CN203248746U - Large-aperture high-vacuum triple-eccentric double-seal butterfly valve - Google Patents
Large-aperture high-vacuum triple-eccentric double-seal butterfly valve Download PDFInfo
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- CN203248746U CN203248746U CN 201320144765 CN201320144765U CN203248746U CN 203248746 U CN203248746 U CN 203248746U CN 201320144765 CN201320144765 CN 201320144765 CN 201320144765 U CN201320144765 U CN 201320144765U CN 203248746 U CN203248746 U CN 203248746U
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- valve
- valve rod
- valve body
- heavy caliber
- high vacuum
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Abstract
The utility model discloses a large-aperture high-vacuum triple-eccentric double-seal butterfly valve. A valve body is provided with a fluid inlet and a fluid outlet. An oblique conical seal face with a stainless steel composite layer is arranged in the middle of the valve body, and omega-shaped double-seal rings are installed on a valve plate. The high-quality high-temperature-resistance EDM elastic rubber seal rings are adopted, so that the anti-aging effect is achieved. A seal ring pressing plate is used for fixing the seal rings, the valve plate is connected and fixed on an upper valve rod and a lower valve rod through pins and installed inside the valve body, the lower end of the lower valve rod stretches into a fixing hole which is formed in the lower portion of the valve body and provided with a guide sleeve, and the axial position of the lower valve rod is limited by a rolling bearing so that the defect that the axial ends of the seal rings are prone to abrasion can be eliminated. A self-supplementation-type vacuum filling structure is arranged on the filling part of the upper valve rod, so that outside air is prevented from entering the valve, and therefore the vacuum degree of the valve can be guaranteed. The upper end of the upper valve rod stretches out of the valve body, the upper valve rod is fixed on an output shaft of an execution mechanism through a connecting sleeve and can rotate by 90 degrees along with the execution mechanism, so that the area of a channel between the seal face of the valve plate and the valve body is changed or completely cut off.
Description
Technical field:
The utility model is applicable to the heavy caliber vacuum fields such as power plant's air-cooled unit, is specifically related to a kind of heavy caliber high vacuum three eccentric double-sealing butterfly valves.
Background technique:
Domestic vacuum butterfly valve major part commonly used all is middle line style or two eccentric structures, the rubber elasticity valve seat insert, and general PTFE filler when the working medium temperature, when degree of vacuum is higher, easily lost efficacy, and leaked in occuring, and used for a long time the seal ring axle head easily to wear and tear.
The model utility content:
For problems of the prior art and deficiency, the utility model provides a kind of multiple fields that is applicable to, be specially adapted to be used as the heavy caliber high vacuum of blocking and the regulating three eccentric double-sealing butterfly valves of fluid in the system of thermoelectricity air-cooled system unit Air-Cooling Island heat radiation street.
Technological scheme: a kind of heavy caliber high vacuum three eccentric double-sealing butterfly valves, comprise valve body, valve plate, valve rod, valve plate is installed in the valve body and with body cavity and has the sealing surface that cooperatively interacts, valve rod vertically is installed in the valve body and is fixed on the valve plate middle part, wherein, there is spacing in the kernel of section of the axle center of valve rod and described sealing surface; There are spacing in the axle center of valve rod and the center line of body cavity; The center line of described sealing surface and the center line of body cavity form an offset angle.
The sealing surface of body cavity is the oblique cone sealing surface with the compound layer of stainless steel.Be set with Ω shape Double seal ring on the sealing surface of valve plate, a side of valve plate is fixed with the seal ring pressing plate.
Described valve rod is divided into upper valve rod and lower valve rod, and upper and lower valve rod vertically is fixed on respectively the upper and lower end of valve plate, and upper and lower valve rod some be fixed in valve plate inside.
Between valve body top and the upper valve rod annular chamber is set, the annular chamber bottom is set with the filler pad, filler pad downside is provided with packing spring, and annular chamber top is fixed with Gland, is filled with the vacuum filler in annular chamber between filler pad and Gland.The middle part of vacuum filler also is provided with spacer ring.
The lower valve rod lower end arranges rolling bearing, and the rolling bearing lower end is provided with bottom, and bottom is fixed on the valve body.Be set with guide sleeve between described lower valve rod and the valve body.
Beneficial effect:
Three eccentric double-sealing butterfly valves of the present utility model can be widely used in that the industries such as oil, chemical industry, electric power, light textile, food, medicine, papermaking, municipal engineering and water factory are ended the medium of vacuum occasion or Flow-rate adjustment control, are specially adapted to the heavy caliber vacuum occasions such as power plant's air-cooled unit.Valve body adopts rolled steel plate roll-forming technology to weld by advanced person's numerical control submerged arc welding machine again, and butt welded seam can't harm radiographic inspection, fully guarantees the welding quality of valve body.Valve body can be flange-type, wafer type or welding type, be designed with the oblique cone sealing surface with the compound layer of stainless steel, and form through special abrasive process is refining, valve plate adopts Ω shape Double seal ring structure, and this structure makes it no matter in the situation which side pressurized is zero leakage; Valve stem seal adopts the special vacuum V-type combined sealing structure with self-compensating function, and infiltrate in the valve to cut off ambient atmosphere, thereby guarantee the degree of vacuum that valve is interior, the setting of valve rod end rolling bearing, the thrust that can bear valve rod alleviates again surface friction drag.Valve rod rotation prolongs valve working life flexibly.Valve plate, valve rod do not have axial displacement, thereby eliminate seal ring axle head defective easy to wear.Upper and lower valve rod in the valve body respectively stretches in the valve plate, makes valve rod not be subjected to the erosion of medium, also is not subjected to accumulation because of impurity to affect valve rod and rotates.This serial butterfly valve is specially adapted to do blocking and regulating of fluid in the system of thermoelectricity air-cooled system unit Air-Cooling Island heat radiation street.
Description of drawings:
Fig. 1 is the cross-sectional view of the utility model three eccentric double-sealing butterfly valves;
Fig. 2 is the B section structure for amplifying schematic diagram of Fig. 1;
Fig. 3 is the C section structure for amplifying schematic diagram of Fig. 1;
Fig. 4 is the A-A cross-sectional view of Fig. 1.
Embodiment:
Embodiment 1: referring to Fig. 1-Fig. 4, heavy caliber high vacuum three eccentric double-sealing butterfly valve bodies have fluid input and outlet, comprise valve body 6, valve plate 11 and the parts such as lower valve rod 10, upper valve rod 14.
The kernel of section of the axis deviation sealing surface of upper and lower valve rod, offset distance are a; The axis deviation body cavity center line of upper and lower valve rod, deviation distance is b, sealing surface center line and valve body 6 lumen centers lines form an offset angle α.Valve body 6 rolls type flange-type structure, wafer type structure or butt joint type structure for steel plate, valve rod 14 upper ends are stretched out to overlap behind the valve body and are fixed on the actuator shaft, and actuator does the rotation of 90 ° of angles, with the area that changes runner between valve plate front cover and the valve body or cut off fully.
Claims (8)
1. heavy caliber high vacuum three eccentric double-sealing butterfly valves, comprise valve body, valve plate, valve rod, valve plate is installed in the valve body and with body cavity and has the sealing surface that cooperatively interacts, valve rod vertically is installed in the valve body and is fixed on the valve plate middle part, wherein, there is spacing in the kernel of section of the axle center of valve rod and described sealing surface; There are spacing in the axle center of valve rod and the center line of body cavity; The center line of described sealing surface and the center line of body cavity form an offset angle.
2. heavy caliber high vacuum three eccentric double-sealing butterfly valves according to claim 1 is characterized in that: the sealing surface of body cavity is the oblique cone sealing surface with the compound layer of stainless steel.
3. heavy caliber high vacuum three eccentric double-sealing butterfly valves according to claim 1, it is characterized in that: be set with Ω shape Double seal ring on the sealing surface of valve plate, a side of valve plate is fixed with the seal ring pressing plate.
4. heavy caliber high vacuum three eccentric double-sealing butterfly valves according to claim 1, it is characterized in that: described valve rod is divided into upper valve rod and lower valve rod, upper and lower valve rod vertically is fixed on respectively the upper and lower end of valve plate, and upper and lower valve rod some be fixed in valve plate inside.
5. heavy caliber high vacuum three eccentric double-sealing butterfly valves according to claim 4, it is characterized in that: between valve body top and the upper valve rod annular chamber is set, the annular chamber bottom is set with the filler pad, filler pad downside is provided with packing spring, annular chamber top is fixed with Gland, is filled with the vacuum filler in annular chamber between filler pad and Gland.
6. heavy caliber high vacuum three eccentric double-sealing butterfly valves according to claim 5, it is characterized in that: the middle part of vacuum filler also is provided with spacer ring.
7. heavy caliber high vacuum three eccentric double-sealing butterfly valves according to claim 4, it is characterized in that: the lower valve rod lower end arranges rolling bearing, and the rolling bearing lower end is provided with bottom, and bottom is fixed on the valve body.
8. heavy caliber high vacuum three eccentric double-sealing butterfly valves according to claim 7 is characterized in that: be set with guide sleeve between described lower valve rod and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320144765 CN203248746U (en) | 2013-03-27 | 2013-03-27 | Large-aperture high-vacuum triple-eccentric double-seal butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320144765 CN203248746U (en) | 2013-03-27 | 2013-03-27 | Large-aperture high-vacuum triple-eccentric double-seal butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203248746U true CN203248746U (en) | 2013-10-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320144765 Expired - Fee Related CN203248746U (en) | 2013-03-27 | 2013-03-27 | Large-aperture high-vacuum triple-eccentric double-seal butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203248746U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629372A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Three-eccentric center low-flow-resistance butterfly valve |
| CN108953629A (en) * | 2018-09-18 | 2018-12-07 | 浙江中科阀门有限公司 | A kind of two-way very stiff and demanding all-metal sealing butterfly valve structure |
-
2013
- 2013-03-27 CN CN 201320144765 patent/CN203248746U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629372A (en) * | 2013-12-05 | 2014-03-12 | 河南煜达阀门制造有限公司 | Three-eccentric center low-flow-resistance butterfly valve |
| CN108953629A (en) * | 2018-09-18 | 2018-12-07 | 浙江中科阀门有限公司 | A kind of two-way very stiff and demanding all-metal sealing butterfly valve structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Yulong Industrial Park C District Jade Spring District of Hohhot City, No. 15 the Inner Mongolia Autonomous Region 010070 Patentee after: HUFA TECHNOLOGY HOLDINGS CO., LTD. Address before: Yulong Industrial Park C District Jade Spring District of Hohhot City, No. 15 the Inner Mongolia Autonomous Region 010070 Patentee before: Hufa Technology Holdings Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Large-aperture high-vacuum triple-eccentric double-seal butterfly valve Effective date of registration: 20190717 Granted publication date: 20131023 Pledgee: Inner Mongolia Productivity Promotion Center Co., Ltd. Pledgor: HUFA TECHNOLOGY HOLDINGS CO., LTD. Registration number: 2019150000013 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20210327 |