CN205598796U - Boiler flue gas dust removal device - Google Patents

Abstract

The utility model discloses a boiler flue gas dust removal device, including square casing, ash bucket, filter and pulse valve, the ash bucket is installed in square casing below, and the ash bucket bottom is equipped with that dust outlet, lateral wall are equipped with vibrating device, inside is equipped with high material level detection device, and the ash bucket be four prismatic table structure, and square casing communicates with the ash bucket, square casing is equipped with air inlet and air outlet, and inside top is equipped with mounting panel, lateral wall installation temperature alarm, the filter is installed on the mounting panel, and the filter includes filter hanging wall, filter lower wall and filter bag, and the filter hanging wall includes filter backup pad and pulsating gas flow entry, and the pulse valve is installed in the roof inboard, directly over the pulsating gas flow of filter entry. The utility model discloses the solid impurity on the filter bag is effectively got rid of in pouring the filter bag to more simple messenger pulsating gas flow high efficiency, and it is fabulous to get rid of the effect, need not to change the filter filter bag, can reuse.

Description

Dust removing device for flue gas of boiler

Technical field

This utility model belongs to field of environment protection equipment, is specifically related to a kind of dust removing device for flue gas of boiler, may 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 the most 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 use blowning installation to filter deashing, to improve dust removing effects.Existing general employing independent air gun mode or blowning installation send high-power gas please be grey to filter, the former does not speaks 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 more preferable environment purification.

Panel air filter is widely used in the industries such as iron and steel, electronics, chemical industry, automobile, environmental protection and electric power, is the best inlet air filtration equipment of centrifugal dust-removing equipment, and filtering material is made up of synthetic glass fiber, and its dust containing capacity is big, uses the cycle long；Engineer applied has and is divided into low energy consumption and the big class of high energy consumption cleaner unit two by cleaner resistance height, how many wet type pulse dust collectors of energy consumption.The enterprise that China presently, there are small scale is a lot, and the economic strength and the technical merit that process the three wastes are relatively low, and environment causes the biggest harm；The world today faces the severe challenge entirely asking financial crisis and climate change, it is necessary to continue to rely upon scientific and technical innovation development low-carbon economy, it is achieved environmental economy is advanced altogether.

Summary of the invention

The purpose of this utility model is to provide a kind of dust removing device for flue gas of boiler, is used for coal burning boiler dedusting of burning, beneficially environmental protection development.

For reaching above-mentioned utility model purpose, the technical solution adopted in the utility model is: a kind of dust removing device for flue gas of boiler, including square casing, ash bucket, filter and pulse valve；Described ash bucket is installed on below square casing；Described square casing bottom surface opening；Described ash bucket end face opening；Described square casing connects with ash bucket；The base area of described square casing is consistent with the top surface area of described ash bucket；Two symmetrical sidewalls of described square casing are respectively equipped with air intake and air outlet slit；Described square casing inner upper is provided with 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 pulse valve is positioned at directly over the air pulse entrance of described filter；Described pulse valve is arranged on inside square casing roof.

In this utility model, filter bag includes supporter and the bag body of parcel supporter, can be existing non-woven fabrics filter bag, fabric filter bag, generally circular；Supporter typically uses 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, can 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 air inlet and air outlet on two symmetrical sidewalls, and another two sidewall typically seals；Air is entered by the air inlet of housing, goes out from air outlet, and middle through filter, dust is intercepted absorption by filter, thus reaches the effect of flue gas ash removal；Use the housing of square structure, be on the one hand conducive to the installation of the parts such as filter, mainly avoid gas leakage, i.e. prevent partial fume from directly going out from air outlet without filter.Owing to coal-fired flue-gas is awfully hot, filter is damaged in order to prevent flue-gas temperature too high, this utility model installs temperature alarm in housing sidewall, its temperature probe is positioned at housing, which specifically it is installed on face sidewall not limit, determining according to actual place, can monitor flue-gas temperature in housing, temperature alarm is commercial products.

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, are all hatch frame, thus enclosure interior connects with ash bucket inside；Thus, the dust that the filter bag that enclosure interior is installed is shaken off can the most directly fall to ash bucket, there is not to fall ash dead angle, then the dust outlet below ash flue bucket is collected and got 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, installing plate does not limits with the distance of housing top wall, general beneficially filter and the installation of pulse valve, 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；Preferably filter support plate is formed around baffle plate, and the baffle plate that surrounding is connected is so that the gravity of filter is uniformly dispersed, and beneficially gripper shoe is stable with the active force of installing plate, ensures that filter is operationally stable；Further preferred, 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 the strength enhancing of stress central hot water supply system, beneficially 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, the most whole filter can regard a symmetrical structure as, make filter support plate uniform force, can 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, 1.2～1.5 times that cylindrical a height of truncated cone-shaped is high, pulse efficiency be can effectively promote, existing Venturi tube and the unmatched problem of filter bag overcome simultaneously.This utility model dish the most on the filter arranges the air pulse entrance of venturi tube structure, one-body molded with filter support plate, effectively promotes pulse efficiency；Filter support plate is positioned at air pulse entrance upper cone bench-type sidewall with the joint face of air pulse entrance side, air pulse entrance lower end is positioned at below filter support plate, use 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.

Being provided with bulge-structure in the middle of filter lower wall, be interior with filter interior, bulge-structure is that ecto-entad is protruding, i.e. inwardly protruding by filter bottom；What this utility model was creative arranges bulge-structure in filter bottom, when air pulse undershoot to bulge-structure, is effectively formed bounce-back, plays the effect of distribution air-flow, enters interruption-forming cooperative effect with top Venturi type air pulse, increases pulse lavage effect.Bulge-structure is the hollow-core construction of top closure, bulge-structure bottom opening the most of the present utility model, and such as circular platform type is protruding, up-small and down-big, microcephaly one end is closed, major part one end open, it is hollow from one section of microcephaly to major part, while promoting pulsatile effect, alleviates filter body weight.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 may 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.It is provided with the attachment means in addition to filter bag, it is ensured that filter is stable equal between lower wall on the filter.Can arrange two openings of symmetry at venturi tube structure top inner side wall, connecting rod rides on two openings；Bracing piece can use screw to connect with the connection of bulge-structure, convenient dismounting.

Pulse valve is existing product, with gas inlet and outlet, it is provided that impulsive force, pulse of compressed air is blown in filter sock by pulse valve, reaches to remove the purpose of filter bag dust；Pulse valve is arranged on inside square casing roof, can connect through roof with compressed air gas source, pulse valve is prior art with the connection of compressed air gas source, each filter is provided above a pulse valve, those skilled in the art arrange voluntarily according to enclosure interior office, can be arranged on inside housing top wall by modes such as screw, bolt, twisted buckles by pulse valve.

This utility model is provided with vibrating device in ash bucket lateral wall, can tap or rapping ash bucket, thus beneficially dust releasing, it is more easy to discharge from dust outlet；High charge level detection device it is provided with, it is to avoid dust accumulation inside ash bucket.Ash bucket disclosed in this utility model 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.

Owing to technique scheme is used, this utility model compared with prior art has the advantage that

1. this utility model makes public for the first time a kind of new dust removing device for flue gas of boiler, is exclusively used in burning coal burning boiler dedusting, arranges the air pulse entrance of venturi tube structure the most on the filter in the middle of dish, 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, uses 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. this utility model is provided with bulge-structure first in the middle of filter lower wall, inwardly protruding by filter bottom, 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, effectively removing the solid impurity on filter bag, removal effect is fabulous；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. dust removing device for flue gas of boiler disclosed in this utility model, rationally, dismounting easily, is suitable for multiple filter bag to structure composition；By the design of pulse valve, effectively introducing a large amount of air pulses, filter bag is inhaled the dust having and shakes off, cleaning performance reaches optimal；Service life of equipment is long simultaneously, it is adaptable to high temperature, the dust removal process of Acidity of Aikalinity coal-fired flue-gas.

Accompanying drawing explanation

Fig. 1 is the structural representation of dust removing device for flue gas of boiler；

Fig. 2 is the structural representation of dish on filter；

Fig. 3 is the structural representation of filter lower wall；

Fig. 4 is the structural representation of square casing and ash bucket；

Wherein, square casing 1, air intake 11, air outlet slit 12, installing plate 13, temperature alarm 14, ash bucket 2, dust outlet 21, vibrating device 22, high charge level detection device 23, filter 3, filter support plate 31, air pulse entrance 32, baffle plate 33, connecting plate 34, screwed hole 35, circular platform type projection 36, long connecting plate 37, pulse valve 4.

Detailed description of the invention

Below in conjunction with the accompanying drawings and this utility model is further described by embodiment:

Embodiment one

Seeing accompanying drawing 1, dust removing device for flue gas of boiler includes square casing 1, ash bucket 2, filter 3 and pulse valve 4；Ash bucket is installed on below square casing, and hopper bottom is provided with dust outlet 21, and ash bucket lateral wall is provided with vibrating device 22, is provided with high charge level detection device 23 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；Square casing bottom surface opening, ash bucket end face opening, the base area of square casing is consistent with the top surface area of ash bucket, thus square casing connects with ash bucket；Two symmetrical sidewalls of square casing are respectively equipped with air intake 11 and air outlet slit 12, and inner upper is provided with installing plate 13；Square casing sidewall installs temperature alarm 14, and temperature probe is positioned at housing；Filter is installed on installing plate, filter includes dish on filter, filter lower wall and be positioned at dish on filter, filter bag between filter lower wall, on filter, dish all leaves the groove installing filter bag with filter lower wall, each parts can be fixed by the way 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, air pulse entrance be bottom be cylindrical, top is the venturi tube structure of truncated cone-shaped, 1.5 times that wherein cylindrical a height of truncated cone-shaped is high, air pulse entrance lower end is positioned at below filter support plate, circular platform type bulge-structure it is provided with in the middle of filter lower wall, bulge-structure is the hollow-core construction of top closure, dish on filter, accompanying drawing 2 is shown in by the concrete structure schematic diagram of filter lower wall, accompanying drawing 3；Pulse valve is installed on inside roof, and directly over the air pulse entrance of filter, existing conventional compressed air, through pulse valve, becomes the flushed filter bag of air pulse, and the ash effect that falls is obvious.

Seeing accompanying drawing 2, for the structural representation of dish on filter, on filter, dish includes filter support plate 31 and the air pulse entrance 32 being located in the middle part of filter support plate；Filter support plate is formed around baffle plate 33, and is provided with multiple connecting plate 34 and installation screwed hole 35；Air pulse entrance is venturi tube structure, and bottom is cylindrical, and top is truncated cone-shaped, 1.5 times that cylindrical a height of 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, can effectively alleviate active force and abrasion suffered by filter and installing plate installed surface.

Seeing accompanying drawing 3, for filter lower disc schematic diagram, left figure is vertically to use state diagram, centre is provided with circular platform type projection 36, up-small and down-big, and microcephaly one end is closed, major part one end open, it is hollow from one section of microcephaly to major part, when air pulse undershoot to bulge-structure, 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, 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 i.e. 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 37, promotes the intensity of filter lower wall, it is to avoid due to the impulsive force of air pulse may bring to the destruction of stability between lower wall and filter bag.

Accompanying drawing 4 is square casing and ash bucket structural representation, ash bucket 2 is installed on below square casing 1, the base area of square casing is consistent with the top surface area of ash bucket, square casing connects with ash bucket, and hopper bottom is provided with dust outlet 21, its shape not impact effect, ash bucket is truncated rectangular pyramids structure, ash bucket lateral wall is provided with vibrating device 22, and square casing sidewall installs temperature alarm 14, and temperature probe is positioned at housing.

Embodiment two

Dust removing device for flue gas of boiler, compared with embodiment one, agent structure is constant, including square casing, ash bucket, filter and pulse valve；Wherein having following difference 1. ash bucket is truncated rectangular pyramids structure, and the incline of truncated rectangular pyramids and the angle of upper bottom surface are 85 degree；2. the medial wall, air pulse entrance upper end of filter is provided with connecting rod, connecting rod is connected with bulge-structure top by bracing piece, bracing piece can use screw to be connected with circular platform type projection, it is provided with the attachment means in addition to filter bag equal between lower wall on the filter, 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 way of existing encapsulating, two mouths can be opened in air pulse entrance upper end, connecting rod is carried on a shoulder pole on opening, it is connected with filter lower wall by bracing piece；3. in venturi tube structure, 1.5 times that cylindrical a height of truncated cone-shaped is high.

Coal-fired flue-gas enters enclosure interior from square casing air intake, through filter, carries out flue gas ash removal；Simultaneously every 15 minutes unbalanced pulse valves, the air pulse entrance that plant compressed air pulse enters filter is carried out；The air pulse entrance of venturi tube structure is set in the middle of dish on filter, 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；The most 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；It is possible to prevent flue-gas temperature too high according to temperature alarm and damages filter, according to the prompting of high charge level detection device, open the vibrating device of ash bucket lateral wall, accelerate the ash that falls.

Claims (8)

1. a dust removing device for flue gas of boiler, including square casing, ash bucket, filter and pulse valve；Institute State ash bucket to be installed on below square casing；Described square casing bottom surface opening；Described ash bucket end face opening；Institute State square casing to connect with ash bucket；The base area of described square casing is consistent with the top surface area of described ash bucket； Two symmetrical sidewalls of described square casing are respectively equipped with air intake and air outlet slit；Described square casing Inner upper is provided with installing plate；Described filter is installed on described installing plate；Described hopper bottom is provided with powder Dirt exports；Described filter includes dish on filter, filter lower wall and is positioned at dish on filter, filtration Filter bag between device lower wall；On described filter, dish includes filter support plate and is located in filter support plate The air pulse entrance in portion；Described air pulse entrance is venturi tube structure；Described air pulse entrance lower end It 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 pulse valve is positioned at directly over the air pulse entrance of described filter；Institute State pulse valve to be arranged on inside square casing roof.

Dust removing device for flue gas of boiler the most according to claim 1, it is characterised in that: described square casing side Temperature alarm installed by wall；The temperature probe of described temperature alarm is positioned at housing.

Dust removing device for flue gas of boiler the most 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.

Dust removing device for flue gas of boiler the most according to claim 1, it is characterised in that: described filter lower wall The bulge-structure that centre is provided with is circular platform type bulge-structure；The top of described bulge-structure to sidewall bottom is arranged Connecting plate.

Dust removing device for flue gas of boiler the most according to claim 1, it is characterised in that: described pulse air flows into Mouth medial wall, upper end is provided with connecting rod, and connecting rod is connected with bulge-structure top by bracing piece.

Dust removing device for flue gas of boiler the most according to claim 1, it is characterised in that: described venturi tube structure Bottom be cylindrical, top is truncated cone-shaped；1.2～1.5 times that a height of truncated cone-shaped of described cylinder is high.

Dust removing device for flue gas of boiler the most according to claim 1, it is characterised in that: described ash bucket lateral wall It is provided with vibrating device；High charge level detection device it is provided with inside described ash bucket.

Dust removing device for flue gas of boiler the most according to claim 1, it is characterised in that: described ash bucket is four ribs Platform structure；The incline of described truncated rectangular pyramids and the angle of upper bottom surface are 65～85 degree.