CN216742913U - Stop valve convenient to open and close - Google Patents
Stop valve convenient to open and close Download PDFInfo
- Publication number
- CN216742913U CN216742913U CN202220327638.6U CN202220327638U CN216742913U CN 216742913 U CN216742913 U CN 216742913U CN 202220327638 U CN202220327638 U CN 202220327638U CN 216742913 U CN216742913 U CN 216742913U
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- Prior art keywords
- valve
- sealing
- ring
- open
- limiting ring
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- 238000007789 sealing Methods 0.000 claims abstract description 75
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims 2
- 241001330002 Bambuseae Species 0.000 claims 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 2
- 239000011425 bamboo Substances 0.000 claims 2
- 239000012530 fluid Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a stop valve convenient to open and close, which comprises a valve body, an inlet channel, an outlet channel, a valve seat, a valve cover and a valve rod, wherein the lower end of the valve rod is provided with a valve clack assembly in sealing fit with the valve seat, the valve clack assembly comprises a sealing disc and a sealing ring, the center of the sealing disc is fixedly connected with the lower end of the valve rod, the eccentric position of the sealing disc is provided with a pressure relief hole, the inner hole of the sealing ring is in sliding fit with the excircle of the sealing disc, the upper end and the lower end of the inner hole of the sealing ring are respectively provided with a first limiting ring and a second limiting ring, the pressure relief hole is in sealing fit with the upper end face of the second limiting ring, the valve rod is fixedly provided with a spring support, and a reset spring is arranged between the spring support and the first limiting ring. When the valve is opened and closed, the pressure relief hole on the sealing disc is opened, fluid on the upper side and the lower side of the sealing disc can be conducted, the pressure difference is reduced, the operating force required when the valve is opened and closed is effectively reduced, and the opening and closing speed of the valve is improved.
Description
Technical Field
The utility model relates to a stop valve, in particular to a stop valve convenient to open and close.
Background
The stop valve is also called stop valve, belonging to forced sealing valve, so when the valve is closed, it must apply pressure to the valve clack to force the sealing surface not to leak, when the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operation force is the friction force of the valve stem and the packing material and the thrust force produced by the pressure of the medium. Stop valve on the existing market is when opening and close, and the pressure differential that both sides received about the case is great, and if the stop valve is when closing, the case can receive the ascending effort of cavity fluid down, need drive the case with great operating force and push down, just can make the valve reach and close completely to provide the required sealing force of case. Similarly, if the valve spool is subjected to the downward force of the upper chamber fluid when the shut-off valve is opened, a large valve stem pull force is required to lift the valve spool to open the valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems in the prior art, and provides the stop valve which is convenient to open and close, so that the required operating force during opening and closing of the valve can be reduced, and the opening and closing speed of the valve can be increased.
The utility model adopts the technical scheme for solving the technical problems that: a stop valve convenient to open and close comprises a valve body, wherein an inlet channel and an outlet channel are respectively arranged at two ends of the valve body, a valve seat is arranged in the valve body between the inlet channel and the outlet channel, a valve cover is arranged at the top of the valve body, a liftable valve rod is mounted on the valve cover, a valve clack assembly in sealing fit with the valve seat is arranged at the lower end of the valve rod, the valve clack assembly comprises a sealing disc and a sealing ring, the center of the sealing disc is fixedly connected with the lower end of the valve rod, a pressure relief hole is formed in the eccentric position of the sealing disc, an inner hole of the sealing ring is in sliding fit with the excircle of the sealing disc, a first limiting ring and a second limiting ring are respectively arranged at the upper end and the lower end of the inner hole of the sealing ring, the inner hole diameter of the first limiting ring is smaller than that of the second limiting ring, the distance between the lower end face of the first limiting ring and the upper end face of the second limiting ring is larger than the thickness of the sealing disc, and the pressure relief hole is in sealing fit with the upper end face of the second limiting ring, a spring support is fixedly arranged on the valve rod, and a reset spring is arranged between the spring support and the first limiting ring.
For further improvement, the return spring is a conical helical compression spring.
Further perfection, the inner hole of the second limiting ring is in a taper hole structure with a large upper part and a small lower part.
Further perfection, the lower extreme of sealing ring is equipped with the convex cylinder, and the excircle of convex cylinder is pegged graft with the hole of disk seat and is cooperated.
Further perfection, the spring support and the valve rod are in threaded connection.
Further perfect, the spacing ring up end is fixed and is equipped with elastic seal circle, and elastic seal circle's upper surface is equipped with the stopper post, and the stopper post is sealed with pressure release hole interference fit.
The utility model has the beneficial effects that: after the valve is opened or before the valve is closed, the pressure relief hole on the sealing disc is opened, so that fluid on the upper side and the lower side of the sealing disc can be conducted, the pressure difference is reduced, the required operating force during opening and closing of the valve is effectively reduced, and the opening and closing speed of the valve is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of the structure of FIG. 1;
description of reference numerals: 1. the valve comprises a valve body, 11, an inlet channel, 12, an outlet channel, 13, a valve seat, 14, a valve cover, 15, a valve rod, 16, a spring support, 2, a valve clack component, 21, a sealing disc, 22, a sealing ring, 23, a pressure relief hole, 24, a first limiting ring, 25, a second limiting ring, 26, a return spring, 27, a convex barrel, 28, an elastic sealing ring, 29 and a plug column.
Detailed Description
The utility model will be further described with reference to the accompanying drawings in which:
referring to figures 1-2: the stop valve convenient to open and close in the embodiment comprises a valve body 1, wherein an inlet channel 11 and an outlet channel 12 are respectively arranged at two ends of the valve body 1, a valve seat 13 is arranged in the valve body 1 between the inlet channel 11 and the outlet channel 12, a valve cover 14 is arranged at the top of the valve body 1, a liftable valve rod 15 is installed on the valve cover 14, the valve rod 15 is in threaded sealing connection with the valve cover 14, or is driven by an external actuator to open and close after being in sliding sealing connection with the valve cover 14, a valve clack assembly 2 in sealing fit with the valve seat 13 is arranged at the lower end of the valve rod 15, the valve clack assembly 2 comprises a sealing disc 21 and a sealing ring 22, the center of the sealing disc 21 is fixedly connected with the lower end of the valve rod 15, a pressure relief hole 23 is formed in the eccentric position of the sealing disc 21, the inner hole of the sealing ring 22 is in sliding fit with the excircle of the sealing disc 21, and a first limit ring 24 and a second limit ring 25 are respectively arranged at the upper end and the lower end of the inner hole of the sealing ring 22, the inner hole diameter of first spacing ring 24 is less than the inner hole diameter of second spacing ring 25, the distance between the lower terminal surface of first spacing ring 24 and the up end of second spacing ring 25 is greater than the thickness of sealed dish 21, pressure release hole 23 and the sealed cooperation of second spacing ring 25 up end, the fixed spring support 16 that is provided with on the valve rod 15 is equipped with reset spring 26 between spring support 16 and the first spacing ring 24. The return spring 26 is a conical helical compression spring.
The working principle is as follows: fluid flows into the valve body 1 through the inlet channel 11, the valve rod 15 can drive the valve clack component 2 to press downwards when screwed down, under the elastic force action of the reset spring 26, an inner hole of the second limit ring 25 is communicated with the pressure relief hole 23 on the sealing disc 21, the fluid in the lower cavity can flow onto the sealing disc 21 through the pressure relief hole 23, the resistance of the valve clack component 2 to move downwards is reduced, after the sealing ring 22 is contacted with the sealing surface on the valve seat 13, the valve rod 15 is screwed down continuously, the second limit ring 25 and the sealing disc 21 are pressed, the pressure relief hole 23 is closed, the valve is closed, water flow is cut off, at the moment, the reset spring 26 is compressed, elastic force can be provided for the sealing ring 22, and the sealing performance of the valve can be enhanced; when the valve rod 15 is screwed up, the sealing disc 21 firstly moves upwards to conduct the inner holes of the pressure relief hole 23 and the second limiting ring 25, the fluid in the lower cavity can be relieved through the pressure relief hole 23, then the sealing disc 21 is contacted with the first limiting ring 24 to drive the sealing ring 22 to leave the valve seat 13, the valve is completely opened, the fluid pressure between the sealing surface of the sealing ring 22 and the valve seat 13 is reduced at the moment, and the erosion effect on the sealing surface can be reduced. At this time, the return spring 26 extends to keep the inner hole of the second limit ring 25 in communication with the pressure relief hole 23 on the sealing disk 21. The return spring 26 also has a damping effect.
The shape of the inner hole of the second limit ring 25 is a taper hole structure with a big top and a small bottom, so that the flow guide effect is realized, and the second limit ring 25 and the sealing disc 21 can be conveniently opened.
The lower end of the sealing ring 22 is provided with a small section of convex cylinder 27, the excircle of the convex cylinder 27 is in inserted fit with the inner hole of the valve seat 13, the sealing performance can be enhanced, and the abrasion of fluid to the sealing surface at the lower side of the sealing ring 22 is reduced.
The spring support 16 is in threaded connection with the valve rod 15, and the spring support 16 can be rotatably adjusted to a position on the valve rod 15 to adjust the pre-tightening force of the return spring 26.
The fixed elastic sealing ring 28 that is equipped with of spacing ring up end can avoid producing the clearance between second spacing ring 25 and the sealed dish 21 when the valve is closed, and the upper surface of elastic sealing ring 28 is equipped with the cock stem 29, and cock stem 29 is sealed with pressure release hole 23 interference fit, can further strengthen the sealing performance of valve, prevents to leak in taking place.
While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the appended claims.
Claims (6)
1. The utility model provides a stop valve convenient to open and close, including valve body (1), the both ends of valve body (1) are equipped with inlet channel (11) and exit channel (12) respectively, the inside of valve body (1) is equipped with disk seat (13) between inlet channel (11) and exit channel (12), the top of valve body (1) is equipped with valve gap (14), install valve rod (15) of liftable on valve gap (14), the lower extreme of valve rod (15) is equipped with and seals complex valve clack subassembly (2) with disk seat (13), its characterized in that: the valve flap component (2) comprises a sealing disc (21) and a sealing ring (22), the center of the sealing disc (21) is fixedly connected with the lower end of the valve rod (15), a pressure relief hole (23) is arranged at the eccentric position of the sealing disc (21), the inner hole of the sealing ring (22) is in sliding fit with the excircle of the sealing disc (21), the upper end and the lower end of the inner hole of the sealing ring (22) are respectively provided with a first limiting ring (24) and a second limiting ring (25), the inner hole diameter of the first limit ring (24) is smaller than that of the second limit ring (25), the distance between the lower end surface of the first limit ring (24) and the upper end surface of the second limit ring (25) is larger than the thickness of the sealing disc (21), the pressure relief hole (23) is in sealing fit with the upper end face of the second limiting ring (25), a spring support (16) is fixedly arranged on the valve rod (15), and a return spring (26) is arranged between the spring support (16) and the first limiting ring (24).
2. A stop valve convenient to open and close according to claim 1, characterized in that: the return spring (26) is a conical helical compression spring.
3. A stop valve convenient to open and close according to claim 1, characterized in that: the shape of the inner hole of the second limiting ring (25) is a taper hole structure with a big top and a small bottom.
4. A stop valve convenient to open and close according to claim 1, characterized in that: the lower extreme of sealing ring (22) is equipped with protruding section of thick bamboo (27), and the excircle of protruding section of thick bamboo (27) is pegged graft with the hole of disk seat (13) and is cooperated.
5. A stop valve convenient to open and close according to claim 1, characterized in that: the spring support (16) is in threaded connection with the valve rod (15).
6. A stop valve convenient to open and close according to claim 1, characterized in that: an elastic sealing ring (28) is fixedly arranged on the upper end face of the limiting ring, a plug (29) is arranged on the upper surface of the elastic sealing ring (28), and the plug (29) is in interference fit with the pressure relief hole (23) for sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220327638.6U CN216742913U (en) | 2022-02-17 | 2022-02-17 | Stop valve convenient to open and close |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220327638.6U CN216742913U (en) | 2022-02-17 | 2022-02-17 | Stop valve convenient to open and close |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742913U true CN216742913U (en) | 2022-06-14 |
Family
ID=81919082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220327638.6U Active CN216742913U (en) | 2022-02-17 | 2022-02-17 | Stop valve convenient to open and close |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216742913U (en) |
-
2022
- 2022-02-17 CN CN202220327638.6U patent/CN216742913U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325000 No. 538, Hongrui Road, industrial park, Shacheng street, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Huadu Valve Group Co.,Ltd. Address before: 325000 No. 538, Hongrui Road, industrial park, Shacheng street, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee before: Wenzhou Huadu Valve Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |