CN208793652U - A kind of sealing structure of nonmetallic three-eccentric-butterfly-valve - Google Patents
A kind of sealing structure of nonmetallic three-eccentric-butterfly-valve Download PDFInfo
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- CN208793652U CN208793652U CN201821334669.4U CN201821334669U CN208793652U CN 208793652 U CN208793652 U CN 208793652U CN 201821334669 U CN201821334669 U CN 201821334669U CN 208793652 U CN208793652 U CN 208793652U
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- valve seat
- valve
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- butterfly
- spring
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Abstract
A kind of sealing structure of nonmetallic three-eccentric-butterfly-valve, including butterfly plate and valve seat, butterfly plate and valve base sealing cooperatively form sealing pair, valve seat is fixed on valve body by pressing plate, pressing plate is equipped with limited step, the limiting section of valve seat is installed in limited step, and spring is set between valve seat and pressing plate, spring provides the pretightning force between valve seat and butterfly plate, the sealing surface that valve seat is in contact with valve body, which is set, opens up tooth form waterline slot, the sealing surface that valve seat is in contact with butterfly plate opens up tooth form waterline slot, and the material of valve seat is PTFE nonmetallic materials.The beneficial effects of the utility model are: in the long-term use, the spring force of spring can compensate the abrasion of sealing surface of seat, guarantee reliable sealing, while in the tooth form waterline slot inside medium osmosis to sealing surface, labyrinth sealing action is formed, the sealability of valve is enhanced.
Description
Technical field
The utility model relates to the sealing structures of a kind of butterfly valve, especially three-eccentric-butterfly-valve.
Background technique
Three-eccentric-butterfly-valve is widely used on the industrial pipelines such as metallurgy, electric power, petrochemical industry, as adjusting flow and truncation
Fluid uses, and existing three-eccentric-butterfly-valve uses PTFE valve seat, and sealing is formed between butterfly plate and valve body, and surface is smooth between sealing surface,
In the long-term use, butterfly plate and valve seat rub for a long time, cause to wear, to influence the sealing performance of valve.
Summary of the invention
The shortcomings that in order to overcome existing sealing structure, the utility model provide a kind of the close of the three-eccentric-butterfly-valve of sealed reliable
Seal structure.
Technical solution adopted by the utility model to solve its technical problems is a kind of sealings of nonmetallic three-eccentric-butterfly-valve
Structure, including butterfly plate and valve seat, butterfly plate and valve base sealing cooperatively form sealing pair, and valve seat is fixed on valve body by pressing plate, pressure
Plate is equipped with limited step, and the limiting section of valve seat is installed in limited step, and spring is arranged between valve seat and pressing plate, and spring mentions
For the pretightning force between valve seat and butterfly plate, the sealing surface that valve seat is in contact with valve body, which is set, opens up tooth form waterline slot, valve seat and butterfly plate
The sealing surface being in contact opens up tooth form waterline slot, and the material of valve seat is PTFE nonmetallic materials.
The beneficial effects of the utility model are: in the long-term use, the spring force of spring can compensate valve base sealing
The abrasion in face guarantees reliable sealing, while in the tooth form waterline slot in medium osmosis to sealing surface, forming labyrinth sealing action,
Enhance the sealability of valve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment.
In figure: 1. valve bodies；2. pressing plate；3. butterfly plate；4. spring；5. valve seat；6. tooth form waterline slot；7. limiting stand
Rank；8. limiting section.
Specific embodiment
As shown in Figure 1, a kind of sealing structure of nonmetallic three-eccentric-butterfly-valve, including butterfly plate 3 and valve seat 5, butterfly plate 3 and valve seat
5 sealings cooperatively form sealing pair, and valve seat 5 is fixed on valve body 1 by pressing plate, and pressing plate 2 is equipped with limited step 7, the limit of valve seat 5
Position portion 8 is installed in limited step 7, and spring 4 is arranged between valve seat 5 and pressing plate 2, and spring 4 is provided between valve seat 5 and butterfly plate 3
Pretightning force, the sealing surface that valve seat 5 is in contact with valve body 1, which is set, opens up tooth form waterline slot 6, the sealing that valve seat 5 is in contact with butterfly plate 3
Face opens up tooth form waterline slot 6, and the material of valve seat 5 is PTFE nonmetallic materials.
Claims (1)
1. a kind of sealing structure of nonmetallic three-eccentric-butterfly-valve, including butterfly plate and valve seat, butterfly plate cooperatively form close with valve base sealing
Envelope is secondary, it is characterised in that: the valve seat is fixed on valve body by pressing plate, and pressing plate is equipped with limited step, the limit of the valve seat
Position portion is installed in limited step, and spring is arranged between valve seat and pressing plate, and spring provides the pretightning force between valve seat and butterfly plate,
The sealing surface that the valve seat is in contact with valve body, which is set, opens up tooth form waterline slot, and the sealing surface that valve seat is in contact with butterfly plate opens up tooth form
Waterline slot, the material of valve seat are PTFE nonmetallic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821334669.4U CN208793652U (en) | 2018-08-20 | 2018-08-20 | A kind of sealing structure of nonmetallic three-eccentric-butterfly-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821334669.4U CN208793652U (en) | 2018-08-20 | 2018-08-20 | A kind of sealing structure of nonmetallic three-eccentric-butterfly-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208793652U true CN208793652U (en) | 2019-04-26 |
Family
ID=66205925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821334669.4U Active CN208793652U (en) | 2018-08-20 | 2018-08-20 | A kind of sealing structure of nonmetallic three-eccentric-butterfly-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208793652U (en) |
-
2018
- 2018-08-20 CN CN201821334669.4U patent/CN208793652U/en active Active
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