CN216260946U

CN216260946U - Mechanical equipment for crushing coal slime and lignite

Info

Publication number: CN216260946U
Application number: CN202121211275.1U
Authority: CN
Inventors: 张玉玺
Original assignee: Henan Yuhong Heavy Machinery Co ltd
Current assignee: Henan Yuhong Heavy Machinery Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-04-12
Anticipated expiration: 2031-06-01

Abstract

The utility model provides mechanical equipment for crushing coal slime and lignite. Mechanical equipment that can be used to coal slime, brown coal breakage includes: the box, one side outer wall fixed mounting of box has the purifying box, be equipped with on the purifying box and purify filtering mechanism, purify filtering mechanism including mounting panel, air exhauster, exhaust column, suction hood, exhaust pipe, arc filter mantle, water pump, first blast pipe, active carbon adsorption board, second drain pipe, filter cloth and two ultraviolet sterilamp, mounting panel fixed mounting is on one side outer wall of purifying box, air exhauster fixed mounting is in the bottom of mounting panel. The mechanical equipment for crushing the coal slime and the lignite, provided by the utility model, can be used for purifying and filtering dust generated by crushing, so that the harm to the health of workers caused by the dust is avoided, and the pollution to air is reduced.

Description

Mechanical equipment for crushing coal slime and lignite

Technical Field

The utility model belongs to the technical field of lignite processing, and particularly relates to mechanical equipment for crushing coal slime and lignite.

Background

Lignite is the minimum coal kind of metamorphism degree, and it is the peat through dehydration, compaction change into the initial stage product of organic biogenetic rock, generally indicates that vitrinite maximum reflectance is between 0.2% ~ 0.5% low metamorphism degree coal, and lignite advances broken shiver, can be used for other fields, and carries out breakage just need use crushing equipment to lignite, among the correlation technique, discloses an ore crushing device for coal mine, including broken box, install first protective housing in the middle of the broken box top, electronic hydraulic stem is installed on the inside top of first protective housing, broken box fixedly connected with first motor is run through to electronic hydraulic stem bottom, first motor bottom is connected with first motor shaft, first motor shaft bottom fixedly connected with crushing section of thick bamboo, the small-size broken tooth of broken section of thick bamboo outside bottom fixedly connected with. Make it through being equipped with the middle-sized broken tooth on electronic hydraulic stem on the first motor and the broken deckle board, not only can utilize the broken deckle board and the broken section of thick bamboo of opposite direction selection to carry out diversified breakage to the ore, in addition at broken in-process, can also fluctuate broken section of thick bamboo from top to bottom, make the broken tooth of broken bobbin base portion and the broken tooth at broken deckle board top, carry out abundant impact breakage to the ore, comparatively practical is fit for extensively promoting and using.

However, the above structure has disadvantages, especially in the process of crushing lignite, the lack of equipment capable of performing evolution filtration on dust is caused, because lignite generates a large amount of dust in the process of crushing lignite by using crushing equipment, and the dust not only causes great harm to the health of workers, but also causes great pollution to air when floating in the air.

Therefore, there is a need to provide a new mechanical device for coal slurry and lignite crushing to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model solves the technical problem of providing mechanical equipment which can purify and filter dust generated by crushing, avoid the harm to the health of workers caused by the dust and reduce the pollution to air and can be used for crushing coal slime and lignite.

In order to solve the technical problems, the mechanical equipment for crushing the coal slime and the lignite provided by the utility model comprises: the purifying box comprises a box body, a purifying box is fixedly arranged on the outer wall of one side of the box body, a purifying and filtering mechanism is arranged on the purifying box and comprises a mounting plate, an exhaust fan, an exhaust pipe, a suction hood, an exhaust pipe, an arc-shaped filter cover, a water pump, a first exhaust pipe, an activated carbon adsorption plate, a second exhaust pipe, filter cloth and two ultraviolet sterilizing lamps, the mounting plate is fixedly arranged on the outer wall of one side of the purifying box, the exhaust fan is fixedly arranged at the bottom of the mounting plate, the exhaust pipe is fixedly arranged on an exhaust opening of the exhaust fan, one end of the exhaust pipe far away from the exhaust fan extends into the box body, the suction hood is arranged in the box body, the suction hood is fixedly connected with one end of the exhaust pipe, the exhaust pipe is fixedly arranged on the exhaust opening of the exhaust fan, one end of the exhaust pipe far away from the exhaust fan extends into the purifying box, the arc-shaped filter cover is arranged in the purifying box, the arc filter mantle is located the top of exhaust pipe, water pump fixed mounting is at the top of mounting panel, fixed mounting has the drinking-water pipe on the drinking-water inlet of water pump, first drain pipe fixed mounting is on the outlet of water pump, first drain pipe runs through the purifying box and extends to in the arc filter mantle, first drain pipe and one side inner wall of arc filter mantle meet the department, be equipped with a plurality of first shower nozzles in the purifying box, first shower nozzle fixed mounting is on one side outer wall of first drain pipe, active carbon adsorption plate fixed mounting is in the purifying box, active carbon adsorption plate is located the top of arc filter mantle, second drain pipe fixed mounting is on one side outer wall of first drain pipe, the one end that first drain pipe was kept away from to the second drain pipe extends to in the purifying box, be equipped with a plurality of second shower nozzles in the purifying box, one side outer wall fixed connection of second shower nozzle and second drain pipe, the filter cloth sets up in the purifying box, the filter cloth is located the below of second shower nozzle, and two equal fixed mounting of ultraviolet sterilamp are on the top inner wall of purifying box.

As a further scheme of the utility model, a first crushing assembly is arranged in the box body, the first crushing assembly comprises a crushing box, a sliding rod, a crushing plate, a driving motor, a mounting disc, a fixing rod, a residual wheel, a connecting rod and a sleeve, the crushing box is fixedly arranged on the inner wall of one side of the box body, the sliding rod is arranged in the crushing box, the top end of the sliding rod extends to the upper part of the box body and is in sliding connection with the box body, the crushing plate is fixedly arranged at the bottom end of the sliding rod, the driving motor is fixedly arranged in the crushing box, the mounting disc is fixedly arranged on an output shaft of the driving motor, a connecting column is fixedly arranged on the outer wall of one side of the mounting disc, the fixing rod is fixedly arranged in the box body, the residual wheel is rotatably arranged on the fixing rod, the top end of the connecting rod is hinged with the residual wheel, the bottom end of the connecting rod is hinged with a supporting column, the sleeve is fixedly sleeved on the sliding rod, the outer wall of one side of the sleeve is provided with a gear plate, and the gear plate is meshed with the residual wheel.

As a further scheme of the utility model, a second crushing assembly is arranged in the box body, the second crushing assembly comprises a crushing box, two crushing rollers, a circular gear and a driving motor, the crushing box is fixedly arranged on the inner wall of one side of the box body, the crushing box is positioned below the crushing box, the two crushing rollers are rotatably arranged in the crushing box, the crushing rollers penetrate through the crushing box, the two circular gears are respectively and fixedly sleeved on the two crushing rollers, an L-shaped plate is fixedly arranged on the outer wall of one side of the crushing box, the driving motor is fixedly arranged on the L-shaped plate, and an output shaft of the driving motor is fixedly connected with one end of the corresponding crushing roller.

As a further scheme of the utility model, a feeding hopper is fixedly installed at the top of the box body, a feeding port is formed in the outer wall of one side of the crushing box, a material guide plate is fixedly installed on the outer wall of one side of the box body, the bottom of the material guide plate is fixedly connected with the inner wall of the bottom of the feeding port, the material guide plate is located below the feeding hopper, a partition plate is fixedly installed on the inner wall of the bottom of the crushing box, a first filtering port is formed in the bottom of the crushing box, and a first filtering net is arranged in the first filtering port.

As a further scheme of the utility model, a second filtering through hole is formed in the bottom of the crushing box, a second filter screen is fixedly mounted in the second filtering through hole, a discharging hopper is fixedly mounted at the bottom of the crushing box, the bottom of the discharging hopper is fixedly connected with the inner wall of the bottom of the box body, a discharging opening is formed in the bottom of the box body, and the discharging opening is positioned below the discharging hopper.

As a further scheme of the utility model, an installation door is hinged to the outer wall of one side of the box body, an observation window is arranged on the installation door, a controller is installed on the installation door, a sealing sleeve is fixedly installed at the top of the box body and matched with the sliding rod, and an exhaust pipe is fixedly installed at the top of the purification box.

Compared with the related art, the mechanical equipment for crushing the coal slime and the lignite provided by the utility model has the following beneficial effects:

1. the dust purification and filtration device has the advantages that the dust generated by crushing can be purified and filtered by the purification and filtration mechanism, the harm to the health of workers caused by the dust is avoided, and the pollution to air is reduced;

2. according to the utility model, under the mutual cooperation of the first crushing assembly and the second crushing assembly, the lignite can be better crushed, the crushing speed can be increased, and the working efficiency is improved.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic front sectional view of a mechanical apparatus for coal slurry and lignite crushing according to the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic diagram of a second crushing assembly according to the present invention;

fig. 4 is a schematic front view of the present invention.

In the figure: 1. a box body; 2. a purification box; 3. mounting a plate; 4. an exhaust fan; 5. an exhaust pipe; 6. a dust hood; 7. an exhaust duct; 8. an arc-shaped filter cover; 9. a water pump; 10. a first drain pipe; 11. an activated carbon adsorption plate; 12. a second drain pipe; 13. a filter cloth; 14. an ultraviolet sterilizing lamp; 15. a crushing box; 16. a slide bar; 17. a breaker plate; 18. a drive motor; 19. mounting a disc; 20. fixing the rod; 21. a residual wheel; 22. a connecting rod; 23. a sleeve; 24. a crushing box; 25. a crushing roller; 26. a circular gear; 27. the motor is driven.

Detailed Description

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, wherein fig. 1 is a front sectional structural schematic view of a mechanical apparatus for coal slurry and lignite crushing according to the present invention; FIG. 2 is an enlarged schematic view of portion A of FIG. 1; FIG. 3 is a schematic diagram of a second crushing assembly according to the present invention; fig. 4 is a schematic front view of the present invention. Mechanical equipment that can be used to coal slime, brown coal breakage includes: the box body 1, one side outer wall fixed mounting of box body 1 has purifying box 2, be equipped with purification filter mechanism on purifying box 2, purification filter mechanism includes mounting panel 3, air exhauster 4, exhaust column 5, suction hood 6, exhaust pipe 7, arc filter mantle 8, water pump 9, first drain pipe 10, active carbon adsorption board 11, second drain pipe 12, filter cloth 13 and two ultraviolet ray sterilization lamp 14, mounting panel 3 fixed mounting is on one side outer wall of purifying box 2, air exhauster 4 fixed mounting is in the bottom of mounting panel 3, exhaust column 5 fixed mounting is on the suction opening of air exhauster 4, the one end that exhaust column 5 kept away from air exhauster 4 extends to in the box body 1, suction hood 6 sets up in box body 1, suction hood 6 and the one end fixed connection of suction hood 5, exhaust pipe 7 fixed mounting is on the mouth of air exhauster 4, the exhaust pipe 7 is kept away from one end of the exhaust fan 4 and extends into the purification box 2, the arc-shaped filter cover 8 is arranged in the purification box 2, the arc-shaped filter cover 8 is positioned above the exhaust pipe 7, the water pump 9 is fixedly arranged at the top of the mounting plate 3, a water pumping pipe is fixedly arranged on a water pumping port of the water pump 9, the first exhaust pipe 10 is fixedly arranged on a water draining port of the water pump 9, the first exhaust pipe 10 penetrates through the purification box 2 and extends into the arc-shaped filter cover 8, the first exhaust pipe 10 is connected with one side inner wall of the arc-shaped filter cover 8, a plurality of first spray heads are arranged in the purification box 2, the first spray heads are fixedly arranged on one side outer wall of the first exhaust pipe 10, the activated carbon adsorption plate 11 is fixedly arranged in the purification box 2, the activated carbon adsorption plate 11 is positioned above the arc-shaped filter cover 8, the second exhaust pipe 12 is fixedly arranged on one side outer wall of the first exhaust pipe 10, one end that first drain pipe 10 was kept away from to second drain pipe 12 extends to in the purifying box 2, be equipped with a plurality of second shower nozzles in the purifying box 2, one side outer wall fixed connection of second shower nozzle and second drain pipe 12, filter cloth 13 sets up in purifying box 2, filter cloth 13 is located the below of second shower nozzle, and two equal fixed mounting of ultraviolet sterilamp 14 are on the top inner wall of purifying box 2.

As shown in fig. 1 and 2, a first crushing assembly is arranged in the box body 1, the first crushing assembly comprises a crushing box 15, a sliding rod 16, a crushing plate 17, a driving motor 18, a mounting plate 19, a fixing rod 20, a residual wheel 21, a connecting rod 22 and a sleeve 23, the crushing box 15 is fixedly mounted on one side inner wall of the box body 1, the sliding rod 16 is arranged in the crushing box 15, the top end of the sliding rod 16 extends to the upper side of the box body 1 and is in sliding connection with the box body 1, the crushing plate 17 is fixedly mounted at the bottom end of the sliding rod 16, the driving motor 18 is fixedly mounted in the crushing box 15, the mounting plate 19 is fixedly mounted on an output shaft of the driving motor 18, a connecting column is fixedly mounted on one side outer wall of the mounting plate 19, the fixing rod 20 is fixedly mounted in the box body 1, the residual wheel 21 is rotatably mounted on the fixing rod 20, and the top end of the connecting rod 22 is hinged with the residual wheel 21, the bottom end of the connecting rod 22 is hinged with the supporting column, the sleeve 23 is fixedly sleeved on the sliding rod 16, the outer wall of one side of the sleeve 23 is provided with a gear plate, and the gear plate is meshed with the residual wheel 21;

through setting up first broken subassembly, can come to carry out preliminary breakage to the brown coal, make it facilitate for follow-up crushing work.

As shown in fig. 1, a second crushing assembly is arranged in the box body 1, the second crushing assembly includes a crushing box 24, two crushing rollers 25, a circular gear 26 and a driving motor 27, the crushing box 24 is fixedly installed on the inner wall of one side of the box body 1, the crushing box 24 is located below the crushing box 15, the two crushing rollers 25 are rotatably installed in the crushing box 24, the crushing rollers 25 penetrate through the crushing box 24, the two circular gears 26 are respectively and fixedly sleeved on the two crushing rollers 25, an L-shaped plate is fixedly installed on the outer wall of one side of the crushing box 24, the driving motor 27 is fixedly installed on the L-shaped plate, and an output shaft of the driving motor 27 is fixedly connected with one end of the corresponding crushing roller 25;

through setting up the broken subassembly of second, can come further to be broken the brown coal, make crushing effect better, make it can accelerate crushing efficiency.

As shown in fig. 1 and 3, a feeding hopper is fixedly mounted at the top of the box body 1, a feeding port is formed in the outer wall of one side of the crushing box 15, a material guide plate is fixedly mounted on the outer wall of one side of the box body 1, the bottom of the material guide plate is fixedly connected with the inner wall of the bottom of the feeding port, the material guide plate is located below the feeding hopper, a partition plate is fixedly mounted on the inner wall of the bottom of the crushing box 15, a first filtering port is formed in the bottom of the crushing box 15, and a first filtering screen is arranged in the first filtering port.

As shown in fig. 1, the second of smashing case 24 has been seted up and has been filtered the opening, fixed mounting has the second filter screen in the second filters the opening, the bottom fixed mounting who smashes case 24 has row material funnel, arrange the bottom of material funnel and the bottom inner wall fixed connection of box 1, the bin outlet has been seted up to the bottom of box 1, the bin outlet is located the below of arranging the material funnel.

As shown in fig. 1 and 4, one side outer wall of the box body 1 is hinged with an installation door, the installation door is provided with an observation window, the installation door is provided with a controller, the top of the box body 1 is fixedly provided with a sealing sleeve, the sealing sleeve is matched with the sliding rod 16, and the top of the purifying box 2 is fixedly provided with an exhaust pipe.

The working principle of the mechanical equipment for crushing the coal slime and the lignite provided by the utility model is as follows:

the first step is as follows: the top of the feeding funnel is hinged with a sealing cover, when lignite is required to be crushed, the sealing cover is opened, a proper amount of raw materials are put into the box body 1 through the feeding funnel, the raw materials enter the crushing box 15 through the material guide plate, the driving motor 18 is started to rotate at the moment, the driving motor 18 drives the mounting disc 19 to rotate, the residual wheel 21 is rotated under the action of the fixing rod 20 and the connecting rod 22, the residual wheel 21 drives the gear plate and the sleeve 23 to move up and down, the sliding rod 16 drives the crushing plate 17 to move up and down, so that lignite is primarily crushed, and the crushed lignite can directly fall into the crushing box 24 from the first filter screen;

the second step is as follows: at this time, the driving motor 27 is started again to operate, the crushing rollers 25 are driven to rotate through the output shaft of the driving motor 27, the two crushing rollers 25 are driven to rotate under the action of the two circular gears 26 to further crush the lignite, and the crushed lignite falls into the discharge hopper from the second filter screen and is discharged through the discharge port;

the third step: when dust needs to be treated, the water pumping pipe is placed in a water source, the exhaust fan 4 and the water pump 9 are started to operate, under the action of the dust hood 6 and the exhaust pipe 5, dust in the box body 1 is pumped out, water is pumped out through the exhaust pipe 7 in the purification box 2, water is sprayed out through the water pumping pipe and the first spray nozzle through the first water discharge pipe 10 to filter the dust, the dust is fused with water, the dust which is not fused with the water floats upwards through the arc-shaped filter hood 8 and the activated carbon adsorption plate 11, the dust has a filtering effect when passing through the arc-shaped filter hood 8 and the activated carbon adsorption plate 11, water is sprayed through the second spray nozzle when flowing to the second spray nozzle through the second water discharge pipe 12 to wet the filter cloth, the leaked dust is blocked when passing through the wet filter cloth 13, and clean air can pass through the filter cloth 13 and the exhaust pipe, and discharged to the atmosphere.

It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the technology of the design principle, the settings of the power mechanism, the power supply system, the control system, and the like of the device are not completely described and clear, and on the premise that the skilled person understands the principle of the utility model, the details of the power mechanism, the power supply system, and the control system can be clearly known, the control mode of the application document is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the skilled person in the art;

the standard parts used in the method can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, parts and equipment adopt conventional models in the prior art, and the structure and the principle of the parts known by the skilled person can be known by technical manuals or conventional experimental methods.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments, or a direct or indirect use of these embodiments, without departing from the principles and spirit of the utility model, the scope of which is defined in the claims and their equivalents, which are to be included in the scope of the utility model as defined in the claims.

Claims

1. A mechanical equipment for crushing coal slime and lignite, which is characterized by comprising:

the purifying box comprises a box body, a purifying box is fixedly arranged on the outer wall of one side of the box body, a purifying and filtering mechanism is arranged on the purifying box and comprises a mounting plate, an exhaust fan, an exhaust pipe, a suction hood, an exhaust pipe, an arc-shaped filter cover, a water pump, a first exhaust pipe, an activated carbon adsorption plate, a second exhaust pipe, filter cloth and two ultraviolet sterilizing lamps, the mounting plate is fixedly arranged on the outer wall of one side of the purifying box, the exhaust fan is fixedly arranged at the bottom of the mounting plate, the exhaust pipe is fixedly arranged on an exhaust opening of the exhaust fan, one end of the exhaust pipe far away from the exhaust fan extends into the box body, the suction hood is arranged in the box body, the suction hood is fixedly connected with one end of the exhaust pipe, the exhaust pipe is fixedly arranged on the exhaust opening of the exhaust fan, one end of the exhaust pipe far away from the exhaust fan extends into the purifying box, the arc-shaped filter cover is arranged in the purifying box, the arc filter mantle is located the top of exhaust pipe, water pump fixed mounting is at the top of mounting panel, fixed mounting has the drinking-water pipe on the drinking-water inlet of water pump, first drain pipe fixed mounting is on the outlet of water pump, first drain pipe runs through the purifying box and extends to in the arc filter mantle, first drain pipe and one side inner wall of arc filter mantle meet the department, be equipped with a plurality of first shower nozzles in the purifying box, first shower nozzle fixed mounting is on one side outer wall of first drain pipe, active carbon adsorption plate fixed mounting is in the purifying box, active carbon adsorption plate is located the top of arc filter mantle, second drain pipe fixed mounting is on one side outer wall of first drain pipe, the one end that first drain pipe was kept away from to the second drain pipe extends to in the purifying box, be equipped with a plurality of second shower nozzles in the purifying box, one side outer wall fixed connection of second shower nozzle and second drain pipe, the filter cloth sets up in the purifying box, the filter cloth is located the below of second shower nozzle, and two equal fixed mounting of ultraviolet sterilamp are on the top inner wall of purifying box.

2. The mechanical equipment for crushing coal slime and lignite according to claim 1, wherein: the crushing box is characterized in that a first crushing assembly is arranged in the box body, the first crushing assembly comprises a crushing box, a sliding rod, a crushing plate, a driving motor, a mounting disc, a fixing rod, a residual wheel, a connecting rod and a sleeve, the crushing box is fixedly arranged on the inner wall of one side of the box body, the sliding rod is arranged in the crushing box, the top end of the sliding rod extends to the upper part of the box body and is in sliding connection with the box body, the crushing plate is fixedly arranged at the bottom end of the sliding rod, the driving motor is fixedly arranged in the crushing box, the mounting disc is fixedly arranged on an output shaft of the driving motor, a connecting column is fixedly arranged on the outer wall of one side of the mounting disc, the fixing rod is fixedly arranged in the box body, the residual wheel is rotatably arranged on the fixing rod, the top end of the connecting rod is hinged with the residual wheel, the bottom end of the connecting rod is hinged with a supporting column, and the sleeve is fixedly sleeved on the sliding rod, the outer wall of one side of the sleeve is provided with a gear plate, and the gear plate is meshed with the residual wheel.

3. The mechanical equipment for crushing coal slime and lignite according to claim 2, wherein: the utility model discloses a crushing roller crusher, including crushing case, crushing roller, round gear and driving motor, be equipped with the broken subassembly of second in the box, the broken subassembly of second is including smashing case, two crushing rollers, round gear and driving motor, smash case fixed mounting on one side inner wall of box, smash the below that the case is located crushing case, two crushing rollers all rotate to be installed at crushing incasement, crushing roller runs through crushing case, and two round gear fixed sleeves respectively are established on two crushing rollers, one side outer wall fixed mounting who smashes the case has the L template, driving motor fixed mounting is on the L template, driving motor's output shaft and the one end fixed connection of the crushing roller that corresponds.

4. The mechanical equipment for crushing coal slime and lignite according to claim 2, wherein: the feeding device comprises a box body and is characterized in that a feeding hopper is fixedly mounted at the top of the box body, a feeding opening is formed in the outer wall of one side of the crushing box, a guide plate is fixedly mounted on the outer wall of one side of the box body, the bottom of the guide plate is fixedly connected with the inner wall of the bottom of the feeding opening, the guide plate is located below the feeding hopper, a partition plate is fixedly mounted on the inner wall of the bottom of the crushing box, a first filtering opening is formed in the bottom of the crushing box, and a first filter screen is arranged in the first filtering opening.

5. The mechanical equipment for crushing coal slime and lignite according to claim 3, wherein: the second of smashing the case is seted up and is filtered the opening, fixed mounting has the second filter screen in the second filters the opening, the bottom fixed mounting who smashes the case has row material funnel, arrange the bottom of material funnel and the bottom inner wall fixed connection of box, the bin outlet has been seted up to the bottom of box, the bin outlet is located the below of arranging the material funnel.

6. The mechanical equipment for crushing coal slime and lignite according to claim 1, wherein: the outer wall of one side of box articulates there is the installation door, be equipped with the observation window on the installation door, install the controller on the installation door, the top fixed mounting of box has sealed sleeve, sealed sleeve and slide bar looks adaptation, the top fixed mounting of purifying box has the blast pipe.