CN214789082U - Bidirectional self-sealing structure of eccentric butterfly valve - Google Patents
Bidirectional self-sealing structure of eccentric butterfly valve Download PDFInfo
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- CN214789082U CN214789082U CN202120586685.8U CN202120586685U CN214789082U CN 214789082 U CN214789082 U CN 214789082U CN 202120586685 U CN202120586685 U CN 202120586685U CN 214789082 U CN214789082 U CN 214789082U
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Abstract
The utility model relates to an eccentric butterfly valve field, concretely relates to two-way self sealss structure of eccentric butterfly valve, its technical essential lies in: including valve body, valve plate, valve shaft, pressure disk, disk seat and pressure disk sealing washer, a valve body terminal surface sets up the benchmark groove of disk seat installation, a terminal surface sets up disk seat installation complex spacing groove on the pressure disk, the disk seat is including installing benchmark portion, spacing portion, with valve plate sealing and extension sealing, benchmark portion, spacing portion, with valve plate sealing and extension sealing integrated design, wherein the disk seat is installed between valve body and pressure disk, and passes through the benchmark groove reaches the spacing groove is fixed, with valve plate sealing with the sealed face of valve plate laminates each other and realizes closing sealedly. Through the innovative design to the disk seat structure, can seal the pressure that comes from the equidirectional, and the bigger sealing line effect of pressure is better, this self sealss structure product maintenance cost is low, long service life, safe and reliable.
Description
Technical Field
The utility model relates to an eccentric butterfly valve field, concretely relates to two-way self sealss structure of eccentric butterfly valve.
Background
The butterfly valve is a valve which uses a disc type opening and closing piece to rotate back and forth by about 90 degrees to open, close or adjust the medium flow, has simple structure, small volume, light weight, less material consumption, small installation size, small driving moment, simple operation and rapidness, and also has good flow adjusting function and closing sealing characteristic, is one of the fastest valve varieties developed in the last ten years, is very widely used, continues to expand the variety and the number of the butterfly valve, and develops towards high temperature, high pressure, large caliber, high sealing performance, long service life, good adjusting characteristic and one-valve multifunction, and has higher reliability and other performance indexes.
The one deck rubber circle is set up in the disk seat inboard to current butterfly valve, and when the butterfly plate rotated to the closure state, the butterfly plate edge prevented the fluid seepage with the contact of disk seat sealing washer, improved leakproofness, however when fluid temperature is higher, disk seat circle texture becomes soft easily, and when fluid temperature was lower, the disk seat circle receives cold contraction easily, all makes the butterfly plate can not closely laminate with the rubber circle to influence the leakproofness of butterfly valve, sealed effect is relatively poor.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art between disk seat and the valve plate laminating inseparable enough, and the leakproofness is not high, and the big sealing performance of pressure is poor the defect that forms more to provide a two-way self sealss structure of eccentric butterfly valve.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a two-way self sealss structure of eccentric butterfly valve, it is inseparable enough to laminate between disk seat and the valve plate among the solution prior art, and the leakproofness is not high to be formed, and only is limited to one-way sealed problem, and its technical essential lies in: including valve body, valve plate, valve shaft, pressure disk, disk seat and pressure disk sealing washer, a valve body terminal surface sets up the benchmark groove of disk seat installation, a terminal surface sets up disk seat installation complex spacing groove on the pressure disk, the disk seat is including installing benchmark portion, spacing portion, with valve plate sealing and extension sealing, benchmark portion, spacing portion, with valve plate sealing and extension sealing integrated design, wherein the disk seat is installed between valve body and pressure disk, and passes through the benchmark groove reaches the spacing groove is fixed, with valve plate sealing with the sealed face of valve plate laminates each other and realizes closing sealedly. Through the innovative design to the disk seat structure, can seal the pressure that comes from the equidirectional, and the bigger sealing line effect of pressure is better, this self sealss structure product maintenance cost is low, long service life, safe and reliable.
Preferably, a valve body end face is provided with a reference groove for installing a valve seat and is provided with a pressure plate sealing ring, the pressure plate sealing ring surrounds the valve body, and the pressure plate sealing ring is located between the valve body and the pressure plate.
Preferably, the outer diameter of the reference groove is larger than that of the valve seat reference part, and a gap is formed between the limiting groove of the pressure plate and the limiting part of the valve seat.
Preferably, when a medium flows to the pressure plate, the sealing surface of the valve seat bears pressure, and the pressure is kept in a gap arranged between a limiting groove of the pressure plate and a limiting part of the valve seat, so that the higher the medium pressure is, the higher the pressure applied to the valve seat is, the tighter the sealing surface of the valve plate is, and the better the sealing effect is; when a medium flows to one end of the valve body (the valve plate generates displacement after bearing pressure and pushes the valve seat sealing surface to one end surface of the pressure plate to be provided with a limiting groove matched with the valve seat in an installing mode, the larger the pressure is, the tighter the counter-acting force of the limiting groove extrudes to the sealing surface of the valve plate, and the better the sealing effect is.
The bidirectional self-sealing structure of the eccentric butterfly valve reduces friction and torque through sliding contact between the eccentric valve seat and the movement limiting valve plate. And the self-energizing valve seat ensures that the higher the pressure, the tighter the seal is, and does not depend on O-shaped rings or springs and other accessories, thereby effectively reducing the maintenance cost and prolonging the service life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a bidirectional self-sealing structure of an eccentric butterfly valve according to an embodiment of the present invention.
Fig. 2 is another schematic structural diagram of a bidirectional self-sealing structure of an eccentric butterfly valve according to an embodiment of the present invention.
Description of reference numerals:
1. a valve body; 11. a reference groove; 2. a valve plate; 21. a valve plate sealing surface; 3. a valve seat; 31. a reference part; 32. a limiting part; 33. a sealing part; 34. an extension sealing portion; 4. a valve shaft; 5. a platen; 6. and a pressure plate sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, a two-way self-sealing structure of an eccentric butterfly valve is provided, wherein a reference groove 11 for installing a valve seat 3 is formed in one end surface of a valve body 1, a limit groove 51 for installing and matching the valve seat 3 is formed in one end surface of a pressure plate 5, the valve seat 3 comprises an installation reference portion 31, a limit portion 32, a valve plate sealing portion 33 and an extension section sealing portion 34, the reference portion 31, the limit portion 32, the valve plate sealing portion 33 and the extension section sealing portion 34 are integrally designed, the valve seat 3 is installed between the valve body 1 and the pressure plate 5, a pressure plate sealing ring 6 is arranged and fixed through the reference portion 31 and the limit portion 32, and the valve plate sealing portion 33 and the valve plate sealing surface 21 are mutually attached to realize closing and sealing.
In an embodiment, referring to fig. 1, a reference groove 11 for installing a valve seat 3 is disposed on one end surface of the valve body 1, and a pressure plate sealing ring 6 is disposed, the pressure plate sealing ring 6 is disposed around the valve body 1, and the pressure plate sealing ring 6 is located between the valve body 1 and the pressure plate 5.
In one embodiment, referring to fig. 1, an outer diameter of the reference groove 11 is larger than an outer diameter of the reference portion 31 of the valve seat 3, and a gap is formed between the limiting groove 51 of the pressure plate 5 and the limiting portion 32 of the valve seat 3.
The working principle is as follows:
referring to fig. 1, when a medium flows to the pressure plate 5, the sealing surface 21 of the valve plate 2 bears pressure, and the pressure is maintained in a gap formed between the limiting groove 51 of the pressure plate 5 and the limiting portion 32 of the valve seat 3, so that the higher the medium pressure is, the higher the pressure applied to the valve seat 3 is, the tighter the sealing surface 21 of the valve plate 2 is attached; referring to fig. 2, when a medium flows to one end of the valve body 1, the valve plate 2 is displaced after pressure is applied, the sealing surface of the valve seat 3 is pushed, the limiting groove 51 matched with the valve seat 3 is arranged on one end surface of the pressure plate 5, and the larger the pressure is, the tighter the sealing surface 21 of the valve plate 2 is pressed by the counterforce of the limiting groove 51.
The application provides a two-way self sealss structure of eccentric butterfly valve, its through with sliding contact between eccentric disk seat motion restriction valve plate and the disk seat reduces friction and moment of torsion. And the self-energizing valve seat ensures that the higher the pressure, the tighter the seal is, and does not depend on O-shaped rings or springs and other accessories, thereby effectively reducing the maintenance cost and prolonging the service life.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (5)
1. The utility model provides a two-way self sealss structure of eccentric butterfly valve, includes valve body (1), valve plate (2), disk seat (3), valve shaft (4), pressure disk (5), pressure disk sealing washer (6), its characterized in that: valve body (1) terminal surface sets up benchmark groove (11) of disk seat (3) installation, a terminal surface sets up disk seat (3) installation complex spacing groove (51) on pressure disk (5), disk seat (3) are including installation benchmark portion (31), spacing portion (32), with valve plate sealing (33) and extension section sealing (34), benchmark portion (31), spacing portion (32), with valve plate sealing (33) and extension section sealing (34) integrated design, wherein install between valve body (1) and pressure disk (5) disk seat (3), and set up pressure disk sealing washer (6) and pass through benchmark portion (31) reach spacing portion (32) installation is fixed, with valve plate sealing (33) with the sealed face of valve plate (21) laminates each other and realizes closing sealedly.
2. The bidirectional self-sealing structure of an eccentric butterfly valve according to claim 1, wherein: valve body (1) one end face sets up benchmark groove (11) of disk seat (3) installation, and is provided with pressure disk sealing washer (6), pressure disk sealing washer (6) encircle valve body (1) sets up, pressure disk sealing washer (6) are located valve body (1) with between pressure disk (5).
3. The bidirectional self-sealing structure of an eccentric butterfly valve according to claim 2, wherein: the outer diameter of the reference groove (11) is larger than that of the reference part (31) of the valve seat (3), and a gap is formed between the limiting groove (51) of the pressure plate (5) and the limiting part (32) of the valve seat (3).
4. The bidirectional self-sealing structure of an eccentric butterfly valve according to claim 3, wherein: when a medium flows to the pressure plate (5), the sealing surface (21) of the valve plate (2) bears pressure, and the pressure is kept in a gap arranged between the limiting groove (51) of the pressure plate (5) and the limiting part (32) of the valve seat (3), so that the higher the medium pressure is, the higher the pressure applied to the valve seat (3) is, the tighter the joint of the sealing surface (21) of the valve plate (2) is, and the better the sealing effect is.
5. The bidirectional self-sealing structure of an eccentric butterfly valve according to claim 3, wherein: when a medium flows to one end of the valve body (1), the valve plate (2) generates displacement after pressure bearing, the sealing surface of the valve seat (3) is pushed to one end surface of the pressure plate (5) to be provided with a limiting groove (51) matched with the valve seat (3) in an installing mode, the larger the pressure is, the tighter the counterforce of the limiting groove (51) extrudes the sealing surface (21) of the valve plate (2) to be attached, and the better the sealing effect is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120586685.8U CN214789082U (en) | 2021-03-23 | 2021-03-23 | Bidirectional self-sealing structure of eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120586685.8U CN214789082U (en) | 2021-03-23 | 2021-03-23 | Bidirectional self-sealing structure of eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214789082U true CN214789082U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120586685.8U Active CN214789082U (en) | 2021-03-23 | 2021-03-23 | Bidirectional self-sealing structure of eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214789082U (en) |
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2021
- 2021-03-23 CN CN202120586685.8U patent/CN214789082U/en active Active
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