CN103977641A - Chambered blowback pressure-adjustable bag-type dust collector - Google Patents
Chambered blowback pressure-adjustable bag-type dust collector Download PDFInfo
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- CN103977641A CN103977641A CN201410160461.5A CN201410160461A CN103977641A CN 103977641 A CN103977641 A CN 103977641A CN 201410160461 A CN201410160461 A CN 201410160461A CN 103977641 A CN103977641 A CN 103977641A
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- filter bag
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- blowback
- blowing
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Abstract
The invention discloses a chambered blowback pressure-adjustable bag-type dust collector. The chambered blowback pressure-adjustable bag-type dust collector comprises an inlet horn, a middle tank, an air-purifying chamber, a filter bag, an ash removal mechanism, a blowback pipe, a blowback pressure-adjustment valve and an outlet horn. The inlet horn is communicated with a left air-inlet part of the middle tank, the air-purifying chamber is located above the middle tank, the filter bag is arranged in the middle tank, the ash removal mechanism and the blowback pipe are located above the air-purifying chamber, the blowback pressure-adjustment valve is installed on the blowback pipe, and the outlet horn is communicated with a right gas-outlet part of the middle tank. The chambered blowback pressure-adjustable bag-type dust collector utilizes the blowback pressure-adjustment valve for adjustment of blowback pressure in low-pressure clean flue gas long-flow blowback deashing, has the advantages of pulse ejection deashing, is suitable for boiler fire coal change, improves ash removal efficiency, prolongs a filter bag service life, reduces induced draught fan power consumption and realizes energy saving and emission reduction.
Description
Technical field
The present invention is a kind of chamber-dividing counter-blowing adjustable-pressure sack cleaner, relates to the aspects such as a kind of blowback adjustable-pressure deashing mechanism.Belong to deduster equipment technology field.
Background technology
Current, sack cleaner is widely used in the industries such as power plant, metallurgy, chemical industry, mine, cement.Sack cleaner operation principle and operating mode are: dusty gas enters the dirt air chamber of deduster bottom, and dust is hindered in filter bag outside, forms dust layer, and the gas after filtration enters air-purifying chamber, discharged to atmosphere.After filtration time has been grown, staubosphere can thicken, and resistance increases, and needs deashing.
Deashing mainly contains pulse dust cleaning and the reverse deashing of air-flow at present: pulse dust cleaning mode is by the middle pressure air blown filter bag of 0.3-0.5Mpa, make filter bag produce impulse oscillation, shake off the staubosphere of filter bag outer surface, this purge mode, ash-removal effect is fine, but deashing air pressure is large, cause life-span of the filter bag short.The reverse deashing of air-flow, be main mainly with locellus back draught deashing, in order to reduce backflowing gas amount, a deduster is divided into multiple chambers, valve closing ash eliminating bag chamber outlet when deashing, open the entrance of blowback air-flow, make blowback air flow to filter bag, blowback air-flow blows to filter bag outer surface from filter bag inside, and the staubosphere of filter bag outer surface is come off, and this purge mode deashing pressure is very low, be less than 0.003Mpa, in the time of dust poor fluidity, deashing dynamics is inadequate again, causes resistance of the filter bag to rise and the increase of air-introduced machine power consumption.The back-blowing pressure of current branch chamber back-blowing bag type dust collector does not have pressure-regulating device, causes the pressure existence of back-blowing slightly little, or excessive drawback.When fire coal changes, while causing smoke dust mobility variations, blowback state is undesirable, is necessary to improve.
Summary of the invention:
1, object: the object of this invention is to provide a kind of chamber-dividing counter-blowing adjustable-pressure sack cleaner, it is a kind of solution of improving sack cleaner deashing mechanism deashing pressure.The present invention adopts blowback pressure-regulating valve, and the adjusting of blowback pressure during for the long air-flow reverse gas cleaning of the clean flue gas of low pressure, sprays the advantage of rushing deashing and reverse gas cleaning in conjunction with pulse, adapt to boiler fired coal and change, improve cleaning efficiency, extend life-span of the filter bag, reduce air-introduced machine power consumption, reach energy-saving and emission-reduction.
2, technical scheme: the present invention is a kind of chamber-dividing counter-blowing adjustable-pressure sack cleaner, sees Fig. 1, is made up of parts such as import loudspeaker, middle casing, air-purifying chamber, filter bag, deashing mechanism, back-blowing pipeline, counter-blowing wind-pressure control valve, outlet loudspeakers.Position annexation between them is: these import loudspeaker are communicated with the left intake section of middle casing, this air-purifying chamber is arranged on casing, within this filter bag is placed in casing, this deashing mechanism and back-blowing pipeline are positioned on air-purifying chamber, this counter-blowing wind-pressure control valve is arranged on back-blowing pipeline, and this outlet loudspeaker is communicated with the middle casing right side portion of giving vent to anger.
These import loudspeaker are horn-like structural members of being made by plate;
In this, casing is the box typed structure part of being made by plate;
This air-purifying chamber is the box typed structure part of being made by plate;
The Chang Elliptical circular of cross sectional shape Wei of this filter bag, approximately 6～9 meters of length, filter bag material is that glass fibre or polyphenylene sulfide or polytetrafluoroethylene (PTFE) etc. are fibrous.The shape of filter bag and structure refer to Fig. 3,4.The function of filter bag is by former dust-laden smoke filtration, and the dust in flue gas is filled into outside filter bag, reaches the object of purifying smoke.
This deashing mechanism is by slew gear, ring-like air duct, locellus cover composition.Relation is therebetween: slew gear is above air-purifying chamber outside, and ring-like air duct and locellus cover in air-purifying chamber.The shape of deashing mechanism and structure refer to Fig. 5,6.The function of deashing mechanism is: filter after dust at filter bag, assemble and stay one deck dust, after collection is left to a certain degree, can inside and outside filter bag, cause certain flue gas pressures difference.When this pressure differential has been clipped to setting value 800～1200Pa, order deashing mechanism starts deashing.This deashing mechanism is oppositely blown the dust of filter bag outer surface is blown and leaves filter bag by the clean flue gas of blowback, becomes the dust of piece, falls in ash bucket below.Thereby reach the object of filter bag ash removal.
This back-blowing pipeline is made up of steel pipe, and material is carbon steel.Reverse-blow pipe shape and structure refer to Fig. 5.Deashing mechanism is got clean flue gas from the outlet of air-introduced machine, and its pressure ratio is containing the high about 7000Pa of the former flue gas left and right of dust.The clean flue gas of fetching is transported to deashing mechanism as back-blowing, and when finding the dust collection of filter bag outer surface to stay, build-up of pressure is poor when setting value, has both started deashing.
This counter-blowing wind-pressure control valve is to be made up of DN800 butterfly valve, Pressure gauge manual or electric adjusting device and smoke outlet, and its function is to regulate the flue gas pressures that needs conveying.
This outlet loudspeaker is the horn-like structural member of being made by plate.
Wherein, in back-blowing pipeline, utilize clean flue gas reverse gas cleaning pressure for 7000Pa left and right.
The deashing principle of chamber-dividing counter-blowing deashing device is: prescribe a time limit because the many pressure differentials of control of dust reach the upper of setting value when filter bag, send deashing operating instruction.The clean flue gas of blowback is blowed to the filter bag in locellus, downward by filter pocket mouths, the collection ash of filter bag outside is blown off, filter bag pressure differential is reduced, thereby reach deashing object.
The present invention is that one utilizes clean flue gas reverse gas cleaning pressure for 7000Pa left and right, and the pressure of normal clean flue gas reverse gas cleaning only needs 3000Pa left and right, when because of boiler fired coal variety variations, while causing smoke dust poor fluidity, need the clean flue gas of 6000-7000Pa left and right as back-blowing.When boiler fired coal changes, the mobility of its smoke dust also can change, and needed blowback pressure can change.
The present invention gets and on airduct, establishes a pressure-regulating valve door at back-blowing, make the pressure change at random of clean flue gas back-blowing, can adapt to the smoke dust of various mobility, rationally deashing, reduce the filtration resistance of filter bag of dust collector, make air-introduced machine power consumption in lower state, improve life of bag filter, reach the object of energy-saving and emission-reduction.
This pressure-regulating valve door is pattern manually, also can electronic pattern.
3, advantage and effect: beneficial effect of the present invention is: the present invention can make deashing pressure change at random, can adapt to the smoke dust of various mobility, rationally deashing, makes air-introduced machine power consumption in lower state, improve life of bag filter, reach the object of energy-saving and emission-reduction.
Brief description of the drawings
Fig. 1 is chamber-dividing counter-blowing adjustable-pressure sack cleaner elevation of the present invention
Fig. 2 is chamber-dividing counter-blowing adjustable-pressure sack cleaner top view of the present invention
Fig. 3 is shape and the structure elevation of filter bag
Fig. 4 is shape and the structure top view of filter bag
The shape of Fig. 5 deashing mechanism and reverse-blow pipe and structure elevation
The shape of Fig. 6 deashing mechanism and structure top view
In figure: 1, import loudspeaker; 2, middle casing; 3, air-purifying chamber; 4, filter bag; 5, deashing mechanism; 6, back-blowing pipeline; 7, counter-blowing wind-pressure control valve; 8, outlet loudspeaker; 9, slew gear; 10, ring-like air duct; 11, locellus cover; P Pressure gauge.
Detailed description of the invention,
See Fig. 1, Fig. 2, a kind of chamber-dividing counter-blowing adjustable-pressure of the present invention sack cleaner, is mainly made up of parts such as import loudspeaker 1, middle casing 2, air-purifying chamber 3, filter bag 4, deashing mechanism 5, back-blowing pipeline 6, counter-blowing wind-pressure control valve 7, outlet loudspeakers 8.Position annexation between them is: these import loudspeaker 1 are communicated with middle casing 2 left parts, this air-purifying chamber 3 is arranged on casing 2, within this filter bag 4 is placed in casing 2, this deashing mechanism 5 and back-blowing pipeline 6 are positioned on air-purifying chamber 3, this counter-blowing wind-pressure control valve 7 is arranged on back-blowing pipeline 6, and this outlet loudspeaker 8 is communicated with middle casing 2 right parts.
These import loudspeaker 1 are the horn-like structural members of being made by plate;
In this, casing 2 is box typed structure parts of being made by plate;
This air-purifying chamber 3 is box typed structure parts of being made by plate;
The shape of this filter bag 4 and structure refer to Fig. 3,4.The Chang Elliptical circular of cross sectional shape Wei of this filter bag 4, approximately 6～9 meters of length, filter bag 4 materials are that glass fibre or polyphenylene sulfide or polytetrafluoroethylene (PTFE) etc. are fibrous.The function of filter bag 4 is by former dust-laden smoke filtration, and the dust in flue gas is filled into outside filter bag 4, reaches the object of purifying smoke.
This deashing mechanism 5 is by slew gear 9, ring-like air duct 10, and locellus cover 11 forms.Slew gear 9 is above air-purifying chamber 3 outsides, and ring-like air duct 10 and locellus cover 11 are in air-purifying chamber 3 inside.The shape of deashing mechanism 5 and structure refer to Fig. 5, Fig. 6.The function of deashing mechanism 5 is: filter after dust at filter bag 4, assemble and stay one deck dust, after collection is left to a certain degree, can inside and outside filter bag 4, cause certain flue gas pressures difference.When this pressure differential has been clipped to setting value 800～1200Pa, order deashing mechanism 5 starts deashing.This deashing mechanism 5 is oppositely blown the dust of filter bag 4 outer surfaces is blown and leaves filter bag by the clean flue gas of blowback, becomes the dust of piece, falls in ash bucket below.Thereby reach the object of filter bag ash removal.
This back-blowing pipeline 6 is to be made up of steel pipe, and material is carbon steel.Reverse-blow pipe shape and structure refer to Fig. 5.Deashing mechanism 5 its functions are to get clean flue gas from the outlet of air-introduced machine, and its pressure ratio is containing the high about 7000Pa of the former flue gas left and right of dust.The clean flue gas of fetching is transported to deashing mechanism 5 as back-blowing, and when finding the dust collection of filter bag 4 outer surfaces to stay, build-up of pressure is poor when setting value, has both started deashing.
This counter-blowing wind-pressure control valve 7 is by DN800 butterfly valve, adds adjusting device (manual or electronic), and smoke outlet is provided with Pressure gauge P(on the spot or long-range demonstration) composition.Its function is to regulate the flue gas pressures that needs conveying.
This outlet loudspeaker 8 is horn-like structural members of being made by plate.
Wherein, in back-blowing pipeline, utilize clean flue gas reverse gas cleaning pressure for 7000Pa left and right.
Its control principle is: in the time that deduster pressure reduction reaches setting value, deduster centralized control system is sent operating instruction, and deashing mechanism 5 moves, and back-blowing is blowed to filter pocket mouths, and the dust of filter bag 4 outer surfaces is blown off, and reaches deashing object.If filter bag outer surface dust is not easy to blow off, counter-blowing wind-pressure control valve 7 is opened greatly, increase counter-blowing wind-pressure, thereby blow off filter bag 4 outer surface dusts.If outer 4 surface dirt of filter bag are easily blown off, turn down counter-blowing wind-pressure control valve 7, reduce counter-blowing wind-pressure.
On counter-blowing wind-pressure control valve 7, establish scale, to indicate valve plate opening degree.Outlet air end at counter-blowing wind-pressure control valve 7 is established Pressure gauge, measures blast, and the long-range central control room that is shown to of wind pressure signal, makes control personnel in time according to the pressure reduction of filter bag 4, regulates counter-blowing wind-pressure.Make resistance of the filter bag, air-introduced machine power consumption is all the time in lower state.Reach filter bag 4 lifes, the object of air-introduced machine power consumption minimum.
Claims (2)
1. a chamber-dividing counter-blowing adjustable-pressure sack cleaner, is characterized in that: it is made up of import loudspeaker, middle casing, air-purifying chamber, filter bag, deashing mechanism, back-blowing pipeline, counter-blowing wind-pressure control valve and outlet loudspeaker parts; These import loudspeaker are communicated with the left intake section of middle casing, this air-purifying chamber is arranged on casing, and within this filter bag is placed in casing, this deashing mechanism and back-blowing pipeline are positioned on air-purifying chamber, this counter-blowing wind-pressure control valve is arranged on back-blowing pipeline, and this outlet loudspeaker is communicated with the middle casing right side portion of giving vent to anger;
These import loudspeaker are horn-like structural members of being made by plate;
In this, casing is the box typed structure part of being made by plate;
This air-purifying chamber is the box typed structure part of being made by plate;
The Chang Elliptical circular of cross sectional shape Wei of this filter bag, 6～9 meters of length, filter bag material is that glass fibre, polyphenylene sulfide, polytetrafluoroethylene fibre are made; The function of filter bag is by former dust-laden smoke filtration, and the dust in flue gas is filled into outside filter bag, reaches the object of purifying smoke;
This deashing mechanism is by slew gear, ring-like air duct, and locellus cover composition, relation is therebetween: slew gear is above air-purifying chamber outside, and ring-like air duct and locellus cover in air-purifying chamber; The function of deashing mechanism is: filter after dust at filter bag, assemble and stay one deck dust, can inside and outside filter bag, cause certain flue gas pressures poor after collection is left to a certain degree, when this pressure differential has arrived setting value 800～1200Pa, order deashing mechanism starts deashing; This deashing mechanism is oppositely blown the dust of filter bag outer surface is blown and leaves filter bag by the clean flue gas of blowback, and the dust of one-tenth piece, falls in ash bucket below, thereby reaches the object of filter bag ash removal;
This back-blowing pipeline is made up of steel pipe, material is carbon steel, deashing mechanism is got clean flue gas from the outlet of air-introduced machine, its pressure ratio is containing the high about 7000Pa of the former flue gas left and right of dust, the clean flue gas of fetching is transported to deashing mechanism as back-blowing, when finding the dust collection of filter bag outer surface to stay, build-up of pressure is poor when setting value, has both started deashing;
This counter-blowing wind-pressure control valve is to be made up of DN800 butterfly valve, Pressure gauge manual or electric adjusting device and smoke outlet, and its function is to regulate the flue gas pressures that needs conveying;
This outlet loudspeaker is the horn-like structural member of being made by plate.
2. a kind of chamber-dividing counter-blowing adjustable-pressure sack cleaner according to claim 1, is characterized in that: in this back-blowing pipeline, utilize clean flue gas reverse gas cleaning pressure for 7000Pa left and right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410160461.5A CN103977641B (en) | 2014-04-21 | 2014-04-21 | A kind of chamber-dividing counter-blowing adjustable-pressure sack cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410160461.5A CN103977641B (en) | 2014-04-21 | 2014-04-21 | A kind of chamber-dividing counter-blowing adjustable-pressure sack cleaner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103977641A true CN103977641A (en) | 2014-08-13 |
| CN103977641B CN103977641B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410160461.5A Expired - Fee Related CN103977641B (en) | 2014-04-21 | 2014-04-21 | A kind of chamber-dividing counter-blowing adjustable-pressure sack cleaner |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879515A (en) * | 2016-06-23 | 2016-08-24 | 中钢集团天澄环保科技股份有限公司 | Oblate bag type dust collector |
| CN106512577A (en) * | 2016-11-24 | 2017-03-22 | 广西大学 | Dust removal device for cement bunker |
| CN108465329A (en) * | 2018-05-29 | 2018-08-31 | 江苏力连重工机械有限公司 | A kind of air Sack dust-collecting equipment of blowback |
| CN108465304A (en) * | 2018-03-26 | 2018-08-31 | 刘璐 | A kind of new and effective deduster |
| CN108815976A (en) * | 2018-09-05 | 2018-11-16 | 安徽磐盛新型材料科技有限公司 | A kind of kiln gas dust separation system |
| CN110448965A (en) * | 2019-09-19 | 2019-11-15 | 山西三强新能源科技有限公司 | It is a kind of for collecting the main bag hose of static pressure type pulse of carbon black |
| CN110559758A (en) * | 2019-10-15 | 2019-12-13 | 江西博鑫精陶环保科技有限公司 | High-pressure pulse slow-release back-blowing structure for high-temperature wall-flow ceramic membrane dust removal equipment |
| CN117582749A (en) * | 2024-01-18 | 2024-02-23 | 德州欣宇电气自动化设备有限公司 | Air filtering equipment |
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| JP2007275859A (en) * | 2006-04-10 | 2007-10-25 | Nippon Air Filter Kk | Bag filter attachment mechanism of dust gas removing unit |
| CN101920146A (en) * | 2010-09-06 | 2010-12-22 | 刘尧 | Air dust-cleaning device |
| CN203417547U (en) * | 2013-07-05 | 2014-02-05 | 山川秀美生态环境工程有限公司 | Bag type dust collector capable of realizing compartment reverse blowing with purified flue gases |
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2014
- 2014-04-21 CN CN201410160461.5A patent/CN103977641B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007275859A (en) * | 2006-04-10 | 2007-10-25 | Nippon Air Filter Kk | Bag filter attachment mechanism of dust gas removing unit |
| CN101920146A (en) * | 2010-09-06 | 2010-12-22 | 刘尧 | Air dust-cleaning device |
| CN203417547U (en) * | 2013-07-05 | 2014-02-05 | 山川秀美生态环境工程有限公司 | Bag type dust collector capable of realizing compartment reverse blowing with purified flue gases |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879515A (en) * | 2016-06-23 | 2016-08-24 | 中钢集团天澄环保科技股份有限公司 | Oblate bag type dust collector |
| CN106512577A (en) * | 2016-11-24 | 2017-03-22 | 广西大学 | Dust removal device for cement bunker |
| CN108465304A (en) * | 2018-03-26 | 2018-08-31 | 刘璐 | A kind of new and effective deduster |
| CN108465329A (en) * | 2018-05-29 | 2018-08-31 | 江苏力连重工机械有限公司 | A kind of air Sack dust-collecting equipment of blowback |
| CN108815976A (en) * | 2018-09-05 | 2018-11-16 | 安徽磐盛新型材料科技有限公司 | A kind of kiln gas dust separation system |
| CN110448965A (en) * | 2019-09-19 | 2019-11-15 | 山西三强新能源科技有限公司 | It is a kind of for collecting the main bag hose of static pressure type pulse of carbon black |
| CN110559758A (en) * | 2019-10-15 | 2019-12-13 | 江西博鑫精陶环保科技有限公司 | High-pressure pulse slow-release back-blowing structure for high-temperature wall-flow ceramic membrane dust removal equipment |
| CN117582749A (en) * | 2024-01-18 | 2024-02-23 | 德州欣宇电气自动化设备有限公司 | Air filtering equipment |
| CN117582749B (en) * | 2024-01-18 | 2024-03-26 | 德州欣宇电气自动化设备有限公司 | Air filtering equipment |
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| Publication number | Publication date |
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| CN103977641B (en) | 2016-04-27 |
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Granted publication date: 20160427 Termination date: 20200421 |