CN218913780U - High-performance double-eccentric butterfly valve - Google Patents
High-performance double-eccentric butterfly valve Download PDFInfo
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- CN218913780U CN218913780U CN202222743232.9U CN202222743232U CN218913780U CN 218913780 U CN218913780 U CN 218913780U CN 202222743232 U CN202222743232 U CN 202222743232U CN 218913780 U CN218913780 U CN 218913780U
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- elastic
- valve seat
- sealing ring
- butterfly
- elastic sealing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model discloses a high-performance double-eccentric butterfly valve, relates to the field of valves, and solves the problem that elastic sealing of a valve seat is not suitable for a working environment with high pressure and high requirement. The butterfly valve comprises an elastic valve seat and a butterfly plate, wherein an elastic sealing ring made of elastic metal is arranged on the butterfly plate, the cross section of the elastic sealing ring is C-shaped, an inclined cambered surface is formed on the outer side surface of the elastic sealing ring, which is close to the elastic valve seat, and the inclined cambered surface is in sealing fit with the sealing valve seat. The elastic sealing ring is of a C-shaped bending structure, can be better matched with the elastic valve seat in an elastic sealing mode, is made of elastic metal materials, can provide pretightening force required by sealing of the sealing surface of the elastic valve seat by means of self elastic force, has an obvious sealing effect, and can be particularly suitable for use in working environments with high pressure and high requirements, and the application range is enlarged.
Description
Technical Field
The utility model relates to the field of valves, in particular to a high-performance double-eccentric butterfly valve.
Background
The double eccentric butterfly valve is also called as a high-performance butterfly valve, is one of butterfly valves, is further improved on the basis of a single eccentric butterfly valve, and is structurally characterized in that the axis of a valve rod is deviated from the center of a butterfly plate and also from the center of a body, and is mainly suitable for drainage of systems such as water plants, power plants, smelting of steel plants, chemical engineering, water source spring engineering, environmental facility construction and the like. For example, chinese utility model patent: CN201820048432.3, high temperature resistant elastic sealing double eccentric butterfly valve, discloses an elastic sealing valve seat made of elastic metal material, realizing elastic sealing of butterfly valve, so as to enhance sealing performance. However, in some demanding operating scenarios of high pressure media, the elastic sealing by means of the valve seat alone is not sufficient to ensure adequate tightness.
Disclosure of Invention
The purpose of the utility model is that: in order to overcome the defects of the prior art, the utility model provides a high-performance double-eccentric butterfly valve, which solves the problem that the elastic sealing of a valve seat is not suitable for a working environment with high pressure and high requirement.
The technical scheme of the utility model is as follows: the butterfly valve comprises an elastic valve seat and a butterfly plate, wherein an elastic sealing ring made of elastic metal is arranged on the butterfly plate, the cross section of the elastic sealing ring is C-shaped, an inclined cambered surface is formed on the outer side surface of the elastic sealing ring, which is close to the elastic valve seat, and the inclined cambered surface is in sealing fit with the sealing valve seat.
By adopting the technical scheme, the elastic sealing ring is of the C-shaped bending structure, can better realize elastic sealing fit with the elastic valve seat, is made of elastic metal materials, can provide the pretightening force required by sealing the sealing surface of the elastic valve seat by self elastic force, has obvious sealing effect, and can be particularly suitable for the working environment with high pressure and high requirement, and the application range is enlarged.
The utility model is further provided with: the inner side surface of the elastic sealing ring, which is far away from the elastic valve seat, is provided with an inclined conical surface, the butterfly plate is fixedly provided with a pressing plate, a sliding block is arranged between the inclined conical surface, the pressing plate and the butterfly plate, a reset spring is arranged between the bottom surface of the sliding block and the butterfly plate, the pressing plate is in threaded connection with a screw, the tail end of the screw is propped against the top surface of the sliding block, the outer side surface of the sliding block is provided with an inclined sliding surface, and the inclined sliding surface is in staggered fit with the inclined conical surface.
By adopting the further arrangement, the sliding block can be adjusted through screw rotation, the staggered effect of the inclined sliding surface and the inclined conical surface is utilized, and the elastic sealing ring is slightly expanded, so that the pretightening force of the elastic sealing ring is adjusted, the situation that the elastic sealing ring is excessively tightly pressed with the elastic valve seat to cause overlarge opening and closing torque is avoided, the abrasion is reduced, and the service life is prolonged.
Still further, the present utility model provides: the elastic sealing ring is provided with an opening, a limiting block is arranged on the butterfly plate and arranged in the opening, and the limiting block can be respectively in jacking fit with the inclined cambered surface and the inclined conical surface.
By adopting the further arrangement, the movable travel of the elastic sealing ring is limited, and the elastic sealing ring can be pressed against the limiting block when expanding and contracting the limit travel, so that the sealing effectiveness is ensured.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is an enlarged view of a portion of the utility model at A in FIG. 1;
wherein, 1, elastic valve seat; 2. a butterfly plate; 3. an elastic sealing ring; 31. an inclined cambered surface; 32. a sloping conical surface; 4. a pressing plate; 5. a slide block; 41. a screw; 6. a return spring; 51. a sloping slide surface; 33. an opening; 21. and a limiting block.
Detailed Description
The high-performance double-eccentric butterfly valve shown in fig. 1 and 2 comprises an elastic valve seat 1 and a butterfly plate 2, wherein an elastic sealing ring 3 made of an elastic metal material is arranged on the butterfly plate 2, the cross section of the elastic sealing ring 3 passing through a central line is C-shaped, an inclined cambered surface 31 is formed on the outer side surface of the elastic sealing ring 3, which is close to the elastic valve seat 1, and the inclined cambered surface 31 is in sealing fit with a sealing valve seat. Because the elastic sealing ring 3 and the elastic valve seat 1 are made of elastic metal materials, the elastic sealing ring 3 and the elastic valve seat 1 are mutually extruded by the elastic force of the elastic sealing ring to provide the pretightening force required by sealing, and the inclined cambered surface 31 is more closely attached to the inner circular surface of the elastic valve seat 1, so that the sealing can be realized under the working environment of a high-pressure medium. The butterfly valve is a double eccentric butterfly valve, namely, the axis of the valve rod is deviated from the center of the butterfly plate 2 and the center of the valve body, so that the elastic sealing ring 3 can be rapidly separated from the elastic valve seat 1 after the butterfly valve is opened, unnecessary excessive extrusion between the elastic sealing ring 3 and the elastic valve seat 1 is greatly eliminated, and the opening and closing torque is reduced.
The inner side surface of the elastic sealing ring 3, which is far away from the elastic valve seat 1, is provided with an inclined conical surface 32, and the inclined conical surface 32 is a plane which is different from the arc surface of the inclined cambered surface 31; the butterfly plate 2 is fixedly provided with the pressing plate 4, a cavity is formed among the inclined conical surface 32, the pressing plate 4 and the butterfly plate 2, the sliding block 5 is arranged in the cavity, the reset spring 6 is arranged between the bottom surface of the sliding block 5 and the butterfly plate 2, the pressing plate 4 is in threaded connection with the screw 41, the tail end of the screw 41 is propped against the top surface of the sliding block 5, the outer side surface of the sliding block 5 is provided with the inclined sliding surface 51, and the inclined sliding surface 51 is in staggered fit with the inclined conical surface 32. The adjusting screw 41 is rotated, the sliding block 5 can be pushed to move deeply towards the direction of the return spring 6, the inclined sliding surface 51 and the inclined conical surface 32 are mutually pressed and staggered, and the outward expanding acting force of the elastic sealing ring 3 is provided, so that the pretightening force of the elastic sealing ring 3 is adjusted, and therefore, before the butterfly valve is installed on a pipeline, the butterfly valve can be adjusted according to the actual working condition, and the butterfly valve is enough to adapt to the medium environment.
The elastic sealing ring 3 is provided with an opening 33, the butterfly plate 2 is provided with a limiting block 21, the limiting block 21 is arranged in the opening 33, and two side surfaces of the limiting block 21 can be respectively in propping fit with the inclined cambered surface 31 and the inclined conical surface 32. The screw 41 can be adjusted only in the limit stroke range of the limit block 21, when the limit block 21 is in contact with the inclined cambered surface 31 for jacking, the elastic sealing ring 3 is slightly contracted, the inclined cambered surface 31 is not tightly attached to the elastic valve seat 1, the pretightening force is insufficient, leakage can be caused in a high-pressure medium, and the device is applicable to medium environments with medium and low pressure; when the limiting block 21 is in contact with the inclined conical surface 32 for jacking, the elastic sealing ring 3 is slightly expanded, the inclined cambered surface 31 is excessively compressed with the elastic valve seat 1, the pretightening force is excessively high, and the elastic sealing ring 3 and the elastic valve seat 1 possibly rub excessively greatly to cause excessive abrasion. In addition, medium can enter between the opening 33 and the limiting block 21, when the medium reversely enters, the medium pressure presses the inclined cambered surface 31, so that the inclined cambered surface 31 is tightly pressed on the elastic sealing valve seat, and the reverse sealing effect is improved.
Claims (3)
1. The utility model provides a high performance double eccentric butterfly valve, is including elasticity disk seat and butterfly plate, its characterized in that: the butterfly plate is provided with an elastic sealing ring made of elastic metal, the cross section of the elastic sealing ring is C-shaped, the outer side surface of the elastic sealing ring, which is close to the elastic valve seat, forms an inclined cambered surface, and the inclined cambered surface is in sealing fit with the elastic valve seat.
2. The high performance double offset butterfly valve of claim 1, wherein: the inner side surface of the elastic sealing ring, which is far away from the elastic valve seat, is provided with an inclined conical surface, the butterfly plate is fixedly provided with a pressing plate, a sliding block is arranged between the inclined conical surface, the pressing plate and the butterfly plate, a reset spring is arranged between the bottom surface of the sliding block and the butterfly plate, the pressing plate is provided with a screw in a threaded connection manner, the tail end of the screw is propped against the top surface of the sliding block, the outer side surface of the sliding block forms an inclined sliding surface, and the inclined sliding surface is in staggered fit with the inclined conical surface.
3. The high performance double offset butterfly valve of claim 2, wherein: the elastic sealing ring is provided with an opening, a limiting block is arranged on the butterfly plate and arranged in the opening, and the limiting block can be respectively in jacking fit with the inclined cambered surface and the inclined conical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222743232.9U CN218913780U (en) | 2022-10-18 | 2022-10-18 | High-performance double-eccentric butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222743232.9U CN218913780U (en) | 2022-10-18 | 2022-10-18 | High-performance double-eccentric butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218913780U true CN218913780U (en) | 2023-04-25 |
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ID=86039309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222743232.9U Active CN218913780U (en) | 2022-10-18 | 2022-10-18 | High-performance double-eccentric butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218913780U (en) |
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2022
- 2022-10-18 CN CN202222743232.9U patent/CN218913780U/en active Active
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