CN208331271U - Two-way hard seal butterfly valve - Google Patents
Two-way hard seal butterfly valve Download PDFInfo
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- CN208331271U CN208331271U CN201820976271.4U CN201820976271U CN208331271U CN 208331271 U CN208331271 U CN 208331271U CN 201820976271 U CN201820976271 U CN 201820976271U CN 208331271 U CN208331271 U CN 208331271U
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- valve
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- pressure ring
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Abstract
The utility model discloses a kind of two-way hard seal butterfly valves, include valve body, valve seat, butterfly plate and valve rod, sealing ring is installed on butterfly plate, is also equipped with pressing plate on butterfly plate, the inside of sealing ring is pressed on butterfly plate by pressing plate, and the outside of sealing ring is pressed by valve seat to valve core direction；Annular groove, screw and the pressure ring being provided in valve body on valve interior wall, pressure ring boss is provided on the outside of pressure ring, pressure ring boss build-in adapts in annular groove and penetrates pressure ring by screw to press in the axial direction on valve seat, valve body step is additionally provided on valve interior wall, the outside of valve seat is equipped with step groove, and the step groove of valve seat is adapted to valve body step.Sealing ring can be made to keep in the case where reverse pressure-bearing and the leakproofness of valve seat by pressure ring, the movement of certain distance can occur by pressure medium effect for valve seat, and it can be with the enhancing of pressure, valve seat and sealing ring sealing tightness are bigger, to be always ensured that the sealing performance of valve seat and sealing ring.
Description
Technical field
The utility model relates to butterfly valve fields, specifically two-way hard seal butterfly valve.
Background technique
Hard seal butterfly valve is extensive in industrial applications such as petroleum, chemical industry, weaving, power plant, and common hard seal butterfly valve is generally
Unidirectional forced seal structure, the intracorporal sealing surface of seat of valve is fixed on valve body, in reverse pressure-bearing, pipeline medium Fluid pressure
It all acts on dish plate sealing ring, leads to sealing ring seal failure.
Summary of the invention
The purpose of this utility model: in order to overcome the drawbacks of the prior art, the utility model provides a kind of two-way hard close
Sealing butterfly valve solves the problems, such as that it is easy to lose sealing effect in reverse pressure-bearing.
The technical solution of the utility model includes: including valve body, valve seat, butterfly plate and valve rod, it is equipped on the butterfly plate close
Seal is also equipped with pressing plate on the butterfly plate, and the inside of the sealing ring is pressed on the butterfly plate by pressing plate, the sealing
Pressed by valve seat to valve core direction in the outside of circle；Annular groove, screw and the pressure ring being provided in the valve body on valve interior wall,
It is provided with pressure ring boss on the outside of the pressure ring, the pressure ring boss build-in adapts in annular groove and penetrate pressure ring by screw to exist
Axial direction make-up is pressed on valve seat.
By adopting the above technical scheme, sealing ring can be made to keep close with valve seat in the case where reverse pressure-bearing by pressure ring
Feng Xing, it is ensured that the sealing effect of sealing pair.
The further setting of the utility model: being additionally provided with valve body step on valve interior wall, the outside of the valve seat is equipped with
The step groove of step groove, the valve seat is adapted to valve body step and is provided between both gasket, the valve seat and valve
There are gaps between bar.
Using above-mentioned further setting, the movement of certain distance can occur by pressure medium effect for valve seat, and can
With the enhancing of pressure, valve seat and sealing ring sealing tightness are bigger, and the compression resilience of gasket can make valve seat have rebound
Ability, gap ensures to keep at a distance from valve rod in valve seat moving range, to be always ensured that the leakproofness of valve seat and sealing ring
Energy.
The further setting of the utility model: pressure ring is three open loop structures.
Further it is arranged using above-mentioned, is installed in valve body convenient for pressure ring.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model specific embodiment；
Fig. 2 is the schematic enlarged-scale view in the utility model Fig. 1 at A；
Wherein, valve body 1, valve seat 2, butterfly plate 3, valve rod 4, sealing ring 5, pressing plate 6, soket head cap screw 61, annular groove 11, pressure ring 7,
Screw 71, pressure ring boss 72, valve body step 12, gasket 21, gap 22.
Specific embodiment
Two-way hard seal butterfly valve as shown in Figure 1 and Figure 2 includes valve body 1, valve seat 2, butterfly plate 3 and valve rod 4, butterfly plate 1
On sealing ring 5 and pressing plate 6 be installed, the inside of sealing ring 4 is pressed on butterfly plate 1 by pressing plate 4, penetrated on pressing plate 6 in six
Angle screw 61 is threadedly coupled with butterfly plate 1, and the outside of sealing ring 5 is pressed by valve seat 2 to valve core direction, 2 shape of sealing ring 5 and valve seat
At sealing pair；Annular groove 11, screw 71 and the pressure ring 7 being provided on 1 inner wall of valve body in valve body 1, the outside of pressure ring 7 is wholely set
There is pressure ring boss 72, pressure ring boss 72 is embedded in annular groove 11 and is adapted, and penetrates pressure ring 7 in the axial direction by screw 71
Press on valve seat 2.Also there is valve body step 12, the outside of valve seat 2 is equipped with step groove, the step groove of valve seat 2 on 1 inner wall of valve body
Gasket 21 is adapted to and is provided between both with valve body step 12, and there are gaps 22 between valve seat 2 and valve rod 4.When anti-
When to pressure-bearing, valve seat 2 is acted on by pressure medium and is moved a certain distance toward axial direction, valve body step 12 and step groove it is suitable
Effect is pressed to valve seat 2 with effect and pressure ring 7, by the limit of valve seat 2 in suitable moving range, gasket 21 plays close
Envelope effect again make valve seat 2 have rebound ability, gap 22 can prevent it is excessive in 2 displacement process of valve seat press on valve rod 4,
Cause the damage of valve rod 4.
Pressure ring 7 is three open loop structures, includes that 120 ° of three pieces of pressure ring piece is put together, pressure ring 7 is facilitated to be installed to valve body 1
It is interior.
Claims (3)
1. two-way hard seal butterfly valve includes valve body, valve seat, butterfly plate and valve rod, sealing ring is equipped on the butterfly plate, special
Sign is: there are also pressing plates for installation on the butterfly plate, and the inside of the sealing ring is pressed on the butterfly plate by pressing plate, described close
Pressed by valve seat to valve core direction in the outside of seal；Annular groove, screw and the pressure being provided in the valve body on valve interior wall
Ring, pressure ring boss is provided on the outside of the pressure ring, and the pressure ring boss build-in adapts to penetrate pressure in annular groove and by screw
Ring presses in the axial direction on valve seat.
2. two-way hard seal butterfly valve according to claim 1, it is characterised in that: be additionally provided with valve body on the valve interior wall
The outside of step, the valve seat is equipped with step groove, and the step groove of the valve seat is adapted to and between both with valve body step
It is provided with gasket, there are gaps between the valve seat and valve rod.
3. two-way hard seal butterfly valve according to claim 1 or 2, it is characterised in that: the pressure ring is three open loop structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820976271.4U CN208331271U (en) | 2018-06-25 | 2018-06-25 | Two-way hard seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820976271.4U CN208331271U (en) | 2018-06-25 | 2018-06-25 | Two-way hard seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208331271U true CN208331271U (en) | 2019-01-04 |
Family
ID=64769727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820976271.4U Active CN208331271U (en) | 2018-06-25 | 2018-06-25 | Two-way hard seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208331271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375077A (en) * | 2019-07-23 | 2019-10-25 | 四川苏克流体控制设备有限公司 | A kind of forced seal ultralow temperature butterfly valve |
-
2018
- 2018-06-25 CN CN201820976271.4U patent/CN208331271U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375077A (en) * | 2019-07-23 | 2019-10-25 | 四川苏克流体控制设备有限公司 | A kind of forced seal ultralow temperature butterfly valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 323006 No. 87, Tongji street, nanmingshan street, Liandu District, Lishui City, Zhejiang Province Patentee after: ERREESSE VALVE (CHINA) Co.,Ltd. Address before: 323006 No. 1, Bizhong Road, Bihu Industrial Zone, Bihu Town, Liandu District, Lishui City, Zhejiang Province Patentee before: ERREESSE VALVE (CHINA) Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |