CN221097520U - Double-flashboard gate valve with inflatable sealing device - Google Patents
Double-flashboard gate valve with inflatable sealing device Download PDFInfo
- Publication number
- CN221097520U CN221097520U CN202323024289.4U CN202323024289U CN221097520U CN 221097520 U CN221097520 U CN 221097520U CN 202323024289 U CN202323024289 U CN 202323024289U CN 221097520 U CN221097520 U CN 221097520U
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- China
- Prior art keywords
- valve
- flashboard
- gasbag
- sealing
- inflatable sealing
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- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 239000000945 filler Substances 0.000 claims abstract description 4
- 238000005192 partition Methods 0.000 claims description 7
- 210000003437 trachea Anatomy 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 3
- 239000011261 inert gas Substances 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Sliding Valves (AREA)
Abstract
The utility model discloses a double-flashboard gate valve with an inflatable sealing device, which belongs to the technical field of gate valves and comprises a valve body, a flashboard, a valve seat, a valve rod and a valve cover, wherein the flashboard is in sealing fit with the valve seat, a middle cavity capable of accommodating the flashboard is arranged in the valve body, the valve cover is fixed on the upper end surface of the valve body through bolts, the lower end of the valve rod is connected with the flashboard, the upper end of the valve rod passes through the valve cover to be fixedly connected with a hand wheel, a sealing filler device is arranged between the valve rod and the valve cover, an accommodating groove is annularly arranged on the end surface of the flashboard, which is in sealing fit with the valve seat, an annular inflatable sealing device is sealed and fixed in the accommodating groove, when the valve is closed, the annular inflatable sealing device is inflated by injecting inert gas, so that an O-shaped sealing ring is tightly adhered to the sealing surface of the valve seat, and friction force of the gate valve is reduced when the valve is closed or opened, and abrasion of the sealing surface is effectively reduced, and opening moment is reduced.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a double-flashboard gate valve.
Background
The gate valve is attached to or separated from the valve seat to realize the opening and closing of the valve, wherein the double-gate valve is one of common valves in the petrochemical industry. In the use process of the double-gate valve in the prior art, the gate plate is easy to be worn due to friction and medium particles during opening and closing, the sealing performance of the valve is affected, the gate plate of the double-gate valve is generally of a wedge-shaped design with wide upper part and narrow lower part, the valve seat needs to be processed into an angle matched with the gate plate, and the valve seat can be matched with the sealing surface of the gate plate in a sealing way to form a sealing pair, so that the processing difficulty is increased.
Disclosure of Invention
The utility model aims to provide a double-flashboard gate valve with an inflatable sealing device, which can reduce opening and closing friction and improve sealing performance at the same time, so as to solve the problems in the prior art.
The technical scheme of the utility model is as follows:
The utility model provides a take two flashboard gate valves of inflatable sealing device, including valve body, flashboard, disk seat, valve rod, valve gap, the flashboard includes left flashboard and right flashboard, left and right flashboard respectively with the disk seat sealing fit of import and export runner, be equipped with the well chamber that can hold the flashboard in the valve body, the valve gap passes through the bolt fastening in valve body up end, the flashboard is connected to the valve rod lower extreme, the upper end passes valve gap and hand wheel fixed connection, be equipped with sealed filler device between valve rod and the valve gap, a holding groove is established to flashboard and disk seat sealing fit's terminal surface ring, the annular inflatable sealing device is fixed to the holding inslot inner seal, annular inflatable sealing device includes first gasbag and second gasbag, the one end that annular inflatable sealing device kept away from the holding groove bottom surface is equipped with O type sealing washer, O type sealing washer one end and disk seat sealing fit, the other end sets up an annular groove, the annular groove inner seal fixes the second gasbag, second gasbag other end fixed connection baffle, the baffle is fixed to set up between second gasbag and first gasbag, first gasbag fixed mounting is in the holding inslot, through the air duct intercommunication between second gasbag and the first gasbag, the inside the wearing to establish the trachea, the trachea one end and the outer air pipe is connected with the outer air pipe respectively.
Preferably, the number of the air guide pipes is a plurality.
Preferably, the second air bag is fixedly provided with a base, the outer circular surface of the base is fixedly sleeved with a reinforced spring, one end of the reinforced spring is welded on the bottom surface of the base, and the other end of the reinforced spring is welded on the end surface of the partition plate.
Preferably, the number of the bases is a plurality, the bases are arranged in pairs along the virtual diameter of the second air bag, and the reinforced springs are matched with the number of the bases.
Compared with the prior art, the utility model has the beneficial effects that:
when the valve is closed, the annular inflatable sealing device is inflated by injecting inert gas, so that the O-shaped sealing ring is tightly attached to the sealing surface of the valve seat, the inclination of the sealing surface of the annular inflatable sealing device is automatically adjusted according to the angle of the sealing surface of the valve seat, and the sealing performance of the flashboard is improved; two air bags are arranged in the annular inflatable sealing device, and ventilation of gas in the two air bags is realized, so that the first inflatable bag or the second inflatable bag is prevented from being broken.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic diagram of the assembled construction of a single annular inflatable sealing device and single sided shutter of the present utility model;
FIG. 3 is a schematic view of a partial structure of the annular inflatable sealing device of the present utility model;
FIG. 4 is a cross-sectional view of an annular inflatable sealing device of the present utility model.
In the figure: 1. A valve body; 2. a flashboard; 3. a valve seat; 4. a valve stem; 5. a valve cover; 6. sealing the filling device; 7. a hand wheel; 8. a receiving groove; 9. an annular inflatable sealing device; 10 air pipes; 90. a first air bag; 91. a partition plate; 92. a second air bag; 93. an O-shaped sealing ring; 94. a base; 95. a reinforced spring; 96. and an air duct.
Detailed Description
The double-gate valve with the inflatable sealing device shown in figure 1 comprises a valve body 1, a gate plate 2, a valve seat 3, a valve rod 4 and a valve cover 5, wherein the gate plate 2 comprises a left gate plate and a right gate plate, the left gate plate and the right gate plate are respectively in sealing fit with the valve seat 3 of an inlet and outlet runner, a middle cavity capable of accommodating the gate plate 2 is arranged in the valve body 1, the valve cover 5 is fixed on the upper end surface of the valve body 1 through bolts, the lower end of the valve rod 4 is connected with the gate plate 2, the upper end penetrates through the valve cover 5 and is fixedly connected with a hand wheel 7, a sealing filler device 6 is arranged between the valve rod 4 and the valve cover 5, an accommodating groove 8 is annularly arranged on the end surface of the gate plate 2, which is in sealing fit with the valve seat 3, an annular inflatable sealing device 9 is sealed and fixed in the accommodating groove 8, the annular inflatable sealing device 9 comprises a first air bag 90 and a second air bag 92, one end of the annular inflatable sealing device 9, which is far away from the accommodating groove 8, is provided with an O-shaped sealing ring 93, and the valve seat 3 are in sealing fit, the other end is provided with an annular groove, a second air bag 92 is fixed in the annular groove in a sealing way, the other end of the second air bag 92 is fixedly connected with a baffle plate 91, the baffle plate 91 is fixedly arranged between the second air bag 92 and a first air bag 90, the first air bag 90 is fixedly arranged in the accommodating groove 8, as shown in figure 3, the second air bag 92 is communicated with the first air bag 90 through an air duct 96, an air duct 10 is arranged in the valve rod 4, one end of the air duct 10 is connected with an external air charging device, the other end is divided into a left pipeline and a right pipeline, the left pipeline and the right pipeline are respectively communicated with a first air bag 90 fixedly arranged in the accommodating groove 8 of the left flashboard and the right flashboard, when the valve is closed, the valve rod 4 is driven to move downwards through rotating a hand wheel 7, the flashboard 2 is attached to a valve seat 3, inert gas is input into the first air bag 90 through the air duct 10 after the valve is closed, through the air duct 96, the inert gas is filled into the second air bag 92, the second air bag 92 is inflated to expand so as to push the O-shaped sealing ring 93 to press the sealing surface of the valve seat 3 to achieve sealing, the O-shaped sealing ring 93 contacts with the valve seat 3 to force the second air bag 92 to change shape, and the O-shaped sealing ring 93 is reversely extruded in the compression process of the second air bag 92 so that the O-shaped sealing ring 93 is tightly attached to the valve seat 3, and therefore sealing performance between the two is improved.
As shown in FIG. 3, the plurality of air ducts 96 can increase the speed of the air flowing into the second air bag 92, so that the sealing pair can achieve sealing more quickly.
As shown in fig. 3 and fig. 4, a base 94 is fixedly arranged between the second air bag 92 and the partition plate 91, the base 94 is fixed on the end face of the second air bag 92, a reinforced spring 95 is fixedly sleeved on the outer circular face of the base 94, one end of the reinforced spring 95 is welded to the bottom face of the base 94, the other end of the reinforced spring 95 is welded to the end face of the partition plate 91, the second air bag 92 is expanded to drive the reinforced spring 95 to be pressed, the reinforced spring 95 is extruded to push the partition plate 91 and the first air bag 90, and meanwhile, the air flow inside the first air bag 90 and the second air bag 92 is realized through an air duct 96, so that the air flow is kept in a balanced state, and the first air bag 90 and the second air bag 92 are prevented from being excessively extruded to cause rupture.
As shown in fig. 3, the number of the bases 94 is several, and the reinforced springs 95 are arranged along the virtual diameter of the second air bag 92 in a two-to-two manner, and the number of the reinforced springs is matched with the number of the bases 94, so that the thrust force of the first air bag 90 transmitted to the second air bag 92 is more uniform.
Claims (4)
1. The utility model provides a take two flashboard gate valves of inflatable sealing device, includes valve body (1), flashboard (2), disk seat (3), valve rod (4), valve gap (5), flashboard (2) are including left flashboard and right flashboard, left and right flashboard respectively with import and export disk seat (3) sealing fit of runner, be equipped with in valve body (1) can hold the well chamber of flashboard (2), valve gap (5) are through bolt fastening in valve body (1) up end, flashboard (2) are connected to valve rod (4) lower extreme, valve gap (5) and hand wheel (7) fixed connection are passed to the upper end, be equipped with between valve rod (4) and valve gap (5) sealed filler device (6), its characterized in that: the end face ring of flashboard (2) and disk seat (3) sealing fit establishes a holding groove (8), holding groove (8) internal seal fixed annular inflatable sealing device (9), annular inflatable sealing device (9) are including first gasbag (90) and second gasbag (92), the one end that holding groove (8) was kept away from to annular inflatable sealing device (9) is equipped with O type sealing washer (93), O type sealing washer (93) one end and disk seat (3) sealing fit, an annular groove is established to the other end, annular groove internal seal fixed second gasbag (92), second gasbag (92) other end fixed connection baffle (91), baffle (91) are fixed to be set up between second gasbag (92) and first gasbag (90), first gasbag (90) fixed mounting is in holding groove (8), through air duct (96) intercommunication between second gasbag (92) and the first gasbag (90), valve rod (4) inside sets up trachea (10), trachea (10) one end and outside inflatable device are connected, the other end communicates respectively and sets up first gasbag (90) in left and right flashboard holding groove (8).
2. The dual gate valve with inflatable sealing apparatus of claim 1, wherein: the number of the air ducts (96) is several.
3. The dual gate valve with inflatable sealing apparatus of claim 2, wherein: a base (94) is fixedly arranged between the second air bag (92) and the partition plate (91), a reinforced spring (95) is fixedly sleeved on the outer circular surface of the base (94), one end of the reinforced spring (95) is welded on the bottom surface of the base (94), and the other end of the reinforced spring is welded and connected with the end surface of the partition plate (91).
4. A dual gate valve with an inflatable sealing apparatus as defined in claim 3, wherein: the number of the bases (94) is a plurality, the bases are arranged in a pair of opposite mode along the virtual diameter of the second air bag (92), and the reinforced springs (95) are in a number matched with the number of the bases (94).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323024289.4U CN221097520U (en) | 2023-11-09 | 2023-11-09 | Double-flashboard gate valve with inflatable sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323024289.4U CN221097520U (en) | 2023-11-09 | 2023-11-09 | Double-flashboard gate valve with inflatable sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221097520U true CN221097520U (en) | 2024-06-07 |
Family
ID=91312402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323024289.4U Active CN221097520U (en) | 2023-11-09 | 2023-11-09 | Double-flashboard gate valve with inflatable sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221097520U (en) |
-
2023
- 2023-11-09 CN CN202323024289.4U patent/CN221097520U/en active Active
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| GR01 | Patent grant |