Coating production waste gas treatment process and equipment

Abstract

The invention relates to the technical field of chemical engineering and environmental protection. The invention aims to provide a coating production waste gas treatment process. The process comprises the following steps: A, waste gas collection; b, pretreatment; c, pressurizing and concentrating; d, condensation separation; e, drying treatment; f, activated carbon adsorption. Before activated carbon adsorption, by pressurizing the waste gas, the concentration of harmful substances in the waste gas can be greatly increased, and subsequent operations such as condensation, drying and activated carbon adsorption are facilitated. And the pressurization multiple is controlled to be about 3-5 times, so that the follow-up treatment efficiency is ensured, and meanwhile, the power consumption waste caused by excessive pressurization can be avoided. The waste gas compressor adopted by the invention adopts swing type compression, has the characteristics of compact and exquisite structure, low power consumption, strong working continuity and the like, and provides a brand new treatment mode for waste gas treatment in coating production.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical industry and environmental protection, and in particular to a process and equipment for treating waste gas from coating production. Background Art

[0002] Polyacrylate emulsion paints are based on polyacrylate emulsions. They offer advantages such as weather resistance, water resistance, and excellent acid and alkali resistance. They are easy to apply and dry to form a film at room temperature. The resulting films are high-gloss and vibrant in color, and they are non-toxic and pollution-free, making them environmentally friendly. They are widely used for the decoration and protection of building walls, wood, metal, and other surfaces. The production process for polyacrylate emulsion paints involves emulsifying the raw materials, reacting the emulsified emulsion with an initiator in a reactor for polymerization, and then undergoing subsequent processing steps such as filtration, dispersion stirring, sand milling, and secondary filtration.

[0003] At present, most of the existing polyacrylate emulsion coatings are water-based coatings that use pure water as a solvent. Their overall hazards are relatively low, but due to the addition of various additives such as initiators and surfactants, they will inevitably introduce some volatile organic solvents. Therefore, they will still produce a small amount of harmful waste gas during the steps of coating emulsification, polymerization reaction, dispersion and stirring. In the existing technology, activated carbon adsorption devices are usually used to directly physically adsorb harmful waste gases and then discharge them. However, since the overall content of harmful substances in these waste gases is not high but the emission volume is large, the adsorption efficiency is poor during the process of activated carbon adsorption. Although some solutions enhance the adsorption efficiency of activated carbon by installing a zeolite wheel in front of the activated carbon adsorption device and using the adsorption and desorption of the zeolite wheel to increase the concentration of harmful gases, the overall cost is high and the floor space is large, which is a heavy burden on enterprises. Summary of the Invention

[0004] The purpose of the present invention is to provide a coating production waste gas treatment process and equipment that can reduce power consumption and compress to improve the efficiency of waste gas purification.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a coating production waste gas treatment process, comprising the following steps:

[0006] A. Waste gas collection: Collect waste gas from the paint production process;

[0007] B. Pretreatment: Use bag filters to dry filter the exhaust gas to remove solid particles in the exhaust gas;

[0008] C. Pressurization and concentration: compress the exhaust gas to increase the concentration of harmful gases in the exhaust gas; the exhaust gas pressure after compression is 0.3-0.5MPa;

[0009] D. Condensation separation: The pressurized exhaust gas is condensed and the condensation temperature is controlled at 20-30°C to remove high-boiling point components in the exhaust gas;

[0010] E. Drying treatment: The exhaust gas is dried by silica gel adsorption. After treatment, the relative humidity RH of the exhaust gas is controlled below 40%;

[0011] F. Activated carbon adsorption: The dried waste gas is adsorbed by activated carbon.

[0012] Preferably, the exhaust gas treatment equipment includes an exhaust gas compressor, and a condensation tank, a silica gel drying tank and an activated carbon adsorption tank which are arranged above the exhaust gas compressor and are connected in sequence.

[0013] Preferably, the exhaust gas compressor includes a disc-shaped compression chamber and an exhaust gas temporary storage chamber arranged above the compression chamber;

[0014] Two fan-shaped transition chambers are symmetrically arranged in the compression chamber, and the transition chambers are connected to the exhaust gas temporary storage chamber at the top; a compression chamber is formed between the two transition chambers; a compression air inlet is arranged on the outer wall of the compression chamber close to the transition chamber, and a one-way valve for one-way conduction from outside to inside is arranged at the compression air inlet; a compression air outlet is arranged on the side wall of the transition chamber adjacent to the compression chamber, and a pressure-limiting valve for one-way conduction from the compression chamber to the transition chamber is arranged at the compression air outlet;

[0015] A rotating compression paddle is provided at the center of the compression chamber, and the rotating compression paddle swings back and forth in the compression cavity under the drive of the driving mechanism.

[0016] Preferably, a main shaft is provided at the center of the compression chamber, and the main shaft is connected to the driving mechanism; the rotary compression paddle includes a shaft sleeve fixedly mounted on the outside of the main shaft, and a paddle body extending radially along the compression chamber.

[0017] Preferably, the driving mechanism includes an upper bevel gear and a lower bevel gear symmetrically arranged at the lower section of the main shaft, and also includes an active bevel gear arranged on one side of the main shaft, and the active bevel gear is connected to the driving motor through a transmission shaft; the active bevel gear is provided with a fan-shaped meshing section that can cooperate with the upper bevel gear and the lower bevel gear; the meshing section drives the main shaft to rotate in the forward or reverse direction through intermittent meshing with the upper bevel gear and the lower bevel gear, so as to drive the rotating compression paddle to swing back and forth in the compression chamber.

[0018] Preferably, an annular air inlet chamber is further provided outside the transition chamber and the compression chamber, and the compression chamber is connected to the air inlet chamber through a compression air inlet; a main air inlet for exhaust gas to enter is provided on the side wall of the air inlet chamber.

[0019] Preferably, a position control mechanism is further provided in the compression chamber, and the position control mechanism includes a position locking component and a detection component;

[0020] The detection assembly is capable of detecting the position of the meshing segment relative to the upper bevel gear and the lower bevel gear;

[0021] The locking assembly can trigger the locking assembly to lock the position of the rotating compression paddle when the meshing stroke of the meshing section with the upper bevel gear and the lower bevel gear ends; it can also trigger the locking assembly to unlock the rotating compression paddle when the meshing stroke of the meshing section with the upper bevel gear and the lower bevel gear starts.

[0022] Preferably, the detection assembly includes two detection sensors arranged on the upper and lower sides of the transmission shaft, and two induction bodies arranged on the active bevel gear and matched with the detection sensors; the induction bodies are respectively opposite to the positions of the two ends of the meshing section.

[0023] Preferably, the locking assembly includes a plurality of locking holes provided at the bottom of the paddle body of the rotating compression paddle, and electrically controlled telescopic pins correspondingly provided on the bottom surface of the compression chamber and cooperating with the locking holes.

[0024] Preferably, the tooth body of the meshing section is composed of a tooth core and a rubber tooth sleeve, and the thickness of the rubber tooth sleeve gradually becomes thinner from the front end to the rear end along the rotation direction of the meshing section.

[0025] The beneficial effects of the present invention are concentrated in the following aspects: by pressurizing the exhaust gas before activated carbon adsorption, the concentration of harmful substances in the exhaust gas can be greatly increased, facilitating subsequent operations such as condensation, drying, and activated carbon adsorption. Controlling the pressurization multiple to approximately 3-5 times ensures the efficiency of subsequent processing while avoiding the wasteful power consumption caused by excessive pressurization. The exhaust gas compressor used in the present invention adopts a swing-type compression method, which has the characteristics of compact structure, low power consumption, and strong operational continuity, providing a new treatment method for exhaust gas in paint production. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 for Figure 1 AA view of the structure shown in;

[0028] Figure 3 It is a structural diagram of the driving mechanism and the rotary compression paddle;

[0029] Figure 4 Schematic diagram of the structure of the meshing section of the active bevel gear;

[0030] Figure 5 This is a schematic diagram of the structure of the tooth core and rubber tooth sleeve of the tooth body in the meshing section. DETAILED DESCRIPTION

[0031] The present invention discloses a process for treating waste gas from paint production, which can centrally and uniformly treat hazardous waste gases generated in all stages of paint production. By pressurizing the waste gas before activated carbon adsorption, the concentration of harmful substances in the waste gas can be greatly increased, facilitating subsequent operations such as condensation, drying, and activated carbon adsorption. Simultaneously, the pressurization multiple is controlled at approximately 3-5 times, thereby ensuring subsequent treatment efficiency and avoiding power consumption caused by excessive pressurization.

[0032] The overall process includes the following steps:

[0033] Waste gas collection: According to the on-site equipment layout, the waste gas in the paint production process is collected using gas collection hoods, pipelines, etc. The gas collection methods include but are not limited to top discharge collection, side shot collection, direct collection in the tank, etc. The waste gas at each process equipment is collected and then merged into the main pipe through the branch pipe. The main pipe will uniformly guide the collected waste gas to the subsequent treatment equipment.

[0034] Pretreatment: Use bag filters, pleated dust collectors, etc. to dry filter the exhaust gas to remove solid particles in the exhaust gas and prevent clogging by particles.

[0035] Pressurization and concentration: By compressing the exhaust gas, the gas pressure is increased, and the concentration of harmful gases in the exhaust gas is increased. The exhaust gas pressure after compression is generally 0.3-0.5MPa. In the exhaust gas treatment process of the present invention, pressurizing the exhaust gas can significantly improve the efficiency of subsequent treatment. Pressurization can reduce the molecular distance between the components in the exhaust gas and relatively increase the concentration. This makes it easier to convert gaseous pollutants into liquid and thus separate them during the condensation and separation stage; during the drying process, moisture and the like are easier to remove; in the activated carbon adsorption process, due to the increase in pollutant concentration, the contact probability of activated carbon and pollutants increases, and the adsorption efficiency is greatly improved, ultimately achieving more efficient and thorough exhaust gas purification.

[0036] Condensation separation: Pressurized exhaust gas is condensed at a temperature of 20-30°C to remove high-boiling-point components from the exhaust gas. These components, such as benzene, toluene, and xylene, have boiling points ranging from 80-140°C. At this temperature, they partially condense into liquid form and are separated. Low-boiling-point organic solvents, such as ethyl acetate and butanone, can also be condensed and removed due to the lowered temperature. Furthermore, some volatile organic compounds (VOCs) with larger molecular weights and relatively low boiling points can also be effectively removed within this condensation temperature range, thereby reducing the concentration of harmful gases in the exhaust gas.

[0037] Drying: Exhaust gas is dried through silica gel adsorption, and the relative humidity (RH) of the exhaust gas after treatment is controlled below 40%. Before activated carbon adsorption, drying the exhaust gas with silica gel adsorption and controlling the relative humidity to ≤40% prevents moisture from competing with pollutants for activated carbon adsorption sites, improving adsorption efficiency. It also prevents moisture from causing activated carbon to agglomerate and block pores, ensuring stable adsorption performance and ensuring effective exhaust gas purification.

[0038] Activated carbon adsorption: The dried waste gas is adsorbed by activated carbon. Usually two sets of activated carbon adsorption equipment (activated carbon adsorption tanks) are set up, which alternately perform adsorption and desorption to ensure the continuity of waste gas treatment.

[0039] To achieve integrated and miniaturized waste gas treatment equipment, the present invention discloses paint production waste gas treatment equipment. The equipment generally comprises a waste gas compressor 1, and a condenser 2, a silica gel drying tank 3, and an activated carbon adsorption tank 4, which are disposed above the waste gas compressor 1 and are sequentially connected. Before entering the waste gas compressor 1, the waste gas is dry-filtered through a bag filter. This waste gas treatment equipment features high integration and a small footprint. In particular, the waste gas compressor utilizes a swing-type compression mechanism, resulting in a compact and sophisticated structure, low power consumption, and strong operational continuity. This provides a novel approach to waste gas treatment in paint production.

[0040] The exhaust gas treatment equipment of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] like Figure 1 As shown in FIG, the exhaust gas compressor 1 of the present invention comprises a disc-shaped compression chamber 5 and an exhaust gas temporary storage chamber 6 arranged above the compression chamber 5, which together realize the compression and temporary storage of the exhaust gas. Figure 1 and 2 As shown in FIG, two sector-shaped transition chambers 7 are symmetrically arranged within the compression chamber 5. The sector angle of the transition chambers 7 is generally between 35 and 60 degrees. The transition chambers 7 are connected to the exhaust gas temporary storage chamber 6 at the top. In other words, the compressed exhaust gas first enters the transition chamber 7 and then enters the exhaust gas temporary storage chamber 6 from the transition chamber 7 for storage. The connection is usually achieved by directly opening a through hole in the top surface of the transition chamber 7 to enter the exhaust gas temporary storage chamber 6.

[0042] like Figure 2As shown, a compression chamber 8 is formed between the two transition chambers 7. A compression air inlet 9 is provided on the outer wall of the compression chamber 8 close to the transition chamber 7, and a one-way valve for unidirectional conduction from the outside to the inside is provided at the compression air inlet 9. A better approach may be that an annular air inlet chamber 20 is further provided outside the transition chamber 7 and the compression chamber 8, and the compression chamber 8 is connected to the air inlet chamber 20 through the compression air inlet 9. A main air inlet 21 for exhaust gas to enter is provided on the side wall of the air inlet chamber 20. The annular air inlet chamber 20 can meet the air intake needs of multiple compression air inlets 9 at the same time. It adopts an annular layout, has a compact structure, and does not require the setting of multiple branches to achieve connection to the compression air inlets 9.

[0043] A compressed air outlet 10 is provided on the side wall of the transition chamber 7 adjacent to the compression chamber 8. A pressure-limiting valve is provided at the compressed air outlet 10, providing one-way flow from the compression chamber 8 to the transition chamber 7. The pressure limit is set between 0.3 and 0.5 MPa. A rotating compression paddle is provided at the center of the compression chamber 5. Driven by a drive mechanism, the rotating compression paddle oscillates back and forth within the compression chamber 8.

[0044] During the operation of the compression chamber 5, the rotating compression paddle is driven by the driving mechanism to swing back and forth in the compression chamber 8. During the swinging process, the compression chamber 8 on the side facing the direction of its movement is in the compression working area, while the other side is in the intake area. When the rotating compression paddle swings toward the transition chamber 7 on one side, the exhaust gas in the compression working area is compressed. When the preset pressure is reached, it can be discharged through the compression outlet 10 and enter the transition chamber 7. At this time, the exhaust gas that has not been compressed enters the intake area of ​​the compression chamber 8 through the compression inlet 9 of the intake area. When the rotating compression paddle swings in the opposite direction, the intake area and the compression working area are swapped. This form of swing compression has a compact structure and can achieve effective compression of the exhaust gas within each swing stroke.

[0045] The specific installation form of the rotary compression propeller is the shaft sleeve installation, combined with Figure 2 and 3 As shown in , a main shaft 11 is provided at the center of the compression chamber 5, and the main shaft 11 is connected to the drive mechanism. The rotating compression paddle includes a sleeve 12 fixedly mounted on the outside of the main shaft 11, and a paddle body 13 extending radially along the compression chamber 5. During the rotation of the main shaft 11, the sleeve 12 is driven to swing back and forth around the center of the main shaft 11, thereby driving the paddle body 13 to swing, thereby compressing the air. Considering the sealing problem between the paddle body 13 and the compression chamber 8, it is generally necessary to provide a rubber sleeve on the contact surface between the paddle body 13 and the wall of the compression chamber 8.

[0046] When the main shaft 11 is driven to swing back and forth, a better approach of the present invention may be as follows: Figure 3As shown in , the driving mechanism includes an upper bevel gear 14 and a lower bevel gear 15 symmetrically arranged at the lower section of the main shaft 11, and also includes a driving bevel gear 16 arranged on one side of the main shaft 11, and the driving bevel gear 16 is connected to the driving motor 18 through a transmission shaft 17. Figure 4 As shown, the driving bevel gear 16 is provided with a fan-shaped meshing section 19 that can cooperate with the upper bevel gear 14 and the lower bevel gear 15. The length of the meshing section 19 is consistent with the compression stroke. The meshing section 19 drives the main shaft 11 to rotate in the forward or reverse direction through intermittent meshing with the upper bevel gear 14 and the lower bevel gear 15, thereby driving the rotating compression paddle to swing back and forth within the compression chamber 8. During operation, the drive motor 18 drives the driving bevel gear 16 to rotate via the transmission shaft 17. When the driving bevel gear 16 rotates to the point where the meshing section 19 meshes with the upper bevel gear 14, the main shaft 11 is driven to rotate through the upper bevel gear 14; when the driving bevel gear 16 rotates to the point where the meshing section 19 meshes with the lower bevel gear 15, the main shaft 11 is driven to rotate through the lower bevel gear 15, ultimately achieving reciprocating rotation of the main shaft 11.

[0047] In practical applications, in order to ensure the precise fit of the upper bevel gear 14 , the lower bevel gear 15 and the active bevel gear 16 , the relevant parameters of each gear and the meshing section 19 should be accurately calculated to ensure the accuracy of their fit.

[0048] At the same time, considering that when the rotating compression paddle compresses the exhaust gas, the exhaust gas is easily compressed in the first stroke, and the reaction force it receives is relatively small; while in the second stroke, the exhaust gas pressure has risen, and when it is further compressed, the reaction force it receives is relatively large; that is, in the first stroke, when the meshing section 19 just meshes with the upper and lower bevel gears, it is mainly necessary to ensure stable contact, and the rigidity requirement for the meshing between the teeth is lower at this time; while the rigidity requirement is higher in the second stroke. For this reason, Figure 5 As shown in , a preferred embodiment of the present invention is that the teeth of the meshing section 19 are composed of a tooth core 26 and a rubber tooth sleeve 27, with the thickness of the rubber tooth sleeve 27 gradually decreasing from the front end to the rear end of the meshing section 19 in the direction of rotation, or even eliminating the rubber tooth sleeve 27 at the rear end. In the early part of the compression stroke, the thicker rubber tooth sleeve 27 and relatively smaller tooth core 26 can reduce the initial inter-tooth collision between the meshing section 19 and the upper and lower bevel gears, facilitating more meshing guidance and preventing tooth clashing. In the latter part of the stroke, as the reaction force increases, a more rigid meshing is required, and the larger tooth core 26 ensures the integrity and stability of power transmission.

[0049] In addition, in order to prevent the shaft 11 from rebounding due to the large reaction force on the latter part of the compression stroke, the compression cavity 8 is further provided with a position control mechanism, which includes a position locking assembly and a detection assembly. The detection assembly can detect the position of the engaging section 19 relative to the upper bevel gear 14 and the lower bevel gear 15. The locking assembly can trigger the locking assembly to lock the position of the rotating compression paddle when the engaging section 19 is disengaged from the upper bevel gear 14 and the lower bevel gear 15.

[0050] The detection assembly commonly used includes two detection sensors 22 arranged on both sides of the transmission shaft 17, and two inductors 23 arranged on the driving bevel gear 16 and matched with the detection sensors 22. The inductors 23 are respectively opposite to the positions of the two ends of the engaging section 19. The detection sensor 22 and the inductor 23 adopt proximity induction or de-induction. When the inductor 23 rotates to the position of the detection sensor 22, the head and tail positions of the engaging section 19 can be detected, and the locking assembly can be further controlled to act.

[0051] The locking assembly has various structural forms. For example, it can adopt magnetic adsorption for locking. Permanent magnetic adsorption bodies are arranged on the rotating compression paddle, and electromagnetic adsorption bodies are arranged at the corresponding positions of the compression cavity 8. The locking is realized by the adsorption of the electromagnetic adsorption bodies on the permanent magnetic adsorption bodies. As shown in the figure, the locking assembly includes a plurality of locking holes 24 arranged at the bottom of the paddle body 13 of the rotating compression paddle, and electrically controlled telescopic pins 25 arranged at the bottom surface of the compression chamber 5 and matched with the locking holes 24. The locking is formed by the electrically controlled telescopic pins 25 extending into the locking holes 24, or the electrically controlled telescopic pins 25 directly block the back side of the rotating compression paddle.

Claims

1. A coating production waste gas treatment process, comprising the following steps: A. Waste gas collection: Collect waste gas from the paint production process; B. Pretreatment: Use bag filters to dry filter the exhaust gas to remove solid particles in the exhaust gas; C. Pressurization and concentration: compress the exhaust gas to increase the concentration of harmful gases in the exhaust gas; the exhaust gas pressure after compression is 0.3-0.5MPa; D. Condensation separation: The pressurized exhaust gas is condensed and the condensation temperature is controlled at 20-30°C to remove high-boiling point components in the exhaust gas; E. Drying treatment: The exhaust gas is dried by silica gel adsorption. After treatment, the relative humidity RH of the exhaust gas is controlled below 40%; F. Activated carbon adsorption: The dried waste gas is adsorbed by activated carbon.

2. The coating production waste gas treatment equipment using the process described in claim 1 is characterized by: The invention comprises an exhaust gas compressor (1), and a condensation tank (2), a silica gel drying tank (3), and an activated carbon adsorption tank (4) which are arranged above the exhaust gas compressor (1) and are connected in sequence.

3. The coating production waste gas treatment equipment according to claim 2, characterized in that: The exhaust gas compressor (1) comprises a disc-shaped compression chamber (5) and an exhaust gas temporary storage chamber (6) arranged above the compression chamber (5); Two fan-shaped transition chambers (7) are symmetrically arranged in the compression chamber (5), and the transition chamber (7) is communicated with the exhaust gas temporary storage chamber (6) at the top; a compression chamber (8) is formed between the two transition chambers (7); a compression air inlet (9) is arranged on the outer side wall of the compression chamber (8) close to the transition chamber (7), and a one-way valve for one-way conduction from outside to inside is arranged at the compression air inlet (9); a compression air outlet (10) is arranged on the side wall of the transition chamber (7) adjacent to the compression chamber (8), and a pressure-limiting valve for one-way conduction from the compression chamber (8) to the transition chamber (7) is arranged at the compression air outlet (10); A rotating compression paddle is provided at the center of the compression chamber (5), and the rotating compression paddle swings back and forth in the compression cavity (8) under the drive of the driving mechanism.

4. The paint production waste gas treatment equipment according to claim 3, characterized in that: A main shaft (11) is provided at the center of the compression chamber (5), and the main shaft (11) is connected to a driving mechanism; the rotary compression paddle comprises a shaft sleeve (12) fixedly sleeved outside the main shaft (11), and a paddle body (13) extending radially along the compression chamber (5).

5. The paint production waste gas treatment equipment according to claim 4, characterized in that: The driving mechanism comprises an upper bevel gear (14) and a lower bevel gear (15) symmetrically arranged at the lower section of the main shaft (11), and also comprises an active bevel gear (16) arranged on one side of the main shaft (11), wherein the active bevel gear (16) is connected to a driving motor (18) via a transmission shaft (17); a fan-shaped meshing section (19) is provided on the active bevel gear (16) and can cooperate with the upper bevel gear (14) and the lower bevel gear (15); the meshing section (19) drives the main shaft (11) to rotate in a forward or reverse direction through intermittent meshing with the upper bevel gear (14) and the lower bevel gear (15), thereby driving the rotating compression paddle to swing back and forth in the compression chamber (8).

6. The paint production waste gas treatment equipment according to claim 5, characterized in that: An annular air inlet chamber (20) is further provided outside the transition chamber (7) and the compression chamber (8), and the compression chamber (8) is connected to the air inlet chamber (20) via a compression air inlet (9); a main air inlet (21) for exhaust gas to enter is provided on the side wall of the air inlet chamber (20).

7. The paint production waste gas treatment equipment according to claim 6, characterized in that: A position control mechanism is also provided in the compression chamber (8), and the position control mechanism comprises a position locking component and a detection component; The detection assembly is capable of detecting the position of the meshing section (19) relative to the upper bevel gear (14) and the lower bevel gear (15); The locking assembly can trigger the locking assembly to lock the position of the rotating compression paddle when the meshing stroke of the meshing section (19) with the upper bevel gear (14) and the lower bevel gear (15) ends; and can also trigger the locking assembly to unlock the rotating compression paddle when the meshing stroke of the meshing section (19) with the upper bevel gear (14) and the lower bevel gear (15) begins.

8. The paint production waste gas treatment equipment according to claim 7, characterized in that: The detection assembly comprises two detection sensors (22) arranged on the upper and lower sides of the transmission shaft (17), and two induction bodies (23) arranged on the active bevel gear (16) and cooperating with the detection sensors (22); the induction bodies (23) are respectively positioned opposite to the two ends of the meshing section (19).

9. The paint production waste gas treatment equipment according to claim 8, characterized in that: The locking assembly comprises a plurality of locking holes (24) arranged at the bottom of the paddle body (13) of the rotating compression paddle, and an electrically controlled telescopic pin (25) correspondingly arranged on the bottom surface of the compression chamber (5) and cooperating with the locking holes (24).

10. The paint production waste gas treatment equipment according to claim 9, characterized in that: The tooth body of the meshing section (19) is composed of a tooth core (26) and a rubber tooth sleeve (27), and the thickness of the rubber tooth sleeve (27) gradually becomes thinner from the front end to the rear end along the rotation direction of the meshing section (19).

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