CN205127572U - Strain bag collector with self -loopa ash removal device - Google Patents
Strain bag collector with self -loopa ash removal device Download PDFInfo
- Publication number
- CN205127572U CN205127572U CN201520774608.XU CN201520774608U CN205127572U CN 205127572 U CN205127572 U CN 205127572U CN 201520774608 U CN201520774608 U CN 201520774608U CN 205127572 U CN205127572 U CN 205127572U
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- filter bag
- card
- deashing
- bag
- loopa
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Abstract
The utility model provides a strain bag collector with self -loopa ash removal device, relates to a dust remover, the dust remover includes basic support, distribution of air flow and guiding device, filter bag room, air -purifying chamber, filtering component, self -loopa dust cleaning system, ash bucket, electric control system, still includes heat preservation, platform, stair, the grey system of precoating, the air intake is equipped with distribution of air flow and guiding device, be equipped with in the bag district forward with ascending airflow channel, the filter bag divides at the rectangle indoorly arranges that several filter bags mouths compress tightly through the bolt with a steel sheet according to the group, it is downthehole to make the filter bag firmly block at the card, the system has a filter bag hole on the card, the orifice plate is smooth not to have the burr, the filter bag is at card upper portion and the downthehole limit of card formation double seal structure. This dust remover adopts the low pressure air purge of centrifugal fan production, the deashing of airtight, no leakage formula, has both guaranteed the effect of jetting, does not make the filter bag impaired slight again, and operation safe and reliable adopts program control to march one by one in proper order and sweeps, reaches the purpose of deashing.
Description
Technical field
The utility model relates to a kind of deduster, particularly relates to a kind of filter bag type deduster with self-loopa deashing device.
Background technology
Filter bag type deduster is the mainstream technology of coal-fired plant boiler flue gas ash removal, and sack cleaner is primarily of compositions such as basis, framework, filter bag room, air-purifying chamber, filter assemblies (filter bag, bag cage, card etc.), flue-dust retainer and electric control systems.
Filter bag type deduster operation principle is: enter bag dust collector from boiler ash-laden gas through the flue of smoke inlet, under the suction function of the boiler induced-draft fan after being arranged on deduster, ash-laden gas is by entering sack cleaner with the air horn of deduster, by the airflow-distribution board of filter bag type deduster, ensure that flue gas enters the assignment of traffic before filter bag bundle, the flow velocity avoiding local dusty gas too fastly causes region filter bag wear phenomenon, dusty gas is under negative pressure through filter bag, gas is purified, clean gas is discharged from the caudal end egress smoke box level of air-purifying chamber.Dust is blocked in filter bag and surveys outward, along with the increasing of dust on filter bag surface, pressure reduction inside and outside filter bag also increases, when pressure reduction reaches deashing setting value, pulse valve is opened, to be sprayed in filter bag by compressed air by the nozzle on deashing pipe and complete a deashing, when the pressure reduction inside and outside filter bag is reduced to the setting value that deashing stops, soot cleaning system quits work automatically.Deashing process circulates successively, and the inside and outside differential pressure of filter bag is remained in a more satisfactory range of set value, thus ensure that the continuing of deduster and steam generator system, normally runs, the gas meet the requirement of environmental protection of discharge.
Current sack cleaner deashing is divided into two large main products: row winding-up pulse, turn winding-up pulse.
Row winding-up pulse bag type dust collector: as Fig. 1, pulse bag type dust collector top view.
Row winding-up pulse bag type dust collector is the mainstream technology of coal-fired plant boiler flue gas ash removal, most widely used general.Pulse bag type dust collector is made up of ash bucket, casing, air-purifying chamber and jetting deashing system, and sack cleaner filters filter type outside adopting, and filter bag is to embark on journey hanging in column on card, and in filter bag, marsupial cage supports.For ensureing pulse jet effect, the injection hole in injection tube is designed to different pore sizes, adopts programme-control to purge line by line successively, reaches the object of deashing.Its principal character is filter bag is cylindrical, and matrix arrangements, jets line by line.
Turn winding-up pulse bag type dust collector: as Fig. 2, top view turns winding-up pulse bag type dust collector structure.Turning winding-up pulse filter bag type deduster, to be different from row winding-up pulse bag type dust collector be that filter bag is hung on orifice plate, and arrange with concentric-ring pattern, instead of with radial straight line.Deduster adopts outside filtering type filter type, the deashing of rotary blowing pulse bag type dust collector, employing rotation spray blowpipe, pulse valve add the mode of pulse gas bag, by the unlatching that pulse valve is very brief, compressed air in gas bag is blown into each filter bag equally, filter bag generation bulging is shaken, realizes the deashing of filter bag.This technology is identical with the Cleaning mechanism of row injection technology, just instead of the little tolerance of middle pressure with low pressure atm number.
The defect of domestic and international two class main flow dedusters existence at present:
A, need a set of source purge gas, first this cover source of the gas will be made up of air compressor (or roots blower), also needs outfit air cleaner equipment, drier etc.Because pressure is higher, power consumption is large.Even if adopt drier also unavoidable deduster internal condensation.
B, need magnetic valve, the large-scale deduster that row blows needs a hundreds of magnetic valve, churning also need nearly ten magnetic valves.One is power consumption, and two is increase fault rate, and a hundreds of magnetic valve (capable blow) is as long as there is a fault just to make a region can not deashing.Winding-up point has again certain distance apart from a filter pocket mouths, and the ratio really accounted for the air of the purging power that filter bag produces is very little, and therefore power consumption is large.
C, due to deashing pressure higher, to filter bag damage larger.Life of bag filter reduces, and is usually no more than 3 years.
The deduster that d, row blow, owing to installing jet pipe above filter bag, causes filter bag and bag cage to change extremely inconvenient.
The deduster that f, row blow is owing to adopting rounded pocket floor space large, and deduster volume is large; Although the deduster of churning is flat filter bag, adopt unitary circular to arrange, the volume waste at four angles, deduster volume is also large;
G, it is crucial that source purge gas enters in deduster, adds the load of boiler induced-draft fan, and energy consumption increases.And produce fluctuating load (large during purging, little when not purging).
Summary of the invention
The purpose of this utility model is to provide a kind of filter bag type deduster with self-loopa deashing device, the low-pressure air that this deduster adopts centrifugal blower to produce purges, the deashing of airtight, No leakage formula, not only ensured winding-up effect, but also do not made filter bag slightly impaired, safe and reliable to operation, adopt programme-control to purge line by line successively, reach the object of deashing.
The purpose of this utility model is achieved through the following technical solutions:
Have a filter bag type deduster for self-loopa deashing device, described deduster comprises base rack, airflow uniform distribution and guiding device, filter bag room, air-purifying chamber, filter assemblies, self-loopa soot cleaning system, ash bucket, electric control system, also comprises heat-insulation layer, platform, stair, precoating ash system, air inlet is provided with airflow uniform distribution and guiding device, gas channel forward and is upwards provided with in filter bag district, filter bag is arranged in sets in rectangle point indoor, several filter pocket mouths one block plate passes through bolt presses, filter bag is made to be stuck in card hole firmly, card is shaped with filtering bag holes, orifice plate Glabrous stings, filter bag forms double sealing structure on card top and card hole inner edge, bag cage is two or three joint combinations, plug-in type internal locking device is adopted to connect, soot cleaning system overlaps chain by left and right two and forms, left and right two cover chain-driving track transverse shifting, dolly is vertically moved in orbit by chain-driving, blower fan connects one and rotates loose joint, connect first rocking arm below, connect one again and rotate loose joint again by a telescopic rocking arm, deashing cover on ash removing trolley installs a loose flange additional, close fit, seal air tight, track two ends are provided with positioner, and bag cage mounted is arranged on card in filter bag, and compress through pressure ring, pressure ring is welded on pressing plate, is fixed by bolts on card, pressing plate is gone out pit and be used for fastening bolt, what pressing plate was smooth is laid on card, above first rocking arm end, a pulley is installed, above pulley, is provided with circuit orbit, hold up rocking arm.
Described a kind of filter bag type deduster with self-loopa deashing device, the structure of described rotation loose joint is by two flange therebetween ring-type hard lubrication and seal circle, and installs a bearing additional, connects with the bolt with spring.
Described a kind of filter bag type deduster with self-loopa deashing device, described telescopic rocking arm is flexible pipe, inside has two cover sealing rings, often overlaps sealing ring and is made up of 2 split rings respectively again.
Advantage of the present utility model and effect are:
1. this deduster is for the feature of fire coal boiler fume and flying dust and the structure designed and purge mode; Filter filter type outside filter bag type deduster also adopts, filter bag arranges that, to embark on journey hanging in column on card as row blows, in filter bag, marsupial cage supports.Filter bag shape adopts flat as revolving and blowing, and length is generally more than 8 rice.It has concentrated the advantage of above two kinds (row winding-up pulse, turn winding-up pulse) modes, can as row spray deashing line by line, again can pointwise deashing.Considerably increase filter area like this, reduce deduster volume.Under identical volume, filtration velocity reduces greatly.Reliable, stable; Other dedusters of volume ratio are little by more than 60%.
2. the utility model deashing car carries out airtight winding-up to every filter bag respectively.The low-pressure air (or adopting roots blower and boiler induced-draft fan to go out one's intention as revealed in what one says) adopting centrifugal blower to produce purges, the deashing of airtight, No leakage formula, has both ensured effect of jetting, and has not made again filter bag slightly impaired., greatly extend life-span of the filter bag (more than 5 years can be reached); Dust outlet concentration of emission≤10mg/Nm3, longtime running are safe and reliable, stably reaching standard.
3. the utility model deashing source of the gas is equality of temperature clean air, has thoroughly stopped dew condensation phenomenon; Deashing air adopts inner loop mode, does not increase boiler draft fan delivery, the most energy-conservation.
4. the utility model deashing car moves and makes replacing filter bag convenient, additionally reduces on-site installation work amount.
5. the utility model is without compressed air deashing and control, without air compressor; Achieve real energy-saving and emission-reduction; Repair and maintenance facilitates, can realize not brought offline maintenance.
6. the long-term lower resistance of the utility model is run, (600 ~ below 800Pa).
7. the utility model deashing car vertically moves on transverse shifting track.Drive the blowing-out ash cover of about one adjustable flanges, aim at one group of filter bag and purge.Deashing car power comes from the band chain being arranged on outdoor.Guarantee soot cleaning system safe operation.
8. the utility model controls to realize unmanned, and source purge gas is taken to same room source of the gas, does not only increase load and the fluctuation of boiler induced-draft fan, and thoroughly solves condensation trouble.Employing self-circulation mode runs.With efficient, resistant to elevated temperatures blower fan, pressure adjustable, the most energy-conservation, owing to adopting centrifugal blower high as source purge gas efficiency, energy-conservation more than 60%, do not establish magnetic valve, reduce fault rate, deashing pressure is low, very little to filter bag damage.Life of bag filter improves greatly, can more than 5 years, and adopt flat filter bag matrix arrangements again, deduster volume is minimum, and deashing covers on smooth pressing plate and moves, and is equivalent to mouth-to-mouth purging, ultrahigh in efficiency.
Accompanying drawing explanation
Fig. 1 is existing pulse bag type dust collector top view;
Fig. 2 is existing turn of winding-up pulse bag type dust collector top view;
Fig. 3 is the utility model deduster operation principle schematic diagram;
Fig. 4 is the utility model self-loopa deashing filter bag type deduster structure section figure;
Fig. 5 is the utility model self-loopa deashing filter bag type deduster structural plan figure;
Fig. 6 is the utility model arm track segment enlarged drawing;
Fig. 7 is the utility model deashing car parts enlarged drawings;
Fig. 8 is the utility model card parts enlarged drawings;
Fig. 9 is the utility model deashing car moving track schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing illustrated embodiment, the utility model is described in detail.
The utility model self-loopa deashing filter bag type deduster comprises base rack, airflow uniform distribution and guiding device, filter bag room, air-purifying chamber, filter assemblies (filter bag, bag cage, card etc.), self-loopa soot cleaning system, ash bucket, electric control system and heat-insulation layer, platform, stair, simultaneously also supportingly has precoating ash system.
See Fig. 3, self-loopa deashing filter bag type deduster operation principle schematic diagram.
In figure: motor 1, centrifugal fan 2, filter bag 9, card 11, dust 20.
Ash-laden gas from boiler air preheater enters sack cleaner through the flue of smoke inlet, under the suction function of air-introduced machine, flue gas enters filter bag room by inlet baffle door and airflow uniform distribution guiding device, by filter bag time, dust catching in flue gas is got off, clean gas enters clean air-purifying chamber, then enters air after sending into chimney by outlet damper door by blower fan.
This type deduster is outside filtering type, and when dusty gas ecto-entad is through filter bag, dust is delayed at outside filter bag, and clean gas enters air-purifying chamber through filter bag.Along with increasing of filter bag dust stratification, the pressure reduction inside and outside filter bag also increases thereupon, and when pressure reduction reaches deashing capping value, control system sends deashing instruction, and deashing realizes by turning round orientation blowback device.Deashing mechanism is received signal and is just brought into operation, and the clean gas of process being filtered in turn by group (several filter bag) is blown in filter bag.After filter bag is subject to slight tympanites, the dust investing bag wall is peeled off.
See Fig. 4, self-loopa deashing filter bag type deduster structure section figure.
In figure, motor 1, centrifugal fan 2, deashing cover 6, loose flange 7, the track 8 of transverse shifting, filter bag 9, the bag cage 10 rotated on loose joint 3, first Rocker arm 4, telescopic Rocker arm 5, ash removing trolley.
See Fig. 5, self-loopa deashing filter bag type deduster structural plan figure.Parts in figure, track electric driver 17.
Self-loopa deashing filter bag type deduster adopts channel-type air inlet mode, air inlet is equipped with airflow uniform distribution and guiding device, to guarantee that flue gas evenly enters filter bag district after entering deduster, in bag district, be provided with gas channel forward and upwards, make each portion filter bag load even.
Self-loopa deashing filter bag type deduster filters filter type outside adopting, and filter bag is arranged in sets in rectangle point indoor, and several filter pocket mouths by bolt presses with a block plate, can make filter bag be stuck in firmly in card hole, and seal air tight.Filtering bag holes on card adopts laser Digit Control Machine Tool excision forming, cuts the orifice plate of formation after one-time positioning, and Glabrous stings, and precision is high and indeformable.Filter bag forms double sealing structure on card top and card hole inner edge, guarantees tightly completely cutting off between filter chamber and air-purifying chamber.Filter bag elongate section is 60mm × 300mm(or circular and oval), be about 8000mm(or longer).
Filter bag is sack cleaner " heart ", and filtrate is then that can sack cleaner the key of effective use reliably and with long-term, when selecting filter bag, take into full account service condition, must meet the requirement of flue gas characteristic.
According to coal-fired plant boiler flue gas characteristic, the filtrate of deduster must have high temperature resistant, corrosion-resistant, anti-oxidant, folding, the excellent properties that wear-resisting, the life-span is long.
Bag cage is two or three joint combinations, and adopt plug-in type internal locking device, easy disassembling, without the need to special tool(s).
Bag cage is light firm, and all muscle lines all adopt spot welding to connect, and Glabrous stings, and can not damage filter bag.Bag cage, through organosilicon coating and high-temperature baking process, has good high temperature resistant, decay resistance.
Require that the motor that deashing device is used and airduct must possess high temperature resistant, corrosion resistance.Blower housing, airduct and rotary joint should adopt stainless steel material.
Soot cleaning system overlaps chain (motor, reductor drive) by left and right two and drives track (dolly) transverse shifting, and dolly is vertically moved in orbit by chain (motor, reductor drive) drive, shared a set of electrical control.
The utility model motor used, reductor, blower fan motor used is all arranged in outdoor (also blower fan can be arranged in outdoor), and indoor blower housing, the first rocking arm and the rocking arm that can stretch all use corrosion resistant stainless steel material.Trolley track laterally moves, and dolly vertically moves in orbit, carries out deashing.
See Fig. 6, arm guide rail enlarged drawing.In figure, the first Rocker arm 4, pulley 15.
See Fig. 7, deashing car enlarged drawing.In figure, the track 8 of the deashing cover 6 on ash removing trolley, loose flange 7, transverse shifting, track electric driver 17, chain 18.
See Fig. 8, the enlarged drawings such as card.In figure, filter bag 9, bag cage 10, card 11 pressing plate 12, pressure ring 13, bolt 14.
See Fig. 9, deashing car moves and moves schematic diagram with deashing Car Track.
Blowback wind regime comes from the blower fan of air-purifying chamber, also can come from other sources of the gas.Centrifugal fan 2 through being driven by motor 1 connects one and rotates loose joint 3, and the structure rotating loose joint is by two flange therebetween ring-type hard lubrication and seal circle, and installs a bearing additional, connects with the bolt with spring.Connect the first Rocker arm 4 below and connect a rotation loose joint 3 more again by a telescopic Rocker arm 5, telescopic rocking arm is by the flexible pipe being similar to telescopic antenna, inside there are two cover sealing rings, often overlap sealing ring and be made up of 2 split rings (being similar to piston ring of automobile engine) respectively again.If dust catcher chamber is square, and port is arranged on middle again, just need not adopt telescopic fashion.Be connected to the deashing cover 6 on ash removing trolley, and install a loose flange 7 additional, loose flange effect to move up and down, and maintenance and pressing plate 12 tightly coordinate, and seal air tight.Deashing (dolly) can the track 8 of transverse shifting vertically move.Track is pulled by the chain of two cover track electric drivers 17.Deashing (dolly) is pulled by the chain 18 of another set of track electric driver 17.When rail moving stops, just in time stopping at above card mouth, these are realized by track two end positioning device.Deashing cover is aimed at one group of filter bag 9 mouthfuls and is carried out blowback, is enough to the gasification of the dust 20 of filter bag 9 appearance to shake off, crash into ash bucket.Bag cage 10 is contained in filter bag and prevents filter bag to be out of shape under negative pressure.They are together arranged on card 11, and for ensureing sealing, compressed by pressure ring 12, pressure ring is welded on pressing plate 13, is fixed on card with bolt 14.Pressing plate is gone out pit and be used for fastening bolt, neither affect rail moving and ensure again sealing, smooth being laid on card of pressing plate.
Above first Rocker arm 4 end, a pulley 15 is installed, above pulley, is provided with circuit orbit 16.Be used for picking-up first Rocker arm 4.
Embodiment contrast table (for 300MW set thermal power plant power)
Claims (3)
1. one kind has the filter bag type deduster of self-loopa deashing device, it is characterized in that, described deduster comprises base rack, airflow uniform distribution and guiding device, filter bag room, air-purifying chamber, filter assemblies, self-loopa soot cleaning system, ash bucket, electric control system, also comprises heat-insulation layer, platform, stair, precoating ash system, air inlet is provided with airflow uniform distribution and guiding device, gas channel forward and is upwards provided with in filter bag district, filter bag is arranged in sets in rectangle point indoor, several filter pocket mouths one block plate passes through bolt presses, filter bag is made to be stuck in card hole, card is shaped with filtering bag holes, orifice plate Glabrous stings, filter bag forms double sealing structure on card top and card hole inner edge, bag cage is two or three joint combinations, plug-in type internal locking device is adopted to connect, soot cleaning system overlaps chain by left and right two and forms, left and right two cover chain-driving track transverse shifting, dolly is vertically moved in orbit by chain-driving, blower fan connects one and rotates loose joint, connect first rocking arm below, connect one again and rotate loose joint again by a telescopic rocking arm, deashing cover on ash removing trolley installs a loose flange additional, close fit, seal air tight, track two ends are provided with positioner, and bag cage mounted is arranged on card in filter bag, and compress through pressure ring, pressure ring is welded on pressing plate, is fixed by bolts on card, pressing plate is gone out pit and be used for fastening bolt, what pressing plate was smooth is laid on card, above first rocking arm end, a pulley is installed, above pulley, is provided with circuit orbit, hold up rocking arm.
2. a kind of filter bag type deduster with self-loopa deashing device according to claim 1, it is characterized in that, the structure of described rotation loose joint is by two flange therebetween ring-type hard lubrication and seal circle, and installs a bearing additional, connects with the bolt with spring.
3. a kind of filter bag type deduster with self-loopa deashing device according to claim 1, is characterized in that, described telescopic rocking arm is flexible pipe, inside has two cover sealing rings, often overlaps sealing ring and is made up of 2 split rings respectively again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520774608.XU CN205127572U (en) | 2015-10-09 | 2015-10-09 | Strain bag collector with self -loopa ash removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520774608.XU CN205127572U (en) | 2015-10-09 | 2015-10-09 | Strain bag collector with self -loopa ash removal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205127572U true CN205127572U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520774608.XU Expired - Fee Related CN205127572U (en) | 2015-10-09 | 2015-10-09 | Strain bag collector with self -loopa ash removal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205127572U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105233582A (en) * | 2015-10-09 | 2016-01-13 | 岳波 | Filter bag dust remover with self-circulating ash removal device |
| CN107349705A (en) * | 2017-06-16 | 2017-11-17 | 江苏蓝天环保集团股份有限公司 | A kind of dedusting filtering bag easy for removal and installation |
-
2015
- 2015-10-09 CN CN201520774608.XU patent/CN205127572U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105233582A (en) * | 2015-10-09 | 2016-01-13 | 岳波 | Filter bag dust remover with self-circulating ash removal device |
| CN107349705A (en) * | 2017-06-16 | 2017-11-17 | 江苏蓝天环保集团股份有限公司 | A kind of dedusting filtering bag easy for removal and installation |
| CN107349705B (en) * | 2017-06-16 | 2018-06-12 | 江苏蓝天环保集团股份有限公司 | A kind of dedusting filtering bag easy for removal and installation |
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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: 20160406 Termination date: 20171009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |