A dust removal device for paint production

Abstract

This utility model relates to the field of dust removal technology in paint production, and is a dust removal device for paint production. It includes a negative pressure main pipe, a negative pressure main pipe 2, a bag filter dust collector, a dust removal fan, an activated carbon adsorption box, a UV photolysis purifier, a blower, and a return air duct. The negative pressure main pipe 1 is equipped with at least two negative pressure branch pipes 1. This utility model has a reasonable and compact structure and is easy to use. It uses the negative pressure main pipe 1 to collect dust from the equipment to be collected, sending it to the bag filter dust collector for dust removal. The negative pressure main pipe 2 absorbs harmful gases, which are then sequentially sent through the exhaust duct and dust removal fan to the activated carbon adsorption box and the UV photolysis purifier for dust removal and purification. Finally, the air is returned to each workshop through the return air duct by the blower, forming an air circulation system and achieving effective dust removal and purification. It features good system circulation, good dust removal effect, low energy consumption, high working efficiency, and good dust removal and waste gas treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology in paint production, specifically a dust removal device for paint production. Background Technology

[0002] Latex paint is a type of water-based coating formulated with synthetic resin emulsion as a base, along with pigments, fillers, and various additives. Also known as synthetic resin emulsion paint, it is a type of organic coating and boasts advantages such as easy application, rapid drying, water resistance, good scrub resistance, and environmental friendliness with no odor. During the production and preparation of latex paint, dust pollution occurs in the workshop, which is currently typically removed using a dust removal system.

[0003] Chinese patent document CN209302452U discloses a dust removal system for a latex paint production workshop, which includes a workshop, a first dust collection hood, an exhaust fan, a washing tank, a purification tank, a second dust collection hood, and a blower. Paint-making equipment is located in the center of the workshop. The first dust collection hood is positioned directly above the paint-making equipment. The first dust collection hood is connected to one end of the exhaust fan via a pipe. The other end of the exhaust fan is connected to the inlet of the washing tank via a pipe. The outlet of the washing tank is connected to the inlet of the purification tank via a pipe. The outlet of the purification tank is connected to one end of the blower via a pipe. The other end of the blower is connected to the second dust collection hood via a pipe. The exhaust fan is fixedly installed on the top of the workshop. The washing tank, purification tank, and blower are all located on the outer side of the workshop. While this dust removal system can create air circulation to remove dust in latex paint production workshops, it presents the following problems in actual use: 1. In workshops with multiple dispersing or grinding devices, the air collection hood is far from the dust-generating area, and the airflow from the second hood is relatively dispersed. The airflows from both hoods impact each other, causing some dust to fly around the workshop and affecting the respiratory health of operators; 2. Equipment such as water washing tanks generates wastewater and has high energy consumption, making the equipment prone to clogging and requiring frequent maintenance, which significantly affects the efficiency of dust removal; 3. It cannot handle volatile organic compounds generated during latex paint production, and harmful gases cannot be purified, posing safety hazards and potentially harming the health of operators. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a dust removal device for paint production, which overcomes the shortcomings of the prior art. It can effectively solve the problems of poor dust removal and exhaust gas treatment effect, low dust removal efficiency, inability to treat harmful gases such as volatile organic compounds, and safety hazards in the existing dust removal system of latex paint production workshop.

[0005] The technical solution adopted by this utility model is as follows: a dust removal device for paint production, comprising a negative pressure main pipe 1, a negative pressure main pipe 2, a bag filter dust collector, a dust removal fan, an activated carbon adsorption box, a UV photolysis purifier, a blower, and a return air duct. The negative pressure main pipe 1 is provided with at least two negative pressure branch pipes 1, the dust suction ports of which are respectively connected to the workshop where the dispersion equipment or grinding equipment is located. The negative pressure main pipe 2 is provided with at least two negative pressure branch pipes 2, the dust suction ports of which are respectively connected to the workshop where the paint mixing and color matching equipment or the filling equipment is located. The bag filter dust collector is equipped with a powder... The dust inlet and filter outlet are connected as follows: the outlet of negative pressure main pipe one is connected to the dust inlet of the bag filter; the filter outlet of the bag filter is connected to the inlet of the dust collector fan via an exhaust pipe; the outlet of negative pressure main pipe two is connected to the exhaust pipe; the outlet of the dust collector fan is connected to the inlet of the activated carbon adsorption box; the outlet of the activated carbon adsorption box is connected to the harmful gas inlet of the UV photolysis purifier; the treated gas outlet of the UV photolysis purifier is connected to the inlet of the blower; the outlet of the blower is connected to the return air duct; and the outlet of the return air duct can be connected to the aforementioned workshops.

[0006] The following are further optimizations and / or improvements to the technical solution applied for:

[0007] Furthermore, as a preferred embodiment, the baghouse dust collector includes a frame, a dust filter chamber, dust collection bags, a dust collection side door, a dust collection hopper, a dust removal door, a dust discharge solenoid valve, a dust discharge pipe, and a dust collection box. Left and right side plates are fixed to the upper ends of the frame, forming the dust filter chamber. Several dust collection bags are arranged in an array within the dust filter chamber, passing between the dust inlet and the filtered air outlet. The surface of each dust collection bag has a mesh structure that allows only air to pass through. A dust collection side door is located at the lower part of the right side plate of the frame. A dust collection hopper, wider at the top and narrower at the bottom, is located below the dust filter chamber. A dust removal door is located at the lower front side of the dust collection hopper. A dust discharge pipe with a dust discharge solenoid valve is located at the lower end of the dust collection hopper. A detachable dust collection box is placed on the frame below the dust discharge pipe. The dust collection box is connected to the dust filter chamber via the dust discharge pipe and the dust collection hopper, and is capable of collecting dust falling from the dust collection bags.

[0008] Furthermore, as a preferred embodiment, the bag filter also includes a mounting base, a connecting pipe, a water mist spray pipe, and a water stop valve. Mounting bases are fixed on the left and right sides of the upper rear part of the frame, and the left and right ends of the connecting pipe are fixed on the corresponding mounting bases. A water stop valve is provided at one end of the connecting pipe, and several water mist spray pipes are evenly spaced at the upper end of the connecting pipe. The front end of the water mist spray pipe passes through the rear plate of the upper part of the dust filter chamber and extends into the dust filter chamber. The water mist spray pipe can spray water onto the dust filter bag at the corresponding position.

[0009] Furthermore, as a preferred embodiment, the activated carbon adsorption box includes an adsorption box body, several filter racks and trays connected in sequence, the filter racks are fixedly placed inside the adsorption box body, and several sets of detachable trays for placing activated carbon are arranged in sequence from top to bottom on the filter racks. The bottom of the trays is a mesh structure that allows air to pass through only, and the adsorption box body is provided with a pull door for easy replacement of the trays.

[0010] Furthermore, preferably, a dust collection device is provided in the workshop where the dispersing or grinding equipment is located. The dust collection device has a dust collection hood with an air inlet on its canister flange. The air inlet of the dust collection hood is connected to the dust suction port of the negative pressure branch pipe. The dust collection hood includes a spherical crown, a cylindrical body, an annular baffle, a crown pin, a fan-shaped guard plate, and radial support rods. The lower end of the spherical crown is integrated with the upper end of the cylindrical body. An annular baffle is fixed to the lower end of the cylindrical body. The inner diameter of the annular baffle is larger than that of the dust collection device. The outer diameter of the can lid flange is specified. At least three radial support rods are fixed on the inner wall of the cover cylinder. The inner end of the radial support rods can sit on the upper end of the can lid flange of the dust collection equipment. A fan-shaped opening is provided on the spherical crown of the cover corresponding to the feed inlet of the dust collection equipment. A spherical crown pin is installed on the upper end of the spherical crown. A protective plate guide groove is provided on the upper end of the cover cylinder corresponding to the position of the fan-shaped opening. The upper end of the fan-shaped protective plate is rotatably installed on the spherical crown pin. The lower end of the fan-shaped protective plate is installed in the protective plate guide groove and can slide. A protective plate handle is fixed on the middle of the outer side of the fan-shaped protective plate.

[0011] Furthermore, as a preferred embodiment, the dust removal fan, activated carbon adsorption box, UV photolysis purifier, and blower are equipped with rain shelters at their upper ends.

[0012] This utility model has a reasonable and compact structure and is easy to use. It uses a negative pressure main pipe to suck up the dust from the dust collection equipment and send it to a bag filter for dust removal. A second negative pressure main pipe absorbs harmful gases and then sends them through an exhaust pipe and a dust removal fan to an activated carbon adsorption box and a UV photolysis purifier for dust removal and purification. Finally, the air is returned to each workshop through a return air duct by a blower, which can form an air circulation and achieve effective dust removal and purification. It has the characteristics of good system circulation, good dust removal effect, low energy consumption, high working efficiency, and good dust removal and exhaust gas treatment effect. Attached Figure Description

[0013] Figure 1 These are schematic diagrams of the main structure of embodiments 1-4 and embodiment 6 of this utility model;

[0014] Figure 2 This is a schematic diagram of the dust collection hood device in Embodiment 5 of this utility model.

[0015] Legend: 1 is negative pressure main pipe one, 101 is negative pressure branch pipe one, 2 is negative pressure main pipe two, 201 is negative pressure branch pipe two, 3 is bag filter dust collector, 301 is dust gas inlet, 302 is filtered gas outlet, 303 is frame, 304 is dust filter chamber, 305 is dust collection bag, 306 is dust collection side door, 307 is dust collection hopper, 308 is dust removal door, 309 is dust discharge solenoid valve, 310 is dust discharge pipe, 311 is dust collection box, 4 is dust collection fan, 5 is activated carbon adsorption box, 500 is adsorption box body, 501 is filter frame, 5 02 is the tray, 6 is the UV photolysis purifier, 7 is the blower, 8 is the return air duct, 9 is the exhaust duct, 10 is the dust collection hood, 1000 is the air inlet, 1001 is the spherical crown of the cover, 1002 is the cylindrical body of the cover, 1003 is the annular baffle, 1004 is the spherical crown pin, 1005 is the fan-shaped guard plate, 1006 is the radial support rod, 1007 is the fan-shaped opening, 1008 is the guard plate guide groove, 1009 is the guard plate handle, 11 is the equipment to be vacuumed, 12 is the rain shelter, d is the outer diameter of the flange, and D is the inner diameter of the ring. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1:

[0018] As attached Figure 1-2As shown, this utility model provides a dust removal device for paint production, including a negative pressure main pipe 1, a negative pressure main pipe 2, a bag filter dust collector 3, a dust removal fan 4, an activated carbon adsorption box 5, a UV photolysis purifier 6, a blower 7, and a return air duct 8. The negative pressure main pipe 1 is equipped with at least two negative pressure branch pipes 101, the dust inlets of which are connected to the workshop where the dispersion equipment or grinding equipment is located. The negative pressure main pipe 2 is equipped with at least two negative pressure branch pipes 201, the dust inlets of which are connected to the workshop where the paint mixing and color matching equipment or filling equipment is located. The bag filter dust collector 3 is equipped with a dust inlet 3. 01 and filter gas outlet 302, the outlet of negative pressure main pipe 1 is connected to the dust gas inlet 301 of bag dust collector 3, the filter gas outlet 302 of bag dust collector 3 is connected to the air inlet of dust collector fan 4 through induced draft pipe 9, the outlet of negative pressure main pipe 2 is connected to induced draft pipe 9, the outlet of dust collector fan 4 is connected to the air inlet of activated carbon adsorption box 5, the outlet of activated carbon adsorption box 5 is connected to the harmful gas inlet of UV photolysis purifier 6, the treated gas outlet of UV photolysis purifier 6 is connected to the air inlet of blower 7, the outlet of blower 7 is connected to return air duct 8, and the outlet of return air duct 8 can be connected to the above-mentioned workshops. This invention uses a negative pressure main pipe 1 to collect dust from equipment with high dust levels, such as dispersion or grinding equipment, and then sends the collected dust to a bag filter 3 for dust removal. A second negative pressure main pipe 2 is used to collect harmful gases from workshops with less dust but higher levels of harmful gases, such as paint mixing or filling equipment. The gases are then sequentially sent to an activated carbon adsorption box 5 via an exhaust pipe 9 and a dust removal fan 4 for dust removal and purification. A UV photolysis purifier 6 further purifies volatile organic compounds (VOCs) and other harmful gases. The invention employs a categorized and graded treatment method for dusty exhaust gases generated by key equipment in the workshop, resulting in a more balanced workload for each component and better air purification within the workshop. Finally, the exhaust gases are returned to each workshop via a blower 7 and a return air duct 8, creating air circulation and achieving effective dust removal. The system features good circulation, excellent dust removal effect, low energy consumption, high working efficiency, and good dust removal and exhaust gas treatment effects. The activated carbon adsorption box 5 is a well-known and widely used technology. Its interior uses honeycomb activated carbon, which has a large specific surface area and microporous structure. It can efficiently adsorb pollutants in waste gas, with low resistance, no energy consumption, and high purification efficiency. It is widely used in the waste gas treatment of latex paint production workshops. It can effectively remove harmful gases and dust generated during the production process, ensuring that the emitted gas meets national emission standards and protecting the environment and the health of workers.The UV photolysis purifier 6 utilizes existing, publicly known technology. It employs high-energy UV ultraviolet light beams to irradiate harmful gases, breaking down gas molecules and causing them to react with ozone to produce harmless substances such as carbon dioxide and water. This process effectively breaks down large molecules into smaller ones, efficiently removing major pollutants such as volatile organic compounds (VOCs), inorganic substances, hydrogen sulfide, and ammonia. It boasts advantages such as high-efficiency deodorization, no need for additives, strong adaptability, and low operating costs. In practical use, negative pressure fans can be installed in each workshop. The return air duct 8 can be connected to the negative pressure fan via a pipeline, and the purified air, along with fresh air, can be delivered to each workshop for even better results.

[0019] Example 2:

[0020] As attached Figure 1-2 As shown, the difference between this embodiment and Embodiment 1 is that the bag filter 3 includes a frame 303, a dust filter chamber 304, dust collection bags 305, a dust collection side door 306, a dust collection hopper 307, a dust removal door 308, a dust discharge solenoid valve 309, a dust discharge pipe 310, and a dust collection box 311. Left and right side plates are fixed to the upper ends of the frame 303, forming the dust filter chamber 304. Several dust collection bags 305 are arranged in an array within the dust filter chamber 304, passing between the dust gas inlet 301 and the filtered gas outlet 302. The surface of each dust collection bag 305 is only... The frame 303 has a grid-like structure for air passage. The lower part of the right side plate of the frame 303 is provided with a dust removal side door 306. The dust collection hopper 307, which is larger at the top and smaller at the bottom, is located below the dust filter chamber 304. The lower front side of the dust collection hopper 307 is provided with a dust removal door 308. The lower end of the dust collection hopper 307 is provided with a dust discharge pipe 310 with a dust discharge solenoid valve 309. A detachable dust collection box 311 is placed on the frame 303 below the dust discharge pipe 310. The dust collection box 311 is connected to the dust filter chamber 304 through the dust discharge pipe 310 and the dust collection hopper 307 and can collect the dust falling from the dust collection bag 305. The dust collection bag 305 filters dust particles and collects them inside the bag. The dust inside the bag falls through the dust collection hopper 307 and the dust discharge pipe 310 into the dust collection box 311. The dust collection bag 305 has a mesh structure to ensure the air passage capacity. The dust collection box 311 is designed to be detachable for easy removal to collect dust for subsequent processing and utilization. The dust collection side door 306 on the outside of the dust filter chamber 304 can be opened for maintenance and cleaning of the inside of the dust filter chamber 304. The dust collection hopper 307 can be easily cleaned through the dust cleaning door 308, making it more convenient to use.

[0021] Example 3:

[0022] The difference between this embodiment and embodiments 1 and 2 is that, according to actual needs, the bag filter 3 also includes a mounting base, a connecting pipe, a water mist spray pipe, and a water stop valve. Mounting bases are fixed to the upper left and right sides of the rear of the frame 303, and the left and right ends of the connecting pipe are fixed to the corresponding mounting bases. One end of the connecting pipe is equipped with a water stop valve, and several water mist spray pipes are evenly spaced at the upper end of the connecting pipe. The front end of each water mist spray pipe passes through the rear plate of the upper part of the dust filter chamber 304 and extends into the dust filter chamber 304. The water mist spray pipe can spray water onto the dust filter bags 305 at corresponding positions. The water mist spray pipes can spray the dust filter bags 305 intermittently, causing the dust in the dust filter chamber 304 to fall, thus better collecting the dust. Simultaneously, it can prevent the accumulation of static charge when the concentration of organic pigments or fine particulate dust is too high, achieving explosion-proof protection and better safety. The bag filter dust collector 3 with water mist nozzle is a prior art technology, and its structure is disclosed in Chinese Patent No. ZL201920923524.6, entitled "A Utility Model Patent for a Dust Explosion-proof Bag Filter".

[0023] Example 4:

[0024] As attached Figure 1-2 As shown, the difference between this embodiment and embodiments 1-3 is that the activated carbon adsorption box 5 includes an adsorption box body 500, several filter racks 501 connected in sequence, and trays 502. The filter racks 501 are fixedly placed inside the adsorption box body 500. Several sets of detachable trays 502 for placing activated carbon are arranged sequentially from top to bottom on the filter racks 501. The bottom of each tray 502 has a mesh structure that allows only air to pass through. The adsorption box body 500 is provided with a sliding door for easy replacement of the trays 502. The activated carbon adsorption box 5 can further filter dust and exhaust gas. By opening the sliding door, the trays 502 can be easily pulled out for replacement of the activated carbon. After the activated carbon on the trays 502 is removed, it can be reused after being processed by a regeneration system, making it more economical and environmentally friendly.

[0025] Example 5:

[0026] As attached Figure 1-2As shown, the difference between this embodiment and embodiments 1-4 is that a dust collection device 11 is provided in the workshop where the dispersion equipment or grinding equipment is located. The dust collection device 11 has a dust collection hood device 10 with an air collection port 1000 on its can lid flange. The air collection port 1000 of the dust collection hood device 10 is connected to the dust collection port of the negative pressure branch pipe 101. The dust collection hood device 10 includes a spherical cap 1001, a cylindrical body 1002, an annular baffle 1003, a spherical cap pin 1004, a fan-shaped guard plate 1005, and radial support rods 1006. The lower end of the spherical cap 1001 is integrated with the upper end of the cylindrical body 1002. The lower end of the cylindrical body 1002 is fixed with an annular baffle 1003. The inner diameter D of the annular baffle 1003 is larger than that of the dust collection device 1002. The outer diameter d of the can lid flange of the equipment 11 is provided. At least three radial support rods 1006 are fixed on the inner wall of the cover cylinder 1002. The inner end of the radial support rods 1006 can sit on the upper end of the can lid flange of the equipment 11 to be vacuumed. A fan-shaped opening 1007 is provided on the cover spherical crown 1001 corresponding to the feed inlet of the equipment 11 to be vacuumed. A spherical crown pin 1004 is installed on the upper end of the cover spherical crown 1001. A protective plate guide groove 1008 is provided on the upper end of the cover cylinder 1002 corresponding to the position of the fan-shaped opening 1007. The upper end of the fan-shaped protective plate 1005 is rotatably installed on the spherical crown pin 1004. The lower end of the fan-shaped protective plate 1005 is installed in the protective plate guide groove 1008 and can slide. A protective plate handle 1009 is fixed on the middle of the outer side of the fan-shaped protective plate 1005. The fan-shaped guard plate 1005 can be easily pulled by the guard plate handle 1009 to open and close the fan-shaped opening 1007. When it is necessary to add raw materials into the dust collection equipment 11, pull the fan-shaped guard plate 1005 to the right. The fan-shaped guard plate 1005 slides along the guard plate guide groove 1008 and opens the fan-shaped opening 1007. After the raw materials are added, quickly pull the fan-shaped guard plate 1005 to the left to close the fan-shaped opening 1007. The generated dust enters the negative pressure branch pipe 101 and the negative pressure main pipe 1 through the air collection port 1000 with the negative pressure air, and is finally collected by the bag filter dust collector 3 to achieve dust removal.

[0027] Example 6:

[0028] As attached Figure 1-2 As shown, the difference between this embodiment and embodiments 1-5 is that a rain shelter 12 is provided at the top of the dust removal fan 4, activated carbon adsorption box 5, UV photolysis purifier 6, and blower 7. The rain shelter 12 can block rain and snow water, effectively extending the service life of the equipment.

[0029] In the description of this application, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] This utility model is described in the appendix to the specification. Figure 1 For reference purposes, directional terms such as "up," "down," "left," "right," "top," and "bottom" are used only to better and more clearly explain and understand this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] The preferred embodiments of this utility model have been described above, but should not be construed as limiting the claims. This utility model is not limited to the above embodiments, and its specific structure may vary. Any simple modifications, equivalent changes, and substitutions made to the above embodiments based on the technical essence of this utility model are still within the protection scope of this utility model.

Claims

1. A dust removal device for paint production, characterized by: The system includes a negative pressure main pipe 1, a negative pressure main pipe 2, a bag filter dust collector, a dust collector fan, an activated carbon adsorption box, a UV photolysis purifier, a blower, and a return air duct. The negative pressure main pipe 1 has at least two negative pressure branch pipes 1, with the dust inlets of each branch pipe 1 connected to the workshop containing the dispersion or grinding equipment. The negative pressure main pipe 2 has at least two negative pressure branch pipes 2, with the dust inlets of each branch pipe 2 connected to the workshop containing the paint mixing or filling equipment. The bag filter dust collector has a dust inlet and a filtered air outlet. The outlet of pipe one is connected to the dust gas inlet of the bag filter dust collector. The filter gas outlet of the bag filter dust collector is connected to the air inlet of the dust collector fan through the induced draft pipe. The outlet of negative pressure main pipe two is connected to the induced draft pipe. The outlet of the dust collector fan is connected to the air inlet of the activated carbon adsorption box. The outlet of the activated carbon adsorption box is connected to the harmful gas inlet of the UV photolysis purifier. The treated gas outlet of the UV photolysis purifier is connected to the air inlet of the blower. The outlet of the blower is connected to the return air duct. The outlet of the return air duct can be connected to the above-mentioned workshops.

2. The dust removal device for paint production according to claim 1, characterized in that: The baghouse dust collector includes a frame, a dust filter chamber, dust collection bags, a dust collection side door, a dust collection hopper, a dust removal door, a dust discharge solenoid valve, a dust discharge pipe, and a dust collection box. Left and right side plates are fixed to the upper ends of the frame, forming the dust filter chamber. Several dust collection bags are arranged in an array within the dust filter chamber, passing between the dust inlet and the filtered air outlet. The surface of each dust collection bag has a mesh structure that allows only air to pass through. A dust collection side door is located at the lower part of the right side plate of the frame. A dust collection hopper, wider at the top and narrower at the bottom, is located below the dust filter chamber. A dust removal door is located at the lower front side of the dust collection hopper. A dust discharge pipe with a dust discharge solenoid valve is located at the lower end of the dust collection hopper. A detachable dust collection box is placed on the frame below the dust discharge pipe. The dust collection box is connected to the dust filter chamber via the dust discharge pipe and the dust collection hopper, and can collect dust falling from the dust collection bags.

3. The dust removal device for paint production according to claim 2, characterized in that: The bag filter dust collector also includes a mounting base, a connecting pipe, a water mist spray pipe, and a water stop valve. Mounting bases are fixed on the left and right sides of the upper rear part of the frame, and the left and right ends of the connecting pipe are fixed on the corresponding mounting bases. A water stop valve is provided at one end of the connecting pipe. Several water mist spray pipes are evenly spaced at the upper end of the connecting pipe. The front end of the water mist spray pipe passes through the rear plate of the upper part of the dust filter chamber and extends into the dust filter chamber. The water mist spray pipe can spray water above the dust collection bag at the corresponding position.

4. The dust removal device for paint production according to claim 1 or 2 or 3, characterized in that: The activated carbon adsorption box includes an adsorption box body, several filter racks and trays connected in sequence. The filter racks are fixedly placed inside the adsorption box body. Several sets of detachable trays for placing activated carbon are arranged on the filter racks from top to bottom. The bottom of the trays is a mesh structure that allows air to pass through only. The adsorption box body is provided with a pull door for easy replacement of the trays.

5. The dust removal device for paint production according to claim 1 or 2 or 3, characterized in that: The workshop containing the dispersing or grinding equipment is equipped with a dust collection device. The dust collection device has a dust collection hood with an air inlet on its tank cover flange. The air inlet of the dust collection hood is connected to the suction port of a negative pressure branch pipe. The dust collection hood includes a spherical cap, a cylindrical body, an annular baffle, a spherical cap pin, a fan-shaped protective plate, and radial support rods. The lower end of the spherical cap is integrally connected to the upper end of the cylindrical body. An annular baffle is fixed to the lower end of the cylindrical body. The inner diameter of the annular baffle is larger than the diameter of the tank cover flange of the dust collection device. The flange outer diameter is specified. At least three radial support rods are fixed on the inner wall of the casing cylinder. The inner ends of the radial support rods can sit on the upper end of the can cover flange of the dust collection equipment. A fan-shaped opening is provided on the spherical crown of the casing corresponding to the feed inlet of the dust collection equipment. A spherical crown pin is installed on the upper end of the spherical crown of the casing. A protective plate guide groove is provided on the upper end of the casing cylinder corresponding to the position of the fan-shaped opening. The upper end of the fan-shaped protective plate is rotatably installed on the spherical crown pin. The lower end of the fan-shaped protective plate is installed in the protective plate guide groove and can slide. A protective plate handle is fixed on the middle of the outer side of the fan-shaped protective plate.

6. The paint production dedusting device according to claim 4, characterized in that: The workshop containing the dispersing or grinding equipment is equipped with a dust collection device. The dust collection device has a dust collection hood with an air inlet on its tank cover flange. The air inlet of the dust collection hood is connected to the suction port of a negative pressure branch pipe. The dust collection hood includes a spherical cap, a cylindrical body, an annular baffle, a spherical cap pin, a fan-shaped protective plate, and radial support rods. The lower end of the spherical cap is integrally connected to the upper end of the cylindrical body. An annular baffle is fixed to the lower end of the cylindrical body. The inner diameter of the annular baffle is larger than the diameter of the tank cover flange of the dust collection device. The flange outer diameter is specified. At least three radial support rods are fixed on the inner wall of the casing cylinder. The inner ends of the radial support rods can sit on the upper end of the can cover flange of the dust collection equipment. A fan-shaped opening is provided on the spherical crown of the casing corresponding to the feed inlet of the dust collection equipment. A spherical crown pin is installed on the upper end of the spherical crown of the casing. A protective plate guide groove is provided on the upper end of the casing cylinder corresponding to the position of the fan-shaped opening. The upper end of the fan-shaped protective plate is rotatably installed on the spherical crown pin. The lower end of the fan-shaped protective plate is installed in the protective plate guide groove and can slide. A protective plate handle is fixed on the middle of the outer side of the fan-shaped protective plate.

7. The dust removal device for paint production according to claim 1 or 2 or 3, characterized in that: The dust removal fan, activated carbon adsorption box, UV photolysis purifier and blower are equipped with rain shelters at their top ends.

8. The dust removal device for paint production according to claim 4, characterized in that: The dust removal fan, activated carbon adsorption box, UV photolysis purifier and blower are equipped with rain shelters at their top ends.

9. The dust removal device for paint production according to claim 5, characterized in that: The dust removal fan, activated carbon adsorption box, UV photolysis purifier and blower are equipped with rain shelters at their top ends.

10. The dust removal device for paint production according to claim 6, characterized in that: The dust removal fan, activated carbon adsorption box, UV photolysis purifier and blower are equipped with rain shelters at their top ends.

Images