Hanging tool plastic removal circulating system

Abstract

The invention provides a hanger plastic removal circulating system which comprises plastic removal equipment, the plastic removal equipment comprises a plastic removal treatment tank, and a plastic removal agent is placed in the plastic removal treatment tank; a conveying chain is arranged above the plastic removal treatment tank, and a hanging tool is hung on the conveying chain. In the process that the hanging tool moves along with the conveying chain, the hanging tool is gradually immersed into the plastic removing agent; and cleaning equipment is arranged on one side of the plastic removal treatment tank and used for recycling the plastic removal agent on the hanging tool into the plastic removal treatment tank. And the height of the hanging tool is gradually reduced in the forward moving process until the hanging tool is immersed below the liquid level of the plastic removal agent in the plastic removal treatment tank. And under the action of the plastic removal agent, the hanger finishes plastic removal. According to the invention, the plastic removing agent is adopted to remove the plastic of the hanger, and the hanger does not need to be heated at high temperature, so that the hanger can be prevented from being deformed in a high-temperature environment, and the sizes of different hangers are not changed after plastic removal, thereby ensuring that the hangers after plastic removal have better consistency.

Description

Technical Field

[0001] The invention relates to the technical field of plastic stripping systems, in particular to a hanger plastic stripping circulation system. Background Art

[0002] The traditional method of deplasticizing hangers in spray-painted production lines is high-temperature decomposition. The principle of high-temperature decomposition is to burn the paint film at a high temperature of 450~500℃, so that the polymer in the paint film is degraded and burned and gasified, and the incombustible matter generates charred residue, thereby achieving deplasticization.

[0003] The high temperature decomposition method is prone to deformation of the hanger, poor consistency, and residual ash is prone to pitting and other quality problems. The high temperature decomposition method has high energy consumption and causes great pollution to the environment. In addition, the high temperature decomposition method requires manual removal of the hanger from the spraying line for processing, and the production line needs to prepare more than 50% of turnover hangers. The hangers need to be removed, replaced, transported and repaired, resulting in low plastic removal efficiency of the hangers.

[0004] Therefore, a hanger deplasticizing circulation system is needed which can prevent the hanger from deformation, has good consistency, and has high deplasticizing efficiency. Summary of the invention

[0005] In order to overcome the problems existing in the related art, the purpose of the present invention is to provide a hanger deplasticizing circulation system, which can prevent the hanger from deformation, has good consistency, and has high deplasticizing efficiency.

[0006] A hanger deplasticizing circulation system includes a deplasticizing device, the deplasticizing device includes a deplasticizing treatment tank, a deplasticizing agent is placed in the deplasticizing treatment tank; a conveyor chain is arranged above the deplasticizing treatment tank, a hanger is suspended on the conveyor chain, and the hanger is gradually immersed in the deplasticizing agent as the hanger moves with the conveyor chain; a cleaning device is arranged on one side of the deplasticizing treatment tank, and the cleaning device is used to recover the deplasticizing agent on the hanger into the deplasticizing treatment tank.

[0007] After the hanger enters the feed port, it moves forward with the conveyor chain. The hanger gradually lowers its height in the process of moving forward until the hanger is immersed below the liquid level of the deplasticizer in the deplasticization treatment tank. Under the action of the deplasticizer, the hanger completes deplasticization. After deplasticization, the hanger continues to move forward, passes through the discharge port and passes through the cleaning equipment, and the surface of the hanger still has deplasticizer, and the cleaning equipment cleans the surface of the hanger. After the cleaning equipment blows off the deplasticizer on the hanger, the deplasticizer flows back into the deplasticization treatment tank to achieve the recycling of the deplasticizer. Since the present invention uses a deplasticizer to deplasticize the hanger, it is not necessary to heat the hanger at a high temperature, which can prevent the hanger from being deformed in a high temperature environment, so that the dimensions of different hangers will not change after deplasticization, thereby ensuring that the hanger has good consistency after deplasticization. The present invention does not need to remove the hanger from the spraying line for processing, which reduces the processes of picking, replacing, carrying and repairing, so that the hanger deplasticization circulation system of the present invention has a higher deplasticization efficiency.

[0008] In a preferred technical solution of the present invention, the deplasticizing equipment further comprises a sedimentation tank, the sedimentation tank is located on a side of the deplasticizing treatment tank away from the conveying chain, and the sedimentation tank is connected to the deplasticizing treatment tank.

[0009] A sedimentation tank is provided below the plastic removal tank. After the hanger enters the feed port, it moves forward along with the conveyor chain until the hanger is immersed below the liquid level of the plastic removal agent in the plastic removal tank. Under the action of the plastic removal agent, the paint residue on the hanger is separated from the hanger and falls into the sedimentation tank. The paint residue accumulated in the sedimentation tank enters the sedimentation tank to realize the recovery of the paint residue obtained after the plastic removal treatment.

[0010] In a preferred technical solution of the present invention, a stirring device is provided in the deplasticizing treatment tank, and the stirring device is immersed below the liquid surface of the deplasticizing agent. The stirring device is used to stir the deplasticizing agent to increase the contact area between the deplasticizing agent and the hanger.

[0011] The above stirring device is used to stir the liquid deplasticizer in the deplasticization treatment tank so that the deplasticizer is in full contact with the hanger, thereby achieving full deplasticization of the hanger.

[0012] In a preferred technical solution of the present invention, the cleaning equipment includes a cleaning box, a discharge port is provided on the cleaning box, a high-pressure air outlet device is arranged on one side of the cleaning box close to the discharge port, the high-pressure air outlet device faces the discharge port, and the high-pressure air outlet device is used to blow off the plasticizer on the surface of the hanger.

[0013] When the hanger passes through the high-pressure air outlet device, the high-pressure air outlet device blows off the plastic release agent remaining on the hanger. A slope is arranged below the high-pressure air outlet device, and the blown plastic release agent flows back to the plastic release treatment tank along the slope to recover the plastic release agent, thereby realizing the recycling of the plastic release agent.

[0014] In a preferred technical solution of the present invention, a spray device is provided on a side of the cleaning box opposite to the high-pressure air outlet device, and the spray device is used to clean the hanger.

[0015] After the high-pressure air outlet device blows off the residual plasticizer on the hanger, the hanger continues to move forward along with the conveyor chain. When the hanger passes through the spray device, the nozzle of the spray device sprays cleaning liquid to clean the hanger.

[0016] In a preferred technical solution of the present invention, the hanger deplasticizing circulation system further includes a slag removal device, the slag removal device includes a slag trough, and a first filter residue pipeline is arranged between the slag trough and the sedimentation tank.

[0017] The paint residue in the sedimentation tank passes through the first filter residue pipeline and enters the sedimentation tank. The sedimentation tank adopts a high-position inclined plate sedimentation tank, which is a structure used to control the sedimentation speed of water flow to remove suspended matter. The principle of the high-position inclined plate sedimentation tank is to set a series of inclined plates to make the water flow rotate and turbulent in the channel, thereby increasing the contact area between water and paint residue and promoting the sedimentation of paint residue.

[0018] In a preferred technical solution of the present invention, an inclined plate is provided in the sedimentation tank, the inlet of the sedimentation tank is connected to the first filter residue pipeline, and the outlet of the sedimentation tank is connected to the second filter residue pipeline.

[0019] The paint residue after the secondary sedimentation treatment is pumped into the slag remover through the second filter residue pipeline for slag pressing treatment, so as to recover the paint residue after plastic removal.

[0020] In a preferred technical solution of the present invention, the slag removal device also includes a slag remover and a first recovery pipeline, the slag inlet of the slag remover is connected to the second filter residue pipeline, and the two ends of the first recovery pipeline are respectively connected to the recovery port of the slag remover and the deplasticization treatment tank.

[0021] Open the waste liquid port of the slag remover to allow the recovered liquid to flow into the solvent recovery machine. The solvent recovery machine processes the recovered liquid and stores the treated liquid in an isolated area to avoid environmental pollution caused by the discharge of waste liquid into the external environment. The waste residue remains in the slag remover. After the recovered liquid is discharged, the waste residue is discharged into the designated area. The side wall of the slag remover is provided with a water inlet and a slag outlet. The water inlet is used to supply water to the inside of the slag remover, and the slag outlet is used to discharge the waste residue in the slag remover.

[0022] In a preferred technical solution of the present invention, both the first filter residue pipeline and the second filter residue pipeline are provided with a slag removal circulation pump.

[0023] Under the action of the slag removal circulation pump on the first filter residue pipeline, the powdered paint residue in the sedimentation tank is pumped into the sedimentation tank through the first filter residue pipeline. The sedimentation tank performs secondary sedimentation treatment on the paint residue, and under the action of the slag removal circulation pump on the second filter residue pipeline, the paint residue after the secondary sedimentation treatment is pumped into the slag removal machine through the second filter residue pipeline for slag pressing treatment, thereby recovering the paint residue after plastic removal.

[0024] In a preferred technical solution of the present invention, the hanger deplasticizing circulation system also includes a shed body, the conveyor chain is located in the shed body, and the shed body is connected to an exhaust device; a feeding port is provided on one side of the shed body, and a discharge port is provided on the side of the shed body opposite to the feeding port; a first air sealing device is arranged near the feeding port, and a second air sealing device is arranged near the discharge port.

[0025] The exhaust device is used to exhaust the gas in the shed, and the first air sealing device and the second air sealing device are used to reduce or prevent the leakage of working medium such as gas to ensure the normal operation of the hanger deplasticizing circulation system.

[0026] In a preferred technical solution of the present invention, the hanger deplasticizing circulation system also includes a second recovery pipe, a first end of the second recovery pipe is connected to the sediment tank, and a second end of the second recovery pipe is connected to the deplasticizing treatment tank.

[0027] The upper clear liquid in the sedimentation tank contains a plasticizer, and the plasticizer in the sedimentation tank is recovered into the plasticizer treatment tank through a second recovery pipeline.

[0028] The beneficial effects of the present invention are as follows: the present invention provides a hanger deplasticization circulation system, comprising a deplasticization device, the deplasticization device comprising a deplasticization treatment tank, wherein a deplasticizer is placed in the deplasticization treatment tank; a conveyor chain is arranged above the deplasticization treatment tank, a hanger is suspended on the conveyor chain, and the hanger gradually immerses in the deplasticizer during the process of the hanger moving along with the conveyor chain; a cleaning device is arranged on one side of the deplasticization treatment tank, and the cleaning device is used to recover the deplasticizer on the hanger into the deplasticization treatment tank. After the hanger enters the feed port, it moves forward along with the conveyor chain. During the process of moving forward, the hanger gradually lowers its height until the hanger is immersed below the liquid surface of the deplasticizer in the deplasticization treatment tank. Under the action of the deplasticizer, the hanger completes deplasticization. After the hanger is deplasticized, it continues to move forward, passes through the discharge port and passes through the cleaning device, and the deplasticizer still remains on the surface of the hanger, and the cleaning device cleans the surface of the hanger. After the cleaning device blows off the deplasticizer on the hanger, the deplasticizer flows back to the deplasticization treatment tank to realize the recycling of the deplasticizer. Since the present invention uses a plasticizer to deplasticize the hanger, it is not necessary to heat the hanger at high temperature, which can prevent the hanger from being deformed in a high temperature environment, so that the dimensions of different hangers will not change after deplasticization, thereby ensuring that the hangers have good consistency after deplasticization. The present invention does not need to remove the hanger from the spraying line for processing, which reduces the processes of picking, replacing, transporting and repairing, so that the hanger deplasticization circulation system of the present invention has a higher deplasticization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the hanger deplasticizing circulation system of the present invention; Figure 2 is a connection diagram of the slag removal device of the present invention; Figure 3 It is a schematic diagram of the recovery of plasticizer and waste residue according to the present invention.

[0030] Figure numerals: 1. deplasticizing treatment tank; 2. deplasticizing agent; 3. conveyor chain; 4. hanger; 5. feed port; 6. discharge port; 7. sedimentation tank; 8. stirring device; 9. cleaning box; 10. high-pressure air outlet device; 11. spray device; 12. sediment tank; 13. first filter residue pipeline; 14. inclined plate; 15. second filter residue pipeline; 16. slag remover; 17. first recovery pipeline; 18. slag removal circulation pump; 19. shed; 20. exhaust device; 21. first air sealing device; 22. second air sealing device; 23. waste liquid port; 24. water inlet; 25. slag outlet; 26. second recovery pipeline. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0032] Example 1

[0033] like Figure 1 As shown, the present embodiment provides a hanger deplasticizing circulation system, including a deplasticizing device, wherein the deplasticizing device includes a deplasticizing treatment tank 1, in which a deplasticizing agent 2 is placed; a conveying chain 3 is arranged above the deplasticizing treatment tank 1, and a hanger 4 is suspended on the conveying chain 3, and as the hanger 4 moves along with the conveying chain 3, the hanger 4 gradually immerses into the deplasticizing agent 2; a cleaning device is arranged on one side of the deplasticizing treatment tank 1, and the cleaning device is used to recover the deplasticizing agent 2 on the hanger 4 into the deplasticizing treatment tank 1.

[0034] The conveyor chain 3 is arranged horizontally, and a plurality of hangers 4 are hung on the conveyor chain 3. Driven by the conveyor chain 3, all the hangers 4 move forward. The deplasticizing treatment tank 1 is located below the conveyor chain 3 and has a horizontal plane, and both sides of the horizontal plane are slopes, so that the deplasticizing treatment tank 1 has a certain slope. The conveyor chain 3 between the feeding port 5 and the discharging port 6 is divided into three sections, the first section is inclined downward, and the inclination angle of the first section is the same as the angle of the first slope of the deplasticizing treatment tank 1; the second section is arranged horizontally, and the section is arranged relative to the horizontal plane of the deplasticizing treatment tank 1; the third section is inclined upward, and the inclination angle of the third section is the same as the angle of the second slope of the deplasticizing treatment tank 1.

[0035] After the hanger 4 enters the feed port 5, it moves forward along with the conveyor chain 3. Since the first section of the conveyor chain 3 is tilted downward, the hanger 4 moves both forward and downward, so that the hanger 4 gradually descends until the hanger 4 is immersed below the liquid level of the deplasticizer 2 in the deplasticization treatment tank 1. The second section of the conveyor chain 3 is horizontally arranged and has a longer length. The hanger 4 moves forward in the second section of the conveyor chain 3. During this process, the hanger 4 is always immersed below the liquid level of the deplasticizer 2 in the deplasticization treatment tank 1, so that the hanger 4 and the deplasticizer 2 have sufficient reaction time, so that the hanger 4 completes the deplasticization. After the hanger 4 completes the deplasticization, it moves both forward and upward along the third section of the conveyor chain 3, so that the hanger 4 is separated from the liquid level of the deplasticizer 2 until the hanger 4 enters the discharge port 6.

[0036] The fourth section of the conveyor chain 3 is horizontally arranged, and the hanger 4 moves horizontally on the fourth section of the conveyor chain 3. The hanger 4 passes through the cleaning device, and the cleaning device blows air to the surface of the hanger 4, so that the plastic release agent 2 on the surface of the hanger 4 falls off. A slope is arranged below the cleaning device, and the fallen plastic release agent 2 flows along the slope into the plastic release treatment tank 1, and the plastic release agent 2 on the surface of the hanger 4 can be recovered, thereby realizing the recycling of the plastic release agent 2.

[0037] The present embodiment provides a hanger deplasticization circulation system, including a deplasticization device, the deplasticization device including a deplasticization treatment tank 1, in which a deplasticizer 2 is placed; a conveyor chain 3 is arranged above the deplasticization treatment tank 1, and a hanger 4 is suspended on the conveyor chain 3, and the hanger 4 gradually immerses in the deplasticizer 2 during the process of the hanger 4 moving along with the conveyor chain 3. A cleaning device is arranged on one side of the deplasticization treatment tank 1, and the cleaning device is used to recover the deplasticizer 2 on the hanger 4 into the deplasticization treatment tank 1. After the hanger 4 enters the feed port 5, it moves forward along with the conveyor chain 3. The hanger 4 gradually lowers its height during the forward movement until the hanger 4 is immersed below the liquid level of the deplasticizer 2 in the deplasticization treatment tank 1. Under the action of the deplasticizer 2, the hanger 4 completes deplasticization. After deplasticization, the hanger 4 continues to move forward, passes through the discharge port 6 and the cleaning device, and the deplasticizer 2 is still left on the surface of the hanger 4, and the cleaning device cleans the surface of the hanger 4. After the cleaning equipment blows off the deplasticizer 2 on the hanger 4, the deplasticizer 2 flows back into the deplasticization processing tank 1 to realize the recycling of the deplasticizer 2. Since the present invention uses the deplasticizer 2 to deplasticize the hanger 4, it is not necessary to heat the hanger 4 at high temperature, which can prevent the hanger 4 from deforming in a high temperature environment, so that the dimensions of different hangers 4 will not change after deplasticization, thereby ensuring that the hangers 4 have good consistency after deplasticization. The present invention does not need to remove the hanger 4 from the spray line for processing, which reduces the processes of picking, replacing, transporting and repairing, so that the hanger deplasticization circulation system of the present invention has a higher deplasticization efficiency.

[0038] Example 2

[0039] like Figure 1-Figure 2 As shown, the present embodiment provides a hanger deplasticizing circulation system, including a deplasticizing device, wherein the deplasticizing device includes a deplasticizing treatment tank 1, in which a deplasticizing agent 2 is placed; a conveying chain 3 is arranged above the deplasticizing treatment tank 1, and a hanger 4 is suspended on the conveying chain 3, and as the hanger 4 moves along with the conveying chain 3, the hanger 4 gradually immerses into the deplasticizing agent 2; a cleaning device is arranged on one side of the deplasticizing treatment tank 1, and the cleaning device is used to recover the deplasticizing agent 2 on the hanger 4 into the deplasticizing treatment tank 1.

[0040] The deplasticizing device further comprises a sedimentation tank 7 , which is located at a side of the deplasticizing tank 1 away from the conveying chain 3 , and the sedimentation tank 7 is communicated with the deplasticizing tank 1 .

[0041] A stirring device 8 is provided in the deplasticizing tank 1 . The stirring device 8 is immersed below the liquid surface of the deplasticizing agent 2 . The stirring device 8 is used to stir the deplasticizing agent 2 to increase the contact area between the deplasticizing agent 2 and the hanger 4 .

[0042] A settling tank 7 is provided below the plastic removal tank 1. After the hanger 4 enters the feed port, it moves forward along with the conveyor chain 3 until the hanger 4 is immersed below the liquid surface of the plastic removal agent 2 in the plastic removal tank 1. Under the action of the plastic removal agent 2, the paint residue on the hanger 4 is separated from the hanger 4 and falls into the settling tank 7. The paint residue accumulated in the settling tank 7 enters the sedimentation tank 12 to realize the recovery of the paint residue obtained after the plastic removal treatment.

[0043] The sedimentation tank 7 is an inverted cone hopper structure, and the angle between the inclined inner wall of the sedimentation tank 7 and the bottom plate is 10-15 degrees, so as to facilitate the sedimentation of paint residues. Multiple sedimentation tanks 7 can be set, and the tops of all sedimentation tanks 7 are connected to the deplasticizing treatment tank 1 to recover the paint residues at different positions of the deplasticizing treatment tank 1, and the distance between adjacent sedimentation tanks 7 is 2.5-3m.

[0044] The stirring device 8 is composed of a circulating material pump, a mixed flow nozzle and a regulating valve. The bottom of the deplasticizing treatment tank 1 is provided with a suction port and a mixed flow nozzle. The deplasticizing agent 2 is pumped into the mixed flow nozzle according to the running direction of the conveying chain 3 by the circulating material pump. The deplasticizing agent 2 enters the deplasticizing treatment tank 1 through the mixed flow nozzle, so that the upper and lower layers of the liquid in the deplasticizing treatment tank 1 form a circulation, and the circulation flow rate is greater than 2 times / h. A row of mixed flow nozzles is arranged at intervals of 2-2.5m on both sides of the deplasticizing treatment tank 1. The nozzles on the front and rear mixed flow nozzles are staggered in height, with a spacing of 250-300mm, and adjustable in direction. Multiple nozzles are used to rinse the back of the passing hanger 4 to ensure that each part of the hanger 4 is effectively rinsed to improve the effect of the paint stripping treatment. The inlet of each mixed flow nozzle outside the deplasticizing treatment tank 1 is equipped with a regulating valve, and the flushing pressure at different positions in the deplasticizing treatment tank 1 can be adjusted according to demand.

[0045] The stirring device 8 is used to stir the liquid deplasticizer 2 in the deplasticization treatment tank 1 so that the deplasticizer 2 is in full contact with the hanger 4 , thereby achieving full deplasticization of the hanger 4 .

[0046] The deplasticizing equipment of this embodiment also includes a sedimentation tank 7, which is located on the side of the deplasticizing treatment tank 1 away from the conveying chain 3, and the sedimentation tank 7 is connected to the deplasticizing treatment tank 1. A stirring device 8 is provided in the deplasticizing treatment tank 1, and the stirring device 8 is immersed below the liquid surface of the deplasticizing agent 2. The stirring device 8 is used to stir the deplasticizing agent 2 to increase the contact area between the deplasticizing agent 2 and the hanger 4, so that the deplasticizing agent 2 is in full contact with the hanger 4, thereby achieving full deplasticization of the hanger 4. Under the action of the deplasticizing agent 2, the paint residue on the hanger 4 is separated from the hanger 4 and falls into the sedimentation tank 7. The paint residue accumulated in the sedimentation tank 7 enters the sedimentation tank 12 to achieve the recovery of the paint residue obtained after the deplasticizing treatment.

[0047] Example 3

[0048] like Figure 1-Figure 2 As shown, the present embodiment provides a hanger deplasticizing circulation system, including a deplasticizing device, wherein the deplasticizing device includes a deplasticizing treatment tank 1, in which a deplasticizing agent 2 is placed; a conveying chain 3 is arranged above the deplasticizing treatment tank 1, and a hanger 4 is suspended on the conveying chain 3, and as the hanger 4 moves along with the conveying chain 3, the hanger 4 gradually immerses into the deplasticizing agent 2; a cleaning device is arranged on one side of the deplasticizing treatment tank 1, and the cleaning device is used to recover the deplasticizing agent 2 on the hanger 4 into the deplasticizing treatment tank 1.

[0049] The cleaning equipment includes a cleaning box 9, which is provided with a discharge port 6. A high-pressure air outlet device 10 is provided on one side of the cleaning box 9 close to the discharge port 6. The high-pressure air outlet device 10 faces the discharge port 6 and is used to blow off the release agent 2 on the surface of the hanger 4.

[0050] A spray device 11 is provided on a side of the cleaning box 9 opposite to the high-pressure air outlet device 10 , and the spray device 11 is used to clean the hanger 4 .

[0051] A high-pressure air outlet device 10 and a spray device 11 are provided in the cleaning box 9. After the hanger 4 enters the discharge port 6, the hanger 4 continues to move forward along with the conveyor chain 3. When the hanger 4 passes through the high-pressure air outlet device 10, the high-pressure air outlet device 10 blows off the residual plasticizer 2 on the hanger 4. A slope is provided below the high-pressure air outlet device 10, and the blown-off plasticizer 2 flows back to the plasticizer processing tank 1 along the slope to recover the plasticizer 2, thereby realizing the recycling of the plasticizer 2.

[0052] After the high-pressure air outlet device 10 blows off the residual plasticizer 2 on the hanger 4, the hanger 4 continues to move forward along with the conveyor chain 3. When the hanger 4 passes through the spray device 11, the nozzle of the spray device 11 sprays cleaning liquid to clean the hanger 4. A drain pipe is provided at the bottom of the spray device 11, and a control valve is provided on the side wall outside the drain pipe. The control valve can be adjusted to adjust the flow of the drain pipe, and the waste liquid is collected and stored in the waste liquid recovery box by the drain pipe to avoid environmental pollution caused by the waste liquid being discharged into the external environment.

[0053] Preferably, a draining section is provided between the plastic removal tank 1 and the cleaning device, the draining time of the draining section is 30-45s, and a water dripping plate is provided at the bottom to allow the draining liquid to flow back to the plastic removal tank 1. Figure 1 In the area between the liquid surface of the deplasticizing treatment tank 1 and the discharge port 6, the hanger 4 below the liquid surface of the deplasticizing treatment tank 1 moves obliquely upward along with the conveying chain 3, and during this process, the hanger 4 gradually separates from the liquid surface of the deplasticizing agent 2 in the deplasticizing treatment tank 1. When the hanger 4 is located above the liquid surface of the deplasticizing treatment tank 1, the hanger 4 is no longer in contact with the deplasticizing agent 2, and the hanger 4 continues to move obliquely upward along with the conveying chain 3 until the hanger 4 enters the discharge port 6, during which the deplasticizing agent 2 on the surface of the hanger 4 drips downward, causing the surface of the hanger 4 to drain.

[0054] The cleaning equipment of this embodiment includes a cleaning box 9, on which a discharge port 6 is provided, and the discharge port 6 is connected to the inside of the cleaning box 9. A high-pressure air outlet device 10 is provided on the side of the cleaning box 9 close to the discharge port 6, and the high-pressure air outlet device 10 faces the discharge port 6. The high-pressure air outlet device 10 is used to blow off the plastic release agent 2 on the surface of the hanger 4. A spray device 11 is provided on the side of the cleaning box 9 opposite to the high-pressure air outlet device 10, and the spray device 11 is used to clean the hanger 4. When the hanger 4 passes through the high-pressure air outlet device 10, the high-pressure air outlet device 10 blows off the plastic release agent 2 remaining on the hanger 4. A slope is provided below the high-pressure air outlet device 10, and the blown-off plastic release agent 2 flows back to the plastic release treatment tank 1 along the slope to recover the plastic release agent 2, thereby realizing the recycling of the plastic release agent 2. After the high-pressure air outlet device 10 blows off the plastic release agent 2 remaining on the hanger 4, the hanger 4 continues to move forward along with the conveyor chain 3. When the hanger 4 passes through the spray device 11, the nozzle of the spray device 11 sprays cleaning liquid to clean the hanger 4.

[0055] Example 4

[0056] like Figure 1-Figure 2As shown, the present embodiment provides a hanger deplasticizing circulation system, including a deplasticizing device, wherein the deplasticizing device includes a deplasticizing treatment tank 1, in which a deplasticizing agent 2 is placed; a conveying chain 3 is arranged above the deplasticizing treatment tank 1, and a hanger 4 is suspended on the conveying chain 3, and as the hanger 4 moves along with the conveying chain 3, the hanger 4 gradually immerses into the deplasticizing agent 2; a cleaning device is arranged on one side of the deplasticizing treatment tank 1, and the cleaning device is used to recover the deplasticizing agent 2 on the hanger 4 into the deplasticizing treatment tank 1.

[0057] The deplasticizing device further comprises a sedimentation tank 7 , which is located at a side of the deplasticizing tank 1 away from the conveying chain 3 , and the sedimentation tank 7 is communicated with the deplasticizing tank 1 .

[0058] like Figure 2 As shown, the hanger deplasticizing circulation system further includes a slag removal device, which includes a slag trough 12 , and a first filter residue pipeline 13 is arranged between the slag trough 12 and the precipitation tank 7 .

[0059] An inclined plate 14 is disposed in the sediment tank 12 . The inlet of the sediment tank 12 is connected to the first filter residue pipeline 13 , and the outlet of the sediment tank 12 is connected to the second filter residue pipeline 15 .

[0060] The two ends of the sedimentation tank 7 are respectively connected to the plastic removal treatment tank 1 and the sedimentation tank 12. After the hanger 4 is immersed in the plastic removal treatment tank 1, the plastic removal agent 2 in the plastic removal treatment tank 1 deplasticizes the hanger 4, and the paint residue on the hanger 4 falls into the sedimentation tank 7 through the plastic removal treatment tank 1. The paint residue in the sedimentation tank 7 enters the sedimentation tank 12 through the first filter residue pipeline 13. The sedimentation tank 12 of this embodiment adopts a high-position inclined plate sedimentation tank, which is a structure used to control the sedimentation speed of water flow to remove suspended matter. The principle of the high-position inclined plate sedimentation tank is to set a series of inclined plates 14 to make the water flow rotate and turbulent in the channel, thereby increasing the contact area between water and paint residue and promoting the sedimentation of paint residue. After sedimentation and separation, the liquid plastic removal agent 2 flows back to the plastic removal tank 1, and the solid paint residue will be pumped into the slag remover 16 for recovery.

[0061] Preferably, a transparent bypass pipe is provided at the bottom of the sediment tank 12 as an observation port. During operation, the upper clarified liquid in the sediment tank 12 can be directly pumped back to the plastic removal treatment tank 1 without passing through the sediment, thereby reducing the processing volume while recovering the plastic removal agent 2.

[0062] The hanger deplasticizing circulation system of the present embodiment also includes a slag removal device, which includes a slag trough 12, and a first filter residue pipeline 13 is arranged between the slag trough 12 and the sedimentation tank 7. An inclined plate 14 is arranged in the slag trough 12, and the inlet of the slag trough 12 is connected to the first filter residue pipeline 13, and the outlet of the slag trough 12 is connected to the second filter residue pipeline 15. The slag trough 12 is provided with a series of inclined plates 14, so that the water flow generates rotation and turbulence in the channel, thereby increasing the contact area between water and paint residue, and promoting the sedimentation of paint residue. After sedimentation and separation, the liquid deplasticizer 2 flows back to the deplasticizing treatment tank 1, and the solid paint residue will be pumped into the deslag remover 16 for recovery.

[0063] Example 5

[0064] like Figure 1-Figure 2 As shown, the present embodiment provides a hanger deplasticizing circulation system, including a deplasticizing device, wherein the deplasticizing device includes a deplasticizing treatment tank 1, in which a deplasticizing agent 2 is placed; a conveying chain 3 is arranged above the deplasticizing treatment tank 1, and a hanger 4 is suspended on the conveying chain 3, and as the hanger 4 moves along with the conveying chain 3, the hanger 4 gradually immerses into the deplasticizing agent 2; a cleaning device is arranged on one side of the deplasticizing treatment tank 1, and the cleaning device is used to recover the deplasticizing agent 2 on the hanger 4 into the deplasticizing treatment tank 1.

[0065] The deplasticizing device further comprises a sedimentation tank 7 , which is located at a side of the deplasticizing tank 1 away from the conveying chain 3 , and the sedimentation tank 7 is communicated with the deplasticizing tank 1 .

[0066] The plastic removal circulation system of the hanger 4 also includes a slag removal device, which includes a slag trough 12 , and a first filter residue pipeline 13 is arranged between the slag trough 12 and the precipitation tank 7 .

[0067] An inclined plate 14 is disposed in the sediment tank 12 . The inlet of the sediment tank 12 is connected to the first filter residue pipeline 13 , and the outlet of the sediment tank 12 is connected to the second filter residue pipeline 15 .

[0068] The slag removal device also includes a slag remover 16 and a first recovery pipeline 17. The slag inlet of the slag remover 16 is connected to the second filter residue pipeline 15, and both ends of the first recovery pipeline 17 are respectively connected to the recovery port of the slag remover 16 and the deplasticizing treatment tank 1.

[0069] The plastic removal circulation system of the hanger 4 further includes a second recovery pipe 26 , a first end of the second recovery pipe 26 is connected to the sediment tank 12 , and a second end of the second recovery pipe 26 is connected to the plastic removal treatment tank 1 .

[0070] like Figure 2As shown, the side wall of the upper part of the sedimentation tank 12 is also connected to a second recovery pipe 26, the first end of the second recovery pipe 26 is connected to the clear liquid in the upper layer of the sedimentation tank 12, and the second end of the second recovery pipe 26 is connected to the plastic removal treatment tank 1. The clear liquid in the upper layer of the sedimentation tank 12 contains the plastic removal agent 2, and the second recovery pipe 26 is provided to recover the plastic removal agent 2 in the sedimentation tank 12 into the plastic removal treatment tank 1.

[0071] The first filter residue pipeline 13 and the second filter residue pipeline 15 are both provided with a slag removal circulation pump 18 .

[0072] The hanger deplasticizing circulation system also includes a shed body 19, the conveyor chain 3 is located inside the shed body 19, and the shed body 19 is connected to an exhaust device 20; a feed port 5 is provided on one side of the shed body 19, and a discharge port 6 is provided on the side of the shed body 19 opposite to the feed port 5; a first air sealing device 21 is provided near the feed port 5, and a second air sealing device 22 is provided near the discharge port 6.

[0073] The slag remover 16 of this embodiment adopts a continuous plate type slag remover 16, and the slag removal circulation pump 18 adopts a pneumatic diaphragm pump. Under the action of the slag removal circulation pump 18 on the first filter residue pipeline 13, the powdered paint residue in the sedimentation tank 7 is pumped into the sedimentation tank 12 through the first filter residue pipeline 13. The sedimentation tank 12 performs secondary sedimentation treatment on the paint residue, and under the action of the slag removal circulation pump 18 on the second filter residue pipeline 15, the paint residue after the secondary sedimentation treatment is pumped into the slag remover 16 through the second filter residue pipeline 15 for slag pressing treatment, thereby recovering the paint residue after plastic removal.

[0074] like Figure 3 As shown, the main component of the upper clear liquid inside the sediment tank 12 is the plasticizer 2, and the lower sediment includes paint residue and waste liquid. The slag removal circulation pump 18 on the second filter residue pipeline 15 draws the lower sediment into the slag remover 16, and the slag remover 16 presses the lower sediment to obtain waste residue and recovered liquid. The waste liquid port 23 of the slag remover 16 is opened to allow the recovered liquid to flow into the solvent recovery machine. The solvent recovery machine processes the recovered liquid and stores the treated liquid in an isolated area to avoid environmental pollution caused by the waste liquid being discharged into the external environment. The waste residue remains in the slag remover 16, and after the recovered liquid is discharged, the waste residue is discharged into a designated area. The side wall of the slag remover 16 is provided with a water inlet 24 and a slag outlet 25. The water inlet 24 is used to supply water to the inside of the slag remover 16, and the slag outlet 25 is used to discharge the waste residue in the slag remover 16.

[0075] The body of the deplasticizing treatment tank 1 adopts a double-layer structure, and 50-80mm thick rock wool is filled between the inner and outer plates for thermal insulation. The body of the deplasticizing treatment tank 1 adopts a ship-shaped structure, and the slope of the outlet and inlet of the tank is designed to be 30-40°. The width of the body of the deplasticizing treatment tank 1 is calculated as follows: based on the maximum hanger width of the coating line + the installation spacing of the mixed flow nozzle + 80-120mm safety spacing is reserved on both sides. The height of the tank is calculated as follows: the height from the top hanging point of the hanger 4 to the bottom end of the hanger 4 + the height from the hanging point to the tank cover + the height from the bottom end of the hanger 4 to the bottom plane of the tank. The height range from the hanging point to the tank cover is 250-300mm, and the spacing of the bottom mixed flow nozzle installation height is 100-150mm.

[0076] The top of the tank is open except for the up and down slope sections. The middle soaking section is designed as a semi-enclosed structure that can be opened on both sides. Only a space is left in the middle for the main rod of the hanger 4 to pass through, and the effective spacing W ranges from 30 to 50 mm. The cover is designed as a structure with a high middle and low sides. The cover can isolate the soaking tank from the conveyor chain 3 of the coating line, and reduce the influence of the liquid surface wind speed of the release agent 2 in the shed 19 on the volatilization of the liquid.

[0077] The exhaust device 20 is used to exhaust the gas in the shed 19, and the first air sealing device 21 and the second air sealing device 22 are used to reduce or prevent the leakage of the working medium such as gas to ensure the normal operation of the plastic release circulation system of the hanger 4.

[0078] The deslagging device of this embodiment also includes a deslagging machine 16 and a first recovery pipe 17. The slag inlet of the deslagging machine 16 is connected to the second filter residue pipe 15. Both ends of the first recovery pipe 17 are respectively connected to the recovery port of the deslagging machine 16 and the plastic removal treatment tank 1. The first filter residue pipe 13 and the second filter residue pipe 15 are both provided with a deslagging circulation pump 18. The main component of the upper clear liquid inside the sediment tank 12 is the plastic release agent 2, and the lower sediment includes paint residue and waste liquid. The deslagging circulation pump 18 on the second filter residue pipe 15 draws the lower sediment into the deslagging machine 16, and the deslagging machine 16 presses the lower sediment to obtain waste residue and recovered liquid.

[0079] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a restriction. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in the subsequent accompanying drawings.

[0080] It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would then be positioned "below" or "below" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device may also be oriented in other different ways (rotated 90 degrees or at other orientations), and the spatially relative descriptions used herein should be interpreted accordingly.

[0081] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hanger deplasticizing circulation system, characterized in that: It comprises a deplasticizing device, which comprises a deplasticizing treatment tank, in which a deplasticizing agent is placed; a conveying chain is arranged above the deplasticizing treatment tank, a hanger is hung on the conveying chain, and as the hanger moves along with the conveying chain, the hanger is gradually immersed in the deplasticizing agent; a cleaning device is arranged on one side of the deplasticizing treatment tank, and the cleaning device is used to recover the deplasticizing agent on the hanger into the deplasticizing treatment tank.

2. The hanger deplasticizing circulation system according to claim 1, characterized in that: The deplasticizing equipment further comprises a sedimentation tank, which is located at a side of the deplasticizing treatment tank away from the conveying chain, and the sedimentation tank is communicated with the deplasticizing treatment tank.

3. The hanger deplasticizing circulation system according to claim 1, characterized in that: A stirring device is arranged in the deplasticizing tank, and the stirring device is immersed below the liquid surface of the deplasticizing agent. The stirring device is used to stir the deplasticizing agent to increase the contact area between the deplasticizing agent and the hanger.

4. The hanger deplasticizing circulation system according to claim 1, characterized in that: The cleaning equipment includes a cleaning box, which is provided with a discharge port. A high-pressure air outlet device is arranged on one side of the cleaning box close to the discharge port, the high-pressure air outlet device faces the discharge port, and is used to blow off the plasticizing agent on the surface of the hanger.

5. The hanger deplasticizing circulation system according to claim 4, characterized in that: A spray device is provided on a side of the cleaning box opposite to the high-pressure air outlet device, and the spray device is used to clean the hanger.

6. The hanger deplasticizing circulation system according to claim 2, characterized in that: It also includes a slag removal device, which includes a slag trough, and a first filter residue pipeline is arranged between the slag trough and the precipitation tank.

7. The hanger deplasticizing circulation system according to claim 6, characterized in that: An inclined plate is arranged in the sediment tank, the inlet of the sediment tank is connected to the first filter residue pipeline, and the outlet of the sediment tank is connected to the second filter residue pipeline.

8. The hanger deplasticizing circulation system according to claim 7, characterized in that: The slag removal device also includes a slag remover and a first recovery pipeline. The slag inlet of the slag remover is connected to the second filter residue pipeline, and both ends of the first recovery pipeline are respectively connected to the recovery port of the slag remover and the deplasticization treatment tank.

9. The hanger deplasticizing circulation system according to claim 7, characterized in that: The first filter residue pipeline and the second filter residue pipeline are both provided with a slag removal circulation pump.

10. The hanger deplasticizing circulation system according to claim 1, characterized in that: It also includes a shed body, the conveyor chain is located in the shed body, and the shed body is connected to an exhaust device; a feed port is opened on one side of the shed body, and a discharge port is opened on the side of the shed body opposite to the feed port; a first air sealing device is arranged near the feed port, and a second air sealing device is arranged near the discharge port.

11. The hanger deplasticizing circulation system according to claim 6, characterized in that: It also includes a second recovery pipe, a first end of which is connected to the sediment tank, and a second end of which is connected to the deplasticizing tank.

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