A powder booth cleaning device and cleaning method for electrostatic spraying wheel hubs

Abstract

This application discloses a powder booth cleaning device and method for electrostatic spraying wheel hubs, applicable to the field of powder booth cleaning. The cleaning device, through the installation of a guide plate and other devices, allows powder to fall onto the surface of the guide plate through a grid during powder spraying. Simultaneously, because the level of the antistatic liquid is higher than the top of the reflow pipe and the collection box is located above the guide plate, the antistatic liquid flows onto the surface of the guide plate under gravity through the reflow pipe and the ring pipe. The powder falling onto the guide plate then flows along the antistatic liquid to the position of the collecting pipe. A liquid pump can then pump the antistatic liquid from the collecting pipe back into the collection box through a suction pipe and a discharge pipe. This reciprocating flow of the antistatic liquid continuously collects the powder falling onto the guide plate into the collection box. This design prevents powder accumulation and significantly reduces static electricity generation during powder cleaning, effectively preventing fires.

Description

Technical Field

[0001] This application relates to the field of powder booth cleaning, and in particular to a powder booth cleaning device and cleaning method for electrostatic spraying wheel hubs. Background Technology

[0002] The wheel hub requires electrostatic powder coating during processing. Powder coating uses powder spraying equipment (electrostatic powder coating machine) to spray powder coating onto the surface of the wheel hub. Under the action of static electricity, the powder will be evenly adsorbed onto the surface of the workpiece to form a powdery coating.

[0003] When powder coating is applied to wheel hubs, it is done inside a powder booth. During the coating process, the powder spreads and falls onto the floor of the booth. If the charged powder is not eliminated in time and accumulates on the floor, it can easily generate static electricity through collisions. Furthermore, static electricity can be generated during powder cleaning. If the static electricity ignites the powder, it can cause a fire. Therefore, further improvements are needed. Summary of the Invention

[0004] The purpose of this application is to prevent powder generated during spraying from accumulating on the floor of the powder booth and to avoid static electricity generation during powder cleaning. Compared with the prior art, this application provides a powder booth cleaning device and method for electrostatic spraying wheel hubs, including a powder booth, a partition fixedly connected to the inner wall of the powder booth, a trough opened in the middle of the partition, a grid fixedly connected to the inner wall of the trough, a conical guide plate fixedly connected to the inner wall of the powder booth, an annular pipe fixedly connected to the top surface of the edge of the guide plate, multiple evenly distributed jet holes opened on the side wall of the inner ring of the annular pipe, and a collecting pipe fixedly connected to the middle of the guide plate. A liquid pump and a collection tank are fixedly connected to the outer wall of the powder chamber, with the liquid pump located above the collection tank. The collection tank is filled with antistatic liquid. A suction pipe is fixedly connected between the side wall of the manifold and the input end of the liquid pump. A discharge pipe is fixedly connected to the output end of the liquid pump, extending to the inside of the collection tank. A reflow pipe is fixedly connected between the collection tank and the ring pipe. The level of the antistatic liquid is higher than the top of the reflow pipe. The collection tank is located above the guide plate. This design prevents powder accumulation and greatly reduces static electricity generation during powder cleaning, effectively preventing fires.

[0005] Optionally, the bottom end of the drain pipe is located below the top end of the reflow pipe, and a tapered pipe is fixedly connected to the top end of the reflow pipe. With the above arrangement, the antistatic liquid in the collection box can flow better through the reflow pipe to the surface of the guide plate.

[0006] Optionally, a filter screen is installed on the inner wall of the collection box, and a rubber ring is fixedly connected to the outer wall of the filter screen. The rubber ring is slidably and sealed to the inner wall of the collection box. The drain pipe and the reflow pipe pass through the filter screen and are slidably and sealed to it. Through the above settings, the antistatic liquid can be filtered, avoiding excessive impurities in the antistatic liquid that reduce its fluidity.

[0007] Optionally, a touch switch is fixedly connected to the inner wall of the top of the collection box, and an alarm is fixedly connected to the outer wall of the collection box. The alarm is electrically connected to the touch switch.

[0008] Optionally, a contact rod is fixedly connected to the top surface of the filter screen, and the contact rod is located directly below the touch switch; when the filter screen becomes clogged, the filter screen will be pushed upward until the contact rod touches the touch switch, at which point the alarm on the collection box will sound, reminding the staff to replace the filter screen.

[0009] Optionally, a spiral-shaped air-guiding bladder is fixedly connected to the top surface of the guide plate, with the outer ring of the air-guiding bladder located inside the inner ring of the ring pipe. With the above configuration, the water discharged from the ring pipe will flow along the guide spiral of the air-guiding bladder to the position of the collecting pipe, so that the antistatic liquid can flow more evenly on the surface of the guide plate and increase the cleaning effect of the powder.

[0010] Optionally, a main air tube with the same shape as the air bladder is fixedly connected to the bottom surface of the deflector plate, and an auxiliary air tube is fixedly connected to the outer wall of the main air tube. The auxiliary air tube is connected to the main air tube and the air bladder.

[0011] Optionally, an air pump and an air extraction pump are fixedly connected to the inner wall at the bottom of the powder booth. An air pump is fixedly connected to the output end of the air pump, and an air extraction pump is fixedly connected to the input end of the air extraction pump.

[0012] Optionally, an inflation control valve and an air extraction control valve are fixedly connected to the outer walls of the inflation tube and the air extraction tube, respectively, and both the inflation tube and the air extraction tube are fixedly connected to the auxiliary air tube. With the above settings, the outer surface of the air guide bag can be cleaned.

[0013] A cleaning method for a powder booth cleaning device for electrostatic spraying wheel hubs includes the following steps:

[0014] S1. Powder collection: Powder coating is applied to the wheel hub on the upper side of the grille, and the powder can fall through the grille onto the surface of the deflector.

[0015] S2. Transferring Powder: Turn on the air pump and air control valve, and turn off the air pump and air control valve. Inflate the inside of the guide air bag, so that the antistatic liquid in the collection box flows along the guide air bag and spirals to the position of the collection pipe under the action of gravity. At this time, the powder that falls on the surface of the guide plate will flow along the antistatic liquid to the position of the collection pipe. Start the liquid pump to pump the antistatic liquid at the collection pipe back to the inside of the collection box through the suction pipe and discharge pipe. The powder that falls on the guide plate can be collected into the collection box.

[0016] S3. Self-cleaning: Turn off the air pump and air control valve, and turn on the air extraction pump and air extraction control valve to extract the gas inside the air guide bag and make it flat. At this time, the antistatic liquid can pass over the air guide bag to clean the powder on its surface. When the alarm on the collection box sounds, the staff replaces the filter screen and cleans the powder in the collection box at the same time.

[0017] Compared to existing technologies, the advantages of this application are:

[0018] (1) The cleaning device, through the setting of the guide plate and other devices, allows the powder to fall onto the surface of the guide plate through the grid when the wheel hub is sprayed with powder. At the same time, since the liquid level of the antistatic liquid is higher than the top of the heavy flow pipe and the collection box is located on the upper side of the guide plate, the antistatic liquid can flow onto the surface of the guide plate under the action of gravity through the heavy flow pipe and the ring pipe. At this time, the powder falling on the guide plate flows along the antistatic liquid to the position of the collection pipe. The liquid pump can pump the antistatic liquid at the collection pipe back to the inside of the collection box through the suction pipe and the discharge pipe. The antistatic liquid flows back and forth as described above, which can continuously collect the powder falling on the guide plate into the collection box. Through the above settings, the accumulation of powder is prevented, and the generation of static electricity is greatly reduced during the powder cleaning process, effectively avoiding the occurrence of fire.

[0019] (2) The bottom end of the pipe is located below the top of the reflow pipe. A tapered pipe is fixedly connected to the top of the reflow pipe. Through the above arrangement, the antistatic liquid in the collection box can flow better through the reflow pipe to the surface of the guide plate.

[0020] (3) A filter screen is installed on the inner wall of the collection box, and a rubber ring is fixedly connected to the outer wall of the filter screen. The rubber ring is slidably connected to the inner wall of the collection box in a sealed manner. The drain pipe and the reflow pipe pass through the filter screen and are slidably connected to it in a sealed manner. Through the above settings, the antistatic liquid can be filtered, avoiding excessive impurities in the antistatic liquid that reduce its fluidity.

[0021] (4) A contact rod is fixedly connected to the top surface of the filter screen, and the contact rod is located directly below the touch switch. When the filter screen becomes clogged, the filter screen will be pushed upward until the contact rod touches the touch switch. At this time, the alarm on the collection box will sound an alarm to remind the staff to replace the filter screen.

[0022] (5) A spiral-shaped air-guiding bag is fixedly connected to the top surface of the guide plate, and the outer ring of the air-guiding bag is located inside the inner ring of the ring pipe. With the above arrangement, the water discharged from the ring pipe will flow along the guide spiral of the air-guiding bag to the position of the collection pipe, so that the antistatic liquid can flow more evenly on the surface of the guide plate and increase the cleaning effect of the powder.

[0023] (6) The outer walls of the inflation tube and the suction tube are respectively fixedly connected with an inflation control valve and a suction control valve, and the inflation tube and the suction tube are both fixedly connected to the auxiliary air tube. Through the above settings, the outer surface of the air guide bag can be cleaned. Attached Figure Description

[0024] Figure 1 This is a front sectional view of this application;

[0025] Figure 2 This is a perspective view of the partition in this application;

[0026] Figure 3 This is a front sectional view of the collection box in this application;

[0027] Figure 4 This is a state diagram of the filter screen as it rises in this application;

[0028] Figure 5 This is a front cross-sectional view of the filter screen in this application;

[0029] Figure 6 This is a perspective view of the air deflector in this application;

[0030] Figure 7 This is a schematic diagram showing the connection between the air deflector and the air deflector airbag in this application;

[0031] Figure 8 This is a top perspective view of the air deflector in this application;

[0032] Figure 9 This is a schematic diagram showing the connection between the airflow bag and the main airway in this application;

[0033] Figure 10 This is a structural diagram of the air pump and air extraction pump in this application.

[0034] Explanation of the labels in the diagram:

[0035] 1. Powder box; 2. Partition; 201. Slot; 3. Grille; 4. Guide plate; 5. Collector pipe; 6. Extraction pipe; 7. Liquid pump; 8. Collection box; 9. Drain pipe; 10. Reflow pipe; 11. Ring pipe; 12. Rubber ring; 1201. Filter screen; 1202. Contact rod; 13. Touch switch; 14. Guide air bag; 15. Main air pipe; 16. Auxiliary air pipe; 17. Inflation pump; 1701. Inflation pipe; 1702. Inflation control valve; 18. Extraction pump; 1801. Extraction pipe; 1802. Extraction control valve. Detailed Implementation

[0036] The technical solutions in 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. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0037] Example 1:

[0038] This application discloses a powder booth cleaning device and method for electrostatic spraying wheel hubs. Please refer to [link / reference]. Figure 1-10 The system includes a powder chamber 1, with a partition 2 fixedly connected to the inner wall of the powder chamber 1. A trough 201 is formed in the middle of the partition 2, and a grid 3 is fixedly connected to the inner wall of the trough 201. A conical guide plate 4 is fixedly connected to the inner wall of the powder chamber 1, and a ring pipe 11 is fixedly connected to the top surface of the edge of the guide plate 4. Multiple evenly distributed jet holes are formed on the side wall of the inner ring of the ring pipe 11. A collecting pipe 5 is fixedly connected to the middle of the guide plate 4. A liquid pump 7 and a collection tank 8 are fixedly connected to the outer wall of the powder chamber 1, with the liquid pump 7 located above the collection tank 8. The collection tank 8 is filled with antistatic liquid. A suction pipe 6 is fixedly connected between the side wall of the collecting pipe 5 and the input end of the liquid pump 7. A discharge pipe 9 is fixedly connected to the output end of the liquid pump 7 and extends to the inner side of the collection tank 8. A reflow pipe 10 is fixedly connected between the collection tank 8 and the ring pipe 11, with the antistatic liquid level higher than the top of the reflow pipe 10. At the end, the collection box 8 is located above the guide plate 4. With the above arrangement, when the wheel hub is powder sprayed, the powder can fall onto the surface of the guide plate 4 through the grille 3. At the same time, since the liquid level of the antistatic liquid is higher than the top of the heavy flow pipe 10 and the collection box 8 is located above the guide plate 4, the antistatic liquid can flow onto the surface of the guide plate 4 under the action of gravity through the heavy flow pipe 10 and the ring pipe 11. At this time, the powder falling on the guide plate 4 flows along the antistatic liquid to the position of the collection pipe 5. The liquid pump 7 can pump the antistatic liquid at the collection pipe 5 back into the collection box 8 through the suction pipe 6 and the discharge pipe 9. The antistatic liquid flows back and forth, and the powder falling on the guide plate 4 can be continuously collected into the collection box 8. With the above arrangement, the accumulation of powder is prevented, and the generation of static electricity is greatly reduced during the powder cleaning process, effectively avoiding the occurrence of fire.

[0039] Please see Figure 1 and 6-9, the bottom end of the drain pipe 9 is located below the top end of the reflow pipe 10. The top end of the reflow pipe 10 is fixedly connected to a tapered pipe. Through the above arrangement, the antistatic liquid in the collection box 8 can flow better through the reflow pipe 10 to the surface of the guide plate 4. The top surface of the guide plate 4 is fixedly connected to a spiral guide airbag 14. The outer ring of the guide airbag 14 is located inside the inner ring of the ring pipe 11. Through the above arrangement, the water discharged from the ring pipe 11 will flow along the guide spiral of the guide airbag 14 to the position of the collection pipe 5, so that the antistatic liquid can flow more evenly on the surface of the guide plate 4, increasing the cleaning effect of the powder.

[0040] Please see Figure 3-5 The inner wall of the collection box 8 is provided with a filter screen 1201, and a rubber ring 12 is fixedly connected to the outer wall of the filter screen 1201. The rubber ring 12 is slidably connected to the inner wall of the collection box 8. The drain pipe 9 and the reflow pipe 10 pass through the filter screen 1201 and are slidably connected to it. The antistatic liquid is discharged into the lower side of the filter screen 1201 through the drain pipe 9, and then passes upward through the filter screen 1201 and is discharged through the reflow pipe 10. At this time, the powder inside the antistatic liquid can be filtered by the filter screen 1201 and retained on the lower side of the filter screen 1201. Through the above settings, the antistatic liquid can be filtered, avoiding excessive impurities in the antistatic liquid and reducing its fluidity.

[0041] Please see Figure 3-5 A touch switch 13 is fixedly connected to the inner wall of the top of the collection box 8, and an alarm is fixedly connected to the outer wall of the collection box 8. The alarm is electrically connected to the touch switch 13. A contact rod 1202 is fixedly connected to the top surface of the filter screen 1201, and the contact rod 1202 is located directly below the touch switch 13. When the filter screen 1201 is clogged, the filter screen 1201 will be pushed upward until the contact rod 1202 touches the touch switch 13. At this time, the alarm on the collection box 8 will sound an alarm to remind the staff to replace the filter screen 1201.

[0042] Please see Figure 3-10A main air pipe 15, identical in shape to the air bladder 14, is fixedly connected to the bottom surface of the guide plate 4. A secondary air pipe 16 is fixedly connected to the outer wall of the main air pipe 15, and the secondary air pipe 16 communicates with the main air pipe 15 and the air bladder 14. An air pump 17 and an air extraction pump 18 are fixedly connected to the inner wall of the bottom end of the powder chamber 1. An air pump 1701 is fixedly connected to the output end of the air pump 17, and an air extraction pipe 1801 is fixedly connected to the input end of the air extraction pump 18. An air inflation control valve 1702 and an air extraction control valve 1802 are fixedly connected to the outer walls of the air inflation pipe 1701 and the air extraction pipe 1801, respectively. All 01 are fixedly connected to the auxiliary air pipe 16. When cleaning the guide airbag 14 itself, close the inflation pump 17 and the inflation control valve 1702, open the suction pump 18 and the suction control valve 1802 to extract the gas inside the guide airbag 14 and make it flat. At this time, the antistatic liquid can flow over the guide airbag 14 to the position of the manifold 5. After cleaning, open the inflation pump 17 and the inflation control valve 1702, close the suction pump 18 and the suction control valve 1802 to inflate the inside of the guide airbag 14 and restore its guiding function. Through the above settings, the outer surface of the guide airbag 14 can be cleaned.

[0043] A cleaning method for a powder booth cleaning device for electrostatic spraying wheel hubs includes the following steps:

[0044] S1. Powder collection: Powder spraying is performed on the upper side of the grille 3, and the powder can fall through the grille 3 onto the surface of the guide plate 4.

[0045] S2. Transferring Powder: Open the air pump 17 and the air control valve 1702, close the air pump 18 and the air control valve 1802, inflate the inside of the guide air bag 14, so that the antistatic liquid in the collection box 8 flows along the guide air bag 14 in a spiral under the action of gravity to the position of the collection pipe 5. At this time, the powder that falls on the surface of the guide plate 4 will flow along the antistatic liquid to the position of the collection pipe 5. Start the liquid pump 7 to pump the antistatic liquid at the collection pipe 5 back to the inside of the collection box 8 through the suction pipe 6 and the discharge pipe 9, so that the powder that falls on the guide plate 4 can be collected into the collection box 8.

[0046] S3. Self-cleaning: Turn off the air pump 17 and the air control valve 1702, and turn on the air pump 18 and the air control valve 1802 to extract the gas inside the guide air bag 14 and make it flat. At this time, the antistatic liquid can pass over the guide air bag 14 to clean the powder on its surface. When the alarm on the collection box 8 sounds, the staff replaces the filter screen 1201 and cleans the powder in the collection box 8 at the same time.

[0047] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and its improved concept, should be covered within the scope of protection of this application.

Claims

1. A powder booth cleaning device for electrostatic spraying wheel hubs, comprising a powder booth (1), characterized in that, The inner wall of the powder chamber (1) is fixedly connected to a partition (2), and a trough (201) is opened in the middle of the partition (2). A grid (3) is fixedly connected to the inner wall of the trough (201). A conical guide plate (4) is fixedly connected to the inner wall of the powder chamber (1). A ring pipe (11) is fixedly connected to the top surface of the edge of the guide plate (4). Multiple uniformly distributed jet holes are opened on the side wall of the inner ring of the ring pipe (11). A collection pipe (5) is fixedly connected to the middle of the guide plate (4). A liquid pump (7) and a receiver are fixedly connected to the outer wall of the powder chamber (1). The collection tank (8) and the liquid pump (7) are located on the upper side of the collection tank (8). The inside of the collection tank (8) is filled with antistatic liquid. The side wall of the manifold (5) is fixedly connected to the input end of the liquid pump (7). The output end of the liquid pump (7) is fixedly connected to the drain pipe (9), and the drain pipe (9) extends to the inside of the collection tank (8). The collection tank (8) and the ring pipe (11) are fixedly connected to the reflow pipe (10). The liquid level of the antistatic liquid is higher than the top of the reflow pipe (10). The collection tank (8) is located on the upper side of the guide plate (4). A spiral-shaped air-guiding bag (14) is fixedly connected to the top surface of the guide plate (4). The outer ring of the air-guiding bag (14) is located inside the inner ring of the ring pipe (11). A main air pipe (15) with the same shape as the air-guiding bag (14) is fixedly connected to the bottom surface of the guide plate (4). A secondary air pipe (16) is fixedly connected to the outer wall of the main air pipe (15). The secondary air pipe (16) is connected to the main air pipe (15) and the air-guiding bag (14). The inner wall of the bottom end of the powder chamber (1) is fixed. An air pump (17) and an air pump (18) are connected. The output end of the air pump (17) is fixedly connected to an air inlet pipe (1701), and the input end of the air pump (18) is fixedly connected to an air outlet pipe (1801). The outer walls of the air inlet pipe (1701) and the air outlet pipe (1801) are respectively fixedly connected to an air inlet control valve (1702) and an air outlet control valve (1802), and both the air inlet pipe (1701) and the air outlet pipe (1801) are fixedly connected to a secondary air pipe (16).

2. The powder booth cleaning device for electrostatic spraying wheel hubs according to claim 1, characterized in that, The bottom end of the pipe (9) is located below the top end of the reflow pipe (10), and a tapered pipe is fixedly connected to the top end of the reflow pipe (10).

3. The powder booth cleaning device for electrostatic spraying wheel hubs according to claim 1, characterized in that, The inner wall of the collection box (8) is provided with a filter screen (1201), and a rubber ring (12) is fixedly connected to the outer wall of the filter screen (1201). The rubber ring (12) is sealed and slidably connected to the inner wall of the collection box (8). The drain pipe (9) and the reflow pipe (10) pass through the filter screen (1201) and are sealed and slidably connected to it.

4. The powder booth cleaning device for electrostatic spraying wheel hubs according to claim 3, characterized in that, A touch switch (13) is fixedly connected to the inner wall of the top of the collection box (8), and an alarm is fixedly connected to the outer wall of the collection box (8). The alarm is electrically connected to the touch switch (13).

5. A powder booth cleaning device for electrostatic spraying wheel hubs according to claim 4, characterized in that, A contact rod (1202) is fixedly connected to the top surface of the filter screen (1201), and the contact rod (1202) is located directly below the touch switch (13).

6. A cleaning method for a powder booth cleaning device for electrostatic spraying wheel hubs according to any one of claims 1-5, characterized in that, Includes the following steps: S1. Powder collection: Powder spraying is performed on the upper side of the grille (3), and the powder can fall through the grille (3) onto the surface of the guide plate (4); S2, Transfer Powder: Open the air pump (17) and air control valve (1702), close the air pump (18) and air control valve (1802), inflate the inside of the guide air bag (14), so that the antistatic liquid in the collection box (8) flows along the guide air bag (14) and spirals to the position of the collection pipe (5) under the action of gravity. At this time, the powder falling on the surface of the guide plate (4) will flow along the antistatic liquid to the position of the collection pipe (5). Start the liquid pump (7) to pump the antistatic liquid at the collection pipe (5) back to the inside of the collection box (8) through the suction pipe (6) and discharge pipe (9), so that the powder falling on the guide plate (4) can be collected into the collection box (8). S3. Self-cleaning: Turn off the air pump (17) and the air control valve (1702), turn on the air pump (18) and the air control valve (1802) to extract the gas inside the guide air bag (14) and make it flat. At this time, the antistatic liquid can pass over the guide air bag (14) to clean the powder on its surface. When the alarm on the collection box (8) sounds, the staff replaces the filter screen (1201) and cleans the powder in the collection box (8).

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