Electrostatic powder spraying and recycling device

Abstract

The invention discloses an electrostatic powder spraying and recycling device, and relates to the technical field of powder recycling. A collecting box is detachably arranged on the pipe wall of the bottom of the output pipe; a plurality of electrostatic generators are arranged on the outer wall of the filter pipe at intervals, and a vibration piece is arranged on the pipe wall of the filter pipe; an input pipe is arranged on one side of an inlet of the cyclone separator, connecting pipes are symmetrically arranged on one side, far away from the cyclone separator, of the input pipe, and a sucking pump is arranged at an outlet of the cyclone separator; an opening and closing plate vertically slides on the connecting pipe, and the input pipe is provided with a control piece; a controller; the controller drives the control piece to open one connecting pipe and controls the other connecting pipe to close at the same time. When the connecting pipe is opened, the corresponding vibrating piece is closed, and the corresponding electrostatic generator is opened; when the connecting pipe is closed, the corresponding vibrating piece is opened, and the corresponding electrostatic generator is closed. The recovery rate of powder recovery can be increased.

Description

Technical Field

[0001] This application relates to the technical field of powder recycling, and in particular to an electrostatic powder coating recycling device. Background Technology

[0002] Electrostatic powder coating technology plays a vital role in modern industry. With rapid industrial development and increasingly stringent requirements for product surface treatment, electrostatic powder coating has gained widespread application due to its unique advantages. By utilizing a high-voltage electrostatic corona field to impart a negative charge to powder coating particles, and then employing electrostatic adsorption to uniformly adhere the powder to the grounded workpiece surface, this method can form a dense coating with excellent corrosion resistance, wear resistance, and decorative properties. This significantly improves product quality and lifespan, and is widely used in numerous industries such as automobiles, home appliances, and building materials, driving the development of related industries.

[0003] In the electrostatic powder coating process, the industry has been actively exploring effective technologies to address the issue of excess powder recovery. Currently, common practices include cyclone separation and cartridge filtration. Cyclone separation utilizes the centrifugal force generated by rotating airflow to separate powder from the airflow; cartridge filtration uses a filter cartridge to filter the powder-laden airflow, causing the powder to adhere to the surface of the cartridge for recovery. These technologies can effectively recover excess powder to a certain extent and are widely used in the electrostatic powder coating industry.

[0004] However, existing technologies such as cyclone separation and cartridge filtration have significant drawbacks. In practical applications, the powder recovery rate of these technologies is not high. The main reason is that the powder adhering to the filter bags and cyclone dust collectors is difficult to remove completely, resulting in some powder not being effectively recovered, wasting resources, and increasing production costs. Summary of the Invention

[0005] To improve the recovery rate of powder, this application provides an electrostatic powder coating recovery device.

[0006] This application provides an electrostatic powder coating recovery device, which adopts the following technical solution: An electrostatic powder coating recycling device includes a collection hopper disposed in a spraying chamber. One side of the collection hopper has a collection port facing the sprayed workpiece, and the side of the collection hopper away from the collection port has symmetrically distributed output ports. An output pipe is provided in the collection hopper. The output pipe is connected to and corresponds one-to-one with the output port. A collection box is detachably provided on the bottom wall of the output pipe. The output pipe has a transmission port that is connected to the collection box. A filter tube is disposed on the side of the output tube away from the output port and connected to it. Multiple electrostatic generators are spaced apart on the outer wall of the filter tube, and a vibrating element is disposed on the wall of the filter tube on the side opposite to the electrostatic generator. A cyclone separator is provided with an input pipe on one side of its inlet and a connecting pipe symmetrically arranged on the side of the input pipe away from the cyclone separator. The connecting pipe corresponds to and is connected to the filter pipe. An air pump is provided at the outlet of the cyclone separator. The connecting pipe has a sliding opening and closing plate, and the input pipe is equipped with a control component to control the opening and closing of the connecting pipe. A controller is installed on the input tube, and the controller is connected to the control component, the vibration component, and the electrostatic generator respectively; The controller drives the control unit to open one of the connecting pipes while simultaneously controlling the other connecting pipe to close. When the connecting pipe is opened, the corresponding vibrating element is closed, and the corresponding electrostatic generator is opened; When the connecting pipe is closed, the corresponding vibrating element opens, and the corresponding electrostatic generator closes.

[0007] By adopting the above technical solution, the collection port of the collecting hopper is directly facing the sprayed workpiece, which can collect excess powder and transfer it to the collection box through the output pipe; the electrostatic generator of the filter tube causes the powder to be adsorbed on the filter tube wall, and the powder in the airflow is separated and recovered in conjunction with the cyclone separator and the air pump; the controller controls the opening and closing of the connecting pipe, so that one connecting pipe is open and the other is closed, and at the same time controls the switching of the vibrating component and the electrostatic generator, which is conducive to continuous adsorption of powder by alternating the use of the filter tube, thereby improving the powder recovery rate and reducing resource waste and production costs.

[0008] Optionally, the control component is a control motor; The connecting pipe is provided with a mounting frame, the opening and closing plate slides on the mounting frame, and the control motor is provided on the mounting frame; The output shaft of the control motor is coaxially provided with a control screw, and the opening and closing plate is threadedly connected to the control screw.

[0009] By adopting the above technical solution, the control screw is rotated by the control motor, causing the opening and closing plate to slide within the mounting frame, thereby controlling the opening and closing of the connecting pipe. In turn, the controller drives the control components to alternately open and close the two connecting pipes, thereby switching the filtration state of the filter pipe, effectively improving the powder recovery rate and reducing resource waste and production costs.

[0010] Optionally, the filter tube includes a tube body and a connecting sleeve; The connecting sleeves are multiple and are respectively located at the openings on both sides of the pipe body. The side of the connecting sleeve away from the pipe body is connected to the connecting pipe and the output pipe respectively.

[0011] By adopting the above technical solution, the filter tube adopts a structure of tube body and connecting sleeve. The connecting sleeve is set at the tube opening on both sides of the tube body and connects the connecting tube and the output tube respectively. This makes it easier to connect the filter tube with the connecting tube and the output tube, and at the same time, it buffers the vibration of the tube body when the powder is shaken off.

[0012] Optionally, a guide plate is inclined upward inside the tube, and there are multiple guide plates that are staggered vertically. The adjacent guide plates each have a communication opening with the upper and lower opposite sides of the pipe wall.

[0013] By adopting the above technical solution, in the electrostatic powder coating recovery device, multiple guide plates that are staggered vertically and inclined upward are set inside the filter tube. Adjacent guide plates form a communication port with the upper and lower opposite sides of the tube body, which can extend the movement path of the powder in the filter tube and the contact area with the powder, so that the powder has a more sufficient contact time with the electrostatic field inside the filter tube, increasing the probability of the powder being adsorbed and recovered, and improving the powder recovery efficiency.

[0014] Optionally, the guide plate is slidably connected to the wall of the tube body, and the tube body is provided with an elastic driving member that drives the guide plate away from the tube body; The upper and lower opposite sides of the tube body are respectively equipped with transmission ropes that slide through the tube walls. One end of the transmission rope is connected to the opening and closing plate. The transmission rope is connected to a connecting rope that corresponds to the guide plate one by one. The end of the connecting rope away from the transmission rope is connected to the guide plate. When the opening and closing plate opens the connecting pipe, the transmission rope drives the guide plate to slide to abut against the pipe wall.

[0015] By adopting the above technical solution, when the opening and closing plate opens the connecting pipe, the guide plate can slide to the pipe wall of the pipe body, so that the guide plate can be used to guide the airflow; at the same time, the driving component drives the guide plate away from the pipe body, so that the shaken powder can flow to the collection box.

[0016] Optionally, the elastic driving element is a driving spring; The inner wall of the tube is provided with a limiting groove, and the side wall of the guide plate is provided with a limiting block that slides in the limiting groove. The driving spring is installed in the limiting groove and drives the guide plate away from the tube wall of the tube.

[0017] By adopting the above technical solution, the driving spring installed in the limiting groove on the inner wall of the tube can drive the limiting block on the guide plate to slide in the limiting groove, so that the guide plate is away from the tube wall, which helps to improve powder recovery efficiency and reduce resource waste and production costs.

[0018] Optionally, a hinge shaft is hinged to the output tube and located inside the transmission port, and a sealing plate for sealing the transmission port is provided on the outer periphery of the hinge shaft. A linkage rope is slidably threaded through the filter tube. The linkage rope is wound around the outer periphery of the hinge shaft. One end of the linkage rope is connected to the transmission rope, and the other end is connected to the outer periphery of the hinge shaft. When the opening and closing plate opens the connecting pipe, the linkage rope drives the hinge shaft to rotate to the sealing plate to seal the transmission port; The output tube is equipped with a power component that drives the sealing plate to open the transmission port.

[0019] By adopting the above technical solution, the transmission port can be automatically blocked when the connecting pipe is opened by the opening and closing plate, allowing the powder to enter the collection box and reducing the possibility of secondary powder filtration. When the powder is shaken off, the transmission port can be automatically opened to facilitate powder collection and effectively improve powder recovery efficiency.

[0020] Optionally, the power component is a power torsion spring, which is sleeved on the outer periphery of the hinge shaft. One end of the power torsion spring abuts against the sealing plate, and the other end abuts against the output pipe.

[0021] By adopting the above technical solution, using a structure in which a power torsion spring is sleeved on the outer periphery of the hinge shaft, with one end abutting against the sealing plate and the other end abutting against the output pipe, the sealing plate can be driven to block the transmission port under corresponding working conditions.

[0022] Optionally, the collecting hopper includes a side plate, an upper plate, and a lower plate; The upper plate and the lower plate are arranged opposite each other and inclined downwards, and the side plates are symmetrically arranged and respectively connected to the upper plate and the lower plate.

[0023] By adopting the above technical solution, the collecting hopper uses an upper plate and a lower plate that are arranged opposite each other and tilted downwards, as well as side plates that are symmetrically connected to the upper and lower plates. This can better collect excess powder during the spraying process, allowing the powder to smoothly enter the collecting hopper and be recycled through the output pipe, thereby improving powder recycling efficiency and reducing resource waste and production costs.

[0024] In summary, this application includes at least one of the following beneficial effects: 1. The powder is adsorbed into the filter tube by an electrostatic generator, and the adsorbed powder falls into the collection box by a vibrating component, which improves the powder recovery rate and reduces resource waste and production costs. 2. The controller drives the control components to alternately open and close the connecting pipes, causing multiple filter tubes to work alternately, thereby achieving continuous powder recovery and improving recovery efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of an embodiment of this application; Figure 2 This is a schematic diagram of the internal structure of an embodiment of this application; Figure 3 yes Figure 2 Schematic diagram of Part A; Figure 4 This is a schematic diagram of the internal cross-section of the filter tube and the output tube in the embodiments of this application; Figure 5 yes Figure 4 Schematic diagram of Part B; Figure 6 This is a schematic diagram of the state when the opening and closing plate closes the connecting pipe in the embodiment of this application.

[0026] Reference numerals: 1. Collection hopper; 11. Collection port; 12. Output port; 13. Side plate; 14. Upper plate; 15. Lower plate; 2. Output pipe; 21. Collection box; 22. Transmission port; 23. Hinge shaft; 231. Power torsion spring; 24. Sealing plate; 25. Linkage rope; 3. Filter pipe; 31. Pipe body; 311. Limiting groove; 32. Connecting sleeve; 33. Guide plate; 331. Limiting block; 34. Connecting port; 35. Transmission rope; 351. Connecting rope; 36. Drive spring; 4. Static generator; 5. Vibrating component; 6. Cyclone separator; 61. Input pipe; 62. Connecting pipe; 621. Mounting frame; 63. Air pump; 64. Controller; 7. Opening and closing plate; 71. Control component; 72. Control screw. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0028] This application discloses an electrostatic powder coating recycling device.

[0029] See Figure 1 and Figure 2 The electrostatic powder coating recovery device provided in this application includes a collecting hopper 1, an output pipe 2, a filter pipe 3, a cyclone separator 6, and a controller 64. The collecting hopper 1 is fixedly installed in the spraying chamber to collect excess powder. The output pipe 2 is connected to the collecting hopper 1, transmitting the collected powder to the filter pipe 3 for preliminary filtration. The cyclone separator 6 further separates and recovers the powder. The controller 64 controls the operating status of each component, achieving the effect of efficiently recovering excess powder from electrostatic powder coating.

[0030] Specifically, the collecting hopper 1 includes a side plate 13, an upper plate 14, and a lower plate 15. The upper plate 14 and lower plate 15 are arranged vertically opposite each other and inclined downwards. The side plate 13 is symmetrically arranged, with its opposite sides fixedly connected to the upper plate 14 and lower plate 15 respectively. The downward inclination of the upper plate 14 and lower plate 15 utilizes gravity to allow the powder entering the collecting hopper 1 to flow more smoothly towards the output port 12. The upper plate 14, lower plate 15, and side plate 13 can be made of polished carbon steel, anodized aluminum, or other materials to reduce the amount of powder remaining on the side plate 13, upper plate 14, and lower plate 15 when flowing towards the output pipe 2, thereby improving the amount of powder recovered. The side plate 13 is fixed together with the upper plate 14 and lower plate 15 by welding or bolting to ensure the structural stability of the collecting hopper 1.

[0031] A collection port 11 is provided on one side of the collecting hopper 1, which faces the workpiece to be sprayed. This allows excess powder to enter the collecting hopper 1 directly through the collection port 11 during spraying, maximizing the collection of powder scattered during the spraying process. An output port 12 is provided on the side of the collecting hopper 1 away from the collection port 11. There are two output ports 12, which are arranged symmetrically.

[0032] See Figure 1 and Figure 2 The output pipe 2 is fixedly installed in the collecting hopper 1, and is connected to and corresponds one-to-one with the output port 12. A collection box 21 is detachably fixed to the bottom wall of the output pipe 2. A transmission port 22 is opened on the bottom wall of the output pipe 2, located away from the collecting hopper 1, and is connected to the collection box 21. The output pipe 2 can be a round or square pipe, and the material can be polished carbon steel, anodized aluminum, etc. The collection box 21 is used to collect the initially separated powder, and its detachable design facilitates cleaning and replacement. The collection box 21 can be connected to the output pipe 2 by clips or screws.

[0033] The filter tube 3 adopts a square tube structure and is located on the side of the output tube 2 away from the output port 12. The filter tube 3 is inclined upward and is connected to the output tube 2. The airflow in the output tube 2 carries the powder into the filter tube 3. An electrostatic generator 4 is installed and fixed on the bottom outer wall of the filter tube 3. Multiple electrostatic generators 4 are arranged at even intervals along the extension direction of the filter tube 3. The specific number and installation interval of the electrostatic generators 4 are determined according to the coverage area of ​​the electrostatic generators 4. During operation, the electrostatic generators 4 use a medium-low voltage electric field to make the wall of the filter tube 3 positively charged. This allows the negatively charged powder sprayed from the spray gun to be adsorbed on the wall of the filter tube 3 when it passes through the filter tube 3, and the powder adsorbed on the wall of the filter tube 3 can be detached again.

[0034] Vibrating elements 5 are installed on the wall of the filter tube 3. The vibrating elements 5 are located on the side of the filter tube 3 facing away from the electrostatic generator 4, and there are multiple vibrating elements 5 evenly spaced. In this embodiment, the vibrating element 5 is a pneumatic piston vibrator. The vibrating element 5 is connected to an external source. In use, compressed air drives the internal piston to reciprocate at high speed in a sealed cavity, impacting the wall of the filter tube 3, thereby generating a high-frequency, high-energy linear impact force, which can shake off the adsorbed powder when the electrostatic generator 4 stops.

[0035] The filter tube 3 includes a tube body 31 and connecting sleeves 32. Multiple connecting sleeves 32 are respectively located at the openings on both sides of the tube body 31. One end of each connecting sleeve 32 is fixedly connected to the end of the tube body 31, and the side of each connecting sleeve 32 away from the tube body 31 is fixedly connected to both the connecting tube 62 and the output tube 2. The tube body 31 can be made of metal or plastic, while the connecting sleeves 32 are made of flexible materials such as rubber or silicone, serving to connect, seal, and buffer.

[0036] A guide plate 33 is provided inside the tube body 31. The guide plate 33 is inclined upward. There are two sets of guide plates 33, which are staggered vertically. There are multiple guide plates 33 in each set, which are evenly spaced along the extension direction of the filter tube 3. Adjacent guide plates 33 form a communication port 34 with the upper and lower opposite sides of the tube body 31, and the adjacent communication ports 34 are staggered vertically.

[0037] The guide plate 33 can change the flow path of the powder in the filter tube 3, increase the contact opportunity between the powder and the inner wall of the filter tube 3, and improve the filtration effect. At the same time, when the powder flows with the airflow, it contacts the guide plate 33, increasing the area for powder adsorption. The guide plate 33 can be made of polished carbon steel, anodized aluminum, or other materials.

[0038] See Figure 4 and Figure 5 The guide plate 33 of the pipe body 31 is slidably connected to the pipe wall of the pipe body 31, and the pipe body 31 is provided with a drive guide plate 33 (the guide plate 33 is in Figure 2 The elastic drive component (a drive spring 36) is located away from the tube body 31. A limiting groove 311 is formed on the inner wall of the vertical tube walls on opposite sides of the tube body 31, and the extending direction of the limiting groove 311 is parallel to the inclination direction of the guide plate 33. A limiting block 331 is integrally formed on the side wall of the guide plate 33, and the thickness of the limiting block 331 is less than the thickness of the guide plate 33. The limiting block 331 slides within the limiting groove 311.

[0039] See Figure 3 and Figure 5The drive spring 36 is installed in the limiting groove 311. One end of the drive spring 36 abuts against the side of the limiting block 331 away from the drive spring 36, and the other end of the drive spring 36 abuts against the groove wall of the limiting groove 311. When the drive spring 36 is elastically released, the drive guide plate 33 (the guide plate 33 is in...) Figure 2 (Pointed out) away from the pipe wall of the pipe body 31, until the limiting block 331 abuts against the wall of the limiting groove 311, so that the guide plate 33 is away from the connecting port 34 (the connecting port 34 is in Figure 2 There is a gap between the guide plate 33 and the wall of the tube 31 on one side, so that the shaken powder can flow to the output tube 2 through the gap between the guide plate 33 and the wall of the tube 31, which is conducive to collecting the shaken powder in the collection box 21.

[0040] See Figure 1 and Figure 2 The cyclone separator 6 is located on the side of the filter tube 3 away from the output tube 2. The cyclone separator 6 uses the centrifugal force generated by the rotating airflow to separate the powder from the airflow. An input tube 61 is fixedly connected to the inlet side of the cyclone separator 6. Connecting tubes 62 are symmetrically fixed to the side of the input tube 61 away from the cyclone separator 6, corresponding one-to-one with the filter tubes 3. The side of the connecting tubes 62 away from the input tubes 61 is fixedly connected to each of the filter tubes 3, thus connecting the connecting tubes 62 and the filter tubes 3. An air pump 63 is fixedly connected to the outlet of the cyclone separator 6. The air pump 63 provides power to generate airflow, allowing excess powder generated during spraying to follow the airflow through the collecting hopper 1 and into the output tube 2 via the output port 12. From there, the powder enters the filter tube 3 for filtration. The filtered airflow then enters the cyclone separator 6 through the connecting tubes 62 and the input tube 61, recovering any remaining powder in the airflow and significantly improving the powder recovery rate.

[0041] See Figure 4 and Figure 6 A sliding opening / closing plate 7 is mounted on the connecting pipe 62, with each opening / closing plate 7 corresponding to one of the connecting pipes 62. The input pipe 61 is equipped with a control component 71, which is a control motor, to control the opening and closing of the opening / closing plate 7. A mounting frame 621 is fixedly connected to the outside of the input pipe 61. The opposite side walls of the opening / closing plate 7 are slidably connected to the inner wall of the mounting frame 621. The control motor is mounted and fixed to the mounting frame 621, and a control screw 72 is coaxially fixed to the output shaft of the control motor. The opening / closing plate 7 is threadedly connected to the control screw 72. The control motor drives the opening / closing plate 7 to slide up and down via the control screw 72, thereby controlling the opening and closing of the input pipe 61.

[0042] The controller 64 is fixedly connected to the input pipe 61, and is electrically connected to the control component 71, the vibrating component 5, and the electrostatic generator 4. In use, the controller 64 drives the control motor to start, causing one of the opening / closing plates 7 to open the corresponding input pipe 61 and the other opening / closing plate 7 to close the corresponding output pipe 2. When the connecting pipe 62 is open, the corresponding vibrating component 5 closes, while the corresponding electrostatic generator 4 opens; when the connecting pipe 62 is closed, the corresponding vibrating component 5 opens, while the corresponding electrostatic generator 4 closes. This enables intelligent control of each component of the device, improving recycling efficiency.

[0043] See Figure 5 and Figure 6 A transmission rope 35 is slidably threaded through the upper and lower opposite sides of the pipe body 31, and each transmission rope 35 corresponds to a set of guide plates 33 (the guide plates 33 are in...). Figure 2 The limiting block 331 is marked on one side. One end of the transmission rope 35 is fixedly connected to the side wall of the opening and closing plate 7. A connecting rope 351 is fixedly connected to the transmission rope 35. The connecting rope 351 slides through the pipe wall of the pipe body 31. The connecting rope 351 and the limiting block 331 correspond one-to-one, and the end of the connecting rope 351 away from the transmission rope 35 is fixedly connected to the limiting block 331. When the opening and closing plate 7 opens the connecting pipe 62, it pulls the transmission rope 35. At this time, the transmission rope 35 drives the limiting block 331 to slide away from the connecting port 34 through the connecting rope 351, so that the guide plate 33 abuts against the pipe wall of the pipe body 31. At this time, the guide plate 33 is used to guide the flow direction of the airflow when the connecting pipe 62 is opened.

[0044] See Figure 3 and Figure 5 A hinge shaft 23 is hinged to the output pipe 2, and the hinge shaft 23 is located inside the transmission port 22. A sealing plate 24 is fixedly connected to the outer periphery of the hinge shaft 23, and the sealing plate 24 is located inside the transmission port 22 to seal the transmission port 22. The sealing plate 24 can be made of rubber or plastic and has good sealing performance.

[0045] See Figure 5 and Figure 6 A linkage rope 25 is slidably inserted inside the filter tube 3. The linkage rope 25 is wrapped around the outer periphery of the hinge shaft 23. One end of the linkage rope 25 is fixedly connected to one of the transmission ropes 35, and the other end is fixedly connected to the outer periphery of the hinge shaft 23.

[0046] See Figure 2 and Figure 3 When the opening / closing plate 7 opens the input pipe 61, the linkage rope 25 drives the hinge shaft 23 to rotate, causing the sealing plate 24 to flip upward and block the transmission port 22. When the airflow flows towards the filter pipe 3, the sealing plate 24 blocks the transmission port 22, which can reduce the possibility of powder detachment from the collection box 21 and help reduce the amount of powder in the secondary filtration.

[0047] The output pipe 2 is equipped with a power component that drives the sealing plate 24 to block the transmission port 22. The power component is a torsion spring 231, which is sleeved on the outer periphery of the hinge shaft 23. One end of the torsion spring 231 abuts against the sealing plate 24, and the other end abuts against the output pipe 2. When the torsion spring 231 is released elastically, it drives the sealing plate 24 to flip away from the transmission port 22 until the sealing plate 24 opens the transmission port 22. This allows the powder that has been shaken off the inner wall of the pipe body 31 to fall down the pipe body 31 and collect in the collection box 21.

[0048] The implementation principle of the electrostatic powder coating recovery device in this application embodiment is as follows: This device collects excess powder that drifts during electrostatic powder coating via a collecting hopper 1, and then conveys the powder to one of the filter tubes 3 via an output pipe 2. In the filter tube 3, an electrostatic generator 4 causes the powder to adhere to the tube wall, and a guide plate 33 increases the contact opportunity between the powder and the tube wall, thereby improving the filtration effect.

[0049] When the filter tube 3 needs cleaning, the controller 64 controls the control unit 71 to close the connecting tube 62, and at the same time, the electrostatic generator 4 on the tube wall and the vibration unit 5 are activated, causing the powder to fall into the collection box 21. Simultaneously, another connecting tube 62 is opened, and the generated powder is continuously filtered through alternating use. Finally, the airflow enters the cyclone separator 6 for further separation, reducing the amount of powder in the discharged airflow and improving the powder recovery rate.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electrostatic powder coating recycling device, characterized in that: It includes a collection hopper (1) and is set in the spraying chamber. A collection port (11) facing the sprayed workpiece is opened on one side of the collection hopper (1), and an output port (12) is symmetrically opened on the side of the collection hopper (1) away from the collection port (11). An output pipe (2) is provided in the collection hopper (1). The output pipe (2) is connected to the output port (12) and corresponds to each other. A collection box (21) is detachably provided on the bottom wall of the output pipe (2). The output pipe (2) has a transmission port (22) connected to the collection box (21). A filter tube (3) is located on the side of the output tube (2) away from the output port (12) and connected to it. Multiple electrostatic generators (4) are spaced apart on the outer wall of the filter tube (3). A vibrating element (5) is located on the side of the filter tube (3) facing away from the electrostatic generator (4). Cyclone separator (6), with an input pipe (61) provided on the inlet side of the cyclone separator (6), and a connecting pipe (62) symmetrically provided on the side of the input pipe (61) away from the cyclone separator (6), the connecting pipe (62) corresponding to and connected to the filter pipe (3), and an air pump (63) provided at the outlet of the cyclone separator (6). The connecting pipe (62) has a sliding opening and closing plate (7), and the input pipe (61) is provided with a control component (71) to control the opening and closing plate (7) to open or close the connecting pipe (62). A controller (64) is disposed on the input tube (61), and the controller (64) is connected to the control component (71), the vibration component (5) and the electrostatic generator (4) respectively; The controller (64) drives the control unit (71) to open one of the connecting pipes (62) while controlling the other connecting pipe (62) to close; When the connecting pipe (62) is opened, the corresponding vibrating element (5) is closed, and the corresponding electrostatic generator (4) is opened; When the connecting pipe (62) is closed, the corresponding vibrating element (5) is opened, and the corresponding electrostatic generator (4) is closed.

2. The electrostatic powder coating recycling device according to claim 1, characterized in that: The control component (71) is a control motor; The connecting pipe (62) is provided with a mounting frame (621), the opening and closing plate (7) slides on the mounting frame (621), and the control motor is provided on the mounting frame (621). The output shaft of the control motor is coaxially provided with a control screw (72), and the opening and closing plate (7) is threadedly connected to the control screw (72).

3. The electrostatic powder coating recycling device according to claim 1, characterized in that: The filter tube (3) includes a tube body (31) and a connecting sleeve (32); There are multiple connecting sleeves (32) and they are respectively located at the positions of the pipe openings on both sides of the pipe body (31). The side of the connecting sleeve (32) away from the pipe body (31) is connected to the connecting pipe (62) and the output pipe (2).

4. The electrostatic powder coating recycling device according to claim 3, characterized in that: The tube body (31) is provided with a guide plate (33) inclined upward inside, and there are multiple guide plates (33) arranged at intervals and staggered vertically; The adjacent guide plates (33) form communication openings (34) with the upper and lower opposite sides of the pipe wall of the pipe body (31).

5. The electrostatic powder coating recycling device according to claim 4, characterized in that: The guide plate (33) is slidably connected to the wall of the tube body (31), and the tube body (31) is provided with an elastic drive member that drives the guide plate (33) away from the tube body (31). A transmission rope (35) is slidably threaded through the upper and lower opposite sides of the tube body (31). One end of the transmission rope (35) is connected to the opening and closing plate (7). A connecting rope (351) corresponding to the guide plate (33) is connected to the transmission rope (35). The end of the connecting rope (351) away from the transmission rope (35) is connected to the guide plate (33). When the opening and closing plate (7) opens the connecting pipe (62), the transmission rope (35) drives the guide plate (33) to slide to the pipe wall that abuts against the pipe body (31) through the connecting rope (351).

6. The electrostatic powder coating recycling device according to claim 5, characterized in that: The elastic driving component is a driving spring (36); The inner wall of the tube (31) is provided with a limiting groove (311), and the side wall of the guide plate (33) is provided with a limiting block (331) that slides in the limiting groove (311). The driving spring (36) is installed in the limiting groove (311) and the driving spring (36) drives the guide plate (33) away from the tube wall of the tube (31).

7. The electrostatic powder coating recovery device according to claim 6, characterized in that: The output tube (2) is hinged to a hinge shaft (23) located inside the transmission port (22), and a sealing plate (24) for sealing the transmission port (22) is provided on the outer periphery of the hinge shaft (23). A linkage rope (25) is slidably threaded through the filter tube (3). The linkage rope (25) is wrapped around the outer periphery of the hinge shaft (23). One end of the linkage rope (25) is connected to the transmission rope (35), and the other end is connected to the outer periphery of the hinge shaft (23). When the opening and closing plate (7) opens the connecting pipe (62), the linkage rope (25) drives the hinge shaft (23) to rotate to the sealing plate (24) to seal the transmission port (22). The output tube (2) is equipped with a power component that drives the sealing plate (24) to open the transmission port (22).

8. The electrostatic powder coating recycling device according to claim 7, characterized in that: The power component is a power torsion spring (231), which is sleeved on the outer periphery of the hinge shaft (23). One end of the power torsion spring (231) abuts against the sealing plate (24), and the other end abuts against the output pipe (2).

9. The electrostatic powder coating recycling device according to claim 1, characterized in that: The collecting hopper (1) includes a side plate (13), an upper plate (14), and a lower plate (15); The upper plate (14) and the lower plate (15) are arranged opposite each other and inclined downwards, and the side plates (13) are symmetrically arranged and respectively connected to the upper plate (14) and the lower plate (15).

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