CN101225897B - Aid blowing valve for pneumatic conveyance capable of opening and closing automatically - Google Patents
Aid blowing valve for pneumatic conveyance capable of opening and closing automatically Download PDFInfo
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- CN101225897B CN101225897B CN2007100132602A CN200710013260A CN101225897B CN 101225897 B CN101225897 B CN 101225897B CN 2007100132602 A CN2007100132602 A CN 2007100132602A CN 200710013260 A CN200710013260 A CN 200710013260A CN 101225897 B CN101225897 B CN 101225897B
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Abstract
The invention provides an automatic open and close pneumatic conveying blowing-acid valve, belonging to a component for the pneumatic conveying system, which is characterized in that: a blowhole is arranged on one side of the valve body; a plurality of connecting holes of the delivery pipe are arranged on the other side of the valve body; a piston arranged at the rear end of the valve body is connected with the valve core arranged in the central section of the valve body through a connecting rod; a spring is arranged between an adjusting nut arranged in the anterior of the valve body and the valve core; the blowhole is communicated with the cavity between the valve body and the connecting holes of the delivery pipe through a padding block; a compressed air inlet hole arranged on the adjusting nut is communicated with the intracavity of the valve body arranged in the front of the valve core; the cross-sectional area of the piston is greater than the cross-sectional area of the valve core; the blowing-acid valve can automatically open for clearing blockage when the delivery pipe is blocked, and then can automatically close after finishing the clearing blockage. The pressure when open or close can be regulated according to requirement, thus the automatic open and close pneumatic conveying blowing-acid valve has the advantages of increasing the reliability of the pneumatic conveying system, reducing the production cost, and reducing the using gas volume as only the valves of the pipe blockage open for clearing blockage.
Description
Technical field
The invention provides a kind of device that is used on the air-transport system, especially a kind of aid blowing valve.
Background technique
It is a kind of conveying technology of granular material that strength is carried, and is used widely in fields such as thermoelectricity, metallurgy, chemical industry, food.But the multiple reason owing to this transporting system itself tends to take place the plugging phenomenon.Therefore, people have been installed the pressurized air auxiliary blowing apparatus that links to each other with compressed air line additional on conveyance conduit, its objective is to replenish pressurized air when plugging, to blow away the material of plugging place in conveyance conduit.Be applied in the valve on the pipeline auxiliary blowing apparatus now, be mostly gas control shutoff valve or electric valve.The action of these valves must drive with corresponding electric elements such as solenoid valve or electrical header.Its control mode has following several: the one, adopt pressure transmitter, and the pressure in the conveyance conduit is converted into electrical signal by pressure transmitter, after handling through PLC, the output electrical signal is to corresponding solenoid valve, the action that comes control valve by solenoid valve again; The 2nd, adopt pressure switch, directly detect pressure in the conveyance conduit with it, by pressure switch electrical signal transfer is arrived solenoid valve, the action that comes control valve again by solenoid valve.Adopt these electrical apparatus element to control, the one, because of complex structure has increased manufacture cost greatly, the 2nd, the control point is too many, greatly reduce the air-transport system reliability of operation, and some electric elements is positioned at outdoor, need carry out water-proofing treating, has increased cost.
Summary of the invention
Technical problem to be solved by this invention is, a kind of aid blowing valve for pneumatic handling of automatic opening-closing is provided, and it can be opened when conveyance conduit generation plugging automatically, closes automatically after conveyance conduit is unimpeded, thereby improves the air-transport system reliability of operation.
The present invention realizes like this, a kind of aid blowing valve for pneumatic handling of automatic opening-closing, it has valve body, valve body one side has air outlet hole, opposite side has the conveyance conduit attachment hole, the piston that install at the valve body rear portion links together by the spool at connecting rod and valve body middle part, spool has annular projection towards a side of piston, on the spool outside the annular projection air hole is arranged, between anterior adjustment nut of installing of valve body and the spool spring is arranged, there is cushion block connecting rod outside between piston and the spool, between cushion block and the valve body seal ring is arranged, air outlet hole is by the cavity between cushion block and the valve body, be connected with the conveyance conduit attachment hole, piston intake Guan Yiduan is through the valve body intracavity inter-connection of flow control valve and spool front, the valve gap that the other end passes on the valve body communicates with the cavity of the seal dissepiment back of piston back, the middle part is connected with air outlet hole, also have exhaust port to communicate on the valve body with the valve body inner chamber of piston front, the pressurized air inlet hole of adjusting on the nut communicates with the valve body inner chamber of spool front, and the sectional area of piston is greater than the sectional area of spool.
Adopt the aid blowing valve of said structure, be installed in during use between conveyance conduit and the compressed air line, when conveyance conduit generation plugging, can open automatically and carry out block clearing.After finishing, block clearing closes automatically.Valve opening and close with process in, need not any control unit, and valve open and the pressure when closing can regulate as required, thus improved the air-transport system reliability of operation, reduced cost of production.And have only the valve of plugging place just to open block clearing, thereby reduced compressed-air actuated gas consumption.This aid blowing valve can be used for the conveying of the similar materials such as pulverized fuel ash of thermoelectricity plant.
Description of drawings
Fig. 1 is the schematic representation of structure of the present invention.
Fig. 2 is the schematic representation of the valve core structure among the present invention.
Fig. 3 is the schematic representation that the present invention is connected with pipeline when using.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
As shown in drawings, the aid blowing valve for pneumatic handling of a kind of automatic opening-closing of the present invention, it has valve body 1, valve body one side has air outlet hole 12, opposite side has conveyance conduit attachment hole 16, the piston 4 that install at the valve body rear portion links together by the spool 15 of connecting rod 7 with the valve body middle part, spool has annular projection 19 towards a side of piston, on the spool outside the annular projection air hole 18 is arranged, between anterior adjustment nut of installing 3 of valve body and the spool spring 10 is arranged, there is cushion block 8 connecting rod outside between piston and the spool, seal ring 9 is arranged between cushion block and the valve body, air outlet hole 12 is by the cavity between cushion block and the valve body, be connected with conveyance conduit attachment hole 16, piston intake pipe 13 1 ends are through the valve body intracavity inter-connection of flow control valve 11 with the spool front, the valve gap 2 that the other end passes on the valve body communicates with the cavity of seal dissepiment 5 back of piston back, the middle part is connected with air outlet hole 12, also have exhaust port 17 to communicate on the valve body with the valve body inner chamber of piston front, the pressurized air inlet hole of adjusting on the nut 3 14 communicates with the valve body inner chamber of spool front, and the sectional area of piston is greater than the sectional area of spool.
Between described piston 4 and valve body 1, seal ring 6 is arranged.
During use, compressed air line is connected on the pressurized air inlet hole of adjusting on the nut 14, and pressurized air enters in the valve body through inlet hole 14.Conveyance conduit attachment hole 16 is connected with conveyance conduit.
Source of the gas (pressurized air) with certain pressure is arranged in the compressed air line.Whether the pressure in the conveyance conduit can be unobstructed and change along with mass transport.When the situation of conveyance conduit obstruction occurring, the pressure of conveyance conduit can raise.When the pressure in the conveyance conduit is elevated to certain value (this value can be determined by test), illustrate that conveyance conduit stops up fully.At this moment, gas pressure from the cavity of conveyance conduit between conveyance conduit attachment hole 16, cushion block and valve body, seal dissepiment 5 back cavitys that air outlet hole 12 enters the piston back, elastic force and pressurized air that the thrust that piston is produced can overcome spring act on making a concerted effort on the spool, spool is open automatically, and annular boss on the spool and valve body break away from, produce the slit.At this moment, pressurized air just enters in the conveyance conduit from cavity, conveyance conduit attachment hole 16 between the valve body inner chamber of spool front, air hole 18, cushion block and the valve body on the spool, blows away the material of plugging place.When the material of plugging place is blown away, after finishing block clearing, pressure in the conveyance conduit can reduce, when being reduced to certain value, when the thrust that the gas that enters valve body through conveyance conduit attachment hole 16 produces piston acts on making a concerted effort on the spool less than spring and pressurized air, spool is return original position under the effect of spring, valve is closed automatically.
The principle of this valve event, be since the sectional area of piston greater than the sectional area of spool, therefore, even the pressure in the conveyance conduit is less than compressed-air actuated pressure, elastic force and pressurized air that the thrust that piston is produced also can overcome spring act on making a concerted effort on the spool, finish breakdown action, its principle is similar to jack or hydraulic press.
The seal dissepiment 5 of piston back can be blocked in the dust in the gas piston outside, to guarantee the regular event of piston.
Come the tightness of Regulation spring by rotating adjusting nut, the can regulate spool is opened the force value in the required conveyance conduit.Also can pass through the ratio of the sectional area of change piston and spool, change the force value of valve opening.
Can between ash conveying pipe and compressed air hose, install a plurality of aid blowing valves additional, according to the conveying material difference, the spacing between the aid blowing valve of determining to install additional.This valve just moves when just taking place to stop up in the pipeline of its installation place, and the valve of other position can not move, and can reduce compressed-air actuated gas consumption like this.
As shown in Figure 3, conveyance conduit 37 links to each other with transfer pump 39 through discharge valve 38, and automatic aid blowing valve 35 is installed between pressurized gas pipeline 33 and conveyance conduit.Compressed air line also links to each other with transfer pump 39 through reduction valve 32, transfer pump suction valve 31, on the compressed air tunnel flowmeter 34 can also be arranged.Automatically also check valve 36 can be arranged between aid blowing valve 35 and the conveyance conduit 37.
Claims (2)
1. the aid blowing valve for pneumatic handling of an automatic opening-closing, it is characterized in that, it has valve body (1), valve body one side has air outlet hole (12), opposite side has conveyance conduit attachment hole (16), the piston (4) that install at the valve body rear portion links together by the spool (15) of connecting rod (7) with the valve body middle part, spool has annular projection (19) towards a side of piston, on the spool outside the annular projection air hole (18) is arranged, between anterior adjustment nut of installing (3) of valve body and the spool spring (10) is arranged, there is cushion block (8) connecting rod outside between piston and the spool, seal ring (9) is arranged between cushion block and the valve body, air outlet hole (12) is by the cavity between cushion block and the valve body, be connected with conveyance conduit attachment hole (16), piston intake pipe (13) one ends are through the valve body intracavity inter-connection of flow control valve (11) with the spool front, the valve gap (2) that the other end passes on the valve body communicates with the cavity of seal dissepiment (5) back of piston back, the middle part is connected with air outlet hole (12), also have exhaust port (17) to communicate on the valve body with the valve body inner chamber of piston front, the pressurized air inlet hole of adjusting on the nut (3) (14) communicates with the valve body inner chamber of spool front, and the sectional area of piston is greater than the sectional area of spool.
2. the aid blowing valve for pneumatic handling of automatic opening-closing as claimed in claim 1 is characterized in that, between described piston (4) and valve body (1) seal ring (6) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100132602A CN101225897B (en) | 2007-01-20 | 2007-01-20 | Aid blowing valve for pneumatic conveyance capable of opening and closing automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100132602A CN101225897B (en) | 2007-01-20 | 2007-01-20 | Aid blowing valve for pneumatic conveyance capable of opening and closing automatically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101225897A CN101225897A (en) | 2008-07-23 |
| CN101225897B true CN101225897B (en) | 2011-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100132602A Active CN101225897B (en) | 2007-01-20 | 2007-01-20 | Aid blowing valve for pneumatic conveyance capable of opening and closing automatically |
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| Country | Link |
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| CN (1) | CN101225897B (en) |
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| CN103057964A (en) * | 2013-01-11 | 2013-04-24 | 韩香莲 | Air conveyor |
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| CN104495385B (en) * | 2014-08-25 | 2016-06-01 | 邹平创星环保设备有限公司 | A kind of air conveying device |
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| CN108190527B (en) * | 2018-01-19 | 2023-09-08 | 山东创星电力辅机设备有限公司 | Blowing-assisting valve, blowing-assisting unit, blowing-assisting system and blowing-assisting method for pneumatic conveying |
| GB201906310D0 (en) * | 2019-05-03 | 2019-06-19 | Schenck Process Uk Ltd | Material conveying apparatus with shut down valves |
| CN110065823B (en) * | 2019-05-22 | 2020-02-21 | 北京中电永昌科技有限公司 | Unit fluidization efficient air-saving blockage-controlling anti-abrasion front-guiding type automatic plug full-pipe conveying system |
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| CN110861924B (en) * | 2019-11-15 | 2020-06-16 | 北京中电永昌科技有限公司 | Pneumatic ash conveying gas saving anti-blocking and abrasion control pilot valve |
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| CN115121555B (en) * | 2022-06-30 | 2023-11-07 | 中电投东北能源科技有限公司 | Incremental automatic pneumatic ash dredging device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2264283Y (en) * | 1996-05-13 | 1997-10-08 | 杨永祥 | Guide piston pressure reducing valve |
| US5924672A (en) * | 1995-03-13 | 1999-07-20 | Provacon, Inc. | Valve and actuator in combination |
| CN2477879Y (en) * | 2000-06-27 | 2002-02-20 | 顺德市北滘镇西海耀辉汽钉厂 | Acting valve of pneumatic auto feeder |
-
2007
- 2007-01-20 CN CN2007100132602A patent/CN101225897B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5924672A (en) * | 1995-03-13 | 1999-07-20 | Provacon, Inc. | Valve and actuator in combination |
| CN2264283Y (en) * | 1996-05-13 | 1997-10-08 | 杨永祥 | Guide piston pressure reducing valve |
| CN2477879Y (en) * | 2000-06-27 | 2002-02-20 | 顺德市北滘镇西海耀辉汽钉厂 | Acting valve of pneumatic auto feeder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101225897A (en) | 2008-07-23 |
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