Wire and cable powder coating machine capable of automatically cleaning filter element

Abstract

The wire and cable powder coating machine capable of automatically cleaning the filter element comprises a machine box, a powder bin is arranged in the machine box, the filter element is arranged in the powder bin, the top end of the filter element is connected with the upper inner wall of the powder bin, and an air extractor is installed at the joint of the powder bin and the filter element. The air extractor is communicated with the interior of the filter element and used for extracting air in the filter element to extract air in the powder bin, a scraping device and a movable driving device are further arranged in the powder bin, the movable driving device is fixed to the inner wall of the powder bin and connected with the scraping device, and a scraping assembly is in contact with the outer surface of the filter element. The scraping device is driven by the moving driving device to reciprocate in the length direction of the filter element, the filter element is cleaned through an automatic scraping structure with the scraping device matched with the moving driving device instead of being manually and frequently shut down to disassemble the filter element for cleaning, and the intermittent automatic cleaning device has the advantages that the intermittent automatic cleaning of the filter element is realized, and the production efficiency is conveniently improved.

Description

A wire and cable powdering machine with automatic filter element cleaning Technical Field

[0001] This application relates to the technical field of wire and cable dusting machines, and more specifically, to a wire and cable dusting machine that automatically cleans filter cartridges. Background Technology

[0002] With advancements in wire and cable manufacturing processes, the powder coating machine, a key piece of equipment for coating cable surfaces, plays a crucial role in its gas balance system, significantly impacting processing efficiency and equipment stability. Traditional powder coating machines typically use a pump to inject compressed gas into the powder hopper, suspending the powder and ensuring its uniform adhesion to the cable surface. However, continuous inflation leads to increased internal pressure within the powder hopper, necessitating pressure balancing via an extraction mechanism (including an exhaust chamber and a negative pressure fan). Specifically, the negative pressure fan draws gas from the powder hopper through the exhaust port, and the dust-laden airflow is filtered through a filter before being discharged outside the machine casing.

[0003] The existing technology has the following significant drawbacks: After high-concentration dust in the powder hopper enters the filter element with the airflow, it gradually forms a dense dust layer on the surface of the filter element. Under long-term operation, the air permeability of the filter element is greatly reduced, and the negative pressure fan needs to overcome additional resistance to draw air, resulting in a sharp increase in power consumption, accelerating motor aging, and even burnout. In order to maintain system operation, it is necessary to frequently stop the machine to disassemble the filter element for manual cleaning, which requires operators to directly contact dust-containing parts, increasing labor intensity and posing occupational health hazards. Furthermore, frequent shutdowns seriously affect the continuity of production, resulting in low production efficiency. Summary of the Invention

[0004] To address the problem of reduced production efficiency caused by frequent manual shutdowns and filter element removal for cleaning in existing technologies, this application provides an automatic filter element cleaning machine for wires and cables.

[0005] An automatic filter cartridge cleaning wire and cable powdering machine includes a chassis with a powder hopper inside. A filter cartridge is disposed inside the powder hopper, and the filter cartridge is connected to the inner wall of the powder hopper. An air extraction device is installed at the connection between the powder hopper and the filter cartridge, and the air extraction device communicates with the interior of the filter cartridge to extract air from the powder hopper. The powder hopper also includes a scraping device and a moving drive device. The moving drive device is fixed to the inner wall of the powder hopper and connected to the scraping device. The scraping device contacts the outer surface of the filter cartridge, and the moving drive device drives the scraping device to reciprocate along the length of the filter cartridge.

[0006] The chassis is also equipped with an inflation device for injecting gas into the powder hopper, an inlet hole for cables to enter the powder hopper, an outlet hole for cables to exit the powder hopper, and a hopper for adding powder.

[0007] Preferably, the scraping device includes a connecting frame with a collar that fits onto the filter element. The inner wall of the collar is provided with bristles that contact the outer surface of the filter element. The connecting frame is connected to the moving drive device.

[0008] Preferably, the connecting frame is also connected to an air blowing pipe, the air blowing port of the air blowing pipe faces the filter element, and the other end of the air blowing pipe is used to connect and communicate with an external air source.

[0009] Preferably, the moving drive device is a rodless cylinder.

[0010] Preferably, the air extraction device is a negative pressure fan.

[0011] Preferably, the inflation device is a blower.

[0012] This application includes at least one of the following beneficial technical effects:

[0013] 1. The wires and cables are inserted into the powder hopper through the inlet and outlet holes. An air-filling device injects gas into the hopper, causing the powder to rise and suspend, adhering to the cable surface and coating it with powder. An air extraction device draws air from inside the filter element to maintain pressure balance within the hopper. The filter element also filters the gas, preventing powder from easily entering the extraction equipment, thus avoiding blockages and powder loss. As dust enters the filter element with the airflow, it gradually forms a dense dust layer on the filter surface. A moving drive device then activates a scraping device. The scraping device moves back and forth along the length of the filter element, contacting the outer surface of the filter element. As the scraping device moves, it scrapes off the dense dust layer formed on the surface of the filter element, maintaining the air permeability of the filter element and reducing the possibility of damage to the air extraction device. The automatic scraping structure, which works in conjunction with the moving drive device, cleans the filter element, replacing the need for frequent manual shutdowns to disassemble the filter element. Its advantages include intermittent automatic cleaning of the filter element, which improves production efficiency and reduces the disassembly operations and contact between workers and powder, thus protecting the health of workers and reducing their labor intensity.

[0014] 2. The scraping device uses brush bristles to make flexible contact with the filter element, avoiding hard friction on the filter element and reducing the risk of filter element damage.

[0015] 3. Compressed air is supplied by an air source and blown onto the filter element through an air blowing pipe, achieving dust removal in conjunction with the scraping device. This dual protection ensures a better dust removal effect. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the overall structure of an automatic filter cartridge cleaning wire and cable powdering machine according to this embodiment.

[0017] Figure 2 is a cross-sectional view of an automatic filter cartridge cleaning wire and cable powdering machine according to this embodiment.

[0018] Reference numerals: 1. Chassis; 11. Housing; 111. Horizontal plate; 112. Left side plate; 1121. Cable outlet; 113. Right side plate; 1131. Cable inlet; 1132. Powder inlet; 114. Front side plate; 115. Partition; 116. U-shaped plate; 117. Support pipe; 12. Casters; 2. Powder hopper; 3. Hopper; 31. Door opening structure; 32. Guide tilting plate; 4. Blower; 41. Through pipe; 5. Filter element; 6. Air extraction device; 7. Scraper device; 71. Connecting frame; 72. Collar; 73. Brush bristles; 74. Air blowing pipe; 8. Moving drive device. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] Referring to Figures 1 and 2, an automatic filter element cleaning wire and cable powder purifier includes a housing 1, with a powder hopper 2 inside the housing 1. The housing 1 includes a rectangular box body 11 and four casters 12 located at the four corners of the bottom of the box body 11. A rectangular horizontal plate 111 is provided inside the box body 11. The left and right ends of the horizontal plate 111 are connected to the inner walls of the left side plate 112 and the right side plate 113 of the box body 11, respectively. The front end of the horizontal plate 111 is connected to the inner wall of the front side plate 114 of the box body 11. The rear end is connected to a partition 115, which extends downward. The box body 11 has a U-shaped plate 116 below the horizontal plate 111. The two sides of the U-shaped plate 116 are connected to the inner walls of the left and right side plates of the box body 11, respectively. The other two opposite sides of the U-shaped plate 116 are connected to the inner wall of the front side plate 114 of the box body 11 and the partition 115, respectively. The powder hopper 2 is formed by the horizontal plate 111, the partition 115, the U-shaped plate 116, and the left and right side plates 113 and the front side plate 114 of the box body 11.

[0021] Referring to Figure 2, the left side plate 112 of the housing 11 has an outlet hole 1121 that connects to the powder hopper 2, and the right side plate 113 of the housing 11 has an inlet hole 1131 that connects to the powder hopper 2. By passing the cable through the inlet hole 1131 into the powder hopper 2 and out through the outlet hole 1121, the cable is placed horizontally inside the powder hopper 2. The housing 11 is connected to the inlet hole 1131 and the outlet hole 1121, and the cable is supported by the support pipe 117.

[0022] Referring to Figure 2, the right side plate 113 of the box body 11 is also provided with a powder inlet 1132, and a hopper 3 is fixed on the outer wall of the right side plate 113 of the box body 11. The hopper 3 is connected to the powder hopper 2 through the powder inlet 1132. The top of the hopper 3 is provided with an opening and a door structure 31 is provided at the opening. The opening of the hopper 3 is opened or closed by the door structure 31. Powder is poured into the hopper 3 from the opening of the hopper 3 and then fed into the powder hopper 2 through the powder inlet 1132 to add powder to the powder hopper 2. The hopper 3 is also provided with a guide plate 32 for pouring the powder into the position of the powder inlet 1132.

[0023] Referring to Figure 2, an inflation device is also provided inside the housing 11. The inflation device is a blower 4. An inflation hole is opened on the partition 115. The blower 4 is connected to the inflation hole through the pipe 41. The blower 4 generates gas and fills the powder hopper 2 through the inflation hole, so that the powder in the powder hopper 2 is suspended and contacts the cable surface to adhere to the cable, thereby achieving the coating of powder on the cable surface.

[0024] Referring to Figure 2, a vertical filter element 5 is installed inside the powder hopper 2. One end of the filter element 5 is connected and fixed to the horizontal plate 111. An air extraction device 6 is installed on the horizontal plate at the connection point with the filter element 5. The extraction end of the air extraction device 6 passes through the horizontal plate 111 and communicates with the filter element 5. The output end of the air extraction device 6 is connected to the outside of the housing 11. The air extraction device 6 extracts air from inside the filter element 5 to maintain the air pressure balance inside the powder hopper 2. The filter element 5 filters the gas so that the powder is not easily carried by the airflow into the air extraction device, thus avoiding blockage of the air extraction device and preventing powder from flowing out of the powder hopper 2 and causing loss. The exhaust device 6 is a negative pressure fan, and the filter element 5 is an air filter element 5, which has a cylindrical frame and is covered with non-woven filter material on the periphery of the frame. The cylindrical frame has an inner hole that communicates with the negative pressure fan. The air filter element 5 is prior art and will not be described in detail in this application. The number of filter elements 5 is at least two. When there are two filter elements 5, the two filter elements 5 are arranged symmetrically on the left and right, and the two filter elements 5 are connected to the same exhaust device 6.

[0025] Referring to Figure 2, the powder hopper 2 is also equipped with a scraping device 7 and a moving drive device 8. The scraping device 7 includes a connecting frame 71, and the connecting frame 71 is provided with collars 72. The number of collars 72 corresponds to the number of filter elements 5, and each collar 72 is fitted onto multiple filter elements 5. The inner wall of the collar 72 is provided with bristles 73, which contact the outer surface of the filter element 5. The moving drive device 8 is a rodless cylinder, which is vertically set and fixed on the partition 115. The connecting frame 71 is connected to the piston of the rodless cylinder. The rodless cylinder drives the connecting frame 71 to rise and fall, thereby driving the collars 72 to rise and fall, so that the collars 72 reciprocate along the length of the filter element 5. When the air extraction device 6 extracts air, the dust enters the filter element 5 with the airflow and gradually settles on the surface of the filter element 5. A dense dust layer is formed on the surface. The brush bristles 73 scrape the powder off the surface of the filter element 5 by the reciprocating movement of the collar 72 along the length of the filter element 5, maintaining the air permeability of the filter element 5 and reducing the possibility of damage to the air extraction device 6. The automatic scraping structure, which works in conjunction with the scraping device 7 and the moving drive device 8, cleans the filter element instead of requiring frequent manual shutdowns to disassemble the filter element 5. Its advantages include intermittent automatic cleaning of the filter element, which can improve production efficiency, reduce the disassembly operations of workers and reduce the contact between workers and powder, thus protecting the personal health of workers and reducing their labor intensity. Furthermore, the scraping device 7 uses brush bristles 73 to make flexible contact with the filter element 5, avoiding hard friction on the filter element 5 and reducing the risk of damage to the filter element 5.

[0026] Referring to Figure 2, further, the connecting frame 71 is connected to an air blowing pipe 74, the air blowing port of the air blowing pipe 74 faces the filter element 5, there are multiple air blowing pipes 74, each filter element 5 has multiple air blowing pipes 74 arranged around it, and the other port of the multiple air blowing pipes 74 is used to connect and communicate with the same external air source, which is an air compressor.

[0027] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wire and cable powder purifier for automatically cleaning filter cartridges, characterized in that: The device includes a chassis, inside which is a powder hopper. Inside the powder hopper is a filter element, which is connected to the inner wall of the powder hopper. An air extraction device is installed at the connection between the powder hopper and the filter element. This air extraction device communicates with the inside of the filter element to extract air from the powder hopper. The powder hopper also includes a scraping device and a moving drive device. The moving drive device is fixed to the inner wall of the powder hopper and connected to the scraping device. The scraping device contacts the outer surface of the filter element and is driven by the moving drive device to reciprocate along the length of the filter element. The chassis also includes an inflation device for injecting gas into the powder hopper, an inlet hole for cables to enter the powder hopper, an outlet hole for cables to exit the powder hopper, and a hopper for adding powder.

2. The wire and cable powdering machine for automatically cleaning filter elements according to claim 1, characterized in that: The scraping device includes a connecting frame with a collar that fits onto the filter element. The inner wall of the collar is provided with bristles that contact the outer surface of the filter element. The connecting frame is connected to the moving drive device.

3. The wire and cable powdering machine for automatically cleaning filter elements according to claim 2, characterized in that: The connecting frame is also connected to an air blowing pipe, the air blowing port of the air blowing pipe faces the filter element, and the other end of the air blowing pipe is used to connect and communicate with an external air source.

4. The wire and cable powdering machine for automatically cleaning filter elements according to claim 1, characterized in that: The moving drive device is a rodless cylinder.

5. The wire and cable powdering machine for automatically cleaning filter elements according to claim 1, characterized in that: The air extraction device is a negative pressure fan.

6. The wire and cable powdering machine for automatically cleaning filter elements according to claim 1, characterized in that: The inflation device is a blower.

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