CN216590003U - Two-way metal hard seal butterfly valve - Google Patents
Two-way metal hard seal butterfly valve Download PDFInfo
- Publication number
- CN216590003U CN216590003U CN202122927930.XU CN202122927930U CN216590003U CN 216590003 U CN216590003 U CN 216590003U CN 202122927930 U CN202122927930 U CN 202122927930U CN 216590003 U CN216590003 U CN 216590003U
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- valve body
- sealing ring
- ring
- valve
- butterfly plate
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Abstract
The utility model discloses a bidirectional metal hard seal butterfly valve, which comprises a valve body, wherein one side of the valve body is provided with a water inlet, the other opposite side is provided with a water outlet, a valve rod is rotatably arranged on the valve body, a butterfly plate is arranged on the valve rod positioned in the valve body, a butterfly plate sealing ring is arranged on the outer circumference of the butterfly plate through a sealing ring pressing plate and a pressing plate screw, a valve body sealing ring matched with the butterfly plate sealing ring is arranged on the inner circle of the valve body, a limit boss used for blocking the circumferential direction of the valve body sealing ring is formed on one side of the inner circumference of the valve body, which is close to the water outlet, a limit retaining ring used for blocking the valve body sealing ring is fixedly arranged on one side of the inner circumference of the valve body, the valve body sealing ring is positioned between the limit boss and the limit retaining ring, the valve body sealing ring can slide along the axis of the valve body between the limit boss and the limit retaining ring, and reverse pressure springs with one ends abutting against the valve body sealing ring are arranged at intervals along the circumferential direction of the limit boss, the utility model can achieve good reverse sealing effect.
Description
Technical Field
The utility model relates to a metal hard seal butterfly valve, in particular to a bidirectional metal hard seal butterfly valve.
Background
The bidirectional metal hard seal butterfly valve in the prior art is provided with a valve body, wherein one side of the valve body is a water inlet, the opposite side of the valve body is a water outlet, the pressure generated by water at the side of the water inlet is forward pressure, the pressure generated by water at the side of the water outlet is reverse pressure, a valve rod is rotatably arranged on the valve body, a butterfly plate is arranged on the valve rod in the valve body, a butterfly plate seal ring is arranged on the outer circumference of the butterfly plate through a seal ring press plate and a press plate screw, a valve body seal ring matched with the butterfly plate seal ring is arranged on the inner circle of the valve body, and the valve body seal ring and the butterfly plate seal ring are in seal fit through a conical surface on the seal ring when the valve is closed.
According to the bidirectional metal hard seal butterfly valve in the prior art, the valve body sealing ring is fixed on the inner circumference of the valve body, and the valve body sealing ring and the butterfly plate sealing ring are well matched during forward sealing to form good sealing. However, when reverse pressure is generated on one side of the water outlet, the conical sealing surface of the butterfly plate sealing ring can deviate from one side of the water inlet to generate micro deformation under the action of water pressure, certain leakage is caused, and sealing failure is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a bidirectional metal hard seal butterfly valve with good sealing effect when the butterfly valve is subjected to reverse pressure.
In order to solve the technical problem, the utility model provides a bidirectional metal hard seal butterfly valve, which comprises a valve body, wherein one side of the valve body is provided with a water inlet, the other opposite side of the valve body is provided with a water outlet, a valve rod is rotatably arranged on the valve body, a butterfly plate is arranged on the valve rod positioned in the valve body, a butterfly plate seal ring is arranged on the outer circumference of the butterfly plate through a seal ring press plate and a press plate screw, and a valve body seal ring matched with the butterfly plate seal ring is arranged on the inner circle of the valve body, and the bidirectional metal hard seal butterfly valve is characterized in that: the valve body sealing ring is positioned between the limiting boss and the limiting check ring, the valve body sealing ring can slide along the axis of the valve body between the limiting boss and the limiting check ring, and reverse pressure springs with one ends abutting against the valve body sealing ring are arranged at intervals along the circumferential direction of the limiting boss.
As an improvement of the utility model, a circumferential sealing ring groove is formed in the outer circumference of the valve body sealing ring, and a first rubber sealing ring is arranged in the sealing ring groove and used for forming sealing fit between the valve body sealing ring and the inner circumferential surface of the valve body; the side face, opposite to the limiting check ring, of the valve body sealing ring is provided with a side face circumferential groove, and a second rubber sealing ring is arranged in the side face circumferential groove and used for forming sealing fit between the valve body sealing ring and the limiting check ring.
As a further improvement of the utility model, sealing specific pressure adjusting screws with one ends abutting against the valve body sealing ring are arranged along the circumferential direction of the limiting boss at intervals, and the sealing specific pressure between the butterfly plate sealing ring and the valve body sealing ring can be adjusted by rotating the sealing specific pressure adjusting screws.
By adopting the bidirectional metal hard seal butterfly valve with the structure, when reverse pressure is generated on one side of the water outlet and the conical sealing surface of the butterfly plate sealing ring generates micro deformation towards one side of the water inlet under the action of water pressure, the valve body sealing ring also generates micro sliding towards one side of the water inlet correspondingly under the action of the reverse pressure, and a good reverse sealing effect can still be obtained; after the first rubber sealing ring and the second rubber sealing ring are arranged, the valve body sealing ring is in good sealing fit with the inner circumferential surface of the valve body and the limiting check ring; after the sealing specific pressure adjusting screw is arranged, when the sealing surface of the valve body sealing ring matched with the butterfly plate sealing ring is abraded, the valve body sealing ring can slide towards one side of the water inlet by adjusting the sealing specific pressure adjusting screw, so that the sealing specific pressure between the valve body sealing ring and the butterfly plate sealing ring is increased, a good sealing effect is achieved, and the purpose of prolonging the service life of the valve body sealing ring can be achieved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic cross-sectional view of a bidirectional metal hard seal butterfly valve according to the present invention.
Fig. 2 is an enlarged view of the structure at I in fig. 1.
Fig. 3 is the view of fig. 2 with the first and second rubber seal rings removed.
Fig. 4 is an enlarged view of the structure at I in fig. 1, and only the first and second rubber seal rings are labeled.
FIG. 5 is an enlarged view of the structure at I in FIG. 1, which shows the structure when one end of the seal specific pressure adjusting screw abuts against the sealing ring of the valve body.
Detailed Description
Referring to fig. 1-5, the utility model relates to a bidirectional metal hard seal butterfly valve, which comprises a valve body 1, wherein one side of the valve body is provided with a water inlet 2, the other opposite side of the valve body is provided with a water outlet 3, the pressure generated by water at the water inlet side is positive pressure, the pressure generated by water at the water outlet side is reverse pressure, a valve rod 4 is rotatably arranged on the valve body, a butterfly plate 5 is arranged on the valve rod positioned in the valve body, a butterfly plate seal ring 8 is arranged on the outer circumference of the butterfly plate through a seal ring press plate 6 and a press plate screw 7, a valve body seal ring 9 matched with the butterfly plate seal ring is arranged on the inner circle of the valve body, and the valve body seal ring and the butterfly plate seal ring are in seal fit through a conical surface on the seal ring when the valve is closed, and is characterized in that: the valve body is characterized in that a limiting boss 10 used for blocking the circumferential direction of the valve body sealing ring is formed on one side of the inner circumference of the valve body, which is close to the water outlet 3, a limiting check ring 11 used for blocking the valve body sealing ring is fixedly arranged on one side of the inner circumference of the valve body, which is close to the water inlet 2, the valve body sealing ring 9 is positioned between the limiting boss 10 and the limiting check ring 11, the valve body sealing ring can slide along the axis of the valve body between the limiting boss and the limiting check ring, and reverse pressure springs 12 with one ends abutting against the valve body sealing ring are arranged at intervals along the circumferential direction of the limiting boss. A circumferential sealing ring groove 13 is formed in the outer circumference of the valve body sealing ring 9, and a first rubber sealing ring 14 is arranged in the sealing ring groove and used for forming sealing fit between the valve body sealing ring and the inner circumferential surface of the valve body; the side face, opposite to the limiting retainer ring 11, of the valve body sealing ring 9 is provided with a side face circumferential groove 15, and a second rubber sealing ring 16 is arranged in the side face circumferential groove and used for forming sealing fit between the valve body sealing ring and the limiting retainer ring. And sealing specific pressure adjusting screws 17 with one ends abutting against the valve body sealing ring are arranged at intervals along the circumferential direction of the limiting boss 10, and the sealing specific pressure between the butterfly plate sealing ring 8 and the valve body sealing ring 9 can be adjusted by rotating the sealing specific pressure adjusting screws.
Claims (1)
1. The utility model provides a two-way metal butterfly valve sealed firmly, has valve body (1), and one side of valve body is water inlet (2), relative opposite side is delivery port (3), rotationally is equipped with valve rod (4) on the valve body, is located and is equipped with butterfly plate (5) on the valve rod in the valve body, is equipped with butterfly plate sealing washer (8) through sealing washer clamp plate (6), clamp plate screw (7) on the outer circumference of butterfly plate, be equipped with on the interior circle of valve body with butterfly plate sealing washer matched with valve body sealing washer (9), its characterized in that: a limiting boss (10) used for blocking the circumferential direction of the valve body sealing ring is formed on one side of the inner circumference of the valve body, which is close to the water outlet (3), a limiting check ring (11) used for blocking the valve body sealing ring is fixedly arranged on one side of the inner circumference of the valve body, which is close to the water inlet (2), the valve body sealing ring (9) is positioned between the limiting boss (10) and the limiting check ring (11), the valve body sealing ring can slide along the axis of the valve body between the limiting boss and the limiting check ring, and reverse pressure springs (12) with one ends abutting against the valve body sealing ring are arranged at intervals along the circumferential direction of the limiting boss; a circumferential sealing ring groove (13) is formed in the outer circumference of the valve body sealing ring (9), and a first rubber sealing ring (14) is arranged in the sealing ring groove and used for forming sealing fit between the valve body sealing ring and the inner circumferential surface of the valve body; side circumferential groove (15) have been seted up to the side that valve body sealing washer (9) are relative with spacing retaining ring (11), are equipped with second rubber seal (16) in the side circumferential groove for form sealed cooperation between valve body sealing washer and spacing retaining ring, follow the circumference of spacing boss (10) is still equipped with the one end at the interval and is supported and lean on sealed specific pressure adjusting screw (17) on the valve body sealing washer, rotates the adjustable butterfly plate sealing washer of this sealed specific pressure adjusting screw (8) and the sealed specific pressure between valve body sealing washer (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122927930.XU CN216590003U (en) | 2021-11-26 | 2021-11-26 | Two-way metal hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122927930.XU CN216590003U (en) | 2021-11-26 | 2021-11-26 | Two-way metal hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216590003U true CN216590003U (en) | 2022-05-24 |
Family
ID=81648949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122927930.XU Active CN216590003U (en) | 2021-11-26 | 2021-11-26 | Two-way metal hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216590003U (en) |
-
2021
- 2021-11-26 CN CN202122927930.XU patent/CN216590003U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |