CN216555411U - Soft seal pneumatic butterfly valve - Google Patents
Soft seal pneumatic butterfly valve Download PDFInfo
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- CN216555411U CN216555411U CN202123256301.5U CN202123256301U CN216555411U CN 216555411 U CN216555411 U CN 216555411U CN 202123256301 U CN202123256301 U CN 202123256301U CN 216555411 U CN216555411 U CN 216555411U
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Abstract
The utility model provides a soft-sealing pneumatic butterfly valve, which comprises a valve body and a rotary valve plate arranged in the valve body, wherein a sealing sleeve is attached to the inner wall of the valve body, a sealing gasket abutted against the sealing sleeve is arranged on the outer side of the rotary valve plate, an I-shaped sealing ring matched with the sealing sleeve is further arranged on the outer side of the rotary valve plate, a supporting and pressing ring with a small hole is sleeved in the I-shaped sealing ring and used for pressing the I-shaped sealing ring, a liquid inlet hole communicated with a valve body cavity is formed in the lower part of the supporting and pressing ring, a through hole is formed in the upper part of the rotary valve plate, and a valve rod of the rotary valve plate penetrates through the through hole and is connected with a pneumatic actuator; the sealing gasket and the sealing sleeve form primary sealing, the I-shaped sealing ring and the sealing sleeve form secondary sealing, the I-shaped sealing ring can change the sealing degree with the sealing sleeve according to flowing water pressure so as to reduce abrasion of the sealing ring during rotation, and the rotary valve plate and the valve body are good in sealing performance.
Description
Technical Field
The utility model mainly relates to the technical field of butterfly valves, in particular to a soft sealing pneumatic butterfly valve.
Background
A butterfly valve, also called a flap valve, is a regulating valve with a simple structure, and can be used for on-off control of low-pressure pipeline media, namely a valve with a closing part (a valve clack or a butterfly plate) which is a disc and rotates around a valve shaft to open and close, and the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.
When the existing butterfly valve is used, the sealing washer can be abraded when rotating, so that the sealing performance of the pneumatic butterfly valve is reduced, and the sealing effect of the rotating part of the valve plate and the valve body is poor.
SUMMERY OF THE UTILITY MODEL
The utility model mainly provides a soft-sealing pneumatic butterfly valve which is used for solving the technical problems in the background technology.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the utility model provides a soft sealed pneumatic butterfly valve, wherein, includes the valve body and locates the rotary valve plate in the valve body, the laminating has the seal cover on the inner wall of valve body, the outside of rotary valve plate be equipped with the seal packing ring of seal cover butt, the outside of rotary valve plate still be equipped with seal cover complex I shape sealing washer, I shape sealing washer endotheca has the support clamp ring of taking the aperture for compress tightly I shape sealing washer, open the below of supporting the clamp ring has the feed liquor hole of intercommunication valve body intracavity, open the top of rotary valve plate has the through-hole, the valve rod of rotary valve plate passes the through-hole and is connected with pneumatic actuator.
The pneumatic actuator is used for driving the rotary valve plate to rotate to open and close the valve body, the sealing gasket and the sealing sleeve form primary sealing by fitting the sealing sleeve in the valve body, the I-shaped sealing ring and the sealing sleeve form secondary sealing, and when the water pressure is overlarge, the liquid inlet hole is used for guiding water liquid into the I-shaped sealing ring, so that the I-shaped sealing ring expands to increase the friction force with the sealing sleeve, if the water pressure is small, the friction force between the I-shaped sealing ring and the sealing sleeve is reduced, and the sealing degree between the I-shaped sealing ring and the sealing sleeve can be changed according to the flowing water pressure.
Furthermore, the pneumatic actuator is fixed on the valve body through the mounting table, a sealing check ring is arranged on the inner wall of the through hole and used for forming dynamic seal with the valve rod of the rotary valve plate, and water liquid in the through hole is prevented from being leaked.
Furthermore, the upstream surface of the rotary valve plate is arc-shaped.
Furthermore, the joints at the two ends of the valve body are both provided with flanges, and the flanges are provided with a plurality of connecting holes.
Furthermore, a sealing ring is arranged on the connecting surface of the flange.
Furthermore, the outside of valve body is equipped with buffer, buffer includes fixing base and the support ring of dress on the fixing base, the valve body cover is in the support ring, and is equipped with damping piece between valve body and the support ring, stabilizes the valve body through damping piece.
Further, damping piece is including fixing the sleeve in the valve body outside, the laminating has the damping pad on the telescopic inner wall, sliding connection has the slider in the damping pad, the support ring passes through connecting rod and slider rigid coupling, and when the valve body was rocking taking place, the slider slided in the sleeve, and the damping pad is used for the impact force to producing in the valve body fast firm.
Furthermore, a spring is arranged between the sliding block and the bottom of the sleeve, and the purpose of quick rebound of the sliding block is increased through the spring.
Compared with the prior art, the utility model has the beneficial effects that:
the sealing sleeve is attached to the valve body, the sealing washer and the sealing sleeve form primary sealing, the I-shaped sealing ring and the sealing sleeve form secondary sealing, when water pressure is too high, the liquid inlet hole is used for guiding water liquid into the I-shaped sealing ring, the I-shaped sealing ring expands, friction force between the I-shaped sealing ring and the sealing sleeve is increased, if the water pressure is low, the friction force between the I-shaped sealing ring and the sealing sleeve is reduced, the I-shaped sealing ring can change the sealing degree between the I-shaped sealing ring and the sealing sleeve according to the flowing water pressure, abrasion of the sealing ring during rotation is reduced, and the sealing performance of the rotary valve plate and the valve body is good.
The present invention will be explained in detail below with reference to the drawings and specific embodiments.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a buffer device according to the present invention;
FIG. 3 is an enlarged schematic view of the structure at A of the present invention;
fig. 4 is an enlarged schematic view of the structure at B of the present invention.
In the figure: 1. a valve body; 2. a rotary valve plate; 3. a pneumatic actuator; 4. a flange; 5. a buffer device; 11. sealing sleeves; 12. a through hole; 13. a sealing retainer ring; 21. a sealing gasket; 22. an I-shaped seal ring; 23. a liquid inlet hole; 51. a support ring; 52. a damping member; 53. a sleeve; 54. a damping pad; 55. a slider; 56. a spring.
Detailed Description
In order to facilitate an understanding of the utility model, the utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the utility model are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the utility model.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the knowledge of the terms used herein in the specification of the present invention is for the purpose of describing particular embodiments and is not intended to limit the present invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The utility model provides a soft-sealing pneumatic butterfly valve which is shown in figures 1-4 and comprises a valve body 1 and a rotary valve plate 2 arranged in the valve body 1, wherein a sealing sleeve 11 is attached to the inner wall of the valve body 1, a sealing gasket 21 abutted against the sealing sleeve 11 is arranged on the outer side of the rotary valve plate 2, an I-shaped sealing ring 22 matched with the sealing sleeve 11 is further arranged on the outer side of the rotary valve plate 2, a supporting and pressing ring with a small hole is sleeved in the I-shaped sealing ring 22 and used for pressing the I-shaped sealing ring 22, a liquid inlet hole 23 communicated with the cavity of the valve body 1 is formed below the supporting and pressing ring, a through hole 12 is formed above the rotary valve plate 2, and a valve rod of the rotary valve plate 2 penetrates through the through hole 12 to be connected with a pneumatic actuator 3.
The pneumatic actuator 3 is used for driving the rotary valve plate 2 to rotate to open and close the valve body 1, the sealing sleeve 11 is attached to the valve body 1, the sealing washer 21 and the sealing sleeve 11 form primary sealing, the I-shaped sealing ring 22 and the sealing sleeve 11 form secondary sealing, and when water pressure is too high, the liquid inlet hole 23 is used for guiding water liquid into the I-shaped sealing ring 22, so that the I-shaped sealing ring 22 expands to increase friction force with the sealing sleeve 11, if the water pressure is low, the friction force between the I-shaped sealing ring 22 and the sealing sleeve 11 is reduced, and the I-shaped sealing ring 22 can change the sealing degree with the sealing sleeve 11 according to the flowing water pressure.
As shown in fig. 1-2, the pneumatic actuator 3 is fixed on the valve body 1 through a mounting table, and a sealing retainer ring 13 is arranged on the inner wall of the through hole 12 and used for forming dynamic seal with the valve rod of the rotary valve plate 2 to prevent water liquid in the through hole 12 from leaking; the upstream surface of the rotary valve plate 2 is arc-shaped; flanges 4 are arranged at the joints of the two ends of the valve body 1, and a plurality of connecting holes are formed in the flanges 4; and a sealing ring is arranged on the connecting surface of the flange 4.
The outside of valve body 1 is equipped with buffer 5, buffer 5 includes fixing base and the support ring 51 of dress on the fixing base, valve body 1 cover is in support ring 51, and is equipped with damping piece 52 between valve body 1 and the support ring 51, stabilizes valve body 1 through damping piece 52.
As shown in fig. 4, the damping member 52 includes a sleeve 53 fixed on the outer side of the valve body 1, a damping pad 54 is attached to the inner wall of the sleeve 53, a slider 55 is slidably connected to the damping pad 54, the support ring 51 is fixedly connected to the slider 55 through a connecting rod, when the valve body 1 shakes, the slider 55 slides in the sleeve 53, and the damping pad 54 is used for quickly stabilizing an impact force generated in the valve body 1; a spring 56 is arranged between the sliding block 55 and the bottom of the sleeve 53, and the purpose of quick rebound of the sliding block 55 is increased through the spring 56.
Example one
The sealing sleeve 11 is attached to the valve body 1, the sealing washer 21 and the sealing sleeve 11 form primary sealing, the I-shaped sealing ring 22 and the sealing sleeve 11 form secondary sealing, when water pressure is too high, the liquid inlet hole 23 is used for guiding water liquid into the I-shaped sealing ring 22, so that the I-shaped sealing ring 22 expands and increases friction force with the sealing sleeve 11, if the water pressure is low, the friction force between the I-shaped sealing ring 22 and the sealing sleeve 11 is reduced, the sealing degree between the I-shaped sealing ring 22 and the sealing sleeve 11 can be changed according to the flowing water pressure, abrasion of the sealing ring during rotation is reduced, and sealing performance is improved.
Example two
When the valve body 1 shakes, the valve body 1 is stabilized through the damping piece 52, the sliding block 55 slides in the sleeve 53, and the damping pad 54 is matched with the spring 56 to generate impact force in the valve body 1, so that the purpose of rapid stabilization is achieved.
The utility model is described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the above-described embodiments, and it is within the scope of the utility model to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (8)
1. The utility model provides a soft seal pneumatic butterfly valve, its characterized in that includes valve body (1) and rotary valve plate (2) of locating in valve body (1), the laminating has seal cover (11) on the inner wall of valve body (1), the outside of rotary valve plate (2) is equipped with seal ring (21) with seal cover (11) butt, and the outside of rotary valve plate (2) still is equipped with seal cover (11) complex I shape sealing washer (22), I shape sealing washer (22) endotheca has the support clamp ring of taking the aperture for compress tightly I shape sealing washer (22), open the below of supporting the clamp ring has feed liquor hole (23) of intercommunication valve body (1) intracavity, open the top of rotary valve plate (2) has through-hole (12), the valve rod of rotary valve plate (2) passes through-hole (12) and is connected with pneumatic actuator (3).
2. The soft sealing pneumatic butterfly valve according to claim 1, characterized in that the pneumatic actuator (3) is fixed to the valve body (1) by a mounting table, and the inner wall of the through hole (12) is provided with a sealing collar (13) for forming a dynamic seal with the valve stem of the rotary valve plate (2).
3. A soft seal pneumatic butterfly valve according to claim 1, characterised in that the upstream face of the rotary valve plate (2) is of the circular arc type.
4. The soft seal pneumatic butterfly valve according to claim 1, wherein a flange (4) is arranged at the joint of the two ends of the valve body (1), and a plurality of connecting holes are formed in the flange (4).
5. A soft seal pneumatic butterfly valve according to claim 4, characterised in that the connection face of the flange (4) is provided with a sealing ring.
6. The soft seal pneumatic butterfly valve according to claim 1, wherein a buffer device (5) is arranged on the outer side of the valve body (1), the buffer device (5) comprises a fixing seat and a support ring (51) arranged on the fixing seat, the valve body (1) is sleeved in the support ring (51), and a damping member (52) is arranged between the valve body (1) and the support ring (51).
7. The soft seal pneumatic butterfly valve according to claim 6, wherein the damping member (52) comprises a sleeve (53) fixed on the outer side of the valve body (1), a damping pad (54) is attached to the inner wall of the sleeve (53), a sliding block (55) is slidably connected in the damping pad (54), and the support ring (51) is fixedly connected with the sliding block (55) through a connecting rod.
8. A soft seal pneumatic butterfly valve according to claim 7, characterised in that a spring (56) is provided between the slider (55) and the bottom of the sleeve (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123256301.5U CN216555411U (en) | 2021-12-22 | 2021-12-22 | Soft seal pneumatic butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123256301.5U CN216555411U (en) | 2021-12-22 | 2021-12-22 | Soft seal pneumatic butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216555411U true CN216555411U (en) | 2022-05-17 |
Family
ID=81545735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123256301.5U Active CN216555411U (en) | 2021-12-22 | 2021-12-22 | Soft seal pneumatic butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216555411U (en) |
-
2021
- 2021-12-22 CN CN202123256301.5U patent/CN216555411U/en active Active
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