CN215567987U - Novel flange joint metal hard seal eccentric butterfly valve - Google Patents
Novel flange joint metal hard seal eccentric butterfly valve Download PDFInfo
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- CN215567987U CN215567987U CN202121107734.1U CN202121107734U CN215567987U CN 215567987 U CN215567987 U CN 215567987U CN 202121107734 U CN202121107734 U CN 202121107734U CN 215567987 U CN215567987 U CN 215567987U
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Abstract
The utility model provides a novel flange connection metal hard sealing eccentric butterfly valve which comprises a valve body, a butterfly plate, a valve seat, a valve rod, a pressing plate, a sealing ring, an A connecting pipe, a B connecting pipe, a pressure reversing valve, a two-position three-way ball valve and a pressure guide pipe, wherein the butterfly plate is rotatably arranged on the valve seat through the valve rod, the sealing ring is arranged between the pressing plate and the butterfly plate, and the sealing ring is of a hollow structure; two interfaces of the pressure reversing valve are respectively connected with a first pressure sensing hole and a second pressure sensing hole of the valve body through an adapter A and an adapter B, the other interface is connected with a two-position three-way ball valve, one of the other two interfaces of the two-position three-way ball valve is communicated with a third pressure sensing hole, and the other interface of the two-position three-way ball valve is communicated with the atmosphere; and a first drainage groove and a second drainage groove of an upper shaft of the valve rod are respectively communicated with a third pressure sensing hole in the valve body and a second drainage hole in the butterfly plate, and the second drainage holes are communicated with the grooves at the bottom of the sealing ring. The metal hard-sealing eccentric butterfly valve effectively avoids excessive extrusion of the sealing ring, and has reliable sealing and long service life.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to the technical field of eccentric butterfly valves, in particular to a novel flange-connected metal hard-sealed eccentric butterfly valve.
[ background of the utility model ]
The flange connection metal hard seal eccentric butterfly valve is used as equipment for cutting off and adjusting pipeline media, has the characteristics of simple operation, high water delivery efficiency, short opening and closing time and the like, and is widely applied to the fields of water plants, power stations, petrifaction, industrial pipelines, remote water delivery and the like.
The sealing structure of the flange connection metal hard sealing eccentric butterfly valve in the prior art mainly comprises two types, one type is a pressing plate type and is a floating valve seat, the pressing plate type structure is formed by fixing multi-layer sealing rings made of composite materials on a butterfly plate in modes of extrusion, clamping grooves and the like, the manufacturing process is simple, the compression amount of the sealing rings can be finely adjusted, the service life of the sealing rings is short, and the application field is limited. The floating valve seat structure has no sealing ring, but a layer of stainless steel is welded on the periphery of the butterfly plate in an overlaying mode to form sealing with the stainless steel valve seat arranged on the valve body, the valve seat can move along the inner cavity of the valve body, and the moving range is determined by the position of the stop step on the valve body and the position of the adjusting pressure plate. The structure has higher requirement on the sealing surface of the butterfly plate and complex manufacturing process, but because the sealing pair is made of stainless steel, the service life of the sealing pair is long, the application range is wide, and the novel flange connection metal hard sealing eccentric butterfly valve is provided.
[ Utility model ] content
The utility model aims to solve the problems in the prior art, and provides a novel flange-connected metal hard-sealed eccentric butterfly valve which can effectively avoid excessive extrusion of a sealing ring, is reliable in sealing and has long service life.
In order to achieve the purpose, the utility model provides a novel flange connection metal hard sealing eccentric butterfly valve, which comprises a main valve part and a piping part, wherein the piping part and the main valve part form a complete control loop; the distribution pipe part comprises an A connection pipe, a B connection pipe, a pressure reversing valve, a two-position three-way ball valve and a pressure guide pipe, wherein the pressure reversing valve is provided with three interfaces, two interfaces in the same direction are respectively connected with a first pressure sensing hole and a second pressure sensing hole on two side surfaces of the valve body through the A connection pipe and the B connection pipe, the rest one interface is connected with the two-position three-way ball valve, one interface in the other two interfaces of the two-position three-way ball valve is communicated with a third pressure sensing hole at the upper shaft end of the valve body through the pressure guide pipe, and the other interface is communicated with the atmosphere through a hose; the upper shaft of the valve rod is provided with a first drainage groove and a second drainage groove respectively at the parts matched with the valve body and the butterfly plate, the first drainage groove and the second drainage groove are communicated with a first drainage hole in the upper shaft respectively, the first drainage groove and the second drainage groove are communicated with a third pressure sensing hole in the valve body and a second drainage hole in the butterfly plate respectively, the sealing ring is of a hollow structure, the inner ring of the sealing ring is provided with a notch communicated with an inner cavity of the sealing ring, and the second drainage hole is communicated with the inner cavity of the sealing ring through the notch.
Preferably, the cross section of the sealing ring is of a T-shaped structure and comprises a positioning portion located on the inner ring and a sealing portion located on the outer ring, two first auxiliary sealing rings are respectively arranged on two sides of the positioning portion, which are in contact with the butterfly plate and the pressing plate, and two first auxiliary sealing rings are respectively arranged on two sides of the sealing portion, which are in contact with the butterfly plate and the pressing plate.
Preferably, a groove is formed in one side of the butterfly plate, the pressing plate is installed in the groove of the butterfly plate through a plurality of bolts, a clamping groove used for installing a sealing ring is formed between the pressing plate and the butterfly plate, the clamping groove is communicated with the second drainage hole, anti-falling grooves are formed in two sides of the clamping groove, the positioning portion is clamped in the anti-falling grooves, and the outer ring of the sealing portion extends out of the clamping groove and is matched and sealed with the valve seat.
Preferably, the seal ring is stamped from thin-walled stainless steel.
Preferably, the top end of the first drainage hole is sealed by a plug; and a second drainage hole in the butterfly plate is of a Y-shaped structure, one end of the second drainage hole is communicated with the groove in the bottom of the sealing ring, and the other end of the second drainage hole is sealed by a plug.
Preferably, the upper part and the lower part of the first drainage groove and the second drainage groove are respectively provided with a second auxiliary sealing ring.
The utility model has the beneficial effects that: the metal sealing ring can be completely separated from the valve seat in the opening and closing processes of the eccentric butterfly valve, so that excessive extrusion of the sealing ring is effectively avoided in the using process, the sealing surface is prevented from being damaged, and the effective period of the sealing surface is greatly prolonged; the compression amount of the sealing ring with the structure is close to 0 in the opening and closing process, so the maximum operation torque of the valve is greatly reduced. Meanwhile, bidirectional isobaric sealing can be realized, the sealing is reliable, and the service life is long.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic cross-sectional structure diagram of a novel metal hard seal eccentric butterfly valve with flange connection according to the present invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
fig. 3 is an enlarged schematic view of a portion a of fig. 1.
[ detailed description ] embodiments
Referring to fig. 1 to 3, the novel flange connection metal hard seal eccentric butterfly valve comprises a main valve part and a piping part, wherein the piping part and the main valve part form a complete control loop, the main valve part comprises a valve body 1, a butterfly plate 2, a valve seat 6 and a valve rod, the valve seat 6 is arranged in the valve body 1, the butterfly plate 2 is rotatably arranged on the valve seat 6 of the valve body 1 through a lower shaft of the valve rod, the main valve part further comprises a pressing plate 3 and a sealing ring 4, the pressing plate 3 is arranged on one side of the butterfly plate 2, and the sealing ring 4 for sealing the valve seat 6 is arranged between the pressing plate 3 and the butterfly plate 2; the pipe distribution part comprises an A connecting pipe 7, a B connecting pipe 8, a pressure reversing valve 9, a two-position three-way ball valve 10 and a pressure guide pipe 11, wherein the pressure reversing valve 9 is provided with three interfaces, two interfaces in the same direction are respectively connected with a first pressure sensing hole 101 and a second pressure sensing hole 102 on two side surfaces of the valve body 1 through the A connecting pipe 7 and the B connecting pipe 8, the rest one interface is connected with the two-position three-way ball valve 10, one interface in the other two interfaces of the two-position three-way ball valve 10 is communicated with a third pressure sensing hole 103 at the upper shaft end of the valve body 1 through the pressure guide pipe 11, and the other interface is communicated with the atmosphere through a hose; the upper shaft 12 of the valve rod is provided with a first drainage groove 121 and a second drainage groove 122 at the parts matched with the valve body 1 and the butterfly plate 2 respectively, and is communicated with the first drainage hole 120 in the upper shaft 12, the first drainage groove 121 and the second drainage groove 122 are communicated with a third pressure sensing hole 103 in the valve body 1 and a second drainage hole 23 in the butterfly plate 2 respectively, the sealing ring 4 is of a hollow structure, the inner ring of the sealing ring 4 is provided with a notch 411 communicated with an inner cavity of the sealing ring 4, and the second drainage hole 23 is communicated with the inner cavity of the sealing ring 4 through the notch 411.
Further, the section of the seal ring 4 is of a T-shaped structure, and includes a positioning portion 41 located in the inner ring and a sealing portion 42 located in the outer ring, two sides of the positioning portion 41, which are in contact with the butterfly plate 2 and the pressing plate 3, are respectively provided with a first auxiliary seal ring 43, two sides of the sealing portion 42, which are in contact with the butterfly plate 2 and the pressing plate 3, are respectively provided with a first auxiliary seal ring 43, so that the medium leakage is prevented. In the embodiment, the sealing ring 4 is made of thin-walled stainless steel stamping, and the hollow structure enables the sealing ring to have good elasticity.
Further, one side of butterfly plate 2 is seted up flutedly 21, clamp plate 3 is installed in the flutedly 21 of butterfly plate 2 through a plurality of bolt 5, form the draw-in groove 22 that is used for installing sealing washer 4 between clamp plate 3 and the butterfly plate 2, draw-in groove 22 is linked together with second drainage hole 23, the both sides of draw-in groove 22 are equipped with anticreep recess 220, location portion 41 clamps in anticreep recess 220, the outside of draw-in groove 22 is stretched out in the outer lane of sealing 42 and the cooperation of disk seat 6 is sealed, the tip of sealing 42 has the arcwall face.
Further, the top end of the first drainage hole 120 is sealed by a plug 13 to prevent the medium from leaking; and a second drainage hole 23 in the butterfly plate 2 is of a Y-shaped structure, one end of the second drainage hole is communicated with the groove 411 in the bottom of the sealing ring 4, and the other end of the second drainage hole is sealed by a plug 13.
Furthermore, a second auxiliary sealing ring 123 is respectively arranged above and below the first drainage groove 121 and the second drainage groove 122, so that the medium is prevented from leaking inwards.
The working process of the utility model is as follows:
during installation, the sealing ring 4 is placed in the groove 21 processed on the butterfly plate 2, then the pressing plate 3 is installed, the bolt 5 is placed in and locked, the pressing plate 3 is fixed on the butterfly plate 2, and the sealing ring 4 is reliably fixed in the clamping groove 22 between the butterfly plate 2 and the pressing plate 3 after the installation is completed.
In the process that the butterfly plate 2 is rotated to open and close the flange connection metal hard sealing eccentric butterfly valve, the two-position three-way ball valve 10 is opened and closed, the rear end of the sealing ring 4 is communicated with the atmosphere at the moment, and the shape of the sealing ring 4 is consistent with that during installation. When the butterfly plate 2 is rotated to the fully closed position, the sealing ring 4 is in contact with the valve seat 6 only but not in compression (the highest point of the sealing ring 4 just contacts the valve seat 6). After the valve is completely closed, the switch of the two-position three-way ball valve 10 is switched to the closed position, the medium with high pressure on the two sides of the A, B pushes the sealing ball of the pressure reversing valve 9 to move towards the side with low pressure, so that the high-pressure medium enters a control loop through the pressure reversing valve 9 and finally reaches the bottom of the sealing ring 4. The sealing ring 4 deforms under the action of medium pressure, the front end of the sealing ring 4 protrudes outwards, the protruding length is related to the medium pressure, and the sealing ring 4 is compressed at the moment to achieve the purpose of sealing. When the valve is opened, the two-position three-way ball valve 10 is switched to an open position, the control loop is decompressed, the sealing ring 4 is restored to the original shape, then the butterfly plate 2 is rotated, and the valve is opened, so that an opening and closing cycle process is completed.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (6)
1. The utility model provides a novel eccentric butterfly valve of flange joint metal hard seal, includes main valve part and piping part, main valve part includes valve body (1), butterfly plate (2), disk seat (6) and valve rod, be equipped with disk seat (6) in valve body (1), the lower axle that butterfly plate (2) passed through the valve rod rotatably sets up on disk seat (6) of valve body (1), its characterized in that: the main valve part also comprises a pressure plate (3) and a sealing ring (4), the pressure plate (3) is arranged on one side of the butterfly plate (2), and the sealing ring (4) for sealing the valve seat (6) is arranged between the pressure plate (3) and the butterfly plate (2); the pipe distribution part comprises an A connection pipe (7), a B connection pipe (8), a pressure reversing valve (9), a two-position three-way ball valve (10) and a pressure guide pipe (11), the pressure reversing valve (9) is provided with three interfaces, two interfaces are respectively connected with a first pressure sensing hole (101) and a second pressure sensing hole (102) on two side surfaces of the valve body (1) through the A connection pipe (7) and the B connection pipe (8), the rest one interface is connected with the two-position three-way ball valve (10), one interface of the other two interfaces of the two-position three-way ball valve (10) is communicated with a third pressure sensing hole (103) on the upper shaft end of the valve body (1) through the pressure guide pipe (11), and the other interface is communicated with the atmosphere through a hose; the upper shaft (12) of valve rod and valve body (1), butterfly plate (2) matched with part are equipped with first drainage groove (121), second drainage groove (122) respectively to be linked together through first drainage hole (120) of upper shaft (12) inside, first drainage groove (121), second drainage groove (122) communicate with third pressure sensing hole (103) on valve body (1), second drainage hole (23) on butterfly plate (2) respectively, sealing washer (4) are hollow structure, and the inner circle of sealing washer (4) has fluting (411) rather than the inside cavity intercommunication, second drainage hole (23) are linked together through fluting (411) and the inside cavity of sealing washer (4).
2. The novel flanged metal hard seal eccentric butterfly valve of claim 1, characterized in that: the cross-section of sealing washer (4) is T font structure, including location portion (41) that are located the inner circle and sealing (42) that are located the outer lane, the both sides that the both sides of location portion (41) and butterfly plate (2), clamp plate (3) contacted respectively are equipped with first auxiliary seal circle (43) one, the both sides that the both sides of sealing (42) and butterfly plate (2), clamp plate (3) contacted respectively are equipped with first auxiliary seal circle (43) one.
3. The novel flanged metal hard seal eccentric butterfly valve of claim 2, characterized in that: one side of butterfly plate (2) is seted up fluted (21), install in recess (21) of butterfly plate (2) through a plurality of bolt (5) clamp plate (3), form draw-in groove (22) that are used for installing sealing washer (4) between clamp plate (3) and butterfly plate (2), draw-in groove (22) are linked together with second drainage hole (23), the both sides of draw-in groove (22) are equipped with anticreep recess (220), location portion (41) clamp in anticreep recess (220), the outer lane of sealing (42) stretches out draw-in groove (22) outside and disk seat (6) cooperation is sealed.
4. The novel flanged metal hard seal eccentric butterfly valve of claim 1, characterized in that: the sealing ring (4) is made of thin-wall stainless steel through stamping.
5. The novel flanged metal hard seal eccentric butterfly valve of claim 1, characterized in that: the top end of the first drainage hole (120) is sealed by a plug (13); and a second drainage hole (23) in the butterfly plate (2) is of a Y-shaped structure, one end of the second drainage hole is communicated with the bottom groove (411) of the sealing ring (4), and the other end of the second drainage hole is sealed by a plug (13).
6. The novel flanged metal hard seal eccentric butterfly valve of claim 1, characterized in that: and a second auxiliary sealing ring (123) is respectively arranged above and below the first drainage groove (121) and the second drainage groove (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121107734.1U CN215567987U (en) | 2021-05-21 | 2021-05-21 | Novel flange joint metal hard seal eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121107734.1U CN215567987U (en) | 2021-05-21 | 2021-05-21 | Novel flange joint metal hard seal eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215567987U true CN215567987U (en) | 2022-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121107734.1U Active CN215567987U (en) | 2021-05-21 | 2021-05-21 | Novel flange joint metal hard seal eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215567987U (en) |
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2021
- 2021-05-21 CN CN202121107734.1U patent/CN215567987U/en active Active
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