CN221170786U - Straight shaft straight plate offset butterfly valve and sealing structure thereof - Google Patents
Straight shaft straight plate offset butterfly valve and sealing structure thereof Download PDFInfo
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- CN221170786U CN221170786U CN202323094488.2U CN202323094488U CN221170786U CN 221170786 U CN221170786 U CN 221170786U CN 202323094488 U CN202323094488 U CN 202323094488U CN 221170786 U CN221170786 U CN 221170786U
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- sealing ring
- valve clack
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- 238000007789 sealing Methods 0.000 title claims abstract description 77
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 45
- 239000010439 graphite Substances 0.000 claims abstract description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910000838 Al alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 3
- 208000013201 Stress fracture Diseases 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Abstract
The application provides a straight-shaft straight-plate offset butterfly valve and a sealing structure thereof, wherein the straight-shaft straight-plate offset butterfly valve comprises a shell 1, a valve clack assembly and a shaft, and the valve clack assembly comprises a graphite sealing ring 2, a pressing plate 3 and a valve clack 4; wherein: the shell 1 is of a shell structure with a through hole in the middle; the valve clack assembly is arranged in the shell, the pressing plate 3 is of an annular structure, the pressing plate 3 is arranged at the upper end of the valve clack 4, and the valve clack 4 and the pressing plate 3 form a groove; the graphite sealing ring 2 is of an annular structure, and the graphite sealing ring 2 is arranged in a groove formed by the valve clack 4 and the pressing plate 3 and is fixed through screws; the side surface of the valve clack 4 is provided with a hole, and the shaft integrally penetrates through the hole on the side surface of the valve clack 4; the shaft is sideways of the sealing plane formed by the flap 4 and the graphite sealing ring 2.
Description
Technical Field
The utility model belongs to the field of butterfly valves, and relates to a straight shaft and straight plate offset butterfly valve and a sealing structure thereof.
Background
The whole sealing form that adopts inclined shaft straight board of traditional butterfly valve structure. The graphite sealing ring is arranged in a groove formed by the valve clack and the pressing plate and is fixed by a screw. The shaft passes through the hole on the valve clack and is fixed with the valve clack through bolts. Because the contact area of the shaft and the valve clack is smaller, the fatigue fracture risk is increased, and materials such as stainless steel with higher hardness are needed, the purpose of light weight is difficult to achieve. The measurement of the external dimension is difficult because the shape of the inclined shaft straight plate is irregular. Meanwhile, the straight shaft and straight plate type butterfly valve has the problems that a sealing plane is provided with a notch and sealing is not tight.
Disclosure of utility model
The purpose of the utility model is that: the utility model provides a straight axle straight board offset butterfly valve and seal structure for axle and valve clack area of contact increase and at the valve clack seal plane's side, reduced fatigue fracture's risk, also solved the butterfly valve seal plane of straight axle straight board form and gapped, sealed not tight problem. Meanwhile, materials with smaller density such as aluminum alloy can be used for processing, the purpose of light weight is achieved, and the butterfly valve is suitable for butterfly valves with larger drift diameters.
The technical scheme of the utility model is as follows:
In a first aspect, the application provides a straight-shaft straight-plate offset butterfly valve, which comprises a shell 1, a valve clack assembly and a shaft, wherein the valve clack assembly comprises a graphite sealing ring 2, a pressing plate 3 and a valve clack 4; wherein:
The shell 1 is of a shell structure with a through hole in the middle; the valve clack assembly is arranged in the shell, the pressing plate 3 is of an annular structure, the pressing plate 3 is arranged at the upper end of the valve clack 4, and the valve clack 4 and the pressing plate 3 form a groove; the graphite sealing ring 2 is of an annular structure, and the graphite sealing ring 2 is arranged in a groove formed by the valve clack 4 and the pressing plate 3 and is fixed through screws; the side surface of the valve clack 4 is provided with a hole, and the shaft integrally penetrates through the hole on the side surface of the valve clack 4; the shaft is sideways of the sealing plane formed by the flap 4 and the graphite sealing ring 2.
Further, the contact position between the inner surface of the shell 1 and the graphite sealing ring 2 is an inclined plane, and the included angle between the inclined plane and the axial line of the diameter of the shell 1 is 8-10 degrees.
Further, the graphite sealing ring 2 has an outer diameter Φd larger than an inner diameter of the housing 1 when the graphite sealing ring 2 is in a free state.
Further, a gap is formed in the circumferential direction of the graphite sealing ring 2, the length of the gap is L, and when the graphite sealing ring 2 is in a free state, the length L is more than or equal to 2mm.
Further, the straight line where the shaft is located is parallel to the end face of the valve clack assembly.
Further, the shaft is secured to the valve flap assembly by at least two screws.
Further, the valve clack 4 and the pressing plate 3 are made of aluminum alloy materials.
In a second aspect, the present application provides a straight shaft straight plate offset butterfly valve sealing structure, where the straight shaft straight plate offset butterfly valve sealing structure is applied to the straight shaft straight plate offset butterfly valve; the straight shaft straight plate offset butterfly valve sealing structure comprises a graphite sealing ring 2 which is of an annular structure, wherein the graphite sealing ring 2 is arranged in a groove formed by a valve clack 4 and a pressing plate 3 and is fixed through screws.
The application has the beneficial effects that: the application provides a straight shaft and straight plate offset butterfly valve, wherein a shaft integrally penetrates through a hole on the side surface of a valve clack, the contact area is large, the risk of fatigue fracture can be reduced, and the butterfly valve can be processed by using materials with small density such as aluminum alloy, so that the purpose of light weight is achieved, and the butterfly valve is suitable for butterfly valves with large drift diameters. Meanwhile, the shaft is arranged on the side face of the sealing plane of the valve clack, so that the valve clack is not provided with a notch on the sealing plane, and the problem that the straight shaft straight plate butterfly valve is not tightly sealed is solved. The inner wall of the shell is provided with an inclined plane, and the roughness requirement of the inclined plane part of the inner wall of the shell contacted with the graphite sealing ring is improved, so that the sealing performance is further improved. The butterfly valve is regular in overall shape, and the measuring of the outline dimension is convenient.
Drawings
FIG. 1 is a schematic diagram of a straight shaft straight plate offset butterfly valve according to the present utility model
FIG. 2 is a schematic view of a graphite seal ring provided by the present utility model;
Wherein, 1-casing, 2-graphite sealing ring, 3-clamp plate, 4-valve clack.
Detailed Description
1-2, The application provides a straight shaft and straight plate offset butterfly valve, which comprises a shell 1, a valve clack assembly and a shaft, wherein the valve clack assembly comprises a graphite sealing ring 2, a pressing plate 3 and a valve clack 4; wherein:
The shell 1 is of a shell structure with a through hole in the middle; the valve clack assembly is arranged in the shell, the pressing plate 3 is of an annular structure, the pressing plate 3 is arranged at the upper end of the valve clack 4, and the valve clack 4 and the pressing plate 3 form a groove; the graphite sealing ring 2 is of an annular structure, and the graphite sealing ring 2 is arranged in a groove formed by the valve clack 4 and the pressing plate 3 and is fixed through screws; the side surface of the valve clack 4 is provided with a hole, and the shaft integrally penetrates through the hole on the side surface of the valve clack 4; the shaft is sideways of the sealing plane formed by the flap 4 and the graphite sealing ring 2.
Further, the contact position between the inner surface of the shell 1 and the graphite sealing ring 2 is an inclined plane, and the included angle between the inclined plane and the axial line of the diameter of the shell 1 is 8-10 degrees.
Further, the graphite sealing ring 2 has an outer diameter Φd larger than an inner diameter of the housing 1 when the graphite sealing ring 2 is in a free state.
Further, a gap is formed in the circumferential direction of the graphite sealing ring 2, the length of the gap is L, and when the graphite sealing ring 2 is in a free state, the length L is more than or equal to 2mm.
Further, the straight line where the shaft is located is parallel to the end face of the valve clack assembly.
Further, the shaft is secured to the valve flap assembly by at least two screws.
Further, the valve clack 4 and the pressing plate 3 are made of aluminum alloy materials.
It should be noted that, the inner wall of the casing 1 has an inclined plane, which can improve the roughness requirement of the inclined plane portion of the inner wall of the casing 1 where the casing 1 contacts with the graphite sealing ring 2, and further improve the sealing performance.
It should be noted that, after the graphite sealing ring wears, the graphite sealing ring can be outwards expanded under the action of self tension to realize automatic compensation, so that the sealing reliability in the use process is improved.
The shaft is arranged on the side surface of the sealing plane of the valve clack 4, so that the valve clack 4 is not provided with a gap on the sealing plane, and the problem of loose sealing of the straight-shaft straight-plate butterfly valve is solved.
The contact area between the shaft and the valve clack 4 is large, the risk of fatigue fracture can be reduced, and the valve clack can be processed by using materials with small density such as aluminum alloy, so that the purpose of light weight is achieved, and the valve clack is suitable for butterfly valves with large drift diameters.
The butterfly valve is regular in overall shape, and is convenient for measuring the outline dimension.
It should be noted that the shaft is firmly connected to the valve flap assembly, and the two screws can disperse the stress points.
The whole structure adopts a sealing mode of a straight shaft and straight plate offset type.
The shaft integrally penetrates through the hole on the side face of the valve clack, so that the contact area is large, and the risk of fatigue fracture can be reduced.
The butterfly valve can be manufactured by using a material having a small density such as an aluminum alloy, and is suitable for butterfly valves having a large diameter, and can achieve the purpose of reducing the weight.
The shaft is arranged on the side surface of the sealing plane of the valve clack, so that the valve clack is not provided with a gap on the sealing plane, and the problem of loose sealing of the straight-shaft straight-plate butterfly valve is solved.
In addition, the application provides a straight shaft straight plate offset butterfly valve sealing structure, which is applied to the straight shaft straight plate offset butterfly valve; the straight shaft straight plate offset butterfly valve sealing structure comprises a graphite sealing ring 2 which is of an annular structure, wherein the graphite sealing ring 2 is arranged in a groove formed by a valve clack 4 and a pressing plate 3 and is fixed through screws.
The utility model relates to a straight shaft and straight plate offset butterfly valve and a sealing structure thereof, which mainly comprise a shell, a shaft, a valve clack, a pressing plate, a graphite sealing ring and other parts. The shaft integrally penetrates through the hole in the side face of the valve clack, the contact area is large, the fatigue fracture risk can be reduced, and the shaft can be processed by using materials with small density such as aluminum alloy, so that the purpose of light weight is achieved, and the shaft is suitable for butterfly valves with large drift diameters. Meanwhile, the shaft is arranged on the side face of the sealing plane of the valve clack, so that the valve clack is not provided with a notch on the sealing plane, and the problem that the straight shaft straight plate butterfly valve is not tightly sealed is solved. The inner wall of the shell is provided with an inclined plane, and the roughness requirement of the inclined plane part of the inner wall of the shell contacted with the graphite sealing ring is improved, so that the sealing performance is further improved. The butterfly valve is regular in overall shape, and the measuring of the outline dimension is convenient.
Claims (8)
1. The straight-shaft straight-plate offset butterfly valve is characterized by comprising a shell (1), a valve clack assembly and a shaft, wherein the valve clack assembly comprises a graphite sealing ring (2), a pressing plate (3) and a valve clack (4); wherein:
The shell (1) is of a shell structure with a through hole in the middle; the valve clack assembly is arranged in the shell, the pressure plate (3) is of an annular structure, the pressure plate (3) is arranged at the upper end of the valve clack (4), and the valve clack (4) and the pressure plate (3) form a groove; the graphite sealing ring (2) is of an annular structure, and the graphite sealing ring (2) is arranged in a groove formed by the valve clack (4) and the pressing plate (3) and is fixed by a screw; the side surface of the valve clack (4) is provided with a hole, and the shaft integrally penetrates through the hole on the side surface of the valve clack (4); the shaft is located on the side of the sealing plane formed by the valve flap (4) and the graphite sealing ring (2).
2. The straight shaft and straight plate offset butterfly valve according to claim 1, characterized in that the contact position of the inner surface of the housing (1) with the graphite sealing ring (2) is an inclined plane, and the inclined plane and the diameter axis of the housing (1) have an included angle ranging from 8 ° - (1) 0 °.
3. The straight shaft straight plate offset butterfly valve according to claim 1, characterized in that the graphite sealing ring (2) has an outer diameter Φd in the free state, which is larger than the inner diameter of the housing (1).
4. The straight shaft and straight plate offset butterfly valve according to claim 1, wherein a gap is formed in the circumferential direction of the graphite sealing ring (2), the gap is L in length, and the length L is greater than or equal to (2) mm when the graphite sealing ring (2) is in a free state.
5. The straight axis, straight plate offset butterfly valve of claim 1, wherein the axis is in a line parallel to an end surface of the valve flap assembly.
6. The straight shaft straight plate offset butterfly valve of claim 1, wherein the shaft and the valve flap assembly are secured by at least two screws.
7. The straight shaft straight plate offset butterfly valve according to claim 1, characterized in that the valve flap (4) and the pressure plate (3) are machined from an aluminium alloy material.
8. A straight shaft straight plate offset butterfly valve seal structure, characterized in that the straight shaft straight plate offset butterfly valve seal structure is applied to the straight shaft straight plate offset butterfly valve of any one of claims 1-7; the straight shaft straight plate offset butterfly valve sealing structure comprises a graphite sealing ring (2) which is of an annular structure, wherein the graphite sealing ring (2) is arranged in a groove formed by a valve clack (4) and a pressing plate (3) and is fixed through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323094488.2U CN221170786U (en) | 2023-11-15 | 2023-11-15 | Straight shaft straight plate offset butterfly valve and sealing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323094488.2U CN221170786U (en) | 2023-11-15 | 2023-11-15 | Straight shaft straight plate offset butterfly valve and sealing structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221170786U true CN221170786U (en) | 2024-06-18 |
Family
ID=91440386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323094488.2U Active CN221170786U (en) | 2023-11-15 | 2023-11-15 | Straight shaft straight plate offset butterfly valve and sealing structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221170786U (en) |
-
2023
- 2023-11-15 CN CN202323094488.2U patent/CN221170786U/en active Active
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