of valve body are equipped with fluid inlet 11 and fluid outlet 12 on the valve body 1,
Valve port 13 is equipped in valve body 1 between the fluid inlet 11 and fluid outlet 12；It is set in the upper end of the valve seat 3
There is valve deck 5, is equipped with perforation at the middle part of the valve body 1, valve seat 2 and valve deck 5；The top of the spool 2 be equipped with according to
The pull rod 6 being connect after the secondary through-hole on valve seat 2, valve body 1 with spool 2；Piston is equipped on the periphery wall of the pull rod 6
7 and piston cylinder 8, one end, which is equipped with, in the top for being located at piston cylinder 8 connect with 8 upper end of piston cylinder, the other end and the company of adjusting nut 9
The spring 10 connect；It is equipped with the ring-like valve port diaphragm 20 that cross section is rectangle in the upper surface periphery of the spool 2, it is described
Valve port 13 is in close contact sealing later by the upper surface of the valve port diaphragm 20 and its bottom face.Since the utility model is in spool
2 upper surface is equipped with the ring-like valve port diaphragm 20 that a cross section is rectangle, and valve port 13 is by the upper of the valve port diaphragm 20
Surface is sealed against, i other words the upper surface for being used to seal the valve port diaphragm 20 of valve port 13 is plane, accordingly even when there is impurity
On the surface, valve port diaphragm can also live sealing valve port closely with the bottom end face contact of valve port 13 residual, therefore this is practical
Novel structure more rationally, better tightness.
In embodiment as shown in Figure 2,3, it is equipped with sealing diaphragm 30 between the valve deck 5 and valve seat 2, in this way can
Further strengthen the leakproofness of entire decompression venting valve so that decompression venting valve in off position when do not have gas and leak out
Come.
Although the utility model is described in detail referring to above example, by the disclosure for those skilled in the art
Member is not it is readily apparent that and the case where departing from the principles of the present invention and scope that the claim limits
Under, the utility model can be made a variety of changes or be modified.Therefore, the detailed description of the embodiment of the present disclosure is only used to explain, and
It is not intended to limit the utility model, but is defined by the subject-matter of the claims the range of protection.
Claims (2)
1. a kind of decompression venting valve, including valve body, be located at the intracorporal spool of valve, and be respectively provided at valve body top and bottom
Valve seat and bottom cover are equipped with fluid inlet and fluid outlet on the valve body, go out being located at the fluid inlet and fluid
Valve port is equipped in valve body between mouthful；It is equipped with valve deck in the upper end of the valve seat, in the valve body, valve seat and valve deck
Portion is equipped with perforation；The drawing for sequentially passing through and connecting after valve seat, the through-hole on valve body with spool is equipped in the top of the spool
Bar；It is equipped with piston and piston cylinder on the periphery wall of the pull rod, is equipped with one end and piston cylinder in the top for being located at piston cylinder
Upper end connection, the spring that the other end is connect with adjusting nut；It is characterized in that, the upper surface periphery in the spool is equipped with
The ring-like valve port diaphragm that cross section is rectangle, the valve port are closely connect by the upper surface of the valve port diaphragm with its bottom face
It seals after touch.
2. decompression venting valve according to claim 1, which is characterized in that be equipped with sealing between the valve deck and valve seat
Diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821201031.3U CN208703210U (en) | 2018-07-26 | 2018-07-26 | Decompression venting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821201031.3U CN208703210U (en) | 2018-07-26 | 2018-07-26 | Decompression venting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208703210U true CN208703210U (en) | 2019-04-05 |
Family
ID=65940545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821201031.3U Active CN208703210U (en) | 2018-07-26 | 2018-07-26 | Decompression venting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208703210U (en) |
-
2018
- 2018-07-26 CN CN201821201031.3U patent/CN208703210U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |