CN220930214U - Sealing valve - Google Patents
Sealing valve Download PDFInfo
- Publication number
- CN220930214U CN220930214U CN202322639417.XU CN202322639417U CN220930214U CN 220930214 U CN220930214 U CN 220930214U CN 202322639417 U CN202322639417 U CN 202322639417U CN 220930214 U CN220930214 U CN 220930214U
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- CN
- China
- Prior art keywords
- valve
- sealing
- cylinder
- rod
- assembly
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 107
- 210000004907 gland Anatomy 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 35
- 230000006835 compression Effects 0.000 claims 6
- 238000007906 compression Methods 0.000 claims 6
- 210000001503 joint Anatomy 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Lift Valve (AREA)
Abstract
The utility model discloses a sealing valve which comprises a valve body, wherein an air inlet section is arranged at the left end of the valve body, an air outlet section is arranged at the right end of the valve body, a valve cavity communicated with the air inlet section and the air outlet section is arranged in the valve body, a valve cover is locked at the top end of the valve body by matching with a gland assembly screw, a cylinder body and a cylinder cover which is connected to the cylinder body in a threaded manner are connected to the valve cover in a threaded manner, and a driving air source is connected to the valve cover through an air inlet in the valve cover. The cylinder body is internally provided with a cylinder assembly, the top of the cylinder assembly is provided with a cylinder rod through a piston, the piston is sleeved with a spring which is in butt joint with the top of the cylinder cover through a guide sleeve, one end of the cylinder rod, which is far away from the piston, freely penetrates through the cylinder assembly and penetrates through a valve cover to be connected with a corrugated pipe valve rod in a valve cavity through a connecting sleeve, the bottom end of the corrugated pipe valve rod is in sealing fit with the air inlet end of the valve cavity through a sealing assembly, and the condition that local stress concentration between a valve clack sealing piece and a valve clack screw causes damage or sealing failure can be avoided.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a sealing valve.
Background
Valves typically include a valve body and a flap disposed within the valve body that moves relative to the valve body to effect opening and closing of the valve. In order to ensure that the valve is able to effectively shut off the fluid path, the flap is typically provided with a seal which is in sufficient contact with the valve seat on the valve body to ensure sealing and thereby shut off the fluid line on either side of the valve seat.
The existing sealing element is arranged at the bottom of the corrugated pipe valve rod through a screw, in order to prevent a gas medium from passing through a gap between a sealing gasket and a valve clack screw, so that leakage is caused, the sealing element is required to be compressed and deformed at a position contacted with the valve clack screw, and the tightness of the valve clack is guaranteed. And is easily broken due to excessive deformation or excessive stress when the seal is pressed.
Disclosure of utility model
The utility model aims to provide a sealing valve, which can avoid the condition that local stress concentration between a valve clack sealing element and a valve clack screw causes damage or sealing failure.
The technical scheme of the utility model is realized as follows:
The utility model provides a sealing valve, includes the valve body, the valve body left end is equipped with the section of admitting air, and the right-hand member is equipped with the section of giving vent to anger, be equipped with the valve pocket that is linked together with section of admitting air and section of giving vent to anger in the valve body, valve body top cooperation gland subassembly screw lock has the valve gap, threaded connection has cylinder block and the cylinder head of threaded connection on the cylinder block on the valve gap, set up the air inlet with cylinder block bottom intercommunication on the valve gap to connect the drive air supply through the air inlet.
The cylinder body is internally provided with a cylinder assembly, the top of the cylinder assembly is provided with a cylinder rod through a piston, the piston is sleeved with a spring which is abutted against the top of the cylinder cover through a guide sleeve, one end of the cylinder rod, which is far away from the piston, freely penetrates through the cylinder assembly and penetrates through a valve cover to be connected with a corrugated pipe valve rod in the valve cavity through a connecting sleeve, and the bottom end of the corrugated pipe valve rod is in sealing fit with the air inlet end of the valve cavity through a sealing assembly.
As a further description of the above technical solution:
the sealing assembly comprises a valve clack sealing element and a valve clack screw;
the valve clack sealing piece is embedded in a sealing groove formed in the bottom end of the corrugated pipe valve rod and is fixed to the bottom of the corrugated pipe valve rod through a valve clack screw, and the valve clack sealing piece can seal the air inlet end of the valve cavity.
As a further description of the above technical solution:
the valve clack screw is provided with a first extrusion surface and a second extrusion surface which are continuous;
The first extrusion surface is a horizontal plane, and an included angle a is formed between the second extrusion surface and the normal line of the plane where the valve clack screw is located.
As a further description of the above technical solution:
An extrusion groove which is in sealing fit with the first extrusion surface in the horizontal direction is formed in the axial direction of the valve clack sealing element; and
And the through hole is used for allowing the valve clack screw to pass through and is communicated with the extrusion groove.
As a further description of the above technical solution:
The valve clack sealing element is compressively deformed under the extrusion action of the first extrusion surface and the second extrusion surface.
As a further description of the above technical solution:
The inner wall of the sealing groove is provided with a plurality of caulking grooves along the height direction, and the valve clack sealing piece can be compressed and deformed into the caulking grooves during extrusion.
As a further description of the above technical solution:
the gland assembly comprises a gland in sealing fit with the bottom of the valve cover and a sealing ring in extrusion fit with a first sealing groove at the bottom of the gland.
As a further description of the above technical solution:
The top of the sealing ring is provided with a curved surface which is in extrusion sealing with the inner wall of the first sealing groove, and the bottom of the sealing ring is provided with a concave surface which is in extrusion sealing with the annular contour of the top of the valve body.
The beneficial effects of the utility model are as follows:
(1) Be equipped with continuous first extrusion face and second extrusion face on the screw of valve clack, first extrusion face is the horizontal plane, and second extrusion face is formed with contained angle a with the planar normal of valve clack screw place, can increase the area of contact between valve clack sealing member and the valve clack screw through continuous first extrusion face and second extrusion face to reduce the problem that local stress concentrated between valve clack sealing member and the valve clack screw, thereby reduce when assembling or the gaseous circumstances that the valve clack sealing member leads to destroying seal failure because of local stress is too big in high pressure environment.
(2) A plurality of caulking grooves are formed in the inner wall of the sealing groove along the height direction of the sealing groove, so that the valve clack sealing piece can be compressed and deformed into the caulking grooves during extrusion. When the valve clack sealing element is assembled with the valve clack screw, the extruded valve clack sealing element can be extruded and deformed into the caulking groove, so that the sealing performance of the valve clack sealing element and the sealing groove is improved, and the sealing effect of the valve clack sealing element and the sealing groove can be improved in a high-pressure environment.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a sealing valve;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of the structure of a valve stem;
Fig. 4 is a schematic view of a flap screw.
FIG. 5 is a schematic view of a flap seal;
FIG. 6 is an enlarged view at B in FIG. 1;
FIG. 7 is a schematic view of a seal ring;
Fig. 8 is a schematic view of a gland.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Referring to fig. 1-8, the sealing valve according to the embodiment of the utility model comprises a valve body 1, wherein an air inlet section 2 is arranged at the left end of the valve body 1, an air outlet section 3 is arranged at the right end of the valve body, a valve cavity 4 communicated with the air inlet section 2 and the air outlet section 3 is arranged in the valve body 1, a valve cover 6 is assembled at the top end of the valve body 1, a cylinder body 7 and a cylinder cover 8 which is in threaded connection with the cylinder body 7 are in threaded connection with the valve cover 6, and an air inlet 9 communicated with the bottom of the cylinder body 7 is arranged on the valve cover 6.
The cylinder body 7 is internally provided with a cylinder assembly 11, the top of the cylinder assembly 11 is provided with a cylinder rod 13 through a piston 12, the piston 12 is sleeved with a spring 15 which is abutted against the top of the cylinder cover 8 through a guide sleeve 14, one end of the cylinder rod 13, which is far away from the piston 12, freely penetrates through the cylinder assembly 11 and penetrates through a valve cover 6 to be connected with a corrugated pipe valve rod 17 in the valve cavity 4 through a connecting sleeve 16, and the bottom end of the corrugated pipe valve rod 17 is in sealing fit with the air inlet end of the valve cavity 4 through a sealing assembly 18.
When the device works, the air inlet 9 is externally connected with a driving air source, the air source is conveyed to the bottom of the cylinder body 7 through the air inlet 9, the piston 12 is driven to move upwards through the air cylinder assembly 11, the air cylinder rod 13 and the bellows valve rod 17 connected with the air cylinder rod 13 can be driven to move upwards synchronously when the piston 12 moves upwards, the air inlet end of the valve cavity 4 is opened, and the circulation of the hydrogen chloride gas from the air inlet section 2 to the air outlet section 3 through the valve cavity 4 is realized. When the driving air source is closed, the air cylinder assembly 11 drives the piston 12 to move downwards, the piston 12 can drive the air cylinder rod 13 and the bellows valve rod 17 connected with the air cylinder rod 13 to move downwards synchronously, and the sealing assembly 18 at the bottom end of the bellows valve rod 17 is in sealing fit with the air inlet end of the valve cavity 4, so that the valve body 1 is closed.
In one embodiment of the present utility model, referring to FIGS. 2 and 3, the seal assembly 18 includes a flap seal 18-1 and a flap screw 18-2; the valve clack sealing element 18-1 is embedded in a sealing groove 19 formed in the bottom end of the corrugated pipe valve rod 17 and is fixed to the bottom of the corrugated pipe valve rod 17 through a valve clack screw 18-2, and the valve clack sealing element 18-1 can seal the air inlet end of the valve cavity 4.
To prevent the hydrogen chloride gas medium from leaking through the gap between the flap seal 18-1 and the flap screw 18-2. Referring to fig. 4, the valve flap screw 18-2 is provided with a continuous first pressing surface 18a and a continuous second pressing surface 18b; the first extrusion surface 18a is a horizontal plane, an included angle a is formed between the second extrusion surface 18b and the normal line of the plane where the valve clack screw 18-2 is located, the contact area between the valve clack seal 18-1 and the valve clack screw 18-2 can be increased through the continuous first extrusion surface 18a and the continuous second extrusion surface 18b, and the local stress concentration between the valve clack seal 18-1 and the valve clack screw 18-2 is reduced, so that the situation that the valve clack seal 18-1 is damaged and fails due to overlarge local stress in assembly or in a high-pressure environment is reduced.
In the scheme of the utility model, referring to fig. 2 and 5, a pressing groove 18c which is in sealing fit with the first pressing surface 18a in the horizontal direction is formed in the axial direction of the valve clack sealing member 18-1; and a through hole 18d through which the flap screw 18-2 passes. The first extrusion surface 18a can be extruded and deformed in the axial direction of the valve clack seal 18-1 through the extrusion groove 18c, so that the valve clack seal 18-1 can be uniformly contacted with the inner wall of the sealing groove 19 and extruded and sealed, and leakage caused by uneven sealing or stress of the valve clack seal 18-1 during assembly or in a high-pressure environment is reduced.
In one embodiment of the utility model, and with reference to FIG. 3, the valve flap seal 18-1 is further protected from damage failure due to local overstresses during assembly by excessive forces or by hydrogen chloride gas under high pressure conditions. A plurality of caulking grooves 20 are formed in the inner wall of the seal groove 19 in the height direction thereof, so that the flap seal 18-1 can be compressively deformed into the caulking grooves 20 upon pressing. When the valve clack sealing element 18-1 is assembled with the valve clack screw 18-2, the extruded valve clack sealing element 18-1 can be extruded and deformed into the caulking groove 20, so that the sealing performance of the valve clack sealing element 18-1 and the sealing groove 19 is further improved, and the condition that the valve clack sealing element 18-1 is damaged and fails due to overlarge local stress during assembly or in a high-pressure environment is reduced.
The caulking groove 20 is opened along the depth direction of the sealing groove 19, so that the valve clack seal 18-1 can form a plurality of sealing surfaces and contact areas when being extruded into the caulking groove 20, and an extrusion space is provided for the valve clack seal 18-1 in a high pressure environment.
In one embodiment of the present utility model, referring to fig. 6 to 8, in order to be able to secure the tightness during the assembly of the valve body 1 with the valve cover 6 and the tightness of the valve chamber 4. The screw lock of the top end of the valve body 1 matched with the gland assembly 5 is provided with a valve cover 6, and the gland assembly 5 comprises a gland 5a in sealing fit with the bottom of the valve cover 6 and a sealing ring 5c in extrusion fit with a first sealing groove 5b at the bottom of the gland 5 a.
The top of the sealing ring 5c is provided with a curved surface m which is in extrusion sealing with the inner wall of the first sealing groove 5b, and the bottom of the sealing ring 5c is provided with a concave surface n which is in extrusion sealing with the annular contour of the top of the valve body 1. When the valve body 1 and the valve cover 6 are assembled through screws, an annular contour at the top end of the valve body 1 and the inner side surface of the concave surface n at the bottom of the sealing ring 5c form extrusion sealing points, and meanwhile, a sealing surface matched with the first sealing groove 5b is formed on the curved surface m at the top of the sealing ring 5c, so that the sealing effect between the valve body 1 and the valve cover 6 is improved, and hydrogen chloride gas leakage in the valve cavity 4 after the valve body 1 is closed is avoided.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (8)
1. The sealing valve comprises a valve body, wherein an air inlet section is arranged at the left end of the valve body, an air outlet section is arranged at the right end of the valve body, and a valve cavity communicated with the air inlet section and the air outlet section is arranged in the valve body;
the cylinder body is internally provided with a cylinder assembly, the top of the cylinder assembly is provided with a cylinder rod through a piston, the piston is sleeved with a spring which is abutted against the top of the cylinder cover through a guide sleeve, one end of the cylinder rod, which is far away from the piston, freely penetrates through the cylinder assembly and penetrates through a valve cover to be connected with a corrugated pipe valve rod in the valve cavity through a connecting sleeve, and the bottom end of the corrugated pipe valve rod is in sealing fit with the air inlet end of the valve cavity through a sealing assembly.
2. The sealing valve of claim 1, wherein said sealing assembly comprises a flap seal and a flap screw;
the valve clack sealing piece is embedded in a sealing groove formed in the bottom end of the corrugated pipe valve rod and is fixed to the bottom of the corrugated pipe valve rod through a valve clack screw, and the valve clack sealing piece can seal the air inlet end of the valve cavity.
3. A sealing valve as claimed in claim 2, wherein the flap screw is provided with a continuous first compression surface and second compression surface;
The first extrusion surface is a horizontal plane, and an included angle a is formed between the second extrusion surface and the normal line of the plane where the valve clack screw is located.
4. A sealing valve according to claim 3, wherein the valve flap seal is axially provided with a pressing groove which is in sealing engagement with the first pressing surface in a horizontal direction; and
And the through hole is used for allowing the valve clack screw to pass through and is communicated with the extrusion groove.
5. The sealing valve of claim 4, wherein said flap seal is compressively deformed by compression of said first and second compression surfaces.
6. The sealing valve according to claim 2, wherein a plurality of caulking grooves are formed in the inner wall of the sealing groove in the height direction thereof, and the valve flap seal is compressively deformed into the caulking grooves upon pressing.
7. The sealing valve of any one of claims 1-6, wherein the gland assembly includes a gland in sealing engagement with a bottom of the valve cap and a seal ring in pressing engagement with a first seal groove in the bottom of the gland.
8. The sealing valve of claim 7, wherein the top of the sealing ring has a curved surface for compression sealing against the inner wall of the first sealing groove, and the bottom of the sealing ring has a concave surface for compression sealing against the annular contour of the top of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322639417.XU CN220930214U (en) | 2023-09-27 | 2023-09-27 | Sealing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322639417.XU CN220930214U (en) | 2023-09-27 | 2023-09-27 | Sealing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220930214U true CN220930214U (en) | 2024-05-10 |
Family
ID=90936506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322639417.XU Active CN220930214U (en) | 2023-09-27 | 2023-09-27 | Sealing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220930214U (en) |
-
2023
- 2023-09-27 CN CN202322639417.XU patent/CN220930214U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |