Sewage treatment system for water-based paint production

Abstract

The utility model relates to a sewage treatment system for water-based paint production, and relates to the technical field of wastewater treatment.The sewage treatment system comprises a wastewater treatment box, an agent A storage tank and an agent B. The top of the sewage treatment box communicates with a wastewater pipeline, a first raw material pipeline and a second raw material pipeline, and the liquid inlet end of the first raw material pipeline communicates with the agent A storage tank; the liquid inlet end of the second raw material pipeline is communicated with the B agent storage tank; the device further comprises a wastewater quantity detection unit, a signal processing unit, a first quantitative adding unit, a second quantitative adding unit, a stirring motor, a turbidity detection unit, a discharging mechanism and the like. The device can automatically and quantitatively add an agent A and an agent B according to the amount of wastewater in the wastewater treatment tank, and automatically remove condensates in a water body, so that the time and effort for treating the water-based paint production wastewater by an operator are saved.

Description

Technical Field

[0001] The present application relates to the field of wastewater treatment technology, and in particular to a wastewater treatment system for water-based paint production. Background Art

[0002] The main components of water-based paint wastewater include water-based resins, pigments, additives, wetting agents, fillers, defoamers, pH regulators, thickeners, etc. Therefore, this type of wastewater has the characteristics of complex water quality components. In addition, the waste liquid from the cleaning of water-based paint production equipment and the laboratory stock solution have the characteristics of high pollutant concentration, intermittent water discharge, and irregular water discharge. These characteristics make water-based paint wastewater difficult to treat in traditional biochemical treatment processes. If it is discharged directly, it will have a serious impact on the water environment. Therefore, it is necessary to develop new water treatment technologies based on the characteristics of this type of water-based paint wastewater, so that the treated water can be recycled or connected to biochemical aerobic treatment before discharge to reduce pollution to the environment.

[0003] In the prior art, the wastewater generated during the production of water-based paint is often treated by adding paint mist coagulants and biochemical treatment. The water-based paint wastewater can be recycled and reused after being treated with paint mist coagulants. Biochemical treatment mainly requires a series of processes such as pretreatment, anaerobic, aerobic, etc. to meet the standards before it can be discharged. Paint mist coagulants are chemical methods and are double-dose AB types. They are directly added to the water curtain or circulating water to react with paint mist. They can condense the paint mist in the wastewater into loose clumps that float on the surface of the water body, and then the sticky paint mist in the wastewater can be removed by salvaging.

[0004] Common paint mist condensation wastewater treatment equipment mainly consists of a wastewater treatment tank, the top of which is fixedly connected with a stirring motor, a stirring rod, a wastewater pipe, an AB double agent dosing mechanism, a discharge mechanism, a high-pressure cleaning mechanism (connected to the water supply tank system), etc. After the wastewater with paint mist generated during production flows into the wastewater treatment tank through the wastewater pipe, the AB double agent dosing mechanism adds AB double agent into the wastewater treatment tank, and the stirring motor drives the stirring rod to rotate to ensure that the AB double agent is in uniform contact with the wastewater. When the paint mist is completely condensed to form suspended objects floating on the surface of the water body, the operator removes the condensed floating objects on the upper layer of the wastewater treatment tank, and the remaining water can be transported to the subsequent treatment system for treatment and discharge.

[0005] However, there is a deviation in the amount of wastewater generated during the production process, and the existing wastewater treatment equipment cannot quantitatively add AB agent according to the amount of wastewater in the wastewater treatment tank, and it is time-consuming and labor-intensive to manually remove the coagulants on the upper layer of the water body, so there is room for improvement. Utility Model Content

[0006] In order to achieve the effect of quantitatively adding agent A and agent B while saving the time and effort required by operators in the treatment of water-based paint wastewater, the present application provides a wastewater treatment system for water-based paint production.

[0007] The present application provides a wastewater treatment system for water-based paint production using the following technical solutions:

[0008] A wastewater treatment system for water-based paint production, comprising a wastewater treatment tank, an agent A storage tank, and an agent B storage tank, wherein a wastewater pipeline, a first raw material pipeline, and a second raw material pipeline are connected to the top of the wastewater treatment tank, wherein the liquid inlet end of the first raw material pipeline is connected to the agent A storage tank, and the liquid inlet end of the second raw material pipeline is connected to the agent B storage tank; and:

[0009] A wastewater volume detection unit, used for detecting the wastewater volume and outputting a wastewater volume signal;

[0010] A signal processing unit, signal-connected to the signal output terminal of the wastewater volume detection unit, for receiving the wastewater volume signal and outputting an A agent set volume signal, a B agent set volume signal and a first control signal;

[0011] A first quantitative dosing unit, installed on the first raw material pipeline, connected to the signal output end of the signal processing unit, for receiving the agent A set amount signal and dosing a quantitative amount of agent A into the wastewater treatment tank;

[0012] A second quantitative dosing unit, installed on the second raw material pipeline, connected to the signal output end of the signal processing unit, for receiving the B agent set amount signal and dosing a quantitative amount of B agent into the wastewater treatment tank;

[0013] A stirring motor, fixedly mounted on the top of the wastewater treatment tank, signal-connected to the signal output terminal of the signal processing unit, and configured to receive the first control signal and stir the wastewater;

[0014] a turbidity detection unit, installed on the inner wall of the wastewater treatment tank close to the lower layer, connected to the signal output end of the signal processing unit, for receiving the first control signal and detecting the turbidity of the wastewater, and outputting a second control signal when the turbidity of the wastewater is less than a set value;

[0015] A discharge mechanism, installed at the bottom of the wastewater treatment tank, connected to the signal output terminal of the turbidity detection unit, and used to receive the second control signal and discharge the water and condensate in the wastewater treatment tank;

[0016] The signal input end of the high-pressure cleaning mechanism and the stirring motor is connected to the signal output end of the turbidity detection unit. The high-pressure cleaning mechanism receives the second control signal and starts, and the stirring motor receives the second control signal and stops running.

[0017] By adopting the above technical solution, the wastewater generated in the production process is transported to the wastewater treatment tank through the wastewater pipeline. After the wastewater enters the wastewater treatment tank, the wastewater amount detection unit detects the wastewater amount in the wastewater treatment tank and outputs a wastewater amount signal. The signal processing unit calculates the actually required dosage A and B according to the wastewater amount in the wastewater treatment tank. The first quantitative dosing unit and the second quantitative dosing unit connected to the signal of the signal processing unit can quantitatively add agent A and agent B to the wastewater treatment tank. At the same time, the stirring motor drives the stirring rod to rotate to drive the wastewater and agent A in the wastewater treatment tank. , and agent B fully contacts, the paint mist in the wastewater condenses to form fluffy condensates and then suspends in the upper layer of the water body inside the wastewater treatment tank, and in this process, the lower layer of water in the wastewater treatment tank gradually becomes clear, the turbidity detection unit detects the turbidity of the water body, and when the turbidity of the lower layer of water body is less than the set value, it is determined that the paint mist condensation treatment is completed and a second control signal is output, then the stirring motor receives the second control signal and stops stirring, the discharging mechanism receives the second control signal and discharges the water body and condensates, and at the same time the high-pressure cleaning mechanism receives the second control signal and sprays high-pressure water to clean the wastewater treatment tank. Through the coordination and use of the wastewater volume detection unit, the signal processing unit, the first quantitative dosing unit and the second quantitative dosing unit, agent A and agent B can be automatically and quantitatively added according to the wastewater volume in the wastewater treatment tank, thereby ensuring the paint mist condensation effect and avoiding the cost waste caused by excessive dosing of agent A and agent B. Moreover, through the coordination and use of the turbidity detection unit and the discharge mechanism, the operation of automatically discharging the condensate can be realized, eliminating the need for the operator to manually fish out the condensate, thereby saving the manpower and time required for the treatment of wastewater from the production of water-based paint.

[0018] Preferably, the wastewater volume detection unit includes a first flow meter installed on the wastewater pipe.

[0019] By adopting the above technical solution, the amount of wastewater flowing into the wastewater treatment tank through the wastewater pipe can be detected by the first flow meter.

[0020] Preferably, the signal processing unit includes a first single chip microcomputer.

[0021] By adopting the above technical solution, the first single chip microcomputer can automatically calculate the actual amount of agent A and agent B required to be added according to the amount of wastewater, and automatically control the stirring motor and turbidity detection unit to start.

[0022] Preferably, the first quantitative dosing unit comprises:

[0023] A first dosing valve, installed on the first raw material pipeline, connected to the signal output terminal of the first single chip microcomputer, and used to receive the first control signal and start;

[0024] A second flow meter, installed on the first raw material pipeline, is signal-connected to the signal output terminal of the first single-chip computer, and is used to receive the first control signal and detect the agent A flowing into the wastewater treatment pipeline through the first raw material pipeline, and output an agent A dosage signal;

[0025] A second single-chip computer is connected to the signal output end of the second flow meter and the first single-chip computer, and is used to receive and compare the dosage signal of the agent A and the set amount signal of the agent A, and output a third control signal when the dosage of the agent A reaches the set amount of the agent A;

[0026] The signal input terminal of the first dosing valve is signal-connected to the signal output terminal of the second single-chip microcomputer, and the first dosing valve receives the third control signal and is turned off.

[0027] By adopting the above technical scheme, the first dosing valve is connected to the signal output end of the first single-chip microcomputer. The first dosing valve can be automatically started by the first single-chip microcomputer to add agent A into the wastewater treatment tank. During the process of adding agent A, the second flow meter detects the amount of A added into the wastewater treatment tank. When the actual dosage of agent A reaches the set dosage, the second single-chip microcomputer controls the first dosing valve to shut down, thereby achieving the technical effect of automatic and quantitative addition of agent A.

[0028] Preferably, the second quantitative dosing unit comprises:

[0029] A second dosing valve is installed on the first raw material pipeline and is connected to the signal output terminal of the first single chip microcomputer for receiving the first control signal and starting;

[0030] a third flow meter, installed on the first raw material pipeline, signal-connected to the signal output terminal of the first single-chip computer, for receiving the first control signal and detecting the agent B flowing into the wastewater treatment pipeline through the second raw material pipeline, and outputting a signal of the dosage of the agent B;

[0031] A third single chip microcomputer is connected to the signal output end of the second flow meter and the first single chip microcomputer, and is used to receive and compare the agent B dosage signal and the agent B setting amount signal, and output a fourth control signal when the agent B dosage reaches the agent B setting amount;

[0032] The signal input terminal of the second dosing valve is signal-connected to the signal output terminal of the second single-chip microcomputer, and the second dosing valve receives the fourth control signal and is turned off.

[0033] By adopting the above technical scheme, the second dosing valve is connected to the signal output end of the first single-chip microcomputer. The second dosing valve can be automatically started by the first single-chip microcomputer to add agent B into the wastewater treatment tank. During the process of adding agent B, the third flow meter detects the amount of agent B added into the wastewater treatment tank. When the actual dosage of agent B reaches the set dosage, the third single-chip microcomputer controls the second dosing valve to shut down, thereby achieving the technical effect of automatic and quantitative addition of agent B.

[0034] Preferably, the turbidity detection unit comprises:

[0035] A turbidity sensor, installed on the inner wall of the lower layer of the wastewater treatment tank, connected to the signal output terminal of the first single-chip microcomputer, used to receive the first control signal and detect the turbidity of the water in the wastewater treatment tank, and output a water turbidity signal;

[0036] A comparator chip, whose signal input terminal is signal-connected to the signal output terminal of the turbidity sensor, is used to receive and compare the water turbidity signal and output the second control signal when the water turbidity is less than a set value.

[0037] By adopting the above technical solution, when the paint mist in the wastewater is fully in contact with agent A and agent B and condenses into a condensate that floats to the upper layer of the water body, the turbidity of the wastewater gradually decreases. When the turbidity of the wastewater drops to less than the set value, it can be determined that the wastewater has completed the current treatment procedure. The comparator chip controls the stirring motor to stop running while controlling the discharge mechanism and the high-pressure cleaning mechanism to operate.

[0038] Preferably, a discharge pipe is provided at the bottom of the wastewater treatment tank, and a discharge valve is installed on the discharge pipe;

[0039] The discharging mechanism comprises a slag removal channel installed at the port of the discharging pipe, a plurality of water holes are opened at the bottom of the slag removal channel, and a water collecting box is fixedly connected to the bottom of the slag removal channel, and the water collecting box is communicated with a subsequent processing system, a slag removal screw is rotatably installed in the slag removal channel, a slag removal motor is fixedly installed on the outer wall of the slag removal channel, and a slag discharge pipe is opened at the bottom of one end of the slag removal channel away from the slag removal motor;

[0040] The signal input ends of the discharge valve and the slag removal motor are signal-connected to the signal output end of the comparator chip. The discharge valve receives the second control signal and starts, and the slag removal motor receives the second control signal and starts.

[0041] By adopting the above technical scheme, after the wastewater in the wastewater treatment tank is treated with paint mist condensation, the discharge valve on the discharge pipe is opened, and the water in the wastewater treatment tank is connected to the condensate and flows into the slag removal channel through the discharge pipe. In this process, the slag removal motor drives the slag removal screw to rotate at a uniform speed, and the spiral blades of the slag removal screw drive the condensate to move and flow out through the slag discharge pipe, while the water flows into the water collecting tank through the water outlet at the bottom of the slag removal channel and then flows to the subsequent treatment system, which can achieve the technical effect of automatically separating the water body and the condensate, eliminating the need for the operator to fish out the condensate by himself, and effectively saving the time and effort required for the operator to treat the wastewater produced by water-based paint.

[0042] Preferably, the slag removal channel is arranged to be inclined upward along the direction of conveying the condensate.

[0043] By adopting the above technical solution, the upward inclined setting of the slag removal channel can improve the effect of separating the water body and the condensate.

[0044] In summary, the present application provides a wastewater treatment system for water-based paint production, which includes at least one of the following beneficial technical effects:

[0045] 1. Through the mutual coordination and use of the first flow meter, the first single-chip microcomputer, the first dosing valve, the second dosing valve, the second single-chip microcomputer, the third single-chip microcomputer, the second flow meter and the third flow meter, the amount of wastewater entering the wastewater treatment tank can be automatically detected during the wastewater treatment process. The first single-chip microcomputer can automatically calculate the required A dosage and B dosage according to the amount of wastewater. The combination of the first dosing valve, the second dosing valve, the second single-chip microcomputer, the third single-chip microcomputer, the second flow meter and the third flow meter can achieve the technical effect of automatically dosing the set amount of A agent and B agent, which can ensure the condensation effect of the wastewater paint mist while avoiding excessive dosing of A agent and B agent, thereby saving production costs;

[0046] 2. Through the coordination and use of the turbidity sensor, comparator chip, discharge valve, slag removal motor and slag removal screw, it is possible to automatically detect the turbidity of the water body, and automatically discharge the water body and the condensate when the turbidity of the water body drops to less than the set value, and automatically separate the water body and the condensate, which can save the operator from the operation of manually scooping out the condensate, saving the operator's time and effort in the treatment of water-based paint wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of a sewage treatment system.

[0048] Figure 2 It is a schematic diagram of an embodiment of the present application for demonstrating internal signal transmission of a sewage treatment system.

[0049] Explanation of the reference numerals: 1. Wastewater treatment tank; 11. Wastewater pipeline; 12. Stirring motor; 13. First flow meter; 14. Discharge pipeline; 15. Discharge valve; 2. Agent A storage tank; 21. First raw material pipeline; 22. First quantitative dosing unit; 221. First dosing valve; 222. Second flow meter; 3. Agent B storage tank; 31. Second raw material pipeline; 32. Second quantitative dosing unit; 321. Second dosing valve; 322. Third flow meter; 4. Discharge mechanism; 41. Slag removal channel; 42. Water collecting tank; 43. Slag removal screw; 44. Slag removal motor; 45. Slag discharge pipeline; 5. High-pressure cleaning mechanism; 6. Turbidity sensor. DETAILED DESCRIPTION

[0050] The following is combined with Figure 1-2 This application is described in further detail.

[0051] Example

[0052] The present application embodiment discloses a wastewater treatment system for water-based paint production. Figure 1 and Figure 2 , including a wastewater treatment tank 1, an agent A storage tank 2, and an agent B storage tank 3. The top of the wastewater treatment tank is connected to a wastewater pipe 11, a first raw material pipe 21, and a second raw material pipe 31. The liquid inlet end of the first raw material pipe 21 is connected to the agent A storage tank 2, and the liquid inlet end of the second raw material pipe 31 is connected to the agent B storage tank 3.

[0053] And: a wastewater volume detection unit, used to detect the wastewater volume and output a wastewater volume signal; a signal processing unit, connected to the signal output end of the wastewater volume detection unit, used to receive the wastewater volume signal and output an A agent set amount signal, a B agent set amount signal and a first control signal; a first quantitative dosing unit 22, installed on the first raw material pipeline 21, connected to the signal output end of the signal processing unit, used to receive the A agent set amount signal and add a quantitative amount of A agent into the wastewater treatment tank 1; a second quantitative dosing unit 32, installed on the second raw material pipeline 31, connected to the signal output end of the signal processing unit, used to receive the B agent set amount signal and output a first control signal. A quantitative agent B is added into the wastewater treatment tank 1; a stirring motor 12 is fixedly installed on the top of the wastewater treatment tank 1, and is connected to the signal output end of the signal processing unit for receiving a first control signal and stirring the wastewater; a turbidity detection unit is installed on the inner wall of the wastewater treatment tank 1 close to the lower layer, and is connected to the signal output end of the signal processing unit for receiving a first control signal and detecting the turbidity of the wastewater, and outputting a second control signal when the turbidity of the wastewater is less than a set value; a discharging mechanism 4 is installed at the bottom of the wastewater treatment tank 1, and is connected to the signal output end of the turbidity detection unit for receiving a second control signal and discharging water and condensate in the wastewater treatment tank 1.

[0054] The signal input end of the high-pressure cleaning mechanism 5 and the stirring motor 12 is signal-connected to the signal output end of the turbidity detection unit. The high-pressure cleaning mechanism 5 receives the second control signal and starts, and the stirring motor 12 receives the second control signal and stops running.

[0055] The wastewater generated in the production process is transported to the wastewater treatment tank 1 through the wastewater pipe 11. After the wastewater enters the wastewater treatment tank 1, the wastewater amount detection unit detects the amount of wastewater in the wastewater treatment tank 1 and outputs a wastewater amount signal. The signal processing unit calculates the actually required dosage A and B according to the amount of wastewater in the wastewater treatment tank 1. The first quantitative dosing unit 22 and the second quantitative dosing unit 32 connected to the signal processing unit signal can quantitatively add agent A and agent B to the wastewater treatment tank 1. At the same time, the stirring motor 12 drives the stirring rod to rotate to drive the wastewater in the wastewater treatment tank 1 and the agent A and agent B. The paint mist in the wastewater is fully in contact with the agent, and the paint mist in the wastewater condenses to form fluffy condensates, which are then suspended in the upper layer of the water body inside the wastewater treatment tank 1. In this process, the lower layer of water in the wastewater treatment tank 1 gradually becomes clear, and the turbidity detection unit detects the turbidity of the water body, and when the turbidity of the lower layer of water is less than the set value, it is determined that the paint mist condensation treatment is completed and a second control signal is output. Subsequently, the stirring motor 12 receives the second control signal and stops stirring, and the discharging mechanism 4 receives the second control signal and discharges the water body and the condensate. At the same time, the high-pressure cleaning mechanism 5 receives the second control signal and sprays a high-pressure water flow to clean the wastewater treatment tank 1.

[0056] By matching and using the wastewater volume detection unit, the signal processing unit, the first quantitative dosing unit 22, and the second quantitative dosing unit 32, agent A and agent B can be automatically and quantitatively added according to the amount of wastewater in the wastewater treatment box 1, thereby ensuring the paint mist condensation effect and avoiding the cost waste caused by excessive addition of agent A and agent B. Moreover, by matching and using the turbidity detection unit and the discharge mechanism 4, the operation of automatically discharging the condensate can be realized, eliminating the need for the operator to manually fish out the condensate, thereby saving the manpower and time required for the treatment of wastewater from the production of water-based paint.

[0057] Reference Figure 1 In the embodiment of the present application, the wastewater volume detection unit adopts a first flow meter 13 installed on the wastewater pipe 11. The first flow meter 13 can detect the technical effect of the wastewater volume flowing into the wastewater treatment tank 1 through the wastewater pipe 11.

[0058] In the embodiment of the present application, the signal processing unit adopts the first single chip microcomputer. The first single chip microcomputer can automatically calculate the actual amount of agent A and agent B to be added according to the amount of wastewater, and automatically control the stirring motor 12 and the turbidity detection unit to start.

[0059] Reference Figure 1 and Figure 2The first quantitative dosing unit 22 includes: a first dosing valve 221, installed on the first raw material pipeline 21, connected to the signal output end of the first single-chip computer, used to receive the first control signal and start; a second flow meter 222, installed on the first raw material pipeline 21, connected to the signal output end of the first single-chip computer, used to receive the first control signal and detect the A agent flowing into the wastewater treatment pipeline through the first raw material pipeline 21, and output the A agent dosage signal; a second single-chip computer, connected to the second flow meter 222 and the signal output end of the first single-chip computer, used to receive the A agent dosage signal, the A agent set amount signal and compare, and output a third control signal when the A agent dosage reaches the A agent set amount.

[0060] The signal input terminal of the first dosing valve 221 is signal-connected to the signal output terminal of the second single-chip microcomputer, and the first dosing valve 221 receives the third control signal and is closed.

[0061] The first dosing valve 221 is connected to the signal output terminal of the first single-chip microcomputer. The first dosing valve 221 can be automatically started by the first single-chip microcomputer to add agent A into the wastewater treatment tank 1. During the process of adding agent A, the second flow meter 222 detects the amount of agent A added into the wastewater treatment tank 1. When the actual dosage of agent A reaches the set dosage, the second single-chip microcomputer controls the first dosing valve 221 to be closed, thereby achieving the technical effect of automatically and quantitatively adding agent A.

[0062] Reference Figure 1 and Figure 2 The second quantitative dosing unit 32 includes: a second dosing valve 321, installed on the first raw material pipeline 21, connected to the signal output end of the first single-chip computer, used to receive the first control signal and start; a third flow meter 322, installed on the first raw material pipeline 21, connected to the signal output end of the first single-chip computer, used to receive the first control signal and detect the B agent flowing into the wastewater treatment pipeline through the second raw material pipeline 31, and output the B agent dosage signal; the third single-chip computer, connected to the second flow meter 222 and the signal output end of the first single-chip computer, used to receive the B agent dosage signal, the B agent set amount signal and compare, and output a fourth control signal when the B agent dosage reaches the B agent set amount.

[0063] The signal input terminal of the second dosing valve 321 is signal-connected to the signal output terminal of the second single-chip microcomputer, and the second dosing valve 321 receives the fourth control signal and is closed.

[0064] The second dosing valve 321 is connected to the signal output terminal of the first single chip microcomputer. The second dosing valve 321 can be automatically started by the first single chip microcomputer to add agent B into the wastewater treatment tank 1. During the process of adding agent B, the third flow meter 322 detects the amount of agent B added into the wastewater treatment tank 1. When the actual dosage of agent B reaches the set dosage, the third single chip microcomputer controls the second dosing valve 321 to be closed, thereby achieving the technical effect of automatic and quantitative addition of agent B.

[0065] Reference Figure 1 and Figure 2 The turbidity detection unit includes: a turbidity sensor 6, which is installed on the inner wall of the lower layer of the wastewater treatment tank 1 and is signal-connected to the signal output end of the first single-chip microcomputer, for receiving a first control signal and detecting the turbidity of the water in the wastewater treatment tank 1, and outputting a water turbidity signal; a comparator chip, whose signal input end is signal-connected to the signal output end of the turbidity sensor 6, for receiving and comparing the water turbidity signal, and outputting a second control signal when the water is less than a set value.

[0066] When the paint mist in the wastewater is in full contact with agent A and agent B and condenses into a condensate that floats to the upper layer of the water body, the turbidity of the wastewater gradually decreases. When the turbidity of the wastewater drops to less than the set value, it can be determined that the wastewater has completed the current treatment procedure. The comparator chip controls the stirring motor 12 to stop running, while controlling the discharge mechanism 4 and the high-pressure cleaning mechanism 5 to run.

[0067] Reference Figure 2 A discharge pipe 14 is connected to the bottom of the wastewater treatment tank 1, and a discharge valve 15 is installed on the discharge pipe 14; the discharge mechanism 4 includes a slag removal channel 41 installed at the end of the discharge pipe 14, a plurality of water holes are opened at the bottom of the slag removal channel 41, and a water collecting box 42 is fixedly connected to the bottom of the slag removal channel 41, and the water collecting box 42 is connected to the subsequent treatment system, a slag removal screw 43 is rotatably installed in the slag removal channel 41, a slag removal motor 44 is fixedly installed on the outer wall of the slag removal channel 41, and a slag discharge pipe 45 is opened at the bottom of the end of the slag removal channel 41 away from the slag removal motor 44.

[0068] The signal input terminals of the discharge valve 15 and the slag removal motor 44 are signal-connected to the signal output terminal of the comparator chip. The discharge valve 15 receives the second control signal and starts, and the slag removal motor 44 receives the second control signal and starts.

[0069] After the wastewater in the wastewater treatment tank 1 has been treated with paint mist condensation, the discharge valve 15 on the discharge pipe 14 is opened, and the water in the wastewater treatment tank 1 is connected to the condensate and flows into the slag removal channel 41 through the discharge pipe 14. In this process, the slag removal motor 44 drives the slag removal screw 43 to rotate at a uniform speed, and the spiral blades of the slag removal screw 43 drive the condensate to move and flow out through the slag discharge pipe 45, while the water flows into the water collecting tank 42 through the water outlet at the bottom of the slag removal channel 41 and then flows to the subsequent treatment system, which can achieve the technical effect of automatically separating the water body and the condensate, eliminating the need for the operator to fish out the condensate by himself, and effectively saving the time and effort required for the operator to treat the wastewater produced by water-based paint.

[0070] Reference Figure 2 The slag removal channel 41 is arranged to be inclined upward along the direction of the condensate conveying. The slag removal channel 41 is arranged to be inclined upward to improve the effect of separating the water body and the condensate.

[0071] The implementation principle of a wastewater treatment system for water-based paint production in the embodiment of the present application is as follows: by matching and using the first flow meter 13, the first single-chip microcomputer, the first dosing valve 221, the second dosing valve 321, the second single-chip microcomputer, the third single-chip microcomputer, the second flow meter 222 and the third flow meter 322, the amount of wastewater entering the wastewater treatment tank 1 can be automatically detected during the wastewater treatment process, and the required A dosage and B dosage can be automatically calculated according to the wastewater amount through the first single-chip microcomputer, and the first dosing valve 221, the second dosing valve 321, the second single-chip microcomputer, the third single-chip microcomputer, the second flow meter 222 and the third flow meter 322 can be combined with each other. The use of three flow meters 322 can achieve the technical effect of automatically adding a set amount of agent A and agent B, which can ensure the condensation effect of wastewater paint mist while avoiding excessive addition of agent A and agent B, saving production costs; through the mutual coordination and use of the turbidity sensor 6, the comparator chip, the discharge valve 15, the slag removal motor 44 and the slag removal screw 43, it can realize automatic detection of water turbidity, and automatically discharge the water and condensate when the water turbidity drops to less than the set value, and automatically separate the water and condensate, which can avoid the operator's operation of manually scooping out the condensate, saving the operator's time and effort required in the treatment of water-based paint wastewater.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wastewater treatment system for water-based paint production, characterized in that: The invention comprises a wastewater treatment tank (1), an agent A storage tank (2), and an agent B storage tank (3); the top of the wastewater treatment tank is connected with a wastewater pipeline (11), a first raw material pipeline (21), and a second raw material pipeline (31); the liquid inlet end of the first raw material pipeline (21) is connected with the agent A storage tank (2), and the liquid inlet end of the second raw material pipeline (31) is connected with the agent B storage tank (3); and: A wastewater volume detection unit, used for detecting the wastewater volume and outputting a wastewater volume signal; A signal processing unit, signal-connected to the signal output terminal of the wastewater volume detection unit, for receiving the wastewater volume signal and outputting an A agent set volume signal, a B agent set volume signal and a first control signal; A first quantitative dosing unit (22), installed on the first raw material pipeline (21), connected to the signal output end of the signal processing unit, and used for receiving the agent A set amount signal and dosing a quantitative amount of agent A into the wastewater treatment tank (1); A second quantitative dosing unit (32), installed on the second raw material pipeline (31), signal-connected to the signal output end of the signal processing unit, and used for receiving the agent B set amount signal and dosing a quantitative amount of agent B into the wastewater treatment tank (1); A stirring motor (12), fixedly mounted on the top of the wastewater treatment tank (1), signal-connected to the signal output terminal of the signal processing unit, and used for receiving the first control signal and stirring the wastewater; a turbidity detection unit, installed on the inner wall of the wastewater treatment tank (1) close to the lower layer, connected to the signal output end of the signal processing unit, used for receiving the first control signal and detecting the turbidity of the wastewater, and outputting a second control signal when the turbidity of the wastewater is less than a set value; A discharge mechanism (4), installed at the bottom of the wastewater treatment tank (1), connected to the signal output terminal of the turbidity detection unit, and used for receiving the second control signal and discharging the water and condensate in the wastewater treatment tank (1); The signal input end of the high-pressure cleaning mechanism (5) and the stirring motor (12) is signal-connected to the signal output end of the turbidity detection unit; the high-pressure cleaning mechanism (5) receives the second control signal and starts, and the stirring motor (12) receives the second control signal and stops running.

2. A wastewater treatment system for water-based paint production according to claim 1, characterized in that: The wastewater volume detection unit comprises a first flow meter (13) installed on the wastewater pipe (11).

3. A wastewater treatment system for water-based paint production according to claim 2, characterized in that: The signal processing unit includes a first single chip microcomputer.

4. A wastewater treatment system for water-based paint production according to claim 3, characterized in that: The first quantitative dosing unit (22) comprises: A first dosing valve (221) is installed on the first raw material pipeline (21), is signal-connected to the signal output terminal of the first single-chip computer, and is used to receive the first control signal and start; a second flow meter (222), installed on the first raw material pipeline (21), signal-connected to the signal output terminal of the first single-chip computer, for receiving the first control signal and detecting the agent A flowing into the wastewater treatment pipeline through the first raw material pipeline (21), and outputting an agent A dosage signal; A second single chip computer is connected to the second flow meter (222) and the signal output terminal of the first single chip computer, and is used to receive and compare the agent A dosage signal and the agent A setting amount signal, and output a third control signal when the agent A dosage reaches the agent A setting amount; The signal input end of the first dosing valve (221) is signal-connected to the signal output end of the second single-chip computer, and the first dosing valve (221) receives the third control signal and is closed.

5. A wastewater treatment system for water-based paint production according to claim 4, characterized in that: The second quantitative dosing unit (32) comprises: A second dosing valve (321) is installed on the first raw material pipeline (21), is signal-connected to the signal output terminal of the first single-chip computer, and is used to receive the first control signal and start; a third flow meter (322), installed on the first raw material pipeline (21), signal-connected to the signal output terminal of the first single-chip computer, for receiving the first control signal and detecting the agent B flowing into the wastewater treatment pipeline through the second raw material pipeline (31), and outputting an agent B dosage signal; a third single chip computer, connected to the second flow meter (222) and the signal output terminal of the first single chip computer, for receiving and comparing the agent B dosage signal and the agent B setting amount signal, and outputting a fourth control signal when the agent B dosage reaches the agent B setting amount; The signal input end of the second dosing valve (321) is signal-connected to the signal output end of the second single-chip computer, and the second dosing valve (321) receives the fourth control signal and is closed.

6. A wastewater treatment system for water-based paint production according to claim 5, characterized in that: The turbidity detection unit comprises: a turbidity sensor (6), mounted on the inner wall of the lower layer of the wastewater treatment tank (1), connected to the signal output terminal of the first single-chip microcomputer, used for receiving the first control signal and detecting the turbidity of the water in the wastewater treatment tank (1), and outputting a water turbidity signal; A comparator chip, whose signal input end is signal-connected to the signal output end of the turbidity sensor (6), is used to receive and compare the water turbidity signal and output the second control signal when the water turbidity is less than a set value.

7. A wastewater treatment system for water-based paint production according to claim 6, characterized in that: The bottom of the wastewater treatment tank (1) is connected to a discharge pipe (14), and a discharge valve (15) is installed on the discharge pipe (14); The discharge mechanism (4) comprises a slag removal channel (41) installed at the port of the discharge pipe (14), a plurality of water holes are opened at the bottom of the slag removal channel (41), and a water collecting box (42) is fixedly connected to the bottom of the slag removal channel (41), and the water collecting box (42) is connected to a subsequent processing system. A slag removal screw (43) is rotatably installed in the slag removal channel (41), a slag removal motor (44) is fixedly installed on the outer wall of the slag removal channel (41), and a slag discharge pipe (45) is opened at the bottom of one end of the slag removal channel (41) away from the slag removal motor (44); The signal input ends of the discharge valve (15) and the slag removal motor (44) are signal-connected to the signal output end of the comparator chip; the discharge valve (15) receives the second control signal and starts; and the slag removal motor (44) receives the second control signal and starts.

8. A wastewater treatment system for water-based paint production according to claim 7, characterized in that: The slag removal channel (41) is arranged to be inclined upward along the direction of conveying the condensate.

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