CN101624143A - Blockage removing device and method for pneumatic ash conveying pipe - Google Patents
Blockage removing device and method for pneumatic ash conveying pipe Download PDFInfo
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- CN101624143A CN101624143A CN200910104514A CN200910104514A CN101624143A CN 101624143 A CN101624143 A CN 101624143A CN 200910104514 A CN200910104514 A CN 200910104514A CN 200910104514 A CN200910104514 A CN 200910104514A CN 101624143 A CN101624143 A CN 101624143A
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- ash conveying
- conveying pipe
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Abstract
The invention relates to a blockage removing device and a method for a pneumatic ash conveying pipe in a gas bag-type dedusting system of a blast furnace. The blockage removing device comprises an ash conveying air source (7) and an air inlet valve (2) which are communicated with the ash conveying pipe (8). The blockage removing device is characterized by also comprising a negative-pressure reverse pumping valve (1) with a closing valve, and a pressure detecting unit (4) which is arranged on the ash conveying pipe (8) and used for controlling the opening and closing of the air inlet valve (2) and the negative-pressure reverse pumping valve (1), wherein the negative-pressure reverse pumping valve (1) is arranged on the ash conveying pipe (8). The blockage removing device can conveniently solve the problem of ash blockage on the ash conveying pipe by adopting the blockage removing method of positive-pressure inflation and negative-pressure reverse pumping and can automatically remove blockage, thereby improving the work efficiency of the ash conveying system.
Description
Technical field
The present invention relates to a kind of blockage-eliminating device and method that is used for the Pneumatic ash conveying pipeline, particularly a kind ofly be used for blockage-eliminating device and the method that the blast furnace gas cloth bag dedusting device is delivered to the dirt ash ash conveying pipe in grey storehouse.
Background technology
In the blast furnace gas cloth bag dedusting Pneumatic ash conveying technology, the dirt ash that blast furnace gas is removed through bag dust collector passes through the Pneumatic ash conveying ducting to grey storehouse.Because the factors such as configuration, the uncertainty in the Pneumatic ash conveying process and operation of dirt ash character, Pneumatic conveyer, the plugging phenomenon of ash conveying pipe often is difficult to avoid.When this plugging phenomenon occurring, unimpeded method commonly used at present is exactly to open the air inlet valve inflated with nitrogen in ash conveying pipe that is arranged on the ash conveying pipe, but the unimpeded effect is not good when using.In case because plugging, the material bolt forms in the pipeline, inflation will make the material bolt more solid, put and take apart and carry out pipe-dredging so in practical operation, have only to seek to stop up, so both influenced the normal operation of ash-transmission system, increasing maintenance workload again, is one of operating outstanding problem of Pneumatic ash conveying system.
Summary of the invention
The object of the present invention is to provide a kind of blockage-eliminating device that is used for the Pneumatic ash conveying pipeline simple in structure.
Another object of the present invention is to provide a kind of unimpeded method of being convenient to operate that is used for the Pneumatic ash conveying pipeline.
The object of the present invention is achieved like this: a kind of blockage-eliminating device that is used for the Pneumatic ash conveying pipeline, comprise the defeated grey source of the gas and the air inlet valve that are communicated with ash conveying pipe, it is characterized in that: it also comprises the negative pressure back suction valve of the band shutoff valve that is provided with on the described ash conveying pipe, and being arranged on the described air inlet valve of control on the described ash conveying pipe and the pressure sensing cell of described negative pressure back suction valve opening and closing, pressure sensing cell is used to detect the pressure of air inlet and back suction gas in the pipeline.
This blockage-eliminating device is used for the ash-transmission system of blast furnace gas cloth bag dedusting device, and ash conveying pipe is the ash conveying pipe that is arranged between bag dust collector and the grey storehouse.
Above-mentioned negative pressure back suction valve and described air inlet valve all are arranged at the top of described ash conveying pipe, and described negative pressure back suction valve is positioned at after the described air inlet valve, discuss with the inflation direction in the ash conveying pipe.
Another object of the present invention is achieved in that a kind of unimpeded method that is used for the Pneumatic ash conveying pipeline, it is characterized in that: when ash conveying pipe generation plugging, to the inflation of ash conveying pipe malleation, pipeline is pressurizeed earlier, and detect the interior inflation pressure of monitoring pipeline; When aeration gas flow after the position of plugging material bolt takes place for certain to the piping, stream pressure rises, in case when reaching setting value, stop inflation; And then pipeline carried out the negative pressure back suction, make the termination of plugging material bolt produce high negative pressure, thereby come the loosening material of back suction material bolt bolt by this negative pressure; At last pipeline is carried out stingy amount and purge block clearing.
In the device of the present invention, the configuration in whole Pneumatic ash conveying system of its valve is simple, can adopt pneumatic or electrically operated valve, realizes the automatic guidance of dredging pipeline, and unimpeded is effective, has improved the reliability of total system.The method of the invention, only utilize malleation inflation and negative pressure back suction just can solve stifled grey problem on the ash conveying pipe easily, and need not seek the particular location of the obstruction point on the ash conveying pipe, automatically tackling blockage, reduce labour intensity widely, improved the work efficiency of ash-transmission system simultaneously.The present invention has reached its intended purposes through the engineering practice proof, and obvious technical effects has thoroughly solved the stifled grey problem on the ash conveying pipe.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is done to describe further, but the present invention is not limited in following embodiment.
Embodiment: referring to Fig. 1, a kind of blockage-eliminating device that is used for the Pneumatic ash conveying pipeline provided by the invention, it comprises defeated grey source of the gas 7 and the air inlet valve 2 that is communicated with ash conveying pipe 8, it is characterized in that: it also comprises the negative pressure back suction valve 1 of the band shutoff valve 3 that is provided with on the described ash conveying pipe 8, and being arranged at the pressure sensing cell 4 that the described air inlet valve 2 of control on the described ash conveying pipe 8 and described negative pressure back suction valve 1 open and close, pressure sensing cell 4 is used to detect the pressure of air inlets and back suction gas in the ash conveying pipe 8.
Shutoff valve 3 in this example is the hand off valve; Pressure sensing cell 4 can be selected existing relevant mature technology for use.
Device of the present invention is used for blast furnace gas bag-type dust removing system, and ash conveying pipe 8 is to be arranged between bag dust collector 6 and the grey storehouse 5.
From figure, we it can also be seen that: negative pressure back suction valve 1 and described air inlet valve 2 all are arranged at the top of described ash conveying pipe 8, and described negative pressure back suction valve 1 is positioned at after the described air inlet valve 2.Here before and after so-called is to discuss with the inflation direction in the ash conveying pipe.
Method provided by the invention is: when ash conveying pipe generation plugging, inflate body earlier in ash conveying pipe, pipeline is pressurizeed, and detect the interior inflation pressure of monitoring pipeline; When aeration gas flow after the position of plugging material bolt takes place for certain to the piping, pressure can rise, in case reach setting value, stops inflation; And then pipeline carried out the negative pressure back suction, make the termination of plugging material bolt produce high negative pressure, thereby come the loosening material of back suction material bolt bolt by this negative pressure; At last pipeline is carried out stingy amount and purge the effect that reaches block clearing.
Claims (5)
1, a kind of blockage-eliminating device that is used for the Pneumatic ash conveying pipeline, comprise the defeated grey source of the gas (7) and the air inlet valve (2) that are communicated with ash conveying pipe (8), it is characterized in that: described blockage-eliminating device also comprises the negative pressure back suction valve (1) of the band shutoff valve (3) that described ash conveying pipe (8) go up to be provided with, and is arranged on the described air inlet valve of control (2) on the described ash conveying pipe (8) and the pressure sensing cell (4) of described negative pressure back suction valve (1) switching.
2, the blockage-eliminating device that is used for the Pneumatic ash conveying pipeline as claimed in claim 1 is characterized in that: described ash conveying pipe (8) is meant the ash conveying pipe of blast furnace gas bag-type dust removing system, and it is arranged between bag dust collector (6) and grey storehouse (5).
3, the blockage-eliminating device that is used for the Pneumatic ash conveying pipeline as claimed in claim 1 is characterized in that: described shutoff valve (3) is the hand off valve.
4, as claim 1, the 2 or 3 described blockage-eliminating devices that are used for the Pneumatic ash conveying pipeline, it is characterized in that: described negative pressure back suction valve (1) and described air inlet valve (2) are automatic valve, and be arranged at the top of described ash conveying pipe (8), and described negative pressure back suction valve (1) is positioned at described air inlet valve (2) afterwards.
5, a kind of unimpeded method that is used for the Pneumatic ash conveying pipeline: it is characterized in that: when ash conveying pipe generation plugging,, and detect the interior inflation pressure of monitoring pipeline earlier to the inflation of ash conveying pipe malleation; When aeration gas flow pressure rises, when reaching setting value, stop inflation; And then pipeline carried out the negative pressure back suction, make plugging material bolt loosening; At last pipeline is carried out stingy amount and purge block clearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910104514A CN101624143A (en) | 2009-08-03 | 2009-08-03 | Blockage removing device and method for pneumatic ash conveying pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910104514A CN101624143A (en) | 2009-08-03 | 2009-08-03 | Blockage removing device and method for pneumatic ash conveying pipe |
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| Publication Number | Publication Date |
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| CN101624143A true CN101624143A (en) | 2010-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910104514A Pending CN101624143A (en) | 2009-08-03 | 2009-08-03 | Blockage removing device and method for pneumatic ash conveying pipe |
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| CN (1) | CN101624143A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907407A (en) * | 2010-08-05 | 2010-12-08 | 中冶宝钢技术服务有限公司 | Hot powder splashing prevention device for dredging kiln |
| CN101912703A (en) * | 2010-09-07 | 2010-12-15 | 株洲南车时代电气股份有限公司 | Device and method for collecting and filtering dust of numerical control miller |
| CN109332304A (en) * | 2018-08-17 | 2019-02-15 | 合肥市城市生命线工程安全运行监测中心 | A kind of gas sampling channel blockage dredging method |
-
2009
- 2009-08-03 CN CN200910104514A patent/CN101624143A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907407A (en) * | 2010-08-05 | 2010-12-08 | 中冶宝钢技术服务有限公司 | Hot powder splashing prevention device for dredging kiln |
| CN101907407B (en) * | 2010-08-05 | 2012-10-17 | 中冶宝钢技术服务有限公司 | Hot powder splashing prevention device for dredging kiln |
| CN101912703A (en) * | 2010-09-07 | 2010-12-15 | 株洲南车时代电气股份有限公司 | Device and method for collecting and filtering dust of numerical control miller |
| CN101912703B (en) * | 2010-09-07 | 2012-06-06 | 株洲南车时代电气股份有限公司 | Device and method for collecting and filtering dust of numerical control miller |
| CN109332304A (en) * | 2018-08-17 | 2019-02-15 | 合肥市城市生命线工程安全运行监测中心 | A kind of gas sampling channel blockage dredging method |
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Open date: 20100113 |