CN2719380Y - Large-sized negative pressure filter bag type dust collecting chamber - Google Patents

Abstract

The utility model discloses a large-sized negative pressure filter bag type dust collecting chamber used for the separation of solids from air in various occasions, especially adapted to the dust collection for modern industry under the situation of many dirt pits and wide distribution. The dust chamber system is essentially composed of a dust chamber casing 1, a filter bag group 2, a vibrating ash cleaning mechanism 3, a buffering surge-chamber 4, an ash bucket 5, a blower fan 6, an air exhausting duct 7, an ash transmitting device 8, an automatic controlled butterfly valve 9, a sealed baiting device 10, a horizontal air duct 11, a vertical air duct 12, a branch tube and a draft hood 13, etc. The advantages of the device are: the dust exhausting fan and the purified air exhausting duct, together with the filter bag group and the vibrating ash cleaning mechanism, are arranged in the dust chamber; a buffering surge-chamber facilitating passing is also provided at a side of the dust chamber; for the admittance of the dust-laden gas, the dust collecting chamber adopts the homogeneous negative pressure system of the sealed baiting device, the vertical air duct and the horizontal air duct with low wind speed which can collect ash and exhaust dust; and the device gets rid of the abuse of common dust collecting device of air and ash leaking and bad service environment.

Description

A kind of large-scale negative pressure filter bag dirt pocket

A kind of large-scale negative pressure filter bag dirt pocket of technical field, the solid and gas that is used for various occasions separates, and is particularly suitable for the operation of gathering dust under dirt pits is many in the modern industry, the branch cloth cover the is big situation.

Background technology is in modern industry is produced, and it is very extensive, of a great variety that sack cleaner is used.Its basic principle is that the filtrate that utilizes fibrous material to be woven into intercepts dust, filters dusty gas, makes it to reach the purpose of udst separation.Dust granules in the dusty gas is delayed at a Side of filtrate, and the gas that has been cleaned passes filter material layer, discharges from another Side.Dust will reduce the ability that filter bag is handled dusty gas in work Side accumulation thickening, therefore will adopt certain ash removal method, regularly removes the filter bag superficial dust, to recover the ability to work of filter bag.The dust that removes also will in time be carried and exclude, and piles up in that deduster is inner avoiding, and influences deduster and normally moves.Because present relatively large filter bag type dirt chamber is generally positive pressure operation, be easy to emit ash in the use, cause secondary pollution, seal difficult in maintenancely, be difficult to punish.

On the other hand, for the dust pelletizing system that adopts sack cleaner, generally form by sack cleaner, blower fan, dusty gas pipeline, Purge gas pipeline.Often require to be used for the dedusting of or several dust discharge points, but dust discharge is counted too much, too dispersion, then is difficult to accomplish hydraulic equilibrium, the control difficulty, the dust-laden pipeline that the gradient is less than normal or wind speed is on the low side is easy to cause the collection ash to stop up, and makes the undesired even inefficacy of system's operation.Many to dust discharge point and the situation of disperseing if a plurality of systems are set, then will cause cleaner quantity many, maintenance management is difficult for, problems such as investment is big, noise stack.

Therefore, minute cloth cover is big for dust discharge point is many and several identical industrial sites to the greatest extent of dusty gas character, reduce the complexity of dust collection device.The more advanced dust removal installation of operation technique becomes big industrial important selection.

The task of this technology is exactly, multilayer big at the dust discharge number of spots and big plane distribution, the dust-laden air quantity is big and several identical industrial sites to the greatest extent of dusty gas character, a kind of novel large-scale negative pressure filter bag dirt pocket is set, be used to purify dusty gas, realize qualified discharge, to guarantee the air quality and the acoustics environmental quality of workplace and its external environment.

The technical scheme that its technical problem that solves summary of the invention the utility model adopts is: adopt a kind of novel large-scale negative pressure filter bag dirt pocket in dust pelletizing system, this dirt chamber system mainly is made up of the outdoor housing 1 of dirt, filter bag group 2, vibration dust-cleaning mechanism 3, buffering surge-chamber 4, ash bucket 5, blower fan 6, exhausting duct 7, defeated grey facility 8, automatic control butterfly valve 9, airtight blanking device 10, horizontal air channel 11 and vertical air channel 12, arm and draught hood 13 etc.It is characterized in that: dedusting fan, purification wind exhaust duct, filter bag group, dust-collecting and vibrating mechanism all are arranged at the dirt chamber interior together, and the dirt chamber has a side also to be provided with a buffering surge-chamber of being convenient to pass through; The dusty gas air inlet has been adopted low wind speed, can have been collected the even negative pressure system in the airtight vertical air channel and the horizontal air channel of grey dust discharge.Negative pressure dirt chamber provides power by blower fan 6, produce dirt equipment exhaust outlet by the vertical air channel of low speed at each and form stable controllable negative pressure draft with balance total system pressure-reduction level, the dust-laden exhaust gas that extracts each poplar dirt pits enters filter bag and filters, the gas that has purified enters atmosphere by blower fan, and collected dust is discharged by defeated grey equipment and utilized or handle.Each filter bag can balance be brought into play its effectiveness after the key of this utility model was to have solved and maximizes, and had solved balance and controllability that multiple spot gathers dust simultaneously.Because all facilities all are located in the negative pressure chamber, form distinctive black box environment, solved the ash that leaks out of general cleaner, the drawback that environment for use is abominable makes this equipment working service easier, and the life-span is longer, and investment more economizes.

Filter bag group in the utility model is that many groups are provided with.Such as: the top that large-scale negative pressure filter bag dirt pocket is arranged on the industrial premises building, can arrange two row filter bags at inner two Side of top layer, every row filter bag divides many groups to be provided with again, every group has some cylindrical shape filter bags, and support, vibration body and a rapping reducing motor are hung in the top of each filter bag group; Selected several typhoon machines are installed in the middle of the top layer inside and are purified the wind exhaust duct.Around the dirt chamber and the top casing wall can adopt armored concrete, steel plate or other hermetically-sealed constructions, as long as assurance has enough intensity to bear the effect of internal negative pressure and outside natural ventilation pressure.Ash disposal facility in the utility model comprises ash bucket, short spiral ash machine, long spiral ash machine.Generally the following one deck at top layer is provided with the ash bucket group, an ash bucket is set under every group of filter bag, ash bucket both sides inclination angle of inclined plane 〉=60 °, two Side faces can vertically be provided with in addition, the bottom is provided with short spiral ash machine in ash bucket, and short spiral ash machine is responsible for the ash discharge of each ash bucket, through airtight blanking device, enter in the long spiral ash machine under every row filter bag group, the ash material is discharged by long spiral ash machine.

Generally in an end setting of top layer, the door of its turnover adopts the double-layer seal structural shape to buffering surge-chamber in the utility model, is provided with the holddown plate of air-vent and screw-rod structure pattern on every layer of door.Air-vent on the two-layer at ordinary times door all be with the screw rod holddown plate compress cover air-locked.When the people will enter the dirt chamber, the screw rod on the outer door of rotation was earlier removed cover plate, allows surge-chamber by air-vent and external communications equipressure, so that open outer door.And after personnel enter the buffering surge-chamber, close outer door and compress cover plate on it, the air-vent cover plate on the breakdown inner layer door allows the buffering surge-chamber be communicated with equipressure with the dirt chamber interior again, at this moment opens inner layer door, and personnel just can enter the dirt chamber interior.When personnel come out, by opposite step operation.The effect that vertical air channel in the utility model and horizontal air channel have particular importance for this utility model, the dusty gas that process equipment is discharged enters the vertical air channel of major diameter from exhaust column and arm under suction function, enter large diameter horizontal air channel again.Wind speed is controlled at 1-2m/s in the vertical tube, and its friction loss is controlled at minimum degree, even the visual same isopiestic point in whole vertical air channel, with toilet connecting branch hydraulic equilibrium; But under having than coarse granule ash fall, so will establish airtight blanking device in its bottom, in time get rid of dust stratification in vertical air channel, control the air quantity that bleeds simultaneously, blanking device is got rid of dust stratification and is entered process equipment nearby.Equally, adopt the horizontal air channel of big section, wind speed is controlled at 1-2m/s in will managing, also be for its drag losses is controlled at minimum degree, the vertical air channel that connects with toilet is easy to hydraulic equilibrium, but in horizontal air channel, also have under the more coarse grained ash fall, so the spiral ash machine ash discharge to be set in its underpart.The dust stratification that spiral ash machine is discharged is discharged through airtight blanking device.

Description of drawings Fig. 1 is the vertical view of the dust pelletizing system of large-scale negative pressure filter bag dirt pocket, and Fig. 2 is a negative pressure filter bag dirt pocket built-in system elevation.Among the figure 1 for the outdoor housing of dirt, 2 for the filter bag group, 3 for vibration body, 4 for the buffering surge-chamber, 5 for ash bucket, 6 for blower fan, 7 for exhausting duct, 8 for defeated grey facility, 9 for the automatic control butterfly cut down, 10 for airtight blanking device, 11 for horizontal air channel, 12 for vertical air channel, 13 be arm and draught hood.

Specific embodiment Fig. 1,2 also is one of embodiment of the present utility model, in the present embodiment, dusty gas enters vertical air channel 12 by draught hood and arm 13, then through horizontal air channel 11, automatic control butterfly valve 9, ash bucket 5, enter filter bag group 2 and purify, it is outdoor that purified gas compiles discharge dirt by blower fan 6 suction exhausting ducts 7.And the dust that the filter bag inboard is adhered to falls into ash bucket 5, discharges through defeated grey facility 8 and airtight blanking device 9.The filter bag group is carried out the off-line vibration dust-cleaning in turn, before certain group filter bag vibration dust-cleaning, the automatic control butterfly valve 9 in its ash bucket 5 outsides cuts out, and this group filter bag stops air inlet, and its vibration dust-cleaning mechanism 3 implements vibration dust-cleaning, after deashing finishes, automatic control butterfly valve 9 is opened, and this group filter bag state of resuming work is then to next group filter bag implementation off-line ash-clearing, carry out successively, go round and begin again.The whole udst separation process that comprises filter bag ash removal is finished by microcomputer self-control system control.The wind speed in vertical air channel is 1.7m/s in the enforcement, and the wind speed in horizontal air channel is 1.5m/s.Other main structure parameters are:

Filter bag material: terylene needle punched felt

Filter bag size: diameter: 125-150mm;

Length: 4500-6000mm.

Filter bag centre-to-centre spacing: 165-190mm

Every group of filter bag number: 300-500 bar/group

Filter bag group interval: 800mm

Filter bag filters load: 35-45m ³/ m ²H

Purge mode: mechanical vibrator

Amplitude: 8-10cm

Rapping frequency: 90-120 time/min

The rapping time: 30-60s/ time

Shaking cycle: 30-60min

Control mode: microcomputer control, the rapping time and the cycle of operation are adjustable.

Air draft dust content :≤20mg/m ³

Handle gas temperature: normal temperature

Actual operating position of the present utility model shows, this equipment is suitable for multilayer, big plane, voluminous dirt pits, the pending big industrial place of dust-laden total blast volume.A desirable algebraically platform in large-scale dirt chamber even tens monomer sack cleaners adopt this large-scale depression dust-removing chamber filter bag gross area 41430m of this art designs ²More than, handle air quantity more than 120 ten thousand m ³More than/the h.Indoor 10 of the blower fans or more that are provided with of dirt, wherein 2 standby, all the other operations.Can reach 7 layers on the ground in the workshop, more than underground 1 floor height.General top two layers can be respectively filter bag group and blower fan and arrange layer, ash bucket and horizontal air channel layout layer, below which floor the cloth dirt process equipment of buying property.Practice shows that this dust pelletizing system balance adjustment is easy, and production run is normal, and the air draft dust content is low, good dedusting effect, and facility is economic and practical.After cleaner maximized, its equipment was installed quantity and is significantly reduced, and the link that accidents happened reduces, and makes the Maintenance and Repair workload along with minimizing, and management cost reduces.

This system comprises between filter bag, the whole dust-removal system of ash disposal facility, pipe-line system etc. all is in and moves under the negative pressure, has avoided undressed dusty gas and the collected dust contaminated environment that leaks outside, and has guaranteed workshop ambient air environmental quality.The blower fan that dedusting is used also is installed in airtight filter bag dirt chamber interior, and its noise is well isolated, and the acoustic enviroment in industrial place is protected.

This equipment is gone back a part of draft capacity of reusable edible dirt chamber in north heating season, as the additional wind in workshop, with circulated air take the portion of hot loss of heat compensation workshop, can reduce the heating amount in workshop, the saving energy.

Claims (3)

1, a kind of novel large-scale negative pressure filter bag dirt pocket mainly is made up of the outdoor housing of dirt (1), filter bag group (2), vibration dust-cleaning mechanism (3), buffering surge-chamber (4), ash bucket (5), blower fan (6), exhausting duct (7), defeated grey facility (8), automatic control butterfly valve (9), airtight blanking device (10), horizontal air channel (11) and vertical air channel (12), arm and draught hood (13); It is characterized in that dedusting fan, purification wind exhaust duct, filter bag group, dust-collecting and vibrating mechanism are arranged at the dirt chamber interior together all, the dirt chamber has a side also to be provided with a buffering surge-chamber of being convenient to pass through, dedusting fan (6) front end that wherein is enclosed in shell body (1) is connected with purification wind exhausting duct (7), the rear end is directly empty to space, dirt chamber, draught hood (13) connects vertical air channel (12) and is connected with horizontal air channel (11), cross automatic control butterfly valve (9) then and lead to filter bag group (2), filter bag group (2), vibration dust-cleaning mechanism (3) are fixed on the ash bucket (5).

2, the dirt chamber of negative pressure filter bag dirt pocket according to claim 1 is characterized in that the dirt chamber can adopt armored concrete, steel plate.

3, the dirt chamber of negative pressure filter bag dirt pocket according to claim 1, it is characterized in that cushioning surge-chamber generally in an end setting of top layer, the door of its turnover adopts the double-layer seal structural shape, is provided with the holddown plate of air-vent and screw-rod structure pattern p on every layer of door.

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