CN203809855U - Improved anti-lock butterfly valve - Google Patents
Improved anti-lock butterfly valve Download PDFInfo
- Publication number
- CN203809855U CN203809855U CN201420244278.9U CN201420244278U CN203809855U CN 203809855 U CN203809855 U CN 203809855U CN 201420244278 U CN201420244278 U CN 201420244278U CN 203809855 U CN203809855 U CN 203809855U
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- valve
- pipeline
- valve body
- butterfly valve
- butterfly
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- Expired - Fee Related
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Abstract
The utility model relates to butterfly valves used in the industry of petrochemical refinery plants, in particular to an improved anti-lock butterfly valve. The improved anti-lock butterfly valve comprises a valve body, a packing gland is connected between the valve body and a valve rod, and the valve rod is mounted on the valve body and connected with a valve plate arranged in the valve body. The improved anti-lock butterfly valve is characterized in that an upper connector and a lower connector are arranged at the upper end and the lower end of the valve body respectively, the upper connector is connected with a first check valve through a pipeline, the lower connector is connected with the second check valve through a pipeline, and the first check valve and the second check valve are connected through a pipeline and then connected with a back flushing pipeline. The improved anti-lock butterfly valve has the advantages that firstly, the problems of proneness to lock and action failure of the butterfly valve can be solved effectively; secondly, the improved anti-lock butterfly valve is low in investment and operation cost, long in operation cycle and simple and convenient to operate.
Description
Technical field
The utility model relates to petrochemical industry refinery industry butterfly valve, relates in particular to a kind of anti-jamming modified model butterfly valve.
Background technique
Butterfly valve is again Flap valve, is a kind of modulating valve simple in structure, and the switch that also can be used for low pressure pipeline medium is simultaneously controlled.Butterfly valve refers to that closure member is disk, rotates to reach a kind of valve of open and close around valve shaft, and on pipeline, main rising cut off and throttling action.Butterfly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the object that opens and closes or regulate.Butterfly valve is applicable to carry on the pipeline of various corrosivity, non-corrosive fluids medium in the engineering systems such as producer, coal gas, rock gas, liquefied petroleum gas (LPG), town gas, cold and hot air, chemical industry smelting and generation environment-friendly.
At present, Catalytic Unit main air pipeline, the supercharging airduct line of enterprise of petrochemical refining are all provided with modulating valve, this valve body structure is fly valve, because valve moves lessly at ordinary times, movement range is less, and pressurized air (main air, supercharging wind are pressurized air) (axle sleeve place) cooling, condensation in the cavity of the two ends up and down of valve form steam, axle and axle sleeve get rusty, add iron rust in pipeline, dirt etc. and easily accumulate in the gap of axle and axle sleeve, cause valve to be stuck, move malfunctioning.
For the problems referred to above, Chinese utility model patent CN2321983Y application discloses and has a kind ofly prevented that silt from entering the butterfly valve of bearing, comprise valve body, butterfly plate, valve shaft, outside framework oil seal, rolling bearing, positioning block, end cap, dunnage, driving mechanism, at valve shaft two ends, rolling bearing is housed, some groups of outside framework oil seals are housed on the valve shaft between rolling bearing and body cavity, by outside framework oil seal, prevent that silt from entering valve body.But in long-term using process, tiny silt still can enter into by the gap between outside framework oil seal and valve body in valve body, and the performance of butterfly valve is exerted an influence.
Prior art CN202852002U discloses a kind of butterfly valve, comprises valve body and adjustment disk, is provided with valve rod on adjustment disk, and adjustment disk is arranged in the valve pocket of valve body, and adjustment disk is rotatably connected by the axle sleeve on valve rod and valve body.On valve rod, be arranged with outboard bearing, outboard bearing is arranged at outside valve pocket and is connected with valve body; In axle sleeve, be provided with graphite folder metal ring, valve rod is inserted in graphite folder metal ring, and by graphite, presss from both sides metal ring and be connected with axle sleeve; The outside of valve rod has chromium coating; The top layer of axle sleeve has chromium coating.Axle sleeve and valve rod are carried out to chromium plating design, can effectively reduce the infiltration of high temperature pipe carbon black, increase graphite folder metal ring, increased the sealing of butterfly valve, but for non high temperature pipeline and carry the stuck Problem of Failure of butterfly valve that the dirtier medium fluid such as particle cause and cannot effectively be solved.
How to solve the problem of the easy stuck inefficacy of butterfly valve, become those skilled in the art's problem demanding prompt solution.
Model utility content
The technical problem that the utility model solves is to provide a kind of anti-jamming modified model butterfly valve, and this butterfly valve not only equipment cost is low, and can effectively solve the problem that butterfly valve is stuck, action was lost efficacy.
For addressing the above problem, the utility model adopts following technological scheme:
A kind of anti-jamming modified model butterfly valve, comprise valve body, valve rod is installed on valve body, between valve rod and valve body, is connected with Gland, valve rod connection is located at the valve plate in valve body, it is characterized in that, the upper and lower two ends of valve body are provided with upper connection, lower contact, and upper connection connects the first stop valve by pipeline, lower contact connects the second stop valve by pipeline, and the first stop valve, the second stop valve are connected with blowback lines after being communicated with by pipeline.Upper connection, lower contact are boring, mantle fibers on the axle sleeve at the upper and lower two ends of valve body, form inlet hole.
Wherein, described blowback lines comprises and adopts successively pipeline-connected restriction orifice, one-way valve, gate valve, blowing medium.
Wherein, described blowing medium is a kind of of pressurized air, steam.
The preferred supercharging wind of blowing medium, but not only limit supercharging wind, can pass into steam or other gas according to the difference of medium.This scheme also can be used for other easy crystallizations, the easily blowback of coking medium butterfly valve, only need pass into steam or other gas according to medium difference.
Wherein, the diameter of described restriction orifice is 1-3mm.The diameter of described restriction orifice is to draw according to the investigation of the correlation between blowing medium flow, pressure and operating cost.
The utility model is in valve body upper and lower two ends perforate, and adds blowback lines in valve body outside, and logical blowing medium (as supercharging wind) purges, and then effectively solves the problem that the stuck action of butterfly valve was lost efficacy; The preferred stainless steel pipeline of pipeline, not limiting is stainless steel pipeline, can be other corrosion-resistant pipelines.
Advantage of the present utility model is: 1) can effectively solve the butterfly valve problem that easily stuck, action was lost efficacy; 2) little investment, operating cost is low, the operation period is long, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure, 1, valve rod, 2, Gland, 3, valve plate, 4, valve body, 5, upper connection, 6, lower contact; 7, the first stop valve, the 8, second stop valve, 9, restriction orifice, 10, one-way valve, 11, gate valve, 12, blowing medium.
Embodiment
As shown in Figure 1, butterfly valve main body includes valve body 4, valve plate 3, valve rod 1, Gland 2, and described valve body 4 inner chambers are provided with valve plate 3, and described valve rod 1 is fixedly connected with valve plate 3 through valve body 4, between valve rod 1 and valve body 4, is connected with Gland 2; Valve body is provided with upper connection 5, lower contact 6 in two ends Shang Xia 4, and upper connection 5 connects the first stop valve 7 by pipeline, and lower contact 6 is connected after the second stop valve 8, the first stop valves 7, the second stop valve 8 are communicated with by pipeline and is connected with blowback lines by pipeline; Described blowback lines comprises adopts pipeline-connected restriction orifice 9, one-way valve 10, gate valve 11, blowing medium 12 successively.
Supercharging wind in-line is flowed through after gate valve 11, one-way valve 10, restriction orifice 9 successively, minute two-way a: road, via the first stop valve 7, enters valve body 4 inside by upper connection 5; Another road is via the second stop valve 8, by lower contact 6, be blown into valve body 4 inside, when there being flow of fluid medium out-of-date, the accumulations such as the iron rust of axle in axle sleeve place and pipeline, catalyzer just can flow with flowing medium, can not cause accumulation, thoroughly effectively solve the butterfly valve problem that easily stuck, action was lost efficacy.
The present embodiment is used is flowing medium, and blowing medium is supercharging wind, and the aperture of restriction orifice used is φ 1mm; Adopt φ 8 * 1mm stainless steel pipeline.Normal butterfly valve operation 5-6 month, just there will be butterfly valve stuck phenomenon, and this modified model butterfly valve has moved more than 1 year up to now, works well.
Claims (4)
1. an anti-jamming modified model butterfly valve, comprise valve body, valve rod is installed on valve body, between valve rod and valve body, be connected with Gland, valve rod connection is located at the valve plate in valve body, it is characterized in that, the upper and lower two ends of valve body are provided with upper connection, lower contact, upper connection connects the first stop valve by pipeline, and lower contact connects the second stop valve by pipeline, and the first stop valve, the second stop valve are connected with blowback lines after being communicated with by pipeline.
2. a kind of anti-jamming modified model butterfly valve according to claim 1, is characterized in that, described blowback lines comprises adopts pipeline-connected restriction orifice, one-way valve, gate valve, blowing medium successively.
3. a kind of anti-jamming modified model butterfly valve according to claim 2, is characterized in that, described blowing medium is a kind of of pressurized air, steam.
4. a kind of anti-jamming modified model butterfly valve according to claim 2, is characterized in that, the diameter of described restriction orifice is 1-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244278.9U CN203809855U (en) | 2014-05-13 | 2014-05-13 | Improved anti-lock butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420244278.9U CN203809855U (en) | 2014-05-13 | 2014-05-13 | Improved anti-lock butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809855U true CN203809855U (en) | 2014-09-03 |
Family
ID=51448604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420244278.9U Expired - Fee Related CN203809855U (en) | 2014-05-13 | 2014-05-13 | Improved anti-lock butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014179A (en) * | 2019-12-13 | 2020-04-17 | 济南大学 | Prevent that self-blowing of butterfly valve jam from sweeping structure and including butterfly valve |
-
2014
- 2014-05-13 CN CN201420244278.9U patent/CN203809855U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111014179A (en) * | 2019-12-13 | 2020-04-17 | 济南大学 | Prevent that self-blowing of butterfly valve jam from sweeping structure and including butterfly valve |
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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: 20140903 Termination date: 20210513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |