CN213610551U

CN213610551U - Air filter for environmental protection engineering

Info

Publication number: CN213610551U
Application number: CN202022556205.1U
Authority: CN
Inventors: 陈喆; 农德向; 罗家俊; 徐创飞; 黄亮; 梁宏涛; 黄泉; 廖诗东; 熊凤仙; 廖春鹃
Original assignee: Guangdong Chengchuang Construction Co ltd
Current assignee: Guangdong Chengchuang Construction Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-07-06
Anticipated expiration: 2030-11-06

Abstract

The utility model relates to an air filter for environmental protection engineering, it includes the casing and sets up in the water tank of casing inboard bottom, the top of casing is equipped with the intake pipe, the one end of intake pipe passes the top of casing and water tank in proper order and extends to the bottom of water tank, the top of casing is provided with first air exhauster, and the gas outlet of first air exhauster is linked together with the upper end fixed connection of intake pipe, the one side that just is located the water tank in the casing is provided with the rose box, the intercommunication is provided with communicating pipe between the top of rose box and the top of water tank, can dismantle in the rose box and be provided with a plurality of filter assembly, the inboard bottom of casing is provided with the second air exhauster, the intake pipe and the rose box fixed connection of second air exhauster, the outlet duct fixedly connected with of second air exhauster. This application has the effect that improves the air filter effect.

Description

Air filter for environmental protection engineering

Technical Field

The application relates to the technical field of environmental protection engineering, in particular to an air filtering device for environmental protection engineering.

Background

The environmental protection project is a project which is specially made for environmental protection, and environmental pollution, especially waste gas pollution, is urgently needed to be controlled due to industrial development. The air filtering device for the environmental protection project is used for filtering dust, particles, harmful gas, peculiar smell and the like contained in air, has a purifying effect on the air and enables the air to reach the corresponding environmental protection standard.

The current chinese patent that bulletin number is CN211022447U discloses a dust removal purifier of ore plant for environmental protection equipment, including casing, clean air pipeline and hose, the bottom middle part inboard of casing is connected with the centrifugal air exhauster, clean air pipe connects in the upper end of centrifugal air exhauster, and the other end of clean air pipeline is connected with the clean air export, the upper end distribution of clean air pipeline has the dust removal jar, and the inside lower extreme distribution of dust removal jar has composite filter screen, composite filter screen's upper end is provided with the ionization region, the upper end distribution in ionization region has the primary filter screen, the top of dust removal jar is connected with big pipeline and is used for advancing the dust removal jar with the air transportation.

With respect to the related art among the above, the inventors consider that the related art has the following drawbacks: air directly gets into the dust removal jar without any processing, leads to compound filter screen and primary filter screen collection dirt too fast in the dust removal jar easily, influences air filter's effect. In addition, the composite filter screen and the primary filter screen which are arranged in the dust removal tank cannot be taken out for cleaning or replacement, and along with the dust removal process, more dust is accumulated on the composite filter screen and the primary filter screen, so that the subsequent air filtering effect is weakened.

SUMMERY OF THE UTILITY MODEL

In order to improve air filter's effect, this application provides an air filter for environmental protection engineering.

The application provides an air filter for environmental protection engineering adopts following technical scheme:

an air filtering device for environmental protection engineering comprises a shell and a water tank arranged at the bottom of the inner side of the shell, the top of the shell is provided with an air inlet pipe, one end of the air inlet pipe sequentially penetrates through the top of the shell and the top of the water tank and extends to the bottom of the water tank, the top of the shell is provided with a first exhaust fan, the air outlet of the first exhaust fan is fixedly connected and communicated with the upper end of the air inlet pipe, a filter box is arranged in the shell and at one side of the water tank, a communicating pipe is communicated between the top of the filter tank and the top of the water tank, a plurality of filter components are detachably arranged in the filter tank, a second exhaust fan is arranged at the bottom of the inner side of the shell, an air inlet pipe of the second exhaust fan is fixedly connected with the filter box, and the air outlet pipe of the second exhaust fan is fixedly connected with an exhaust pipe which penetrates through the shell and extends to the outside of the shell.

Through adopting above-mentioned technical scheme, first air exhauster is in the intake pipe suction water tank with the air to accomplish prefilter by the water tank, then the air is accomplished final filtration by a plurality of filter assembly in the filter tank again, debris in the reducible air of water tank from this, thereby increase filter assembly's life, detachable filter assembly is favorable to follow-up washing or changing filter assembly simultaneously, thereby improves the filter effect of air.

Optionally, the filtering component comprises a storage frame, a baffle and a filtering plate detachably mounted in the storage frame, a long strip-shaped through hole is formed in the side face of the filtering box, the storage frame penetrates through the long strip-shaped through hole and is mounted in the filtering box through a connecting component, the baffle is fixedly arranged on one side of the storage frame, and the baffle is used for opening and closing the long strip-shaped through hole.

Through adopting above-mentioned technical scheme, the filter accessible is put the thing frame and is placed in the rose box, and puts the rectangular shape through-hole of thing frame on through the rose box and can realize being connected with dismantling of rose box, makes things convenient for follow-up washing or change the filter.

Optionally, the connecting assembly includes a connecting block and a supporting block for supporting the connecting block, the connecting block is fixedly connected to two side faces of the object placing frame, which are opposite to each other, and the supporting block is arranged on two inner side faces of the filtering box, which are opposite to the object placing frame.

Through adopting above-mentioned technical scheme, the setting up of supporting shoe and connecting block makes putting the thing frame more stable with being connected of rose box, and puts the upper surface that the thing frame can laminate the supporting shoe and slide along the width direction of rose box.

Optionally, the baffle is fixedly arranged on the outer side wall of the filter box through a locking component, the locking component comprises a pressing block, a spring, a moving rod, a connecting rod and a convex block, one end of the moving rod is fixedly connected with the pressing block, one end of the moving rod, which is far away from the pressing block, penetrates through the baffle and is fixedly connected with the connecting rod, the axis of the connecting rod is perpendicular to the axis of the moving rod, the connecting rod is positioned at the tail end of the connecting rod and faces the side face of the pressing block and is fixedly connected with the convex block, one end of the spring is fixedly connected with the side face of the pressing block, which faces the filter box, and the other end of the spring is fixedly connected with the side face of the baffle, which faces the pressing block, a fixing block capable of abutting against the bottom face of the convex block is arranged on the inner side face of the filter box, and when, and when the spring is in a natural state, the lug is abutted with the fixed block.

Through adopting above-mentioned technical scheme, when the thing frame is put to needs placing, twist reverse the briquetting and make the connecting rod rotate to horizontal position and will put the thing frame again and pass through rectangular shape through-hole and impel the filter box, and back recompression briquetting, the spring is compressed, the carriage release lever, the whole that connecting rod and lug constitute removes to the orientation puts the inside direction of thing frame, twist reverse the briquetting again this moment and make the connecting rod be in vertical state, loosen the briquetting, the spring kick-backs, thereby make the bottom of lug and the top butt of fixed block, accomplish the locking process who puts the thing frame.

Optionally, the baffle deviates from the side surface of the storage frame and is located below the pressing block, and a first handle is arranged below the pressing block.

Through adopting above-mentioned technical scheme, the first in command makes things convenient for operating personnel to pull out or impel the filter assembly when changing the filter.

Optionally, the air inlet fixedly connected with connecting pipe of first air exhauster, the one end fixedly connected with hose of first air exhauster is kept away from to the connecting pipe, the one end fixedly connected with that the connecting pipe was kept away from to the hose inhales the cover, demountable installation has the filter screen that is used for intercepting the dust in the opening that inhales the cover.

Through adopting above-mentioned technical scheme, the hose can be adjusted the direction and the position of dust absorption, and the filter screen that inhales simultaneously in the cover can tentatively carry out the interception to the dust in the air etc. and filter, reduces follow-up water tank and filtering component's adsorption capacity, prolongs the water in the water tank and the life of filter, and filter screen detachable design also makes things convenient for operating personnel to pull down the washing simultaneously.

Optionally, a through hole is formed in the side face, opposite to the baffle, of the shell, and a box door for opening and closing the through hole is hinged to the position, opposite to the through hole, of the shell.

By adopting the technical scheme, the arrangement of the box door is convenient for operators to overhaul and maintain the air filtering device.

Optionally, the water tank faces the lower side wall and the upper side wall of the box door and is correspondingly provided with a water outlet and a water inlet respectively, and the water outlet and the water inlet are fixedly connected with a water nozzle.

By adopting the technical scheme, when water in the water tank is subsequently replaced, the water in the water tank can be discharged through the water nozzle at the water outlet, and the water tank can store water through the water nozzle at the water inlet and has the function of opening and closing the water inlet.

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

1. the first exhaust fan pumps air into the device, and the air is exhausted out of the shell through the water tank and the filter box and then through the second exhaust fan, wherein most impurities in the air are firstly filtered by the water tank and then filtered by the filter assembly in the filter box, so that the service life of the filter assembly is prolonged, and meanwhile, the detachable filter assembly is beneficial to cleaning or replacing the filter assembly subsequently, so that the filtering effect of the air is improved;

2. the filter plate can be placed in the storage frame, and meanwhile, the storage frame can enter and exit the filter box through the long-strip-shaped through hole in the side wall of the filter box, so that the filter plate can be cleaned or replaced, and the air filtering effect is improved;

3. the locking assembly can limit the filtering assembly, and the baffle is made to cling to the side wall of the filtering box to seal the filtering box.

Drawings

Fig. 1 is a schematic view of the overall structure of a filter device according to an embodiment of the present application.

FIG. 2 is a schematic view of the filtering apparatus according to the embodiment of the present application, with the door omitted.

FIG. 3 is a schematic cross-sectional view of a filter box, a filter assembly and a locking assembly according to an embodiment of the present application.

FIG. 4 is a schematic structural view of a filter assembly and a locking assembly according to an embodiment of the present disclosure.

Description of reference numerals: 1. a housing; 11. briquetting; 12. a spring; 13. a travel bar; 14. a connecting rod; 15. a bump; 16. a fixed block; 17. connecting blocks; 18. a support block; 19. a first handle; 2. a water tank; 21. a hose; 22. a suction hood; 23. a filter screen; 24. a water nozzle; 25. a box door; 26. cushion blocks; 27. a hinge; 28. a second handle; 29. a strip-shaped through hole; 3. an air inlet pipe; 31. a through hole; 4. a first exhaust fan; 5. a filter box; 6. a communicating pipe; 7. a second exhaust fan; 8. an exhaust pipe; 9. a storage frame; 91. a first fixing plate; 92. a second fixing plate; 93. a connecting strip; 10. a baffle plate; 20. a connecting pipe; 30. and a guide through hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses air filter for environmental protection engineering. Referring to fig. 1 and 2, the air filtering device for environmental protection engineering includes a casing 1, a through hole 31 is provided on the side wall of the casing 1, a box door 25 for opening and closing the through hole 31 is provided at the position of the casing 1 opposite to the through hole 31, the outer side surface of the box door 25 is hinged to the casing 1 through two hinges 27, and a second handle 28 is welded at the other end of the box door 25, which is located far away from the hinges 27, on the outer side surface of the box door 25, so that the box door 25 is convenient for an operator to overhaul and maintain the air filtering device while protecting the air filtering device. Be provided with cushion 26 in the casing 1, top fixedly connected with water tank 2 of cushion 26, one side of water tank 2 is provided with rose box 5, the vertical intake pipe 3 that is provided with in top of casing 1, the top of casing 1 and the top of water tank 2 are passed and extend to the bottom of water tank 2 to the one end of intake pipe 3, and the one side fixedly connected with that just is located near rose box 5 on the top surface of water tank 2 communicates communicating pipe 6 and water tank 2, the other end of communicating pipe 6 and the top fixed connection of rose box 5 just communicate with rose box 5. One end of the air inlet pipe 3 far away from the shell 1 is fixedly connected with a first exhaust fan 4, in the embodiment, the first exhaust fan 4 is an axial flow exhaust fan, an air inlet of the axial flow exhaust fan is fixedly connected with a connecting pipe 20, one end of the connecting pipe 20 far away from the axial flow exhaust fan is fixedly connected with a hose 21, in this embodiment, the hose 21 may be a common hose 21 or a flexible bellows, one end of the hose 21 away from the connection pipe 20 is fixedly connected with a suction hood 22, a filter net 23 for primarily filtering and intercepting dust and other impurities in the air is detachably connected in the suction hood 22, the water in the water tank 2 can further filter dust and impurities such as water-soluble particles in the air, so that the matching use of the water tank 2 and the filter screen 23 can reduce the adsorption amount of the filter assembly to the dust and other impurities, and prolong the life of water and filtering component in water tank 2, filter screen 23 detachable design also makes things convenient for operating personnel to pull down filter screen 23 and wash. The second exhaust fan 7 is fixedly installed below the filter box 5 and on the bottom of the inner side of the shell 1, an air inlet pipe 3 of the second exhaust fan 7 is fixedly connected with the bottom of the filter box 5 and communicated with the filter box 5, an air outlet pipe of the second exhaust fan 7 is fixedly connected with an exhaust pipe 8, the exhaust pipe 8 penetrates through the side wall of the shell 1 and extends out of the shell 1, and filtered air is discharged.

Referring to fig. 1 and 2, water tank 2 is provided with delivery port and water inlet respectively towards the lower lateral wall and the last lateral wall of chamber door 25, and water injection well choke 24 is all installed with the water inlet to water tank 2 corresponding delivery port, and the equal external water pipe of two water injection well choke 24 is arranged in supplementary water of changing water tank 2, has the effect of sealed water inlet and delivery port simultaneously concurrently for water tank 2 keeps delivery port and water inlet all to be in encapsulated situation when filtered air.

Referring to fig. 3 and 4, three filter assemblies are detachably arranged in the filter box 5 along the vertical direction, and each filter assembly is composed of a storage frame 9, a baffle 10 and a filter plate arranged in the storage frame 9. Rectangular shape through-hole 29 has been seted up on the side of rose box 5, put one side of thing frame 9 and the side fixed connection of baffle 10, wherein, it comprises two first fixed plates 91 to put thing frame 9, a second fixed plate 92 and two connecting strips 93, two first fixed plates 91 are parallel and relative setting, two first fixed plates 91 all with the biggest side fixed connection of baffle 10 area with one end, the terminal surface that baffle 10 was kept away from to two first fixed plates 91 corresponds respectively welded fastening with the both ends of second fixed plate 92, two relative downside of first fixed plate 91 and the both ends face welded fastening of connecting strip 93 and two connecting strip 93 interval distribution, connecting strip 93 can play the supporting role to the filter of placing in putting thing frame 9 from this. The second fixing plate 92 can pass through the elongated through hole 29 on the filter box 5 and abut against the inner side wall of the filter box 5 opposite to the elongated through hole 29, meanwhile, the side surface of the baffle plate 10 facing the second fixing plate 92 is attached to the side surface of the filter box 5 provided with the elongated through hole 29, and the area of the side surface of the baffle plate 10 attached to the filter box 5 is larger than the area of the opening of the elongated through hole 29. In this embodiment, the filter plate may be a filter net 23, a block-shaped filter cotton, or a filter plate made of activated carbon. The filter sets up on connecting strip 39 and is located and puts thing frame 9. Baffle 10 can play the effect of opening and close to rose box 5, and put thing frame 9 and can realize being connected with dismantling of rose box 5, and when absorbent debris was too much on the filter, removable filter assembly washd or changed the filter to improve filtration's efficiency.

Referring to fig. 3 and 4, the two opposite side surfaces of the two first fixing plates 91 are respectively welded with the connecting blocks 17, the length of each connecting block 17 is identical to that of the corresponding first fixing plate 91, the two inner side surfaces of the filter box 5 opposite to the first fixing plates 91 are welded with the supporting blocks 18 which are matched with the connecting blocks 17 in a supporting manner, and when the storage frame 9 is installed in the filter box 5, the top surfaces of the supporting blocks 18 are attached to the bottom surfaces of the connecting blocks 17. From this, supporting shoe 18 plays supporting role to thing frame 9, makes the connection of putting thing frame 9 and rose box 5 more stable, puts thing frame 9 simultaneously and can slide along the direction of shifting out or moving into rose box 5 inside, makes things convenient for operating personnel to take out or place the filter assembly.

Referring to fig. 3 and 4, the baffle 10 is fixedly disposed on the outer side wall of the filtering box 5 by a locking assembly, the locking assembly is composed of a pressing block 11, a spring 12, a moving rod 13, a connecting rod 14 and a projection 15, one end of the moving rod 13 and the side of the pressing block 11 facing the baffle 10 are welded and fixed, in this embodiment, the pressing block 11 is a knob, a guide through hole 30 penetrating through the baffle 10 is formed on the side of the baffle 10 facing the knob, one end of the moving rod 13 close to the baffle 10 penetrates through the guide through hole 30 on the baffle 10, one end of the moving rod 13 penetrating through the baffle 10 penetrates through a long strip-shaped through hole 29 on the filtering box 5 and extends into the filtering box 5, the lowest end of the periphery of the moving rod 13 is located above the top surface of the first fixing plate 91, and the moving rod 13 can move in the direction toward or away from the inside of the storage frame 9 by the guide, one end of the moving rod 13 far away from the knob is fixedly connected with one end of the connecting rod 14, the axes of the moving rod 13 and the connecting rod 14 are perpendicular to each other, the moving rod 13 is located at the tail end of the connecting rod 14 and faces towards the side face of the knob and is fixedly connected with the bump 15, the inner side face of the filter box 5 is fixedly connected with the bump 15 and abuts against the fixing block 16, when the storage frame 9 is installed inside the filter box 5 and the connecting rod 14 is vertically placed, the top face of the fixing block 16 can abut against the bottom face of the bump 15, the end face of the bump 15, which deviates from the moving rod 13, abuts against the inner side wall of the filter box 5 at the moment, the spring 12 is sleeved on the moving rod 13, one end of the spring 12 is fixedly connected with the side face of the baffle 10, which faces towards the knob, the other end of the spring 12 is fixedly connected with the. When the filter assembly needs to be placed in the filter box 5, the knob is firstly twisted to enable the connecting rod 14 to rotate to the horizontal position, then the storage frame 9 is pushed into the filter box 5 through the elongated through hole 29, then the knob is pressed tightly, the spring 12 is further compressed, the moving rod 13, the whole formed by the connecting rod 14 and the lug 15 moves towards the direction far away from the baffle plate 10, the press block 11 is twisted again to enable the connecting rod 14 to be in the vertical state, the knob is loosened, the spring 12 rebounds, the bottom of the lug 15 is abutted to the top of the fixing block 16, the end portion of the lug 15 is abutted to the inner side wall of the filter box 5, the locking process of the filter assembly is completed, and the action process of taking out the filter assembly is.

Referring to fig. 3, a first handle 19 is welded and fixed on the side of the baffle 10 facing away from the filter box 5 and below the knob, so that an operator can take out or place the filter assembly conveniently.

The implementation principle of the air filtering device for the environmental protection engineering in the embodiment of the application is as follows: when the air needs to be filtered, an operator can place the suction hood 22 on the hose 21 at a proper position, the axial flow exhaust fan and the second exhaust fan 7 are started, at the moment, the air firstly filters partial dust and large-particle impurities through the filter screen 23 in the suction hood 22, the air is conveyed to the water tank 2 through the hose 21, the connecting pipe 20 and the air inlet pipe 3 through the axial flow exhaust fan, most dust and water-soluble particles are filtered through water in the water tank 2, the air then enters the filter box 5 through the communicating pipe 6 and is finally filtered, and finally the air is extracted through the second exhaust fan 7 and is discharged out of the shell 1, so that the impurity adsorption capacity of a filter assembly can be effectively reduced through the matching use of the filter screen 23 and the water tank 2, the service life of the filter plate is prolonged, and the air filtering effect is improved. Along with the use of the air filter device, when the filter plate adsorbs sundries too much, an operator can take out the filter assembly and clean or replace the filter plate, the action process is that the extrusion knob drives the moving rod 13 to move towards the direction far away from the box door 25, the lug 15 is separated from the fixed block 16, then the knob is rotated to enable the connecting rod 14 to be in the horizontal position, the knob is loosened, the spring 12 rebounds, the moving rod 13 drives the lug 15 to move towards the direction close to the baffle 10, the lug 15 is finally abutted against the baffle 10, then the operator holds the first handle 19 on the baffle 10 again, the filter assembly can be replaced or cleaned by pulling out the filter assembly, the action process of placing the filter assembly and locking is opposite to the taking-out process, therefore, the filter plate can be cleaned or replaced, the filter assembly keeps good filtering capacity, and the.

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

Claims

1. An air filter device for environmental protection engineering, characterized in that it comprises a casing (1) and a water tank (2) arranged at the bottom of the inner side of the casing (1), and the top of the casing (1) is provided with an air intake pipe (3), one end of the air intake pipe (3) sequentially passes through the casing (1) and the top of the water tank (2) and extends to the bottom of the water tank (2), the casing The top of (1) is provided with a first exhaust fan (4), and the air outlet of the first exhaust fan (4) is fixedly connected and communicated with the upper end of the air intake pipe (3). ) and located on one side of the water tank (2) is provided with a filter box (5), and a communication pipe (6) is communicated between the top of the filter box (5) and the top of the water tank (2), The filter box (5) is detachably provided with a number of filter assemblies, the inner bottom of the housing (1) is provided with a second exhaust fan (7), and the air intake pipe (7) of the second exhaust fan (7) 3) It is fixedly connected with the filter box (5), and the air outlet pipe of the second exhaust fan (7) is fixedly connected with an exhaust pipe which penetrates through the casing (1) and extends to the outside of the casing (1). Trachea (8).

2. An air filter device for environmental protection engineering according to claim 1, characterized in that: the filter assembly comprises a storage frame (9), a baffle plate (10) and a detachable installation on the storage frame (9) The filter plate inside the filter box (5) is provided with elongated through holes (29) on the side, and the storage frame (9) passes through the elongated through holes (29) and through a connecting assembly Installed inside the filter box (5), the baffle plate (10) is fixedly arranged at one end of the storage frame (9), and the baffle plate (10) is used to open and close the elongated passage. hole (29).

3. An air filter device for environmental protection engineering according to claim 2, characterized in that: the connection assembly comprises a connection block (17) and a support block (18) for supporting the connection block (17), The connecting block (17) is fixedly connected to the opposite sides of the storage frame (9), and the support block (18) is arranged on the opposite side of the filter box (5) and the storage frame (9). on both inner sides.

4. An air filter device for environmental protection engineering according to claim 2, characterized in that: the baffle plate (10) is fixedly arranged on the outer side wall of the filter box (5) through a locking assembly, and the The locking assembly includes a pressing block (11), a spring (12), a moving rod (13), a connecting rod (14) and a convex block (15), and one end of the moving rod (13) is connected to the pressing block (11) Fixed connection, one end of the moving rod (13) away from the pressing block (11) passes through the baffle plate (10) and is fixedly connected with the connecting rod (14), and the connecting rod (14) has a fixed connection. The axis is perpendicular to the axis of the moving rod (13), is located at the end of the connecting rod (14) and faces the side of the pressing block (11) and is fixedly connected with the projection (15), and the spring ( One end of 12) is fixedly connected to the side of the pressing block (11) facing the filter box (5), and the other end of the spring (12) and the baffle plate (10) facing the pressing block (11) The side surface of the filter box (5) is fixedly connected with the baffle (10), and the inner side of the side of the filter box (5) is provided with a fixing block (16) that can abut against the bottom surface of the convex block (15). When the baffle plate (10) is in contact with the outer side surface of the filter box (5) and the spring (12) is in a natural state, the protrusion (15) is abutted against the fixing block (16) catch.

5 . The air filter device for environmental protection engineering according to claim 4 , wherein the baffle plate ( 10 ) faces away from the side of the storage frame ( 9 ) and is located below the pressing block ( 11 ). 6 . A first handle (19) is provided.

6. An air filter device for environmental protection engineering according to claim 1, characterized in that: the air inlet of the first exhaust fan (4) is fixedly connected with a connecting pipe (20), and the connecting pipe (20) ) a hose (21) is fixedly connected to one end away from the first exhaust fan (4), and a suction hood (22) is fixedly connected to the end of the hose (21) away from the connecting pipe (20), and the suction hood (22) A filter screen (23) for intercepting dust is detachably installed in the opening of ).

7 . The air filter device for environmental protection engineering according to claim 2 , wherein a through hole ( 31 ) is opened on the opposite side of the housing ( 1 ) and the baffle plate ( 10 ), and A box door (25) for opening and closing the through hole (31) is hinged to the position of the casing (1) relative to the through hole (31).

8 . The air filter device for environmental protection engineering according to claim 7 , wherein the lower side wall and the upper side wall of the water tank ( 2 ) facing the box door ( 25 ) are respectively provided with water outlets correspondingly. 9 . and a water inlet, the water outlet and the water inlet are fixedly connected with a water nozzle (24).