Dust collecting device of powder spraying cabinet

Abstract

The utility model relates to a dust collecting device of a powder spraying cabinet, which comprises a machine frame, a filtering device, a negative pressure device, an air collecting device and a recycling device, and the filtering device, the negative pressure device, the air collecting device and the recycling device are arranged on the machine frame and communicated with the inner circumference of the powder spraying cabinet. The negative pressure device is used for forming negative pressure in the powder spraying cabinet, so that dust-containing waste gas passes through the filtering device and the air collecting device to the recycling device, and meanwhile, the air pressure balance in the powder spraying cabinet is ensured; the filtering device is located below the negative pressure device, can move front and back relative to the rack and comprises a filtering element; the negative pressure device is used for filtering dust-containing waste gas extracted from the powder spraying cabinet and capturing dust particles, and the air collecting device is located at the left end of the negative pressure device, comprises an air collecting pipe and is used for guiding air flow filtered by the filter element and further uniformly distributing and collecting the air flow so as to improve the dust collecting efficiency of the recovery device. According to the utility model, efficient dust collection and purification, convenient equipment maintenance and optimized airflow diversion and dust collection can be realized.

Description

Technical Field

[0001] This utility model relates to the field of powder coating cabinet technology, and specifically to a dust collection device for a powder coating cabinet. Background Technology

[0002] In industrial production, powder coating is widely used in many fields, such as metal products, automotive parts, and furniture. Powder coating is a surface treatment method in which powder coating is sprayed onto the surface of a workpiece through a spray gun, and then cured by heating to form a coating. However, the powder coating process generates a large amount of dust-containing waste gas, which can cause many serious problems if not effectively treated.

[0003] In existing technologies, dust collection and purification within powder coating booths face numerous challenges. On one hand, dust easily accumulates inside the booth, affecting not only the powder coating effect and leading to unstable coating quality (such as uneven thickness and increased surface roughness), but also increasing the risk of fire and explosion. This is because dust in powder coatings, at certain concentrations, can ignite or even explode when exposed to ignition sources or high temperatures, posing a significant threat to personnel safety and production equipment.

[0004] On the other hand, traditional dust treatment devices have significant shortcomings in terms of purification efficiency, ease of maintenance, and overall performance. Many powder coating booths' exhaust gas treatment systems, lacking effective airflow guidance and negative pressure control, cannot fully and promptly extract dust-laden exhaust gas, causing some dust to escape into the workshop environment, severely polluting the working environment and endangering the health of operators. Operators exposed to high concentrations of dust for extended periods are prone to respiratory diseases such as pneumoconiosis.

[0005] Meanwhile, traditional filtration devices present numerous inconveniences in terms of filter element replacement and maintenance. After a period of use, filter elements require frequent replacement due to dust clogging. However, existing equipment often requires shutdown and large-scale disassembly for filter element replacement, which not only consumes a lot of time, reduces production efficiency, and increases production costs, but the frequent disassembly and installation process may also damage the equipment, affecting its service life and stability.

[0006] Furthermore, traditional dust collection devices are inefficient at collecting dust, easily leading to dust residue and secondary pollution. Inadequate design in airflow guidance and dust collection causes some dust to fail to fall accurately into the collection bin, instead scattering inside the equipment or in the surrounding environment, wasting powder coating resources and exacerbating environmental pollution. Moreover, the entire dust collection device struggles to balance mobility and stability, making it impossible to flexibly adjust the equipment's position according to production needs, or ensuring stable operation during work, thus affecting dust collection effectiveness. Utility Model Content

[0007] To address the problems mentioned in the background section, this invention provides a dust collection device for a powder coating booth. This device features a simple structure, efficient dust collection and purification, convenient equipment maintenance, optimized airflow guidance and dust collection, and good mobility and stability, thereby improving the environmental friendliness, economy, and safety of the powder coating process.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a dust collection device for a powder spraying cabinet, comprising a frame and a filter device, a negative pressure device, an air collection device, and a recovery device installed on the frame and connected to the inner periphery of the powder spraying cabinet. The negative pressure device is located at the upper end of the frame and includes an exhaust fan, used to create negative pressure inside the powder spraying cabinet so that dust-containing exhaust gas passes through the filter device and the air collection device to the recovery device while maintaining the air pressure balance inside the powder spraying cabinet. The filter device is located below the negative pressure device and can move back and forth relative to the frame, including a filter element, used to filter and capture dust particles from the dust-containing exhaust gas extracted from the powder spraying cabinet. The air collection device is located at the left end of the negative pressure device and includes an air collection pipe, used to guide and further evenly distribute and collect the airflow after filtration by the filter element to improve the dust collection efficiency of the recovery device. The recovery device is located at the lower end of the air collection device and the left end of the filter device, including a recovery bucket, used to collect dust falling from the air collection pipe.

[0009] As a further explanation of this technical solution:

[0010] Preferably, the negative pressure device includes two sets, which are arranged one after the other and cooperate with each other to make the dust-containing exhaust gas in the powder spraying cabinet flow from the inside of the powder spraying cabinet towards the filter device, so as to prevent dust from accumulating in the powder spraying cabinet.

[0011] Preferably, the filter element of the filtration device includes multiple sets, which are evenly arranged vertically at the front and back. When dusty exhaust gas passes through the filter element, larger dust particles will directly impact the surface of the filter element fibers under inertial action and be intercepted, while smaller particles will diffuse to the vicinity of the filter element fibers under the influence of Brownian motion and be adsorbed, thereby achieving efficient purification of exhaust gas.

[0012] Preferably, the filtration device further includes an independent filter cartridge cart, with multiple filter cartridges arranged on the upper part of the independent filter cartridge cart. The lower part of the independent filter cartridge cart is equipped with omnidirectional casters on all four sides. The omnidirectional casters are used to move the independent filter cartridge cart back and forth, so that the filter cartridges can move back and forth relative to the frame. This allows the filter cartridges to be inspected, cleaned, or replaced without the need for the powder coating cabinet system to be shut down for maintenance or large-scale disassembly.

[0013] Preferably, the filtration device further includes a filter screen, which is arranged around the right end of the multiple filter elements to perform preliminary filtration of dust-containing exhaust gas passing through the filtration device, preventing large dust particles from entering the filter elements, thereby extending the service life of the filter elements.

[0014] Preferably, the recycling device further includes a Y-shaped guide channel, which is disposed at the lower end of the air collecting pipe. The lower end of the Y-shaped guide channel has an opening in the middle, and the recycling bin is placed at the lower end of the opening. The Y-shaped guide channel is used to guide and collect the dust passing through the air collecting pipe to the recycling bin.

[0015] Preferably, the recycling bin is provided with casters on all four sides of its lower end for moving the recycling bin, and the frame is provided with telescopic support feet on all four sides of its lower end for extending and retracting upwards to facilitate frame movement or extending and retracting downwards to support and fix the frame.

[0016] Preferably, it also includes a control device located on the upper side of the rear end of the frame and electrically connected to the negative pressure device to control its operation.

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

[0018] Firstly, this invention enables highly efficient dust collection and purification: two sets of negative pressure devices are arranged front and rear, working synergistically to ensure a stable flow of dust-laden exhaust gas from the inside of the powder spraying cabinet towards the filtration device, effectively preventing dust accumulation within the cabinet. The powerful negative pressure suction ensures comprehensive and efficient collection of dust-laden exhaust gas, providing a strong guarantee for subsequent purification. Multiple sets of vertically and evenly arranged filter elements effectively capture dust particles of different sizes through inertial impaction and Brownian motion adsorption, achieving highly efficient purification of the exhaust gas. Larger dust particles are trapped by impacting the filter element fiber surface under inertial action, while smaller particles diffuse to the vicinity of the filter element fibers under the influence of Brownian motion and are adsorbed, greatly improving filtration efficiency. This effectively reduces the dust content in the emitted air, meeting environmental protection requirements while also protecting the working environment and the health of operators.

[0019] Secondly, the omnidirectional casters installed around the lower end of the independent filter cartridge cart in this utility model's filtration device allow the filter cartridges to move back and forth relative to the frame. This design eliminates the need for downtime maintenance or large-scale disassembly of the powder coating system, enabling convenient inspection, cleaning, or replacement of the filter cartridges. This significantly shortens equipment maintenance time, improves production efficiency, reduces production interruptions caused by equipment maintenance, lowers maintenance costs, and allows companies to respond more flexibly to filter cartridge maintenance needs during production, ensuring production continuity.

[0020] Thirdly, the filter screen of this utility model is arranged around the right end of multiple filter elements for preliminary filtration of dust-containing exhaust gas. It effectively prevents large dust particles from entering the filter elements, avoiding blockage or damage, thus significantly extending the service life of the filter elements. This reduces the frequency of filter element replacement, lowers production costs, and ensures the long-term stable operation of the filtration system, improving the reliability and economy of the entire dust collection device.

[0021] Fourthly, this utility model optimizes airflow guidance and dust collection: The air collection pipe in the air collection device guides the airflow after it has been filtered by the filter element, further distributing and collecting it evenly. The rational structural design ensures uniform airflow distribution within the pipe, improving the dust collection efficiency of the recovery device. This ensures that airflow entering the air collection pipe from different directions and positions flows stably towards the recovery bin, reducing the possibility of dust residue and secondary pollution in the system. The Y-shaped guide channel in the recovery device, located at the lower end of the air collection pipe, effectively guides and collects the dust passing through the pipe to the recovery bin. Its special structural design helps improve the accuracy and efficiency of dust collection, allowing dust to fall more concentratedly into the recovery bin, facilitating dust recovery and subsequent processing, and further enhancing the practicality and effectiveness of the entire dust collection device.

[0022] Fifth, the casters installed around the lower part of the recycling bin facilitate its movement, making it easier to clean and transfer the collected dust, thus improving work efficiency. Simultaneously, the telescopic support feet around the lower part of the frame can extend upwards to facilitate frame movement or extend downwards to support and fix the frame. This makes the entire dust collection device more flexible and convenient in installation, adjustment, and daily use. It allows for flexible adjustment of the equipment position according to actual production needs while ensuring equipment stability during operation, guaranteeing the smooth operation of dust collection. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first angle;

[0025] Figure 2 This is a schematic diagram of the overall structure of the present invention from a second angle;

[0026] Figure 3 This is a third-angle exploded view of the structure of this utility model.

[0027] In the diagram: 1. Frame; 2. Exhaust fan; 3. Filter element; 4. Air collection duct; 5. Recycling bin; 6. Independent filter element cart; 7. Universal casters; 8. Filter screen; 9. Y-shaped guide channel; 10. Universal wheels; 11. Telescopic support legs; 12. Control device. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-3 As shown, this utility model is a dust collection device for a powder spraying cabinet, including a frame 1 and a filter device, a negative pressure device, an air collection device, and a recovery device installed on the frame 1 and connected to the inner periphery of the powder spraying cabinet. The negative pressure device is located at the upper end of the frame 1 and includes an exhaust fan 2, which is used to create negative pressure in the powder spraying cabinet so that the dust-containing exhaust gas passes through the filter device and the air collection device to the recovery device, while ensuring the air pressure balance in the powder spraying cabinet. The filter device is located below the negative pressure device and can move back and forth relative to the frame 1, including a filter element 3, which is used to filter and capture dust particles from the dust-containing exhaust gas extracted from the powder spraying cabinet. The air collection device is located at the left end of the negative pressure device and includes an air collection pipe 4, which is used to guide the airflow after it has been filtered by the filter element 3 and further distribute and collect it evenly to improve the dust collection efficiency of the recovery device. The recovery device is located at the lower end of the air collection device and the left end of the filter device, including a recovery bucket 5, which is used to collect the dust falling from the air collection pipe.

[0030] like Figures 1-3 As shown, the negative pressure device includes two sets, which are arranged one after the other and work together to make the dust-containing exhaust gas in the powder spraying cabinet flow from the inside of the powder spraying cabinet towards the filter device, thus preventing dust from accumulating in the powder spraying cabinet.

[0031] like Figure 3 As shown, the filter element 3 of the filter device includes multiple sets, which are evenly arranged vertically at the front and back. When dusty exhaust gas passes through the filter element 3, larger dust particles will directly impact the fiber surface of the filter element 3 under inertial action and be intercepted, while smaller particles will diffuse to the vicinity of the filter element 3 fiber under the influence of Brownian motion and be adsorbed, thereby achieving efficient purification of exhaust gas.

[0032] like Figures 1-3As shown, the filtration device also includes an independent filter cartridge 6, with multiple filter cartridges 3 arranged on the upper part of the independent filter cartridge 6. The lower part of the independent filter cartridge 6 is equipped with omnidirectional casters 7. The omnidirectional casters 7 are used to move the independent filter cartridge 6 back and forth, so that the filter cartridges 3 can move back and forth relative to the frame 1. The filter cartridges 3 can be inspected, cleaned or replaced without stopping the powder spraying cabinet system for maintenance or large-scale disassembly.

[0033] like Figures 1-3 As shown, the filtration device also includes a filter screen 8, which is arranged around the right end of the multiple filter elements 3 to perform preliminary filtration of the dust-containing exhaust gas passing through the filtration device, preventing large dust particles from entering the filter elements 3, thereby extending the service life of the filter elements 3.

[0034] like Figure 1 , Figure 3 As shown, the recycling device also includes a Y-shaped guide channel 9, which is located at the lower end of the air collection pipe 4. The lower end of the Y-shaped guide channel 9 has an opening in the middle, and the recycling bin 5 is placed at the lower end of the opening. The Y-shaped guide channel 9 is used to guide and collect the dust passing through the air collection pipe 4 to the recycling bin 5.

[0035] like Figures 1-3 As shown, the recycling bin 5 is provided with casters 10 around its lower end. The casters 10 are used to move the recycling bin 5. The frame 1 is provided with telescopic support feet 11 around its lower end. The telescopic support feet 11 are used to extend and retract upward to facilitate the movement of the frame 1 or to extend and retract downward to support and fix the frame 1.

[0036] like Figures 1-3 As shown, it also includes a control device 12, which is located on the upper side of the rear end of the frame 1 and is electrically connected to the negative pressure device to control its operation.

[0037] In the description of this application, it should be understood that the terms "front", "rear", "left", "right", "up", "down", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element 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 application.

[0038] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A dust collection device for a duster cabinet, characterized by: The device comprises a frame, a filtering device, a negative pressure device, an air collecting device and a recycling device, which are installed on the frame and connected with the inner wall of the spray booth. The negative pressure device is located at the upper end of the frame and comprises an exhaust fan, which is used to form a negative pressure in the spray booth so that the dust-containing exhaust gas is guided to the filtering device, the air collecting device and the recycling device while ensuring the air pressure balance in the spray booth. The filtering device is located below the negative pressure device and can move forward and backward relative to the frame. The filtering device comprises a filtering core, which is used to filter and capture dust particles from the dust-containing exhaust gas extracted from the spray booth. The air collecting device is located at the left end of the negative pressure device and comprises an air collecting pipe, which is used to guide, uniformly distribute and collect the air flow filtered by the filtering core so as to improve the dust collection efficiency of the recycling device. The recycling device is located at the lower end of the air collecting device and the left end of the filtering device and comprises a recycling barrel, which is used to collect the dust falling from the air collecting pipe.

2. A dust collection device for a duster cabinet according to claim 1, characterized in that: The negative pressure device comprises two groups, which are arranged in front of and behind each other and cooperate with each other to guide the dust-containing exhaust gas in the spray booth to flow from the inside of the spray booth to the filtering device, thereby avoiding the accumulation of dust in the spray booth.

3. A dust collection device for a duster cabinet according to claim 2, characterized in that: The filtering core of the filtering device comprises multiple groups, which are arranged vertically in front of and behind each other. When the dust-containing exhaust gas passes through the filtering core, larger dust particles will directly impact the surface of the filtering core fibers under the action of inertia and be trapped, and smaller particles will diffuse to the vicinity of the filtering core fibers under the influence of Brownian motion and be adsorbed, thereby achieving efficient purification of the exhaust gas.

4. A dust collection device for a duster cabinet according to claim 3, characterized in that: The filtering device further comprises an independent filter core vehicle, and the multiple groups of filtering cores are arranged at the upper end of the independent filter core vehicle. Four universal mobile casters are arranged around the lower end of the independent filter core vehicle. The universal mobile casters are used to move the independent filter core vehicle forward and backward, so that the filtering cores move forward and backward relative to the frame. Without stopping the operation of the spray booth system or large-scale disassembly, the filtering cores can be inspected, cleaned or replaced.

5. A dust collection device for a duster cabinet according to claim 4, characterized in that: The filtering device further comprises a filter screen, which is arranged around the multiple groups of filtering cores at the right end of the multiple groups of filtering cores. The filter screen is used to preliminarily filter the dust-containing exhaust gas passing through the filtering device, preventing large dust particles from entering the filtering core and prolonging the service life of the filtering core.

6. A dust collection device for a duster cabinet according to claim 5, characterized in that: The recycling device further comprises a Y-shaped flow guide groove, which is arranged at the lower end of the air collecting pipe. An opening is arranged at the middle of the lower end of the Y-shaped flow guide groove, and the recycling barrel is arranged at the lower end of the opening. The Y-shaped flow guide groove is used to guide and collect the dust passing through the air collecting pipe to the recycling barrel.

7. A dust collection device for a duster cabinet according to claim 6, characterized in that: Four universal wheels are arranged around the lower end of the recycling barrel. The universal wheels are used to move the recycling barrel. Four telescopic support feet are arranged around the lower end of the frame. The telescopic support feet are used to extend upward to facilitate the movement of the frame or extend downward to support and fix the frame.

8. A dust collecting device for a duster cabinet according to any one of claims 1 to 7, characterized in that: The device further comprises a control device, which is arranged at the upper side of the rear end of the frame and is electrically connected with the negative pressure device and controls the operation of the negative pressure device.

Images