Waste gas treatment device for soil remediation agent production

Abstract

The utility model relates to the technical field of soil remediation agent production, and discloses a waste gas treatment device for soil remediation agent production, which comprises a device box body, and a gas inlet pipe is arranged on the left side of the top end of the device box body. When the waste gas treatment device for soil remediation agent production is used for treating discharged waste gas with heat, a third valve and a first valve can be opened, a second valve can be closed, the hot waste gas is guided into a cooling pipe through a three-way pipe and a second gas conveying pipe, and the waste gas can be cooled in an auxiliary mode through the cooling pipe; an air blower is controlled to start to blow and cool a cooling pipe, cooling is accelerated, after waste gas is cooled, the waste gas can be guided into a first gas conveying pipe through a third connecting pipe and a first connecting pipe and then guided into a treatment box through the first gas conveying pipe to be purified, and the temperature of the waste gas before treatment can be reduced; the problem that hot waste gas generated in the production process of the soil remediation agent cannot be conveniently subjected to auxiliary cooling is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil conditioner production, in particular to an exhaust gas treatment device for soil conditioner production. Background Technique

[0002] A soil conditioner is a material used to improve the physical and chemical properties and biological activity of soil, which can improve the quality of soil and the growth conditions of crops. Its types can be divided into organic and inorganic. Organic soil conditioners are mainly composed of biological organic matter, such as rotten animal and plant residues and fertilizers. Inorganic soil conditioners are composed of different chemical components, including minerals, amino acids, water-soluble fertilizers, microbial fertilizers, etc. When producing and processing soil conditioners, due to the participation of chemical raw materials, some exhaust gases will be generated. In order to reduce the pollution impact of exhaust gases on the air, an exhaust gas treatment device for soil conditioner production is needed.

[0003] However, when the exhaust gas treatment device for soil conditioner production is used to treat some harmful exhaust gases generated during the production process of soil conditioners, the activated carbon medium can effectively adsorb and purify the harmful substances in the exhaust gas. However, when treating some exhaust gases with heat during the production process of soil conditioners, when the relatively hot exhaust gas is introduced into the device for purification treatment, it will cause the activated carbon filtering medium inside the device to be continuously heated overheat, resulting in deflagration, posing a safety hazard, and it is not convenient to assist in cooling and reducing the temperature of the hot exhaust gas generated during the production process of soil conditioners.

[0004] Now, a new type of exhaust gas treatment device for soil conditioner production is proposed to solve the above deficiencies. Content of the Utility Model

[0005] The purpose of the utility model is to provide an exhaust gas treatment device for soil conditioner production to solve the problem of inconvenient auxiliary cooling and temperature reduction of the hot exhaust gas generated during the production process of soil conditioners as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An exhaust gas treatment device for soil conditioner production, including a device box body, a gas inlet pipe is arranged on the left side of the top of the device box body, and a connection box is fixed on the right side of the gas inlet pipe, a second connecting pipe is fixed on the right side of the connection box, and a three-way pipe is arranged at the bottom end of the second connecting pipe, a first gas transmission pipe is arranged on the left side of the device box body, a treatment box is fixed inside the device box body, and an exhaust gas cooling mechanism capable of assisting in cooling the discharged hot exhaust gas is arranged on the top of the device box body;

[0007] The waste gas cooling mechanism includes a first connecting pipe, a first valve, a second valve, a third valve, a second air delivery pipe, an air outlet groove, a housing, a cooling pipe, a drain outlet, a blower, and a third connecting pipe. The bottom end of the device box body is fixedly installed with a housing, and the cooling pipe is fixed inside the housing. The right side of the bottom end of the housing is fixedly provided with a drain outlet. The right side of the housing is fixedly provided with a second air delivery pipe, and the top end of the second air delivery pipe is fixedly provided with a third valve. The top end of the first air delivery pipe is fixedly provided with a second valve. The left side of the housing is fixedly provided with a third connecting pipe, and the bottom end of the third connecting pipe is fixedly provided with a first valve. The right side of the first air delivery pipe penetrates through the inside of the left side of the device box body and is fixedly connected to the left side of the treatment box. The bottom end of the first valve is fixedly installed with a first connecting pipe. The bottom end of the housing is fixedly installed with a blower, and an air outlet groove is opened inside the top end of the housing.

[0008] Further, the top end of the second valve is fixedly installed between the left side of the bottom end of the tee pipe, and the top end of the third valve is fixedly installed between the right side of the bottom end of the tee pipe. The bottom end of the first connecting pipe penetrates through the inside of the left side of the top end of the device box body and is fixedly connected to the top end of the first air delivery pipe.

[0009] Further, the second air delivery pipe and the third connecting pipe are respectively communicated with the inside of the cooling pipe. The cooling pipe is arranged in a spiral structure inside the housing. The air outlet groove penetrates through the inside of the top end of the housing. A plurality of groups of the air outlet grooves are equidistantly opened inside the top end of the housing. The blower is communicated with the inside of the housing.

[0010] Preferably, a slot is arranged inside the connection box, and the front end of the slot penetrates through the inside of the front end of the connection box. An insertion rack is inserted inside the slot, and a filter screen is fixed inside the insertion rack. A handle is fixed at the front end of the insertion rack. The air inlet pipe is communicated with the inside of the second connecting pipe through the connection box.

[0011] Further, the insertion rack is communicated with the inside of the connection box.

[0012] Preferably, an inner frame is arranged inside the treatment box, and three activated carbon filters are fixed inside the inner frame. A fixing cover is vertically fixedly installed at the rear end of the treatment box, and compression springs are respectively fixed at the top and bottom of the rear end inside the fixing cover. A through groove is opened inside the rear end of the treatment box, and a push plate is vertically arranged inside the through groove. The front end of the compression spring is fixedly connected to the rear end of the push plate.

[0013] Further, a box cover is hingedly installed at the front end of the treatment box, and lock rods respectively penetrate through both sides of the top of the front end of the box cover. Threaded holes for cooperating with the lock rods are respectively opened on both sides of the top of the front end of the treatment box. External threads are arranged on the outer part of the lock rods.

[0014] Preferably, the bottom end of the second connecting pipe is fixedly installed between the top end of the three-way pipe. A fourth connecting pipe is fixed to the right side of the treatment box, and the right side of the fourth connecting pipe penetrates through the inside of the right side of the device box body. An exhaust fan is fixedly installed on the right side of the device box body. The first air delivery pipe and the fourth connecting pipe are respectively communicated with the inside of the treatment box. Support legs are respectively fixed at the four corners of the bottom end of the device box body, and a cover body is fixedly installed at the front end of the device box body.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The waste gas treatment device for soil conditioner production not only realizes the auxiliary cooling and temperature reduction of the hot waste gas generated during the production of soil conditioner, realizes the multi-stage filtration treatment of waste gas, but also realizes the convenient replacement of the purification treatment medium inside the device;

[0016] (1) By providing a device box body, a first connecting pipe, a first valve, a second valve, a first air delivery pipe, a three-way pipe, a third valve, a second air delivery pipe, an air outlet groove, a housing, a cooling pipe, a drain port, a blower, and a third connecting pipe, when the device is used to treat the waste gas generated during the production of soil conditioner, after connecting the intake pipe to the waste gas discharge port of the production equipment, when treating the discharged waste gas with heat, the third valve and the first valve can be opened, and the second valve can be closed at the same time to seal the inside of the first air delivery pipe. After the hot waste gas is introduced into the inside of the three-way pipe through the intake pipe and the second connecting pipe, it can then be introduced into the cooling pipe through the second air delivery pipe. By providing a cooling pipe with a spiral structure, the waste gas can be assisted in cooling and temperature reduction. By controlling the blower to start and blow air to cool the cooling pipe, the cooling efficiency of the internal waste gas can be improved. After the waste gas is cooled inside the cooling pipe, it can be introduced into the inside of the first air delivery pipe through the third connecting pipe and the first connecting pipe, and then introduced into the treatment box through the first air delivery pipe for purification treatment, which can reduce the waste gas temperature and improve the waste gas treatment effect. When treating some normal temperature waste gas, by closing the first valve and the third valve and opening the second valve, normal waste gas purification treatment can be carried out, and the state can be flexibly switched;

[0017] (2) By providing a connection box, a slot, a plug-in frame, and a filter screen, when introducing the waste gas into the device for treatment, a plug-in frame is inserted and installed inside the connection box. Through the filter screen provided inside the plug-in frame, some particulate impurities contained in the waste gas can be pre-filtered and removed, and combined with subsequent purification and filtration treatment, the waste gas can be subjected to multi-stage filtration treatment, improving the treatment effect of the waste gas. At the same time, setting the filter screen can also reduce the excessive fouling of the activated carbon filter element assembly inside the device;

[0018] (3) By providing a device box body, a treatment box, an inner frame, an activated carbon filter element, a locking rod, a threaded hole, a box cover, a fixing cover, a compression spring, a push plate and a through groove, when the device is in use and replacing the activated carbon filter element inside the treatment box, first remove the cover body from the front end of the device box body, and then unlock the box cover at the front end of the treatment box by screwing out the two groups of locking rods from the threaded holes respectively. After that, flip the box cover forward to open it. After the compression spring loses the thrust, it will rebound and use the push plate to push the inner frame forward from the inside of the treatment box. After pushing the inner frame out of the treatment box, it is convenient to replace the purification treatment medium inside the device. Description of the Drawings

[0019] Figure 1 It is a front view sectional structure schematic diagram of the present utility model;

[0020] Figure 2 For the present utility model Figure 1 An enlarged structure schematic diagram of part A in it;

[0021] Figure 3 It is a side view enlarged structure schematic diagram of the push plate of the present utility model;

[0022] Figure 4 It is a side view partial sectional enlarged structure schematic diagram of the cover body of the present utility model.

[0023] In the figure: 1, support leg; 2, device box body; 3, treatment box; 4, first air delivery pipe; 5, first connecting pipe; 6, first valve; 7, second valve; 8, air inlet pipe; 9, connection box; 10, second connecting pipe; 11, three-way pipe; 12, third valve; 13, second air delivery pipe; 14, air outlet groove; 15, outer shell; 16, cooling pipe; 17, drain port; 18, hair dryer; 19, third connecting pipe; 20, inner frame; 21, activated carbon filter element; 22, fourth connecting pipe; 23, exhaust fan; 24, slot; 25, plug rack; 26, filter screen; 27, box cover; 28, locking rod; 29, threaded hole; 30, fixing cover; 31, compression spring; 32, push plate; 33, through groove; 34, cover body. Detailed Embodiment

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] Embodiment 1: Please refer to Figures 1-4, An exhaust gas treatment device for the production of a soil remediation agent, including a device box body 2. On the left side of the top of the device box body 2, an air inlet pipe 8 is provided, and a connection box 9 is fixed on the right side of the air inlet pipe 8. A second connection pipe 10 is fixed on the right side of the connection box 9, and a tee pipe 11 is provided at the bottom end of the second connection pipe 10. A first air delivery pipe 4 is provided on the left side of the device box body 2. A treatment box 3 is fixed inside the device box body 2. An exhaust gas cooling mechanism for assisting in cooling and cooling the discharged hot exhaust gas is provided at the top of the device box body 2;

[0026] The exhaust gas cooling mechanism includes a first connection pipe 5, a first valve 6, a second valve 7, a third valve 12, a second air delivery pipe 13, an air outlet groove 14, a housing 15, a cooling pipe 16, a drain port 17, a blower 18 and a third connection pipe 19. The housing 15 is installed and fixed at the bottom end of the device box body 2, and the cooling pipe 16 is fixed inside the housing 15. The drain port 17 is fixed on the right side of the bottom end of the housing 15. The second air delivery pipe 13 is fixed on the right side of the housing 15, and the third valve 12 is fixed at the top end of the second air delivery pipe 13. The second valve 7 is fixed at the top end of the first air delivery pipe 4. The third connection pipe 19 is fixed on the left side of the housing 15, and the first valve 6 is fixed at the bottom end of the third connection pipe 19. The right side of the first air delivery pipe 4 penetrates through the inside of the left side of the device box body 2 and is fixedly connected to the left side of the treatment box 3. The first connection pipe 5 is installed and fixed at the bottom end of the first valve 6. The blower 18 is installed and fixed at the bottom end of the housing 15. An air outlet groove 14 is opened inside the top end of the housing 15;

[0027] The top end of the second valve 7 is installed and fixed between the left side of the bottom end of the tee pipe 11. The top end of the third valve 12 is installed and fixed between the right side of the bottom end of the tee pipe 11. The bottom end of the first connection pipe 5 penetrates through the inside of the left side of the top end of the device box body 2 and is fixedly connected to the top end of the first air delivery pipe 4. The second air delivery pipe 13 and the third connection pipe 19 are respectively communicated with the inside of the cooling pipe 16. The cooling pipe 16 is arranged in a spiral structure inside the housing 15. The air outlet groove 14 penetrates through the inside of the top end of the housing 15. A plurality of groups of the air outlet grooves 14 are equidistantly opened inside the top end of the housing 15. The blower 18 is communicated with the inside of the housing 15;

[0028] Specifically, as Figure 1As shown in the figure, when treating exhaust gas with heat, the third valve 12 and the first valve 6 can be opened, and the second valve 7 can be closed at the same time to seal the inside of the first gas pipeline 4. After the hot exhaust gas is introduced into the inside of the three-way pipe 11 through the intake pipe 8 and the second connecting pipe 10, it can then be introduced into the cooling pipe 16 through the second gas pipeline 13. By setting the cooling pipe 16 with a spiral structure, the exhaust gas can be assisted in cooling down. By controlling the blower 18 to start and blowing air to cool the cooling pipe 16, the cooling efficiency of the exhaust gas inside can be improved. After the exhaust gas cools down inside the cooling pipe 16, it can be introduced into the inside of the first gas pipeline 4 through the third connecting pipe 19 and the first connecting pipe 5, and then introduced into the treatment box 3 through the first gas pipeline 4 for purification treatment, which can reduce the exhaust gas temperature and improve the exhaust gas treatment effect. When treating some normal-temperature exhaust gas, by closing the first valve 6 and the third valve 12 and opening the second valve 7, normal exhaust gas purification treatment can be carried out, and the state can be flexibly switched.

[0029] Embodiment 2: A slot 24 is provided inside the connection box 9, and the front end of the slot 24 penetrates through the inside of the front end of the connection box 9. An insertion frame 25 is inserted into the slot 24, and a filter screen 26 is fixed inside the insertion frame 25. A handle is fixed at the front end of the insertion frame 25. The intake pipe 8 is connected to the inside of the second connecting pipe 10 through the connection box 9, and the insertion frame 25 is connected to the inside of the connection box 9;

[0030] Specifically, as Figure 1 and Figure 2 shown, an insertion frame 25 is inserted and installed inside the connection box 9. Through the filter screen 26 provided inside the insertion frame 25, some particulate impurities contained in the exhaust gas can be assisted in pre-filtering and removing. Cooperating with the subsequent purification and filtration treatment, the exhaust gas can be subjected to multi-stage filtration treatment, improving the exhaust gas treatment effect. At the same time, setting the filter screen 26 can also reduce the excessive fouling of the activated carbon filter element 21 assembly inside the device.

[0031] Embodiment 3: An inner frame 20 is provided inside the treatment box 3, and three groups of activated carbon filter elements 21 are fixed inside the inner frame 20. A fixed cover 30 is vertically installed and fixed at the rear end of the treatment box 3, and compression springs 31 are respectively fixed at the top and bottom of the rear end inside the fixed cover 30. A through groove 33 is opened inside the rear end of the treatment box 3, and a push plate 32 is vertically arranged inside the through groove 33. A fixed connection is established between the front end of the compression spring 31 and the rear end of the push plate 32. A box cover 27 is hingedly installed at the front end of the treatment box 3, and lock rods 28 are respectively penetrated through both sides of the top of the front end of the box cover 27. Threaded holes 29 for cooperating with the lock rods 28 are respectively opened on both sides of the top of the front end of the treatment box 3, and external threads are provided on the outside of the lock rods 28;

[0032] Specifically, as Figure 1 、 Figure 3 and Figure 4As shown, when replacing the activated carbon filter element 21 inside the processing box 3, first remove the cover body 34 from the front end of the device box body 2. Then, by screwing out the two groups of locking rods 28 from the threaded holes 29 respectively, the box cover 27 can be unlocked at the front end of the processing box 3. After that, flip the box cover 27 forward to open it. After the compression spring 31 loses the thrust, it will rebound and use the push plate 32 to push the inner frame 20 forward from the inside of the processing box 3. After pushing the inner frame 20 out of the processing box 3, the purification treatment medium inside the device can be conveniently replaced.

[0033] The bottom end of the second connecting pipe 10 is fixedly installed with the top end of the three-way pipe 11. The right side of the processing box 3 is fixed with a fourth connecting pipe 22, and the right side of the fourth connecting pipe 22 penetrates through the inside of the right side of the device box body 2. The right side of the device box body 2 is fixedly installed with an exhaust fan 23. The first air delivery pipe 4 and the fourth connecting pipe 22 are respectively communicated with the inside of the processing box 3. The four corners at the bottom end of the device box body 2 are respectively fixed with support legs 1, and the front end of the device box body 2 is fixedly installed with a cover body 34.

[0034] Working principle: When the utility model is in use, after the intake pipe 8 is connected to the exhaust gas outlet of the production equipment, when the exhaust gas is introduced into the device for treatment, a plug-in frame 25 is inserted and installed inside the connection box 9. Some particulate impurities contained in the exhaust gas can be preliminarily filtered and removed by the filter screen 26 arranged inside the plug-in frame 25. Cooperating with the subsequent purification and filtration treatment, the exhaust gas can be subjected to multi-stage filtration treatment. When treating the exhaust gas with heat, the third valve 12 and the first valve 6 can be opened, and at the same time, the second valve 7 is closed to seal the inside of the first air pipe 4. After the hot exhaust gas passes through the intake pipe 8 and the second connecting pipe 10 and is introduced into the three-way pipe 11, it can then pass through the second air pipe 13 and be introduced into the cooling pipe 16. The spiral-structured cooling pipe 16 can assist in cooling down the exhaust gas. By controlling the blower 18 to start and blow air to cool down the cooling pipe 16, the cooling rate is accelerated. After the exhaust gas cools down inside the cooling pipe 16, it can be introduced into the first air pipe 4 through the third connecting pipe 19 and the first connecting pipe 5, and then be introduced into the treatment box 3 through the first air pipe 4 for purification treatment, which can reduce the exhaust gas temperature and improve the exhaust gas treatment effect. When treating some normal-temperature exhaust gas, by closing the first valve 6 and the third valve 12 and opening the second valve 7, normal exhaust gas purification treatment can be carried out, and the state can be flexibly switched. After the exhaust gas is purified, it is discharged through the fourth connecting pipe 22 and the exhaust fan 23. When replacing the activated carbon filter element 21 inside the treatment box 3, first remove the cover body 34 from the front end of the device box body 2, and then by respectively screwing out the two groups of locking rods 28 from the threaded holes 29, the box cover 27 can be unlocked at the front end of the treatment box 3. Then, turn the box cover 27 forward to open it. After the compression spring 31 loses the thrust, it will rebound and use the push plate 32 to push the inner frame 20 forward out of the treatment box 3. After the inner frame 20 is pushed out of the treatment box 3, the purification treatment medium inside the device can be conveniently replaced.

[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An exhaust gas treatment device for the production of a soil remediation agent, comprising a device box body (2), characterized in that: On the left side of the top of the device box body (2), an air inlet pipe (8) is provided, and a connection box (9) is fixed on the right side of the air inlet pipe (8). A second connecting pipe (10) is fixed on the right side of the connection box (9), and a tee pipe (11) is provided at the bottom end of the second connecting pipe (10). A first air delivery pipe (4) is provided on the left side of the device box body (2). A treatment box (3) is fixed inside the device box body (2). An exhaust gas cooling mechanism is provided at the top of the device box body (2) for assisting in cooling and cooling the discharged hot exhaust gas. The exhaust gas cooling mechanism includes a first connecting pipe (5), a first valve (6), a second valve (7), a third valve (12), a second air delivery pipe (13), an air outlet groove (14), a housing (15), a cooling pipe (16), a drain port (17), a blower (18) and a third connecting pipe (19). The housing (15) is installed and fixed at the bottom end of the device box body (2), and the cooling pipe (16) is fixed inside the housing (15). The drain port (17) is fixed on the right side of the bottom end of the housing (15). The second air delivery pipe (13) is fixed on the right side of the housing (15), and the third valve (12) is fixed at the top end of the second air delivery pipe (13). The second valve (7) is fixed at the top end of the first air delivery pipe (4). The third connecting pipe (19) is fixed on the left side of the housing (15), and the first valve (6) is fixed at the bottom end of the third connecting pipe (19). The right side of the first air delivery pipe (4) penetrates through the inside of the left side of the device box body (2) and is fixedly connected between the left side of the treatment box (3). The first connecting pipe (5) is installed and fixed at the bottom end of the first valve (6). The blower (18) is installed and fixed at the bottom end of the housing (15). An air outlet groove (14) is opened inside the top end of the housing (15).

2. The waste gas treatment device for the production of a soil remediation agent according to claim 1, characterized in that: The top end of the second valve (7) is installed and fixed between the left side of the bottom end of the tee pipe (11). The top end of the third valve (12) is installed and fixed between the right side of the bottom end of the tee pipe (11). The bottom end of the first connecting pipe (5) penetrates through the inside of the left side of the top end of the device box body (2) and is fixedly connected between the top end of the first air delivery pipe (4).

3. The waste gas treatment device for the production of a soil remediation agent according to claim 1, characterized in that: The second air delivery pipe (13) and the third connecting pipe (19) are respectively communicated with the inside of the cooling pipe (16). The cooling pipe (16) is arranged in a spiral structure inside the housing (15). The air outlet groove (14) penetrates through the inside of the top end of the housing (15). A plurality of groups of the air outlet grooves (14) are equidistantly opened inside the top end of the housing (15). The blower (18) is communicated with the inside of the housing (15).

4. An exhaust gas treatment device for the production of a soil remediation agent according to claim 1, characterized in that: A slot (24) is provided inside the connection box (9), and the front end of the slot (24) penetrates through the inside of the front end of the connection box (9). A plug rack (25) is inserted inside the slot (24), and a filter screen (26) is fixed inside the plug rack (25). A handle is fixed at the front end of the plug rack (25). The air inlet pipe (8) is communicated with the inside of the second connecting pipe (10) through the connection box (9).

5. The waste gas treatment device for the production of a soil remediation agent according to claim 4, characterized in that: The plug-in rack (25) is internally connected and communicated with the connection box (9).

6. The waste gas treatment device for the production of a soil remediation agent according to claim 1, characterized in that: An inner frame (20) is arranged inside the processing box (3), and three groups of activated carbon filters (21) are fixed inside the inner frame (20). A fixing cover (30) is vertically installed and fixed at the rear end of the processing box (3), and compression springs (31) are respectively fixed at the top and bottom of the inner rear end of the fixing cover (30). A through groove (33) is formed inside the rear end of the processing box (3), and a push plate (32) is vertically arranged inside the through groove (33). The front end of the compression spring (31) is fixedly connected to the rear end of the push plate (32).

7. An exhaust gas treatment device for the production of a soil remediation agent according to claim 1, characterized in that: A box cover (27) is hingedly installed at the front end of the processing box (3), and lock rods (28) are respectively arranged through both sides of the top of the front end of the box cover (27). Threaded holes (29) for mating installation with the lock rods (28) are respectively formed on both sides of the top of the front end of the processing box (3). External threads are provided on the outer part of the lock rods (28).

8. An exhaust gas treatment device for the production of a soil remediation agent according to claim 1, characterized in that: The bottom end of the second connecting pipe (10) is fixedly installed with the top end of the three-way pipe (11). A fourth connecting pipe (22) is fixed on the right side of the processing box (3), and the right side of the fourth connecting pipe (22) penetrates through the inside of the right side of the device box body (2). An exhaust fan (23) is fixedly installed on the right side of the device box body (2). The first air delivery pipe (4) and the fourth connecting pipe (22) are respectively internally connected and communicated with the processing box (3). Support legs (1) are respectively fixed at the four corners of the bottom end of the device box body (2). A cover body (34) is fixedly installed at the front end of the device box body (2).

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