CN105771454A - Dry pulse bag type dust collector and application thereof - Google Patents

Dry pulse bag type dust collector and application thereof Download PDF

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Publication number
CN105771454A
CN105771454A CN201610304305.0A CN201610304305A CN105771454A CN 105771454 A CN105771454 A CN 105771454A CN 201610304305 A CN201610304305 A CN 201610304305A CN 105771454 A CN105771454 A CN 105771454A
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CN
China
Prior art keywords
filter
blow pipe
gas blow
air
pulse
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CN201610304305.0A
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Chinese (zh)
Inventor
方昱迪
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Suzhou Badger Co Ltd
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Suzhou Badger Co Ltd
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Priority to CN201610304305.0A priority Critical patent/CN105771454A/en
Publication of CN105771454A publication Critical patent/CN105771454A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0039Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
    • B01D46/0041Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023Pockets filters, i.e. multiple bag filters mounted on a common frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04Cleaning filters

Abstract

The invention discloses a dry pulse bag type dust collector and application thereof. The dry pulse bag type dust collector comprises a bracket, a square shell, an ash bucket, a filter and an air blowing device, wherein a synergistic effect is achieved by a lower disk of the filter and an upper Venturi-tube pulse airflow inlet, so that a pulse flushing effect is achieved, pulse airflow flow into a filter bag efficiently and more easily, solid impurities on the filter bag are removed effectively, a very good removing effect is achieved, and the filter bag of the filter does not need to be replaced, namely, the filter bag can be recycled. The dry type pulse bag has a reasonable structure, is easy to detach, is suitable for various filter bags; the novel air blowing device is designed, so that a large amount of pulse airflow is introduced effectively, dust sucked by the filter bag is shaken off, and a best cleaning effect is achieved; meanwhile, equipment has long service life, and is suitable for removing dust from high-temperature acid and alkaline coal-fired flue gas.

Description

Dry type pulse bag deduster and application thereof
Technical field
The invention belongs to field of environment protection equipment, be specifically related to a kind of dry type pulse bag deduster and application thereof, it is possible to be used for coal burning boiler dedusting of burning.
Background technology
Development along with modern industry; the impact that the health of environment and the mankind is caused by dust is day by day serious; effectively administer dust pollution; Environmental protection pay attention to day by day and global warming phenomenon are serious in recent years; in order to advocate carbon reduction; environmental protection industry is flourish, purifies the living environment of the mankind, it has also become proprietary common recognition.In order to safeguard that production environment is clean, it is necessary to cleaning is by the place of dust pollution in time.Cleaner unit, especially sack cleaner, be widely used in the udst separations of various industrial and mining establishment non-fiber industrial dust such as metallurgy, building materials, machinery, chemical industry, mine and the recovery of material.But, existing sack cleaner, there is the drawbacks such as ash-removal effect is undesirable, purification efficiency is low, life-span of the filter bag is short, maintenance load is big, normal, the effective use of filter are had a strong impact on, so, need the structure to existing filter badly and improve so that deashing is convenient, efficiency is high, need to adopt blowning installation to filter deashing, to improve dust removing effects.Existing be generally adopted independent air gun mode or blowning installation send high-power gas please ash to filter, the former does not speak more, it has not been convenient to commercial Application, and the latter presently, there are gas transmission blow-by, trachea installs the problems such as inconvenient, it is therefore desirable to design new blowning installation with better environment purification.
The principle of literary composition mound effect is then when blowing air over obstacle, above the lee face of obstacle, near ports air pressure is relatively low, thus producing adsorption and causing the flowing of air, it is exactly air-flow from the coarse to fine, to accelerate gas flow rate, gas is made to form " vacuum " district at the rear side of venturi outlet.Only for the highly energy-consuming cleaner unit of high-voltage pulse air-flow, there is high pressure resistant, the stabilization to whole equipment and a raising disadvantageous difficult problem in service life in existing Venturi tube;The problem of especially desirable solution is that existing venturi tube structure is all independently of outside filter, this exists that the position that takes up space is big, install that not mate, assemble loaded down with trivial details one be class problem, and prior art does not have the way what is good to solve, do not integrate owing to filter production field and Wen's structure manufacture field on the one hand, only just have at special occasions and a bit occur simultaneously, two aspect Wen's dead loads are big, are unfavorable for filter, especially the stablizing of filter bag.Therefore existing Venturi tube is not suitable for cleaning filter, and it is intended merely to mixed dust and water effectively, in order to make dust assemble;And air-flow incidence narrow width, pulse efficiency are very low.Coal-fired flue-gas has higher temperature, thus forming good mobility, but when arriving binding domain, along with the decline of flue-gas temperature, dust settles gradually, very unfavorable to filtering.
Summary of the invention
It is an object of the invention to provide a kind of dry type pulse bag deduster, be used for coal burning boiler dedusting of burning, be conducive to environmental protection to develop.
To achieve the above object of the invention, the technical solution used in the present invention is: a kind of dry type pulse bag deduster, including support, square casing, ash bucket, filter and blowning installation;Described square casing is installed on support;Described ash bucket is installed on below square casing;Described housing bottom surface opening;Described ash bucket end face opening;Described housing connects with ash bucket;The base area of described housing is consistent with the top surface area of described ash bucket;Two symmetrical sidewalls of described housing are respectively equipped with gas access and gas outlet;Described enclosure interior is arranged over installing plate;Described filter is installed on described installing plate;Described hopper bottom is provided with dust outlet;Described filter includes dish on filter, filter lower wall and filter bag between dish, filter lower wall on filter;On described filter, dish includes filter support plate and the air pulse entrance being located in the middle part of filter support plate;Described air pulse entrance is venturi tube structure;Described air pulse entrance lower end is positioned at below filter support plate;It is provided with bulge-structure in the middle of described filter lower wall;Described bulge-structure is the hollow-core construction of top closure;Described blowning installation includes air bucket, diaphragm valve, interior gas blow pipe and outer gas blow pipe;Described air bucket, diaphragm valve are positioned at hull outside;Described interior gas blow pipe is positioned at enclosure interior;Described outer gas blow pipe traverse housing sidewall;Described air bucket is provided with air outlet conduits;Described air outlet conduits is connected with the air intake of described diaphragm valve by flange;Described outer gas blow pipe is connected with the air outlet slit of described diaphragm valve by flange;One end that described outer gas blow pipe is positioned at housing is cased with truncated cone-shaped sealing ring;The bottom surface of described truncated cone-shaped sealing ring contacts with case inside wall;Described interior gas blow pipe is provided with gas blow pipe sleeve pipe near one end of outer gas blow pipe;Described gas blow pipe sleeve pipe is provided with the structure mated with described truncated cone-shaped sealing ring outer surface inside the one end away from interior gas blow pipe;Described interior gas blow pipe is provided with venthole;Described venthole is positioned at directly over described air pulse entrance;Described hull outside wall is provided with heat-insulation layer.
In the present invention, filter bag includes supporter and the bag body of parcel supporter, it is possible to for existing non-woven fabrics filter bag, fabric filter bag, generally circular;Supporter is generally adopted elastic piston ring, can form tight type contact, it is to avoid smoke spillage;Filter bag upper end is arranged on filter support seat, and lower end is arranged on filter lower wall, it is possible to connect filter upper lower burrs.Square casing has six sidewalls, and diapire is hatch frame, connects with ash bucket, in four sidewalls, is respectively provided with gas access and gas outlet on two symmetrical sidewalls, and another two sidewall generally seals;Flue gas is entered by the gas access of housing, and air is gone out from gas outlet, and middle through filter, dust is intercepted absorption by filter, thus reaching the effect of flue gas ash removal;Adopt the housing of square structure, be conducive to the installation of the parts such as filter on the one hand, mainly avoid gas leakage, namely prevent partial fume from directly going out from gas outlet without filter.
Those skilled in the art know, and housing, ash bucket are all hollow-core construction, and according to actual installation position, ash bucket is installed on below housing, and ash bucket end face size is in the same size with housing bottom surface, is all hatch frame, connect thus enclosure interior is internal with ash bucket;Thus, the dust that the filter bag that enclosure interior is installed is shaken off all can directly fall to ash bucket, is absent from ash dead angle, collects then through the dust outlet below ash bucket and gets rid of.
Filter is vertically installed at enclosure interior, forms smoke filtration layer;Stable installation filter can be facilitated by being provided above installing plate in enclosure interior, the distance of installing plate and housing top wall does not limit, generally it is beneficial to filter to install, the installation quantity of filter, arrangement mode can be selected according to housing size, filter size and flue gas flow, it is to avoid smoke spillage.
Filter support plate is in order to bear the weight of filter, and filter is arranged on the installing plate of enclosure interior by filter support plate, and filter can arrange installing hole on the supporting plate, utilizes screw (bolt) can install filter easily;Preferred filter support plate is formed around baffle plate, and the baffle plate that surrounding is connected so that the gravity of filter is uniformly dispersed, can be conducive to gripper shoe stable with the active force of installing plate, ensure that filter is operationally stable;It is preferred that, filter support plate is provided with multiple connecting plate, connecting plate can connect the baffle plate of different azimuth, baffle plate and air pulse entrance sidewall can also be connected, connecting plate can also be set between connecting plate again, by these connecting plates further such that active force is uniformly dispersed, it is to avoid form stress central hot water supply system, be conducive to the strength enhancing of filter support plate.Air pulse entrance in the middle part of filter support plate refers to that filter support plate center is consistent with air pulse entrance center, namely whole filter can regard a symmetrical structure as, make filter support plate uniform force, it is possible to effectively alleviate active force and abrasion suffered by filter and installing plate installed surface.Air pulse entrance is hollow tubular, bottom is cylindrical, top is truncated cone-shaped, two parts constitute venturi tube structure, upper portion side wall tilts, and lower sides is vertical, and cylindrical height is 1.2~1.5 times that truncated cone-shaped is high, pulse efficiency be can effectively promote, existing Venturi tube and the unmatched problem of filter bag overcome simultaneously.The present invention creatively on the filter dish the air pulse entrance of venturi tube structure is set, one-body molded with filter support plate, effectively promote pulse efficiency;The joint face of filter support plate and air pulse entrance side is positioned at air pulse entrance upper cone bench-type sidewall, air pulse entrance lower end is positioned at below filter support plate, adopt integral forming process simultaneously, ensure the stability of dish on filter, the defect easily rocked when overcoming filter shakiness, the work that prior art exists.
Be provided with bulge-structure in the middle of filter lower wall, with filter interior in, bulge-structure is that ecto-entad is protruding, namely by filter bottom inwardly protruding;The invention in filter bottom, bulge-structure is set, when air pulse undershoot to bulge-structure, be effectively formed bounce-back, play the effect of distribution air-flow, enter interruption-forming cooperative effect with top Venturi type air pulse, increase pulse lavage effect.Bulge-structure is the hollow-core construction of top closure, i.e. the bulge-structure bottom opening of the present invention, and such as circular platform type is protruding, up-small and down-big, microcephaly one end is closed, major part one end open, from microcephaly to the one of major part section be hollow, alleviate filter body weight promoting while pulsatile effect.Preferably, bulge-structure top to sidewall bottom arranges connecting plate, promotes the intensity of filter lower wall, it is to avoid due to the impulsive force of air pulse be likely to bring to the destruction of stability between lower wall and filter bag.It is further preferred that medial wall, air pulse entrance upper end is provided with connecting rod, connecting rod is connected with bulge-structure top by bracing piece.Equal to the connecting device being provided with between lower wall on the filter except filter bag, it is ensured that filter is stable.Can arrange two openings of symmetry at venturi tube structure top inner side wall, connecting rod rides on two openings;The connection of bracing piece and bulge-structure can adopt screw to connect, convenient dismounting.
Being blown in filter sock by diaphragm valve by the air of air bucket, the gas blow pipe being fully located at enclosure interior is interior gas blow pipe, and the gas blow pipe through housing sidewall is outer gas blow pipe;Outer gas blow pipe is connected with outer gas blow pipe by sleeve pipe, good seal, convenient disassembly, reduces artificial.Interior gas blow pipe is installed on a mounting board or is arranged on case inside wall, as long as in enclosure interior stably.The parts such as air bucket, outer gas blow pipe and diaphragm valve are arranged according to actual place, it is possible to pulse gas is carried.
Be perpendicular to the waist place straight line on base for rotating shaft with right-angled trapezium, all the other each limits rotate and the defined solid of the curved surface that formed is called round platform;Rotating shaft is called the axle of round platform, the right-angled trapezium upper and lower end, rotates formed disc and is called the upper and lower bottom surface of round platform, another waist rotates formed curved surface and is called the side of round platform, and on side, the waist of the right-angled trapezium of each position is called the bus of round platform, and the height of round platform is the distance between upper and lower bottom surface.The upper bottom surface of the truncated cone-shaped sealing ring that the present invention utilizes is the bottom surface that area is little, and during practical application, truncated cone-shaped sealing ring is enclosed within outer gas blow pipe, relative to interior gas blow pipe, be equivalent to form a gradually thick change, when gas blow pipe sleeve pipe contacts with truncated cone-shaped sealing ring, under propelling movement power, contact can be more and more tighter, sealing ring is close to case inside wall, thus reaching efficient sealed effect, and convenient disassembly, more it is damaged from gas blow pipe, housing etc., achieves beyond thought technique effect.
Gas blow pipe casing pipe sleeve is in one end of interior gas blow pipe, and the length exposed can select as required, it is desirable to just compress with sealing ring;Away from being provided with the surface mated with truncated cone-shaped sealing ring outer surface inside one end of interior gas blow pipe on sleeve pipe, when sleeve pipe is subject to thrust, inner side and sealing ring energy good contact, and press tighter and tighter along the outer surface that sealing ring is gradually thick, it is ensured that seal.Preferably, the height of truncated cone-shaped sealing ring is the half that outer gas blow pipe is positioned at the length that enclosure interior is divided, it is to avoid owing to the impulsive force of air pulse is likely between internal gas blow pipe and the outer gas blow pipe brought the destruction of stability.It is further preferred that interior gas blow pipe is consistent with the pipe diameter size of outer gas blow pipe.Not only contributing to the reduction of production cost, standard is unified;It is more beneficial for the coupling between each contact surface to seal.Interior gas blow pipe does not contact mutually with outer gas blow pipe, leaves certain interval, is conducive to sleeve pipe and round platform sealing gasket to be tightly combined.
Diaphragm valve belongs to prior art, with air ports, it is provided that impulsive force, but existing diaphragm valve connects trachea by swimming sword;The present invention arranges flange at diaphragm valve air inlet/outlet first, and the installation overcoming the trip land that existing diaphragm valve air inlet/outlet is arranged is inconvenient, the process that tightens is fragile, pipeline causes the defects such as damage.Venthole on interior gas blow pipe and filter matching, namely pulse source of the gas is directly over the air pulse entrance of filter, such gas by air bucket through diaphragm valve, form air pulse, then through outer gas blow pipe to interior gas blow pipe, last from venthole, the filter bag blowing into filter through the air pulse entrance of venturi tube structure, reach to remove the purpose of filter bag dust.
The present invention is provided with vibrating device in ash bucket lateral wall, it is possible to knock or rapping ash bucket, thus being conducive to dust releasing, being more easy to and discharging from dust outlet;High charge level detecting device it is provided with, it is to avoid dust accumulation inside ash bucket.Ash bucket disclosed by the invention is truncated rectangular pyramids structure, and upper bottom surface is similar rectangle or square, and side is isosceles trapezoid, and according to installment state, the upper bottom surface of ash bucket is consistent with housing bottom surface;In order to fall, ash is smooth and easy, no backup, and the incline of truncated rectangular pyramids and the angle of upper bottom surface are 65~85 degree.
The present invention selects glass rock wool as heat-insulation layer, the high-temperature resistant result having had, and insulation material acid and alkali caustic corrosion, has good mechanical strength simultaneously;Insulation is conducive to increasing smoke filtering effect.
The invention also discloses the application in flue gas ash removal of the above-mentioned dry type pulse bag deduster;Mainly for flue gas be coal-fired flue-gas, comprise the following steps: (1) open diaphragm valve, pulse of compressed air is entered the air pulse entrance of filter;(2) vibrating device of ash bucket lateral wall is opened;(3) flue gas enters enclosure interior from square casing gas access;It is then passed through filter, namely completes flue gas ash removal;Described step (1), step (2) and step (3) carry out simultaneously or asynchronously carry out.The present invention can when filtering exhaust gas dust, and unbalanced pulse rinses simultaneously, is blown off by dust, it is also possible to time opening pulse, it is to avoid unnecessary cleaning;Vibration can also be opened, it is ensured that fall smooth and easy, the no backup of ash simultaneously.
Owing to technique scheme is used, the present invention compared with prior art has the advantage that
1. present invention firstly discloses a kind of new dry type pulse bag deduster, be exclusively used in burning coal burning boiler dedusting, the air pulse entrance of venturi tube structure is creatively set in the middle of dish on the filter, gas flowing is produced impact, adds air blast incidence width;The air pulse entrance of venturi tube structure is one-body molded with filter support plate, effectively promotes pulse efficiency;Air pulse entrance lower end is positioned at below filter support plate, adopts integral forming process simultaneously, ensures the stability of dish on filter, the defect easily rocked when overcoming filter shakiness, the work that prior art exists.
2. the present invention is provided with bulge-structure first in the middle of filter lower wall, by filter bottom inwardly protruding, when air pulse undershoot to bulge-structure, it is effectively formed bounce-back, play the effect of distribution air-flow, enter interruption-forming cooperative effect with top Venturi type air pulse, increase pulse lavage effect;The hollow-core construction that bulge-structure is top closure is set simultaneously, while promoting pulsatile effect, alleviates filter body weight, overcome the difficult problem that prior art filter can increase the weight of.
3. the present invention creatively arranges sleeve pipe and sealing ring between inside and outside gas blow pipe, ensures sealing stability when big flow rate of gas is passed through, overcomes the defect of prior art poor sealing;Arranging flange at diaphragm valve air inlet/outlet, easy for installation, during maintenance, dismounting is quickly, and saving is artificial, and flange avoids the damage to gas pipeline simultaneously, overcomes prior art weld and connects the defect of maintenance difficult, the trip sword unstable fragile pipeline of connection.
4. blowning installation disclosed by the invention is prepared uncomplicated, and hinge structure is more simple, and air pulse can be made efficiently to pour in filter bag, effectively removes the solid impurity on filter bag, and removal effect is fabulous;Especially each several part is easy to connect, and dismounting is easily, it is thus also avoided that the prior art damage to material, achieves beyond thought effect
5. dry type pulse bag deduster disclosed by the invention, rationally, dismounting easily, is suitable for multiple filter bag to structure composition;By the design of novel blowning installation, effectively introducing a large amount of air pulses, filter bag is inhaled the dust having and shakes off, cleaning performance reaches the best;Simultaneously service life of equipment is long, it is adaptable to high temperature, Acidity of Aikalinity coal-fired flue-gas dust removal process.
Accompanying drawing explanation
Fig. 1 is dry type pulse bag deduster structural representation;
Fig. 2 is the structural representation of dish on filter;
Fig. 3 is filter lower disc schematic diagram;
Fig. 4 is outer gas blow pipe, interior gas blow pipe and gas blow pipe sleeve structure schematic diagram;
Fig. 5 is housing and ash bucket structural representation;
Wherein, the structure 58 that support 1, square casing 2, glass rock wool heat-insulation layer 21, installing plate 22, gas access 23, gas outlet 24, ash bucket 3, dust outlet 31, vibrating device 32, high charge level detecting device 33, filter 4, filter support plate 41, air pulse entrance 42, baffle plate 43, connecting plate 44, screwed hole 45, circular platform type projection 46, long connecting plate 47, blowning installation 5, air bucket 51, diaphragm valve 52, interior gas blow pipe 53, outer gas blow pipe 54, truncated cone-shaped sealing ring 55, gas blow pipe sleeve pipe 56, venthole 57 and truncated cone-shaped sealing ring match.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described:
Embodiment one
Seeing accompanying drawing 1, a kind of dry type pulse bag deduster, including support 1, square casing 2, ash bucket 3, filter 4 and blowning installation 5;Square casing is installed on support, and ash bucket is installed on below square casing;Housing bottom surface opening, ash bucket end face opening, hopper bottom is provided with dust outlet, and (this figure is in order to succinctly, not mark, it is specifically shown in Fig. 5), ash bucket lateral wall is provided with vibrating device 32, is provided with high charge level detecting device 33 inside ash bucket, ash bucket is truncated rectangular pyramids structure, and the incline of truncated rectangular pyramids and the angle of upper bottom surface are 65 degree;The base area of housing is consistent with the top surface area of ash bucket, and housing connects with ash bucket;Enclosure interior is arranged over installing plate 22, filter is installed on installing plate, filter includes dish on filter, filter lower wall and filter bag between dish, filter lower wall on filter, on filter, dish all leaves the groove installing filter bag with filter lower wall, it is possible to fix each parts by the mode of existing encapsulating;On filter, dish includes filter support plate and the air pulse entrance being located in the middle part of filter support plate, is provided with circular platform type bulge-structure in the middle of filter lower wall, is specifically shown in accompanying drawing 2,3;Two symmetrical sidewalls of housing are respectively equipped with gas access 23 and gas outlet 24;Hull outside wall is provided with glass rock wool heat-insulation layer 21;Blowning installation includes air bucket 51, diaphragm valve 52, interior gas blow pipe 53 and outer gas blow pipe 54;Air bucket, diaphragm valve are positioned at hull outside, and interior gas blow pipe is positioned at enclosure interior, outer gas blow pipe traverse housing sidewall;The air outlet conduits of air bucket is connected with the air intake of diaphragm valve by flange;Gas blow pipe is connected with the air outlet slit of diaphragm valve by flange;Outer gas blow pipe is positioned at one end of housing and is cased with truncated cone-shaped sealing ring 55;The bottom surface of truncated cone-shaped sealing ring contacts with case inside wall;Interior gas blow pipe is provided with gas blow pipe sleeve pipe 56 near one end of outer gas blow pipe;Gas blow pipe sleeve pipe is provided with the structure mated with truncated cone-shaped sealing ring outer surface inside the one end away from interior gas blow pipe;Interior gas blow pipe is provided with venthole 57;Venthole is positioned at directly over described air pulse entrance;Interior gas blow pipe is arranged on case inside wall, and the height of truncated cone-shaped sealing ring is the half that outer gas blow pipe penetrates the length of housing parts, and interior gas blow pipe is consistent with the pipe diameter size of outer gas blow pipe, and interior gas blow pipe does not contact mutually with outer gas blow pipe.
Referring to accompanying drawing 2, for the structural representation of dish on filter, on filter, dish includes filter support plate 41 and the air pulse entrance 42 being located in the middle part of filter support plate;Filter support plate is formed around baffle plate 43, and is provided with multiple connecting plate 44, is additionally provided with the screwed hole 45 for installing;Air pulse entrance is venturi tube structure, and bottom is cylindrical, and top is truncated cone-shaped, and cylindrical height is 1.2 times that truncated cone-shaped is high;Air pulse entrance lower end is positioned at below filter support plate;Filter support plate center is consistent with air pulse entrance center, and air pulse enters in the middle part of filter support plate so that filter support plate uniform force, it is possible to effectively alleviate active force and abrasion suffered by filter and installing plate installed surface.
Referring to accompanying drawing 3, for filter lower disc schematic diagram, left figure vertically uses state diagram, centre is provided with circular platform type projection 46, up-small and down-big, and microcephaly one end is closed, major part one end open, from microcephaly to the one of major part section be hollow, when air pulse undershoot to bulge-structure, be effectively formed bounce-back, play the effect of distribution air-flow, enter interruption-forming cooperative effect with top Venturi type air pulse, increase pulse lavage effect, while promoting pulsatile effect, alleviate filter body weight.In order to embody the medial wall of bulge-structure and hollow, in figure, position relationship and real use state is out of position, and that namely in figure, area is little faces down, and sees right figure;Along bulge-structure medial wall, bulge-structure top to sidewall bottom arranges long connecting plate 47, promotes the intensity of filter lower wall, it is to avoid due to the impulsive force of air pulse be likely to bring to the destruction of stability between lower wall and filter bag.
Referring to accompanying drawing 4, for outer gas blow pipe, interior gas blow pipe and gas blow pipe sleeve structure schematic diagram, outer gas blow pipe 54 one end is cased with truncated cone-shaped sealing ring 55;Gas blow pipe casing pipe sleeve 56 is in interior gas blow pipe 53 one end, and inner side is provided with the structure 58 matched with truncated cone-shaped sealing ring, such that it is able to be tightly connected inside and outside gas blow pipe;One end of interior gas blow pipe is provided with gas blow pipe sleeve pipe;The other end can be used for being arranged on case inside wall;And it being provided with venthole 57, venthole and filter matching, such gas through diaphragm valve, then through outer gas blow pipe to interior gas blow pipe, is finally blown into filter from venthole by air bucket, reaches to remove the purpose of solid impurity.
Accompanying drawing 5 is support 1, square casing 2 and ash bucket 3 structural representation, ash bucket 3 is installed on below square casing 2, and the base area of square casing is consistent with the top surface area of ash bucket, and square casing connects with ash bucket, hopper bottom is provided with dust outlet 31, and its shape is without influence on the effect of the present invention;Square casing lateral wall is provided with glass rock wool heat-insulation layer 21, and ash bucket is truncated rectangular pyramids structure, and ash bucket lateral wall is provided with vibrating device 32.
Embodiment two
Dry type pulse bag deduster, including support, square casing, ash bucket, filter and blowning installation;Square casing is installed on support, and ash bucket is installed on below square casing;Housing bottom surface opening, ash bucket end face opening, hopper bottom is provided with dust outlet, and ash bucket lateral wall is provided with vibrating device, is provided with high charge level detecting device inside ash bucket, and ash bucket is truncated rectangular pyramids structure, and the incline of truncated rectangular pyramids and the angle of upper bottom surface are 65 degree;The base area of housing is consistent with the top surface area of described ash bucket, and housing connects with ash bucket;Enclosure interior is arranged over installing plate, and filter is installed on described installing plate, and filter includes dish on filter, filter lower wall and filter bag between dish, filter lower wall on filter;On filter, dish includes filter support plate and the air pulse entrance being located in the middle part of filter support plate;Air pulse entrance is venturi tube structure, and bottom is cylindrical, and top is truncated cone-shaped, and cylindrical height is 1.5 times that truncated cone-shaped is high;Air pulse entrance lower end is positioned at below filter support plate;Filter support plate center is consistent with air pulse entrance center;The circular platform type the same with embodiment one it is provided with protruding in the middle of filter lower wall, medial wall, air pulse entrance upper end is provided with connecting rod, connecting rod is connected with circular platform type protruding apex by bracing piece, bracing piece can adopt screw to be connected with circular platform type projection, equal to the connecting device being provided with between lower wall on the filter except filter bag, ensure that filter is stable, connecting rod constitutes T-shaped structure with bracing piece, connecting rod two ends are separately mounted to air pulse inlet inside wall, bracing piece one end is arranged in filter lower wall circular platform type projection, on filter, dish all leaves the groove installing filter bag with filter lower wall, each parts can be fixed by the mode of existing encapsulating;Two symmetrical sidewalls of housing are respectively equipped with gas access and gas outlet;Hull outside wall is provided with glass rock wool heat-insulation layer, and thickness mates with flue gas flow;Blowning installation is consistent with embodiment one.
Embodiment three
A kind of dry type pulse bag deduster, agent structure is consistent with embodiment one, including support, square casing, ash bucket, filter and blowning installation;Wherein having following part dimension difference 1. ash bucket is truncated rectangular pyramids structure, and the incline of truncated rectangular pyramids and the angle of upper bottom surface are 75 degree;2. air pulse entrance is venturi tube structure, and bottom is cylindrical, and top is truncated cone-shaped, and cylindrical height is 1.4 times that truncated cone-shaped is high.
Coal-fired flue-gas enters enclosure interior from square casing gas access, through filter, carries out flue gas ash removal;Simultaneously every 20 minutes unlatching diaphragm valves, pulse of compressed air is entered the air pulse entrance of filter, bleed pressure is more than 0.5Mpa, pulse lavage order and time is controlled with differential pressure, avoid unnecessary cleaning, filter arranges in the middle of dish the air pulse entrance of venturi tube structure, gas flowing is produced impact, adds air blast incidence width;When air pulse undershoot to lower wall bulge-structure, it is effectively formed bounce-back, plays the effect of distribution air-flow, enter interruption-forming cooperative effect with top Venturi type air pulse, increase pulse lavage effect;More simply making air pulse efficiently pour in filter bag, effectively remove the solid impurity on filter bag, removal effect is fabulous, it is not necessary to changes filter sock, can reuse, and can extend filter life, saves the energy;Prompting according to high charge level detecting device, opens the vibrating device of ash bucket lateral wall, accelerates the ash that falls.Utilizing the dry type pulse bag deduster of the present invention, to the dust filtration efficiency of coal-fired flue-gas up to 98%, other indexs also comply with the emission standard of air pollutants for boilers of country's promulgation.

Claims (10)

1. a dry type pulse bag deduster, including support, square casing, ash bucket, filter and blowning installation;Described square casing is installed on support;Described ash bucket is installed on below square casing;Described housing bottom surface opening;Described ash bucket end face opening;Described housing connects with ash bucket;The base area of described housing is consistent with the top surface area of described ash bucket;Two symmetrical sidewalls of described housing are respectively equipped with gas access and gas outlet;Described enclosure interior is arranged over installing plate;Described filter is installed on described installing plate;Described hopper bottom is provided with dust outlet;Described filter includes dish on filter, filter lower wall and filter bag between dish, filter lower wall on filter;On described filter, dish includes filter support plate and the air pulse entrance being located in the middle part of filter support plate;Described air pulse entrance is venturi tube structure;Described air pulse entrance lower end is positioned at below filter support plate;It is provided with bulge-structure in the middle of described filter lower wall;Described bulge-structure is the hollow-core construction of top closure;Described blowning installation includes air bucket, diaphragm valve, interior gas blow pipe and outer gas blow pipe;Described air bucket, diaphragm valve are positioned at hull outside;Described interior gas blow pipe is positioned at enclosure interior;Described outer gas blow pipe traverse housing sidewall;Described air bucket is provided with air outlet conduits;Described air outlet conduits is connected with the air intake of described diaphragm valve by flange;Described outer gas blow pipe is connected with the air outlet slit of described diaphragm valve by flange;One end that described outer gas blow pipe is positioned at housing is cased with truncated cone-shaped sealing ring;The bottom surface of described truncated cone-shaped sealing ring contacts with case inside wall;Described interior gas blow pipe is provided with gas blow pipe sleeve pipe near one end of outer gas blow pipe;Described gas blow pipe sleeve pipe is provided with the structure mated with described truncated cone-shaped sealing ring outer surface inside the one end away from interior gas blow pipe;Described interior gas blow pipe is provided with venthole;Described venthole is positioned at directly over described air pulse entrance;Described hull outside wall is provided with heat-insulation layer.
2. dry type pulse bag deduster according to claim 1, it is characterised in that: described interior gas blow pipe is installed on a mounting board;Or described interior gas blow pipe is arranged on case inside wall;The height of described truncated cone-shaped sealing ring is the half that outer gas blow pipe penetrates the length of housing parts;Described interior gas blow pipe is consistent with the pipe diameter size of outer gas blow pipe;Described interior gas blow pipe does not contact mutually with outer gas blow pipe.
3. dry type pulse bag deduster according to claim 1, it is characterised in that: described filter support plate is formed around baffle plate;Described filter support plate is provided with multiple connecting plate;The bottom of described venturi tube structure is cylindrical, and top is truncated cone-shaped;The height of described cylinder is 1.2~1.5 times that truncated cone-shaped is high.
4. dry type pulse bag deduster according to claim 1, it is characterised in that: the bulge-structure being provided with in the middle of described filter lower wall is circular platform type bulge-structure;The top of described bulge-structure arranges connecting plate to sidewall bottom.
5. dry type pulse bag deduster according to claim 1, it is characterised in that: medial wall, described air pulse entrance upper end is provided with connecting rod, and connecting rod is connected with bulge-structure top by bracing piece.
6. dry type pulse bag deduster according to claim 1, it is characterised in that: described ash bucket lateral wall is provided with vibrating device;High charge level detecting device it is provided with inside described ash bucket;Described ash bucket is truncated rectangular pyramids structure;The incline of described truncated rectangular pyramids and the angle of upper bottom surface are 65~85 degree.
7. dry type pulse bag deduster according to claim 1, it is characterised in that: described heat-insulation layer is glass rock wool heat-insulation layer.
8. dry type pulse bag deduster application in flue gas ash removal described in claim 1.
9. application according to claim 8, it is characterised in that: described flue gas is coal-fired flue-gas.
10. application according to claim 8, it is characterised in that comprise the following steps: (1) opens diaphragm valve, and pulse of compressed air enters the air pulse entrance of filter;(2) vibrating device of ash bucket lateral wall is opened;(3) flue gas enters enclosure interior from square casing gas access;It is then passed through filter, namely completes flue gas ash removal;Described step (1), step (2) and step (3) carry out simultaneously or asynchronously carry out.
CN201610304305.0A 2016-05-10 2016-05-10 Dry pulse bag type dust collector and application thereof Pending CN105771454A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112169471A (en) * 2020-10-22 2021-01-05 王莉 Dust remover for waste gas treatment of glass cellar

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Publication number Priority date Publication date Assignee Title
CN2062252U (en) * 1989-12-29 1990-09-19 吴江除尘设备厂 Low pressure side spray pulse bag duster
JP2005144296A (en) * 2003-11-13 2005-06-09 Plantec Inc Bag filter cloth
CN201855633U (en) * 2010-10-29 2011-06-08 洛阳万基金属钠有限公司 Chlorine gas deduster
CN203196478U (en) * 2012-12-17 2013-09-18 杭州燃油锅炉有限公司 Pulse bag-type dust collector and ash bucket thereof
CN204447576U (en) * 2015-01-14 2015-07-08 苏州欧蓝森环境设备有限公司 A kind of long bag off-line pulse bag type dust collector
CN104857782A (en) * 2015-06-13 2015-08-26 黄浩 Double-layered efficient bag dust collector

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2062252U (en) * 1989-12-29 1990-09-19 吴江除尘设备厂 Low pressure side spray pulse bag duster
JP2005144296A (en) * 2003-11-13 2005-06-09 Plantec Inc Bag filter cloth
CN201855633U (en) * 2010-10-29 2011-06-08 洛阳万基金属钠有限公司 Chlorine gas deduster
CN203196478U (en) * 2012-12-17 2013-09-18 杭州燃油锅炉有限公司 Pulse bag-type dust collector and ash bucket thereof
CN204447576U (en) * 2015-01-14 2015-07-08 苏州欧蓝森环境设备有限公司 A kind of long bag off-line pulse bag type dust collector
CN104857782A (en) * 2015-06-13 2015-08-26 黄浩 Double-layered efficient bag dust collector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112169471A (en) * 2020-10-22 2021-01-05 王莉 Dust remover for waste gas treatment of glass cellar

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