A kind of wastewater treatment device for circuit board ink production

Abstract

This utility model discloses a wastewater treatment device for circuit board ink production, including a base plate with a mounting bracket fixedly connected to the top of the base plate. A controller is fixedly mounted on the mounting bracket by bolts. The coarse filter chamber has a first inlet and a first outlet, arranged at different heights, with a coarse filter screen detachably installed between them. A flocculation reaction tank contains a stirring paddle, whose connecting shaft is driven by a motor via a coupling. The side wall of the flocculation reaction tank has a second inlet and a second outlet. This device effectively removes suspended solids, flocculants, and impurities from water through a multi-stage treatment process involving the coarse filter chamber, flocculation reaction tank, sedimentation tank, and multi-stage filtration chambers. The reasonable inlet and outlet layout and connecting pipe design ensure smooth water circulation and efficient filtration, significantly improving the purification efficiency and water quality stability of the wastewater treatment.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a wastewater treatment device for circuit board ink production. Background Technology

[0002] In the production of printed circuit boards (PCBs), inks are used extremely frequently, generating large amounts of wastewater containing pigments, resins, and organic solvents during cleaning, printing, and waste disposal. To prevent direct discharge of this wastewater and its potential environmental pollution, it typically undergoes multi-stage treatment processes, including coarse filtration, flocculation sedimentation, and filtration, to remove suspended solids and organic matter. Existing wastewater treatment systems are mostly fixed structures, with each treatment unit connected by pipelines. Water pumps and control systems are used to control water flow, enabling continuous treatment and water recovery.

[0003] However, existing circuit board ink wastewater treatment devices still have shortcomings in terms of structural design and functional integration. On the one hand, most coarse filtration and filter devices cannot be quickly disassembled, which is not conducive to daily cleaning and replacement; on the other hand, the treatment process lacks effective monitoring and automatic control mechanisms, resulting in limited treatment effects. In addition, some devices lack reliable sealing and support structures, which can easily cause liquid leakage or filter media displacement; the sludge-water separation in the sedimentation stage is incomplete, making cleaning cumbersome and affecting operating efficiency. These problems, to some extent, reduce the reliability and ease of maintenance of the wastewater treatment system. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wastewater treatment device for circuit board ink production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wastewater treatment device for circuit board ink production includes a base plate with a mounting bracket fixedly connected to the top of the base plate. A controller is bolted to the mounting bracket. A coarse filter chamber has a first inlet and a first outlet, arranged at different heights, with a coarse filter screen detachably installed between them. A flocculation reaction chamber contains an agitator, whose connecting shaft is connected to a motor via a coupling. The side wall of the flocculation reaction chamber has a second inlet and a second outlet. A sedimentation chamber has a funnel-shaped bottom and a third inlet, an overflow outlet, and a sludge discharge outlet, with a valve installed at the sludge discharge outlet. A multi-stage filtration chamber has a fourth inlet on its side wall. The system includes a fourth drain outlet at the bottom, and three detachable filter media boxes located between the fourth inlet and the fourth drain outlet. A circulating water tank has a fifth inlet at the top and a fifth drain outlet at the bottom, connected to the water pump inlet. The water pump drain outlet is connected to a drain pipe and a return pipe via a T-junction. The end of the return pipe is connected to the flocculation reaction tank via a return port located on the side wall of the flocculation reaction tank. Several connecting pipes are used to connect: the first drain outlet to the second inlet, the second drain outlet to the third inlet, the overflow outlet to the fourth inlet, and the fourth drain outlet to the fifth inlet.

[0007] Preferably, the tops of the coarse filter chamber, flocculation reaction chamber, sedimentation chamber, multi-stage filtration chamber, and circulating water tank are all open, and the tops of the coarse filter chamber, flocculation reaction chamber, sedimentation chamber, multi-stage filtration chamber, and circulating water tank are all hinged with top covers, with the fifth inlet located on the top cover of the circulating water tank.

[0008] Preferably, the motor is located above the flocculation reaction chamber. The coarse filter chamber, flocculation reaction chamber, sedimentation chamber, multi-stage filter chamber, and motor sidewall are all welded with connecting flanges and fixedly mounted on the mounting bracket by bolts. The second water inlet is located below the first drain outlet, the third water inlet is located below the second drain outlet, and the fourth water inlet is located below the overflow outlet. The circulating water tank is placed on the base plate and located directly below the multi-stage filter chamber. A sludge bucket is also placed on the base plate and located directly below the sludge discharge outlet. The water pump is fixedly mounted on the base plate by bolts.

[0009] Preferably, an insertion hole is provided on the top cover of the circulating water tank, and a turbidity sensor is inserted into the insertion hole. Solenoid valves are installed on the connecting pipes connecting the first drain outlet and the second inlet outlet, the connecting pipes connecting the second drain outlet and the third inlet outlet, the drain pipe, and the return pipe. Each solenoid valve, motor, water pump, and turbidity sensor is electrically connected to the controller.

[0010] Preferably, the coarse filter screen is surrounded by a frame, which is located inside the coarse filter chamber. First support strips are attached to the bottom of both sides of the frame, and the two first support strips are fixedly connected to the inner walls of both sides of the coarse filter chamber. A first baffle is fixedly connected to one side of the frame, which movably passes through the side wall of the coarse filter chamber. The first baffle is attached to the outer wall of the coarse filter chamber, and a first sealing ring is fitted between the first baffle and the coarse filter chamber. PP cotton filter screen, granular activated carbon, and quartz sand or ceramic membrane layer are placed sequentially from top to bottom in the three filter media boxes. The filter media boxes have a mesh-like bottom structure and are located inside the multi-stage filtration chamber. Third support strips are attached to the bottom of both sides of the filter media boxes, and the two third support strips are fixedly connected to the inner walls of both sides of the multi-stage filtration chamber. One end of the filter media box movably passes through the side wall of the multi-stage filtration chamber and is fixedly connected to a second baffle. The second baffle is attached to the outer wall of the multi-stage filtration chamber, and a second sealing ring is fitted between the second baffle and the multi-stage filtration chamber.

[0011] Preferably, a first observation window is provided on the side wall of the flocculation reaction chamber, and the first observation window is sealed with transparent acrylic or glass. A liquid level scale is affixed to the inner wall of the flocculation reaction chamber, and the liquid level scale is directly opposite the first observation window.

[0012] Preferably, a guide plate is inclinedly installed inside the sedimentation tank. The guide plate is located below the third inlet and is attached to the inner wall of the sedimentation tank on all four sides. Several drainage holes are opened on the guide plate. An elongated hole is opened at one end of the guide plate near the bottom of the sedimentation tank. Second support strips are attached to the bottom of both ends of the guide plate. Both second support strips are fixedly connected to the inner wall of the sedimentation tank. A handle is fixedly connected to the top of one end of the guide plate. A second observation window is opened on the side wall of the sedimentation tank near the bottom. The second observation window is sealed with transparent acrylic or glass. A filter screen is installed at the overflow port. The filter screen is located inside the sedimentation tank and its outer diameter is larger than that of the third inlet. A plug-in ring is fixedly connected to the side of the filter screen near the overflow port. The outer wall of the plug-in ring is attached to the inner wall of the overflow port.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model, by setting up a detachable filter assembly and an easily replaceable filter screen structure, achieves rapid disassembly and cleaning of the filter unit, significantly improving the maintenance efficiency of the wastewater treatment device. Compared with traditional integrated filter devices, when the filter element is clogged or needs replacement, this utility model allows for simple removal and replacement of the filter screen and filter media, avoiding prolonged downtime caused by complex disassembly, enhancing the continuous operation and practicality of the equipment, and making it suitable for industrial sites with high-frequency cleaning and replacement requirements.

[0015] 2. This device effectively removes suspended solids, flocculants, and impurities from water through a multi-stage treatment process including a coarse filtration chamber, a flocculation reaction chamber, a sedimentation chamber, and multiple filtration chambers. The rational layout of the inlet and outlet ports and the design of the connecting pipes ensure smooth water circulation and efficient filtration, significantly improving the purification efficiency and water quality stability of wastewater treatment. The inclined guide plates and matching filter screens in the sedimentation chamber optimize water flow guidance and particle settling, effectively reducing water disturbance, promoting sedimentation, and improving the mud-water separation effect. Simultaneously, the bottom of the sedimentation chamber is equipped with a sludge discharge port and a sludge bucket, facilitating regular discharge and cleaning of sediment, reducing maintenance difficulty, and improving the practicality and reliability of the equipment.

[0016] 3. This utility model adopts a modular design concept, integrating the pretreatment unit, filtration unit, and sedimentation unit into a detachable frame. The components are fixed together using standard connectors, facilitating transportation, installation, and subsequent maintenance. Equipped with a turbidity sensor and multiple solenoid valves, it achieves automated monitoring and control through electrical linkage with the controller. The turbidity sensor detects water turbidity in real time, controlling the opening and closing of the solenoid valves to adjust the water flow path, improving the system's intelligence level, reducing the frequency of manual intervention, ensuring stable and efficient treatment, and enhancing the equipment's ease of operation and safety. Attached Figure Description

[0017] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0018] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the coarse filter chamber of this utility model;

[0020] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 5 This is a schematic diagram of the coarse filter screen structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the flocculation reaction chamber structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the sedimentation tank structure of this utility model;

[0024] Figure 8 This is a schematic cross-sectional view of the sedimentation tank of this utility model;

[0025] Figure 9 For the present utility model Figure 8 Enlarged schematic diagram of the structure at point B;

[0026] Figure 10 This is a schematic diagram of the filter structure of this utility model;

[0027] Figure 11 This is a schematic diagram of the cross-sectional structure of the multi-stage filter chamber of this utility model;

[0028] Figure 12 This is a schematic diagram of the filter media box structure of this utility model;

[0029] Figure 13 This is a schematic diagram of the circulating water tank and turbidity sensor of this utility model.

[0030] In the diagram: 1. Base plate; 2. Mounting bracket; 3. Coarse filter chamber; 301. First inlet; 302. First outlet; 303. Coarse filter screen; 304. Frame; 305. First baffle; 306. First sealing ring; 307. First support bar; 4. Flocculation reaction tank; 401. Agitator; 402. Second inlet; 403. Second outlet; 404. First observation window; 405. Connecting shaft; 406. Coupling; 407. Motor; 408. Liquid level scale; 5. Sedimentation chamber; 501. Third inlet; 502. Overflow outlet; 503. Sludge discharge outlet; 503a. Valve; 504. Guide plate; 505. Leakage hole; 506. 507. Long hole; 508. Second support bar; 509. Handle; 510. Second observation window; 511. Filter screen; 512. Insertion ring; 6. Multi-stage filter chamber; 601. Fourth inlet; 602. Fourth outlet; 603. Filter media box; 604. Second baffle; 605. Second sealing ring; 606. Third support bar; 7. Circulating water tank; 701. Fifth inlet; 702. Fifth outlet; 703. Insertion hole; 8. Water pump; 801. Drain pipe; 802. Return pipe; 9. Turbidity sensor; 10. Connecting pipe; 11. Controller; 12. Sludge bucket; 13. Connecting flange; 14. Solenoid valve; 15. Top cover; 16. T-connector. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Reference Figure 1-13A wastewater treatment device for circuit board ink production includes a base plate 1, with a mounting bracket 2 fixedly connected to the top of the base plate 1, and a controller 11 fixedly mounted on the mounting bracket 2 by bolts; a coarse filter chamber 3, which has a first inlet 301 and a first outlet 302, arranged at different heights, with a coarse filter screen 303 detachably installed between them; a flocculation reaction chamber 4, which has an agitator 401 inside, and the connecting shaft 405 of the agitator 401 is connected to a motor 407 via a coupling 406, and the side wall of the flocculation reaction chamber 4 has a second inlet 402 and a second outlet 403; a sedimentation chamber 5, which has a funnel-shaped bottom structure, and has a third inlet 501, an overflow 502, and a sludge discharge port 503, with a valve 503a installed at the sludge discharge port; and a multi-stage filtration chamber 6, which has a fourth inlet 601 on its side wall and a third inlet 602 on its bottom. The multi-stage filtration chamber 6 has four drainage outlets 602 and three filter media boxes 603 that can be detachably installed inside. The three filter media boxes 603 are located between the fourth inlet 601 and the fourth drainage outlet 602. The circulating water tank 7 has a fifth inlet 701 at the top and a fifth drainage outlet 702 at the bottom. The fifth drainage outlet 702 is connected to the inlet of the water pump 8. The drainage outlet of the water pump 8 is connected to the drainage pipe 801 and the return pipe 802 through a three-way pipe 16. The end of the return pipe 802 is connected to the flocculation reaction tank 4 through a return port 409. The return port 409 is opened on the side wall of the flocculation reaction tank 4. Several connecting pipes 10 are used to connect: the first drainage outlet 302 to the second inlet 402, the second drainage outlet 403 to the third inlet 501, the overflow outlet 502 to the fourth inlet 601, and the fourth drainage outlet 602 to the fifth inlet 701.

[0033] In this embodiment, the structure comprises a base plate 1, a mounting bracket 2, a controller 11, a coarse filter chamber 3, a flocculation reaction chamber 4, a sedimentation chamber 5, a multi-stage filtration chamber 6, a circulating water tank 7, a water pump 8, and several connecting pipes 10. The base plate 1 serves as the overall support foundation, and the mounting bracket 2 supports the controller 11, enabling unified control of the operating status of each unit by the electrical control system. The coarse filter chamber 3, with a first inlet 301, a first outlet 302, and a detachable coarse filter screen 303, achieves preliminary removal of large particulate impurities in the wastewater. The flocculation reaction chamber 4 introduces pretreated wastewater through a second inlet 402, and the internal stirring paddle 401 is driven by a motor 407 via a coupling 406. The reaction process allows the reagent to fully react with water and flow out from the second drain outlet 403. The sedimentation tank 5 adopts a funnel-shaped structure and is equipped with a third inlet 501, an overflow outlet 502, and a sludge discharge outlet 503 with a valve 503a, which can realize the gravity sedimentation of the particles after the reaction and the periodic sludge discharge. The multi-stage filtration tank 6 is equipped with a fourth inlet 601 and a fourth drain outlet 602, and three detachable filter media boxes 603 are arranged in sequence inside to realize the graded fine filtration of wastewater. The circulating water tank 7 is equipped with a fifth inlet 701 and a fifth drain outlet 702. Water is drawn in by the water pump 8 and the treated water is returned to the system or discharged through the three-way pipe 16. Several connecting pipes 10 ensure the connection between each treatment unit.

[0034] In this utility model, the tops of the coarse filter chamber 3, the flocculation reaction chamber 4, the sedimentation chamber 5, the multi-stage filtration chamber 6, and the circulating water tank 7 are all open-top designs, and the tops of the coarse filter chamber 3, the flocculation reaction chamber 4, the sedimentation chamber 5, the multi-stage filtration chamber 6, and the circulating water tank 7 are all hinged with top covers 15, and the fifth water inlet 701 is located on the top cover 15 of the circulating water tank 7.

[0035] In this embodiment, the tops of the coarse filter chamber 3, flocculation reaction chamber 4, sedimentation chamber 5, multi-stage filtration chamber 6, and circulating water tank 7 are all designed with open tops, which facilitates the user's addition of chemicals, observation, and maintenance of each treatment unit, improving the system's convenience and user-friendliness. Each unit is hinged with a top cover 15, which can cover the open top when needed, effectively preventing dust and impurities from falling in and odors from leaking out, ensuring the hygiene and environmental protection of the treatment process, while also facilitating daily inspection and maintenance.

[0036] In this utility model, the motor 407 is located above the flocculation reaction chamber 4. The coarse filter chamber 3, the flocculation reaction chamber 4, the sedimentation chamber 5, the multi-stage filter chamber 6, and the side wall of the motor 407 are all welded with connecting flanges 13 and are fixedly installed on the mounting bracket 2 by bolts. The second water inlet 402 is located below the first drain outlet 302, the third water inlet 501 is located below the second drain outlet 403, and the fourth water inlet 601 is located below the overflow outlet 502. The circulating water tank 7 is placed on the base plate 1 and located directly below the multi-stage filter chamber 6. A sludge bucket 12 is also placed on the base plate 1 and is located directly below the sludge discharge outlet 503. The water pump 8 is fixedly installed on the base plate 1 by bolts.

[0037] In this embodiment, the coarse filter chamber 3, flocculation reaction chamber 4, sedimentation chamber 5, multi-stage filter chamber 6, and motor 407 are all welded with connecting flanges 13, and each component is firmly installed on the mounting bracket 2 with bolts to ensure the stability of the device structure and facilitate disassembly and maintenance. The high-low arrangement of the second water inlet 402 below the first drain outlet 302, the third water inlet 501 below the second drain outlet 403, and the fourth water inlet 601 below the overflow outlet 502 utilizes gravity to achieve natural water flow, reducing energy consumption and simplifying pipeline design. The circulating water tank 7 is placed on the base plate 1 and is located directly below the multi-stage filter chamber 6, which facilitates the direct flow of filtered water into the tank and reduces intermediate flow paths. The base plate 1 is also equipped with a sludge bucket 12, which is directly opposite the sludge discharge outlet 503, which can conveniently collect sediment for subsequent cleaning and disposal.

[0038] In this utility model, a socket 703 is provided on the top cover 15 located on the top of the circulating water tank 7. A turbidity sensor 9 is inserted into the socket 703. Solenoid valves 14 are installed on the connecting pipe 10 connecting the first drain outlet 302 and the second water inlet 402, the connecting pipe 10 connecting the second drain outlet 403 and the third water inlet 501, the drain pipe 801, and the return pipe 802. Each solenoid valve 14, motor 407, water pump 8, and turbidity sensor 9 are electrically connected to the controller 11.

[0039] In this embodiment, an insertion hole 703 is provided on the top cover 15 of the circulating water tank 7. A turbidity sensor 9 is inserted into the insertion hole 703 to monitor the turbidity index of the water in real time, providing data support for subsequent water quality judgment and automatic control. Solenoid valves 14 are installed on the connecting pipes 10 that connect the first drain outlet 302 and the second inlet 402, the second drain outlet 403 and the third inlet 501, the drain pipe 801 and the return pipe 802. Solenoid valves 14 can realize the interruption and switching of water flow and path according to the control signal, thereby improving the flexibility and intelligence of the system operation. Solenoid valves 14, motor 407, water pump 8 and turbidity sensor 9 are all electrically connected to controller 11. When the turbidity sensor 9 detects that the turbidity in the circulating water exceeds the set threshold, it sends a detection signal to the controller 11. The controller 11 automatically determines whether the current water quality needs to be treated again or the treatment process needs to be switched according to the set logic, and outputs a control signal to the corresponding solenoid valve 14. This enables the water quality to be selected to be discharged directly through the drain pipe 801 or returned to the flocculation reaction tank 4 through the return pipe 802 for further treatment. This linkage control realizes the purpose of intelligent judgment and automatic control of water flow path of the system, effectively improving the efficiency and quality of water treatment.

[0040] In this invention, a frame 304 surrounds the coarse filter screen 303, and the frame 304 is located inside the coarse filter chamber 3. First support strips 307 are attached to the bottom of both sides of the frame 304. The two first support strips 307 are fixedly connected to the inner walls of both sides of the coarse filter chamber 3. A first baffle 305 is fixedly connected to one of the side walls of the frame 304, which movably passes through the side wall of the coarse filter chamber 3. The first baffle 305 is attached to the outer wall of the coarse filter chamber 3, and a first sealing ring 306 is fitted between the first baffle 305 and the coarse filter chamber 3. PP cotton filter screens are placed in the three filter media boxes 603 from highest to lowest. The filter media box 603 is a box structure with a mesh bottom and is located inside the multi-stage filtration chamber 6. The bottom of both sides of the filter media box 603 is attached with a third support strip 606. The two third support strips 606 are fixedly connected to the inner walls of both sides of the multi-stage filtration chamber 6. One end of the filter media box 603 can be moved through the side wall of the multi-stage filtration chamber 6 and is fixedly connected to a second baffle 604. The second baffle 604 is attached to the outer wall of the multi-stage filtration chamber 6, and a second sealing ring 605 is installed between the second baffle 604 and the multi-stage filtration chamber 6.

[0041] In this embodiment, the coarse filter screen 303 is provided with a frame 304 around its perimeter. The first support strip 307 at the bottom of the frame 304 is used to stabilize it on the inner wall of the coarse filter chamber 3, ensuring that it is firmly installed and not easily moved. One end of the frame 304 passes through the side wall of the coarse filter chamber 3 and is fixedly connected to a first baffle 305. The first baffle 305 is attached to the outer wall of the coarse filter chamber 3. The first sealing ring 306 provided can effectively prevent water leakage at the side wall interface, which facilitates the detachable installation of the coarse filter screen 303 and enhances its sealing performance. The multi-stage filtration chamber 6 contains three filter media boxes 603. Each filter media box 603 has a bottom mesh structure, and PP cotton filter screen, granular activated carbon, and quartz sand or ceramic membrane layer are placed inside from top to bottom to achieve multi-stage filtration and improve filtration accuracy. The bottom two sides of the filter media box 603 are provided with a third support strip 606, which is fixed to the inner wall of the multi-stage filtration chamber 6 to ensure stable placement of the filter media box 603. One end of the support strip penetrates through the side wall of the multi-stage filtration chamber 6 and is fixedly connected to a second baffle 604. The second sealing ring 605 ensures a good seal at the side wall, effectively preventing water leakage. It also facilitates the pull-out replacement and maintenance of the filter media box 603. This structural design improves the stability, sealing and convenience of the overall filtration system.

[0042] In this utility model, a first observation window 404 is provided on the side wall of the flocculation reaction box 4. The first observation window 404 is sealed with transparent acrylic or glass. A liquid level scale 408 is attached to the inner wall of the flocculation reaction box 4, and the liquid level scale 408 is directly opposite the first observation window 404.

[0043] In this embodiment, the flocculation reaction tank 4 has a first observation window 404 on its side wall. This window is made of transparent acrylic or glass and is sealed, providing good visibility and corrosion resistance. This allows the operator to clearly observe the mixing, reaction, and water level within the tank without opening the tank during operation. A liquid level scale 408 is affixed to the inner wall of the flocculation reaction tank 4, positioned opposite the first observation window 404. This allows the operator to visually read the liquid level within the tank, aiding in determining whether the influent flow and the amount of reaction reagent added are appropriate. This helps to precisely control the reaction process, ensuring stable and reliable flocculation results and improving the operability and management efficiency of the equipment.

[0044] In this invention, a guide plate 504 is inclinedly arranged inside the sedimentation tank 5. The guide plate 504 is located below the third inlet 501 and is in contact with the inner wall of the sedimentation tank 5 on all four sides. Several drainage holes 505 are provided on the guide plate 504. An elongated hole 506 is provided at one end of the guide plate 504 near the bottom of the sedimentation tank 5. Second support strips 507 are attached to the bottom of both ends of the guide plate 504. Both second support strips 507 are fixedly connected to the inner wall of the sedimentation tank 5. A handle 508 is fixedly connected to the top of one end of 4. A second observation window 509 is provided on the side wall of the sedimentation tank 5 near the bottom. The second observation window 509 is sealed with transparent acrylic or glass. A filter screen 510 is provided at the overflow port 502. The filter screen 510 is located inside the sedimentation tank 5 and its outer diameter is larger than that of the third water inlet 501. A plug ring 511 is fixedly connected to the side of the filter screen 510 near the overflow port 502. The outer wall of the plug ring 511 is attached to the inner wall of the overflow port 502.

[0045] In this embodiment, the guide plate 504 is installed inside the sedimentation tank 5 and arranged at an angle, located below the third inlet 501. It forms an effective flow guiding structure by adhering to the inner wall of the sedimentation tank 5 on all four sides, which can buffer the impact of incoming water and guide the water flow slowly downwards, thereby promoting the stability of mud-water separation. The guide plate 504 is provided with a drainage hole 505 and an elongated hole 506 at the bottom, ensuring smooth water infiltration and facilitating the concentrated discharge of sediment. Its bottom is fixedly connected to the inner wall of the sedimentation tank 5 by a second support strip 507, improving the overall structural strength and durability. A handle 508 is provided at the top for convenient periodic removal and cleaning. A second observation window 509 is provided on the side wall near the bottom of the sedimentation tank 5, which is enclosed with transparent acrylic or glass, allowing for direct observation of the sedimentation effect and sludge deposition status from the outside. A filter screen 510 is installed inside the overflow port 502 to further intercept residual suspended impurities. The filter screen 510 is installed in close contact with the inner wall of the overflow port 502 through the insertion ring 511 to ensure that it can still filter firmly under high water level conditions, effectively improve the quality of the effluent, and ensure the stability and continuity of subsequent treatment processes.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wastewater treatment device for circuit board ink production, characterized in that, include: A base plate (1) is fixedly connected to the top of the base plate (1) and a mounting bracket (2) is fixedly installed on the mounting bracket (2) by bolts; The coarse filter chamber (3) is provided with a first inlet (301) and a first outlet (302), which are arranged at different heights and a coarse filter screen (303) can be detachably installed between them. The flocculation reaction tank (4) is equipped with a stirring paddle (401) inside. The connecting shaft (405) of the stirring paddle (401) is connected to the motor (407) through a coupling (406). The side wall of the flocculation reaction tank (4) is equipped with a second water inlet (402) and a second drain outlet (403). The sedimentation tank (5) has a funnel-shaped bottom and is provided with a third water inlet (501), an overflow outlet (502) and a sludge discharge outlet (503). The sludge discharge outlet is equipped with a valve (503a). A multi-stage filtration chamber (6) is provided with a fourth water inlet (601) on its side wall and a fourth drain outlet (602) at its bottom. Three filter media boxes (603) are detachably installed inside the multi-stage filtration chamber (6), and the three filter media boxes (603) are located between the fourth water inlet (601) and the fourth drain outlet (602). The circulating water tank (7) has a fifth inlet (701) at the top and a fifth outlet (702) at the bottom. The fifth outlet (702) is connected to the inlet of the water pump (8). The outlet of the water pump (8) is connected to the drain pipe (801) and the return pipe (802) through a three-way pipe (16). The end of the return pipe (802) is connected to the flocculation reaction tank (4) through a return port (409). The return port (409) is opened on the side wall of the flocculation reaction tank (4). A plurality of connecting pipes (10) are respectively used to connect: the first drain (302) to the second inlet (402), the second drain (403) to the third inlet (501), the overflow (502) to the fourth inlet (601), and the fourth drain (602) to the fifth inlet (701).

2. The wastewater treatment device for circuit board ink production according to claim 1, characterized in that, The tops of the coarse filter chamber (3), the flocculation reaction chamber (4), the sedimentation chamber (5), the multi-stage filtration chamber (6), and the circulating water tank (7) are all open-top designs, and the tops of the coarse filter chamber (3), the flocculation reaction chamber (4), the sedimentation chamber (5), the multi-stage filtration chamber (6), and the circulating water tank (7) are all hinged with top covers (15), and the fifth water inlet (701) is located on the top cover (15) of the circulating water tank (7).

3. The wastewater treatment device for circuit board ink production according to claim 1, characterized in that, The motor (407) is located above the flocculation reaction tank (4). The coarse filter chamber (3), the flocculation reaction tank (4), the sedimentation chamber (5), the multi-stage filter chamber (6) and the motor (407) are all welded with connecting flanges (13) and are fixedly installed on the mounting bracket (2) by bolts. The second water inlet (402) is located below the first drain outlet (302). The third water inlet (501) is located below the second drain outlet (403). The fourth water inlet (601) is located below the overflow outlet (502). The circulating water tank (7) is placed on the base plate (1) and located directly below the multi-stage filter chamber (6). A sludge bucket (12) is also placed on the base plate (1). The sludge bucket (12) is located directly below the sludge discharge outlet (503). The water pump (8) is fixedly installed on the base plate (1) by bolts.

4. The wastewater treatment device for circuit board ink production according to claim 2, characterized in that, An insertion hole (703) is provided on the top cover (15) at the top of the circulating water tank (7). A turbidity sensor (9) is inserted into the insertion hole (703). Solenoid valves (14) are installed on the connecting pipe (10) connecting the first drain (302) and the second water inlet (402), the connecting pipe (10) connecting the second drain (403) and the third water inlet (501), the drain pipe (801), and the return pipe (802). Each solenoid valve (14), the motor (407), the water pump (8), and the turbidity sensor (9) are electrically connected to the controller (11).

5. The wastewater treatment device for circuit board ink production according to claim 1, characterized in that, The coarse filter screen (303) is surrounded by a frame (304), which is located inside the coarse filter chamber (3). First support strips (307) are attached to the bottom of both sides of the frame (304). The two first support strips (307) are fixedly connected to the inner walls of both sides of the coarse filter chamber (3). A first baffle (305) is fixedly connected to one side wall of the frame (304), which extends through the side wall of the coarse filter chamber (3). The first baffle (305) is attached to the outer wall of the coarse filter chamber (3), and a first sealing ring (306) is fitted between the first baffle (305) and the coarse filter chamber (3). PP cotton filter screens are placed sequentially from high to low in the three filter media boxes (603). The filter media box (603) is a box structure with a mesh bottom. The filter media box (603) is located inside the multi-stage filtration chamber (6). The bottom of both sides of the filter media box (603) is attached with a third support strip (606). The two third support strips (606) are fixedly connected to the inner walls of both sides of the multi-stage filtration chamber (6). One end of the filter media box (603) movably penetrates the side wall of the multi-stage filtration chamber (6) and is fixedly connected with a second baffle (604). The second baffle (604) is attached to the outer wall of the multi-stage filtration chamber (6), and a second sealing ring (605) is installed between the second baffle (604) and the multi-stage filtration chamber (6).

6. The wastewater treatment device for circuit board ink production according to claim 1, characterized in that, The side wall of the flocculation reaction tank (4) is provided with a first observation window (404), which is sealed with transparent acrylic or glass. The inner wall of the flocculation reaction tank (4) is affixed with a liquid level scale (408), which is directly opposite the first observation window (404).

7. The wastewater treatment device for circuit board ink production according to claim 1, characterized in that, A guide plate (504) is inclinedly arranged inside the sedimentation tank (5). The guide plate (504) is located below the third inlet (501) and is in contact with the inner wall of the sedimentation tank (5) on all four sides. The guide plate (504) has several drainage holes (505). An elongated hole (506) is opened at one end of the guide plate (504) near the bottom of the sedimentation tank (5). Second support strips (507) are attached to the bottom of both ends of the guide plate (504). Both second support strips (507) are fixedly connected to the inner wall of the sedimentation tank (5). The guide plate (504) has... A handle (508) is fixedly connected to the top of one end. A second observation window (509) is provided on the side wall near the bottom of the sedimentation tank (5). The second observation window (509) is sealed with transparent acrylic or glass. A filter screen (510) is provided at the overflow port (502). The filter screen (510) is located inside the sedimentation tank (5) and its outer diameter is larger than that of the third water inlet (501). A plug ring (511) is fixedly connected to the side of the filter screen (510) near the overflow port (502). The outer wall of the plug ring (511) is attached to the inner wall of the overflow port (502).

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