CN111773906A - Waste gas treatment device of non-woven fabric production equipment and manufacturing method thereof - Google Patents

Abstract

The invention discloses a waste gas treatment device for non-woven fabric production equipment and a manufacturing method thereof, and relates to the technical field of waste gas treatment equipment. The utility model comprises a protective shell, which is characterized in that one end of the protective shell is screwed with a fan, the other end of the protective shell is provided with an air outlet, a plurality of filter plates are fixed inside the protective shell, and one end of the upper end of the protective shell is welded with a fixed base to protect the protective shell. A cleaning mechanism is installed at one end of the housing, and the cleaning mechanism includes a servo motor, a plurality of transmission shafts, a plurality of limit rings, a plurality of rotating plates, a plurality of lifting plates, and a plurality of cleaning brushes. The patent of the present invention can clean the filter plate by setting the cleaning mechanism, so as to effectively avoid the blocking phenomenon when filtering the exhaust gas. Through the cooperation of various accessories, the medicine can be better sprayed into the inside of the protective shell to purify the exhaust gas. , and can automatically recycle the waste generated during purification.

Description

A kind of non-woven fabric production equipment waste gas treatment device and manufacturing method thereof

technical field

The invention relates to the technical field of waste gas treatment equipment, in particular to a waste gas treatment device of non-woven fabric production equipment and a manufacturing method thereof.

Background technique

Non-woven fabrics, also known as non-woven fabrics, are composed of directional or random fibers. They are called cloths because of their appearance and certain properties. Non-woven fabrics are moisture-proof, breathable, flexible, lightweight, non-combustible, easy Decomposition, non-toxic and non-irritating, rich in color, low price, recyclable and other characteristics, such as using polypropylene pellets as raw materials, through high-temperature melting, spinning, laying, hot-pressing and coiling continuous one-step production. In the production process of non-woven fabrics, a large amount of waste gas will be generated, so it is necessary to use a waste gas treatment device to treat the waste gas. It is more difficult to recover the waste residue generated in the process.

Invention patent content

The purpose of the patent of the present invention is to provide a non-woven fabric production equipment waste gas treatment device and a manufacturing method thereof, to solve the existing problems: when using a filter screen to filter the waste gas in the prior art, the filter screen is prone to blockage, And it is more difficult to recover the waste residue generated in the filtration process.

In order to achieve the above purpose, the present invention provides the following technical solutions: a non-woven fabric production equipment waste gas treatment device, comprising a protective casing, one end of the protective casing is screwed with a fan, and the other end of the protective casing is provided with an air outlet, A plurality of filter plates are fixed inside the protective shell, one end of the upper end of the protective shell is welded with a fixed base, and one end of the protective shell is installed with a cleaning mechanism;

The cleaning mechanism includes a servo motor, a plurality of transmission shafts, a plurality of limit rings, a plurality of rotating plates, a plurality of lifting plates, and a plurality of cleaning brushes, and the plurality of the rotating plates are snap-connected among the plurality of transmission shafts. During the time, a plurality of the limit rings are respectively located inside the plurality of rotating plates, and one end of the limit rings and the rotating plates are connected by sliding, and the plurality of lifting plates are respectively fixed in the middle of the lower ends of the plurality of limit rings position, a plurality of cleaning brushes are respectively fixed on the lower end of one end of the plurality of lifting plates, and the cleaning brushes are located on one side of the filter plate, the servo motor screw is connected to the upper end of the fixed base, and the output end of the servo motor and one of the The drive shaft at one end is connected by a snap connection.

Preferably, a liquid collecting plate is fixed at the lower end of the inside of the protective casing, a water guide groove is opened in the middle of the liquid collecting plate, and a liquid outlet pipe is fixed at the lower end of the water guide groove through the protective casing. A spray mechanism is installed on the side.

Preferably, the spraying mechanism includes a water storage tank, a plurality of water guide branch pipes, a plurality of atomizing nozzles, a water pump and a water guide main pipe, the water storage tank is fixed on one side of the protective casing, and the water pump is fixed on the water storage At the upper end of the tank, the water guiding main pipe is fixed on the output end of the water pump, a plurality of the water guiding branch pipes are all fixed on one side of the water guiding main pipe through the protective casing, and the plurality of the atomizing nozzles are all threadedly connected to the water guiding branch pipe , and the atomizing nozzle is located inside the protective casing.

Preferably, the lower ends of the protective shell are connected with four support rods by welding, and the lower ends of the four support rods are all sleeved and connected with pads, and the lower ends of the pads are provided with anti-skid patterns, and the support rods include a first Bearing rod, second bearing rod, four threaded strips, reinforcement ring, six limit cavities, connecting ring, fixing plate, six positioning rods, threaded block, four first slide rails and four second slide rails, The second load-bearing rod is welded and connected to the lower end of the protective casing, the threaded block is welded to the lower end of the second load-bearing rod, the fixing plate is welded to the lower end of the outer side of the second load-bearing rod, and the positioning rod is welded and connected At the lower end of the fixing plate, the connecting ring is threadedly connected to the outer side of the threaded block, the reinforcing ring is rotatably connected to the lower end of the connecting ring, the first load-bearing rod is connected to the inside of the second load-bearing rod, and the fourth The threaded strip is welded and connected to the peripheral side of the first bearing rod, and the second sliding rail is opened inside the second bearing rod and is located on the peripheral side of the first bearing rod, and the threaded strip and the second sliding rail pass through sliding 4. The first slide rail is opened inside the reinforcement ring and is located on the peripheral side of the first load-bearing rod, and the thread strip and the first slide rail are connected by sliding, and the limit cavity is opened in the reinforcement ring. The upper end is located on the peripheral side of the first load-bearing rod, and the limiting cavity and the positioning rod are connected by plugging.

Preferably, an auxiliary bracket is fixed at one end of the protective shell, and the auxiliary bracket and the water conduit are connected by socket connection.

Preferably, a sealing valve is installed in the middle of the liquid outlet pipe.

Preferably, the upper end of one end of the water storage tank is connected with a water inlet pipe by welding.

Preferably, a reinforcing plate is welded and connected to the upper end of the protective casing, and the reinforcing plate and the transmission shaft located at the end farthest from the servo motor are connected by rotation.

Preferably, a reinforcement block is welded and connected to the upper end of the protective shell and is located on the outer side of the lift plate, and the reinforcement block and the lift plate are connected by sliding.

A method of using a waste gas treatment device for non-woven fabric production equipment, which is used for any one of the above-mentioned waste gas treatment devices for non-woven fabric production equipment, the steps are as follows:

S1: Rotate the connecting ring to separate the connecting ring and the threaded block, and pull out the positioning rod from the interior of the limit cavity;

S2: Rotate the reinforcement ring, let the reinforcement ring drive the first load-bearing rod to rotate, so that the threaded strip is located inside the second slide rail;

S3: slide the second load-bearing rod vertically to adjust the length of the first load-bearing rod protruding from the second load-bearing rod, so as to adjust the height of the device;

S4: Rotate the reinforcement ring again, let the reinforcement ring drive the first load-bearing rod to rotate, so that the threaded strip and the second slide rail are dislocated;

S5: Slide the reinforcement ring to insert the positioning rod into the limit cavity;

S6: Rotate the connecting ring so that the connecting ring and the threaded block are connected by thread;

S7: Start the fan, after the fan is started, the external exhaust gas will be blown into the interior of the protective casing;

S8: Turn on the water pump, let the water pump send the medicine inside the water storage tank to the inside of the water guide branch pipe through the water guide main pipe, and then spray it into the inside of the protective shell through the atomizing nozzle, so that the chemical reaction occurs between the medicine and the internal exhaust gas of the protective shell. Purify the exhaust gas;

S9: The purified gas will be discharged through the air outlet after being filtered by the filter plate;

S10: Turn on the servo motor. After the servo motor is turned on, the cleaning brush will be driven by the rotating transmission shaft to repeatedly clean the filter plate;

S11: The purified residue will fall into the inside of the liquid collecting plate, then fall into the inside of the water guide along the slope of the liquid collecting plate, and fall into the inside of the liquid outlet pipe along the slope of the water guide;

S12: Open the sealing valve and discharge the residue through the liquid outlet pipe.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention can clean the filter plate by setting the cleaning mechanism, so as to effectively avoid clogging when filtering the exhaust gas;

2. In the present invention, through the cooperation of various accessories, the agent can be better sprayed into the interior of the protective casing to purify the exhaust gas, and the waste generated during purification can be automatically recovered.

Description of drawings

In order to illustrate the technical solutions of the patented embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the overall structure schematic diagram of one end of the present invention;

Fig. 2 is the overall structure schematic diagram of the other end of the present invention;

Fig. 3 is the overall cutaway structure schematic diagram of one end of the present invention;

Fig. 4 is the overall cutaway structure schematic diagram of the other end of the present invention;

Fig. 5 is the large-scale drawing of the cleaning mechanism of the present invention;

Fig. 6 is the large-scale drawing of the spraying mechanism of the present invention;

Fig. 7 is the partial cutaway large sample view of the support rod of the present invention;

FIG. 8 is a partial enlarged view of the part A in FIG. 7 of the present invention.

In the figure: 1. Protective shell; 2. Fan; 3. Support rod; 4. Foot; 5. Water tank; 6. Cleaning mechanism; 7. Fixed base; 8. Auxiliary bracket; 9. Reinforcing plate; 10. Reinforcement block; 11, liquid outlet pipe; 12, sealing valve; 13, air outlet; 14, water inlet pipe; 15, liquid collecting plate; 16, filter plate; 17, water guide; 18, servo motor; 19, transmission shaft; 20 , limit ring; 21, rotating plate; 22, lift plate; 23, cleaning brush; 24, water conduit; 25, atomizing nozzle; 26, water pump; 27, water conduit; 28, spraying mechanism; 29, No. A load-bearing rod; 30, the second load-bearing rod; 31, the thread strip; 32, the reinforcement ring; 33, the limit cavity; 34, the connecting ring; 35, the fixing plate; 36, the positioning rod; 37, the threaded block; 38, the first A slide rail; 39, a second slide rail.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

Please refer to Figures 1-8, a non-woven fabric production equipment waste gas treatment device and its manufacturing method, including a protective shell 1, the lower end of the protective shell 1 is connected with four support rods 3 by welding, and the lower ends of the four support rods 3 are all sleeved A foot 4 is connected to the foot, and the lower end of the foot 4 is provided with an anti-skid pattern. The support rod 3 includes a first load-bearing rod 29, a second load-bearing rod 30, four threaded bars 31, a reinforcement ring 32, six limit cavities 33, connection Ring 34, fixing plate 35, six positioning rods 36, threaded blocks 37, four first sliding rails 38 and four second sliding rails 39, the second bearing rod 30 is welded and connected to the lower end of the protective casing 1, the threaded block 37 The lower end of the second load-bearing rod 30 is welded and connected to the lower end of the second load-bearing rod 30 , the fixing plate 35 is welded to the lower end of the outer side of the second load-bearing rod 30 , the six positioning rods 36 are welded to the lower end of the fixing plate 35 , and the connecting ring 34 is threadedly connected to the outer side of the threaded block 37 , the reinforcing ring 32 is rotatably connected to the lower end of the connecting ring 34, the first bearing rod 29 is plugged and connected to the inside of the second bearing rod 30, the four threaded bars 31 are welded and connected to the peripheral side of the first bearing rod 29, and the four second sliding The rail 39 is opened inside the second bearing rod 30 and is located on the peripheral side of the first bearing rod 29, and the threaded strip 31 and the second sliding rail 39 are connected by sliding, and the four first sliding rails 38 are opened inside the reinforcement ring 32 and It is located on the peripheral side of the first bearing rod 29, and the threaded rod 31 and the first slide rail 38 are connected by sliding. The cavity 33 and the positioning rod 36 are connected by plug connection, so that the device can be fixed more conveniently. One end of the protective casing 1 is screwed with the fan 2, and the other end of the protective casing 1 is provided with an air outlet 13. A filter plate 16, one end of the upper end of the protective casing 1 is welded with a fixed base 7, and one end of the protective casing 1 is installed with a cleaning mechanism 6;

The cleaning mechanism 6 includes a servo motor 18, a plurality of transmission shafts 19, a plurality of limit rings 20, a plurality of rotating plates 21, a plurality of lifting plates 22, and a plurality of cleaning brushes 23. Between the transmission shafts 19 , the limit rings 20 are respectively located inside the rotation plates 21 , and the limit rings 20 and one end of the rotation plates 21 are connected by sliding, and the lift plates 22 are respectively fixed on the limit rings 21 . In the middle position of the lower end of the ring 20, the upper end of the protective shell 1 and the outer side of the lifting plate 22 are welded and connected with the reinforcement block 10, and the reinforcement block 10 and the lifting plate 22 are connected by sliding, so that the lifting plate 22 can be adjusted by setting the reinforcement block 10. Reinforcement, a plurality of cleaning brushes 23 are respectively fixed on the lower end of one end of the plurality of lifting plates 22, and the cleaning brushes 23 are located on one side of the filter plate 16, the servo motor 18 is screwed on the upper end of the fixed base 7, and the output end of the servo motor 18 It is connected with one of the transmission shafts 19 at one end by snap connection, the upper end of the protective casing 1 is welded and connected with a reinforcement plate 9, and the reinforcement plate 9 and the transmission shaft 19 at the end farthest from the servo motor 18 are connected by rotation. The plate 9 can reinforce the cleaning mechanism 6;

A liquid collecting plate 15 is fixed at the lower end of the protective casing 1, and a water guiding groove 17 is opened in the middle position of the liquid collecting plate 15. The lower end of the water guiding groove 17 penetrates the protective casing 1 and is fixed with a liquid outlet pipe 11, and the middle position of the liquid outlet pipe 11 is installed. There is a sealing valve 12, so that the liquid outlet pipe 11 can be better controlled by installing the sealing valve 12, and a spraying mechanism 28 is installed on one side of the protective casing 1, so that the spraying mechanism 28 can better send the medicine into the protective casing 1. Inside, purify the exhaust gas inside the protective shell 1;

The spraying mechanism 28 includes a water storage tank 5, a plurality of water guiding branch pipes 24, a plurality of atomizing nozzles 25, a water pump 26 and a water guiding main pipe 27. The upper end is connected with the water inlet pipe 14 by welding, so that the water inlet pipe 14 can better add chemicals to the water storage tank 5, the water pump 26 is fixed on the upper end of the water storage tank 5, and the water guide pipe 27 is fixed on the output end of the water pump 26 to protect the One end of the casing 1 is fixed with an auxiliary bracket 8, and the auxiliary bracket 8 and the water guiding main pipe 27 are connected by socket connection, so that the water guiding main pipe 27 can be reinforced by setting the auxiliary bracket 8, and the plurality of water guiding branch pipes 24 penetrate through the protective casing 1. Fixed on one side of the water conduit main pipe 27, a plurality of atomizing nozzles 25 are threadedly connected to the lower end of the water guiding branch pipe 24, and the atomizing nozzles 25 are located inside the protective casing 1, so that the spraying mechanism 28 can better spray the medicine. spray.

Embodiment 2:

On the basis of the present embodiment 1, a method for using a waste gas treatment device for a non-woven fabric production equipment is disclosed, and the steps are:

Step 1: Rotate the connecting ring 34 to separate the connecting ring 34 and the threaded block 37, and make the positioning rod 36 withdraw from the interior of the limiting cavity 33;

Step 2: Rotate the reinforcement ring 32, and let the reinforcement ring 32 drive the first load-bearing rod 29 to rotate, so that the threaded strip 31 is located inside the second slide rail 39;

The third step: slide the second load-bearing rod 30 vertically, adjust the length of the first load-bearing rod 29 extending from the second load-bearing rod 30, thereby adjusting the height of the device;

Step 4: Rotate the reinforcement ring 32 again, let the reinforcement ring 32 drive the first load-bearing rod 29 to rotate, so that the threaded strip 31 and the second slide rail 39 are misaligned;

Step 5: slide the reinforcement ring 32 to insert the positioning rod 36 into the limit cavity 33;

Step 6: Rotate the connecting ring 34 so that the connecting ring 34 and the threaded block 37 are connected by thread; the above operation can make the height adjustment more stable, avoid the loosening of the thread caused by corrosion after a long time, and improve the service life.

Step 7: Start the fan 2, after the fan 2 is started, the external exhaust gas will be blown into the interior of the protective shell 1;

The eighth step: turn on the water pump 26, let the water pump 26 send the medicine inside the water storage tank 5 into the inside of the water guide branch pipe 24 through the water guide main pipe 27, and then spray it into the inside of the protective shell 1 through the atomizing nozzle 25, so that the medicine and the The internal exhaust gas of the protective casing 1 undergoes a chemical reaction to purify the exhaust gas;

The ninth step: the purified gas will be discharged through the air outlet 13 after being filtered by the filter plate 16;

The tenth step: turn on the servo motor 18. After the servo motor 18 is turned on, it will drive the rotating plate 21 to rotate together through the rotating transmission shaft 19, because one end of the rotating plate 21 and the limit ring 20 are connected by sliding, and the limit ring 20 is lifted and lowered. The limit of the plate 22 can only slide vertically. When the rotating plate 21 rotates, it will drive the limit ring 20 to move back and forth vertically, and when the limit ring 20 moves, it will drive the cleaning brush 23 to move together to clean the filter plate 16;

Step 11: The purified residue will fall into the inside of the liquid collecting plate 15, and then fall into the interior of the water guide 17 along the slope of the liquid collecting plate 15, and then fall into the liquid outlet pipe 11 along the slope of the water guide 17. internal;

The twelfth step; open the sealing valve 12, and discharge the residue through the liquid outlet pipe 11.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (10)

1. A non-woven production equipment waste gas treatment device, comprising a protective casing (1), characterized in that one end of the protective casing (1) is screwed with a fan (2), and the other side of the protective casing (1) is screwed. One end is provided with an air outlet (13), a plurality of filter plates (16) are fixed inside the protective shell (1), and a fixed base (7) is welded and connected to one end of the upper end of the protective shell (1). A cleaning mechanism (6) is installed on one end of the casing (1); The cleaning mechanism (6) includes a servo motor (18), a plurality of transmission shafts (19), a plurality of limit rings (20), a plurality of rotating plates (21), a plurality of lifting plates (22), and a plurality of A cleaning brush (23), a plurality of the rotating plates (21) are snap-connected between a plurality of transmission shafts (19), and a plurality of the limiting rings (20) are respectively located inside the plurality of rotating plates (21) , and one end of the limit ring (20) and the rotating plate (21) are connected by sliding, and a plurality of the lifting plates (22) are respectively fixed in the middle positions of the lower ends of the plurality of limit rings (20), and a plurality of cleaning The brushes (23) are respectively fixed on the lower ends of one end of the plurality of lifting plates (22), and the cleaning brushes (23) are located on one side of the filter plate (16), and the servo motor (18) is screwed to the bottom of the fixing base (7). the upper end, and the output end of the servo motor (18) and one of the transmission shafts (19) located at one end are connected by clamping. 2 . The waste gas treatment device of a non-woven fabric production equipment according to claim 1 , wherein a liquid collecting plate ( 15 ) is fixed at the lower end inside the protective shell ( 1 ), and the liquid collecting plate ( 15 ). 3 . ) is provided with a water guide groove (17) in the middle position, the lower end of the water guide groove (17) is fixed with a liquid outlet pipe (11) through the protective casing (1), and a spray mechanism is installed on one side of the protective casing (1). (28). 3. A non-woven fabric production equipment waste gas treatment device according to claim 2, characterized in that: the spraying mechanism (28) comprises a water storage tank (5), a plurality of water guiding branch pipes (24), a plurality of The atomizing nozzle (25), the water pump (26) and the water guiding main pipe (27), the water storage tank (5) is fixed on one side of the protective casing (1), and the water pump (26) is fixed on the water storage tank (1). 5) at the upper end, the water guide main pipe (27) is fixed on the output end of the water pump (26), and the plurality of water guide branch pipes (24) penetrate through the protective casing (1) and are fixed to one end of the water guide main pipe (27). On the side, a plurality of the atomizing nozzles (25) are all threadedly connected to the lower end of the water conduit (24), and the atomizing nozzles (25) are located inside the protective casing (1). 4. A non-woven fabric production equipment waste gas treatment device according to claim 1, characterized in that: the lower end of the protective shell (1) is connected with four support rods (3) by welding, and the four support rods The lower ends of (3) are all sleeved and connected with foot pads (4), and the lower ends of the foot pads (4) are provided with anti-skid patterns. The support rod (3) includes a first load-bearing rod (29), a second load-bearing rod ( 30), four threaded strips (31), reinforcement ring (32), six limit cavities (33), connecting ring (34), fixing plate (35), six positioning rods (36), threaded block (37) ), four first slide rails (38) and four second slide rails (39), the second load-bearing rod (30) is welded and connected to the lower end of the protective casing (1), and the threaded block (37) is welded Connected to the lower end of the second load-bearing rod (30), the fixing plate (35) is welded and connected to the lower end of the outer side of the second load-bearing rod (30), and the positioning rod (36) is welded to the lower end of the fixing plate (35). At the lower end, the connecting ring (34) is threadedly connected to the outer side of the threaded block (37), the reinforcing ring (32) is rotatably connected to the lower end of the connecting ring (34), and the first load-bearing rod (29) is plug-connected Inside the second load-bearing rod (30), the four threaded strips (31) are welded and connected to the peripheral side of the first load-bearing rod (29), and the fourth of the second slide rails (39) are provided on the second load-bearing rod ( 30) and on the peripheral side of the first load-bearing rod (29), and the threaded strip (31) and the second slide rail (39) are connected by sliding, and the first slide rail (38) is provided in the reinforcement. The inside of the ring (32) is located on the peripheral side of the first load-bearing rod (29), and the threaded strip (31) and the first slide rail (38) are connected by sliding, and the limit cavity (33) is opened in the The upper end of the reinforcement ring (32) is located on the peripheral side of the first load-bearing rod (29), and the limiting cavity (33) and the positioning rod (36) are connected by plugging. 5. A non-woven fabric production equipment waste gas treatment device according to claim 3, characterized in that: an auxiliary support (8) is fixed at one end of the protective shell (1), and the auxiliary support (8) and The main pipe (27) is connected by socket. 6 . The waste gas treatment device for non-woven fabric production equipment according to claim 2 , wherein a sealing valve ( 12 ) is installed in the middle position of the liquid outlet pipe ( 11 ). 7 . 7 . The waste gas treatment device for non-woven fabric production equipment according to claim 3 , wherein the upper end of one end of the water storage tank ( 5 ) is connected with a water inlet pipe ( 14 ) by welding. 8 . 8. A non-woven fabric production equipment waste gas treatment device according to claim 1, characterized in that: a reinforcing plate (9) is welded and connected to the upper end of the protective shell (1), and the reinforcing plate (9) It is connected with the transmission shaft (19) at the end farthest from the servo motor (18) through rotation. 9. A non-woven fabric production equipment waste gas treatment device according to claim 1, characterized in that: a reinforcement block (10) is welded and connected to the upper end of the protective casing (1) and is located at the outer side of the lift plate (22). , and the reinforcing block (10) and the lifting plate (22) are connected by sliding. 10. A method of using a non-woven fabric production equipment waste gas treatment device for use in a non-woven fabric production equipment waste gas treatment device as described in any one of claim 1-reinforcing block (10), characterized in that the step as follows: S1: Rotate the connecting ring (34) to separate the connecting ring (34) from the threaded block (37), and make the positioning rod (36) withdraw from the interior of the limiting cavity (33); S2: Rotate the reinforcement ring (32), and let the reinforcement ring (32) drive the first load-bearing rod (29) to rotate, so that the threaded strip (31) is located inside the second slide rail (39); S3: vertically slide the second load-bearing rod (30) to adjust the length of the first load-bearing rod (29) extending from the second load-bearing rod (30), thereby adjusting the height of the device; S4: Rotate the reinforcement ring (32) again, and let the reinforcement ring (32) drive the first load-bearing rod (29) to rotate, so that the threaded strip (31) and the second slide rail (39) are dislocated; S5: slide the reinforcement ring (32) to insert the positioning rod (36) into the limit cavity (33); S6: Rotate the connecting ring (34) so that the connecting ring (34) and the threaded block (37) are connected by thread; S7: start the fan (2), after the fan (2) is started, the external exhaust gas will be blown into the inside of the protective casing (1); S8: Turn on the water pump (26), let the water pump (26) send the medicine inside the water storage tank (5) through the water guiding main pipe (27) into the water guiding branch pipe (24), and then spray it through the atomizing nozzle (25) into the inside of the protective shell (1), so that the chemical reacts with the internal exhaust gas of the protective shell (1) to purify the exhaust gas; S9: the purified gas will be discharged through the air outlet (13) after being filtered by the filter plate (16); S10: Turn on the servo motor (18), after the servo motor (18) is turned on, the cleaning brush (23) will be driven by the rotating transmission shaft (19) to repeatedly clean the filter plate (16); S11: The purified residue will fall into the inside of the liquid collecting plate (15), and then fall into the inside of the water guide (17) along the slope of the liquid collecting plate (15), and then fall into the water guide (17) along the slope of the water guide (17). The inside of the liquid outlet pipe (11); S12; Open the sealing valve (12), and discharge the residue through the liquid outlet pipe (11).

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