CN214500079U - Four eccentric butterfly valve sealing structure - Google Patents
Four eccentric butterfly valve sealing structure Download PDFInfo
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- CN214500079U CN214500079U CN202120701538.0U CN202120701538U CN214500079U CN 214500079 U CN214500079 U CN 214500079U CN 202120701538 U CN202120701538 U CN 202120701538U CN 214500079 U CN214500079 U CN 214500079U
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Abstract
The utility model discloses a four eccentric butterfly valve seal structure, install the valve rod on the valve body and install in the valve body and can be driven pivoted valve plate by the valve rod including valve body, normal running fit, circle has the ring shape sealing of protruding formation in the valve body, the valve plate excircle is provided with ring shape sealing ring, when the valve plate is sealed in the valve body, circle interference seal cooperation in sealing ring excircle and the sealing. The utility model discloses well sealing part and sealing ring are ring structure and the two realizes sealedly through the sealed pair of arc surface, and sealed specific pressure is big, it is little to open and close moment, circle and the sealed pair of sealed face in its sealing ring are the concentric structure, can adopt simple processing equipment to accomplish the manufacturing of sealing ring when maintaining the change, do not need special frock, the commonality is strong, ordinary operating personnel can accomplish the maintenance change work, reduce later maintenance change cycle to reduce the degree of difficulty of later maintenance.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to four eccentric butterfly valve seal structures.
Background
The continuous perfection of present butterfly valve structure, current four eccentric butterfly valve is used by a large amount, the current seal structure of four eccentric butterfly valves adopts the conical surface cooperation sealed usually, this structure makes the structure of sealing ring have the conical surface, it is higher to manufacturing accuracy requirement, it needs special processing equipment and special frock usually, consequently can only be through the customization spare parts of manufacture after the damage of current four eccentric butterfly valve sealing rings, lead to the processing cycle long, it is extremely inconvenient to maintain.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a four eccentric butterfly valve seal structure simplifies seal structure, improves the commonality of sealing ring.
The utility model provides a four eccentric butterfly valve seal structure, install the valve rod on the valve body and install in the valve body and can be by valve rod drive pivoted valve plate, its characterized in that including valve body, normal running fit: the circle has the protruding ring shape sealing of formation in the valve body, the valve plate excircle is provided with ring shape sealing ring, when the valve plate seals in the valve body, sealing ring excircle and the interior round interference seal fit of sealing.
Further, the valve plate excircle is provided with the seal groove, the sealing ring is installed in the seal groove and has the clearance between the interior circle of sealing ring and the seal groove tank bottom.
Further, the seal groove is axially clamped at two axial sides of the seal ring.
Further, the excircle cross-section of sealing ring is the arc surface, sealing portion axial both sides are provided with the guide inclined plane that is used for guiding the sealing ring.
Further, the valve plate includes the valve plate body and connects in the clamping ring of valve plate body axial one side, enclose into the seal groove between valve plate body and the clamping ring axial.
Furthermore, the excircle positions of two axial sides of the valve plate are provided with flow guide inclined planes.
Furthermore, the excircle arc surface axial symmetry of sealing ring, the axial both sides face axial symmetry of sealing ring.
Furthermore, a lateral sealing groove is formed in one side, located on the valve plate body, of the sealing groove, a sealing gasket is installed in the lateral sealing groove, and the pressing ring is laterally pressed on the sealing gasket.
The utility model has the advantages that:
the utility model discloses well sealing part and sealing ring are ring structure and the two realizes sealedly through the sealed pair of arc surface, and sealed specific pressure is big, opening and closing moment is little, and the sealing ring is concentric structure in its interior circle and the sealed pair of sealing face, can adopt simple processing equipment to accomplish the manufacturing of sealing ring when maintaining the change, do not need special frock, and the commonality is strong, and ordinary operating personnel can accomplish the maintenance change work, reduces later maintenance change cycle, and reduces the degree of difficulty of later maintenance; in addition, the excircle and the axial two sides of the sealing ring are of axially symmetrical structures, so that the sealing ring is free of requirements on installation direction during installation, the installation direction is interchangeable, and when the joint surface of the sealing ring and the valve plate body is damaged, the sealing ring can be turned over to replace the other side surface to be jointed with the valve plate body for continuous sealing.
Drawings
The invention is further described with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partially enlarged schematic view of FIG. 1;
Detailed Description
This embodiment provides a four eccentric butterfly valve seal structure, include valve body 1, normal running fit install the valve rod 2 on the valve body and install in the valve body and can be driven pivoted valve plate 3 by the valve rod, circle has protruding ring shape sealing 4 that forms in the valve body, the valve plate excircle is provided with ring shape sealing ring 5, when the valve plate seals in the valve body, the circle interference fit in sealing ring excircle and the sealing. The radial center line of the sealing ring and the axial line of the valve rod are not superposed to form a first eccentricity, the axial line of the valve rod and the radial center line of the valve body are not superposed to form a second eccentricity, the radial center line of the valve body and the radial center line of the valve plate body are not superposed to form a third eccentricity, an included angle is formed between the rotary center line of the sealing part and the center line of the valve flow channel to form a fourth eccentricity, and each eccentric structure of the four-eccentric butterfly valve is the prior art and is not repeated herein; sealing portion and sealing ring are ring structure and the two realizes sealedly through the sealed pair of arc surface, and sealed specific pressure is big, it is little to open and close moment, its interior circle of sealing ring and sealed pair sealed face are the concentric structure, can adopt simple processing equipment to accomplish the manufacturing of sealing ring when maintaining the change, do not need special frock, the commonality is strong, ordinary operating personnel can accomplish the maintenance change work, reduce the later maintenance change cycle to reduce the degree of difficulty of later maintenance.
In this embodiment, the valve plate excircle is provided with seal groove 6, the sealing ring is installed in the seal groove and has clearance 9 between the interior circle of sealing ring and the seal groove tank bottom. The sealing ring adopts elastic materials such as rubber, combines fig. 2 to show, because circle interference fit in sealing ring excircle and the sealing, rotate closed in-process at the valve plate, the sealing ring rotates to the sealing in, and the sealing has radial inward pressure to the sealing ring excircle, establishes through staying in clearance 9, does benefit to the radial inward compression deformation of sealing ring, the valve plate of being convenient for and the cooperation of sealing.
In this embodiment, the sealing groove is axially clamped at two axial sides of the sealing ring. The axial width of seal groove is less than the axial width of sealing ring, does benefit to the stability that improves the sealing ring through axial centre gripping.
In this embodiment, the outer circle cross-section of sealing ring is the arc surface, 4 axial both sides of sealing portion are provided with the guide inclined plane 4a that is used for guiding the sealing ring. Combine fig. 2 to show, be provided with the guide inclined plane of chamfer shape in sealing portion axial both sides, this guide inclined plane cooperation sealing ring's arc surface does benefit to the guide sealing ring and slides and form seal structure in the circle in the sealing portion, and the guide inclined plane can be the plane and also can be the arc surface, specifically does not give unnecessary details.
In this embodiment, the valve plate includes valve plate body 3a and connects in valve plate body axial one side's clamping ring 3b, enclose into the seal groove between valve plate body and the clamping ring axial. Wherein the clamping ring passes through bolt fixed connection on the valve plate body, and the axial inboard of clamping ring is pressed on the sealing ring as one of them lateral wall axial of seal groove moreover, does benefit to the dismantlement and the installation of sealing ring through this structure.
In this embodiment, the excircle department of the axial both sides of valve plate is provided with the water conservancy diversion inclined plane. As shown in the combined drawing 2, a chamfer structure is arranged on one axial side of the valve plate body to form a diversion inclined plane I7 a, a chamfer structure is arranged on one axial side of the pressing ring to form a diversion inclined plane II 7b, and diversion of solution in the valve body is facilitated when the valve plate is opened or closed in a rotating mode through the diversion inclined plane, so that the operability of the valve body is improved.
In this embodiment, the excircle arc surface axial symmetry of sealing ring, the axial both sides face axial symmetry of sealing ring. As shown in fig. 2, the outer circle of the sealing ring and the inner circle of the sealing portion form a seal, and one axial side of the sealing ring and one side of the valve plate body also form a seal, so that the joint face of the sealing ring and the valve plate body is used as a seal face, the outer circle of the sealing ring is a standard arc face, and the two axial side faces of the sealing ring are axially symmetrical seal faces.
In this embodiment, a lateral sealing groove is formed in one side of the valve plate body in the sealing groove, a sealing gasket 8 is installed in the lateral sealing groove, and the pressing ring 3b is laterally pressed on the sealing gasket. The sealing gasket is a rubber gasket and is provided with auxiliary axial sealing.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (8)
1. The utility model provides a four eccentric butterfly valve seal structures, includes that valve body, normal running fit install the valve rod on the valve body and install in the valve body and can be by valve rod drive pivoted valve plate, its characterized in that: the circle has the protruding ring shape sealing of formation in the valve body, the valve plate excircle is provided with ring shape sealing ring, when the valve plate seals in the valve body, sealing ring excircle and the interior circle interference seal fit of sealing.
2. The four eccentric butterfly valve seal configuration of claim 1, wherein: the valve plate excircle is provided with the seal groove, the sealing ring is installed in the seal groove and has the clearance between the interior circle of sealing ring and the seal groove tank bottom.
3. The four eccentric butterfly valve seal configuration of claim 2, wherein: the seal groove is axially clamped at two axial sides of the seal ring.
4. The four eccentric butterfly valve seal configuration of claim 2, wherein: the excircle cross-section of sealing ring is the arc surface, sealing portion axial both sides are provided with the guide inclined plane that is used for guiding the sealing ring.
5. The four eccentric butterfly valve seal configuration of claim 2, wherein: the valve plate comprises a valve plate body and a pressing ring connected to one side of the valve plate body in the axial direction, and a sealing groove is formed between the valve plate body and the pressing ring in the axial direction in a surrounding mode.
6. The four eccentric butterfly valve seal configuration of claim 1, wherein: and flow guide inclined planes are arranged at the outer circles of the two axial sides of the valve plate.
7. The four eccentric butterfly valve seal configuration of claim 4, wherein: the excircle arc surface axial symmetry of sealing ring, the axial both sides face axial symmetry of sealing ring.
8. The seal construction of a four-eccentric butterfly valve according to claim 5, characterized in that: a lateral sealing groove is formed in one side, located on the valve plate body, of the sealing groove, a sealing gasket is installed in the lateral sealing groove, and the pressing ring is laterally pressed on the sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120701538.0U CN214500079U (en) | 2021-04-07 | 2021-04-07 | Four eccentric butterfly valve sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120701538.0U CN214500079U (en) | 2021-04-07 | 2021-04-07 | Four eccentric butterfly valve sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214500079U true CN214500079U (en) | 2021-10-26 |
Family
ID=78202059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120701538.0U Active CN214500079U (en) | 2021-04-07 | 2021-04-07 | Four eccentric butterfly valve sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214500079U (en) |
-
2021
- 2021-04-07 CN CN202120701538.0U patent/CN214500079U/en active Active
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