A waste gas recycling device of a coating machine

Abstract

The application discloses a kind of coating machine exhaust gas recycling device, including machine body shell, feeding port, electric motor, heating chamber, mixing chamber, inner layer activated carbon filter screen and heating pipe;The outer wall of one side of the machine body shell is fixedly connected with filter chamber, the outer wall of the other side of filter chamber is fixedly connected with outer layer mounting seat, outer layer mounting groove is opened in the upper surface of outer layer mounting seat, outer layer activated carbon filter screen is fixedly connected in the upper surface of outer layer mounting groove, the upper surface of outer layer activated carbon filter screen is fixedly connected with second handle;The present application is designed with portable activated carbon filter assembly, activated carbon filter screen is used in multiple structure design, and waste gas is efficiently treated in coating machine, and the efficiency of waste gas treatment is effectively improved;Second, design has high-temperature processing component, heating pipe is used to realize omnidirectional heating of heating chamber by motor, and harmful substances in waste gas are effectively converted into more stable or harmless compounds by pyrolysis reaction.

Description

Technical Field

[0001] This invention relates to the field of waste gas recovery and reuse technology, specifically to a waste gas recovery and reuse device for a coating machine. Background Technology

[0002] A coating machine is a device used to apply coatings to the surfaces of various materials. The working principle of a coating machine is to uniformly coat the surface of an object using physical and chemical methods, forming a coating with specific properties. Based on the physical and chemical properties of substances, the coating is applied to the surface of the object through methods such as spraying, rolling, and brushing, forming a coating with properties such as corrosion resistance, wear resistance, heat insulation, fire resistance, and electrical conductivity. The coating can prevent corrosion and damage to the object's surface, extending its service life; it can improve the object's appearance, increasing its aesthetics; and it can endow the object with specific functions. Applications include heat insulation, fireproofing, and electrical conductivity. However, coating machines generate a large amount of waste gas during operation. The waste gas mainly comes from organic solvents, resins, and additives that evaporate during the coating and drying process. These waste gases contain a large amount of volatile organic compounds (VOCs), including aromatic hydrocarbons such as benzene, toluene, and xylene; esters such as ethyl acetate and butyl acetate; ketones such as acetone and butanone; as well as alcohols and ethers. Due to the large amount of organic solvents used and evaporated during the coating process, the concentration of organic matter in the waste gas is high and it has a certain viscosity, making it easy to adhere and accumulate in the treatment equipment, increasing the difficulty of equipment maintenance.

[0003] However, traditional coating machine exhaust gas recovery and reuse devices cannot meet people's needs due to the following shortcomings: First, they lack portable and detachable activated carbon filter components, making it impossible to effectively treat the exhaust gas generated by the coating machine, thus reducing exhaust gas treatment efficiency. Furthermore, the exhaust gas treatment device has a relatively complex structure, is difficult to operate, has high maintenance costs, and is not conducive to daily disassembly and installation. The complex device structure also consumes more energy, significantly increasing the start-up cost. Second, they lack high-temperature treatment components, making it impossible to achieve all-round heating of the heating chamber and create a high-temperature environment. This prevents the conversion of harmful substances in the exhaust gas into more stable or harmless compounds through pyrolysis. Other treatment methods require the addition of extra chemical agents, making the process relatively complex, increasing time and cost consumption. The reaction components also occupy a relatively large space, increasing space requirements. Third, they lack mixing and stirring components, making it impossible to treat the gaseous compounds after the reaction, and unable to effectively mix the gases into a usable liquid. This increases the impact of gaseous compounds on the air, prevents resource reuse, and reduces the device's treatment efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a waste gas recovery and reuse device for a coating machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waste gas recovery and reuse device for a coating machine, comprising a machine body shell, a filter chamber fixedly connected to one side outer wall of the machine body shell, a preliminary filter screen fixedly connected to one side outer wall of the filter chamber, an outer layer mounting base fixedly connected to the other side outer wall of the filter chamber, an outer layer mounting groove formed on the upper surface of the outer layer mounting base, an outer layer activated carbon filter screen fixedly connected to the upper surface of the outer layer mounting groove, and the outer layer activated carbon filter screen sleeved on the upper surface of the machine body shell, a second handle fixedly connected to the upper surface of the outer layer activated carbon filter screen, a filter conveying pipe sleeved on one side outer wall of the filter chamber, an electronic valve fixedly connected to one side outer wall of the heating conveying pipe, a heating chamber fixedly sleeved at the output end of the filter conveying pipe, and the heating chamber fixedly connected to one side outer wall of the machine body shell, a heating conveying pipe sleeved on the upper surface of the heating chamber, a mixing chamber sleeved at the output end of the heating conveying pipe, and the mixing chamber fixedly connected to one side outer wall of the machine body shell.

[0006] As a further technical solution of the present invention, a first motor is fixedly connected to one side of the outer wall of the heating chamber, a heater is fixedly connected to the upper surface of the first motor, a heating tube is fixedly connected to one side of the outer wall of the heater, and a hollow shell is fixedly connected to one side of the outer wall of the heating tube, and the hollow shell is fixedly connected to one side of the outer wall of the heater.

[0007] As a further technical solution of the present invention, a second motor is fixedly connected to one side of the outer wall of the mixing chamber, an upper roller is fixedly connected to the output end of the second motor, and the upper roller is sleeved on one side of the outer wall of the mixing chamber. An upper agitator is fixedly connected to one side of the outer wall of the upper roller, and a layering plate is provided on the lower surface of the upper roller, and the layering plate is fixedly connected to one side of the outer wall of the mixing chamber.

[0008] As a further technical solution of the present invention, an inner layer mounting seat is fixedly connected to one side of the outer wall of the filter chamber. An inner layer mounting groove is opened on the upper surface of the inner layer mounting seat. An inner layer activated carbon filter screen is fixedly connected to the upper surface of the inner layer mounting groove. The inner layer activated carbon filter screen is sleeved on the upper surface of the outer shell of the machine body. A first handle is fixedly connected to the upper surface of the inner layer activated carbon filter screen.

[0009] As a further technical solution of the present invention, a third motor is fixedly connected to one side of the outer wall of the mixing chamber, and the third motor is disposed on the lower surface of the layered plate. The output end of the third motor is fixedly connected to a lower roller, and the lower roller is sleeved on one side of the outer wall of the mixing chamber. A lower agitator is fixedly connected to one side of the outer wall of the lower roller.

[0010] As a further technical solution of the present invention, an exhaust gas conveying pipe is fixedly connected to the upper surface of the outer shell of the machine body, a power pipe is fixedly connected to one end of the exhaust gas conveying pipe, an adapter pipe is fixedly connected to one end of the power pipe, and the coating machine body is fixedly connected to the other end of the adapter pipe.

[0011] As a further technical solution of the present invention, an electric motor is provided on one side of the outer wall of the power pipe, a fan is fixedly connected to the output end of the electric motor, a partition is fixedly connected to one side of the outer wall of the electric motor, and the partition is fixedly connected to one side of the outer wall of the power pipe.

[0012] As a further technical solution of the present invention, a filter hole is provided on one side of the outer wall of the partition, and a protective shell is fixedly connected to one side of the outer wall of the electric motor.

[0013] As a further technical solution of the present invention, a drain pipe is provided on the lower surface of the outer shell of the machine body, and the drain pipe is located on the lower surface of the mixing chamber.

[0014] As a further technical solution of the present invention, a feeding pipe is sleeved on the upper surface of the mixing chamber, and the feeding pipe is sleeved on one side of the outer wall of the machine body, and a feeding port is fixedly connected to the upper surface of the feeding pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention features a portable and detachable activated carbon filter assembly. It employs an easily disassembled and installed activated carbon filter screen combined with a multi-layered structural design. Utilizing the highly developed pore structure and large specific surface area of ​​activated carbon, it adsorbs organic matter in waste gas. When waste gas passes through the activated carbon adsorption bed, the organic components are adsorbed within the micropores of the activated carbon, efficiently treating the waste gas from the coating machine and effectively improving waste gas treatment efficiency. Furthermore, the structure is simple, easy to operate, and has low maintenance costs. The activated carbon filter screen is easy to disassemble, and after disassembly, it can be heated to desorb the adsorbed organic matter, allowing for repeated use and improving resource reuse. Secondly, it incorporates a high-temperature treatment unit. The device employs a heating element paired with a motor to achieve all-around heating of the heating chamber, rapidly creating a high-temperature environment. This effectively transforms harmful substances in the waste gas into more stable or harmless compounds through pyrolysis. High-temperature treatment requires no chemical additives, making the process simple and fast, saving time and costs. Furthermore, it requires less equipment, reducing space requirements. Thirdly, it incorporates a mixing and stirring component, using a stirrer and neutralizing agent to neutralize the gas after high-temperature treatment. This effectively treats the gas, mixing it into a usable liquid, reducing its impact on the air, enabling resource reuse, and improving the device's processing efficiency while reducing additional costs. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a front view structural diagram of the present invention;

[0018] Figure 3 This is a top view of the structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention;

[0020] Figure 5 This is a three-dimensional structural diagram of the outer shell of the present invention;

[0021] Figure 6 This is a three-dimensional cross-sectional view of the outer shell of the present invention;

[0022] Figure 7 This is a three-dimensional structural diagram of the activated carbon filter screen of the present invention.

[0023] In the diagram: 1. Coating machine body; 2. Transfer pipe; 3. Power pipe; 4. Exhaust gas conveying pipe; 5. Feed inlet; 6. Machine casing; 7. Drain pipe; 8. Fan; 9. Baffle plate; 10. Filter holes; 11. Electric motor; 12. Protective shell; 13. First handle; 14. Second handle; 15. Preliminary filter screen; 16. Feeding pipe; 17. Filter chamber; 18. Filter conveying pipe; 19. Heating chamber; 20. Electronic valve; 21. Mixing chamber; 22. 23. Heating conveying pipe; 24. Outer activated carbon filter screen; 25. Inner activated carbon filter screen; 26. Outer mounting base; 27. Outer mounting groove; 28. Inner mounting groove; 29. ​​Inner mounting base; 30. Heater; 31. Heating pipe; 32. Hollowed-out outer shell; 33. First motor; 34. Second motor; 35. Upper agitator; 36. Upper drum; 37. Layered plate; 38. Third motor; 39. Lower drum; 30. Lower agitator. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see the appendix Figure 1 -Appendix Figure 7An embodiment of the present invention provides a waste gas recovery and reuse device for a coating machine, comprising a machine body shell 6, a filter chamber 17 fixedly connected to one side outer wall of the machine body shell 6, a preliminary filter screen 15 fixedly connected to one side outer wall of the filter chamber 17, an outer layer mounting base 25 fixedly connected to the other side outer wall of the filter chamber 17, an outer layer mounting groove 26 formed on the upper surface of the outer layer mounting base 25, an outer layer activated carbon filter screen 23 fixedly connected to the upper surface of the outer layer mounting groove 26, and the outer layer activated carbon filter screen 23 sleeved on the upper surface of the machine body shell 6, a second handle 14 fixedly connected to the upper surface of the outer layer activated carbon filter screen 23, and a second handle 14 fixedly connected to the upper surface of the outer layer activated carbon filter screen 23. A filter conveying pipe 18 is fitted onto the outer wall of a heating conveying pipe 22. An electronic valve 20 is fixedly connected to one side of the outer wall of the filter conveying pipe 18. A heating chamber 19 is fixedly fitted onto the output end of the filter conveying pipe 18 and is fixedly connected to one side of the outer wall of the outer casing 6. A heating conveying pipe 22 is fitted onto the upper surface of the heating chamber 19. A mixing chamber 21 is fitted onto the output end of the heating conveying pipe 22 and is fixedly connected to one side of the outer wall of the outer casing 6. A first motor 32 is fixedly connected to one side of the outer wall of the heating chamber 19. A heater 29 is fixedly connected to the upper surface of the first motor 32. A heating pipe 30 is fixedly connected to one side of the outer wall of the heater 29. A perforated outer shell 31 is fixedly connected to the upper part of the heating chamber 29, and the perforated outer shell 31 is fixedly connected to one side of the outer wall of the heater 29. The perforated outer shell 31 is used to protect the heating tube 30 and to rapidly heat the heating chamber 19 through the perforated part. A second motor 33 is fixedly connected to one side of the outer wall of the mixing chamber 21. An upper roller 35 is fixedly connected to the output end of the second motor 33, and the upper roller 35 is sleeved on one side of the outer wall of the mixing chamber 21. An upper agitator 34 is fixedly connected to one side of the outer wall of the upper roller 35. A layering plate 36 is provided on the lower surface of the upper roller 35, and the layering plate 36 is fixedly connected to one side of the outer wall of the mixing chamber 21. The layering plate 36 is used to separate the mixing chamber. 21. The liquid is fully mixed in the upper space before it falls into the lower space through the layering plate 36. An inner layer mounting base 28 is fixedly connected to one side of the outer wall of the filter chamber 17. An inner layer mounting groove 27 is opened on the upper surface of the inner layer mounting base 28. An inner layer activated carbon filter screen 24 is fixedly connected to the upper surface of the inner layer mounting groove 27. The inner layer activated carbon filter screen 24 is sleeved on the upper surface of the outer shell 6. A first handle 13 is fixedly connected to the upper surface of the inner layer activated carbon filter screen 24. The inner layer mounting base 28 and the inner layer mounting groove 27 realize the installation of the inner layer activated carbon filter screen 24. The first handle 13 is used to realize the quick installation or removal of the inner layer activated carbon filter screen 24.A third motor 37 is fixedly connected to one outer wall of the mixing chamber 21, and the third motor 37 is located on the lower surface of the layer plate 36. The output end of the third motor 37 is fixedly connected to a lower roller 38, which is sleeved on one outer wall of the mixing chamber 21. A lower agitator 39 is fixedly connected to one outer wall of the lower roller 38. The lower agitator 39 is used to more thoroughly stir the liquid and make it fully mixed. An exhaust gas conveying pipe 4 is fixedly connected to the upper surface of the machine body shell 6. One end of the exhaust gas conveying pipe 4 is fixedly connected to a power pipe 3. One end of the power pipe 3 is fixedly connected to a transfer pipe 2. The other end of the transfer pipe 2 is fixedly connected to the coating machine body 1. The exhaust gas conveying pipe 4 is used to transport the exhaust gas generated by the coating machine body 1 to the recovery device. An electric motor 11 is installed on one outer wall of the power pipe 3. The output end of the electric motor 11 is fixedly connected to a fan 8. A partition 9 is fixedly connected to one side of the outer wall of the power pipe 3, and the partition 9 is fixedly connected to one side of the outer wall of the power pipe 3. The partition 9 is used to install the electric motor 11. A filter hole 10 is opened on one side of the outer wall of the partition 9, and a protective shell 12 is fixedly connected to one side of the outer wall of the electric motor 11. The filter hole 10 is used to filter solid matter in the exhaust gas to prevent impurities from damaging the recovery device. The protective shell 12 is used to protect the electric motor 11 to prevent exhaust gas from damaging it and to improve its service life. A drain pipe 7 is opened on the lower surface of the outer shell 6, and the drain pipe 7 is opened on the lower surface of the mixing chamber 21. The drain pipe 7 is used to discharge the fully mixed liquid. A feeding pipe 16 is sleeved on the upper surface of the mixing chamber 21, and the feeding pipe 16 is sleeved on one side of the outer wall of the outer shell 6. A feeding port 5 is fixedly connected to the upper surface of the feeding pipe 16. The feeding port 5 is used to add an appropriate amount of water and neutralizing agent to the mixing chamber 21.

[0026] Working Principle: When using this invention, the exhaust gas generated by the coating machine body 1 is first transferred through the transfer pipe 2. The electric motor 11 in the power pipe 3 is started by the control panel. The electric motor 11 controls the fan 8 to start rotating, generating a certain airflow. The gas in the coating machine body 1 is drawn into the exhaust gas delivery pipe 4, and the solid matter in the exhaust gas is filtered through the filter holes 10 on the partition 9 to prevent impurities from damaging the recovery device. The electric motor 11 is installed through the partition 9 and protected by the protective shell 12 to avoid damage from the exhaust gas and to improve its service life. The exhaust gas is transported through the exhaust gas delivery pipe 4 to the filter chamber 17 on the outer shell 6 of the machine body, where it is initially filtered through the preliminary filter screen 15 to remove impurities from the exhaust gas. The remaining gas is treated by passing through the outer activated carbon filter 23 and the inner activated carbon filter 24. The activated carbon filter adopts a multi-layer structure design, utilizing the highly developed pore structure and huge specific surface area of ​​activated carbon to adsorb organic matter in the waste gas. When the waste gas passes through the activated carbon adsorption bed, the organic components are adsorbed in the micropores of the activated carbon, efficiently treating the waste gas from the coating machine and effectively improving the waste gas treatment efficiency. The outer activated carbon filter 23 is installed through the outer mounting base 25 and the outer mounting groove 26, and the inner activated carbon filter 24 is installed through the inner mounting groove 27 and the inner mounting base 28. During use, it can be quickly disassembled or installed using the first handle 13 and the second handle 14 on the upper layer. The structure design is simple and easy to operate. It is convenient, has low maintenance costs, and allows for easy disassembly of the activated carbon filter. After disassembly, the filter can be heated to desorb the adsorbed organic matter, allowing for reuse and improving resource recycling. The filtered gas is transported to the heating chamber 19 through the filter conveying pipe 18. The first motor 32 inside the heating chamber 19 drives the heater 29 to rotate. The heater 29 controls the heating tube 30 to start heating, continuously increasing the temperature until the set temperature is reached, achieving all-around heating of the heating chamber 19. This quickly creates a high-temperature environment, effectively converting harmful substances in the waste gas into more stable or harmless compounds through pyrolysis. High-temperature treatment requires no chemical additives, making the process simple and fast, saving time and costs. Furthermore, it requires less equipment, reducing space requirements. Furthermore, the heating element 30 is protected by a perforated outer shell 31. The reacted gaseous compounds are transported to the mixing chamber 21 through the heating conveying pipe 22. The transfer of gaseous compounds is controlled by the electronic valve 20 to prevent the escape of incompletely heated gases. Once the gaseous compounds have dispersed into the mixing chamber 21, water is introduced into the mixing chamber 21 through the feeding port 5 via the feeding pipe 16 to mix with the gaseous compounds. The required neutralizing agent is added through the feeding pipe 16. The second motor 33 and the third motor 37 are controlled by the control panel to start the rotation of the upper roller 35 and the lower roller 38, so that the upper agitator 34 and the lower agitator 39 can fully mix the liquid. After mixing, the liquid is transported to the storage tank through the drain pipe 7 for subsequent use.The mixing component uses a stirrer and a neutralizing agent to neutralize the gas after high-temperature treatment, effectively processing the gas to mix it into a usable liquid, reducing the gas's impact on the air, achieving resource reuse, and rationally treating the gas. This improves the processing efficiency of the device and reduces additional costs. The dividing plate 36 separates the mixing chamber 21, ensuring that the liquid is fully mixed in the upper space before falling into the lower space through the dividing plate 36.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coating machine exhaust gas recycling device comprising a machine housing (6), characterized in that: A filter chamber (17) is fixedly connected to one side of the outer wall of the outer casing (6). A preliminary filter screen (15) is fixedly connected to one side of the outer wall of the filter chamber (17). An outer mounting base (25) is fixedly connected to the other side of the outer wall of the filter chamber (17). An outer mounting groove (26) is provided on the upper surface of the outer mounting base (25). An outer activated carbon filter screen (23) is fixedly connected to the upper surface of the outer mounting groove (26). The outer activated carbon filter screen (23) is sleeved on the upper surface of the outer casing (6). A preliminary filter screen (15) is fixedly connected to the upper surface of the outer activated carbon filter screen (23). The second handle (14) has a filter conveying pipe (18) sleeved on one side of the outer wall of the filter chamber (17), an electronic valve (20) fixedly connected to one side of the outer wall of the heating conveying pipe (22), a heating chamber (19) fixedly sleeved at the output end of the filter conveying pipe (18), and the heating chamber (19) fixedly connected to one side of the outer wall of the machine body shell (6), a heating conveying pipe (22) sleeved on the upper surface of the heating chamber (19), a mixing chamber (21) sleeved at the output end of the heating conveying pipe (22), and the mixing chamber (21) fixedly connected to one side of the outer wall of the machine body shell (6).

2. A waste gas recovery and recycling device for a coating machine according to claim 1, characterized in that: A first motor (32) is fixedly connected to one side of the outer wall of the heating chamber (19). A heater (29) is fixedly connected to the upper surface of the first motor (32). A heating tube (30) is fixedly connected to one side of the outer wall of the heater (29). A hollow shell (31) is fixedly connected to one side of the outer wall of the heating tube (30), and the hollow shell (31) is fixedly connected to one side of the outer wall of the heater (29).

3. A waste gas recovery and recycling device for a coating machine according to claim 1, characterized in that: A second motor (33) is fixedly connected to one side of the outer wall of the mixing chamber (21). An upper roller (35) is fixedly connected to the output end of the second motor (33). The upper roller (35) is sleeved on one side of the outer wall of the mixing chamber (21). An upper agitator (34) is fixedly connected to one side of the outer wall of the upper roller (35). A layer plate (36) is provided on the lower surface of the upper roller (35). The layer plate (36) is fixedly connected to one side of the outer wall of the mixing chamber (21).

4. The waste gas recovery and reuse device for a coating machine according to claim 1, characterized in that: An inner layer mounting base (28) is fixedly connected to one side of the outer wall of the filter chamber (17). An inner layer mounting groove (27) is opened on the upper surface of the inner layer mounting base (28). An inner layer activated carbon filter (24) is fixedly connected to the upper surface of the inner layer mounting groove (27). The inner layer activated carbon filter (24) is sleeved on the upper surface of the outer shell (6) of the machine body. A first handle (13) is fixedly connected to the upper surface of the inner layer activated carbon filter (24).

5. The waste gas recovery and recycling device of a coating machine according to claim 3, characterized in that: A third motor (37) is fixedly connected to one side of the outer wall of the mixing chamber (21), and the third motor (37) is located on the lower surface of the layer plate (36). The output end of the third motor (37) is fixedly connected to the lower roller (38), and the lower roller (38) is sleeved on one side of the outer wall of the mixing chamber (21). A lower agitator (39) is fixedly connected to one side of the outer wall of the lower roller (38).

6. The waste gas recovery and recycling device of a coating machine according to claim 1, characterized in that: The upper surface of the outer shell (6) of the machine body is fixedly connected to an exhaust gas conveying pipe (4), one end of the exhaust gas conveying pipe (4) is fixedly connected to a power pipe (3), one end of the power pipe (3) is fixedly connected to an adapter pipe (2), and the other end of the adapter pipe (2) is fixedly connected to the coating machine body (1).

7. The waste gas recovery and reuse device for a coating machine according to claim 6, characterized in that: An electric motor (11) is provided on one side of the outer wall of the power pipe (3). A fan (8) is fixedly connected to the output end of the electric motor (11). A partition (9) is fixedly connected to one side of the outer wall of the electric motor (11), and the partition (9) is fixedly connected to one side of the outer wall of the power pipe (3).

8. A waste gas recovery and recycling device for a coating machine according to claim 7, characterized in that: A filter hole (10) is provided on one side of the outer wall of the partition (9), and a protective shell (12) is fixedly connected to one side of the outer wall of the electric motor (11).

9. The waste gas recovery and recycling device of a coating machine according to claim 6, characterized in that: The lower surface of the outer shell (6) of the machine body is provided with a drain pipe (7), and the drain pipe (7) is located on the lower surface of the mixing chamber (21).

10. The waste gas recovery and recycling device of a coating machine according to claim 1, characterized in that: The upper surface of the mixing chamber (21) is fitted with a feeding pipe (16), and the feeding pipe (16) is fitted onto one side of the outer wall of the machine body shell (6). The upper surface of the feeding pipe (16) is fixedly connected with a feeding port (5).

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