CN220248965U - Relief valve convenient to wash sealed face - Google Patents
Relief valve convenient to wash sealed face Download PDFInfo
- Publication number
- CN220248965U CN220248965U CN202321959887.8U CN202321959887U CN220248965U CN 220248965 U CN220248965 U CN 220248965U CN 202321959887 U CN202321959887 U CN 202321959887U CN 220248965 U CN220248965 U CN 220248965U
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing surface
- clack
- throttle
- valve body
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000011010 flushing procedure Methods 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses an emptying valve convenient for flushing a sealing surface, and relates to the technical field of valves, which comprises a valve body, wherein the valve body is provided with an inlet cavity and an outlet cavity, the upper end of the valve body is provided with a valve cover, the valve cover is provided with a valve rod, the upper end of the valve rod is connected with a hand wheel, the lower end of the valve rod penetrates through the valve cover to extend into the valve body, the lower end of the valve rod is provided with a valve clack, the valve body is internally provided with a valve seat, the valve clack and the upper end of the valve seat form a first sealing surface, the lower end of the valve clack is provided with a throttle valve, the throttle valve and the lower end of the valve seat form a second sealing surface, a water inlet channel is arranged in the valve clack and the throttle valve, and when the valve is opened, the pressure of the valve cavity between the valve cover and the valve body can flush a medium through the water inlet channel to the first sealing surface and the second sealing surface. The utility model can effectively clean dirt and impurities on the surface of the sealing surface, thereby protecting the sealing surface and prolonging the service life of the valve.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a vent valve convenient for flushing a sealing surface.
Background
The throttle cut-off emptying valve is a valve widely used as a closed-circuit device on pipelines of petroleum, natural gas, coal gas, liquefied petroleum gas, oil refining, airports, chemical industry, oil gas storage and transportation, etc. The existing throttling cut-off emptying valve generally comprises a valve body, wherein an inlet cavity and an outlet cavity are formed in the valve body, a valve rod and a valve seat are arranged in the valve body, a valve clack is arranged at the lower end of the valve rod, the valve clack and the valve seat form sealing fit, the upper surface of the valve seat is normally chamfered to form a conical surface, when the valve is closed after medium in a pipeline is discharged, the medium enters the communication port from the chamfer of the valve seat, the oblique angle changes the direction of the medium flow to generate vortex, so that the sealing pair is damaged by direct scouring of the medium to the valve seat seal, the radial force of the medium on the end face of the valve seat is increased by the vortex, the unsealing of the valve seat is realized, but the purging force is smaller, the valve seat is used for a long time in the occasion with more impurities and gravel in part of the medium, and dirt and impurities possibly remain in the sealing position, so that the sealing is influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a vent valve which is convenient for flushing a sealing surface.
The technical scheme provided by the utility model is as follows:
the utility model provides a relief valve convenient to wash sealed face, includes the valve body, the valve body is equipped with inlet chamber and export chamber, the valve body upper end is equipped with the valve gap, be equipped with the valve rod on the valve gap, the hand wheel is connected to the valve rod upper end, and the lower extreme passes in the valve gap extends to the valve body, the valve rod lower extreme is equipped with the valve clack, be equipped with the disk seat in the valve body, the valve clack constitutes first sealed face with the disk seat upper end, the valve clack lower extreme is equipped with the throttle flap, the throttle flap constitutes the second sealed face with the disk seat lower extreme, be equipped with water inlet channel in valve clack and the throttle flap, when the valve is opened, valve pocket pressure between valve gap and the valve body can wash first sealed face and the second sealed face with the medium through water inlet channel.
The water inlet channel comprises a water inlet hole and a water outlet hole, the water inlet hole is arranged at the upper end of the valve clack, and the water outlet hole is arranged at the side part of the throttle valve and above the second sealing surface.
The throttle valve is detachably connected with the valve clack through a screw, and a gasket is arranged between the throttle valve and the valve clack.
The throttle flap is of a conical structure.
The upper end of the valve seat is conical, and the valve clack and the valve seat form conical sealing.
A throttling sleeve is arranged between the valve clack and the valve body, and 0-shaped rings are arranged between the throttling sleeve and the valve body and between the valve clack and the throttling sleeve.
A filler is arranged between the valve rod and the valve cover, a spacer ring is arranged in the middle of the filler, and the valve cover is provided with an grease injection valve communicated with the spacer ring.
The utility model has the beneficial effects that: according to the utility model, the water inlet channels are arranged in the valve clack and the throttling valve, when the valve is opened, the valve cavity pressure between the valve cover and the valve body can flush the first sealing surface and the second sealing surface through the water inlet channels, and dirt and impurities on the surfaces of the sealing surfaces can be effectively cleaned by flushing, so that the sealing surfaces are protected, and the service life of the valve is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;
fig. 2 is a partial enlarged view of fig. 1.
Description of the embodiments
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
1-2, a kind of relief valve convenient to wash the sealed surface, including the valve body 1, the valve body 1 has inlet chamber 51 and outlet chamber 52, the upper end of the valve body 1 has valve caps 16, there are valve stems 19 on the valve caps 16, the upper end of the valve stem 19 connects the hand wheel 22, the lower end of the valve stem 19 extends into the valve body 1 through the valve caps 16, there are valve flaps 5 in the lower end of the valve stem 19, there are split rings 6 between valve flaps 5 and valve stem 19, the valve flaps 5 are fixed through the valve flap covers 7, there are valve seats 23 in the valve body 1, the valve flaps 5 and upper end of the valve seats 23 form the first sealed surface 41, the lower end of the valve flaps 5 has throttle flaps 24, the throttle flaps 24 and lower end of the valve seats 23 form the second sealed surface 42, rotate the hand wheel 22 clockwise to drive the valve stem 19 to rotate clockwise, thus make the valve flaps 5 and throttle flaps 24 move upwards and disengage from the valve seats 23, open the passage through which can be passed by the medium, the valve is opened; conversely, rotating the hand wheel 22 anticlockwise drives the valve rod 19 to anticlockwise rotate, so that the valve clack 5 and the throttle valve 24 move downwards to be attached to the valve seat 23 to form sealing fit, a channel through which a medium can pass is closed, and the valve is closed.
In this embodiment, the valve clack 5 and the throttle valve 24 are internally provided with the water inlet channel 31, the water inlet channel 31 includes the water inlet hole 32 and the water outlet hole 33, the water inlet hole 32 is arranged at the upper end of the valve clack 5, the water outlet hole 33 is arranged at the side part of the throttle valve 24 and above the second sealing surface 42, when the valve is opened, the medium in the valve cavity between the valve cover and the valve body is extruded to spray from the water outlet hole 33 through the water inlet channel to flush the second sealing surface 42, and as the valve clack 5 and the throttle valve 24 gradually rise, the first sealing surface is flushed, the process of opening the valve is the process of flushing the sealing surface, and dirt and impurities on the surface of the sealing surface can be effectively cleaned, so that the sealing surface is protected, and the service life of the valve is prolonged.
Further, the throttle valve 24 is detachably connected with the valve clack 5 through the screw 26, the gasket 28 is arranged between the throttle valve 24 and the valve clack 5, and the split structure is convenient to maintain and replace and is also beneficial to processing of the water inlet channel 31.
In this embodiment, the throttle flap 24 is in a conical structure, the upper end of the valve seat 5 is conical, the valve flap 5 and the valve seat 23 form a conical seal, and the conical structure can prevent the high-pressure medium from directly flushing the sealing surface, so that the sealing surface is not easy to wear, and the service life is prolonged.
In this embodiment, a throttling sleeve 29 is arranged between the valve clack 5 and the valve body 1, 0-shaped rings 30 are arranged between the throttling sleeve 29 and the valve body 1 and between the valve clack 5 and the throttling sleeve 29, tightness is ensured, a filler 9 is arranged between the valve rod 19 and the valve cover 16, a spacer ring 10 is arranged in the middle of the filler 9, and the valve cover 16 is provided with a grease injection valve 8 communicated with the spacer ring 10.
The examples should not be construed as limiting the utility model, and any non-inventive modifications based on the spirit of the utility model should be regarded as being within the scope of the utility model.
Claims (7)
1. The utility model provides a relief valve convenient to wash sealed face, includes the valve body, the valve body is equipped with inlet chamber and export chamber, the valve body upper end is equipped with the valve gap, be equipped with the valve rod on the valve gap, the hand wheel is connected to the valve rod upper end, and the lower extreme passes in the valve gap extends to the valve body, the valve rod lower extreme is equipped with the valve clack, be equipped with the disk seat in the valve body, valve clack and disk seat upper end constitute first sealed face, its characterized in that: the valve is characterized in that a throttle valve is arranged at the lower end of the valve clack, a second sealing surface is formed by the throttle valve and the lower end of the valve seat, water inlet channels are formed in the valve clack and the throttle valve, and when the valve is opened, valve cavity pressure between the valve cover and the valve body can flush media on the first sealing surface and the second sealing surface through the water inlet channels.
2. A vent valve for facilitating flushing of a sealing surface as defined in claim 1, wherein: the water inlet channel comprises a water inlet hole and a water outlet hole, the water inlet hole is arranged at the upper end of the valve clack, and the water outlet hole is arranged at the side part of the throttle valve and above the second sealing surface.
3. A vent valve for facilitating flushing of a sealing surface as defined in claim 1, wherein: the throttle valve is detachably connected with the valve clack through a screw, and a gasket is arranged between the throttle valve and the valve clack.
4. A vent valve for facilitating flushing of a sealing surface as claimed in claim 1 or 3, wherein: the throttle flap is of a conical structure.
5. A vent valve for facilitating flushing of a sealing surface as defined in claim 1, wherein: the upper end of the valve seat is conical, and the valve clack and the valve seat form conical sealing.
6. A vent valve for facilitating flushing of a sealing surface as defined in claim 1, wherein: a throttling sleeve is arranged between the valve clack and the valve body, and 0-shaped rings are arranged between the throttling sleeve and the valve body and between the valve clack and the throttling sleeve.
7. A vent valve for facilitating flushing of a sealing surface as defined in claim 1, wherein: a filler is arranged between the valve rod and the valve cover, a spacer ring is arranged in the middle of the filler, and the valve cover is provided with an grease injection valve communicated with the spacer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321959887.8U CN220248965U (en) | 2023-07-25 | 2023-07-25 | Relief valve convenient to wash sealed face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321959887.8U CN220248965U (en) | 2023-07-25 | 2023-07-25 | Relief valve convenient to wash sealed face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248965U true CN220248965U (en) | 2023-12-26 |
Family
ID=89263710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321959887.8U Active CN220248965U (en) | 2023-07-25 | 2023-07-25 | Relief valve convenient to wash sealed face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119146224A (en) * | 2024-11-19 | 2024-12-17 | 四川中油乐仪能源装备制造股份有限公司 | Air release valve with throttling and stopping functions |
-
2023
- 2023-07-25 CN CN202321959887.8U patent/CN220248965U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119146224A (en) * | 2024-11-19 | 2024-12-17 | 四川中油乐仪能源装备制造股份有限公司 | Air release valve with throttling and stopping functions |
| CN119146224B (en) * | 2024-11-19 | 2025-03-11 | 四川中油乐仪能源装备制造股份有限公司 | Vent valve with throttling and shut-off function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |