CN202691085U - Electric metal sealing butterfly valve - Google Patents
Electric metal sealing butterfly valve Download PDFInfo
- Publication number
- CN202691085U CN202691085U CN 201220333992 CN201220333992U CN202691085U CN 202691085 U CN202691085 U CN 202691085U CN 201220333992 CN201220333992 CN 201220333992 CN 201220333992 U CN201220333992 U CN 201220333992U CN 202691085 U CN202691085 U CN 202691085U
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- Prior art keywords
- valve
- valve seat
- butterfly
- valve body
- seat
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- Expired - Lifetime
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Abstract
The utility model relates to an electric metal sealing butterfly valve. The butterfly valve with a double-eccentric structure comprises a valve body, a valve seat, a valve rod, a butterfly plate and an electric transmission device, wherein the valve seat is arranged in a medium flow channel of the valve body; a sealing pair is formed by the butterfly plate and the valve seat; the valve rod is rotationally arranged in a shaft hole of the valve body in a penetrating manner and respectively connected with the electric transmission device and the butterfly plate; the valve seat is a U-shaped elastic valve seat annularly arranged along the medium flow channel; and a layer of stainless steel is welded on a sealing surface of the butterfly plate and the valve seat in a surfacing manner, and the sealing surface is polished into an arc surface. Compared with the prior art, the electric metal sealing butterfly valve has the advantages of good sealing performance.
Description
Technical field
The present invention relates to a kind of butterfly valve, especially relate to a kind of electric metal seal butterfly valve.
Background technique
The electric metal seal butterfly valve has the function that throttling, balance and pipeline dam.Be applicable to the supply and drain water system of petrochemical industry, environment protection treating, power plant, sewage treatment and tall building.It is on the pipeline of water, oil product, steam, air that this kind valve is applicable to operating temperature≤425 ℃, working pressure≤2.5MPa, flowing medium, the opening/closing mechanism that flows as directed control media, but general butterfly valve is difficult for realizing zero leakage.
Summary of the invention
Purpose of the present invention is exactly the electric metal seal butterfly valve that a kind of good seal performance is provided for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of electric metal seal butterfly valve, this butterfly valve is two eccentric structures, comprise valve body, valve seat, valve rod, butterfly plate and electric actuator, described valve seat is located in the media flow passage of valve body, described butterfly plate and valve seat consist of sealing pair, described valve rod is rotating to be located in the axis hole of valve body, and connect respectively electric actuator and butterfly plate, described valve seat is the U-shaped elastic seat that arranges along media flow passage annular, the sealing surface weld deposit of butterfly plate and valve seat has one deck stainless steel, and is polished to cambered surface.
Described valve seat is the alloyed steel valve seat.
Described valve seat is fixed on the valve body by sealing gland, is provided with gasket seal between valve seat and valve body and the sealing gland, the enhanced leaktightness performance.
Described valve rod is arranged with lining outward, the friction factor when being used for reducing the valve rod rotation.
The shaft hole inner wall of described valve rod and valve body is provided with the gap, is filled with filler in this gap, and the top and bottom of axis hole are respectively equipped with Gland and end cap.
Be provided with gasket seal between described end cap and the valve body, the enhanced leaktightness performance.
Compared with prior art, the present invention has the following advantages:
1, the electric metal seal butterfly valve adopts two eccentric structures, makes the butterfly plate turn-off to about 20 ° of parts, breaks away between butterfly plate and the U-shaped elastic seat, thereby reduces friction, and has reduced the operation moment of torsion.
2, valve seat adopts the U-shaped elastic design, has the advantages that the temperature difference and wearing and tearing etc. there is self-compensating, has guaranteed the valve seal performance.
3, because valve seat is the alloyed steel valve seat, possess high strength, high tenacity, good welding performance and cold forming capability, good corrosion proof characteristic, guarantee the valve seal performance.
4, the sealing surface weld deposit of butterfly plate has the stainless steel material that hardness is high, corrosion resistance is good, make to cause with the U-shaped elastic seat mechanical property that is complementary is arranged, the sealing face is cambered surface, the external diameter precision is high, tolerance is little, and carry out polishing treatment, not only guarantee good sealing but also have the characteristic that reduces operational torque.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that generalized section is looked on a left side of the present utility model.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As depicted in figs. 1 and 2, a kind of electric metal seal butterfly valve, this butterfly valve is two eccentric structures, its critical piece comprises valve body 11, valve seat 6, valve rod 14, butterfly plate 7 and electric actuator 18, valve seat 6 is the U-shaped elastic seat that arranges along media flow passage annular, adopt this U-shaped elastic design, so that valve seat 6 has the advantages that the temperature difference and wearing and tearing etc. there is self-compensating, guaranteed the valve seal performance.Valve seat 6 materials are alloyed steel, possess high strength, high tenacity, good welding performance and cold forming capability, good corrosion proof characteristic.Butterfly plate 7 consists of sealing pairs with valve seat 6, and butterfly plate 7 has one deck stainless steel with the sealing surface weld deposit of valve seat 6, and is finished to cambered surface, and valve rod 14 is rotating to be located in the axis hole of valve body 11, and connects respectively electric actuator 18 and butterfly plate 7.
All parts and the function of this butterfly valve are as follows:
End cap 1: as the capping of valve body 11, prevent the medium leakage;
Bolt I 2: fastening end cap 1 is connected with valve body 11;
Gasket seal I 3: prevent the medium leakage;
Sealing gland 4: inlay U-shaped elastic seat 6;
Screw 5: fit sealing gland 4 is connected with valve body 11;
U-shaped elastic seat 6: consist of sealing pair with butterfly plate 7, guarantee that the sealing of valve is not revealed;
Butterfly plate 7: with 6 one-tenth sealing pairs of U-shaped elastic seat structure, guaranteeing that the sealing of valve is not revealed, is the major part of valve opening and closing element;
Pin 8: valve rod 14 is connected with butterfly plate;
Gasket seal II 9: prevent the medium leakage;
Gasket seal III 10: prevent the medium leakage;
Valve body 11: major function is the major part as the media flow passage, bears working medium pressure, temperature;
Lining 12: the friction factor when reducing valve rod 14 transhipment;
Filler 13: prevent the medium leakage;
Valve rod 14: hoisting capacity is delivered to major part on the open-shut device;
Gland 15: compress filler 13, prevent the medium leakage;
Bolt II 16: bonding pad gland 15 and valve body 11;
Nut 17: fastening Gland 15 is connected with valve body 11;
Electric actuator 18: valve is carried out electronic control processed;
Packing ring I 19: the locking torque that strengthens screw I and Electric actuator 18;
Screw I 20: the fastening screw trip bolt I is connected with Electric actuator 18;
Support 21: the link between valve body 11 and the Electric actuator 18;
Packing ring II 22: the locking torque that strengthens screw II 23 and valve body 11;
Screw II 23: fastening screw trip bolt II 23 is connected with valve body 11.
Claims (7)
1. electric metal seal butterfly valve, this butterfly valve is two eccentric structures, comprise valve body, valve seat, valve rod, butterfly plate and electric actuator, described valve seat is located in the media flow passage of valve body, described butterfly plate and valve seat consist of sealing pair, described valve rod is rotating to be located in the axis hole of valve body, and connect respectively electric actuator and butterfly plate, it is characterized in that, described valve seat is the U-shaped elastic seat that arranges along media flow passage annular, the sealing surface weld deposit of butterfly plate and valve seat has one deck stainless steel, and is polished to cambered surface.
2. a kind of electric metal seal butterfly valve according to claim 1 is characterized in that, described valve seat is the alloyed steel valve seat.
3. a kind of electric metal seal butterfly valve according to claim 1 and 2 is characterized in that, described valve seat is fixed on the valve body by sealing gland.
4. a kind of electric metal seal butterfly valve according to claim 3 is characterized in that, is provided with gasket seal between described valve seat and valve body and valve seat and the sealing gland.
5. a kind of electric metal seal butterfly valve according to claim 1 is characterized in that, described valve rod is arranged with lining outward.
6. a kind of electric metal seal butterfly valve according to claim 1 is characterized in that, the shaft hole inner wall of described valve rod and valve body is provided with the gap, is filled with filler in this gap, and the top and bottom of axis hole are respectively equipped with Gland and end cap.
7. a kind of electric metal seal butterfly valve according to claim 6 is characterized in that, is provided with gasket seal between described end cap and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333992 CN202691085U (en) | 2012-07-10 | 2012-07-10 | Electric metal sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220333992 CN202691085U (en) | 2012-07-10 | 2012-07-10 | Electric metal sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202691085U true CN202691085U (en) | 2013-01-23 |
Family
ID=47546709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220333992 Expired - Lifetime CN202691085U (en) | 2012-07-10 | 2012-07-10 | Electric metal sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202691085U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398185A (en) * | 2013-08-19 | 2013-11-20 | 南通欧特建材设备有限公司 | Electric ultrahigh-temperature butterfly valve |
| CN109237053A (en) * | 2018-09-11 | 2019-01-18 | 上海华通阀门有限公司 | A kind of butterfly valve seal method |
| CN109723835A (en) * | 2018-12-25 | 2019-05-07 | 兰控阀门执行器江苏有限公司 | A kind of valve actuator that anti-leak result is excellent |
-
2012
- 2012-07-10 CN CN 201220333992 patent/CN202691085U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398185A (en) * | 2013-08-19 | 2013-11-20 | 南通欧特建材设备有限公司 | Electric ultrahigh-temperature butterfly valve |
| CN109237053A (en) * | 2018-09-11 | 2019-01-18 | 上海华通阀门有限公司 | A kind of butterfly valve seal method |
| CN109723835A (en) * | 2018-12-25 | 2019-05-07 | 兰控阀门执行器江苏有限公司 | A kind of valve actuator that anti-leak result is excellent |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |
|
| CX01 | Expiry of patent term |