CN210440603U - High-strength sealing device of high-pressure gate valve - Google Patents
High-strength sealing device of high-pressure gate valve Download PDFInfo
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- CN210440603U CN210440603U CN201921350515.9U CN201921350515U CN210440603U CN 210440603 U CN210440603 U CN 210440603U CN 201921350515 U CN201921350515 U CN 201921350515U CN 210440603 U CN210440603 U CN 210440603U
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- flashboard
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- air bag
- gate valve
- sealing device
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Abstract
The utility model belongs to the technical field of high-pressure gate valves, in particular to a high-pressure gate valve high-strength sealing device, which comprises a valve seat and a valve cover arranged on the valve seat, wherein a flashboard is arranged inside the valve seat, the interior of the valve cover is in threaded connection with a valve rod, the bottom end of the valve rod is rotationally connected with the top end of the flashboard, the top end of the valve rod is provided with a hand wheel, an inner cavity is arranged inside the valve seat, a spacing box is fixedly arranged inside the inner cavity, the upper end and the lower end of the spacing box are provided with openings for the flashboard to pass through, the openings are vertically penetrated, an annular elastic air bag is arranged in the spacing box, the outer side wall of the elastic air bag is glued with the inner side wall of the spacing box, one side of the elastic air bag is connected with an inflation tube, the inflation tube, the sealing performance of the gate valve is improved, and the gate valve is beneficial to being used under high pressure.
Description
Technical Field
The utility model belongs to the technical field of the high-pressure gate valve, concretely relates to high-pressure gate valve sealing device that excels in.
Background
The gate valve is a valve which can control the inside liquid to be fully opened and fully closed through the flashboard, the movement direction of the flashboard is vertical to the fluid direction, the flashboard can be divided into a rigid gate valve and an elastic gate valve according to the difference of the flashboard, and the rigid gate valve and the elastic gate valve can be divided into a lifting rod gate valve and a rotary rod gate valve according to the difference of the opening and closing modes.
Traditional gate valve simple structure, the upper and lower end of flashboard can not stably be fixed under high pressure environment, and sealing performance is relatively poor, influences the result of use of gate valve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high pressure gate valve sealing device that excels in has overcome prior art not enough, sets up the position that elasticity gasbag and support groove stabilize the flashboard, improves the leakproofness of gate valve, helps the gate valve to use under the high pressure.
In order to solve the above problems, the utility model adopts the following technical proposal:
a high-strength sealing device of a high-pressure gate valve comprises a valve seat and a valve cover arranged on the valve seat, wherein a flashboard is arranged inside the valve seat, a valve rod is in threaded connection inside the valve cover, the bottom end of the valve rod is rotatably connected with the top end of the flashboard, a hand wheel is arranged at the top end of the valve rod, an inner cavity is arranged inside the valve seat, a limiting box is fixedly arranged inside the inner cavity, openings for the flashboard to pass through are formed in the upper end and the lower end of the limiting box, an annular elastic air bag is arranged in the limiting box and penetrates through the upper end and the lower end of the limiting box, the outer side wall of the elastic air bag is connected with the inner side wall of the limiting box in a gluing mode, an inflation tube is connected to; the lower part of flashboard is provided with curved support groove, support the groove and set up on the inside wall of disk seat, support the inslot and be provided with the flexure strip, the upper surface of flexure strip closely laminates with the lower terminal surface of flashboard.
Further, the up end of flashboard and the bottom inside wall of spacing case are located same horizontal plane, the up end of elasticity gasbag bottom and flashboard is closely laminated.
Further, the outer wall of the elastic air bag is a 3-5mm rubber layer, a sealed protective layer is arranged on the outer side of the elastic air bag, and the protective layer is a silica gel layer.
Further, one side of the inflation tube is provided with an air pressure detection meter, and a pipeline of the air pressure detection meter is communicated with the inflation tube.
Further, the elastic sheet comprises, but is not limited to, a high-elasticity rubber skin, and a waterproof layer is sprayed on the surface of the elastic sheet.
Compared with the prior art, the utility model, following beneficial effect has:
the utility model relates to a high-strength sealing device of a high-pressure gate valve, which is characterized in that through arranging a valve seat, a valve cover, a hand wheel, a valve rod, an inner cavity, a limit box, an opening, a flashboard, an elastic air bag, an inflation pipe, an inflation interface and an air pressure detection meter, the elastic air bag is inflated through the inflation interface, so that the elastic air bag expands towards the center of the limit box until the air pressure in the elastic air bag reaches a certain value, at the moment, the elastic air bag presses the top end of the flashboard, and simultaneously, the connection part of the flashboard and the limit box is blocked; through setting up support groove and flexure strip, support the groove and restrict the flashboard bottom and remove, the flexure strip closely laminates with the flashboard, improves the leakproofness.
The utility model discloses simple structure, the modern design, the practicality is strong, sets up the position that elasticity gasbag and support groove come firm flashboard, improves the leakproofness of gate valve, helps the gate valve to use under the high pressure.
Drawings
Fig. 1 is a schematic structural diagram of a high-strength sealing device of a high-pressure gate valve.
Fig. 2 is a schematic structural diagram of an elastic airbag in a high-strength sealing device of a high-pressure gate valve.
Fig. 3 is a schematic structural view of a support groove in a high-strength sealing device of a high-pressure gate valve.
In the figure: 1. a valve seat; 2. a valve cover; 3. a hand wheel; 4. a valve stem; 5. an inner cavity; 6. a limiting box; 7. an opening; 8. a shutter plate; 9. an elastic air bag; 10. an inflation tube; 11. an inflation interface; 12. an air pressure detection meter; 13. a support groove; 14. an elastic sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figures 1-3, the high-strength sealing device for the high-pressure gate valve of the present invention comprises a valve seat 1 and a valve cover 2 disposed on the valve seat 1, wherein a gate plate 8 is disposed inside the valve seat 1, a valve rod 4 is screwed inside the valve cover 2, the bottom end of the valve rod 4 is rotatably connected with the top end of the gate plate 8, a hand wheel 3 is disposed on the top end of the valve rod 4, an inner cavity 5 is disposed inside the valve seat 1, a spacing box 6 is fixedly disposed inside the inner cavity 5, openings 7 for the gate plate 8 to pass through are disposed at the upper and lower ends of the spacing box 6, an annular elastic airbag 9 is disposed inside the spacing box 6, the outer side wall of the elastic airbag 9 is glued to the inner side wall of the spacing box 6, one side of the elastic airbag 9 is connected with an inflation tube 10, the inflation tube 10 penetrates through the spacing box 6 and, the inflation interface 11 can be connected with a manual inflation device or an electric inflation device; an arc-shaped supporting groove 13 is formed below the gate plate 8, the supporting groove 13 is formed in the inner side wall of the valve seat 1, an elastic sheet 14 is arranged in the supporting groove 13, and the upper surface of the elastic sheet 14 is tightly attached to the lower end face of the gate plate 8.
The up end of flashboard 8 and the bottom inside wall of spacing case 6 are located same horizontal plane, and the up end of 9 bottoms of elasticity gasbag and flashboard 8 closely laminates, and the junction of flashboard 8 and spacing case 6 is stopped up to elasticity gasbag 9, strengthens flashboard 8's leakproofness, and elasticity gasbag 9 suppression flashboard 8 avoids flashboard 8 to rock simultaneously.
In order to improve the sealing performance of the elastic air bag 9, the outer wall of the elastic air bag 9 is a 3-5mm rubber layer, a sealing protective layer is arranged on the outer side of the elastic air bag 9, and the protective layer is a silica gel layer.
An air pressure detecting meter 12 is arranged on one side of the air charging pipe 10, and a pipeline of the air pressure detecting meter 12 is communicated with the air charging pipe 10 to detect the air pressure in the elastic air bag 9.
The elastic sheet 14 includes but is not limited to a high-elasticity rubber, a waterproof layer is sprayed on the surface of the elastic sheet 14, and the high-elasticity elastic sheet 14 is tightly attached to the gate plate 8, so that the sealing performance of the bottom end of the gate plate 8 is improved, and impurities in the fluid are prevented from being deposited inside the supporting groove 13.
To sum up, the high-strength sealing device of the high-pressure gate valve of the utility model, when in use, the hand wheel 3 is rotated to drive the valve rod 4 to drive the flashboard 8 to move downwards, the flashboard 8 passes through the opening 7 of the spacing box 6 until the flashboard 8 enters the supporting groove 13, the elastic sheet 14 is extruded, and the bottom end of the flashboard 8 reaches the bottom end of the supporting groove 13; then, the inflating device is connected with the inflating interface 11 to inflate the elastic air bag 9 until the air pressure in the elastic air bag 9 reaches a certain value, and then the inflating is stopped; at the moment, the bottom end of the elastic air bag 9 is positioned above the connection part of the opening 7 of the limiting box 6 and the flashboard 8, on one hand, the flashboard 8 is pressed by the elastic air bag 9, the flashboard 8 is prevented from shaking, on the other hand, the connection part is blocked, and the sealing performance of the gate valve is improved; when the gate valve needs to be opened, air in the elastic air bag 9 is discharged through the inflating connector 11, then the gate plate 8 is enabled to be in the above state by rotating the hand wheel 3, the elastic piece is restored to the initial state, and sand and impurities are prevented from being deposited in the supporting groove 13.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a high pressure gate valve sealing device that excels in, includes disk seat (1) and valve gap (2) of setting on disk seat (1), disk seat (1) inside is provided with flashboard (8), valve gap (2) internal thread is connected with valve rod (4), the bottom of valve rod (4) is rotated with the top of flashboard (8) and is connected, the top of valve rod (4) is provided with hand wheel (3), its characterized in that: an inner cavity (5) is arranged inside the valve seat (1), a limiting box (6) is fixedly arranged inside the inner cavity (5), openings (7) for the flashboards (8) to pass through are formed in the upper end and the lower end of the limiting box (6), the openings (7) penetrate through the upper portion and the lower portion, an annular elastic air bag (9) is arranged inside the limiting box (6), the outer side wall of the elastic air bag (9) is connected with the inner side wall of the limiting box (6) in a gluing mode, an inflation tube (10) is connected to one side of the elastic air bag (9), the inflation tube (10) penetrates through the limiting box (6) and the valve seat (1) and extends to the outside of the valve seat (1), and an inflation connector (11) is connected to the other end of the; the lower part of flashboard (8) is provided with curved support groove (13), support groove (13) and set up on the inside wall of disk seat (1), be provided with flexure strip (14) in support groove (13), the upper surface of flexure strip (14) closely laminates with the lower terminal surface of flashboard (8).
2. The high-strength sealing device of the high-pressure gate valve according to claim 1, wherein: the up end of flashboard (8) is located same horizontal plane with the bottom inside wall of spacing case (6), elasticity gasbag (9) bottom is closely laminated with the up end of flashboard (8).
3. The high-strength sealing device of the high-pressure gate valve according to claim 1, wherein: the outer wall of the elastic air bag (9) is a 3-5mm rubber layer, a sealed protective layer is arranged on the outer side of the elastic air bag (9), and the protective layer is a silica gel layer.
4. The high-strength sealing device of the high-pressure gate valve according to claim 1, wherein: an air pressure detection meter (12) is arranged on one side of the inflation tube (10), and a pipeline of the air pressure detection meter (12) is communicated with the inflation tube (10).
5. The high-strength sealing device of the high-pressure gate valve according to claim 1, wherein: the elastic sheet (14) comprises but is not limited to a high-elasticity rubber skin, and a waterproof layer is sprayed on the surface of the elastic sheet (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921350515.9U CN210440603U (en) | 2019-08-20 | 2019-08-20 | High-strength sealing device of high-pressure gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921350515.9U CN210440603U (en) | 2019-08-20 | 2019-08-20 | High-strength sealing device of high-pressure gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210440603U true CN210440603U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921350515.9U Active CN210440603U (en) | 2019-08-20 | 2019-08-20 | High-strength sealing device of high-pressure gate valve |
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| CN (1) | CN210440603U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116537742A (en) * | 2023-07-07 | 2023-08-04 | 东营市金亿来石油机械有限公司 | Leakage-proof wellhead gate valve for petroleum exploitation |
-
2019
- 2019-08-20 CN CN201921350515.9U patent/CN210440603U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116537742A (en) * | 2023-07-07 | 2023-08-04 | 东营市金亿来石油机械有限公司 | Leakage-proof wellhead gate valve for petroleum exploitation |
| CN116537742B (en) * | 2023-07-07 | 2023-09-22 | 东营市金亿来石油机械有限公司 | Leakage-proof wellhead gate valve for petroleum exploitation |
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