CN114950025B - Zinc smoke dust collector in hot galvanizing technology - Google Patents

Abstract

The utility model relates to a zinc cigarette dust collector in hot-galvanize technology, relate to the hot-galvanize field, it includes the aircraft bonnet, the last baffle has set firmly in the aircraft bonnet, it cuts off in with the aircraft bonnet to go up the baffle is last box and lower box, go up the baffle and set up a plurality of through-holes that will go up box and lower box intercommunication, install the bag cage with the through-hole one-to-one in the lower box, bag cage upper end all with the lateral wall swing joint that corresponds the through-hole, the bag cage all overlaps outward and is equipped with the filter bag, the filter bag upper end all with last baffle fixed connection, be equipped with the actuating mechanism who is used for controlling the bag cage to remove to the through-hole top in the aircraft bonnet, it is equipped with pulse mechanism to go up the box. This application filter bag clearance in-process is taking place the inflation in, can shorten the forced deformation in order to reduce itself to influence to the filter bag life-span when reducing the clearance, the life of extension filter bag.

Description

Zinc smoke dust collector in hot galvanizing technology

Technical Field

The application relates to the field of hot galvanizing, in particular to a zinc fume dust removal device in a hot galvanizing process.

Background

The hot galvanizing, also called hot dip galvanizing, is mainly characterized in that an iron or steel substrate needing a coating is immersed into molten zinc liquid, a zinc alloy coating with good adhesiveness is generated on the surface of the substrate through the reaction and diffusion between iron and zinc, and the coating generated by the hot galvanizing is uniform and has the advantages of strong adhesive force, long service life and the like.

In the related technology, a large amount of zinc smoke is generated in the hot galvanizing process, and the zinc smoke has strong harm to human bodies, so the zinc smoke needs to be collected and treated and cannot be directly discharged. The zinc fume contains zinc oxide, metal zinc and other components, and the current common zinc fume collection mode is as follows: an air extractor is arranged above the zinc liquid pool, the flue gas discharged to the air above the zinc liquid pool in the galvanizing process is intensively extracted, and then the flue gas is introduced into a dust remover for dust removal, and then a series of treatments such as zinc recovery are carried out.

At present, dust collectors are various, including an electrostatic dust collector, a filter cartridge dust collector, a cyclone dust collector, a bag-type dust collector and the like, wherein the electrostatic dust collector has low efficiency, the service life of the filter cartridge dust collector is low, the cyclone dust collector is difficult to separate zinc smoke to reach the standard, and compared with the pulse bag-type dust collector with the pulse dust-cleaning matched bag-type dust collector, the pulse bag-type dust collector has wide application in the field of zinc smoke treatment. The air extractor pumps the zinc smoke mixing part of air into the dust remover, the factory environment is complex, the air contains a large amount of dust and other impurities, and the zinc smoke can be mixed into the impurities to enter the dust remover. A bag cage is fixedly arranged in the dust collector and used for supporting the filter bag, and gas passes through the filter bag to be separated from impurities.

In order to solve the above problems, the inventor found that the pulse dust removal is realized by introducing compressed gas into a filter bag to make the filter bag expand and deform, the length of the filter bag is limited by a bag cage, the filter bag is easily damaged to a certain extent by resisting forced deformation of the bag cage, and the period of the pulse dust removal is short due to high mixing amount of impurities such as dust in zinc fume, so that the service life of the filter bag is short.

Disclosure of Invention

In order to prolong the service life of a filter bag, the application provides a zinc smoke dust removal device in a hot galvanizing process.

The application provides a zinc smoke dust collector in hot galvanizing technology adopts following technical scheme:

the utility model provides a zinc cigarette dust collector in hot-galvanize technology, includes the aircraft bonnet, the aircraft bonnet has set firmly the baffle, goes up the baffle and cuts off in with the aircraft bonnet for last box and lower box, goes up the baffle and sets up a plurality of through-holes that will go up box and lower box intercommunication, installs the bag cage with the through-hole one-to-one in the lower box, bag cage upper end all with the lateral wall swing joint that corresponds the through-hole, the bag cage all overlaps outward and is equipped with the filter bag, the filter bag upper end all with last baffle fixed connection, be equipped with in the aircraft bonnet and be used for controlling the actuating mechanism that the bag cage removed to the through-hole top, it is equipped with pulse mechanism to go up the box.

By adopting the technical scheme, when the device normally works, zinc smoke enters the lower part of the upper partition plate, passes through the filter bag and then moves to the upper part of the upper partition plate, so that the zinc smoke is separated from part of impurities; during cleaning, the driving mechanism drives the bag cage to move upwards, then the pulse mechanism starts to intermittently spray compressed gas into the filter bag, and the bag cage rises to lose the limit to the lower end part of the filter bag, so that the filter bag can be shortened through length to reduce the forced deformation caused by the filter bag when expanding, thereby reducing the influence on the service life of the filter bag during cleaning and prolonging the service life of the filter bag.

Optionally, the driving mechanism includes a lifting plate, the lifting plate is located above the upper partition plate, the bag cages are all vertically arranged, and the upper end portions of the bag cages are fixedly connected with the lifting plate.

Through adopting above-mentioned technical scheme, the lift plate rises and can drive the bag cage of all filter bags simultaneously and rise, and simple structure is convenient for control.

Optionally, an elastic part is fixedly connected between the lifting plate and the upper partition plate, and the lower end surface of the lifting plate is abutted to the upper partition plate in a natural state of the elastic part.

By adopting the technical scheme, the elastic piece plays a role in drawing the lifting plate, so that the lifting plate is not easy to rise accidentally; meanwhile, after cleaning is finished, the lifting plate is pulled to descend, the bag cage is guaranteed to descend to the initial position, and the supporting effect of the bag cage on the filter bag during working is guaranteed.

Optionally, the pulse mechanism includes compressed air package, first air duct and pulse valve, and compressed air package intercommunication has the air supply pipe, and the one end and the first air duct intercommunication of compressed air package are kept away from to the air supply pipe, and on the first air duct was located to the pulse valve, a plurality of gas ports with the filter bag one-to-one were seted up to first air duct, and the air supply pipe is equipped with the ooff valve.

Through adopting above-mentioned technical scheme, the ooff valve is opened during the clearance, and compressed air in the compressed air package gets into in the first air duct through the air supply pipe, and then gets into the filter bag through the air port to realize the intermittent type nature air feed in to the filter bag under the effect of pulse valve, promote the vibrations and the deformation of filter bag, thereby clear up simple structure control convenience.

Optionally, the upper baffle plate is fixedly provided with a gas tank, a gas cavity is formed in the gas tank, a lifting rod is slidably connected in the gas cavity, the upper end of the lifting rod is fixedly connected with the lifting plate, one end, away from the compressed gas bag, of the gas supply pipe is communicated with a second gas guide pipe, one end, away from the compressed gas bag, of the second gas guide pipe is communicated with the position, below the lifting rod, of the gas cavity, and the lower end of the gas cavity is communicated with a gas exhaust valve.

Through adopting above-mentioned technical scheme, when the ooff valve is opened and is carried out the clearance, the air supply pipe utilizes atmospheric pressure top to move the lifter and rise to the air pocket internal gas feed through the second air duct, and the automation of lifting plate rises when realizing the clearance, and after the clearance, discharge valve opens and to realize that the lifting plate descends, and simple structure controls conveniently.

Optionally, the driving mechanism includes a lower partition plate, the lower partition plate is rotatably connected with the hood, the lower end of the filter bag is fixedly connected with the lower partition plate, the lower partition plate is provided with a plurality of dust falling holes, the distance between the upper partition plate and the lower partition plate is smaller than the length of the filter bag, and the upper end of the bag cage penetrates through the corresponding through hole and extends to the position above the upper partition plate.

By adopting the technical scheme, when the bag cage works, the filter bag and the bag cage are in an inclined state, and the filter bag is tensioned by the upper partition plate and the lower partition plate; during the clearance, lower baffle rotates and makes the filter bag be vertical state, because the bag cage is placed in the filter bag, the bag cage removes to vertical state along with the filter bag, because the interval of last baffle and lower baffle is less than filter bag length, the filter bag is comparatively loose, along with compressed air's intermittent type nature impact, the filter bag vibrations are cleared up, and difficult emergence mandatory deformation is favorable to prolonging the life of filter bag.

Optionally, both ends of the filter bag in the length direction are provided with folding parts.

By adopting the technical scheme, after the lower partition plate rotates to enable the filter bag to be in an inclined state, the folding part is unfolded, so that structural deformation of two ends of the filter bag due to tensioning during inclination is reduced, and the service life of the filter bag is prolonged.

Optionally, an anti-wear layer is fixedly arranged on the surface of the bag cage.

By adopting the technical scheme, in the working and cleaning processes, the filter bag is inevitably rubbed with the bag cage, the abrasion of the bag cage on the inner wall of the filter bag can be reduced by the abrasion-proof layer, and the service life of the filter bag is prolonged.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the device normally works, zinc smoke enters the lower part of the upper partition plate, passes through the filter bag and then moves to the upper part of the upper partition plate, so that the zinc smoke is separated from part of impurities; the switch valve is opened during cleaning, the air supply pipe supplies air to the air cavity through the second air duct, the lifting rod is pushed to ascend by air pressure, automatic ascending of the lifting plate during cleaning is realized, the limit of the bag cage on the lower end part of the filter bag is lost due to ascending, then the pulse mechanism starts to intermittently spray compressed air into the filter bag, and the filter bag can be shortened through length to reduce the forced deformation of the filter bag when expanding, so that the influence on the service life of the filter bag during cleaning is reduced, and the service life of the filter bag is prolonged;

2. when the filter bag works, the filter bag is in an inclined state and is tensioned by the upper partition plate and the lower partition plate; during the clearance, lower baffle rotates and makes the filter bag be vertical state, and then makes bag cage upper end slide to the upper baffle top, because the interval of last baffle and lower baffle is less than filter bag length, the filter bag is comparatively loose, and along with compressed air's intermittent type nature impact, the filter bag vibrations are cleared up, and difficult emergence mandatory deformation is favorable to prolonging the life of filter bag.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present application.

Fig. 2 is a schematic cross-sectional structure diagram of embodiment 1 of the present application.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

FIG. 4 is a schematic sectional view showing the inside of a filter bag according to example 1 of the present application.

Fig. 5 is a schematic cross-sectional structure of embodiment 2 of the present application.

Fig. 6 is a partial structural schematic diagram of the relative positions of the through hole and the bag cage in embodiment 2 of the present application.

Description of reference numerals: 1. a hood; 11. an upper box body; 12. a lower box body; 13. a dust falling hopper; 14. an air inlet pipe; 15. an air outlet pipe; 2. an upper partition plate; 21. a through hole; 22. filtering the bags; 221. a folding part; 23. an elastic member; 24. a gas tank; 241. a lifting rod; 242. an exhaust valve; 3. a lifting plate; 31. a bag cage; 4. a lower partition plate; 5. a pulse mechanism; 51. compressing the air bag; 511. a gas supply pipe; 5111. an on-off valve; 52. a first air duct; 53. a pulse valve; 6. a second air duct.

Detailed Description

The present application is described in further detail below with reference to all of the figures.

The embodiment of the application discloses zinc smoke dust collector in hot galvanizing process.

Example 1:

referring to fig. 1 and 2, a zinc smoke dust removal device in a hot galvanizing process comprises a hood 1, wherein an upper box body 11, a lower box body 12 and a dust falling hopper 13 are arranged in the hood 1, the lower box body 12 is communicated with an air inlet pipe 14, the upper box body 11 is communicated with an air outlet pipe 15, zinc smoke firstly enters the lower box body 12 from the air inlet pipe 14, a plurality of vertical filter bags 22 are arranged in the lower box body 12, openings of the filter bags 22 are communicated with the upper box body 11, and the zinc smoke passes through the filter bags 22 to enter the upper box body 11 and then is discharged through the air outlet pipe 15; the upper box body 11 is provided with a pulse mechanism 5, and a user can clean the filter bag 22 by using the pulse mechanism 5 at regular intervals.

Referring to fig. 2 and 3, a horizontal upper partition plate 2 is fixedly installed in the hood 1, the upper box 11 and the lower box 12 are separated by the upper partition plate 2, a plurality of through holes 21 are formed in the upper partition plate 2, the through holes 21 correspond to the filter bags 22 one by one, and the openings in the upper ends of the filter bags 22 are aligned to the corresponding through holes 21, so that the filter bags 22 are communicated with the upper box 11, the upper ends of the filter bags 22 are fixedly installed on the upper partition plate 2, and the filter bags 22 are supported at the upper ends of the lower box 12 by the upper partition plate 2.

Refer to fig. 1 and fig. 2, all install bag cage 31 in the filter bag 22, bag cage 31 is the drum shape, and the lateral wall is latticed, bag cage 31's external diameter slightly is less than the internal diameter of filter bag 22, bag cage 31 adopts materials such as non-deformable's metal, support filter bag 22, even the pressure that zinc cigarette flows is great, also difficult make filter bag 22 take place to buckle the deformation such as, also difficult because of lower box 12 wind pressure causes the phenomenon that the adhesion of 22 inner walls of filter bag influences zinc cigarette and passes through, and then the separation effect of guarantee filter bag 22 to impurity in the zinc cigarette.

Referring to fig. 2 and 4, the length of the bag cage 31 is greater than that of the filter bag 22, and in a normal working state, the lower end of the bag cage 31 abuts against the lower end of the filter bag 22, so that the filter bag 22 is in a state of being relatively tightly supported in the length direction, and the filter bag 22 and zinc smoke are guaranteed to have a relatively large effective contact area, so as to improve the filtering efficiency.

Referring to fig. 2, as zinc fume flows into the lower box 12 through the air inlet pipe 14, under the action of air pressure, the zinc fume in the lower box 12 passes through the bag wall of the filter bag 22 and enters the filter bag 22, and then enters the upper box 11 through the through hole 21 and is discharged from the air outlet pipe 15; during which a part of impurities contained in the zinc fumes are trapped to the outer surface of the filter bag 22.

Referring to fig. 1 and 2, after a period of operation, the filter bag 22 accumulates more impurities on its outer surface, which affects the zinc smoke entering the filter bag 22, at which time the user can choose to stop the machine and then clean the filter bag 22 by the pulse mechanism 5. The pulse mechanism 5 comprises a compressed air bag 51, the compressed air bag 51 is fixedly arranged outside the hood 1, compressed air is contained in the compressed air bag 51, the compressed air bag 51 is communicated with an air supply pipe 511, a switch valve 5111 is arranged on the air supply pipe 511, and a user controls the switch valve 5111 to be opened during cleaning so that the compressed air in the compressed air bag 51 is discharged from the air supply pipe 511.

Referring to fig. 1 and 2, the tee joint is installed to the one end that air supply pipe 511 is kept away from compressed air package 51, and utilize the tee joint to communicate simultaneously and have first air duct 52 and second air duct 6, the back is opened to ooff valve 5111, air supply pipe 511 supplies compressed air in to first air duct 52 and the second air duct 6 simultaneously, first air duct 52 communicates to the last box 11 in, and communicate and have a plurality of gas ports, gas port and filter bag 22 one-to-one, the gas port is all vertical downwards and the center pin position that aligns corresponding filter bag 22, compressed air in the first air duct 52 spouts into in the corresponding filter bag 22 through the gas port.

Referring to fig. 2, the introduction of compressed air causes a pressure difference between the inside and the outside of the filter bag 22, which further causes the filter bag 22 to expand, so as to shake off impurities adhered to the outer wall of the filter bag 22, a pulse valve 53 is installed at one end of the first air duct 52 close to the air supply pipe 511, and the pulse valve 53 is a common valve, which is not described in this embodiment; under the action of the pulse valve 53, the compressed air is intermittently injected into the filter bag 22 to cause the filter bag 22 to vibrate, thereby improving the shaking-off effect on impurities.

Referring to fig. 2, there is the horizontally lifting plate 3 along vertical direction sliding connection in the upper box 11, the lower terminal surface of lifting plate 3 and the up end butt of last baffle 2 under the natural state, the through-hole 21 and the lifting plate 3 fixed connection that last baffle 2 corresponds are passed to the upper end of bag cage 31, lifting plate 3 sets up the round hole with through-hole 21 one-to-one, and then make inside and the 3 top of lifting plate intercommunication of filter bag 22, have enough space to hold the zinc cigarette in the upper box 11 of being convenient for.

Referring to fig. 2 and 3, a driving mechanism is installed in the hood 1, and a user controls the lifting plate 3 to ascend using the driving mechanism. The driving mechanism comprises a gas tank 24 fixedly arranged below the upper partition plate 2, a gas cavity is arranged in the gas tank 24, one end, far away from the compressed gas bag 51, of the second gas guide pipe 6 is communicated with the inside of the gas tank 24, the first gas guide pipe 52 blows compressed air into the filter bag 22, and meanwhile, the second gas guide pipe 6 supplies the compressed air into the gas tank 24. The lifting rod 241 is connected in the air tank 24 in a sliding mode along the vertical direction, the communication position of the second air duct 6 and the air tank 24 is located below the lifting rod 241, the space of the air tank 24 located below the lifting rod 241 is relatively closed, air pressure is increased along with the supply of compressed air, and the lifting rod 241 is pushed upwards (the principle refers to a common telescopic air cylinder).

Referring to fig. 3, the upper end of the lifting rod 241 is fixedly connected to the lifting plate 3, the lifting rod 241 pushes the lifting plate 3 upwards, and since the upper end of the bag cage 31 is fixed to the lifting plate 3, the bag cage 31 ascends synchronously with the lifting plate 3, the ascending height of the lifting rod 241 is smaller than the distance between the lifting plate 3 and the first air duct 52, and the lifting plate 3 does not collide with the first air duct 52 when in the highest position.

Referring to fig. 2 and 3, since the upper end of the filter bag 22 is fixed on the upper partition plate 2, at this time, the bag cage 31 rises relative to the filter bag 22, the lower end part of the filter bag 22 loses the position limitation of the bag cage 31, under the introduction of the compressed air of the first air duct 52, the filter bag 22 expands, and meanwhile, the bottom of the filter bag 22 can rise by a certain height, so as to reduce the forced deformation when the filter bag 22 expands, and the size of the gap of the filter bag 22 is not easily influenced, thereby reducing the damage to the service life of the filter bag 22 in the cleaning process, and achieving the effect of prolonging the service life of the filter bag 22.

Referring to fig. 2, as the filter bag 22 is vibrated and expanded, foreign substances trapped on the outer surface of the filter bag 22 are dropped and fall down to the lower end of the lower case 12 by gravity. The ash falling hopper 13 is communicated with the lower end part of the lower box body 12, the falling impurities directly fall into the ash falling hopper 13, the ash falling hopper 13 is in a frustum shape with a downward tip, and a user can communicate the lower end part of the ash falling hopper 13 with common machines such as a screw conveyor and the like, so that the impurities discharged from the ash falling hopper 13 can be timely conveyed out.

Referring to fig. 2 and 3, after the cleaning is finished, the on-off valve 5111 is closed, the supply of the compressed gas bag 51 is stopped, the lower end part of the gas tank 24 is communicated with the exhaust valve 242, and after the cleaning is finished, the exhaust valve 242 is opened, so that the gas in the gas cavity can be exhausted, and the gas tank 24 is decompressed; the user can select pneumatic discharge valve 242 and pneumatic type ooff valve 5111 to utilize the two switch in turn of solenoid valve control, realize that the user is when opening ooff valve 5111 clearance, discharge valve 242 self-closing is airtight with the air cavity, and when the user closed ooff valve 5111 was ended in the clearance, discharge valve 242 opened automatically and loses heart the air cavity, simple structure convenient operation.

Referring to fig. 2 and 3, an elastic member 23 is fixedly connected between the upper partition plate 2 and the lifting plate 3, the elastic member 23 is a spring, the elastic member 23 is in an elongated state during cleaning, after the air tank 24 is depressurized, the lifting plate 3 is lowered to be abutted against the upper end face of the upper partition plate 2 again under the combined action of the elastic member 23 and gravity, so that the lower end of the bag cage 31 is limited to the lower end of the filter bag 22 again, and the lifting plate 3 is not prone to being lifted accidentally during normal operation under the pulling action of the elastic member 23.

Referring to fig. 3, the surface of the bag cage 31 is provided with an anti-abrasion layer, which can be made of rubber or other materials or various smooth coatings, so as to reduce the abrasion between the filter bag 22 and the bag cage 31 during work and cleaning, and further prolong the service life of the filter bag 22.

The implementation principle of the embodiment 1 of the application is as follows: when cleaning, a user controls the switch valve 5111 to open, so that compressed air in the compressed air bag 51 is supplied to the first air duct 52 and the second air duct 6 at the same time, the compressed air in the first air duct 52 is sprayed into the corresponding filter bag 22 through the air port, and the filter bag 22 is vibrated under the action of the pulse valve 53, so that impurities are shaken off; meanwhile, the second air duct 6 supplies compressed air into the air tank 24, the lifting plate 3 is pushed by the lifting rod 241 to lift, the bag cage 31 lifts relative to the filter bag 22, the position of the part of the lower end of the filter bag 22 loses the limit of the bag cage 31, when the filter bag 22 expands, the bottom can lift by a certain height, so that the forced deformation generated when the filter bag 22 expands is reduced, the size of a gap of the filter bag 22 is not easily influenced, the damage to the service life of the filter bag 22 in the cleaning process is reduced, and the effect of prolonging the service life of the filter bag 22 is achieved.

Example 2:

referring to fig. 5 and 6, the present embodiment is mainly different from embodiment 1 in that: the driving mechanism comprises a lower partition plate 4 arranged at the lower end part of the lower box body 12, the lower partition plate 4 is in a horizontal circular plate shape and is rotatably connected with the hood 1, the lower end parts of the filter bags 22 are fixedly connected with the lower partition plate 4, the filter bags 22 are in a vertical state during cleaning, the upper end parts of the bag cages 31 penetrate through the corresponding through holes 21 and extend to the upper part of the upper partition plate 2, and the outer diameters of the bag cages 31 are smaller than the inner diameters of the through holes 21, so that the bag cages 31 can tilt, lift and the like to a certain degree in the through holes 21; the lower end part of the bag cage 31 is abutted against the bottom of the filter bag 22 under the action of gravity and is supported by the lower clapboard 4; the distance between the upper partition plate 2 and the lower partition plate 4 is smaller than the length of the filter bag 22, namely, the filter bag 22 in a vertical state is loose, and when the pulse mechanism 5 is cleaned to cause the expansion of the filter bag 22, the filter bag 22 is not easy to generate forced deformation, so that the effect of prolonging the service life of the filter bag 22 is achieved. The lower partition plate 4 is provided with a plurality of ash falling holes, and the cleaned impurities fall into the ash falling hopper 13 through the ash falling holes.

Refer to fig. 5, install the motor in the lower box 12, the gear is installed to the output of motor, the outer lane fixed mounting of lower baffle 4 has the ring gear, gear and ring gear meshing, the back of finishing is cleared up, user control motor starts, and then baffle 4 takes place rotatoryly under gear and ring gear drive, the filter bag 22 all is in the eccentric position of baffle 4 down with the junction of lower baffle 4, along with the rotation of baffle 4 down, filter bag 22 slowly gets into the tilt state, lower baffle 4 rotates behind the certain angle, all filter bags 22 are taut simultaneously, bag cage 31 gets into the tilt state along with filter bag 22 simultaneously this moment, the guarantee is to the supported effect of filter bag 22.

Referring to fig. 5, the two ends of the filter bag 22 in the length direction are both provided with the folding portions 221, and the folding portions 221 at the two ends of the filter bag 22 are gradually unfolded in the process that the lower partition plate 4 rotates to straighten the filter bag 22, so that the filter bag 22 is not easily forced to deform by pulling the filter bag 22 by the lower partition plate 4, and the service life of the filter bag 22 is ensured.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (4)

1. The utility model provides a zinc cigarette dust collector in hot dip galvanizing process, includes aircraft bonnet (1), its characterized in that: an upper partition plate (2) is fixedly arranged in the hood (1), the upper partition plate (2) partitions the interior of the hood (1) into an upper box body (11) and a lower box body (12), a plurality of through holes (21) which communicate the upper box body (11) with the lower box body (12) are formed in the upper partition plate (2), bag cages (31) which correspond to the through holes (21) one by one are installed in the lower box body (12), the upper end portions of the bag cages (31) are movably connected with the side walls of the corresponding through holes (21), filter bags (22) are sleeved outside the bag cages (31), the upper end portions of the filter bags (22) are fixedly connected with the upper partition plate (2), a driving mechanism which is used for controlling the bag cages (31) to move towards the upper portions of the through holes (21) is arranged in the hood (1), and a pulse mechanism (5) is arranged on the upper box body (11);

the driving mechanism comprises a lifting plate (3), the lifting plate (3) is positioned above the upper partition plate (2), the bag cages (31) are vertically arranged, the upper end parts of the bag cages are fixedly connected with the lifting plate (3), when the lifting plate (3) rises, the bag cages (31) rise relative to the filter bags (22), and the bottoms of the filter bags (22) lose the limiting of the bag cages (31);

the pulse mechanism (5) comprises a compressed air bag (51), a first air duct (52) and a pulse valve (53), the compressed air bag (51) is communicated with an air supply pipe (511), one end, far away from the compressed air bag (51), of the air supply pipe (511) is communicated with the first air duct (52), the pulse valve (53) is arranged on the first air duct (52), the first air duct (52) is provided with a plurality of air ports which correspond to the filter bags (22) one by one, and the air supply pipe (511) is provided with a switch valve (5111);

the air storage device is characterized in that an air tank (24) is fixedly arranged on the upper partition plate (2), an air cavity is formed in the air tank (24), a lifting rod (241) is connected in the air cavity in a sliding mode, the upper end portion of the lifting rod (241) is fixedly connected with the lifting plate (3), one end, far away from the compressed air bag (51), of the air supply pipe (511) is communicated with a second air guide pipe (6), one end, far away from the compressed air bag (51), of the second air guide pipe (6) is communicated with the position, below the lifting rod (241), of the air cavity, and the lower end portion of the air cavity is communicated with an exhaust valve (242);

the driving mechanism comprises a lower partition plate (4), the lower partition plate (4) is rotatably connected with the hood (1), the lower end part of the filter bag (22) is fixedly connected with the lower partition plate (4), a plurality of dust falling holes are formed in the lower partition plate (4), the distance between the upper partition plate (2) and the lower partition plate (4) is smaller than the length of the filter bag (22), and the upper end part of the bag cage (31) penetrates through the corresponding through hole (21) and extends to the position above the upper partition plate (2).

2. The zinc fume dust removal device in the hot galvanizing process according to claim 1, characterized in that: an elastic piece (23) is fixedly connected between the lifting plate (3) and the upper partition plate (2), and the lower end face of the lifting plate (3) is abutted to the upper partition plate (2) under the natural state of the elastic piece (23).

3. The zinc fume dust removal device in the hot galvanizing process according to claim 1, characterized in that: both ends of the filter bag (22) in the length direction are provided with folding parts (221).

4. The zinc fume dust removal device in the hot galvanizing process according to claim 1, characterized in that: and an anti-wear layer is fixedly arranged on the surface of the bag cage (31).

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