CN216662540U

CN216662540U - A concentrated retrieval and utilization device of medicament for water based paint washs waste liquid treatment

Info

Publication number: CN216662540U
Application number: CN202123193299.1U
Authority: CN
Inventors: 刘建; 杨明; 李国军; 孙占东
Original assignee: Changchun Faw Comprehensive Utilization Co ltd
Current assignee: Changchun Faw Comprehensive Utilization Co ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-06-03
Anticipated expiration: 2031-12-17

Abstract

The utility model relates to a medicament concentration and recycling device for treating water-based paint cleaning waste liquid, which comprises a concentrator, wherein the top of the concentrator is provided with a sight glass, a manhole No. 1, a pressure gauge, a differential pressure transmitter No. 1 and a sight glass lighting device, the side wall of the concentrator is provided with an explosion-proof membrane, the top of the concentrator is also provided with a steam pipeline, a nitrogen pipeline and a vacuum pipeline connected with a vacuum pump, a demister is arranged at the inlet of the steam pipeline, the center of the interior of the concentrator is provided with three stirring paddles, two sides of the concentrator are provided with a plurality of metal short plates, and one side of the exterior of the concentrator is provided with a visual liquid level meter No. 1. The device comprises a plurality of closed circulating pipelines and closed systems, and can realize medicament concentration and industrial wastewater recovery through the process operations of feeding, concentration, condensation cooling, collection, concentration and the like. The device has the advantages of higher practicability and safety in the treatment process of the water-based paint cleaning waste liquid, convenient equipment maintenance and repair, low modification cost, simple and convenient process, capability of recycling waste water and capability of reducing the treatment cost of the water-based paint cleaning waste liquid.

Description

A concentrated retrieval and utilization device of medicament for water based paint washing waste liquid treatment

Technical Field

The utility model belongs to the technical field of automobile coating, and particularly relates to a device for concentrating and recycling a medicament in a water-based paint cleaning waste liquid treatment process.

Background

The traditional solvent-based spray paint takes benzene, ketone, ester and other organic solvents as dispersion media, a large amount of pollutants are generated during the use, and the high organic release amount has great harm to human bodies. The water-based paint spraying coating takes water as a dispersion medium and is widely used in the field of automobile manufacturing in China in recent years. In the automobile spraying process, in order to ensure that the color purity of the paint surface and the like meet the quality requirements, the cleaning process can be related to, and the cleaning agent is continuously used for washing the devices such as pipelines, valves, nozzles and the like in the spraying robot, so that a large amount of water-based paint cleaning waste liquid is generated. How to treat the water-based paint cleaning waste liquid to ensure that the water-based paint cleaning waste liquid meets the discharge standard and the environmental pollution is reduced is a difficult problem to be solved urgently at present.

The aqueous coating cleaning waste liquid has a complicated internal component, and about 70% of the component is water except for some water-insoluble impurities and the aqueous coating cleaning solvent. In the process of treating and comprehensively utilizing the aqueous coating cleaning waste liquid, after solid impurities are removed, in order to further separate an organic phase from a water phase efficiently, a large amount of salting-out agent is added, and then other purification and sewage treatment are combined, so that the organic solvent and industrial wastewater in the aqueous coating cleaning waste liquid are recovered, treated and comprehensively utilized to the maximum extent.

At present, the salting-out agent added when the organic phase and the aqueous phase of the aqueous coating cleaning waste liquid are separated by salting-out reaction is finally dissolved in the aqueous phase solution, and the molecular structure and the property of the salting-out agent are not changed. If the waste water is directly discharged into a comprehensive sewage biochemical treatment system, waste is inevitably caused. In order to recover and reuse the chemical, it is necessary to concentrate the salting-out agent in the aqueous coating cleaning waste liquid aqueous solution (hereinafter referred to as aqueous solution) and perform a secondary treatment to further reduce the COD of the recovered industrial wastewater and to concentrate the salting-out agent for recycling.

However, the existing multi-effect evaporation concentration device has complex structure, high production and modification cost and low utilization rate in the water-based paint cleaning waste liquid. Meanwhile, in the wastewater recovery process, the height of the baffle between two areas in the delayer in the existing equipment is too low, and in the decompression concentration process, large bubbles are formed in the collecting area, so that liquid flows into the discharging area, the static environment is damaged, and the layering effect is influenced.

Disclosure of Invention

The utility model provides a device for concentrating and recycling a medicament in a treatment process of an aqueous coating cleaning waste liquid, which solves the problems of complex structure, high production and modification cost and low utilization rate in the aqueous coating cleaning waste liquid of the existing multi-effect evaporation concentration device, and can recycle the waste water and reduce the COD (chemical oxygen demand) of the recycled waste water.

The purpose of the utility model is realized by the following technical scheme:

a medicament concentration recycling device for treating water-based paint cleaning waste liquid comprises a concentrator; the top of the concentrator is provided with a sight glass, a three-section thermometer, a manhole 1, a pressure gauge, a differential pressure transmitter 1 and a sight glass lighting device, a steam pipeline, a nitrogen pipeline and a vacuum pipeline connected with a vacuum pump are further arranged at the position to the right of the center of the top, and an explosion-proof membrane is arranged on the side wall of the concentrator; a demister is arranged at an inlet of the steam pipeline; three stirring paddles are arranged at the center of the interior of the concentrator, and a plurality of metal short plates are arranged on two sides of the concentrator; a No. 1 visual liquid level meter is arranged on one side of the outside of the concentrator;

the concentrator is connected with the aqueous phase solution intermediate tank through a No. 2 feed valve, a feed pump and a No. 1 feed valve; the bottom of the concentrator is provided with a discharge port, and the discharge port is connected with the concentrator through a No. 1 discharge valve, a No. 1 circulating valve, a circulating pump, a No. 2 circulating valve and a viscometer; the concentrator is also connected with a water phase solution feeding pipeline through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a residual solution valve, a residual solution tank and a No. 3 discharge valve; the concentrator is also connected with a water phase solution feeding pipeline through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a No. 2 discharge valve, a COD monitor, a No. 1 waste liquid valve, a waste liquid tank and a No. 4 discharge valve; the concentrator is also connected with a wastewater tank through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a No. 2 discharge valve, a COD monitor and a wastewater valve; the concentrator is also connected with a water phase solution feeding pipeline through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a No. 2 waste liquid valve, a No. 1 waste liquid valve, a waste liquid tank and a No. 4 discharge valve; the concentrator is also connected with a wastewater tank through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a No. 2 wastewater valve, a stop valve and a wastewater valve.

Further, the tank body of the concentrator is of a double-layer structure, the upper part of the tank body is cylindrical, and the bottom of the tank body is inverted cone.

Further, manometer and No. 1 differential pressure transmitter install in the top center department of concentrator, and sight glass, syllogic thermometer, No. 1 manhole set up in the top center of concentrator to the left side position, and sight glass lighting device sets up in the top center of concentrator to the right side position, and the rupture membrane sets up and is close to the top position on the lateral wall of concentrator.

Further, the three paddles differ in height.

Furthermore, a No. 2 visual liquid level meter is arranged on the side surface of the delayer, a metal baffle is further arranged in the delayer from bottom to top at a position close to one side, the lower part of the delayer is provided with a differential pressure transmitter, and a discharge pipeline of the delayer is provided with a sampling valve and a sampling port.

Furthermore, the metal baffle divides the delayer into a collecting area and a discharging area, wherein the collecting area is provided with a feeding hole, a feeding pipeline of the feeding hole is tightly attached to the inner wall of the tank body, a flow distribution plate is arranged below the feeding pipeline, a packing ball is further arranged in the collecting area, and a buffer plate is arranged in the discharging area.

Furthermore, the No. 1 feed valve, the No. 2 feed valve, the No. 1 circulating valve, the No. 2 circulating valve, the residue valve, the residual liquid valve, the two waste liquid valves, the waste water valve and the stop valve are all set to be electromagnetic pneumatic valves, are connected with the DCS automatic control system and are connected with corresponding manual valves in parallel.

Further, charge pump, circulating pump, residue pump, syllogic thermometer, manometer, No. 1 differential pressure transmitter, viscometer, flowmeter, thermometer, No. 2 differential pressure transmitter, COD monitor all link to each other with DCS automatic control system.

Furthermore, the No. 1 bleeder valve, No. 2 bleeder valve, No. 3 bleeder valve, No. 4 bleeder valve, sample valve are manual control valves.

Compared with the prior art, the utility model has the beneficial effects that:

the medicament concentration and recycling device for treating the water-based paint cleaning waste liquid has the advantages of higher practicability and safety in the water-based paint cleaning waste liquid treatment process, convenience in equipment maintenance and repair, low modification cost, simple and convenient process, capability of recovering waste water, reduction in COD (chemical oxygen demand) of the recovered waste water and capability of reducing the treatment cost of the water-based paint cleaning waste liquid.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a device for concentrating and recycling chemicals used for treating waste water from cleaning water-based paint.

Detailed Description

The utility model is further illustrated by the following examples:

the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in figure 1, the device for concentrating and recycling the medicament for treating the water-based coating cleaning waste liquid comprises a feed pump, two feed valves, a concentrator, a stirring paddle, a circulating pump, two circulating valves, a viscometer, two visual liquid level meters, a three-section thermometer, a pressure gauge, a vacuum pipeline, a nitrogen pipeline, an explosion-proof membrane, a demister, two manholes, sight glass illumination, a sight glass, two differential pressure transducers, four discharge valves, a residue pump, a residue valve, a salting-out phase separator, a condenser, a cooler, a flowmeter, a thermometer, a delayer, a residue valve, a residue tank, two residue valves, a waste liquid tank, a waste water valve, a waste water tank, a stop valve, a COD monitor, a sampling valve and a sampling port.

The tank body of the concentrator is of a double-layer structure, the upper part of the tank body is cylindrical, and the bottom of the tank body is an inverted cone.

The concentrator top is equipped with sight glass, No. 1 manhole, manometer, No. 1 differential pressure transducer and sight glass lighting device, is equipped with the rupture membrane near the top position on the lateral wall. Wherein, manometer and No. 1 differential pressure transmitter install in the top center department of concentrator, and sight glass, syllogic thermometer, No. 1 manhole set up in the top center of concentrator to the left side position, and sight glass lighting device sets up in the top center of concentrator to the right side position, and the rupture membrane sets up and is close to the top position on the lateral wall of concentrator. The concentrator is also provided with a steam pipeline, a nitrogen pipeline and a vacuum pipeline connected with a vacuum pump. And a demister is arranged at the inlet of the steam pipeline.

The inside center department of concentrator is equipped with the stirring rake of three difference in height, and polylith metal short slab is installed to both sides.

The external side of the concentrator was fitted with a number 1 visual level gauge.

The concentrator is connected with an aqueous solution intermediate tank (not shown in the figure) through a No. 1 feeding valve, a feeding pump and a No. 2 feeding valve. The concentrator bottom is equipped with the discharge gate, and the discharge gate links to each other with the concentrator through discharge valve No. 1, circulating pump, circulating valve No. 2, viscometer and constitutes circulating line. The concentrator is also connected with a water phase solution feeding pipeline through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a residual liquid valve, a residual liquid tank and a No. 3 discharge valve to form a closed circulating pipeline. The concentrator is connected with an aqueous phase solution feeding pipeline through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a No. 2 discharge valve, a COD monitor, a No. 1 waste liquid valve, a waste liquid tank and a No. 4 discharge valve to form a closed circulating pipeline. The concentrator is connected with a wastewater tank through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a No. 2 discharge valve, a COD monitor and a wastewater valve to form a closed system. The concentrator is also connected with a water phase solution feeding pipeline through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a No. 2 waste liquid valve, a No. 1 waste liquid valve, a waste liquid tank and a No. 4 discharge valve to form a closed circulating pipeline. The concentrator is connected with a wastewater tank through a condenser, a cooler, a flowmeter, a thermometer, a delayer, a No. 2 wastewater valve, a stop valve and a wastewater valve to form a closed system.

Wherein, the side surface of the delaminator is provided with a No. 2 visual liquid level meter. The inner part of the delayer, which is close to one side of the delayer, is also provided with a metal baffle from bottom to top, the delayer is divided into a collecting area and a discharging area, the collecting area is provided with a feed inlet, a feed pipeline of the feed inlet is tightly attached to the inner wall of the tank body, a flow distribution plate is arranged below the feed inlet, and a packing ball is also arranged in the collecting area. The delayer discharge zone is equipped with a buffer plate. And a differential pressure transmitter is arranged at the lower part of the delaminator. And a sampling valve and a sampling port are arranged on a discharge pipeline of the layering device.

Wherein, No. 1 feed valve, No. 2 feed valve, No. 1 circulating valve, No. 2 circulating valve, residue valve, raffinate valve, waste liquid valve, waste water valve and stop valve all set up to electromagnetic pneumatic valve, and link to each other with DCS automatic control system, and the while is parallelly connected there is corresponding manual valve. In addition, charge pump, circulating pump, residue pump, syllogic thermometer, manometer, No. 1 differential pressure transmitter, viscometer, flowmeter, thermometer, No. 2 differential pressure transmitter, COD monitor all link to each other with DCS automatic control system. No. 1 bleeder valve, No. 2 bleeder valve, No. 3 bleeder valve, No. 4 bleeder valve, sample valve are manual control valves.

The working process comprises the following steps:

1. feeding of the feedstock

And opening a No. 1 feeding valve, a feeding pump and a No. 2 feeding valve through a DCS automatic control system, and enabling the aqueous phase solution to enter the concentrator from the aqueous phase solution intermediate tank. During the period, heat conducting oil can be introduced into the interlayer of the concentrator to preheat the concentrator. Simultaneously, open the stirring rake and stir the interior feed liquid of concentrator, make feed liquid thermally equivalent, a plurality of metal short slabs are installed to the concentrator inner wall, prevent to form the feed liquid swirl at the stirring in-process, influence mixed effect. The height of the feed liquid in the tank can be observed by a field operator through a visual liquid level meter. No. 1 differential pressure transducer at the top of the concentrator carries out real-time monitoring on the liquid level of the feed liquid, the monitored liquid level value is transmitted to a DCS automatic control system, when the value reaches the set feeding liquid level, a feeding pump stops running under the control of the DCS system, a No. 1 feeding valve and a No. 2 feeding valve are closed, the feeding is stopped, and the collection of the feed liquid is completed.

2. Concentrating

After the feeding is completed, the circulating valve No. 1, the circulating pump and the circulating valve No. 2 are opened through the DCS automatic control system, liquid in the tank begins to flow back and mix, the tank body is continuously heated through heat conduction oil at the moment, the temperature conditions of different heights in the tank are monitored through the three-section type thermometer, the temperature data are transmitted to the DCS automatic control system, the temperature in the concentrator can be tracked through the thermometer by field operators, and the uniformity degree of the temperature in the tank is judged. Under the effect of the lighting device, the appearance change condition of the feed liquid in the tank can be observed through the sight glass at the top of the tank body. After the liquid reaches the boiling point in the jar, the steam of production gets into steam conduit through the demister, and the demister can prevent that medicament concentration process steam from smuggleing liquid foam impurity secretly and getting into steam conduit, and then influences concentration efficiency. In the process of concentration, when the liquid level data remotely transmitted to the DCS by the No. 1 differential pressure transmitter reaches a set value, the vacuum pump is started by the DCS automatic control system, so that the vacuum environment is maximally achieved in the tank, and then the vacuum concentration is further performed.

3. Condensing and cooling

Cooling water is introduced into a condenser and a cooler in advance in the concentration process, steam enters the condenser through a steam pipeline firstly and is condensed into liquid, then the liquid enters the cooler to further reduce the temperature of the condensate, a flowmeter and a thermometer are arranged at the outlet of the cooler, the temperature of the cooled liquid can be monitored, and the discharge speed of the condensate is monitored at the same time, so that the concentration speed can be mastered.

4. Collecting

In the salting-out treatment process of the water-based paint cleaning waste liquid, a small part of organic solvent molecules cannot be completely separated from water, so that the organic solvent molecules are subjected to azeotropic distillation with water at the early stage of concentration and mixed into condensate collected in a delayer at the early stage, and the COD of the whole solution in the delayer is higher. And through the action of gravity, the mixed liquid can be kept still for layering, the organic solvent is on the upper part, and the industrial wastewater is on the lower part, and then the industrial wastewater is collected, so that the COD of the industrial wastewater can be further reduced. Therefore, during the process of collecting the condensate, the condensate needs to be collected into a layering device and stands for layering. Liquid after the steam condensation cooling passes through the flow distribution plate through charge-in pipeline and gets into the layering ware collecting region, and the packed ball in the collecting region has the cushioning effect, prevents that liquid from flowing into the static environment that the layering ware occasionally the splash destroys the discharge area.

When the total liquid level of the delaminator exceeds the height of the baffle, liquid can automatically flow into the discharge area of the delaminator from the collection area, one side of the discharge area of the delaminator is provided with a discharge port and is connected with a discharge pipeline, the height of the discharge port is slightly lower than the height of the baffle, and the solution in the discharge area is always kept static, so that the liquid can be conveniently stood for layering. When the feed liquid got into the exhaust zone, discharge into the tank bottoms through the flow distribution plate, play the cushioning effect, after the exhaust zone liquid level riseed discharge pipe liquid level gradually, the high liquid level of liquid did also play the efficient cushioning effect, avoided liquid to destroy the holistic static environment in exhaust zone after the exhaust zone was discharged from the collecting region. Discharge area is equipped with 2 differential pressure transmitter, when the liquid level numerical value that reaches the DCS system reaches the ejection of compact pipeline liquid level, is opened by on-the-spot operating personnel with number 2 discharge valve, and the waste water COD that the COD monitor will be monitored is in the long-range transmission DCS system, if the COD value is higher than the setting value, is not conform to the waste water and collects the requirement, then opens the waste liquid valve through the DCS system, discharges upper liquid into the waste liquid tank. When the COD value is within the set range and meets the requirement of wastewater collection, the No. 1 waste liquid valve is closed through the DCS system, the waste liquid valve is opened, and the solution in the tank is discharged into the waste water tank. In addition, be equipped with the sample connection on ejection of compact pipeline, can manually open the sample valve, the manual work is carried out the sample chemical examination to discharge area liquid, judges whether accord with the collection requirement. And a visual liquid level meter is arranged outside the tank body on one side of the collecting region of the delaminator and can be used for on-site operators to monitor the liquid level of the liquid in the delaminator in real time.

The concentration, the condensation cooling and the wastewater recovery are all carried out synchronously.

5. The concentration is finished

The viscometer is arranged on the circulating pipeline, so that the viscosity of the feed liquid in the tank in the medicament concentration process can be monitored in real time, when the viscosity reaches the set concentration end point feed liquid viscosity range, the heating can be stopped through the DCS system, and the medicament concentration is finished.

After the concentration, No. 2 differential pressure transmitting instrument is less than the data of ejection of compact pipeline and far reaches the DCS system at delayer discharge area liquid level, is closed No. 2 bleeder valves by field operation personnel this moment, opens No. 2 waste liquid valve, stop valve through the DCS system, collects the waste water jar with jar interior surplus liquid, finally gets into the waste water treatment system and carries out further processing. In addition, a residual liquid valve is opened through a DCS system, and residual liquid in a collecting area in the delaminator can be discharged into a residual liquid tank through a residual liquid pipeline at the bottom. At this time, the remaining salting-out agent in the thickener had a high concentration and a high viscosity, and was not easily discharged. Therefore, can be with liquid in waste liquid jar and the residual liquid jar, discharge into the concentrator with waste liquid and raffinate through opening discharge valve No. 3 and discharge valve No. 4, feed valve No. 1, charge pump, feed valve No. 2 respectively, dilute the concentrate to discharge the salting-out agent at last and carry out the medicament retrieval and utilization in the salting-out phase splitter, also can carry out cyclic processing to the higher waste water of COD in the waste water jar simultaneously, carry out maximum recovery to industrial waste water wherein. And finally, manually opening a discharge valve, opening a residue pump and a residue valve through a DCS (distributed control system), discharging the concentrated solution in the tank into a salting-out phase separator, recycling the salting-out agent, and continuously performing salting-out treatment on the water-based paint cleaning waste liquid.

After the concentration is finished, nitrogen is filled into the concentrator through a nitrogen pipeline, so that the concentrator is recovered to normal pressure. Can carry out real-time supervision to the concentrator internal pressure through the manometer to reach the DCS system with data far away, when reaching the ordinary pressure state, can close nitrogen gas pipeline switch through the DCS system, end gas replacement. The nitrogen belongs to inert gas, and the explosion hazard value of the concentrator can be effectively reduced.

6. Equipment maintenance

Maintenance operators can maintain the interior of the tank body through the concentrators and the manholes at the tops of the delayers. The concentrator is probably exploded under the too big condition of pressure, can directly avoid this condition to take place through the installation rupture membrane, and the rupture membrane directly wears the wall and accesss to outdoor exhaust treatment system, and too big when concentrator internal pressure, the inside rupture membrane of pipeline can take place to break, directly destroys airtight condition, plays the explosion-proof. During the maintenance, the collecting region and the exhaust region of delayer are evacuated to the accessible is opened incomplete liquid valve, No. 2 waste liquid valves, No. 1 waste liquid valve to carry out follow-up maintenance and maintenance to the delayer inside.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. The utility model provides a concentrated retrieval and utilization device of medicament for water based paint washs waste liquid treatment which characterized in that: comprises a concentrator; the top of the concentrator is provided with a sight glass, a three-section thermometer, a manhole 1, a pressure gauge, a differential pressure transmitter 1 and a sight glass lighting device, a steam pipeline, a nitrogen pipeline and a vacuum pipeline connected with a vacuum pump are further arranged at the position to the right of the center of the top, and an explosion-proof membrane is arranged on the side wall of the concentrator; a demister is arranged at an inlet of the steam pipeline; three stirring paddles are arranged at the center of the interior of the concentrator, and a plurality of metal short plates are arranged on two sides of the concentrator; a No. 1 visual liquid level meter is arranged on one side of the outside of the concentrator;

2. The device for concentrating and recycling the medicament for treating the water-based paint cleaning waste liquid according to claim 1, characterized in that: the tank body of the concentrator is of a double-layer structure, the upper part of the tank body is cylindrical, and the bottom of the tank body is an inverted cone.

3. The device for concentrating and recycling the medicament for treating the water-based paint cleaning waste liquid according to claim 1, characterized in that: manometer and No. 1 differential pressure transmitter install in the top center department of concentrator, and sight glass, syllogic thermometer, No. 1 manhole set up in the top center of concentrator to the left side position, and sight glass lighting device sets up in the top center of concentrator to the right side position, and the rupture membrane sets up and is close to the top position on the lateral wall of concentrator.

4. The device for concentrating and recycling the medicament for treating the water-based paint cleaning waste liquid according to claim 1, characterized in that: the three stirring paddles have different heights.

5. The device for concentrating and recycling the medicament for treating the water-based paint cleaning waste liquid according to claim 1, characterized in that: a No. 2 visual liquid level meter is arranged on the side surface of the delayer, a metal baffle is further arranged in the delayer from bottom to top at a position close to one side, a differential pressure transmitter is arranged at the lower part of the delayer, and a sampling valve and a sampling port are arranged on a discharge pipeline of the delayer.

6. The device for concentrating and recycling the medicament for treating the water-based paint cleaning waste liquid according to claim 5, characterized in that: the metal baffle divides the delayer into a collecting area and a discharging area, wherein the collecting area is provided with a feeding hole, a feeding pipeline of the feeding hole is tightly attached to the inner wall of the tank body, a flow distribution plate is arranged below the feeding pipeline, a packing ball is further arranged in the collecting area, and a buffer plate is arranged in the discharging area.

7. The device for concentrating and recycling the medicament for treating the water-based paint cleaning waste liquid according to claim 1, characterized in that: no. 1 feed valve, No. 2 feed valve, No. 1 circulating valve, No. 2 circulating valve, residue valve, raffinate valve, waste liquid valve, waste water valve and stop valve all set up to electromagnetic pneumatic valve, and link to each other with DCS automatic control system, and the while is parallelly connected there is corresponding manual valve.

8. The device for concentrating and recycling the medicament for treating the water-based paint cleaning waste liquid according to claim 1, characterized in that: the feeding pump, the circulating pump, the residue pump, the three-section type thermometer, the pressure gauge, the No. 1 pressure difference transmitter, the viscometer, the flowmeter, the thermometer, the No. 2 pressure difference transmitter and the COD monitor are all connected with the DCS automatic control system.

9. The device for concentrating and recycling the medicament for treating the water-based paint cleaning waste liquid according to claim 1, characterized in that: no. 1 bleeder valve, No. 2 bleeder valve, No. 3 bleeder valve, No. 4 bleeder valve, sample valve are manual control valves.