CN216895800U - Bidirectional soft sealing butterfly valve - Google Patents
Bidirectional soft sealing butterfly valve Download PDFInfo
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- CN216895800U CN216895800U CN202122689922.6U CN202122689922U CN216895800U CN 216895800 U CN216895800 U CN 216895800U CN 202122689922 U CN202122689922 U CN 202122689922U CN 216895800 U CN216895800 U CN 216895800U
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- elastic rubber
- sealing
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Abstract
The utility model relates to a bidirectional soft sealing butterfly valve which comprises a valve body, a valve seat, a butterfly plate, a valve rod and a driving device, wherein the butterfly plate is fixedly arranged in the middle of the valve rod by a pin shaft, and the upper end of the valve rod is connected with the driving device; the method is characterized in that: the disk seat adopts elastic rubber sealing ring, by clamping ring, screw fixed mounting in the valve body passageway, be equipped with in the plane of elastic rubber sealing ring and clamping ring mutual contact with the valve body passageway concentric ring channel, the clamping ring be equipped with the annular boss of ring channel interfitting has annular plane between elastic rubber sealing ring hole and the clamping ring inner bore wall. The reverse medium pressure acts on the annular plane to push the valve seat to elastically deform and tightly press and be in sealing fit with the butterfly plate, so that the bidirectional sealing function is realized, the problem of moving abrasion of the floating valve seat in a valve body channel in the prior art is solved, and the floating valve has the advantages of reliable sealing performance, long service life and the like.
Description
Technical Field
The utility model belongs to the field of valves, and particularly relates to a butterfly valve which is suitable for engineering such as thermoelectricity and water conservancy.
Background
The traditional two-way sealing butterfly valve generally adopts a floating valve seat, the valve seat can axially move in a valve body channel, reverse medium pressure is utilized to push the valve seat to move towards a butterfly plate, a sealing surface of the valve seat and a sealing surface of the butterfly plate are tightly pressed and sealed, reverse sealing performance is achieved, and a two-way sealing function is achieved. The main defects are that a dynamic sealing structure is arranged between the outer circular surface of the valve seat and the inner wall of a valve body channel, and a sealing ring between the valve seat and the valve body channel is easy to wear in the long-term opening and closing process, so that leakage is caused, the sealing reliability is poor, and the service life of a product is short.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides the bidirectional soft sealing butterfly valve which is reliable in sealing performance and long in service life of products.
The technical scheme of the utility model comprises a valve body, a valve seat, a butterfly plate, a valve rod and a driving device, wherein the butterfly plate is fixedly arranged in the middle of the valve rod by a pin shaft, and the upper end of the valve rod is connected with the driving device; the method is characterized in that: the disk seat adopts elastic rubber sealing ring, by clamping ring, screw fixed mounting in the valve body passageway, be equipped with in the plane of elastic rubber sealing ring and clamping ring mutual contact with the valve body passageway concentric ring channel, the clamping ring be equipped with the annular boss of ring channel interfitting has annular plane between elastic rubber sealing ring hole and the clamping ring inner bore wall.
Preferably, an annular groove is formed between the annular boss of the pressing ring and the inner hole wall, and the annular groove and the annular plane of the elastic rubber sealing ring are provided with annular bosses matched with the annular groove of the pressing ring.
Preferably, the valve rod central line and the valve body channel central line have radial eccentricity, the valve rod central line and the valve seat sealing surface have axial eccentricity, and the valve seat sealing surface and the butterfly plate sealing surface are matched with each other by adopting a positive cone sealing surface to form a double-eccentricity structure.
Compared with the prior art, the utility model has the beneficial effects that: the valve seat adopts an elastic rubber sealing ring, the pressing ring is fixedly arranged in the valve body channel, an annular plane is arranged between the inner hole and the inner hole wall of the pressing ring, reverse medium pressure acts on the annular plane to push the valve seat to elastically deform and tightly press the butterfly plate to be in sealing fit, the two-way sealing function is realized, the problem of moving abrasion of the floating valve seat in the valve body channel in the prior art is solved, and the valve seat has the advantages of reliable sealing performance, long service life and the like.
Drawings
Fig. 1 is an overall structural view of the present invention.
In the figure: the valve comprises a valve body 1, a pressure ring 2, a valve seat 3, a butterfly plate 4, a valve rod 5, a pin shaft 6, a screw 7, an axle sleeve 8, a packing 9, a gland 10 and a support 11.
Detailed Description
The bidirectional soft seal butterfly valve shown in fig. 1 comprises a valve body 1, a valve seat 3, a butterfly plate 4, a valve rod 5 and a driving device, wherein the butterfly plate 4 is fixedly arranged in the middle of the valve rod 5 through a pin shaft 6, the upper end of the valve rod 5 is connected with the driving device, a shaft sleeve 8 is arranged between a shaft hole of the valve body 1 and the outer circular surface of the valve rod 5, the rotating friction force of the valve rod 5 is reduced, the opening and closing torque is reduced, a packing 9 is arranged between the shaft hole at the upper end of the valve body 1 and the valve rod 5, the packing 9 is tightly pressed and installed by a gland 10, and the driving device is fixedly arranged at the upper end of the valve body 1 through a support 11; the method is characterized in that: the valve seat 3 adopts an elastic rubber sealing ring, the pressing ring 2 and the screw 7 are fixedly arranged in a channel of the valve body 1, an annular groove concentric with the channel of the valve body 1 is arranged in a plane where the elastic rubber sealing ring is contacted with the pressing ring 2, the pressing ring 2 is provided with an annular boss matched with the annular groove, the annular boss is embedded in the annular groove of the elastic rubber sealing ring, the radial positioning precision of the valve seat 3 is improved, meanwhile, the rigidity of the elastic rubber sealing ring is increased when the medium pressure is positive, the sealing specific pressure between the sealing surface of the butterfly plate 4 and the elastic rubber sealing ring is improved, in addition, the annular groove reduces the reverse rigidity, the reverse medium pressure more easily pushes the elastic rubber sealing ring to elastically deform, an annular plane is arranged between the inner hole of the elastic rubber sealing ring and the inner hole wall of the pressing ring 2, namely, the circulation hole of the elastic rubber sealing ring is smaller than the inner hole of the pressing ring 2, and the reverse medium pressure acts on the annular plane of the elastic rubber sealing ring in the inner hole of the pressing ring 2, the elastic rubber sealing ring is pushed to deform, and the sealing surface of the sealing surface pressing butterfly plate 4 is in sealing fit with each other, so that the reverse sealing function is realized.
An annular groove is formed between the annular boss of the compression ring 2 and the inner hole wall, an annular boss matched with the annular groove of the compression ring 2 is arranged between the annular groove of the elastic rubber sealing ring and the annular plane, and the annular boss is embedded in the annular groove of the compression ring 2, so that the positioning precision of the valve seat 3 is further improved.
An eccentricity is radially arranged between the central line of the valve rod 5 and the central line of the channel of the valve body 1, an eccentricity is axially arranged between the central line of the valve rod 5 and the sealing surface of the valve seat 3 in the channel of the valve body 1, and the sealing surface of the valve seat 3 and the sealing surface of the butterfly plate 4 are matched with each other by adopting a positive cone sealing surface to form a double-eccentricity structure.
Claims (3)
1. A bidirectional soft sealing butterfly valve comprises a valve body (1), a valve seat (3), a butterfly plate (4), a valve rod (5) and a driving device, wherein the butterfly plate (4) is fixedly arranged in the middle of the valve rod (5) through a pin shaft (6), and the upper end of the valve rod (5) is connected with the driving device; the method is characterized in that: disk seat (3) adopt the elastic rubber sealing ring, by clamping ring (2), screw (7) fixed mounting in valve body (1) passageway, be equipped with in the plane of elastic rubber sealing ring and clamping ring (2) mutual contact with valve body (1) passageway endocentric ring channel, clamping ring (2) be equipped with the annular boss of ring channel mutually supporting, have the annular plane between elastic rubber sealing ring hole and clamping ring (2) interior pore wall.
2. The bidirectional soft seal butterfly valve of claim 1, wherein: an annular groove is arranged between the inner circular surface of the annular boss of the compression ring (2) and the inner hole wall, and an annular boss matched with the annular groove of the compression ring (2) is arranged between the annular groove of the elastic rubber sealing ring and the annular plane.
3. The bidirectional soft seal butterfly valve of claim 1 or 2, wherein: an eccentric distance is radially arranged between the central line of the valve rod (5) and the central line of the channel of the valve body (1), an eccentric distance is axially arranged between the central line of the valve rod (5) and the sealing surface of the valve seat (3) in the channel of the valve body (1), and the sealing surface of the valve seat (3) and the sealing surface of the butterfly plate (4) are matched with each other by adopting a positive cone sealing surface to form a double eccentric structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689922.6U CN216895800U (en) | 2021-11-05 | 2021-11-05 | Bidirectional soft sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122689922.6U CN216895800U (en) | 2021-11-05 | 2021-11-05 | Bidirectional soft sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216895800U true CN216895800U (en) | 2022-07-05 |
Family
ID=82201314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122689922.6U Active CN216895800U (en) | 2021-11-05 | 2021-11-05 | Bidirectional soft sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216895800U (en) |
-
2021
- 2021-11-05 CN CN202122689922.6U patent/CN216895800U/en active Active
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