Recovery system of concentrated water in automobile factory painting workshop

Abstract

The application relates to a concentrated water recycling system for an automobile factory coating workshop, and relates to the technical field of industrial wastewater treatment, which comprises a pool body, a fixed support is fixedly connected inside the pool body, an inclined pipe is fixedly connected at the top of the fixed support, a plurality of triangular slopes are fixedly connected to the bottom wall inside the pool body, a plurality of blowdown pipes are fixedly connected to the pool body, a first valve is fixedly connected to the surface of the blowdown pipe, a filtered water tank is fixedly connected to the left side of the pool body, a primary grid is fixedly connected inside the filtered water tank, a secondary grid is arranged on the right side of the primary grid, a first circular hole is formed in the right wall inside the filtered water tank, a second circular hole is formed in the left wall inside the pool body, and a water inlet pipe is fixedly connected to the left side of the filtered water tank. The application has the effects of removing plastic fragments and metal scraps, avoiding blockage of the inclined pipe by large-particle impurities, and improving the sedimentation efficiency.

Description

Technical Field

[0001] This application relates to the field of industrial wastewater treatment technology, and in particular to a system for recycling concentrated wastewater from an automotive factory painting workshop. Background Technology

[0002] With the large-scale development of the automotive industry, painting workshops consume a large amount of water resources. The wastewater generated will form concentrated water after treatment. Most car factories directly discharge or simply treat this concentrated water before discharging it. Direct discharge will cause serious pollution to the environment and does not meet environmental protection standards. Although simple treatment can reduce pollution to a certain extent, the treatment effect is not good and the concentrated water is not utilized as a resource, resulting in the waste of water resources. To solve this problem, a concentrated water recycling system for automotive factory painting workshops has emerged.

[0003] The existing concentrated water recycling system in the painting workshop of automobile factories has a relatively simple structure, which is mostly composed of sedimentation tank, sand filter tank and activated carbon adsorption device. During operation, the concentrated water first enters the sedimentation tank, and by adding coagulants such as lime milk, heavy metals and some colloids are precipitated. The supernatant flows into the sand filter tank filled with quartz sand to filter out fine particles, and then passes through the activated carbon adsorption device to remove some organic matter and odor.

[0004] Regarding the aforementioned technologies, existing automotive factory painting workshop wastewater recycling systems lack pretreatment units, allowing plastic fragments and metal shavings in the wastewater to directly enter the sedimentation tank. This results in large particles of impurities clogging the inclined tubes, significantly reducing the filtration efficiency. Utility Model Content

[0005] The purpose of this application is to provide a system for recycling concentrated wastewater from an automotive factory painting workshop. This system aims to improve the existing technology where no pretreatment unit is installed, and plastic fragments and metal shavings in the concentrated wastewater directly enter the sedimentation tank, causing large particles of impurities to clog the inclined tubes and significantly reducing the filtration efficiency.

[0006] The recycling system for concentrated wastewater in an automotive factory painting workshop provided in this application adopts the following technical solution: The recycling system for concentrated wastewater in an automotive factory painting workshop includes a pool body. A fixed support is fixedly connected inside the pool body. An inclined pipe is fixedly connected to the top of the fixed support. Multiple triangular ramps are fixedly connected to the bottom wall inside the pool body. Multiple sewage pipes are fixedly connected inside the pool body. A first valve is fixedly connected to the surface of the sewage pipes. A filter water tank is fixedly connected to the left side of the pool body. A primary screen is fixedly connected inside the filter water tank. A secondary screen is set to the right of the primary screen. A first circular hole is opened on the right wall inside the filter water tank. A second circular hole is opened on the left wall inside the pool body. An inlet pipe is fixedly connected to the left side of the filter water tank.

[0007] By adopting the above technical solution, the coordinated design of the filter tank and the pool body first uses two-stage screens to pre-treat large particulate impurities, and then uses inclined tube sedimentation to further separate fine pollutants. The triangular slope and the sewage pipe work together to achieve directional discharge of impurities, forming a continuous treatment process of pre-treatment, sedimentation and sewage discharge, laying the foundation for subsequent purification and reuse.

[0008] Preferably, a water outlet pipe is fixedly connected to the rear wall inside the pool body. A fixing ring is fixedly connected to one end of the water outlet pipe. The fixing ring has multiple fixing grooves and abuts against a filter membrane. A ring-shaped threaded plate is threadedly connected to the surface of the water outlet pipe. A pressure plate is rotatably connected to the front side of the ring-shaped threaded plate. Multiple fixing rods are fixedly connected to the side of the pressure plate near the ring-shaped threaded plate. A collection box is fixedly connected to the other end of the water outlet pipe. Multiple water delivery pipes are fixedly connected to the side of the collection box away from the pool body. The surface of the water delivery pipes is fixedly connected to...

[0009] By adopting the above technical solution, the outlet pipe serves as a key channel connecting sedimentation and reuse. The filter membrane is stably installed through the cooperation of the fixing ring, fixing rod and pressing plate, ensuring that the colloid is effectively intercepted. The collection box and water delivery pipe enable centralized storage and branch delivery of purified water, meeting the reuse needs of multiple scenarios in the workshop and improving the efficiency of water resource recycling.

[0010] Preferably, the sewage pipe is located between the triangular slopes.

[0011] By adopting the above technical solution, this location design allows the sedimented impurities collected by the triangular slope to flow naturally into the sewage pipe, reducing the residue of impurities at the bottom of the pool, improving the thoroughness of sewage discharge, avoiding the accumulation of impurities that affects the sedimentation effect, and ensuring the long-term stable operation of the system.

[0012] Preferably, the first circular hole and the second circular hole are connected.

[0013] By adopting the above technical solution, the two holes are connected to form a smooth channel for the filtered concentrated water to enter the pool body from the filter tank.

[0014] Preferably, the secondary grille is fixedly connected inside the filter tank.

[0015] By adopting the above technical solution, the fixed connection can prevent the secondary screen from shifting or shaking under the impact of water flow, ensuring the stability of its filtration gap, continuously intercepting fine metal debris and plastic particles, and enhancing the pretreatment effect.

[0016] Preferably, a fixing rod is slidably connected inside the filter membrane, and a pressing plate abuts against the front side of the filter membrane.

[0017] By adopting the above technical solution, the sliding connection facilitates quick positioning during filter membrane installation, while the contact of the clamping plate eliminates the gap between the filter membrane and the fixing ring, thus achieving filter membrane fixation.

[0018] Preferably, the fixing rod is slidably connected inside the fixing groove.

[0019] By adopting the above technical solution, this matching method not only achieves precise docking between the fixing rod and the fixing ring, providing stable support for the filter membrane, but also facilitates disassembly and maintenance, reducing the operational difficulty of filter membrane replacement.

[0020] Preferably, the filter membrane is slidably connected inside the water outlet pipe, and the clamping plate abuts against the front end of the water outlet pipe.

[0021] By adopting the above technical solution, the sliding connection between the filter membrane and the water outlet pipe facilitates quick placement and removal, while the contact between the pressing plate and the front end of the water outlet pipe forms a sealing structure, thereby fixing the filter membrane.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Through two-stage interception by primary and secondary screens, plastic fragments and metal shavings can be removed, preventing large particles of impurities from clogging the inclined tube and improving sedimentation efficiency;

[0024] 2. The high efficiency of the filter membrane in retaining colloids ensures stable recycled water quality. The flow valve and pressure gauge are linked to adjust the delivery parameters according to the needs of the workshop's recycling points, achieving precise allocation of water resources. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the concentrated wastewater recycling system in the painting workshop of an automobile factory, according to an embodiment of this application.

[0026] Figure 2 This is a schematic diagram of a triangular ramp in the wastewater recycling system of an automobile factory painting workshop according to an embodiment of this application;

[0027] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the fixing rod of the concentrated water recycling system in the painting workshop of an automobile factory, according to an embodiment of this application;

[0029] Explanation of reference numerals in the attached drawings: 1. Pool body; 2. Inclined tube; 3. Triangular ramp; 4. Sewage pipe; 5. First valve; 6. Filter tank; 7. Primary screen; 8. Secondary screen; 9. First circular hole; 10. Second circular hole; 11. Inlet pipe; 12. Outlet pipe; 13. Collection box; 14. Fixing ring; 15. Fixing groove; 16. Filter membrane; 17. Annular threaded plate; 18. Pressure plate; 19. Fixing rod; 20. Water supply pipe; 21. Flow valve; 22. Pressure gauge; 23. Fixing bracket. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4 This application will be described in further detail below.

[0031] Example:

[0032] The system for recycling concentrated wastewater in the painting workshop of an automobile factory, referring to... Figures 1-3 The system includes a tank body 1, which serves as the core sedimentation space, providing sufficient residence time for the concentrated water to complete solid-liquid separation. A fixed support 23 is fixedly connected inside the tank body 1, and the support 23 is bolted to the tank wall, providing stable support for the inclined tube 2 and ensuring it maintains a preset tilt angle. The inclined tube 2 is fixedly connected to the top of the support 23. Multiple triangular ramps 3 are fixedly connected to the bottom wall inside the tank body 1, guiding the settled impurities to the bottom. Multiple drain pipes 4 are fixedly connected inside the tank body 1, providing a discharge channel for the settled impurities. A first valve 5 is fixedly connected to the surface of the drain pipe 4, controlling the opening and closing of the drain pipe 4 for periodic discharge of impurities. A filter tank 6 is fixedly connected to the left side of the tank body 1, serving as the core pretreatment area for preliminary purification of the concentrated water entering the system. A primary screen 7 is fixedly connected inside the filter tank 6. The filter employs a larger gap design to first intercept large plastic fragments, metal blocks, and other coarse impurities in the concentrated water. A secondary grid 8 is installed on the right side of the primary grid 7. The gap of the secondary grid 8 is smaller than that of the primary grid 7, which can further intercept smaller metal fragments and plastic particles, forming a two-stage filtration barrier. A first circular hole 9 is opened on the right wall inside the filter tank 6, and a second circular hole 10 is opened on the left wall inside the pool body 1. An inlet pipe 11 is fixedly connected to the left side of the filter tank 6, which introduces the concentrated water generated in the painting workshop into the system. The drain pipe 4 is located between the triangular ramps 3. This position design allows impurities collected on the triangular ramps 3 to enter the drain pipe 4 more easily, improving the sewage discharge efficiency. The first circular hole 9 and the second circular hole 10 are connected and aligned to form a channel for the filtered concentrated water to enter the pool body 1 from the filter tank 6, ensuring smooth water flow. The secondary grid 8 is fixedly connected inside the filter tank 6.

[0033] Reference Figure 1 , Figure 2 and Figure 4 A water outlet pipe 12 is fixedly connected to the rear wall inside the pool body 1. A fixing ring 14 is fixedly connected to one end of the water outlet pipe 12. The fixing ring 14 provides an installation reference for the filter membrane 16. The fixing ring 14 has multiple fixing grooves 15. The fixing ring 14 abuts against the filter membrane 16. The filter membrane 16 can trap colloids in the water, further improving the water purity. A ring threaded plate 17 is threadedly connected to the surface of the water outlet pipe 12. A pressure plate 18 is rotatably connected to the front side of the ring threaded plate 17. The ring threaded plate 17 can drive the pressure plate 18 to move by rotating, thus fixing the filter membrane 16. Multiple fixing rods 19 are fixedly connected to the side of the pressure plate 18 near the ring threaded plate 17. The fixing grooves 15 cooperate with the fixing rods 19. To achieve precise positioning of the filter membrane 16, a collection box 13 is fixedly connected to the other end of the water outlet pipe 12. The collection box 13 is used to temporarily store the water purified by the filter membrane 16. Multiple water supply pipes 20 are fixedly connected to the side of the collection box 13 away from the pool body 1. The water supply pipes 20 transport the purified water to different reuse points in the painting workshop to realize the recycling of water resources. The surface of the water supply pipes 20 is fixedly connected to a fixing rod 19 that is slidably connected inside the filter membrane 16. A pressing plate 18 abuts against the front side of the filter membrane 16. The fixing rod 19 is slidably connected inside the fixing groove 15. The filter membrane 16 is slidably connected inside the water outlet pipe 12. This connection method facilitates the disassembly and maintenance of the filter membrane 16. The pressing plate 18 abuts against the front end of the water outlet pipe 12.

[0034] The implementation principle of this application embodiment is as follows:

[0035] The concentrated water first flows into the filter tank 6, where it passes through the primary screen 7 and secondary screen 8 to intercept plastic fragments and metal shavings, completing the pretreatment. The pretreated water then enters the tank body 1, where inclined pipes 2 and triangular ramps 3 promote sedimentation. The settled impurities are discharged through the drain pipe 4, which is located between the triangular ramps 3. When the first valve 5 is opened, the settled impurities are discharged with the water flow from the drain pipe 4. Regular drainage is performed to prevent impurities from accumulating and affecting sedimentation. The clear water at the top of the sedimentation tank flows through the outlet pipe 12. The fixing groove 15 of the fixing ring 14 inside the outlet pipe 12 is fixed to the pressure plate 18. With the fixed rod 19 in place, the filter membrane 16 is installed inside the outlet pipe 12. The fixed rod 19 slides through the filter membrane 16 into the fixing groove 15. The annular threaded plate 17 is rotated, which drives the pressing plate 18 to move forward and press against the filter membrane 16 to achieve fixation. After the clean water passes through the filter membrane 16 to filter the colloid, it flows into the collection box 13. The collection box 13 is connected to the water supply pipe 20. With the help of the flow valve 21 and the pressure gauge 22, the purified concentrate is delivered to the workshop reuse point as needed. The pretreatment removes large particles to prevent clogging, the filter membrane 16 enhances purification, and the sewage pipe 4 ensures the stability of the sedimentation system, thus improving the recycling effect.

Claims

1. A system for recycling concentrated wastewater from an automotive factory painting workshop, comprising a tank (1), characterized in that: The pool body (1) is fixedly connected to a fixed bracket (23), and the top of the fixed bracket (23) is fixedly connected to an inclined tube (2). The bottom wall of the pool body (1) is fixedly connected to multiple triangular ramps (3). The pool body (1) is fixedly connected to multiple sewage pipes (4). The surface of the sewage pipes (4) is fixedly connected to a first valve (5). The left side of the pool body (1) is fixedly connected to a filter water tank (6). The filter water tank (6) is fixedly connected to a primary grid (7). The right side of the primary grid (7) is provided with a secondary grid (8). The right wall of the filter water tank (6) is provided with a first circular hole (9). The left wall of the pool body (1) is provided with a second circular hole (10). The left side of the filter water tank (6) is fixedly connected to a water inlet pipe (11).

2. The system for recycling concentrated wastewater in an automotive factory painting workshop according to claim 1, characterized in that, A water outlet pipe (12) is fixedly connected to the rear wall inside the pool body (1). A fixing ring (14) is fixedly connected to one end of the water outlet pipe (12). The fixing ring (14) has multiple fixing grooves (15). A filter membrane (16) is abutted against the fixing ring (14). A ring threaded plate (17) is threadedly connected to the surface of the water outlet pipe (12). A pressing plate (18) is rotatably connected to the front side of the ring threaded plate (17). Multiple fixing rods (19) are fixedly connected to the side of the pressing plate (18) close to the ring threaded plate (17). A collection box (13) is fixedly connected to the other end of the water outlet pipe (12). Multiple water supply pipes (20) are fixedly connected to the side of the collection box (13) away from the pool body (1). A flow valve (21) is fixedly connected to the surface of the water supply pipe (20). A pressure gauge (22) is fixedly connected to the surface of the water supply pipe (20).

3. The system for recycling concentrated wastewater in an automotive factory painting workshop according to claim 1, characterized in that, The sewage pipe (4) is located between the triangular slopes (3).

4. The system for recycling concentrated wastewater in an automotive factory painting workshop according to claim 1, characterized in that, The first circular hole (9) and the second circular hole (10) are connected.

5. The system for recycling concentrated wastewater in an automotive factory painting workshop according to claim 1, characterized in that, The secondary grille (8) is fixedly connected inside the filter tank (6).

6. The system for recycling concentrated wastewater in an automotive factory painting workshop according to claim 2, characterized in that, The filter membrane (16) is slidably connected to a fixing rod (19), and the front side of the filter membrane (16) is abutted against a pressing plate (18).

7. The system for recycling concentrated wastewater in an automotive factory painting workshop according to claim 6, characterized in that, The fixing rod (19) is slidably connected inside the fixing groove (15).

8. The system for recycling concentrated wastewater in an automotive factory painting workshop according to claim 7, characterized in that, The filter membrane (16) is slidably connected inside the water outlet pipe (12), and the clamping plate (18) abuts against the front end of the water outlet pipe (12).

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