CN218992455U - Rubber plate check valve - Google Patents
Rubber plate check valve Download PDFInfo
- Publication number
- CN218992455U CN218992455U CN202223556760.XU CN202223556760U CN218992455U CN 218992455 U CN218992455 U CN 218992455U CN 202223556760 U CN202223556760 U CN 202223556760U CN 218992455 U CN218992455 U CN 218992455U
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- valve
- sealing
- indicating
- valve body
- check valve
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Abstract
The utility model discloses a rubber plate check valve, which comprises a valve body with flow ports at two ends, wherein a valve cover is connected onto the valve body in a sealing way, a sealing table which is obliquely arranged is arranged in the valve body, a through hole is arranged on the sealing table, a valve plate capable of swinging is connected onto the valve cover, a sealing gasket is arranged on the contact surface of the valve plate and the sealing table, a sealing ring lip which is arranged towards the sealing table and extends outwards is arranged on the sealing gasket, and a recoil device is arranged at the bottom of the valve body. The utility model has the advantages of good sealing effect, automatic flushing, automatic indication of valve state, prolonged service life and improved valve performance.
Description
Technical Field
The utility model relates to the technical field of screw compressors, in particular to a double thrust bearing device.
Background
The rubber plate check valve in the prior art has the basic structure that the check valve comprises a valve body, a valve cover and a rubber plate, wherein an inclined sealing table is arranged in the valve body, the check valve is realized through the sealing of the rubber plate (valve plate) and the sealing table, and the sealing principle is that the rubber plate is tightly attached to the valve body through medium pressure, so that the rubber is deformed to generate elastic force to realize sealing. The sealing lip has the defects that the sealing lip is semicircular in structure, and the sealing effect is poor after compression. In addition, the bottom of the valve is easy to accumulate impurity garbage, and the service life and performance of the check valve are reduced.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a rubber plate check valve which can achieve a good sealing effect and can clear impurity garbage accumulated in the valve.
In order to solve the technical problems, the rubber plate check valve provided by the utility model comprises a valve body with flow ports at two ends, a valve cover is connected to the valve body in a sealing way, a sealing table arranged in an inclined way is arranged in the valve body, a through hole is arranged on the sealing table, a valve plate capable of swinging is connected to the valve cover, and a sealing gasket is arranged on the contact surface of the valve plate and the sealing table, and the rubber plate check valve is structurally characterized in that: the sealing gasket is provided with a sealing ring lip which is arranged towards the sealing table and extends outwards, and the bottom of the valve body is provided with a backflushing device.
After adopting above-mentioned structure, owing to set up the sealing ring lip that outwards extends, when sealing ring lip received the extrusion, its outside was leaned on the sealing bench earlier, and later gradually its inboard also leans on the sealing bench, therefore the compression set of vice compression deformation volume of a whole set of seal has become great, and the contact surface also greatly increased, greatly increased sealed effect. The back flushing device can back flush the bottom of the valve body, so that impurity garbage accumulated at the bottom of the valve body can be cleaned at regular time, and the service life and performance of the valve body are ensured.
The sealing ring lip is gradually thinned outwards from the connecting part of the sealing ring lip and the sealing gasket, and the section of the overhanging end of the sealing ring lip is hemispherical.
The recoil device comprises an insertion sleeve which is in sealing threaded connection with the bottom of the valve body, and a cleaning rod which can extend to the valve plate is in threaded connection with the insertion sleeve.
The valve cover is connected with an indicating device capable of indicating the state of the valve plate.
The indicating device comprises a mounting hole arranged on the valve cover, a mounting seat is arranged in the mounting hole, a swingable indicating rod is arranged in the mounting seat, the inner extending end of the indicating rod extends to the valve plate, a sliding groove for the swinging of the indicating rod is arranged at the top of the mounting seat, and an indicating mark corresponding to the position of the indicating rod is further arranged on the mounting seat.
The mounting seat is internally provided with a spherical assembling hole with the inner surface, and the middle part of the indicating rod is provided with an assembling ball which can be installed in the assembling hole.
In conclusion, the utility model has the advantages of good sealing effect, automatic flushing, automatic indication of the valve state, prolonged service life and improved valve performance.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of the area A in FIG. 1;
FIG. 3 is a schematic view of a check valve according to the prior art;
fig. 4 is an enlarged schematic view of the area B in fig. 3.
Detailed Description
Referring to fig. 3 and 4, the check valve in the prior art has a basic structure including a valve body, a valve cover, a rubber plate and a sealing table, wherein the lower surface of the rubber plate is provided with a sealing ring bulge, the section of the sealing ring bulge is semicircular, when the sealing ring bulge is compressed, the sealing bulge is easy to seal with the sealing table, impurity garbage is easy to accumulate at the position X in fig. 3, and in the prior art, the check valve can be cleaned only by removing the whole valve body, so that the service life and performance of the check valve are affected.
Referring to fig. 1 and 2, the present utility model provides an embodiment of a rubber plate check valve, in which the front and rear refer to the left and right direction of the paper surface in fig. 1 for convenience of description, the up and down refer to the up and down direction of the paper surface in fig. 1, and the connection and installation described below may be understood as direct connection or indirect connection, meaning connection or installation between two members through an intermediate member.
Referring to fig. 1 and 2, the embodiment provided by the utility model comprises a valve body 1 with flow ports at two ends, a valve cover 2 is connected on the valve body 1 in a sealing way, a sealing table 11 which is obliquely arranged is arranged in the valve body 1, a through hole 12 is arranged on the sealing table 11, a valve plate 3 capable of swinging is connected on the valve cover 2, a sealing gasket 4 is arranged on the contact surface of the valve plate 3 and the sealing table 11, a sealing ring lip 41 which is arranged towards the sealing table 11 and extends outwards is arranged on the sealing gasket 4, the sealing ring lip 41 is gradually thinned outwards from the connection part of the sealing ring lip 41 and the sealing gasket 4, and the section of the overhanging end of the sealing ring lip 41 is hemispherical. The sealing ring lip 41 can be gradually matched with the table surface of the sealing table 11, and the contact surface is gradually increased along with the increase of the fluid pressure, so that the sealing effect is ensured.
Referring to fig. 1, the bottom of the valve body 1 is provided with a backflushing device, the backflushing device comprises an insertion sleeve 5 which is in sealing screwed connection with the bottom of the valve body 1, a cleaning rod 6 which can extend to the valve plate 3 is in screwed connection with the insertion sleeve 5, the accumulated impurity garbage can be loosened through the cleaning rod, and the impurity garbage can be guided out through the insertion sleeve, so that cleaning work can be performed.
Referring to fig. 1, the valve cover 2 is connected with an indicating device capable of indicating the state of the valve plate 3. The indicating device comprises an installing hole arranged on the valve cover 2, an installing seat 7 is arranged in the installing hole, a swingable indicating rod 8 is inserted in the installing seat 7, the inner extending end of the indicating rod 8 extends to the valve plate 3, a sliding groove 71 for the indicating rod 8 to swing is arranged at the top of the installing seat 7, an indicating mark corresponding to the position of the indicating rod 8 is further arranged on the installing seat 7, a spherical assembling hole with the inner surface is arranged in the installing seat 7, and an assembling ball 81 capable of being installed in the assembling hole is arranged in the middle of the indicating rod 8. Through the spherical surface matching, the indication rod 8 can freely swing, the swing direction is limited through the sliding groove 71, when the valve plate 3 is in the direction in the figure, the lower end of the indication rod 8 is abutted against the valve plate under the action of gravity, and when the valve plate is in an open state, the valve plate pushes the indication rod 8 to swing, so that the upper end of the indication rod 8 corresponds to a corresponding indication mark, and an operator can accurately know the state of the valve.
The present utility model is not limited to the above-described embodiments, and it is within the scope of the present utility model to provide equivalent variations on the specific structures of the present utility model and to replace the components in the present utility model, as will be apparent to those skilled in the art.
Claims (6)
1. The utility model provides a rubber slab check valve, includes valve body (1) that both ends are provided with the circulation mouth, sealing connection has valve gap (2) on valve body (1), be equipped with sealing platform (11) that the slope set up in valve body (1), be equipped with through hole (12) on sealing platform (11), be connected with wobbling valve plate (3) on valve gap (2), the contact surface of valve plate (3) and sealing platform (11) is equipped with sealed pad (4), characterized by: the sealing gasket (4) is provided with a sealing ring lip (41) which is arranged towards the sealing table (11) and extends outwards, and the bottom of the valve body (1) is provided with a backflushing device.
2. The rubber sheet check valve of claim 1, wherein: the sealing ring lip (41) is gradually thinned outwards from the connecting part of the sealing ring lip (41) and the sealing gasket (4), and the section of the overhanging end of the sealing ring lip (41) is hemispherical.
3. The rubber sheet check valve of claim 1, wherein: the recoil device comprises an insertion sleeve (5) which is in sealing threaded connection with the bottom of the valve body (1), and a cleaning rod (6) which can extend to the valve plate (3) is in threaded connection with the insertion sleeve (5).
4. A rubber-sheet check valve according to any one of claims 1-3, characterized in that: the valve cover (2) is connected with an indicating device capable of indicating the state of the valve plate (3).
5. The rubber sheet check valve of claim 4, wherein: the indicating device comprises a mounting hole arranged on the valve cover (2), a mounting seat (7) is arranged in the mounting hole, a swingable indicating rod (8) is inserted in the mounting seat (7), the inner extending end of the indicating rod (8) extends to the valve plate (3), a chute (71) for the swinging of the indicating rod (8) is arranged at the top of the mounting seat (7), and an indicating mark corresponding to the position of the indicating rod (8) is further arranged on the mounting seat (7).
6. The rubber sheet check valve of claim 5, wherein: the mounting seat (7) is internally provided with a spherical assembling hole with the inner surface, and the middle part of the indicating rod (8) is provided with an assembling ball (81) which can be arranged in the assembling hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223556760.XU CN218992455U (en) | 2022-12-30 | 2022-12-30 | Rubber plate check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223556760.XU CN218992455U (en) | 2022-12-30 | 2022-12-30 | Rubber plate check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218992455U true CN218992455U (en) | 2023-05-09 |
Family
ID=86217782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223556760.XU Active CN218992455U (en) | 2022-12-30 | 2022-12-30 | Rubber plate check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218992455U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116357784A (en) * | 2023-06-01 | 2023-06-30 | 海普瑞(常州)洁净系统科技有限公司 | High purity check valve for ultrapure water |
-
2022
- 2022-12-30 CN CN202223556760.XU patent/CN218992455U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116357784A (en) * | 2023-06-01 | 2023-06-30 | 海普瑞(常州)洁净系统科技有限公司 | High purity check valve for ultrapure water |
| CN116357784B (en) * | 2023-06-01 | 2023-08-25 | 海普瑞(常州)洁净系统科技有限公司 | High Purity Check Valve for Ultrapure Water |
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