Multi-stage treatment recovery tower for waste gas

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a multistage treatment recovery tower for waste gas, which comprises a bottom plate, a treatment cylinder fixed with the bottom plate through a plurality of supporting legs is arranged above the bottom plate, a gas inlet pipe communicated with an inner cavity of the treatment cylinder is fixed on the outer wall of the treatment cylinder close to the bottom end, and a filter screen is mounted on the left side surface of the gas inlet pipe. A spraying mechanism for spraying waste gas entering the treatment cylinder is arranged on the top surface of the treatment cylinder, and the cleaning mechanism is arranged on the top surface of the bottom plate. The supply pipe of the external chemical treatment liquid supply device is tightly sleeved with the liquid inlet end of the pump body, and waste gas entering the treatment barrel can be filtered and sprayed by arranging the treatment barrel, the gas inlet pipe, the filter screen and the spraying mechanism; and through the design of the cleaning mechanism, the inner side wall and the inner bottom wall of the treatment barrel can be cleaned, manual cleaning work of the inner wall of the treatment barrel is not needed, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a multi-stage treatment and recovery tower for waste gas. Background Art

[0002] A boiler is an energy conversion device. The energy input to the boiler includes chemical energy and electrical energy in the fuel. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The boiler will produce flue gas during operation. If the flue gas is directly discharged into the atmosphere, it will cause serious air pollution. Therefore, the boiler flue gas needs to be treated. In the process of flue gas treatment, a waste gas treatment recovery tower is needed.

[0003] The patent with publication number CN218608679U discloses a spray tower for exhaust gas absorption, including a water circulation mechanism and an air purification mechanism. The water circulation mechanism is located below the air purification mechanism. The water circulation mechanism includes a water storage tower and an air intake tower located above the water storage tower. The water storage tower and the air intake tower are connected. The air purification mechanism includes a buffer tower, a spray tower and a purification tower. The buffer tower, the spray tower and the purification tower are stacked on the air intake tower from bottom to top in sequence, and a purification mechanism is arranged on the top of the air intake tower.

[0004] Although the air purification mechanism in the device can buffer and spray the exhaust gas transmitted in the air intake tower, and can also remove impurities contained in the exhaust gas after spraying by physical adsorption, so that the purified exhaust gas can be discharged from the exhaust pipe, thereby completing the exhaust gas purification work, thereby reducing or eliminating harmful substances in the exhaust gas, avoiding exhaust gas pollution of the external environment, and effectively improving the exhaust gas purification effect, but the device does not have a structure for cleaning the inner wall of the spray tower, so it is not convenient to clean the impurities attached to the inner wall of the spray tower, and it needs to be cleaned manually, which is time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-stage treatment recovery tower for waste gas, so as to solve the problem that the device proposed in the above-mentioned background technology has no structure for cleaning the inner wall of the spray tower, making it inconvenient to clean the impurities attached to the inner wall of the spray tower, and requires manual cleaning, which is time-consuming and laborious.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A multi-stage waste gas treatment and recovery tower, comprising a bottom plate, a treatment cylinder fixed to the bottom plate by a plurality of supporting legs, an air inlet pipe connected to the inner cavity of the treatment cylinder is fixed to the outer wall of the treatment cylinder near the bottom end, a filter screen is installed on the left surface of the air inlet pipe, a spray mechanism for spraying the waste gas entering the treatment cylinder is provided on the top surface of the treatment cylinder, and further comprising:

[0008] The cleaning mechanism is arranged on the top surface of the bottom plate and is used for cleaning the inner wall of the treatment cylinder. The cleaning mechanism includes an L-shaped vertical plate fixed on the top surface of the bottom plate, a rotating column rotatably connected to the horizontal plate end of the vertical plate, a rotating roller coaxially fixed to the bottom end of the rotating column and rotatably connected to the treatment cylinder, a cylindrical cam coaxially fixed to the circumferential outer wall of the rotating column, a rotating rod coaxially fixed to the top surface of the rotating column, two gears located above the vertical plate and used for driving the rotating rod to rotate, a motor installed on the top surface of the horizontal plate end of the vertical plate and used for driving the two gears to rotate, a moving rod slidably connected to the front side surface of the vertical plate end of the vertical plate, two connecting rods in an L-shaped shape respectively fixed to the left and right side surfaces of the moving rod, and a connecting rod fixed to the bottom of the vertical rod end of the same side. The two gears are meshed with each other, and a spiral groove is provided on the circumferential outer wall of the cylindrical cam. A sliding column slidably connected to the sliding groove on the outer wall of the cylindrical cam is fixed on the front side surface of the moving rod. The roller penetrates the top surface of the processing cylinder and extends to the inside of the processing cylinder near the bottom end. The fixed rod penetrates the top surface of the processing cylinder and extends to the inside of the processing cylinder near the top end. A moving ring is fixed on the bottom surface of the two fixed rods, and a brush ring for cleaning the inner wall of the processing cylinder is fixed on the circumferential outer wall of the moving ring. Two rotating plates are fixed near the bottom end of the circumferential outer wall of the roller, and a brush plate for cleaning the inner bottom wall of the processing cylinder is fixed to the bottom end of the rotating plate.

[0009] As a preferred embodiment, the cleaning mechanism further comprises a rotating shaft coaxially connected to the output shaft of the motor, and the two gears are coaxially fixed on the circumferential outer walls of the rotating shaft and the rotating rod respectively.

[0010] As a preferred embodiment, a guide groove is provided on the front surface of the vertical plate end of the vertical plate, and a guide block slidably connected to the guide groove on the front surface of the vertical plate end of the vertical plate is fixed on the rear surface of the moving rod.

[0011] As a preferred embodiment, the circumferential outer wall of the brush ring is tightly fitted with the inner wall of the treatment barrel, and the side surface of the brush plate close to the inner bottom wall of the treatment barrel is tightly fitted with the inner bottom wall of the treatment barrel.

[0012] As a preferred embodiment, an air outlet pipe connected to the inner cavity of the treatment cylinder is fixed on the top surface of the treatment cylinder, a discharge pipe connected to the inner cavity of the treatment cylinder is fixed at the bottom end of the treatment cylinder, valves are installed on the outer walls of the air outlet pipe, the discharge pipe and the air inlet pipe, and the spray mechanism includes a pump body installed on the top surface of the treatment cylinder, a liquid outlet end of the pump body is fixed with an L-shaped liquid through pipe connected to the pump body, the vertical pipe end of the liquid through pipe passes through the top surface of the treatment cylinder and extends to the inside of the treatment cylinder near the top, and an atomizing nozzle connected to the inner cavity of the treatment cylinder is fixed on the bottom surface of the vertical pipe end of the liquid through pipe.

[0013] As a preferred embodiment, an anti-skid plate matching its shape is fixed to the bottom end of the base plate, and the thickness of the anti-skid plate is 3-8 cm.

[0014] As a preferred embodiment, the cleaning mechanism further comprises a protection box fixed on the top surface of the vertical plate and the horizontal plate end, the motor is located inside the protection box, and the rotating shaft passes through the top surface of the protection box.

[0015] As a preferred embodiment, the transverse cross-sectional shape of the guide groove on the front side surface of the vertical plate end of the vertical board is convex, and the shape of the guide block is convex to match the shape of the guide groove on the front side surface of the vertical plate end of the vertical board.

[0016] As a preferred embodiment, the air outlet pipe, discharge pipe, air inlet pipe, roller and two fixed rods are all provided with sealing rings at the contact parts with the treatment cylinder, and the liquid passage pipe is also provided with sealing rings at the contact parts with the atomizing nozzle, pump body and treatment cylinder.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model tightly sleeves the supply pipe of the external chemical treatment liquid supply device with the liquid inlet end of the pump body, and can filter and spray the waste gas entering the treatment cylinder by arranging the treatment cylinder, the air inlet pipe, the filter screen and the spray mechanism. The sediment attached to the inner side wall and the inner bottom wall of the treatment cylinder can be cleaned by the design of the cleaning mechanism, and there is no need to manually clean the inner wall of the treatment cylinder, which saves time and effort;

[0019] 2. In the utility model, a guide groove is provided on the front surface of the vertical plate end of the upright plate, and a guide block is fixed on the rear surface of the moving rod, which is slidably connected to the guide groove on the front surface of the vertical plate end of the upright plate, so as to guide the movement of the moving rod and the two connecting rods, and further indirectly guide the movement of the moving ring and the brush ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the overall structural diagrams of the utility model;

[0021] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0022] Figure 3 This is one of the schematic diagrams of the internal structure of the treatment cylinder in the utility model;

[0023] Figure 4 This is the second schematic diagram of the internal structure of the processing cylinder in the utility model;

[0024] Figure 5 It is a partial exploded view of the utility model;

[0025] Figure 6 It is an exploded view of the spray mechanism in the utility model;

[0026] Figure 7 It is a schematic diagram of the overall structure of the cleaning mechanism in the utility model;

[0027] Figure 8 This is one of the partial exploded views of the cleaning mechanism in the utility model;

[0028] Fig. 9 This is the second partial exploded view of the cleaning mechanism in the utility model;

[0029] Fig.10 This is the third partial exploded view of the cleaning mechanism in the utility model;

[0030] Fig.11 This is the fourth partial exploded view of the cleaning mechanism in the utility model.

[0031] The meaning of each number in the figure is:

[0032] 1. Bottom plate; 2. Processing cylinder; 3. Support legs; 4. Exhaust pipe; 5. Discharge pipe; 6. Inlet pipe; 7. Cleaning mechanism; 71. Vertical plate; 72. Rotating column; 73. Rotating roller; 74. Cylindrical cam; 75. Rotating plate; 76. Brush plate; 77. Rotating rod; 78. Gear; 79. Motor; 710. Rotating shaft; 711. Protective box; 712. Moving rod; 713. Sliding column; 714. Connecting rod; 715. Fixed rod; 716. Moving ring; 717. Brush ring; 718. Guide block; 8. Valve; 9. Spraying mechanism; 91. Pump body; 92. Liquid pipe; 93. Atomizing nozzle; 10. Filter; 11. Anti-skid plate. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-Figure 11 The utility model provides a technical solution: a multi-stage treatment and recovery tower for waste gas, comprising a bottom plate 1, a treatment tube 2 fixed to the bottom plate 1 by a plurality of supporting legs 3 is arranged above the bottom plate 1, an air intake pipe 6 connected to the inner cavity of the treatment tube 2 is fixed near the bottom end of the outer wall of the treatment tube 2, a filter screen 10 is installed on the left surface of the air intake pipe 6, a spray mechanism 9 for spraying the waste gas entering the treatment tube 2 is arranged on the top surface of the treatment tube 2, and further comprising:

[0035] The cleaning mechanism 7 is arranged on the top surface of the bottom plate 1 and is used to clean the inner wall of the treatment cylinder 2. The cleaning mechanism 7 includes an L-shaped vertical plate 71 fixed on the top surface of the bottom plate 1, a rotating column 72 rotatably connected to the horizontal plate end of the vertical plate 71, a rotating roller 73 coaxially fixed to the bottom end of the rotating column 72 and rotatably connected to the treatment cylinder 2, a cylindrical cam 74 coaxially fixed on the circumferential outer wall of the rotating column 72, a rotating rod 77 coaxially fixed on the top surface of the rotating column 72, and a rotating rod 77 located above the vertical plate 71 and used to drive the rotating rod 77. Two gears 78 for rotation, a motor 79 installed on the top surface of the horizontal plate end of the vertical plate 71 and used to drive the two gears 78 to rotate, a moving rod 712 slidably connected to the front surface of the vertical plate end of the vertical plate 71, two connecting rods 714 fixed to the left and right side surfaces of the moving rod 712 and in an L-shaped shape, and two fixed rods 715 fixed to the bottom surface of the vertical rod end of the same side connecting rod 714 and slidably plugged with the processing cylinder 2, the two gears 78 are meshed with each other, and the circumferential outer wall of the cylindrical cam 74 A spiral slide groove is provided on the top, a slide column 713 slidably connected to the slide groove on the outer wall of the cylindrical cam 74 is fixed on the front side surface of the moving rod 712, the roller 73 penetrates the top surface of the processing cylinder 2 and extends to the inside of the processing cylinder 2 near the bottom end, the fixed rod 715 penetrates the top surface of the processing cylinder 2 and extends to the inside of the processing cylinder 2 near the top end, the bottom surfaces of the two fixed rods 715 are fixed with a moving ring 716, and the outer circumferential wall of the moving ring 716 is fixed with a brush ring 717 for cleaning the inner wall of the processing cylinder 2 Two rotating plates 75 are fixed to the circumferential outer wall of the roller 73 near the bottom end, and a brush plate 76 for cleaning the inner bottom wall of the treatment cylinder 2 is fixed to the bottom end of the rotating plate 75. By arranging the treatment cylinder 2, the air inlet pipe 6, the filter screen 10 and the spray mechanism 9, the exhaust gas entering the treatment cylinder 2 can be filtered and sprayed. The inner side wall and the inner bottom wall of the treatment cylinder 2 can be cleaned by the design of the cleaning mechanism 7, and there is no need to manually clean the inner wall of the treatment cylinder 2, which saves time and effort.

[0036] In this embodiment, the cleaning mechanism 7 also includes a rotating shaft 710 coaxially connected to the output shaft of the motor 79, and two gears 78 are coaxially fixed on the circumferential outer walls of the rotating shaft 710 and the rotating rod 77, respectively, which can smoothly drive the two gears 78 to rotate, and then smoothly drive the rotating column 72 and the rotating roller 73 to rotate.

[0037] In addition, a guide groove is provided on the front side surface of the vertical plate end of the vertical plate 71, and a guide block 718 is fixed on the rear side surface of the moving rod 712, which is slidably connected to the guide groove on the front side surface of the vertical plate end of the vertical plate 71, so as to guide the movement of the moving rod 712 and the two connecting rods 714, and further indirectly guide the movement of the moving ring 716 and the brush ring 717.

[0038] Furthermore, the circumferential outer wall of the brush ring 717 fits tightly against the inner wall of the processing cylinder 2, and the side surface of the brush plate 76 close to the inner bottom wall of the processing cylinder 2 fits tightly against the inner bottom wall of the processing cylinder 2, so that the brush ring 717 can smoothly clean the inner wall of the processing cylinder 2, and the brush plate 76 can smoothly clean the inner bottom wall of the processing cylinder 2.

[0039] Specifically, an air outlet pipe 4 connected to its inner cavity is fixed on the top surface of the treatment cylinder 2, and a discharge pipe 5 connected to its inner cavity is fixed at the bottom end of the treatment cylinder 2. Valves 8 are installed on the outer walls of the air outlet pipe 4, the discharge pipe 5 and the air inlet pipe 6. The spray mechanism 9 includes a pump body 91 installed on the top surface of the treatment cylinder 2, and a liquid through pipe 92 connected to it and in an L-shaped shape is fixed to the liquid outlet end of the pump body 91. The vertical pipe end of the liquid through pipe 92 passes through the top surface of the treatment cylinder 2 and extends to the inside of the treatment cylinder 2 near the top, and an atomizing nozzle 93 connected to its inner cavity is fixed on the bottom surface of the vertical pipe end of the liquid through pipe 92, which can smoothly collect the treated waste gas in the treatment cylinder 2 and facilitate the discharge of the precipitate generated by the spraying. The supply pipe of the external chemical treatment liquid supply device is tightly connected to the liquid inlet end of the pump body 91, so that the waste gas entering the treatment cylinder 2 can be smoothly sprayed.

[0040] More specifically, an anti-skid plate 11 matching its shape is fixed to the bottom end of the base plate 1, and the thickness of the anti-skid plate 11 is 3-8 cm, preferably 7 cm in this article, so that the friction between the entire device and the ground is greater, thereby making the entire device more stable during operation.

[0041] It is worth noting that the cleaning mechanism 7 also includes a protection box 711 fixed on the top surface of the horizontal plate end of the vertical plate 71. The motor 79 is located inside the protection box 711, and the rotating shaft 710 passes through the top surface of the protection box 711, which can protect the motor 79 and thus extend the service life of the motor 79.

[0042] It is worth mentioning that the transverse cross-sectional shape of the guide groove on the front side surface of the vertical plate end of the vertical plate 71 is convex, and the shape of the guide block 718 is convex to match the shape of the guide groove on the front side surface of the vertical plate end of the vertical plate 71, which can make the connection between the guide block 718 and the guide groove on the front side surface of the vertical plate end of the vertical plate 71 tighter, and indirectly make the movable ring 716 and the brush ring 717 more stable during the movement.

[0043] It is worth emphasizing that the parts where the air outlet pipe 4, the discharge pipe 5, the air inlet pipe 6, the roller 73 and the two fixed rods 715 are in contact with the processing cylinder 2 are all provided with sealing rings, and the parts where the liquid passing pipe 92 is in contact with the atomizing nozzle 93, the pump body 91 and the processing cylinder 2 are also provided with sealing rings, which can make the sealing of the entire device better and prevent the occurrence of air leakage and liquid leakage.

[0044] Finally, it should be noted that the motor 79, pump body 91 and other components involved in the utility model are all universal standard parts or components known to technical personnel in this field, and their structures and principles are all known to technical personnel through technical manuals or through conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and compatible controllers and power supplies, are connected through wires. The specific connection means should refer to the working principle of the utility model. The electrical connection between each electrical component is completed in a sequential working order, and the detailed connection means are all well-known technologies in the field.

[0045] In the specific use of this embodiment, when it is necessary to treat the waste gas, firstly, the supply pipe of the external chemical treatment liquid supply device is tightly connected with the liquid inlet end of the pump body 91, and then the collection pipe of the external waste gas collection device is tightly connected with the outlet pipe 4, and at the same time, the valve 8 on the outer wall of the outlet pipe 4 and the inlet pipe 6 is opened, and then the external exhaust pipe is tightly connected with the inlet pipe 6 and the pump body 91 is started. After the pump body 91 is started, the treatment liquid in the external chemical treatment liquid supply device is transported from its supply pipe to the inside of the liquid pipe 92, and the chemical treatment liquid entering the inside of the liquid pipe 92 then enters the atomizing nozzle 93 and is sprayed out in the form of mist by the atomizing nozzle 93. At the same time, the external The furnace generates waste gas when it is working. The waste gas enters the air inlet pipe 6 from the external exhaust pipe. The waste gas is filtered when passing through the filter 10. The waste gas entering the air inlet pipe 6 then enters the treatment tube 2. The waste gas entering the treatment tube 2 diffuses from bottom to top. During the diffusion process, the waste gas can fully contact with the chemical treatment liquid, and then the waste gas can be treated. The treated waste gas then enters the external waste gas collection device from the air outlet pipe 4. After the treatment contact, the pump body 91 is closed by the external PLC, and then the collection pipe of the external waste collection device is tightly connected with the discharge pipe 5. By opening the valve 8 on the outer wall of the discharge pipe 5, the sediment inside the treatment tube 2 can be discharged;

[0046] When the inner wall of the treatment tube 2 needs to be cleaned, the valve 8 on the outer wall of the air outlet pipe 4 is first opened and an appropriate amount of clean water is added to the inside of the treatment tube 2 through the air outlet pipe 4. Then, the motor 79 is started by the external PLC. The output shaft of the motor 79 rotates to drive the rotating shaft 710 coaxially connected thereto to rotate. The rotating shaft 710 rotates to drive the gear 78 coaxially fixed thereto on the same side to rotate. The rotation of the gear 78 drives another gear 78 meshing therewith to rotate. The rotation of the other gear 78 drives the rotating rod 7 coaxially fixed thereto. 7 rotates, the rotating rod 77 rotates to drive the rotating column 72 fixed coaxially therewith to rotate, the rotating column 72 rotates to drive the cylindrical cam 74 and the roller 73 fixed coaxially therewith to rotate, the roller 73 rotates to indirectly drive the two brush plates 76 to rotate, the two brush plates 76 rotate to clean the inner bottom wall of the processing cylinder 2, the cylindrical cam 74 rotates to drive the sliding groove on its circumferential outer wall to rotate, the cylindrical cam 74 rotates to drive the sliding column 713 slidably connected to the sliding groove on its outer wall to move, and the sliding column 713 moves on the moving rod 712 , guide block 718 and the guide groove on the front side surface of the vertical plate end of the vertical plate 71, the connecting rod 714 moves to drive the two connecting rods 714 fixed thereto to move, the connecting rod 714 moves to drive the fixed rod 715 fixed thereto to move, the fixed rod 715 moves to drive the moving ring 716 fixed thereto to move, the moving ring 716 moves to drive the brush ring 717 fixed thereto to move, because the slide groove on the outer wall of the cylindrical cam 74 is spiral, the cylindrical cam 74 can make the slide column 713 do a linear reciprocating motion in the vertical direction during the rotation process, and then can indirectly make the brush ring 717 do a linear reciprocating motion inside the processing tube 2, and the brush ring 717 can clean the inner wall of the processing tube 2 during the linear reciprocating motion inside the processing tube 2. After cleaning for a period of time, the motor 79 is turned off by the external PLC, and then the collection pipe of the external waste liquid collection device is tightly connected with the discharge pipe 5, and the valve 8 on the outer wall of the discharge pipe 5 is opened to discharge the waste liquid inside the processing tube 2.

[0047] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-stage waste gas treatment and recovery tower, comprising a bottom plate (1), characterized in that: A treatment cylinder (2) is provided above the bottom plate (1) and is fixed thereto via a plurality of supporting legs (3); an air intake pipe (6) connected to the inner cavity of the treatment cylinder (2) is fixed to the outer wall of the treatment cylinder (2) near the bottom end; a filter screen (10) is installed on the left surface of the air intake pipe (6); a spray mechanism (9) for spraying the waste gas entering the treatment cylinder (2) is provided on the top surface of the treatment cylinder (2); and the treatment cylinder (2) further comprises: The cleaning mechanism (7) is arranged on the top surface of the bottom plate (1) and is used for cleaning the inner wall of the processing cylinder (2). The cleaning mechanism (7) comprises a vertical plate (71) fixed on the top surface of the bottom plate (1) and having an L-shaped shape, a rotating column (72) rotatably connected to the horizontal plate end of the vertical plate (71), a rotating roller (73) coaxially fixed to the bottom end of the rotating column (72) and rotatably connected to the processing cylinder (2), a cylindrical cam (74) coaxially fixed on the circumferential outer wall of the rotating column (72), and a rotating roller (73) coaxially fixed to the rotating column (72). ), a rotating rod (77) on the top surface of the vertical plate (71), two gears (78) located above the vertical plate (71) and used to drive the rotating rod (77) to rotate, a motor (79) installed on the top surface of the horizontal plate end of the vertical plate (71) and used to drive the two gears (78) to rotate, a moving rod (712) slidably connected to the front side surface of the vertical plate end of the vertical plate (71), two connecting rods (714) fixed to the left and right side surfaces of the moving rod (712) and in an L-shaped shape, and a connecting rod (714) fixed to the same side ) are provided on the bottom surface of the vertical rod end and are slidably plugged into the processing cylinder (2), the two gears (78) are meshed with each other, a spiral groove is provided on the circumferential outer wall of the cylindrical cam (74), a sliding column (713) is fixed on the front side surface of the moving rod (712) and is slidably connected to the groove on the outer wall of the cylindrical cam (74), the rotating roller (73) passes through the top surface of the processing cylinder (2) and extends to the inside of the processing cylinder (2) near the bottom end, and the fixed rod (715) passes through The top surface of the treatment cylinder (2) extends to the inside of the treatment cylinder (2) near the top, and a movable ring (716) is fixed on the bottom surface of the two fixed rods (715), and a brush ring (717) for cleaning the inner wall of the treatment cylinder (2) is fixed on the circumferential outer wall of the movable ring (716), and two rotating plates (75) are fixed on the circumferential outer wall of the roller (73) near the bottom end, and a brush plate (76) for cleaning the inner bottom wall of the treatment cylinder (2) is fixed at the bottom end of the rotating plate (75).

2. The multi-stage waste gas treatment recovery tower according to claim 1 is characterized in that: The cleaning mechanism (7) further comprises a rotating shaft (710) coaxially connected to the output shaft of the motor (79), and the two gears (78) are coaxially fixed on the rotating shaft (710) and the circumferential outer wall of the rotating rod (77), respectively.

3. The multi-stage waste gas treatment recovery tower according to claim 1 is characterized in that: A guide groove is provided on the front side surface of the vertical plate end of the vertical plate (71), and a guide block (718) is fixed on the rear side surface of the moving rod (712) and is slidably connected to the guide groove on the front side surface of the vertical plate end of the vertical plate (71).

4. The multi-stage waste gas treatment recovery tower according to claim 1 is characterized in that: The circumferential outer wall of the brush ring (717) is tightly fitted with the inner wall of the treatment cylinder (2), and the side surface of the brush plate (76) close to the inner bottom wall of the treatment cylinder (2) is tightly fitted with the inner bottom wall of the treatment cylinder (2).

5. The multi-stage waste gas treatment recovery tower according to claim 1 is characterized in that: An air outlet pipe (4) connected to the inner cavity of the treatment cylinder (2) is fixed on the top surface, and a discharge pipe (5) connected to the inner cavity of the treatment cylinder (2) is fixed on the bottom end. Valves (8) are installed on the outer walls of the air outlet pipe (4), the discharge pipe (5) and the air inlet pipe (6). The spray mechanism (9) comprises a pump body (91) installed on the top surface of the treatment cylinder (2). A liquid outlet end of the pump body (91) is fixed with an L-shaped liquid passage pipe (92) connected to the treatment cylinder (2). The vertical pipe end of the liquid passage pipe (92) penetrates the top surface of the treatment cylinder (2) and extends to the inside of the treatment cylinder (2) near the top. An atomizing nozzle (93) connected to the inner cavity of the treatment cylinder (2) is fixed on the bottom surface of the vertical pipe end of the liquid passage pipe (92).

6. The multi-stage waste gas treatment recovery tower according to claim 1 is characterized in that: An anti-skid plate (11) matching the shape of the bottom plate (1) is fixed to the bottom end of the bottom plate (1), and the thickness of the anti-skid plate (11) is 3-8 cm.

7. The multi-stage waste gas treatment recovery tower according to claim 2 is characterized in that: The cleaning mechanism (7) further comprises a protection box (711) fixed on the top surface of the horizontal plate end of the vertical plate (71), the motor (79) is located inside the protection box (711), and the rotating shaft (710) passes through the top surface of the protection box (711).

8. The multi-stage waste gas treatment recovery tower according to claim 3 is characterized in that: The transverse cross-sectional shape of the guide groove on the front side surface of the vertical plate end of the vertical plate (71) is in a convex shape, and the shape of the guide block (718) is in a convex shape that matches the shape of the guide groove on the front side surface of the vertical plate end of the vertical plate (71).

9. The multi-stage waste gas treatment recovery tower according to claim 5, characterized in that: The parts where the air outlet pipe (4), the discharge pipe (5), the air inlet pipe (6), the rotating roller (73) and the two fixing rods (715) contact the processing cylinder (2) are all provided with sealing rings, and the parts where the liquid passage pipe (92) contacts the atomizing nozzle (93), the pump body (91) and the processing cylinder (2) are also provided with sealing rings.

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