An air circulation control system for a sanding and painting booth

Abstract

This invention discloses an air circulation control system for a sanding and painting booth, relating to the field of sanding and painting booths. It includes an air intake unit, a circulating air module, a temperature and humidity control unit, an exhaust unit, a booth body, a waste gas treatment mechanism, a waste gas emission mechanism, a fresh air intake mechanism, and a filtration mechanism. In this invention, the flow control module automatically adjusts the flow rate of fresh air entering the booth body, filtering the fresh air before it enters the booth body. The temperature and humidity control unit regulates the internal temperature of the booth body through external temperature and humidity control mechanisms. The exhaust unit treats and discharges waste gas, while simultaneously detecting the concentration of the discharged gas. If the concentration repeatedly exceeds the standard, an alarm is triggered, and the waste gas treatment mechanism is inspected and repaired to prevent prolonged excessive emissions, reduce pollution to the surrounding atmosphere, and facilitate environmental protection.

Description

Technical Field

[0001] This invention relates to the field of sanding and spraying booth technology, specifically to an air circulation control system for sanding and spraying booths. Background Technology

[0002] A sanding and painting booth is a specialized workspace used for sanding and painting the surface of objects. Dust and harmful gases are generated during the sanding and painting process, and an air circulation control system is needed to expel these harmful pollutants outdoors or filter and purify them.

[0003] In existing technologies, when air is circulated inside the sanding and painting chamber, the concentration of exhaust gas cannot be detected during the exhaust gas emission process, and there is no alarm to handle multiple instances of concentration failure. As a result, after long-term use, the exhaust gas treatment device is prone to exhaust gas emissions failing to meet standards, and the inability to detect these failures in time will lead to substandard exhaust gas emissions and environmental pollution. Summary of the Invention

[0004] The purpose of this invention is to provide an air circulation control system for a sanding and painting booth, in order to solve the problems mentioned in the background art, such as the inability to detect the concentration of exhaust gas during the exhaust gas emission process and the inability to issue alarms after multiple instances of concentration failure to meet standards.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an air circulation control system for a sanding and painting booth, comprising an air intake unit, a circulating air module, a temperature and humidity control unit, an exhaust unit, a painting booth body, a waste gas treatment mechanism, a waste gas emission mechanism, a fresh air intake mechanism, and a filtration mechanism;

[0006] The air intake unit is used to process the fresh air entering the paint booth body using a fresh air intake mechanism and control the fresh air intake flow rate.

[0007] The circulating air module is used to drive the air to circulate inside the paint spray booth body;

[0008] The temperature and humidity control unit is used to adjust the temperature and humidity of the air according to different process requirements;

[0009] The exhaust unit is used to treat the exhaust gas delivered from the room and discharge the treated exhaust gas.

[0010] The exhaust unit includes an exhaust gas emission module, an exhaust gas treatment module, and an over-limit alarm module;

[0011] The exhaust gas emission module is used to send exhaust gas from inside the paint booth to the exhaust gas treatment mechanism for treatment. The exhaust gas emission mechanism is equipped with a particulate matter detector. Excessive exhaust gas is recirculated to the exhaust gas treatment mechanism for further treatment.

[0012] The waste gas treatment module is used to treat the waste gas sent into the waste gas treatment unit.

[0013] The over-limit alarm module is used to record the number of times the exhaust gas enters the circulation treatment within a specified time. When the number of circulation treatments exceeds the set value, it is determined that there is a fault in the internal equipment of the exhaust gas treatment mechanism and an alarm is triggered.

[0014] Preferably, the air intake unit includes a flow control module and a filtration module;

[0015] The flow control module is used to adjust the amount of fresh air entering the room based on indoor air quality, temperature, and humidity.

[0016] The filtration module is used to install a filtration mechanism at the fresh air inlet to filter impurities and particles in the air.

[0017] Preferably, the adjustment of the fresh air volume entering the room requires the installation of laser scattering particulate matter sensors inside the fresh air intake mechanism and inside the paint booth body to detect particulate matter concentration in different areas, establish an indoor air quality model, use fuzzy logic control to process the input information, and output appropriate fresh air volume adjustment commands by defining fuzzy rules to adjust the fresh air intake flow rate.

[0018] Preferably, the temperature and humidity control unit includes a temperature regulation module and a humidity regulation module;

[0019] The temperature control module is used to connect a temperature control mechanism to the outside of the spray booth body, and to heat and cool the air and adjust the air temperature according to different spraying processes and environmental conditions.

[0020] The humidity control module is used to connect a humidity control mechanism to the outside of the spray booth body, and to perform humidification and dehumidification operations on the air according to different air humidity requirements.

[0021] Preferably, one side of the exhaust gas treatment mechanism is installed on one side of the exhaust gas emission mechanism. The exhaust gas treatment mechanism includes a treatment box. One side of the exhaust gas emission mechanism is installed on the bottom side of the paint booth body. The exhaust gas emission mechanism includes an adsorption port and a third conveying pipe. One end of the third conveying pipe is fixedly connected to one side of the treatment box, and the other end of the third conveying pipe is fixedly connected to an electric three-way valve. One side of the electric three-way valve is fixedly connected to one side of the treatment box. A first fan is fixedly connected to one side of the treatment box. The inlet end of the first fan is fixedly connected to the top of the treatment box, and the outlet end of the first fan is fixedly connected to one end of the electric three-way valve. The other end of the electric three-way valve is fixedly connected to a second conveying pipe.

[0022] Preferably, one end of the adsorption port is fixedly connected to the bottom side of the air intake unit, and one side of the adsorption port is fixedly connected to a first conveying pipe, one end of which is fixedly connected to one side of the processing box.

[0023] Preferably, a partition is fixedly connected inside the processing box, an inclined baffle is fixedly connected to one side of the partition, an adsorption layer is provided above the inclined baffle, one side of the adsorption layer is fixedly connected to the inside of the processing box, and the other side of the adsorption layer is fixedly connected to one side of the partition.

[0024] Preferably, a fixed box is fixedly connected to the bottom of the processing box, one side of the fixed box is fixedly connected to one side of the spray booth body, a water pump is fixedly connected to the outside of the fixed box, a second spray pipe is fixedly connected to the water inlet of the water pump, one end of the second spray pipe is fixedly connected to one side of the fixed box, a first spray pipe is fixedly connected to the water outlet of the second spray pipe, and two third spray pipes are fixedly connected to the outside of the first spray pipe, one of the third spray pipes is fixedly connected to one side of the inclined baffle, and the other third spray pipe is fixedly connected to one side of the partition.

[0025] Preferably, the fresh air intake mechanism is located on one side of the spray booth body. The fresh air intake mechanism includes a first connecting pipe, one end of which is fixedly connected to a second fan. One side of the second fan is fixedly connected to one side of the spray booth body. One end of the second fan is fixedly connected to a second connecting pipe, one end of the second connecting pipe is fixedly connected to a third connecting pipe, and one end of the third connecting pipe is fixedly connected to an air outlet.

[0026] Preferably, the filtration mechanism includes an air inlet pipe, one end of which is fixedly connected to a filter screen, one end of which is fixedly connected to a fixed frame, one end of which is fixedly connected to one end of a first connecting pipe, a second filter plate fixedly connected inside the fixed frame, a first filter plate being provided on one side of the second filter plate, and the outer side of the first filter plate being fixedly connected to the inner side of the fixed frame.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In this invention, the flow control module automatically adjusts the fresh air flow rate entering the spray booth body. Before the fresh air is sent into the spray booth body, it is filtered to prevent impurities in the air from affecting the operation inside the spray booth body. The circulating air module can drive the air to circulate inside the spray booth body. The temperature and humidity control unit regulates the temperature inside the spray booth body through external temperature and humidity control mechanisms. The exhaust unit can treat and discharge exhaust gas, and at the same time detect the concentration of the discharged gas. When the concentration exceeds the standard multiple times, an alarm is triggered, and the exhaust gas treatment mechanism is inspected and repaired to avoid long-term excessive emissions, reduce pollution to the surrounding atmospheric environment, and facilitate environmental protection.

[0029] 2. In this invention, the exhaust gas inside the spray booth is sent into the treatment box. The water pump drives the liquid to spray out from the third spray pipe to remove particulate matter inside the exhaust gas. The two adsorption layers can adsorb volatile organic compounds inside the exhaust gas. An exhaust gas detection device is installed inside the first fan to detect the concentration of pollutants inside the exhaust gas. Excessive exhaust gas is returned to the treatment box for further treatment to prevent substandard exhaust gas from being directly discharged and improve the environmental protection effect.

[0030] 3. In this invention, the second fan drives the outside air to pass through the filter screen, the first filter plate and the second filter plate in sequence to filter the impurities and dust in the air, preventing particulate matter and dust in the air from entering the interior of the spray booth body and affecting the subsequent air circulation equipment and spray painting and sanding work. The air is sent into the interior of the spray booth body and flows downward at a certain speed, which drives the paint mist particles generated during the spraying process to move downward with the airflow, avoiding them from being suspended in the air for a long time. Attached Figure Description

[0031] Figure 1 This is a system block diagram of an air circulation control system for a sanding and painting booth according to the present invention;

[0032] Figure 2 This is a first three-dimensional structural schematic diagram of an air circulation control system for a sanding and painting booth according to the present invention;

[0033] Figure 3 This is a second three-dimensional structural diagram of an air circulation control system for a sanding and painting booth according to the present invention;

[0034] Figure 4 This is a schematic diagram of the connection structure between the waste gas treatment mechanism and the waste gas emission mechanism of the air circulation control system for a sanding and painting booth according to the present invention.

[0035] Figure 5 This is a schematic diagram of the internal connection structure of the exhaust gas treatment mechanism of the air circulation control system for a sanding and painting booth according to the present invention.

[0036] Figure 6 This is a schematic diagram of the connection structure of the fresh air intake mechanism of the air circulation control system for a sanding and painting booth according to the present invention;

[0037] Figure 7 This is a schematic diagram showing the disassembled structure of the filter mechanism in the air circulation control system of a sanding and painting booth according to the present invention.

[0038] In the diagram: 1. Air intake unit; 11. Flow control module; 12. Filtration module; 2. Circulating air module; 3. Temperature and humidity control unit; 31. Temperature regulation module; 32. Humidity regulation module; 4. Exhaust unit; 41. Exhaust gas emission module; 42. Exhaust gas treatment module; 43. Over-limit alarm module; 5. Spray booth body; 6. Exhaust gas treatment mechanism; 61. Treatment box; 62. Fixing box; 63. Water pump; 64. First spray pipe; 65. Second spray pipe; 66. Baffle; 67. Inclined baffle ; 68. Third spray pipe; 69. Adsorption layer; 7. Exhaust gas emission mechanism; 71. Adsorption port; 72. First conveying pipe; 73. Second conveying pipe; 74. Electric three-way valve; 75. First fan; 76. Third conveying pipe; 8. Fresh air intake mechanism; 81. First connecting pipe; 82. Second connecting pipe; 83. Second fan; 84. Third connecting pipe; 85. Air outlet; 9. Filtration mechanism; 91. Air inlet pipe; 92. First filter plate; 93. Second filter plate; 94. Fixing frame; 95. Filter screen. Detailed Implementation

[0039] 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.

[0040] Example 1: Refer to Figure 1 As shown: An air circulation control system for a sanding and painting booth includes an air intake unit 1, a circulating air module 2, a temperature and humidity control unit 3, an exhaust unit 4, a painting booth body 5, an exhaust gas treatment mechanism 6, an exhaust gas emission mechanism 7, a fresh air intake mechanism 8, and a filter mechanism 9.

[0041] The air intake unit 1 is used to process the fresh air entering the paint booth body 5 using the fresh air intake mechanism 8 and control the fresh air intake flow rate.

[0042] The intake unit 1 includes a flow control module 11 and a filter processing module 12;

[0043] The flow control module 11 is used to adjust the amount of fresh air entering the room according to the indoor air quality, temperature and humidity.

[0044] To adjust the amount of fresh air entering the room, laser scattering particulate matter sensors need to be installed inside the fresh air intake mechanism 8 and inside the paint booth body 5 to detect the particulate matter concentration in different areas, establish an indoor air quality model, use fuzzy logic control to process the input information, and output appropriate fresh air volume adjustment commands by defining fuzzy rules to adjust the fresh air intake flow.

[0045] The flow control module 11 can not only adjust the fresh air volume according to the indoor air quality, temperature and humidity, but also link with the working status of the paint booth. By collecting long-term indoor and outdoor environmental data, paint process data and air quality data, it continuously optimizes the fresh air volume adjustment strategy through machine learning algorithms.

[0046] The filtration module 12 is used to install the filter mechanism 9 at the fresh air inlet to filter impurities and particles in the air.

[0047] The circulating air module 2 is used to drive the air to circulate inside the paint spray booth body 5;

[0048] The temperature and humidity control unit 3 is used to adjust the temperature and humidity of the air according to different process requirements;

[0049] The temperature and humidity control unit 3 includes a temperature regulation module 31 and a humidity regulation module 32;

[0050] The temperature control module 31 is used to connect a temperature control mechanism to the outside of the spray booth body 5, and to heat and cool the air according to different spraying processes and environmental conditions to regulate the air temperature.

[0051] The humidity control module 32 is used to connect a humidity control mechanism to the outside of the spray booth body 5, and to perform humidification and dehumidification operations on the air according to different air humidity requirements.

[0052] The exhaust unit 4 is used to treat the exhaust gas delivered from the room and discharge the treated exhaust gas.

[0053] The exhaust unit 4 includes an exhaust emission module 41, an exhaust treatment module 42, and an over-limit alarm module 43;

[0054] The exhaust gas emission module 41 is used to send exhaust gas from inside the paint booth body 5 to the exhaust gas treatment mechanism 6 for treatment through the exhaust gas emission mechanism 7. The exhaust gas emission mechanism 7 is equipped with a particulate matter detector. Excessive exhaust gas is recirculated to the exhaust gas treatment mechanism 6 for treatment.

[0055] The exhaust gas treatment module 42 is used to treat the exhaust gas sent into the exhaust gas treatment unit 6;

[0056] The over-limit alarm module 43 is used to record the number of times the exhaust gas enters the circulation treatment within a specified time. When the number of circulation treatments exceeds the set value, it is determined that there is a fault in the internal equipment of the exhaust gas treatment mechanism 6 and an alarm is triggered.

[0057] The over-limit alarm module 43 not only records the number of times the exhaust gas is recycled, but also collects the operating parameters of each device in the exhaust gas treatment unit 6. When the number of times the exhaust gas is recycled exceeds the set value, it determines whether the equipment is faulty, locates the fault point and provides detailed fault causes and solutions, provides corresponding maintenance measures, and performs replacement of the adsorption layer 69 and checks on the equipment's sealing performance.

[0058] Example 2: Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, one side of the exhaust gas treatment mechanism 6 is installed on one side of the exhaust gas emission mechanism 7. The exhaust gas treatment mechanism 6 includes a treatment box 61. One side of the exhaust gas emission mechanism 7 is installed on the bottom side of the paint booth body 5. The exhaust gas emission mechanism 7 includes an adsorption port 71 and a third conveying pipe 76. One end of the third conveying pipe 76 is fixedly connected to one side of the treatment box 61, and the other end of the third conveying pipe 76 is fixedly connected to an electric three-way valve 74. One side of the electric three-way valve 74 is fixedly connected to one side of the treatment box 61. A first fan 75 is fixedly connected to one side of the treatment box 61. The inlet end of the first fan 75 is fixedly connected to the top of the treatment box 61, and the outlet end of the first fan 75 is fixedly connected to one end of the electric three-way valve 74. The other end of the electric three-way valve 74 is fixedly connected to a second conveying pipe 73. One end of the adsorption port 71 is fixedly connected to the bottom side of the air intake unit 1, and one side of the adsorption port 71 is fixedly connected to a first conveying pipe 72. One end of the first conveying pipe 72 is fixedly connected to... A partition 66 is fixedly connected to one side of the treatment box 61. A baffle 67 is fixedly connected to one side of the partition 66. An adsorption layer 69 is provided above the baffle 67. One side of the adsorption layer 69 is fixedly connected to the inside of the treatment box 61, and the other side of the adsorption layer 69 is fixedly connected to one side of the partition 66. A fixed box 62 is fixedly connected to the bottom of the treatment box 61. One side of the fixed box 62 is fixedly connected to one side of the spray booth body 5. A water pump 63 is fixedly connected to the outside of the fixed box 62. A second spray pipe 65 is fixedly connected to the inlet end of the water pump 63. One end of the second spray pipe 65 is fixedly connected to one side of the fixed box 62. A first spray pipe 64 is fixedly connected to the outlet end of the second spray pipe 65. Two third spray pipes 68 are fixedly connected to the outside of the first spray pipe 64. One third spray pipe 68 is fixedly connected to one side of the baffle 67, and the other third spray pipe 68 is fixedly connected to one side of the partition 66.

[0059] In this embodiment, the first fan 75 operates, and the adsorption port 71 is connected to the bottom end of the spray booth body 5. This allows the exhaust gas inside the spray booth body 5 to be sent from the adsorption port 71 and the first conveying pipe 72 into the treatment box 61. The water pump 63 drives the liquid inside the fixed box 62 to pass sequentially through the second spray pipe 65 and the first spray pipe 64, and then sprayed out from the nozzle on the third spray pipe 68, thereby removing particulate matter from the exhaust gas. Multiple staggered baffles 67 are inclinedly arranged on one side of the partition 66 to slow down the passage of exhaust gas and improve the removal effect on particulate matter. Two adsorption layers 69 are arranged above the baffles 67. The system consists of an activated carbon filter layer and a catalytic combustion filter layer, which can adsorb volatile organic compounds inside the waste gas. The treated waste gas passes through the first fan 75, which is equipped with waste gas detection equipment to detect the concentration of pollutants inside the waste gas. When the emission exceeds the standard, the electric three-way valve 74 operates to connect the first fan 75 to the third conveying pipe 76, so that the waste gas returns to the treatment box 61 for further treatment. When the waste gas treatment meets the standard, the electric three-way valve 74 operates to connect the first fan 75 to the second conveying pipe 73, and the treated waste gas that meets the standard is discharged through the second conveying pipe 73, preventing the waste gas that does not meet the standard from being directly discharged and improving the environmental protection effect.

[0060] Example 3: According to Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, the fresh air intake mechanism 8 is located on one side of the spray booth body 5. The fresh air intake mechanism 8 includes a first connecting pipe 81, one end of which is fixedly connected to a second fan 83. One side of the second fan 83 is fixedly connected to one side of the spray booth body 5. One end of the second fan 83 is fixedly connected to a second connecting pipe 82. One end of the second connecting pipe 82 is fixedly connected to a third connecting pipe 84. One end of the third connecting pipe 84 is fixedly connected to an air outlet 85. The filtration mechanism 9 includes an air inlet pipe 91, one end of which is fixedly connected to a filter screen 95. One end of the filter screen 95 is fixedly connected to a fixed frame 94. One end of the fixed frame 94 is fixedly connected to one end of the first connecting pipe 81. A second filter plate 93 is fixedly connected inside the fixed frame 94. A first filter plate 92 is provided on one side of the second filter plate 93. The outer side of the first filter plate 92 is fixedly connected to the inner side of the fixed frame 94.

[0061] In this embodiment, the second fan 83 drives outside air into the air inlet duct 91. The air passes through the filter screen 95, the first filter plate 92, and the second filter plate 93 in sequence to filter impurities and dust particles in the air, preventing particulate matter and dust in the air from entering the paint spray booth body 5 and affecting the subsequent air circulation equipment and painting and sanding work. The filtered air enters the interior of multiple third connecting pipes 84 arranged in a row through the second connecting pipe 82. Multiple air outlets 85 are connected to the outside of the third connecting pipes 84 to send air into the interior of the paint spray booth body 5. The air flows downward at a certain speed, causing the paint mist particles generated during the painting process to move downward with the airflow, preventing them from being suspended in the air for a long time.

[0062] The operating method and working principle of this device are as follows: With the second fan 83 operating, outside air enters the air inlet pipe 91 and passes sequentially through the filter screen 95, the first filter plate 92, and the second filter plate 93 to filter impurities and dust particles. The air then passes through the second connecting pipe 82, the third connecting pipe 84, and the air outlet 85, and is sent into the interior of the paint spray booth body 5. With the first fan 75 operating, the exhaust gas generated inside the paint spray booth body 5 is sent into the treatment box 61 through the adsorption port 71 and the first conveying pipe 72. The water pump 63 operates, driving the fixed box... The internal liquid 62 is sprayed out from the nozzle on the third spray pipe 68 to remove particulate matter inside the exhaust gas. Multiple staggered inclined baffles 67 can slow down the speed of the exhaust gas. Two adsorption layers 69 are set above the inclined baffles 67 to adsorb volatile organic compounds inside the exhaust gas. The treated exhaust gas passes through the first fan 75. There is an exhaust gas detection device inside the first fan 75 to detect the concentration of pollutants inside the exhaust gas. When the emission exceeds the standard, the exhaust gas returns to the treatment box 61 for further treatment. When the exhaust gas meets the standard, it is discharged through the second conveying pipe 73.

[0063] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An air circulation control system for a sanding and painting booth, characterized in that: It includes an air intake unit (1), a circulating air module (2), a temperature and humidity control unit (3), an exhaust unit (4), a paint spray booth body (5), an exhaust gas treatment mechanism (6), an exhaust gas emission mechanism (7), a fresh air intake mechanism (8), and a filtration mechanism (9); The air intake unit (1) is used to process the fresh air entering the paint spray booth body (5) using the fresh air intake mechanism (8) and control the fresh air intake flow rate; The circulating air module (2) is used to drive air to circulate inside the paint spray booth body (5); The temperature and humidity control unit (3) is used to adjust the temperature and humidity of the air according to different process requirements; The exhaust unit (4) is used to treat the exhaust gas delivered from the room and discharge the treated exhaust gas. The exhaust unit (4) includes an exhaust gas emission module (41), an exhaust gas treatment module (42), and an over-standard alarm module (43). The exhaust gas emission module (41) is used to send exhaust gas from inside the paint booth body (5) to inside the exhaust gas treatment mechanism (6) for treatment through the exhaust gas emission mechanism (7). The exhaust gas emission mechanism (7) is equipped with a particulate matter detector. Excessive exhaust gas is circulated to the inside of the exhaust gas treatment mechanism (6) for treatment. The waste gas treatment module (42) is used to treat the waste gas sent into the waste gas treatment unit (6); The over-limit alarm module (43) is used to record the number of times the exhaust gas enters the circulation treatment within a specified time. When the number of circulation treatments exceeds the set value, it is determined that there is a fault in the internal equipment of the exhaust gas treatment mechanism (6) and an alarm is triggered. The exhaust gas treatment mechanism (6) is installed on one side of the exhaust gas emission mechanism (7). The exhaust gas treatment mechanism (6) includes a treatment box (61). The exhaust gas emission mechanism (7) is installed on one side of the spray booth body (5). The exhaust gas emission mechanism (7) includes an adsorption port (71) and a third conveying pipe (76). One end of the third conveying pipe (76) is fixedly connected to one side of the treatment box (61). The other end of the third conveying pipe (76) is fixedly connected to an electric three-way valve (74). One side of the electric three-way valve (74) is fixedly connected to one side of the treatment box (61). One side of the treatment box (61) is fixedly connected to a first fan (75). The inlet end of the first fan (75) is fixedly connected to the top of the treatment box (61). The outlet end of the first fan (75) is fixedly connected to one end of the electric three-way valve (74). The other end of the electric three-way valve (74) is fixedly connected to a second conveying pipe (73). The processing box (61) is fixedly connected to a partition (66), and a sloping baffle (67) is fixedly connected to one side of the partition (66). An adsorption layer (69) is provided above the sloping baffle (67). One side of the adsorption layer (69) is fixedly connected to the inside of the processing box (61), and the other side of the adsorption layer (69) is fixedly connected to one side of the partition (66).

2. The air circulation control system for a sanding and painting booth according to claim 1, characterized in that: The intake unit (1) includes a flow control module (11) and a filter processing module (12). The flow control module (11) is used to adjust the amount of fresh air entering the room according to the indoor air quality, temperature and humidity. The filtration module (12) is used to install a filtration mechanism (9) at the fresh air inlet to filter impurity particles in the air.

3. The air circulation control system for a sanding and painting booth according to claim 2, characterized in that: The adjustment of the fresh air volume entering the room requires the installation of laser scattering particulate matter sensors inside the fresh air intake mechanism (8) and inside the paint spraying chamber body (5) to detect the particulate matter concentration in different areas, establish an indoor air quality model, use fuzzy logic control to process the input information, and output appropriate fresh air volume adjustment commands by defining fuzzy rules to adjust the fresh air intake flow rate.

4. The air circulation control system for a sanding and painting booth according to claim 1, characterized in that: The temperature and humidity control unit (3) includes a temperature adjustment module (31) and a humidity adjustment module (32). The temperature control module (31) is used to connect a temperature control mechanism to the outside of the spray booth body (5) to heat and cool the air according to different spraying processes and environmental conditions, and to regulate the air temperature. The humidity control module (32) is used to connect a humidity control mechanism to the outside of the spray booth body (5) to perform humidification and dehumidification operations on the air according to different air humidity requirements.

5. The air circulation control system for a sanding and painting booth according to claim 1, characterized in that: One end of the adsorption port (71) is fixedly connected to the bottom side of the air intake unit (1), and one side of the adsorption port (71) is fixedly connected to the first delivery pipe (72), and one end of the first delivery pipe (72) is fixedly connected to one side of the processing box (61).

6. The air circulation control system for a sanding and painting booth according to claim 1, characterized in that: The bottom of the processing box (61) is fixedly connected to a fixed box (62). One side of the fixed box (62) is fixedly connected to one side of the spray booth body (5). A water pump (63) is fixedly connected to the outside of the fixed box (62). The water inlet of the water pump (63) is fixedly connected to a second spray pipe (65). One end of the second spray pipe (65) is fixedly connected to one side of the fixed box (62). The water outlet of the second spray pipe (65) is fixedly connected to a first spray pipe (64). The outside of the first spray pipe (64) is fixedly connected to two third spray pipes (68). One of the third spray pipes (68) is fixedly connected to one side of the inclined baffle (67), and the other third spray pipe (68) is fixedly connected to one side of the partition (66).

7. The air circulation control system for a sanding and painting booth according to claim 1, characterized in that: The fresh air intake mechanism (8) is located on one side of the spray booth body (5). The fresh air intake mechanism (8) includes a first connecting pipe (81). One end of the first connecting pipe (81) is fixedly connected to a second fan (83). One side of the second fan (83) is fixedly connected to one side of the spray booth body (5). One end of the second fan (83) is fixedly connected to a second connecting pipe (82). One end of the second connecting pipe (82) is fixedly connected to a third connecting pipe (84). One end of the third connecting pipe (84) is fixedly connected to an air outlet (85).

8. The air circulation control system for a sanding and painting booth according to claim 1, characterized in that: The filtration mechanism (9) includes an air inlet pipe (91), one end of which is fixedly connected to a filter screen (95), one end of which is fixedly connected to a fixed frame (94), one end of which is fixedly connected to one end of a first connecting pipe (81), and a second filter plate (93) is fixedly connected inside the fixed frame (94). A first filter plate (92) is provided on one side of the second filter plate (93), and the outer side of the first filter plate (92) is fixedly connected to the inner side of the fixed frame (94).

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