CN210030931U - Recovery unit of car body electrophoresis application back pure water washing solid - Google Patents
Recovery unit of car body electrophoresis application back pure water washing solid Download PDFInfo
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- CN210030931U CN210030931U CN201920331161.7U CN201920331161U CN210030931U CN 210030931 U CN210030931 U CN 210030931U CN 201920331161 U CN201920331161 U CN 201920331161U CN 210030931 U CN210030931 U CN 210030931U
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Abstract
The utility model discloses a recovery device for pure water washing solid after car body electrophoretic coating, which comprises an electrophoretic paint tank (1), an auxiliary electrophoretic tank (2), a first ultrafiltration tank (3), a second ultrafiltration tank (4), a pure water washing tank (5), an ultrafiltration device (6) and an electrophoretic outlet tank spray (14); the device also comprises a special ultrafiltration device (7), a water tank (8), a transfer pump (9) and a circulating pump (13); the bottom of the pure water washing tank is connected with a water tank liquid inlet through a pipeline, a water tank liquid outlet is connected with a special ultrafiltration device liquid inlet through a transfer pump through a pipeline, and a special ultrafiltration device liquid outlet is connected with a recovery liquid port of the pure water washing tank and a water tank recovery liquid port through a pipeline; the bottom of the water tank is connected with the liquid inlet of the electrophoresis auxiliary tank and the liquid inlet of the second ultrafiltration tank through a circulating pump and a pipeline. The utility model discloses can solve prior art and can not retrieve the solid in the pure water washtrough and the loss part solid that causes and environmental pollution's problem, reduce the interpolation of electrophoresis lacquer material and the replenishment of pure water washtrough pure water.
Description
Technical Field
The utility model relates to an automobile body electrophoresis application equipment especially relates to a recovery unit that solid was washed to automobile body electrophoresis application back pure water.
Background
The electrophoretic coating is a novel coating with low pollution, energy conservation, resource conservation, protection and corrosion prevention, has the characteristics of smooth coating, good water resistance and chemical resistance and the like, is easy to realize mechanization and automation of the coating industry, is suitable for coating workpieces with complicated shapes and edge corners or holes, and is widely applied to coating hardware such as automobiles, electromechanics, household appliances and the like. After an object to be coated is subjected to electrophoretic coating, a layer of coating film is deposited on the surface of the object to be coated, a certain amount of electrophoretic coating can be adsorbed on the outer layer of the coating film due to the physical adsorption effect, the electrophoretic coating does not undergo chemical reaction and must be washed away by deionized water, otherwise the appearance quality and the coating performance of the object to be coated can be influenced, but in the cleaning process, a large amount of sewage is generated to be discharged, the environment is polluted, and meanwhile, a large amount of raw materials are wasted.
In order to eliminate secondary flow marks generated in cleaning, improve the quality of a coating film and the recovery rate of electrophoretic paint, the water washing process after electrophoresis is greatly improved, the cleaning mode is changed from spray cleaning in the 80 s to dip-spray combined cleaning, in order to improve the utilization rate of cathode coating and reduce the discharge sewage, a single Ultrafiltration (UF) device is generally adopted, electrophoretic paint liquid passes through the Ultrafiltration (UF) device, low-molecular substances such as separated water, solvent and the like are used as cleaning water, and concentrated paint liquid returns to an electrophoresis tank. The electrophoretic paint is prepared from solid, ash content and pigment ratio, MEQ, organic solvent and the like, and after ultrafiltration, part of the solid, polar liquid, UF liquid, cleaning equipment and pipeline water form electrophoretic coating sewage to be treated, and waste of part of raw materials and pollution to the environment are caused.
Referring to fig. 1, the electrophoresis washing recovery system of the prior art includes an electrophoresis paint tank (EDTANK) 1, an electrophoresis auxiliary tank 2, a first ultrafiltration tank (UF 1) 3, a second ultrafiltration tank (UF 2) 4, a pure water washing tank (DI) 5, an ultrafiltration device (UF) 6, and an electrophoresis outlet tank spray 14; the electrophoresis paint tank 1, the electrophoresis auxiliary tank 2, the first ultrafiltration tank 3, the second ultrafiltration tank 4 and the pure water washing tank 5 are sequentially connected through pipelines and used for conveying electrophoresis liquid, and a drain pipe is arranged at the upper part of the pure water washing tank 5 and used for draining water; filtering fresh ultrafiltrate from the electrophoretic liquid in the auxiliary electrophoretic tank 2 connected with the electrophoretic paint tank 1 by using an ultrafiltration device 6, supplying the filtered ultrafiltrate to an electrophoretic outlet tank spray 14 and a second ultrafiltration tank 4 in a cleaning procedure, and returning the electrophoretic liquid to the auxiliary electrophoretic tank 2 to form a closed post-electrophoresis cleaning process; when the overflow occurs, the second ultrafiltration tank 4 overflows to the first ultrafiltration tank 3, and the first ultrafiltration tank 3 overflows to the electrophoresis auxiliary tank 2. In the prior art, only part of solid in the ultrafiltration device 6 can be recovered, and the solid in the liquid in the pure water washing tank 5 after electrophoresis cannot be recovered, so that the waste liquid containing the solid in the pure water washing tank 5 can be only treated by overflowing and discharged to a sewage station, part of the solid is lost, the treatment burden of the sewage treatment station is increased, and the key is that the environment is polluted.
Disclosure of Invention
An object of the utility model is to provide a recovery unit of solid is washed to pure water behind automobile body electrophoresis application can solve among the prior art and can not retrieve the solid in the pure water washtrough and the loss part solid that causes and environmental pollution's problem.
The utility model discloses a realize like this:
a recovery unit of pure water washing solid after car body electrophoretic coating comprises an electrophoretic paint tank, an electrophoretic auxiliary tank, a first ultrafiltration tank, a second ultrafiltration tank, a pure water washing tank, an ultrafiltration device and an electrophoretic outlet tank for spraying; the electrophoresis paint tank, the electrophoresis auxiliary tank, the first ultrafiltration tank, the second ultrafiltration tank and the pure water washing tank are sequentially connected through a pipeline and used for conveying electrophoresis liquid, and a drain pipe is arranged on the pure water washing tank; the liquid outlet of the auxiliary electrophoresis tank is connected with the liquid inlet of the ultrafiltration device through a pipeline, and the liquid outlet of the ultrafiltration device is connected with the auxiliary electrophoresis tank, the electrophoresis outlet tank spray tank and the liquid inlet of the second ultrafiltration tank through pipelines to form a cleaning and recycling cycle;
the recovery device also comprises a special ultrafiltration device, a water tank, a transfer pump and a circulating pump; the bottom of the pure water washing tank is connected with a liquid inlet of the water tank through a pipeline, a liquid outlet of the water tank is connected to a liquid inlet of the special ultrafiltration device through a transfer pump through a pipeline, and a liquid outlet of the special ultrafiltration device is connected to a recovered liquid port of the pure water washing tank and a recovered liquid port of the water tank through pipelines; the bottom of the water tank is connected to a liquid inlet of the electrophoresis auxiliary tank and a liquid inlet of the second ultrafiltration tank through a circulating pump.
And valves are arranged on connecting pipelines between the circulating pump and the electrophoresis auxiliary tank and between the circulating pump and the second ultrafiltration tank.
And a valve is arranged on a connecting pipeline between the pure water washing tank and the water tank.
A turbidity meter is arranged in the water tank.
A liquid level meter is arranged in the water tank.
The special ultrafiltration device is internally provided with a bag filter.
The utility model discloses can solve prior art can not retrieve the solid in the pure water washtrough and the loss part solid that causes and environmental pollution's problem, reduce the interpolation of electrophoresis lacquer material and the replenishment of pure water washtrough pure water.
Drawings
FIG. 1 is a front view of a prior art electrophoretic wash recovery system;
FIG. 2 is a front view of the recovery device for pure water washing solid after the car body electrophoretic coating of the utility model;
FIG. 3 is a schematic diagram of the device for recovering solids from pure water after electrophoretic coating of a vehicle body according to the present invention.
In the figure, 1 electrophoresis paint tank (EDTANK), 2 electrophoresis auxiliary tanks, 3 first ultrafiltration tank (UF 1), 4 second ultrafiltration tank (UF 2), 5 pure water wash tank (DI), 6 ultrafiltration device (UF), 7 special ultrafiltration device (UF 3), 8 water tank, 9 transfer pump, 10 valve, 11 turbidimeter, 12 level gauge, 13 circulating pump, 14 electrophoresis outlet tank spray.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 2, a device for recovering pure water washing solid after electrophoretic coating of a vehicle body comprises an electrophoretic paint tank (EDTANK) 1, an auxiliary electrophoretic tank 2, a first ultrafiltration tank (UF 1) 3, a second ultrafiltration tank (UF 2) 4, a pure water washing tank (DI) 5, an ultrafiltration device (UF) 6, a special ultrafiltration device (UF 3) 7, a water tank 8, a transfer pump 9, a circulation pump 13 and an electrophoretic outlet tank spray 14; the electrophoresis paint tank 1, the electrophoresis auxiliary tank 2, the first ultrafiltration tank 3, the second ultrafiltration tank 4 and the pure water washing tank 5 are sequentially connected through pipelines and used for conveying electrophoresis liquid, and a drain pipe is arranged at the upper part of the pure water washing tank 5 and used for draining water; the liquid outlet of the electrophoresis auxiliary tank 2 is connected with the liquid inlet of the ultrafiltration device 6 through a pipeline, and the liquid outlet of the ultrafiltration device 6 is connected with the liquid inlets of the electrophoresis auxiliary tank 2, the electrophoresis outlet tank spray 14 and the second ultrafiltration tank 4 through pipelines to form a cleaning and recycling cycle. And filtering fresh ultrafiltrate from the electrophoretic liquid in the auxiliary electrophoretic tank 2 connected with the electrophoretic paint tank 1 by using an ultrafiltration device 6, supplying the filtered ultrafiltrate to an electrophoretic outlet tank spray 14 and a second ultrafiltration tank 4 in a cleaning procedure, and enabling the electrophoretic liquid to flow back into the auxiliary electrophoretic tank 2 to form a closed post-electrophoresis cleaning process.
The bottom of the pure water washing tank 5 is connected with a liquid inlet of a water tank 8 through a pipeline, a liquid outlet of the water tank 8 is connected with a liquid inlet of a special ultrafiltration device 7 through a transfer pump 9 through a pipeline, and a liquid outlet of the special ultrafiltration device 7 is connected with the pure water washing tank 5 and the water tank 8 through pipelines and used for recovering solid in the pure water washing tank 5; the bottom of the water tank 8 is connected to a liquid inlet of the auxiliary electrophoresis tank 2 and a liquid inlet of the second ultrafiltration tank 4 through a circulating pump 13.
The circulating pump 13 and the electrophoresis auxiliary tank 2 and the second ultrafiltration tank 4 are provided with valves 10 on the connecting pipeline, the pure water washing tank 5 and the water tank 8 are provided with valves 10 on the connecting pipeline, and each valve 10 can be independently controlled, so that the system can maintain and adjust a certain set of membrane group without shutdown. Preferably, the valve 10 is an electrically operated valve, which can effectively control the opening and closing of the valve 10.
And a turbidity meter 11 is arranged in the water tank 8 and used for checking the solid content of the water tank 8, and when the solid content in the water tank 8 reaches a set value, the liquid in the water tank 8 is conveyed to the electrophoresis auxiliary tank 2 and the second ultrafiltration tank 4. The water tank 8 is internally provided with a liquid level meter 12 for detecting the liquid level in the water tank 8, and when the liquid in the water tank 8 reaches a certain liquid level, the liquid in the water tank 8 is conveyed to the special ultrafiltration device 7. The input and output of the liquid in the water tank 8 are controlled by the detection data of the turbidity meter 11 and the liquid level meter 12, so as to achieve the purpose of recycling.
The special ultrafiltration device 7 is internally provided with a bag filter, so that the liquid in the water tank 8 can be subjected to pre-stage precise prefiltering, and the service lives of ultrafiltration membranes in the first ultrafiltration tank 3, the second ultrafiltration tank 4 and the ultrafiltration device 6 can be prolonged. Preferably, the bag filter may be a reverse osmosis membrane.
The utility model discloses an operation principle is:
referring to the attached figure 3, an ultrafiltration device 6 is adopted to filter out fresh ultrafiltrate from the electrophoretic liquid in the auxiliary electrophoresis tank 2, the fresh ultrafiltrate is supplied to an electrophoresis outlet tank spray 14 in the cleaning process and is used by a second ultrafiltration tank 4, then the pure water washing liquid in the pure water washing tank 5 is sent to a water tank 8 by the action of gravity under the control of a valve 10, a transfer pump 9 works after the liquid in the water tank 8 reaches a certain liquid level, and the pure water washing liquid in the water tank 8 enters a special ultrafiltration device 7 for concentration treatment after being subjected to pre-stage precise prefiltration. The concentrated solution after special ultrafiltration device 7 handles returns water tank 8 through the pipeline, and permeate liquid after special ultrafiltration device 7 handles is sent to pure water washtrough 5, arranges to electrophoresis paint groove 1 or second ultrafiltration tank 4 with circulating pump 13 after the concentrated solution reaches certain concentration in the water tank 8, and the control of valve 10 is opened and is sent the pure water lotion in the pure water washtrough 5 to water tank 8 after water tank 8 evacuation, cycle work.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (6)
1. A recovery device for pure water washing solid after car body electrophoretic coating comprises an electrophoretic paint tank (1), an electrophoretic auxiliary tank (2), a first ultrafiltration tank (3), a second ultrafiltration tank (4), a pure water washing tank (5), an ultrafiltration device (6) and an electrophoretic outlet tank spray (14); the electrophoresis paint tank (1), the electrophoresis auxiliary tank (2), the first ultrafiltration tank (3), the second ultrafiltration tank (4) and the pure water washing tank (5) are sequentially connected through pipelines and convey electrophoresis liquid, and a drain pipe is arranged on the pure water washing tank (5); the liquid outlet of the auxiliary electrophoresis tank (2) is connected with the liquid inlet of the ultrafiltration device (6) through a pipeline, and the liquid outlet of the ultrafiltration device (6) is connected with the auxiliary electrophoresis tank (2), the electrophoresis outlet tank spray (14) and the liquid inlet of the second ultrafiltration tank (4) through pipelines to form a cleaning and recycling cycle;
the method is characterized in that: the recovery device also comprises a special ultrafiltration device (7), a water tank (8), a transfer pump (9) and a circulating pump (13); the bottom of the pure water washing tank (5) is connected with a liquid inlet of a water tank (8) through a pipeline, a liquid outlet of the water tank (8) is connected with a liquid inlet of a special ultrafiltration device (7) through a transfer pump (9) through a pipeline, and a liquid outlet of the special ultrafiltration device (7) is connected with a recovered liquid port of the pure water washing tank (5) and a recovered liquid port of the water tank (8) through pipelines; the bottom of the water tank (8) is connected to a liquid inlet of the electrophoresis auxiliary tank (2) and a liquid inlet of the second ultrafiltration tank (4) through a circulating pump (13) by pipelines.
2. The apparatus for recovering pure water-washed solid content after electrodeposition coating of a vehicle body according to claim 1, wherein: and a valve (10) is arranged on a connecting pipeline between the circulating pump (13) and the electrophoresis auxiliary tank (2) and the second ultrafiltration tank (4).
3. The apparatus for recovering pure water-washed solid content after electrodeposition coating of a vehicle body according to claim 1, wherein: and a valve (10) is arranged on a connecting pipeline between the pure water washing tank (5) and the water tank (8).
4. The apparatus for recovering pure water-washed solids after electrodeposition coating of a vehicle body according to claim 1 or 3, wherein: a turbidity meter (11) is arranged in the water tank (8).
5. The apparatus for recovering pure water-washed solids after electrodeposition coating of a vehicle body according to claim 1 or 3, wherein: a liquid level meter (12) is arranged in the water tank (8).
6. The apparatus for recovering pure water-washed solid content after electrodeposition coating of a vehicle body according to claim 1, wherein: a bag filter is arranged in the special ultrafiltration device (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920331161.7U CN210030931U (en) | 2019-03-15 | 2019-03-15 | Recovery unit of car body electrophoresis application back pure water washing solid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920331161.7U CN210030931U (en) | 2019-03-15 | 2019-03-15 | Recovery unit of car body electrophoresis application back pure water washing solid |
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| CN210030931U true CN210030931U (en) | 2020-02-07 |
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| CN201920331161.7U Active CN210030931U (en) | 2019-03-15 | 2019-03-15 | Recovery unit of car body electrophoresis application back pure water washing solid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774464A (en) * | 2021-09-13 | 2021-12-10 | 东风汽车底盘系统有限公司 | Electrophoresis lacquer recovery unit |
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2019
- 2019-03-15 CN CN201920331161.7U patent/CN210030931U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113774464A (en) * | 2021-09-13 | 2021-12-10 | 东风汽车底盘系统有限公司 | Electrophoresis lacquer recovery unit |
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