Efficient recovery system for sewage of cleaning lithium battery slurry mixing section production line equipment parts

Abstract

The utility model discloses a high -efficient recovery system of sewage of cleaning lithium battery mix slurry section production line equipment part, it includes sewage pool, raw water extraction unit, primary separation unit, separation liquid extraction unit, secondary separation unit, secondary thick slurry collection unit, raw water extraction unit promotes the raw water in sewage pool to primary separation unit and handles, primary separation unit centrifugal separation raw water into primary separation liquid and primary separation solid, separation liquid extraction unit promotes primary separation liquid to secondary separation unit and handles, secondary separation unit separates primary separation liquid into thick slurry and light liquid, and raw water extraction unit promotes the thick slurry in secondary thick slurry collection unit to primary separation unit and handles again, the utility model discloses a high -efficient recovery system through setting horizontal screw centrifuge and disc centrifuge two centrifuges, has improved the recovery rate of effective material in sewage greatly, can be up to 95% or above.

Description

Technical Field

[0001] This utility model relates to an efficient recycling system for positive and negative electrode materials of lithium batteries, specifically involving cleaning parts of equipment in the slurry mixing section of a battery production line and recycling the positive and negative electrode materials of lithium batteries from the wastewater generated during cleaning. Background Technology

[0002] With increasing environmental awareness and dwindling petroleum resources, more people are opting to buy electric vehicles for transportation, leading to a growing demand for lithium batteries, the "heart" of electric vehicles.

[0003] As the number of lithium batteries increases, more positive and negative electrode materials are needed, while the rising prices of lithium battery positive and negative electrodes are increasing costs for manufacturers. At the same time, the emissions of these materials pollute the environment. Therefore, recycling these materials can reduce environmental pollution and lower production costs for manufacturers. However, currently, there is no equipment on the market that can efficiently recycle these materials. Utility Model Content

[0004] The problem to be solved by this utility model is to provide a high-efficiency recycling system for wastewater from cleaning parts of lithium battery slurry production line equipment. By setting up two centrifuges, namely a horizontal screw centrifuge and a disc centrifuge, it greatly improves the recovery rate of effective materials in wastewater, which can reach more than 95%.

[0005] This utility model relates to a high-efficiency wastewater recovery system for cleaning parts of lithium battery slurry production line equipment. It includes a wastewater tank, a raw water extraction unit, a primary separation unit, a separated liquid extraction unit, a secondary separation unit, and a secondary concentrated slurry collection unit. The raw water extraction unit pumps raw water from the wastewater tank to the primary separation unit for treatment. The primary separation unit centrifuges the raw water into a primary separated liquid and a primary separated solid. The separated liquid extraction unit pumps the primary separated liquid to the secondary separation unit for treatment. The secondary separation unit separates the primary separated liquid into a concentrated slurry and a light liquid. The raw water extraction unit pumps the concentrated slurry entering the secondary concentrated slurry collection unit back to the primary separation unit for further treatment.

[0006] Furthermore, the raw water extraction unit includes a raw water extraction pump, a raw water inlet valve, a slurry return valve, an outlet valve, a flow meter I, an inlet pipe I, an inlet pipe II, and an outlet pipe I. The raw water extraction pump is connected to the sewage tank through the inlet pipe I, to the secondary slurry collection unit through the inlet pipe II, and to the primary separation unit through the outlet pipe I. The raw water inlet valve, the slurry return valve, and the outlet valve are respectively installed on the inlet pipe I, the inlet pipe II, and the outlet pipe I. The flow meter I is installed on the integrated pipeline of the inlet pipe I and the inlet pipe II.

[0007] Furthermore, the primary separation unit includes a horizontal screw centrifuge, a primary separation liquid buffer tank, and a primary separation solids collection tank; the horizontal screw centrifuge is connected to the raw water extraction pump through water outlet pipe I, and its liquid outlet and slag outlet are respectively connected to the primary separation liquid buffer tank and the primary separation solids collection tank.

[0008] Furthermore, the separation liquid extraction unit includes a primary separation liquid booster pump, a primary separation liquid discharge valve, a primary separation liquid reflux valve, a flow meter II, an inlet pipe III, and an outlet pipe II. The primary separation liquid booster pump is connected to the primary separation liquid buffer tank through the inlet pipe III and to the secondary separation unit through the outlet pipe II. A flow meter II is installed on the inlet pipe III, and a primary separation liquid discharge valve and a primary separation liquid reflux valve are installed on the outlet pipe II along the water outlet direction.

[0009] Furthermore, the secondary separation unit includes a disc centrifuge; the disc centrifuge is connected to the primary separation liquid booster pump through the water outlet pipe II, and its slag outlet and liquid outlet are respectively connected to the secondary slurry collection unit and the sewage treatment station.

[0010] Furthermore, the secondary slurry collection unit includes a slurry collection tank, a stirring motor, and a level gauge I; the stirring motor is located in the middle of the slurry collection tank, and the level gauge I is located inside the slurry collection tank and close to the side wall; the slurry collection tank is connected to the raw water extraction pump through an inlet pipe II.

[0011] Furthermore, the high-efficiency recycling system also includes an ultrasonic cleaning unit and a wastewater discharge unit. The ultrasonic cleaning unit is used to clean the parts of the mixing section production line equipment, and the wastewater discharge unit is used to discharge the cleaned wastewater into the factory's wastewater pool.

[0012] Furthermore, the ultrasonic cleaning unit includes an ultrasonic cleaner, a clean water supply valve, and a level gauge II. The clean water supply valve is located outside the side wall of the ultrasonic cleaner, and the level gauge II is located inside the side wall of the ultrasonic cleaner. The wastewater discharge unit includes a wastewater discharge pump, a wastewater discharge valve, a flow meter III, an inlet pipe IV, and an outlet pipe III. The wastewater discharge pump is connected to the outlet of the ultrasonic cleaner through the inlet pipe IV and to the wastewater tank through the outlet pipe III. The flow meter III is installed on the inlet pipe IV, and the wastewater discharge valve is installed on the outlet pipe III.

[0013] Furthermore, the high-efficiency recovery system also includes a dosing unit, which includes a dosing tank, a metering pump, and a mixer; the mixer is installed inside the dosing tank, and the metering pump is connected to the primary separation liquid buffer tank through a pipeline.

[0014] Furthermore, the high-efficiency recovery system also includes a frame, which supports the entire equipment and fixes all units. The various units are integrated together and located inside the frame: the ultrasonic cleaning unit and the chemical dosing unit are located at the left and right ends of the frame, respectively; the sewage discharge unit is located below the ultrasonic cleaning unit; and from left to right, the raw water extraction unit, the primary separation unit, and the separated liquid extraction unit are arranged between the ultrasonic cleaning unit and the chemical dosing unit. The secondary separation unit and the secondary slurry collection unit are located in front of the primary separation unit and the separated liquid extraction unit.

[0015] The workflow of this high-efficiency recycling system is as follows: a raw water extraction pump draws wastewater from the sewage tank to a horizontal screw centrifuge. The horizontal screw centrifuge separates recyclable materials in the wastewater into primary separation solids and primary separation liquid. The primary separation solids enter a collection tank, while the primary separation liquid enters a buffer tank and is then lifted by a primary separation liquid lift pump before entering a disc centrifuge. The disc centrifuge separates the primary separation liquid into a portion of high-concentration slurry and a portion of light liquid with extremely low solid content. The light liquid is directly discharged to the sewage treatment plant for purification. The high-concentration slurry enters a slurry collection tank and is then lifted by a raw water extraction pump to a horizontal screw centrifuge for further separation.

[0016] The advantages of this high-efficiency recovery system are as follows: 1. It uses two centrifuges: a horizontal screw centrifuge and a disc centrifuge. The primary separated liquid from the wastewater after separation in the horizontal screw centrifuge undergoes secondary treatment in the disc centrifuge. The concentrated slurry obtained after the secondary separation is then reprocessed in the horizontal screw centrifuge. This process recovers solids from the primary separated liquid, which has a very low solids content, greatly improving the recovery rate of effective materials (lithium battery positive and negative electrode materials) in the wastewater, reaching over 95%. 2. The recovered material in the primary separated solids collection tank has a moisture content of less than 10%, eliminating the need for further sedimentation and drying. 3. The light liquid obtained after secondary separation has an extremely low material content, reducing the burden on subsequent wastewater treatment and mitigating environmental pollution. In summary, this recovery system has an extremely high recovery capacity, capable of recovering wastewater with a maximum concentration of 10%. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the connections between the various units in the recycling system of this utility model;

[0018] Figure 2 This is a schematic diagram of the ultrasonic cleaning unit.

[0019] Figure 3 This is a schematic diagram of the wastewater discharge unit.

[0020] Figure 4 This is a schematic diagram of the raw water extraction unit.

[0021] Figure 5This is a schematic diagram of the structure of the primary separation unit;

[0022] Figure 6 This is a schematic diagram of the separation liquid extraction unit;

[0023] Figure 7 This is a schematic diagram of the structure of the two-stage separation unit;

[0024] Figure 8 This is a schematic diagram of the structure of the secondary thick slurry collection unit;

[0025] Figure 9 This is a schematic diagram of the dosing unit.

[0026] Figure 10 This is a schematic diagram of the integrated recycling system of this utility model. Figure 1 ;

[0027] Figure 11 This is a schematic diagram of the integrated recycling system of this utility model. Figure 2 . Detailed Implementation

[0028] The embodiments described herein are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

[0029] Example 1

[0030] from Figure 1 , Figure 10 , Figure 11 As can be seen, the high-efficiency recycling system of this utility model includes a sewage tank 10, a raw water extraction unit 4, a primary separation unit 5, a separated liquid extraction unit 6, a secondary separation unit 7, and a secondary slurry collection unit 8. The raw water extraction unit 4 pumps the raw water in the sewage tank 10 to the primary separation unit 5 for treatment. The primary separation unit 5 centrifuges the raw water into a primary separated liquid and a primary separated solid. The separated liquid extraction unit 6 pumps the primary separated liquid to the secondary separation unit 7 for treatment. The secondary separation unit 7 separates the primary separated liquid into a slurry and a light liquid. The raw water extraction unit 4 pumps the slurry entering the secondary slurry collection unit 8 to the primary separation unit 5 for further treatment.

[0031] The working principle of this high-efficiency recycling system is as follows: Large equipment and parts in the slurry mixing section of the battery production line are manually cleaned directly in the wastewater tank 10. The cleaned wastewater is then directly discharged into the wastewater tank 10. The raw water extraction unit 4 extracts the wastewater from the wastewater tank 10 to the primary separation unit 5. The primary separation unit 5 separates the recyclable materials in the wastewater into a portion of solids and a portion of primary separation liquid with very low solid content. The primary separation liquid is then pumped through the separation liquid extraction unit 6 and enters the secondary separation unit 7. The secondary separation unit 7 further separates the low-concentration primary liquid into a portion of concentrated slurry with higher concentration and a portion of light liquid with extremely low solid content. The light liquid flows by gravity to the wastewater treatment plant for purification. The concentrated slurry with higher concentration is discharged to the secondary concentrated slurry collection unit 8, and then pumped back to the primary separation unit 5 through the raw water extraction unit 4 for secondary separation. The solids separated in the primary separation unit 5 can be directly recycled.

[0032] Example 2

[0033] from Figure 1 , Figure 10 , Figure 11 , Figure 4 As can be seen, the high-efficiency recycling system of this utility model includes: raw water extraction unit 4, which includes raw water extraction pump 401, raw water inlet valve 402, slurry return valve 403, outlet valve 404, flow meter I 405, inlet pipe I 406, inlet pipe II 407, and outlet pipe I 408; the raw water extraction pump 401 is connected to the sewage tank through inlet pipe I 406, to the secondary slurry collection unit 8 through inlet pipe II 407, and to the primary separation unit 5 through outlet pipe I 408; the raw water inlet valve 402, slurry return valve 403, and outlet valve 404 are respectively installed on inlet pipe I 406, inlet pipe II 407, and outlet pipe I 408; and the flow meter I 405 is installed on the integrated pipeline of inlet pipe I 406 and inlet pipe II 407.

[0034] Open the raw water inlet valve 402 and outlet valve 404, and start the raw water extraction pump 401 to pump the raw water in the sewage tank to the primary separation unit 5 for treatment; open the raw water inlet valve 402 and slurry return valve 403, and start the raw water extraction pump 401 to pump the slurry in the secondary slurry collection unit 8 to the primary separation unit 5 for treatment. Flow meter I 405 is used to monitor whether the sewage flow rate is abnormal, and at the same time record the amount of sewage extracted.

[0035] Example 3

[0036] from Figure 1 , Figure 10 , Figure 11 , Figure 5It can be seen that the high-efficiency recycling system of this utility model includes a first-stage separation unit 5 comprising a horizontal screw centrifuge 501, a first-stage separation liquid buffer tank 502, and a first-stage separation solid collection tank 503; the horizontal screw centrifuge 501 is connected to the raw water extraction pump 401 through a water outlet pipe I 406, and its liquid outlet and slag discharge outlet are respectively connected to the first-stage separation liquid buffer tank 502 and the first-stage separation solid collection tank 503.

[0037] Raw water enters a horizontal decanter centrifuge 501 and is separated into two parts: a primary separation liquid and primary separation solids. The primary separation liquid enters a primary separation liquid buffer tank 502, and the primary separation solids enter a primary separation solids collection tank 503. The solid content in the primary separation liquid is very low, and it enters the secondary separation unit 7 through the separation liquid extraction unit 6. The positive and negative electrode materials in the wastewater are mainly found in the primary separation solids, which are directly collected and recycled. The horizontal decanter centrifuge 501 can directly perform coarse filtration on wastewater with high depth, resulting in a lower water content in the solids compared to the previous method of diluting the wastewater before separating it in a disc centrifuge.

[0038] Example 4

[0039] from Figure 1 , Figure 10 , Figure 11 , Figure 6 It can be seen that the high-efficiency recovery system of this utility model includes a separation liquid extraction unit 6 comprising a primary separation liquid booster pump 601, a primary separation liquid discharge valve 602, a primary separation liquid reflux valve 603, a flow meter II 604, an inlet pipe III 605, and an outlet pipe II 606. The primary separation liquid booster pump 601 is connected to the primary separation liquid buffer tank 502 through the inlet pipe III 605 and to the secondary separation unit 7 through the outlet pipe II 606. The flow meter II 604 is installed on the inlet pipe III 605, and the primary separation liquid discharge valve 602 and the primary separation liquid reflux valve 603 are installed on the outlet pipe II 606 along the water outlet direction.

[0040] Open the primary separator discharge valve 602 and start the primary separator booster pump 601 to lift the primary separator from the primary separator buffer tank 502 to the secondary separation unit 7 for secondary separation. With the primary separator discharge valve 602 closed, intermittently start the primary separator reflux valve 603 to agitate the separator in the primary separator buffer tank 502 using the reflux, preventing suspended solids in the separator from settling. Flow meter II 604 is used to monitor whether the flow rate of the primary separator is abnormal and to record the amount of primary separator extracted.

[0041] Example 5

[0042] from Figure 1 , Figure 10 , Figure 11 , Figure 7It can be seen that the high-efficiency recovery system of this utility model includes a secondary separation unit 7, which includes a disc centrifuge 701. The disc centrifuge 701 is connected to the primary separation liquid booster pump 601 through a water outlet pipe II 606, and its slag outlet and liquid outlet are respectively connected to the secondary slurry collection unit 8 and the sewage treatment station 11.

[0043] After secondary separation, the primary separated liquid enters the disc centrifuge 701 for secondary separation. Part of it becomes a thick slurry and enters the secondary thick slurry collection unit 8 from the slag outlet, while the other part becomes a light liquid and enters the wastewater treatment plant 11 from the liquid outlet. The disc centrifuge 701 performs fine filtration on the wastewater, i.e., the primary separated liquid.

[0044] Example 6

[0045] from Figure 1 , Figure 10 , Figure 11 , Figure 8 It can be seen that the high-efficiency recovery system of this utility model includes a secondary slurry collection unit 8 comprising a slurry collection tank 801, a stirring motor 802, and a level gauge I 803; the stirring motor 802 is located in the middle of the slurry collection tank 801, and the level gauge I 803 is located inside the slurry collection tank 801 and close to the side wall; the slurry collection tank 801 is connected to the raw water extraction pump 401 through an inlet pipe II 407.

[0046] The stirring motor 802 continuously stirs the slurry in the slurry collection tank 801 to prevent suspended solids from settling. The slurry return valve 403 is opened, and the raw water extraction pump 401 is started to lift the slurry from the collection tank 801 to the horizontal screw centrifuge 501 for separation into a liquid and solid material. The liquid enters the primary separation liquid buffer tank 502, and the solid material enters the primary separation solid collection tank 503. The level gauge I 803 monitors the amount of slurry, thereby determining the start and stop of the raw liquid extraction pump 401.

[0047] Example 7

[0048] from Figure 1 , Figure 10 , Figure 11 It can be seen that the high-efficiency recycling system of this utility model includes an ultrasonic cleaning unit 2 and a sewage discharge unit 3. The ultrasonic cleaning unit 2 is used to clean the parts of the mixing section production line equipment, and the sewage discharge unit 3 is used to discharge the cleaned sewage into the sewage pool 10.

[0049] Example 8

[0050] from Figure 1 , Figure 10 , Figure 11 , Figure 2 , Figure 3It can be seen that the high-efficiency recycling system of this utility model includes: ultrasonic cleaning unit 2, which includes ultrasonic cleaner 201, clean water replenishment valve 202, and level gauge II 203. The clean water replenishment valve 202 is located outside the side wall of ultrasonic cleaner 201, and the level gauge II 203 is located inside the side wall of ultrasonic cleaner 201; sewage discharge unit 3 includes sewage discharge pump 301, sewage discharge valve 302, flow meter III 303, inlet pipe IV 304, and outlet pipe III 305. Sewage discharge pump 301 is connected to the outlet of ultrasonic cleaner 201 through inlet pipe IV 304 and to sewage tank through outlet pipe III 305. Flow meter III 303 is installed on inlet pipe IV 304, and sewage discharge valve 302 is installed on outlet pipe III 305.

[0051] Open the clean water replenishment valve 202 to inject clean water into the ultrasonic cleaner 201. Control the liquid level through the level gauge II 203. After the water is full, put in small equipment and small parts for cleaning. Open the sewage discharge valve 302 and start the sewage discharge pump 301 to discharge the cleaned sewage into the sewage tank 10 through the sewage discharge unit 3. The flow meter III 303 monitors whether the flow is abnormal.

[0052] Example 9

[0053] from Figure 1 , Figure 10 , Figure 11 , Figure 9 It can be seen that the high-efficiency recovery system of this utility model includes a dosing unit 9, which includes a dosing tank 901, a metering pump 902, and a mixer 903. The mixer 903 is installed inside the dosing tank 901, and the metering pump 902 is connected to the primary separation liquid buffer tank 502 through a pipeline.

[0054] Since the wastewater contains detergent used during cleaning, a large number of bubbles will be generated after centrifugation. Therefore, defoamer is added to the dosing tank 901, diluted and stirred by the mixer 903. The defoamer is then added to the primary separation liquid buffer tank 502 through the metering pump 902 to remove foam from the separation liquid and prevent overflow of the tank.

[0055] Example 10

[0056] from Figure 10 , Figure 11As can be seen, the high-efficiency recycling system of this utility model includes a frame 1, which is used to support the entire equipment and fix all units. All units are integrated together and located inside the frame 1: the ultrasonic cleaning unit 2 and the chemical dosing unit 9 are located at the left and right ends of the frame 1, respectively, and the sewage discharge unit 3 is located below the ultrasonic cleaning unit 2. From left to right, the raw water extraction unit 4, the primary separation unit 5, and the separated liquid extraction unit 6 are arranged between the ultrasonic cleaning unit 2 and the chemical dosing unit 9. The secondary separation unit 7 and the secondary slurry collection unit 8 are arranged in front of the primary separation unit 5 and the separated liquid extraction unit 6.

[0057] In summary, the highly integrated units of this utility model's efficient recycling system occupy a small volume, are easy to use, and can adapt to various working environments, ensuring stable operation even in relatively unfavorable environments. However, this utility model is not limited to the integration method shown in the figure. Regardless of the relative vertical and horizontal positions of the units, as long as they involve the functional units of this utility model, they should be within the protection scope of this utility model.

[0058] The working process of this utility model's high-efficiency recycling system is as follows: the raw water extraction pump 401 extracts sewage from the sewage tank to the horizontal screw centrifuge 501. The horizontal screw centrifuge 501 separates the recyclable materials in the sewage into primary separation solids and primary separation liquid (with very low solid content). The primary separation solids enter the collection tank 503, and the primary separation liquid enters the buffer tank 502 and is then lifted by the primary separation liquid lift pump 601 before entering the disc centrifuge 701. The disc centrifuge separates the primary separation liquid into a part of high-concentration slurry and a part of light liquid with extremely low solid content. The light liquid is directly discharged to the sewage treatment plant for purification treatment, and the high-concentration slurry enters the slurry collection tank 801 and is then lifted by the raw water extraction pump 401 to the horizontal screw centrifuge 501 for further separation.

[0059] The advantages of this high-efficiency recovery system are as follows: 1. It uses two centrifuges: a horizontal screw centrifuge and a disc centrifuge. The primary separated liquid from the wastewater after separation in the horizontal screw centrifuge undergoes secondary treatment in the disc centrifuge. The concentrated slurry obtained after the secondary separation is then reprocessed in the horizontal screw centrifuge. This process recovers solids from the primary separated liquid, which has a very low solids content, greatly improving the recovery rate of effective materials in the wastewater, reaching over 95%. 2. The recovered material in the primary separated solids collection tank has a moisture content of less than 10%, eliminating the need for further sedimentation and drying. 3. The light liquid obtained after secondary separation has an extremely low material content, reducing the burden on subsequent wastewater treatment and mitigating environmental pollution. In summary, this recovery system has an extremely high recovery capacity, capable of recovering wastewater with a maximum concentration of 10%.

Claims

1. A high-efficiency wastewater recovery system for cleaning parts of lithium battery slurry production line equipment, characterized by: It includes a sewage tank (10), a raw water extraction unit (4), a primary separation unit (5), a separated liquid extraction unit (6), a secondary separation unit (7), and a secondary slurry collection unit (8); the raw water extraction unit (4) pumps the raw water in the sewage tank (10) to the primary separation unit (5) for treatment; the primary separation unit (5) centrifuges the raw water into primary separated liquid and primary separated solid; the separated liquid extraction unit (6) pumps the primary separated liquid to the secondary separation unit (7) for treatment; The secondary separation unit (7) separates the primary separation liquid into a thick slurry and a light liquid. The raw water extraction unit (4) lifts the thick slurry that enters the secondary thick slurry collection unit (8) to the primary separation unit (5) for further processing.

2. The high-efficiency recycling system according to claim 1, characterized in that: The raw water extraction unit (4) includes a raw water extraction pump (401), a raw water inlet valve (402), a slurry return valve (403), an outlet valve (404), a flow meter I (405), an inlet pipe I (406), an inlet pipe II (407), and an outlet pipe I (408). The raw water extraction pump (401) is connected to the sewage tank through the inlet pipe I (406), to the secondary slurry collection unit (8) through the inlet pipe II (407), and to the primary separation unit (5) through the outlet pipe I (408). The raw water inlet valve (402), the slurry return valve (403), and the outlet valve (404) are respectively installed on the inlet pipe I (406), the inlet pipe II (407), and the outlet pipe I (408). The flow meter I (405) is installed on the integrated pipeline of the inlet pipe I (406) and the inlet pipe II (407).

3. The high-efficiency recycling system according to claim 2, characterized in that: The primary separation unit (5) includes a horizontal screw centrifuge (501), a primary separation liquid buffer tank (502), and a primary separation solid collection tank (503); the horizontal screw centrifuge (501) is connected to the raw water pump (401) through the water outlet pipe I (408), and its liquid outlet and slag outlet are respectively connected to the primary separation liquid buffer tank (502) and the primary separation solid collection tank (503).

4. The high-efficiency recycling system according to claim 3, characterized in that: The separation liquid extraction unit (6) includes a primary separation liquid booster pump (601), a primary separation liquid discharge valve (602), a primary separation liquid return valve (603), a flow meter II (604), an inlet pipe III (605), and an outlet pipe II (606). The primary separation liquid booster pump (601) is connected to the primary separation liquid buffer tank (502) through the inlet pipe III (605) and to the secondary separation unit (7) through the outlet pipe II (606). A flow meter II (604) is installed on the inlet pipe III (605), and a primary separation liquid discharge valve (602) and a primary separation liquid return valve (603) are installed on the outlet pipe II (606) along the water outlet direction.

5. The high-efficiency recycling system according to claim 4, characterized in that: two-stage... The separation unit (7) includes a disc centrifuge (701); the disc centrifuge (701) is connected to the primary separation liquid booster pump (601) through the water outlet pipe II (606), and its slag outlet and liquid outlet are respectively connected to the secondary slurry collection unit (8) and the sewage treatment station.

6. The high-efficiency recycling system according to claim 2, characterized in that: The secondary slurry collection unit (8) includes a slurry collection tank (801), a stirring motor (802), and a level gauge I (803); the stirring motor (802) is located in the middle of the slurry collection tank (801), and the level gauge I (803) is located inside the slurry collection tank (801) and close to the side wall; the slurry collection tank (801) is connected to the raw water pump (401) through the water inlet pipe II (407).

7. The high-efficiency recycling system according to claim 1, characterized in that: It also includes an ultrasonic cleaning unit (2) and a sewage discharge unit (3). The ultrasonic cleaning unit (2) is used to clean the parts of the mixing section production line equipment, and the sewage discharge unit (3) is used to discharge the cleaned sewage into the sewage pool.

8. The high-efficiency recycling system according to claim 7, characterized in that: The ultrasonic cleaning unit (2) includes an ultrasonic cleaner (201), a clean water supply valve (202), and a level gauge II (203). The clean water supply valve (202) is located outside the side wall of the ultrasonic cleaner (201), and the level gauge II (203) is located inside the side wall of the ultrasonic cleaner (201). The sewage discharge unit (3) includes a sewage discharge pump (301), a sewage discharge valve (302), a flow meter III (303), an inlet pipe IV (304), and an outlet pipe III (305). The sewage discharge pump (301) is connected to the outlet of the ultrasonic cleaner (201) through the inlet pipe IV (304) and to the sewage tank through the outlet pipe III (305). The flow meter III (303) is installed on the inlet pipe IV (304), and the sewage discharge valve (302) is installed on the outlet pipe III (305).

9. The high-efficiency recycling system according to claim 3, characterized in that: It also includes a dosing unit (9), which includes a dosing tank (901), a metering pump (902), and a mixer (903); the mixer (903) is installed inside the dosing tank (901), and the metering pump (902) is connected to the primary separation liquid buffer tank (502) through a pipeline.

10. The high-efficiency recycling system according to claim 1, characterized in that: It also includes a frame (1), which is used to support the entire equipment and fix all units. The various units are integrated together and located inside the frame (1): the ultrasonic cleaning unit (2) and the dosing unit (9) are located at the left and right ends of the frame (1) respectively, the sewage discharge unit (3) is located below the ultrasonic cleaning unit (2), and the raw water extraction unit (4), the primary separation unit (5), and the separation liquid extraction unit (6) are arranged sequentially from left to right between the ultrasonic cleaning unit (2) and the dosing unit (9). The secondary separation unit (7) and the secondary slurry collection unit (8) are arranged in front of the primary separation unit (5) and the separation liquid extraction unit (6).

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