CN203516765U - Jamming-preventing butterfly valve special for gas - Google Patents
Jamming-preventing butterfly valve special for gas Download PDFInfo
- Publication number
- CN203516765U CN203516765U CN201320528121.4U CN201320528121U CN203516765U CN 203516765 U CN203516765 U CN 203516765U CN 201320528121 U CN201320528121 U CN 201320528121U CN 203516765 U CN203516765 U CN 203516765U
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- valve
- valve body
- bearing
- jamming
- butterfly valve
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Abstract
The utility model discloses a jamming-preventing butterfly valve special for gas, and belongs to pipeline flow cutoff and flow control devices. The jamming-preventing butterfly valve special for the gas is characterized in that bearing brackets are arranged at the two ends of a valve body along the center line of the valve body, grooves are formed in the outer ends of the bearing brackets respectively, a valve shaft is sleeved with two outboard bearings, the outboard bearings are installed in the grooves, the outboard bearing at the lower end is fixed to the valve body through an end cover, the outboard bearing at the upper end penetrates through a gland of the valve shaft and is fixed to the valve body, and the valve shaft is fixed to the valve body in a locating mode through the outboard bearings. The jamming-preventing butterfly valve has the advantages that the structure is simple; due to the fact that the outboard bearings are additionally arranged, the processing and assembling clearance between the valve shaft and the valve body is enlarged, the problem that a butterfly valve is jammed is effectively solved, the frequency and difficulty of overhauling of the jamming-preventing butterfly valve are reduced, the potential safety hazard is eliminated, and the overhauling cost is reduced; due to the fact that a scraper seal and an O-shaped ring are arranged at the position of contact between the valve shaft and the valve body, impurities are prevented from entering a sealing ring, and the sealing effect of the sealing ring is ensured, an oiling lubricating cavity is formed between the scraper seal and outer gland packing, the rotational resistance of the jamming-preventing butterfly valve is reduced, the frequency of the phenomenon that the impurities enter the jamming-preventing butterfly valve is reduced, and the sealing effect of the jamming-preventing butterfly valve is improved.
Description
Technical field
The utility model belongs to pipeline cutout and flow control device, relates in particular to the fly valve for gas pipe line keying and flow control.
Background technique
Butterfly valve is widely used on the pipeline in oil, chemical industry, metallurgy, water power field.At present, the butterfly valve of use is comprised of valve body, valve plate, valve shaft and sealing axle sleeve, and valve plate is fixed on valve shaft, is placed in the valve pocket of valve body, by the sealing axle sleeve being nested on valve shaft, is located.Advantage is that butterfly valve volume is little, quality is light, simple in structure, open and close rapidly.Defect is that the processing and assembling gap of this butterfly valve axle journal and axle sleeve is little of 0.5mm, and during use, this position, gap of the impurity in coal gas and aqueous vapor long-term corrosion, causes the usually locking of axle journal and axle sleeve, even stuck, and gas leakage has a strong impact on the Security of equipment operation; Frequent Accidents more renews butterfly valve, has increased spare part expense and maintenance cost, has affected production.
Summary of the invention
The defect existing in order to overcome prior art, the utility model provides a kind of coal gas special-purpose anti-block butterfly valve, solves butterfly switch jam, even rotates motionless problem, reduces the butterfly valve maintenance frequency and difficulty, reduces spare parts consumption, eliminates safe hidden trouble.
The special-purpose anti-block butterfly valve of coal gas, comprise valve body, valve plate and valve shaft, valve plate is fixedly on valve shaft, be placed in the valve pocket of valve body, filler is located at valve shaft and contacting in gap that valve body is set, Gland is bolted on valve body, be characterized in that valve body two ends arrange bearing bracket along center line, bearing bracket outer end arranges groove, valve shaft is set with two groups of outboard bearings, and outboard bearing packs in groove, and bottom end bearing is fixed on valve body by end cap, upper end bearing is fixed on valve body through the gland of valve shaft, and valve shaft is fixed on valve body by outboard bearing location.The gap of valve shaft and valve body increases 8～10 times.
The utility model further improves, and described outboard bearing adopts self oiling bearing, its inner ring and valve shaft transition fit, and outer ring transition fit is arranged in groove; Lower bearing is fixed by end cap, and end cap is fixed on valve body; Upper bearing (metal) is fixed through the gland of valve shaft, and gland is fixed on valve body.Valve shaft rotates with outboard bearing.
The utility model further improves, and at described valve shaft and valve body contacting point, establishes seal ring, and sealing circle consists of dust ring and O type circle, dust ring is near 10mm inside valve body, can avoid impurity to enter seal ring, guarantee seal ring sealing effect, prevent that bite from appearring in butterfly valve.
The utility model further improves, and between the dust ring of described valve body upper and lower part and filler, forms oil injecting lubricating cavity, and cavity is communicated with oil hole on valve body, by oil hole charging-up lubricant oil fat, reduce butterfly valve rotational resistance, reduce impurity simultaneously and enter, strengthen butterfly valve seal effect.
Compared with prior art, advantage is:
1, this butterfly valve structure is simple, by setting up outboard bearing, increases the processing and assembling gap of valve shaft and valve body, effectively solves the stuck problem of butterfly valve, reduces the butterfly valve maintenance frequency and difficulty, eliminates safe hidden trouble, and reduces the cost of overhaul;
2, in valve shaft and valve body contacting point, set up defences konisphere and O type circle, avoid impurity to enter seal ring, guarantees seal ring sealing effect;
3, between dust ring and external sealed filler, form oil injecting lubricating cavity, reduce butterfly valve rotational resistance, reduce impurity simultaneously and enter, strengthen butterfly valve seal effect.
Accompanying drawing explanation
Fig. 1 is the sectional view of the special-purpose anti-block butterfly valve of coal gas;
Fig. 2 is the I portion enlarged view of Fig. 1;
Fig. 3 is the II portion enlarged view of Fig. 1.
In figure: 1-end cap, 2-bearing, 2 '-bearing, 3-bearing bracket, 3 '-bearing bracket, 4-Gland, 4 '-Gland, 5-valve body, 6-bolt, 7-filler, 7 '-filler, 8-oil injecting lubricating cavity, 8 '-oil injecting lubricating cavity, 9-valve shaft, 10-valve pocket, 11-valve plate, 12-gland, 13-oil hole, 13 '-oil hole, 14-seal ring, 14 '-seal ring.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model will be further described.
Embodiment can find out by Fig. 1～3, and the special-purpose anti-block butterfly valve of coal gas, comprises valve body 5, valve plate 11 and valve shaft 9, and valve plate fixedly on valve shaft, is placed in the valve pocket of valve body filler (7; 7 ') be located at contacting in gap that valve shaft and valve body set, Gland (4; 4 ') by bolt 6, be fixed on valve body, valve body two ends arrange bearing bracket (3 along center line; 3 '), bearing bracket outer end arranges groove, and valve shaft is set with two groups of outboard bearings (2; 2 '), outboard bearing packs in groove, and bottom end bearing 2 is fixed on valve body by end cap 1, upper end bearing 2 ' be fixed on valve body through the gland 12 of valve shaft, valve shaft is fixed on valve body by outboard bearing location.The gap of valve shaft and valve body increases 8～10 times.
As seen from Figure 1, described outboard bearing (2; 2 ') adopt self oiling bearing, its inner ring and valve shaft 9 transition fit, outer ring transition fit is arranged in groove; Bottom end bearing 2 is fixed by end cap 1, and end cap is fixed on valve body; Upper end bearing 2 ' fixing through the gland 12 of valve shaft, gland is fixed on valve body.Valve shaft rotates with outboard bearing.
As seen from Figure 1, at described valve shaft 9, establish seal ring (14 with valve body 5 contacting points; 14 '), sealing circle consists of dust ring and O type circle, and dust ring, near 10mm inside valve body, can avoid impurity to enter seal ring, guarantees seal ring sealing effect, prevents that bite from appearring in butterfly valve.
As seen from Figure 1, at dust ring and the filler (7 of described valve body 5 upper and lower parts; 7 ') between form oil injecting lubricating cavity (8; 8 '), on cavity and valve body, oil hole (13; 13 ') be communicated with, by oil hole charging-up lubricant oil fat, reduce butterfly valve rotational resistance, reduce impurity simultaneously and enter, strengthen butterfly valve seal effect.
Claims (4)
1. the special-purpose anti-block butterfly valve of coal gas, comprises valve body (5), valve plate (11) and valve shaft (9), and valve plate (11) fixedly valve shaft (9) is upper, is placed in the valve pocket of valve body (5) filler (7; 7 ') be located at contacting in gap that valve shaft (9) and valve body (5) set, Gland (4; 4 ') by bolt (6), be fixed on valve body (5) above, it is characterized in that: valve body (5) two ends arrange bearing bracket (3 along center line; 3 '), bearing bracket (3; 3 ') outer end arranges groove, two groups of outboard bearings (2 of valve shaft (9) suit; 2 '), outboard bearing (2; 2 ') pack in groove, it is upper that bottom end bearing (2) is fixed on valve body (5) by end cap (1), and upper end bearing (2 ') is fixed on valve body (5) above through the gland (12) of valve shaft (9), and valve shaft (9) is by outboard bearing (2; 2 ') location be fixed on valve body (5).
2. the special-purpose anti-block butterfly valve of coal gas according to claim 1, is characterized in that: described outboard bearing (2; 2 ') adopt self oiling bearing, its inner ring and valve shaft (9) transition fit, outer ring transition fit is arranged in groove; Bottom end bearing (2) is fixing by end cap (1), and end cap (1) is fixed on valve body (5); Upper end bearing (2 ') is fixing through the gland (12) of valve shaft (9), and gland (12) is fixed on valve body (5).
3. the special-purpose anti-block butterfly valve of coal gas according to claim 1, is characterized in that: in described valve shaft (9) and valve body (5) contacting point, establish seal ring (14; 14 '), sealing circle consists of dust ring and O type circle, and dust ring is near valve body (5) inner side 10mm.
4. the special-purpose anti-block butterfly valve of coal gas according to claim 1, is characterized in that: dust ring and filler (7 in described valve body (5) upper and lower part; 7 ') between form oil injecting lubricating cavity (8; 8 '), cavity (8; 8 ') and the upper oil hole (13 of valve body (5); 13 ') be communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528121.4U CN203516765U (en) | 2013-08-28 | 2013-08-28 | Jamming-preventing butterfly valve special for gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320528121.4U CN203516765U (en) | 2013-08-28 | 2013-08-28 | Jamming-preventing butterfly valve special for gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516765U true CN203516765U (en) | 2014-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320528121.4U Expired - Fee Related CN203516765U (en) | 2013-08-28 | 2013-08-28 | Jamming-preventing butterfly valve special for gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516765U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202201A (en) * | 2015-10-16 | 2015-12-30 | 江苏康创自控工程有限公司 | High-sealability dust-proof butterfly valve |
| CN112283362A (en) * | 2020-11-12 | 2021-01-29 | 铜陵市经纬流体科技有限公司 | High-sealing butterfly valve and machining method thereof |
-
2013
- 2013-08-28 CN CN201320528121.4U patent/CN203516765U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202201A (en) * | 2015-10-16 | 2015-12-30 | 江苏康创自控工程有限公司 | High-sealability dust-proof butterfly valve |
| CN112283362A (en) * | 2020-11-12 | 2021-01-29 | 铜陵市经纬流体科技有限公司 | High-sealing butterfly valve and machining method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20210828 |
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| CF01 | Termination of patent right due to non-payment of annual fee |