CN205118374U - Coal pulverizer export push -pull valve suitable for higher environment of dust uses down - Google Patents
Coal pulverizer export push -pull valve suitable for higher environment of dust uses down Download PDFInfo
- Publication number
- CN205118374U CN205118374U CN201520761125.6U CN201520761125U CN205118374U CN 205118374 U CN205118374 U CN 205118374U CN 201520761125 U CN201520761125 U CN 201520761125U CN 205118374 U CN205118374 U CN 205118374U
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- valve
- valve plate
- casing
- coal pulverizer
- valve casing
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Abstract
The utility model provides a coal pulverizer export push -pull valve suitable for higher environment of dust uses down, relates to a pipeline medium cutting device, valve plate (2) are not less than 10 with the acute angle that the horizontal plane presss from both sides, valve plate (2) are placed in totally and are taken over in (1), valve casing (4) and entry take over the valve pocket that (10) encloses by the export, are equipped with sealed valve port (7) at the lower extreme of export takeover (1), are equipped with support rolls (9) in the lower part cavity of valve casing (4), are equipped with protruding voussoir (8) on the lower inclined plane of valve plate (2), and work as the valve plate and close and be close to the terminal point, protruding voussoir (8) are bumped on support rolls (9), the utility model discloses a set up valve plate and valve casing into the slope structure, make the interior difficult long -pending powder of valve casing to make valve plate bite not when the motion, the air door operation is used more reliably, stretches out the moving part that the valve casing need seal and has only the valve rod, has realized that sealing line is short, and the shape rule easily realizes sealed purpose.
Description
[technical field]
The utility model relates to a kind of pipeline medium shut-off means, especially relate to a kind of be applicable to the higher environment of dust under use coal pulverizer outlet push-pull valve.
[background technique]
Coal pulverizer outlet push-pull valve is generally positioned at the outlet port of thermal power plant coal pulverizer powder feeding pipes, its Main Function cuts off powder feeding pipes when needed with the contact between coal pulverizer, the medium of coal pulverizer outlet is the coal dust intermixture that hot air is carried, therefore require that coal pulverizer exports push-pull valve and has good action response and the leakproofness after cutting out, to ensure the unlatching or the closedown that realize rapidly valve, the coal dust medium of conveying in time or cut-out powder feeding pipes, require that push-pull valve to external leakage hot air and coal dust, can not avoid the contamination caused thus simultaneously, coal pulverizer outlet push-pull valve in use, if there is accumulated powder dust stratification in valve casing, not only the valve plate of push-pull valve can be caused to work because of accumulated powder dust stratification, cause switch difficulty, more can cause coal pulverizer and powder feeding pipes blast because of accumulated powder burning, threaten the safe operation of unit, the powder feeding pipes in coal pulverizer outlet port is generally vertical setting, valve plate, the valve casing of push-pull valve conventional are at present vertical with pipeline in being horizontally disposed with, with regard to easy accumulated powder in such valve casing, uncontrollable consequence is caused for avoiding accumulated powder in valve casing, as far as possible technological means conventional at present shortens valve casing, reduces the volume in valve casing, namely adopt so-called short valve casing structure, short valve casing push-pull valve solves the accumulated powder problem of valve casing well, but what bring is that coal dust and hot blast problem of leakage not easily solve, because one end of valve plate is stretched out outside valve casing by valve casing too short having to, this will seal the gap between valve plate and valve casing, to avoid dielectric leakage to outside valve, sectional shape due to valve plate is the rectangle that Elongation is very large, the sealing be exposed at like this between valve plate outside valve casing and valve casing is very difficult, to valve plate processing planeness and roughness requirements also very high, short valve casing push-pull valve is caused to involve great expense, both the machining accuracy that improve valve plate had been made, the potted line needed due to sealing valve plate is very long, the consumption of switch valve required drive is not only caused to increase, the to-and-fro motion of valve plate after valve long-term work, very easily cause valve casing sealing place hot air and coal dust to outward leakage, both caused and wasted also befouling environment, and very easily cause rapid deterioration once leak, have to stop mill maintenance, thus shortening maintenance period, increase maintenance cost high, reduce coal pulverizer operation ratio.
[summary of the invention]
In order to overcome the deficiency in background technique, the utility model disclose a kind of be applicable to the higher environment of dust under use coal pulverizer outlet push-pull valve, by valve plate and valve casing are set to leaning structure, to make in valve casing not easily accumulated powder, thus making valve plate not bite when moving, air door runs and uses more reliable, and stretching out valve casing needs the moving element of sealing to only have valve rod, achieve potted line short, regular shape is easy to the object realizing sealing.
In order to realize described goal of the invention, the utility model adopts following technological scheme:
A kind of be applicable to the higher environment of dust under use coal pulverizer outlet push-pull valve, comprise discharge connection, valve plate, valve casing and inlet connection, folded by described valve plate and horizontal plane, acute angle is not less than 10 °, described valve plate is placed in completely by discharge connection, in the valve pocket that valve casing and inlet connection surround, sealing valve port is provided with in the lower end of discharge connection, support roller is provided with in the lower cavity of valve casing, protruding voussoir is provided with at the lower inclined plane of valve plate, when valve plate is closed close to terminal, described protruding voussoir touches on support roller, described valve plate and sealing valve port are contacted realize closing sealing.
Described be applicable to the higher environment of dust under the coal pulverizer outlet push-pull valve that uses, also comprise valve rod, valve casing is provided with valve stem seal, and described valve rod is connected with valve plate through one end be in valve casing valve pocket after valve stem seal, and the other end be in outside valve casing valve pocket at valve rod is provided with actuator.
Described be applicable to the higher environment of dust under the coal pulverizer outlet push-pull valve that uses, described actuator is electric actuator; Or cylinder; Or oil cylinder.
Described be applicable to the higher environment of dust under the coal pulverizer outlet push-pull valve that uses, described valve plate and sealing valve port are the structure that matches.
Owing to have employed technique scheme, the utility model has following beneficial effect:
Described in the utility model be applicable to the higher environment of dust under use coal pulverizer outlet push-pull valve, by valve plate and valve casing are set to leaning structure, to make in valve casing not easily accumulated powder, thus make valve plate not bite when moving, it is more reliable that air door runs use, stretching out valve casing needs the moving element of sealing to only have valve rod, achieves potted line short, and regular shape is easy to the object realizing sealing; The utility model have reasonable in design, be convenient to safeguard, improve effect, the feature such as cut the waste.
[accompanying drawing explanation]
Fig. 1 is the utility model structural representation.
Fig. 2 be Fig. 1 overlook partial sectional view.
In figure: 1, discharge connection; 2, valve plate; 3, valve rod; 4, valve casing; 5, valve stem seal; 6, actuator; 7, valve port is sealed; 8, protruding voussoir; 9, support roller; 10, inlet connection.
[embodiment]
Can explain the utility model in more detail by the following examples, the utility model is not limited to the following examples, and open the purpose of this utility model is intended to protect all changes and improvements within the scope of the utility model;
By reference to the accompanying drawings described in 1 or 2 be applicable to the higher environment of dust under use coal pulverizer outlet push-pull valve, comprise discharge connection 1, valve plate 2, valve casing 4 and inlet connection 10, described valve plate 2 is not less than 10 ° with acute angle folded by horizontal plane, described valve plate 2 is placed in by discharge connection 1 completely, in the valve pocket that valve casing 4 and inlet connection 10 surround, sealing valve port 7 is provided with in the lower end of discharge connection 1, support roller 9 is provided with in the lower cavity of valve casing 4, protruding voussoir 8 is provided with at the lower inclined plane of valve plate 2, when valve plate is closed close to terminal, described protruding voussoir 8 touches on support roller 9, described valve plate 2 and sealing valve port 7 are contacted realize closing sealing, described valve plate 2 and sealing valve port 7 are the structure that matches, also comprise valve rod 3, valve casing 4 is provided with valve stem seal 5, described valve rod 3 is connected with valve plate 2 through one end be in valve casing 4 valve pocket after valve stem seal 5, the other end be in outside valve casing 4 valve pocket at valve rod 3 is provided with actuator 6, described actuator 6 is electric actuator, or cylinder, or oil cylinder.
Implement described in the utility model be applicable to the higher environment of dust under use coal pulverizer outlet push-pull valve, during use, when needs open valve plate 2 with conducting moving gaseouse medium, actuator 6 drives valve plate 2 in shell 4 to actuator 6 direction motion by valve rod 3, valve plate 2 progressively leaves sealing valve port 7, air-flow can flow to discharge connection 1 from inlet connection 10, when needs close valve plate 2 to cut off moving gaseouse medium, actuator 6 drives valve plate 2 to move to away from actuator 6 direction in shell 4 by valve rod 3, in the final stage that valve plate 2 is closed, valve plate 2 is under the acting in conjunction of protruding voussoir 8 and support roller 9, be adjacent to sealing valve port 7, block moving gaseouse medium passage, air-flow cannot flow to discharge connection 1 from inlet connection 10, the valve plate 2 tilted and valve casing 4 make a part of coal dust of breeze airflow by being detained after the utility model, again enter air-flow along valve casing 4 landing of tilting to be pulled away, coal dust cannot form accumulation in the utility model, effectively prevent the bite of valve plate 2 when moving, the moving element stretching out valve casing 4 only has valve rod 3 to need sealing, potted line is short, be beneficial to raising equipment operation ratio, reduce maintenance cost, cut the waste and improve task environmental quality, for applying unit brings higher economic benefit.
The non-detailed portion of the utility model is prior art.
Claims (4)
1. the coal pulverizer outlet push-pull valve used under being applicable to the higher environment of dust, comprise discharge connection (1), valve plate (2), valve casing (4) and inlet connection (10), it is characterized in that: described valve plate (2) is not less than 10 ° with acute angle folded by horizontal plane, described valve plate (2) is placed in by discharge connection (1) completely, in the valve pocket that valve casing (4) and inlet connection (10) surround, sealing valve port (7) is provided with in the lower end of discharge connection (1), support roller (9) is provided with in the lower cavity of valve casing (4), protruding voussoir (8) is provided with at the lower inclined plane of valve plate (2), when valve plate is closed close to terminal, described protruding voussoir (8) is touched on support roller (9), described valve plate (2) and sealing valve port (7) are contacted realize closing sealing.
2. according to claim 1 be applicable to the higher environment of dust under use coal pulverizer outlet push-pull valve, it is characterized in that: also comprise valve rod (3), valve casing (4) is provided with valve stem seal (5), described valve rod (3) is connected with valve plate (2) through the one end be in after valve stem seal (5) in valve casing (4) valve pocket, is provided with actuator (6) at valve rod (3) the other end be in outside valve casing (4) valve pocket.
3. according to claim 2 be applicable to the higher environment of dust under use coal pulverizer outlet push-pull valve, it is characterized in that: described actuator (6) is electric actuator; Or cylinder; Or oil cylinder.
4. according to claim 1 be applicable to the higher environment of dust under use coal pulverizer outlet push-pull valve, it is characterized in that: described valve plate (2) and seal valve port (7) be the structure that matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520761125.6U CN205118374U (en) | 2015-09-29 | 2015-09-29 | Coal pulverizer export push -pull valve suitable for higher environment of dust uses down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520761125.6U CN205118374U (en) | 2015-09-29 | 2015-09-29 | Coal pulverizer export push -pull valve suitable for higher environment of dust uses down |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205118374U true CN205118374U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520761125.6U Active CN205118374U (en) | 2015-09-29 | 2015-09-29 | Coal pulverizer export push -pull valve suitable for higher environment of dust uses down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205118374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218403A (en) * | 2017-06-24 | 2017-09-29 | 大连康维科技有限公司 | Push-pull valve and its encapsulating method |
-
2015
- 2015-09-29 CN CN201520761125.6U patent/CN205118374U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218403A (en) * | 2017-06-24 | 2017-09-29 | 大连康维科技有限公司 | Push-pull valve and its encapsulating method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |