CN220452905U - Novel valve rod sealing and thrust structure of hidden rod gate valve - Google Patents
Novel valve rod sealing and thrust structure of hidden rod gate valve Download PDFInfo
- Publication number
- CN220452905U CN220452905U CN202321381352.7U CN202321381352U CN220452905U CN 220452905 U CN220452905 U CN 220452905U CN 202321381352 U CN202321381352 U CN 202321381352U CN 220452905 U CN220452905 U CN 220452905U
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- 238000007789 sealing Methods 0.000 title claims abstract description 57
- 238000009987 spinning Methods 0.000 claims abstract description 42
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 238000003825 pressing Methods 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 210000004907 gland Anatomy 0.000 description 18
- 239000000428 dust Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
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Abstract
The utility model discloses a novel valve rod sealing and thrust structure of a hidden rod gate valve, which comprises a valve cover, a thrust ring seat and a spinning piece, wherein the thrust ring seat is fixedly arranged at the top of the valve cover, the thrust ring seat is integrally connected with the valve cover, a spinning cavity groove is formed in the top of the thrust ring seat, a cavity internal thread is formed in the inner cavity wall of the spinning cavity groove, the spinning piece consists of a pressure plate part and a spinning part integrally connected to the bottom of the pressure plate part, the spinning part is screwed into the spinning cavity groove through the cavity internal thread, a through hole penetrating up and down is formed in the spinning piece, a valve rod is inserted into the through hole, a compensation cavity is formed in the wall of the through hole, a self-compensation sealing ring is placed in the compensation cavity, and the self-compensation sealing ring is sleeved on the valve rod. The beneficial effects are that: the self-compensating valve cover sealing device has the advantages of small relative volume, light weight, low cost, long service life, strong self-compensating sealing capability and capability of preventing the valve cover sealing ring from being subjected to pressure displacement to cause leakage risk by screw thread sealing.
Description
Technical Field
The utility model belongs to the field of accessory devices of concealed lever gate valves, and particularly relates to a valve rod sealing and thrust structure of a novel concealed lever gate valve.
Background
The common valve is mainly used for being installed in a pipeline and being responsible for on-off of the pipeline, when the hidden rod gate valve is used and assembled, the hidden rod gate valve has higher requirements on horizontal positioning, force transmission, sealing structures when the valve rod is used for transmitting force, the traditional hidden rod gate valve is provided with a gland, a dust cover and other structures, the gland is fixedly connected with the valve cover through gland fixing bolts, a round hole which is matched with the diameter of the valve rod is formed in the valve cover, a plurality of annular groove-mounted valve rod sealing rings are formed in the valve rod, when the valve rod rotates, the elasticity of the sealing rings is responsible for dynamic and static sealing liquid capacity of the valve rod, but the valve cover is tightly locked with the gland through bolts, the middle is sealed by the gland sealing rings, the gland sealing rings have the risk of pushing out pressure bearing of an inner ring, and in the structure, the sealing rings are also fastened, so the depth of the upper groove of the valve cover, the thickness of the sealing rings and reasonable assembly gaps of the gland sealing rings are uniformly increased, the size control requirements of the rotating parts are met, due to the arrangement of the sealing rings, the tightness degree can be directly reflected in rotation resistance, the service life of the sealing rings can be shortened, the existence of the valve rod is worn and the sealing rings can be caused, and the material cost is high.
Disclosure of Invention
The utility model aims to solve the problems and provide a novel valve rod sealing and thrust structure of a hidden rod gate valve.
The utility model realizes the above purpose through the following technical scheme:
the utility model provides a novel valve rod seal and thrust structure of hidden rod gate valve, includes valve gap, thrust ring seat and spinning piece, the top fixed mounting of valve gap has the thrust ring seat, the thrust ring seat with valve gap body coupling is in the same place, the spinning chamber groove has been seted up at the top of thrust ring seat, the intracavity thread has been seted up on the inboard chamber wall in spinning chamber groove, the spinning piece comprises pressure disk portion and the spin portion of body coupling in pressure disk portion bottom, spin portion connects to through the intracavity thread spin in the spinning chamber inslot, be equipped with the through-hole that link up from top to bottom on the spinning piece, the through-hole interpolation is equipped with the valve rod, the compensation chamber has been seted up on the pore wall of through-hole, the self-compensating sealing washer has been placed in the compensation chamber, the self-compensating sealing washer snare is established on the valve rod, the thrust ring has been placed to the bottom in spinning chamber groove, the bottom of spin portion presses and establishes to on the thrust ring.
Further, the self-compensating sealing ring consists of a ring cone part and a ring lug part integrally connected to the top end of the ring cone part.
Further, the top point of the valve rod extends to the upper side of the spinning piece and is fixedly provided with a valve rotating handle, the bottom of the spinning cavity groove is provided with a valve cover hole, and the valve rod extends to the inner part of the valve cover through the valve cover hole.
Further, the bottom of the valve cover is fixedly provided with a valve main body through bolts.
The beneficial effects are that: the novel valve rod sealing and thrust structure of the blind rod gate valve utilizes the seal structure of the gland and the multi-groove valve rod, which are replaced by the self-sealing structures arranged in the spinning part and the spinning part, and has the advantages of small relative volume, light weight, low cost, strong self-compensating sealing capability, prolonged sealing life of the valve rod, threaded sealing and avoidance of leakage risk caused by the pressurized displacement of the valve cover sealing ring.
Drawings
FIG. 1 is a schematic cross-sectional view of a valve stem sealing and thrust structure of a novel blind rod gate valve according to the present utility model;
FIG. 2 is a schematic view of a thrust collar seat of a valve stem seal and thrust structure of a novel blind rod gate valve according to the present utility model;
FIG. 3 is an interior view of a spinning piece of a valve stem sealing and thrust structure of a novel blind rod gate valve according to the present utility model;
fig. 4 is a schematic diagram of a conventional blind rod gate valve.
The reference numerals are explained as follows:
1. a valve cover; 2. a thrust collar seat; 3. a spinning member; 4. a valve stem; 5. self-compensating sealing rings; 6. an internal cavity thread; 7. a thrust collar; 8. a compensation chamber; 9. a valve rotating handle; 10. a valve body; 11. spinning the cavity groove; 12. an annular ear; 13. a ring cone; 14. a through hole; 15. a gland; 16. a valve stem seal ring; 17. a dust cover; 18. pressing cover fixing bolts; 19. a platen section; 20. and a screwing part.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
the utility model provides a valve rod sealing and thrust structure of a novel hidden rod gate valve, which consists of a valve cover 1, a thrust ring seat 2 and a spinning piece 3;
referring to fig. 1-3, a thrust ring seat 2 is fixedly arranged at the top of a valve cover 1, the thrust ring seat 2 and the valve cover 1 are integrally connected together, a spinning cavity groove 11 is formed at the top of the thrust ring seat 2, and a cavity internal thread 6 is formed on the inner side cavity wall of the spinning cavity groove 11;
the spinning part 3 consists of a pressure plate part 19 and a spinning part 20 integrally connected to the bottom of the pressure plate part 19, the spinning part 20 is screwed into a spinning cavity groove 11 through a cavity internal thread 6, a through hole 14 which is vertically communicated is arranged on the spinning part 3, a valve rod 4 is inserted into the through hole 14, a compensation cavity 8 is arranged on the wall of the through hole 14, a self-compensation sealing ring 5 is placed in the compensation cavity 8, and the self-compensation sealing ring 5 is sleeved on the valve rod 4;
the bottom of the spinning cavity groove 11 is provided with a thrust ring 7, and the bottom end of the spinning connection part 20 is pressed on the thrust ring 7.
In this embodiment, the self-compensating seal ring 5 is composed of a ring cone portion 13 and a ring lug portion 12 integrally connected to the tip end of the ring cone portion 13.
In this embodiment, the top of the valve rod 4 extends above the spinning member 3 and is fixedly provided with a valve rotating handle 9, the bottom of the spinning cavity groove 11 is provided with a valve cover hole, and the valve rod 4 extends into the valve cover 1 through the valve cover hole.
In the present embodiment, the valve cover 1 is fixedly mounted with a valve body 10 at the bottom thereof by bolts.
In the manufacturing and mounting process of the structure, a thrust ring seat 2 is opened at the top end of the valve cover 1, a cavity internal thread 6 is generated, an external thread hollow lock nut, namely a spinning piece 3 is manufactured, a spinning cavity groove is turned, a self-compensating seal ring 5, namely a self-compensating seal ring, which is worn and self-compensating and is covered in an external pressure bearing manner, is manufactured, the interface of the self-compensating seal ring is V-shaped, the thrust ring is clamped into a valve rod and is arranged at the bottom of the spinning cavity groove, sealing materials such as raw material tape or anaerobic coating are additionally arranged during spinning and assembling, and the thrust ring is screwed and positioned, so that the assembly of the valve cover part of the valve is completed.
Referring to fig. 4, a conventional hidden rod gate valve is provided with a gland 15, a dust cover 17 and other structures, the gland 15 and a valve cover are connected and fixed through a gland fixing bolt 18, a round hole matching the diameter of a valve rod is formed in the valve cover, a plurality of ring-shaped groove-mounted valve rod sealing rings 16 are formed in the valve rod, when the valve rod rotates, the elasticity of the sealing rings is responsible for the dynamic and static sealing liquid capacity of the valve rod, but the valve cover and the gland are locked through the bolts, the middle part of the valve cover is sealed by a gland sealing ring colloid O-shaped ring, the gland sealing ring has the risk of pushing out the bearing pressure of an inner ring, in the structure, the split ring also has to be fastened, so the depth of a groove at the upper part of the valve cover, the thickness of the split ring and the reasonable assembly gap of the gland sealing ring are unified, the dimensional control requirement of the matched part is increased, the tightness degree of tightness can be directly reflected in the rotation resistance feeling, the service life of the rubber ring can be shortened due to the overtightening degree, the existence of the valve rod and the gland is high in material cost;
in the embodiment, the self-sealing structure is built in by the spinning part and the spinning part, and the sealing structure of the substituted gland and the multi-groove valve rod has the advantages of small relative volume, light weight, low cost, strong self-compensating sealing capability, prolonged sealing life of the valve rod, threaded sealing and avoidance of leakage risk caused by the pressurized displacement of the valve cover sealing ring.
It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.
Claims (4)
1. Novel valve rod sealing and thrust structure of blind rod gate valve, its characterized in that: the rotary pressing device comprises a valve cover, a thrust ring seat and a rotary pressing piece, wherein the thrust ring seat is fixedly arranged at the top of the valve cover, the thrust ring seat is integrally connected with the valve cover, a rotary pressing cavity groove is formed in the top of the thrust ring seat, a cavity internal thread is formed in the inner cavity wall of the rotary pressing cavity groove, the rotary pressing piece is formed by a pressure plate part and a rotary joint part integrally connected with the bottom of the pressure plate part, the rotary joint part is rotatably connected into the rotary pressing cavity groove through the cavity internal thread, a through hole penetrating up and down is formed in the rotary pressing piece, a valve rod is inserted in the through hole, a compensation cavity is formed in the wall of the through hole, a self-compensating sealing ring is placed in the compensation cavity, the self-compensating sealing ring is sleeved on the valve rod, the thrust ring is placed at the bottom of the rotary pressing cavity groove, and the bottom end of the rotary joint part is pressed on the thrust ring.
2. The novel valve rod sealing and thrust structure of a blind rod gate valve according to claim 1, wherein: the self-compensating sealing ring consists of a ring cone part and a ring lug part integrally connected to the top end of the ring cone part.
3. The novel valve rod sealing and thrust structure of a blind rod gate valve according to claim 1, wherein: the top point of the valve rod extends to the upper part of the spinning piece and is fixedly provided with a valve rotating handle, the bottom of the spinning cavity groove is provided with a valve cover hole, and the valve rod extends to the inner part of the valve cover through the valve cover hole.
4. The novel valve rod sealing and thrust structure of a blind rod gate valve according to claim 1, wherein: the bottom of the valve cover is fixedly provided with a valve main body through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321381352.7U CN220452905U (en) | 2023-06-01 | 2023-06-01 | Novel valve rod sealing and thrust structure of hidden rod gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321381352.7U CN220452905U (en) | 2023-06-01 | 2023-06-01 | Novel valve rod sealing and thrust structure of hidden rod gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220452905U true CN220452905U (en) | 2024-02-06 |
Family
ID=89739902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321381352.7U Active CN220452905U (en) | 2023-06-01 | 2023-06-01 | Novel valve rod sealing and thrust structure of hidden rod gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220452905U (en) |
-
2023
- 2023-06-01 CN CN202321381352.7U patent/CN220452905U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |