A waste solvent recovery device for an automobile painting line

By introducing a distillation tank heating, filtration, condensation, and stirring device into the waste solvent recovery unit of the automotive painting line, the problem of filter clogging was solved, achieving efficient waste solvent recovery and cleaning, and improving work efficiency.

CN224404382UActive Publication Date: 2026-06-26WUHAN SHENGHUI ELECTROMECHANICAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUHAN SHENGHUI ELECTROMECHANICAL TECH CO LTD
Filing Date
2025-06-19
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In existing automotive painting line waste solvent recovery devices, the filters become clogged due to excessive use, affecting work efficiency and making them difficult to clean.

Method used

The waste solvent is heated by a distillation tank heating device, filtered by a filtration device, collected by a condenser device, and then stirred and heated by a stirring device. Finally, the filtration device is cleaned.

Benefits of technology

It achieves efficient filtration and recovery of waste solvents, improves work efficiency, and solves the problem of cleaning the filtration device.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224404382U_ABST
    Figure CN224404382U_ABST
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Abstract

The utility model relates to the technical field of waste solvent recovery unit, especially, it is a kind of waste solvent recovery unit of automobile coating line, it provides processing place to waste solvent by distillation barrel, waste solvent inside distillation barrel is heated by heating device, waste solvent is filtered by filtering device, the solvent after distillation in distillation barrel is condensed and collected by condensing device, waste solvent inside distillation barrel is stirred by stirring device, filtering device is cleaned by cleaning device;Including operation platform;It further includes distillation barrel, heating device, filtering device, condensing device, stirring device and cleaning device, distillation barrel and condensing device are all installed on operation platform, heating device, filtering device, stirring device and cleaning device are all installed on distillation barrel;Distillation barrel provides processing place, heating device heats, filtering device filters, condensing device distills and collects, stirring device stirs, and cleaning device cleans.
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Description

Technical Field

[0001] This utility model relates to the technical field of waste solvent recovery devices, and in particular to a waste solvent recovery device for an automotive painting line. Background Technology

[0002] Solvent-based coatings are widely used in automotive painting, which generates a large amount of waste containing organic solvents during the painting process. However, these waste solvents can harm the environment and human health, and also pose safety risks. It is necessary to recycle and treat the waste solvents. Therefore, waste solvent recycling devices for automotive painting lines have emerged.

[0003] For example, in a prior art represented by application number CN202322367584.3, the main structure includes a housing and a distillation cylinder embedded in one side. An electric heating base is located at the bottom of the housing, contacting the bottom of the distillation cylinder. A collection box is attached to one side of the housing. An inner cylinder is located inside the distillation cylinder, and an inclined elastic mesh plate is located inside the inner cylinder. A discharge frame is connected to one side of the inner cylinder. In this invention, the inclined elastic mesh plate, discharge frame, collection box, discharge pipe, and impact component work together. The inclined elastic mesh plate filters solid impurities in the waste solvent, preventing them from affecting the heating process. The impact component strikes the inclined elastic mesh plate, allowing solid impurities to smoothly enter the collection box for collection. The separated solute remains at the bottom of the inner cylinder. Opening the solenoid valve discharges the solute into the collection box through the discharge pipe, thereby improving the waste solvent recovery effect.

[0004] During use, it was found that excessive use of the filter screen would cause the filter plate to become clogged. Existing waste solvent recovery devices are inconvenient for cleaning the filter plate, which affects work efficiency. Therefore, there is an urgent need for a waste solvent recovery device for automotive painting lines. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a waste solvent recovery device for an automotive painting line, which provides a treatment site for waste solvent through a distillation tank, heats the waste solvent inside the distillation tank through a heating device, filters the waste solvent through a filtration device, condenses and collects the distilled solvent inside the distillation tank through a condensation device, stirs the waste solvent inside the distillation tank through a stirring device, and cleans the filtration device through a cleaning device.

[0006] This utility model discloses a waste solvent recovery device for an automotive painting line, comprising an operating table; and further comprising a distillation tank, a heating device, a filtering device, a condensing device, a stirring device, and a cleaning device. The distillation tank and condensing device are both mounted on the operating table, while the heating device, filtering device, stirring device, and cleaning device are all mounted on the distillation tank. The distillation tank provides a processing area for waste solvents; the heating device heats the waste solvent inside the distillation tank; the filtering device filters the waste solvent; the condensing device condenses and collects the distilled solvent inside the distillation tank; the stirring device stirs the waste solvent inside the distillation tank; and the cleaning device cleans the filtering device.

[0007] Preferably, the operating table includes a base, which is installed in the working area and has a slag discharge port; the base provides support.

[0008] Preferably, the distillation tank includes a tank body, a slag discharge pipe, a first pipe, a tank cover, a feed pipe, and an exhaust pipe. The tank body is mounted on a base, the slag discharge pipe is connected to and mounted on the side of the tank body, the first pipe is connected to and mounted on the bottom of the tank body, and a valve is installed on the first pipe. The tank cover is mounted on the top of the tank body, the feed pipe and the exhaust pipe are connected and mounted on the top of the tank cover, and a valve is installed on the feed pipe. When the feed pipe is opened, the waste solvent enters through the input end of the feed pipe and is fed into the interior of the tank body. When the valve is opened, the residual solvent is discharged through the output end of the first pipe, and the vapor is discharged through the exhaust pipe.

[0009] Preferably, the heating device includes a heater, which is fitted onto the outer wall of the barrel and equipped with a controller; the controller controls the heater to heat the waste solvent inside the barrel.

[0010] Preferably, the filtration device includes a telescopic shaft, a spring, and a filter plate. The telescopic shaft is installed inside the barrel, the spring is fitted onto the telescopic shaft, and the filter plate is installed at the top of the telescopic shaft. The filter plate filters impurities in the waste solvent, and the telescopic shaft and spring work together to buffer the filter plate.

[0011] Preferably, the condensation device includes a connecting pipe and a condenser. The inlet end of the connecting pipe is connected to the outlet end of the exhaust pipe. The condenser is installed at the top of the base, and the outlet end of the connecting pipe is connected to the inlet end of the condenser. Steam flows into the interior of the condenser through the connecting pipe, where it is condensed. The condensed solution is then collected.

[0012] Preferably, the stirring device includes a motor and a motor shaft. The motor is mounted on the top of the barrel cover, and the output end of the motor is rotatably connected to the input end of the motor shaft. Multiple sets of stirring blades are provided on the motor shaft, and the stirring blades are all located below the filter plate. By starting the motor, the motor shaft and stirring blades are driven to rotate, stirring the waste solvent and making it evenly heated.

[0013] Preferably, the cleaning device includes a fixed platform, a power pump, a second pipe, and a third pipe. The fixed platform is installed on the side of the barrel, and the power pump is installed on the top of the fixed platform. The input end of the power pump is connected to the output end of the second pipe, and the output end of the power pump is connected to the input end of the third pipe. The third pipe extends through the barrel and into the interior of the barrel. Multiple sets of nozzles are connected to the output end of the third pipe. When the power pump is started, the cleaning liquid enters through the input end of the second pipe, flows through the third pipe, and is sprayed out through the output end of the nozzles to clean the residue on the filter plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: a distillation tank provides a treatment site for waste solvents; a heating device heats the waste solvent inside the distillation tank; a filtration device filters the waste solvent; a condensation device condenses and collects the distilled solvent inside the distillation tank; a stirring device stirs the waste solvent inside the distillation tank; and a cleaning device cleans the filtration device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 yes Figure 1 Structural isometric drawing of the operating table and distillation tank in this utility model;

[0017] Figure 3 yes Figure 1 Enlarged cross-sectional view of the distillation barrel and filtration device in this utility model;

[0018] Figure 4 yes Figure 1 Axonometric view of the structure of the distillation barrel and condensation device in this utility model.

[0019] The attached diagram is labeled as follows: 01, operating platform; 11, base; 12, slag discharge port; 02, distillation tank; 21, tank body; 22, slag discharge pipe; 23, first pipe; 24, valve one; 25, tank cover; 26, feed pipe; 27, valve two; 28, exhaust pipe; 03, heating device; 31, heater; 32, controller; 04, filtration device; 41, telescopic shaft; 42, spring; 43, filter plate; 05, condensing device; 51, connecting pipe; 52, condenser; 06, stirring device; 61, motor; 62, motor shaft; 63, stirring blade; 07, cleaning device; 71, fixed platform; 72, power pump; 73, second pipe; 74, third pipe; 75, nozzle. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] Example 1

[0022] A waste solvent recovery device for an automotive painting line includes an operating table 01; characterized in that it further includes a distillation tank 02, a heating device 03, a filtering device 04, a condensing device 05, a stirring device 06, and a cleaning device 07, wherein the distillation tank 02 and the condensing device 05 are both installed on the operating table 01, and the heating device 03, the filtering device 04, the stirring device 06, and the cleaning device 07 are all installed on the distillation tank 02.

[0023] Distillation tank 02 provides a processing area, heating device 03 heats, filtration device 04 filters, condensation device 05 collects distilled water, stirring device 06 stirs, and cleaning device 07 cleans.

[0024] The operating table 01 includes a base 11, which is installed in the working area and has a slag discharge port 12.

[0025] The distillation tank 02 includes a tank body 21, a slag discharge pipe 22, a first pipe 23, a tank cover 25, a feed pipe 26, and an exhaust pipe 28. The tank body 21 is mounted on a base 11. The slag discharge pipe 22 is connected to and mounted on the side of the tank body 21. The first pipe 23 is connected to and mounted on the bottom of the tank body 21. A valve 24 is installed on the first pipe 23. The tank cover 25 is mounted on the top of the tank body 21. The feed pipe 26 and the exhaust pipe 28 are connected to and mounted on the top of the tank cover 25. A valve 27 is installed on the feed pipe 26.

[0026] The heating device 03 includes a heater 31, which is fitted onto the outer wall of the barrel 21, and a controller 32 is provided on the heater 31.

[0027] The filtration device 04 includes a telescopic shaft 41, a spring 42, and a filter plate 43. The telescopic shaft 41 is installed inside the barrel 21, the spring 42 is fitted on the telescopic shaft 41, and the filter plate 43 is installed at the top of the telescopic shaft 41.

[0028] The condensing device 05 includes a connecting pipe 51 and a condenser 52. The input end of the connecting pipe 51 is connected to the output end of the exhaust pipe 28. The condenser 52 is installed on the top of the base 11, and the output end of the connecting pipe 51 is connected to the input end of the condenser 52.

[0029] The stirring device 06 includes a motor 61 and a motor shaft 62. The motor 61 is installed on the top of the barrel cover 25. The output end of the motor 61 is rotatably connected to the input end of the motor shaft 62. Multiple sets of stirring blades 63 are provided on the motor shaft 62. All stirring blades 63 are located below the filter plate 43.

[0030] Distillation tank 02 provides a processing area, heating device 03 heats the water, filtration device 04 filters the water, condensation device 05 collects the distilled water, and stirring device 06 stirs the water.

[0031] Open the feed pipe 26 and let the waste solvent enter through the input end of the feed pipe 26 into the inside of the tank 21. Then, the waste solvent is filtered by the filter plate 43. The filter plate 43 is buffered by the cooperation of the telescopic shaft 41 and the spring 42. Since the filter plate 43 is inclined, the filtered impurities will be discharged through the slag discharge pipe 22. Then, the controller 32 controls the heater 31 to heat the waste solvent inside the tank 21. Then, the motor 61 is started, which drives the motor shaft 62 and the stirring blade 63 to rotate, stirring the waste solvent and making it evenly heated. Then, the steam will be discharged into the condenser 52 through the exhaust pipe 28 and the connecting pipe 51. The condenser 52 condenses the steam and collects the solution after steam condensation, thus completing the waste solvent recovery.

[0032] Example 2

[0033] like Figures 1 to 4 As shown, in addition to Embodiment 1, a cleaning device 07 is also included;

[0034] The cleaning device 07 includes a fixed platform 71, a power pump 72, a second pipe 73, and a third pipe 74. The fixed platform 71 is installed on the side of the barrel 21, and the power pump 72 is installed on the top of the fixed platform 71. The input end of the power pump 72 is connected to the output end of the second pipe 73, and the output end of the power pump 72 is connected to the input end of the third pipe 74. The third pipe 74 passes through the barrel 21 and extends into the interior of the barrel 21. Multiple sets of nozzles 75 are connected to the output end of the third pipe 74.

[0035] Cleaning device 07 performs cleaning;

[0036] When the residue on the filter plate 43 affects the filtration efficiency of the filter plate 43, the cleaning liquid is introduced through the input end of the second pipe 73 by starting the power pump 72, flows through the third pipe 74, and is sprayed out through the output end of the nozzle 75 to clean the residue on the filter plate 43. Then, the valve 24 is opened to discharge the remaining solvent and cleaning liquid through the output end of the first pipe 23.

[0037] This utility model discloses a waste solvent recovery device for an automotive painting line. During operation, the feed pipe 26 is first opened, allowing waste solvent to enter through its input end and be fed into the tank 21. Impurities in the waste solvent are then filtered through a filter plate 43. A telescopic shaft 41 and a spring 42 work together to cushion the filter plate 43. Because the filter plate 43 is inclined, the filtered impurities are discharged through the slag discharge pipe 22. The controller 32 then controls the heater 31, which heats the waste solvent inside the tank 21. Finally, the motor 61 is started, driving the motor shaft 62 and the stirring blades 63 to... The pump rotates to stir the waste solvent, ensuring it is heated evenly. The steam then passes through the exhaust pipe 28 and the connecting pipe 51, and is discharged into the condenser 52. The condenser 52 condenses the steam and collects the condensed solution, thus recovering the waste solvent. When the residue on the filter plate 43 affects its filtration efficiency, the power pump 72 is activated to inject cleaning fluid through the inlet of the second pipe 73, through the third pipe 74, and out through the outlet of the nozzle 75 to clean the residue on the filter plate 43. The valve 24 is then opened to discharge the remaining solvent and cleaning fluid through the outlet of the first pipe 23.

[0038] The heater 31, filter plate 43, condenser 52, motor 61 and power pump 72 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0039] The main function of this invention is to clean the filter plate and improve the filtration efficiency.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A waste solvent recovery device for an automotive painting line, comprising an operating table (01); characterized in that, It also includes a distillation tank (02), a heating device (03), a filtering device (04), a condensing device (05), a stirring device (06), and a cleaning device (07). The distillation tank (02) and the condensing device (05) are both installed on the operating table (01), and the heating device (03), the filtering device (04), the stirring device (06), and the cleaning device (07) are all installed on the distillation tank (02). The distillation tank (02) provides the processing area, the heating device (03) heats the water, the filtration device (04) filters the water, the condensation device (05) collects the distilled water, the stirring device (06) stirs the water, and the cleaning device (07) cleans the water.

2. The waste solvent recovery device for an automotive painting line as described in claim 1, characterized in that, The operating table (01) includes a base (11), which is installed in the working area and has a slag discharge port (12).

3. The waste solvent recovery device for an automotive painting line as described in claim 2, characterized in that, The distillation tank (02) includes a tank body (21), a slag discharge pipe (22), a first pipe (23), a tank cover (25), a feed pipe (26), and an exhaust pipe (28). The tank body (21) is mounted on a base (11). The slag discharge pipe (22) is connected to the side end of the tank body (21). The first pipe (23) is connected to the bottom end of the tank body (21). A valve (24) is installed on the first pipe (23). The tank cover (25) is mounted on the top of the tank body (21). The feed pipe (26) and the exhaust pipe (28) are connected to the top of the tank cover (25). A valve (27) is installed on the feed pipe (26).

4. The waste solvent recovery device for an automotive painting line as described in claim 3, characterized in that, The heating device (03) includes a heater (31), which is fitted onto the outer wall of the barrel (21), and a controller (32) is provided on the heater (31).

5. The waste solvent recovery device for an automotive painting line as described in claim 3, characterized in that, The filter device (04) includes a telescopic shaft (41), a spring (42) and a filter plate (43). The telescopic shaft (41) is installed inside the barrel (21), the spring (42) is fitted on the telescopic shaft (41), and the filter plate (43) is installed on the top of the telescopic shaft (41).

6. The waste solvent recovery device for an automotive painting line as described in claim 3, characterized in that, The condensing device (05) includes a connecting pipe (51) and a condenser (52). The input end of the connecting pipe (51) is connected to the output end of the exhaust pipe (28). The condenser (52) is installed on the top of the base (11). The output end of the connecting pipe (51) is connected to the input end of the condenser (52).

7. The waste solvent recovery device for an automotive painting line as described in claim 5, characterized in that, The stirring device (06) includes a motor (61) and a motor shaft (62). The motor (61) is installed on the top of the barrel cover (25). The output end of the motor (61) is rotatably connected to the input end of the motor shaft (62). Multiple sets of stirring blades (63) are provided on the motor shaft (62). All stirring blades (63) are located below the filter plate (43).

8. The waste solvent recovery device for an automotive painting line as described in claim 3, characterized in that, The cleaning device (07) includes a fixed platform (71), a power pump (72), a second pipe (73), and a third pipe (74). The fixed platform (71) is installed on the side of the barrel (21), and the power pump (72) is installed on the top of the fixed platform (71). The input end of the power pump (72) is connected to the output end of the second pipe (73), and the output end of the power pump (72) is connected to the input end of the third pipe (74). The third pipe (74) passes through the barrel (21) and extends into the interior of the barrel (21). Multiple sets of nozzles (75) are connected to the output end of the third pipe (74).