Automobile painting wastewater treatment device

Abstract

The present application belongs to the technical field of coating wastewater treatment, and particularly relates to a kind of automobile coating wastewater treatment device.The present application device includes sedimentation tank and treatment pool;The inside of the sedimentation tank is fixedly connected with filter plate, the bottom of the filter plate is provided with a scraping assembly, the bottom of the side of the sedimentation tank is communicated with a water inlet, the bottom of the treatment pool is communicated with a water outlet, the treatment pool and the sedimentation tank are provided with a baffle, the bottom of the baffle and the bottom of the inner wall of the sedimentation tank are provided with a gap, one end of the filter plate is fixedly connected to the baffle.The device is provided with a scraping assembly, the scraping plate rotates and abuts against the bottom of the inner wall of the sedimentation tank, so that the scraping plate can scrape the sediments in the sedimentation tank into the collection box for centralized treatment.

Description

Technical Field

[0001] This invention belongs to the field of coating wastewater treatment technology, and particularly relates to an automotive coating wastewater treatment device. Background Technology

[0002] Automotive painting wastewater is primarily generated during the painting process in automobile production, which involves the use of large quantities of paint, solvents, and other chemicals. Automotive painting wastewater typically contains sediment, mainly uncured portions of the paint and coatings used during the painting process, as well as various particulate matter shed during the cleaning of vehicle parts before and after painting. In other words, during the painting process, some paint inevitably fails to adhere to the vehicle body; this uncured paint, along with some used cleaning agents and waste solvents, mixes with water to form wastewater. The particles and chemicals contained in these paints and solvents form suspended solids in the water.

[0003] To effectively separate suspended solids in automotive painting wastewater, existing technologies typically employ filtration. For example, Chinese utility model patent CN216005562U discloses a wastewater recovery device for electrophoretic coating. This device separates oily substances, particulate matter, and wastewater by stirring the wastewater with a stirrer. It then rapidly filters the wastewater using V-shaped baffles and quickly discharges the sludge remaining on the baffles through a drain pipe in the first tank, preventing excessive sludge from clogging the filter and affecting wastewater treatment efficiency. However, the above solution only filters a portion of the suspended solids through this blocking effect; the solid particles attached to the bottom of the tank cannot be removed by this blocking process.

[0004] In summary, there is a current need for an automotive painting wastewater treatment device that can simultaneously remove both suspended and settled particles from wastewater ponds. Summary of the Invention

[0005] The purpose of this invention is to provide a wastewater treatment device for automotive painting. Through the arrangement of a scraper assembly, the scraper plate rotates and abuts against the bottom of the inner wall of the sedimentation tank, allowing the scraper plate to scrape the sediment in the sedimentation tank into a collection box for centralized treatment as it moves.

[0006] The technical solution adopted by the present invention to solve the above problems is: an automotive painting wastewater treatment device, comprising:

[0007] A sedimentation tank and a treatment tank are provided. A filter plate is fixedly connected inside the sedimentation tank, and a scraping assembly is installed at the bottom of the filter plate. An inlet is connected to the bottom of the side of the sedimentation tank, and an outlet is connected to the bottom of the treatment tank. A baffle is installed between the treatment tank and the sedimentation tank, with a gap between the bottom of the baffle and the bottom of the inner wall of the sedimentation tank. One end of the filter plate is fixedly connected to the baffle. A scraping assembly for scraping away sediment is provided. The scraping assembly includes a scraping plate and a drive screw. A threaded block is threadedly connected to the surface of the drive screw, and the bottom of the threaded block is fixedly connected to... The system includes a connecting plate, with both ends of the bottom of the connecting plate rotatably connected to a scraper plate via rotating blocks. Both ends of the scraper plate are rotatably connected to a first guide rod, which is slidably positioned within an arc-shaped guide groove on the inner wall of the sedimentation tank. A collection box is placed at the bottom of the inner wall of the treatment tank, with fixed rods fixedly connected to both ends of the collection box. A connecting ring is sleeved on the surface of the fixed rod, and a transmission plate is sleeved on the surface of the fixed rod. One end of the transmission plate is rotatably connected to a second guide rod, which is slidably positioned within a tilting guide groove on the inner wall of the treatment tank.

[0008] In descriptions of sedimentation tanks and treatment tank structures, "bottom" typically refers to the lowest part of the tank, below the water level. This is the foundation of the tank and is usually designed with a slope to facilitate the concentration and removal of sediment. When it is stated that "the bottom of the side of the sedimentation tank is connected to an inlet," this means the inlet is located in the lower part of the side of the tank. This is a relative position; specifically, the inlet is not located at the top of the tank, nor exactly at the center of the bottom, but rather closer to the bottom on the side. This design is usually to optimize the flow pattern of water in the tank, reduce disturbance to the sediment at the bottom, and promote sedimentation.

[0009] A lead screw is a common mechanical transmission component used to convert rotary motion into linear motion. The lead screw has a helical thread that meshes with a corresponding threaded block. When the lead screw rotates, the threaded block moves along the axis of the lead screw due to the push of the thread on the lead screw. The threaded block is a matching part installed on the lead screw, with an internal thread that matches the lead screw's thread. When the lead screw rotates, the threaded block moves linearly along the lead screw because the internal thread of the threaded block engages with the external thread of the lead screw. The threaded block may be a simple nut or a more complex component.

[0010] A further preferred technical solution is that the collection box is arranged in a fan shape.

[0011] When describing the shape of a collection box or any container, the term "fan-shaped" indicates that the container's cross-sectional shape resembles a fan or a circular slice. Specifically, a fan is the shape formed by two radii from the center of a circle to the circumference and a portion of the circumference between these two radii. For instance, a collection box with a fan-shaped configuration means that the container appears as a fan in a side view, with an arc edge and two straight edges connecting the center.

[0012] A further preferred technical solution is that: limit plates are installed at both ends of the inner wall of the treatment pool, the connecting ring, the transmission plate and the second guide rod are located between the limit plates and the inner wall of the treatment pool, and the fixed rod is slidably arranged on the linear guide groove on the limit plate.

[0013] In mechanical design, "sliding arrangement" typically refers to a device or mechanism that allows one component to move in a controlled manner along a specific path of another component. A fixed rod sliding arrangement on a linear guide groove on a limit plate means that the fixed rod can slide linearly on the limit plate guided by the linear guide groove. Such an arrangement is commonly used to ensure linear movement of components, reduce wear, and improve the accuracy and stability of movement.

[0014] A further preferred technical solution is that: a pull rope is fixedly connected to the surface of the connecting ring, a take-up reel is fixedly connected to one end of the pull rope, a rotating shaft is fixedly connected to the center of the take-up reel, and a second servo motor is fixedly connected to one end of the rotating shaft.

[0015] In mechanical engineering and design, "axis center" typically refers to the location of the center or axis of a rotating component. A rotating shaft is fixedly connected to the axis center of the take-up reel. Here, "axis center" refers to the location of the reel's centerline or axis of rotation, usually its geometric center around which the reel can rotate. In other words, the fixed connection of a rotating shaft to the axis center of the take-up reel means that there is a shaft at the center of the reel that supports it and allows it to rotate, and this shaft is fixedly connected to the reel, ensuring that they function as a single rotating system.

[0016] A further preferred technical solution is that the bottom of the collection box is provided with filter holes spaced apart.

[0017] The term "spaced openings" is typically used to describe the process of creating a series of openings or holes at regular intervals on a surface or volume. The presence of equally spaced filter holes at the bottom of the collection tank describes a specific design feature of the tank's bottom. This means that at the bottom of the tank, there are many holes made to be the same size and spaced apart from each other. The purpose of these holes is to allow water to flow out but prevent solid matter from escaping from the collection tank.

[0018] A further preferred technical solution is that an arc-shaped groove for the collection box to rotate is provided on one side of the baffle.

[0019] The "arc-shaped groove" refers to an arc-shaped recess formed in the baffle, which allows the collection box to rotate or turn within it. This design is typically used to ensure that the collection box can move along a specific trajectory when rotating, while also providing stability and a rotation angle.

[0020] A further preferred technical solution is that a protective cover is installed on the top of the treatment pool, and a discharge port is opened at one end of the protective cover.

[0021] A protective cover is a covering or protective device used to cover or protect the top of a treatment tank for purposes such as providing a safety barrier and blocking odors. Protective covers may be made of various materials, such as metal, plastic, glass, or other synthetic materials, and their design provides varying levels of protection. A discharge port is an opening cut or formed in the protective cover for emptying waste from the tank. This opening is typically designed to be easy to empty and may be equipped with a cover, sliding door, or other mechanism to close the opening.

[0022] A further preferred technical solution is that: the two ends of the flipping guide groove are composed of straight guide grooves, the middle end of the flipping guide groove is composed of arc-shaped guide grooves, and the straight guide grooves located at the top are distributed on the inner wall of the treatment pool and the protective cover.

[0023] A further preferred technical solution is that: one end of the transmission screw is fixedly connected to a first servo motor, and one end of the first servo motor is mounted on the surface of the sedimentation tank through a mounting bracket.

[0024] Servo motors are a special type of electric motor capable of precisely controlling their output position, speed, and acceleration. Their key feature is their ability to control output actions with exceptional precision, ensuring that mechanical motion executes predetermined trajectories with high accuracy. They are components used to achieve automation and improve precision control performance.

[0025] A further preferred technical solution is that the arc-shaped guide groove is composed of a fan-shaped groove and a straight groove.

[0026] A sector groove is a recess shaped like a fan, similar in shape to a circular sector (part of a circle). The two sides of a sector groove are curved edges surrounding a common center, while the bottom can be straight or curved. Sector grooves allow connected components to rotate within a fixed central angle or move along a curved path. A straight groove, unlike a sector groove, is a straight recess. Its main characteristics are parallel sides and a straight bottom. Straight grooves are often used to guide components in linear motion or to position them along a straight path.

[0027] In summary, the present invention has the following advantages:

[0028] 1. The device of this application, through the setting of the scraping component and the setting of the arc-shaped guide groove, allows the scraping plate to rotate and abut against the bottom of the inner wall of the sedimentation tank when the transmission screw drives the scraping plate to move. This enables the scraping plate to scrape the sediment in the sedimentation tank into the collection box for centralized treatment, thereby improving the purification effect.

[0029] 2. The device of this application uses a fan-shaped arrangement of the collection box. When the collection box is pulled up by the rope, the second guide rod is driven up by the fixed rod. Under the limit of the flip guide groove, the collection box is rotated. The arc groove on the baffle makes the collection box stick tightly to the inner wall of the treatment tank when it rotates, which prevents the sediment from falling during transportation and improves the sediment treatment effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the treatment tank and sedimentation tank of the present invention;

[0032] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0033] Figure 4 This is a schematic diagram of the structure of the collection box, protective cover, and treatment pool of the present invention;

[0034] Figure 5 This is a schematic diagram of the scraping assembly of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the limiting plate, the inner wall of the treatment pool, and the baffle of the present invention;

[0036] Figure 7 This is a schematic diagram of the structure of the inner wall of the treatment pool, the collection box, and the limiting plate of the present invention.

[0037] In the attached diagram, the components represented by each number are as follows: 1. Sedimentation tank; 2. Treatment tank; 3. Filter plate; 4. Inlet; 5. Baffle; 6. Scraper; 7. Drive screw; 8. Threaded block; 9. First guide rod; 10. Collection box; 11. Fixing rod; 12. Connecting ring; 13. Drive plate; 14. Second guide rod; 15. Limiting plate; 16. Pull rope; 17. Take-up reel; 18. Protective cover. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0040] Example 1:

[0041] Please combine Figure 1-7 This embodiment of an automotive painting wastewater treatment device includes a sedimentation tank 1 and a treatment tank 2. A filter plate 3 is fixedly connected inside the sedimentation tank 1. A scraping assembly is provided at the bottom of the filter plate 3. An inlet 4 is connected to the bottom of the side of the sedimentation tank 1. An outlet is connected to the bottom of the treatment tank 2. Valves are provided at both the inlet 4 and the outlet. A baffle 5 is provided between the treatment tank 2 and the sedimentation tank 1. An arc-shaped groove for the collection box 10 to rotate is provided on one side of the baffle 5. When the collection box 10 rises and rotates, the edge of the collection box 10 can always be in close contact with the inner wall of the arc-shaped groove, preventing the sediment in the collection box 10 from falling out of the collection box 10 and improving the collection effect. A gap is provided between the bottom of the baffle 5 and the bottom of the inner wall of the sedimentation tank 1. The side of the baffle 5 is the sedimentation tank 1, and the other side of the baffle 5 is the treatment tank 2. One end of the filter plate 3 is fixedly connected to the baffle 5. A protective cover 18 is installed on the top of the treatment tank 2. A discharge port is provided at one end of the protective cover 18.

[0042] The scraping assembly for removing sediment includes a scraper plate 6 and a drive screw 7. The drive screw 7 is located in an installation groove in the middle of the filter plate 3. Both ends of the drive screw 7 are rotatably connected to the installation groove. One end of the drive screw 7 is fixedly connected to a first servo motor, and the other end of the first servo motor is mounted on the surface of the sedimentation tank 1 through a mounting bracket. A threaded block 8 is threadedly connected to the surface of the drive screw 7. A connecting plate is fixedly connected to the bottom of the threaded block 8. The width of the connecting plate is adapted to the width of the filter plate 3. When the connecting plate moves, it can remove sediment adhering to the bottom of the filter plate 3. For the removal of sediment, both ends of the bottom of the connecting plate are rotatably connected to the scraper plate 6 via rotating blocks. Both ends of the scraper plate 6 are rotatably connected to the first guide rod 9. The first guide rod 9 is slidably set in the arc-shaped guide groove on the inner wall of the sedimentation tank 1. The arc-shaped guide groove is composed of a fan-shaped groove and a straight groove. When the first guide rod 9 moves to the fan-shaped groove, the first guide rod 9 drives the scraper plate 6 to rotate through the limiting of the fan-shaped groove, so that the bottom of the scraper plate 6 can always abut against the inner wall of the sedimentation tank 1, so that the scraper plate 6 can scrape better and improve the removal effect of sediment.

[0043] A collection box 10 is placed at the bottom of the inner wall of the treatment tank 2. The collection box 10 is arranged in a fan shape, and its surface abuts against the inner wall of the treatment tank 2. Filter holes are evenly spaced at the bottom of the collection box 10. By using the filter holes on the collection box 10, the valve on the outlet is opened when the collection box 10 rises, allowing the purified wastewater to flow out from the outlet. Fixed rods 11 are fixedly connected to both ends of the collection box 10. Connecting rings 12 are fitted on the surface of the fixed rods 11, and pull ropes 1 are fixedly connected to the surface of the connecting rings 12. 6. One end of the pull rope 16 is fixedly connected to a take-up reel 17. A rotating shaft is fixedly connected to the axis of the take-up reel 17. A second servo motor is fixedly connected to one end of the rotating shaft. The second servo motor drives the rotating rod to rotate, thereby causing the take-up reel 17 to drive the pull rope 16 to wind up and pull up the collection box 10. Utilizing the linear guide groove on the limiting plate 15, the collection box 10 can rise in a straight line when it rises. At the same time, utilizing the second guide rod 14 and the flipping guide groove, the collection box 10 rotates. Using the baffle 5... The arc-shaped groove design on the upper part ensures that the collection box 10 fits tightly against the inner wall of the treatment tank 2 when rotating, preventing sediment from falling during transportation. When it moves to the highest point of the tilting guide groove, the sediment falls from the collection box 10 and is discharged from the outlet of the protective cover 18. A transmission plate 13 is sleeved on the surface of the fixed rod 11, and one end of the transmission plate 13 is rotatably connected to a second guide rod 14. The second guide rod 14 is slidably set in the tilting guide groove on the inner wall of the treatment tank 2. The two ends of the tilting guide groove are composed of straight guide grooves. The middle end of the guide groove is composed of an arc-shaped guide groove. The connection between the arc-shaped guide groove in the middle end and the straight guide grooves at both ends is set at an angle to prevent the second guide rod 14 from getting stuck in the flip guide groove when it moves. The straight guide grooves at the top are distributed on the inner walls of the treatment pool 2 and the protective cover 18. Limiting plates 15 are installed at both ends of the inner wall of the treatment pool 2. The connecting ring 12, the transmission plate 13 and the second guide rod 14 are located between the limiting plate 15 and the inner wall of the treatment pool 2. The fixing rod 11 is slidably set on the straight guide groove on the limiting plate 15.

[0044] The implementation principle of the automotive painting wastewater treatment device in this application embodiment is as follows: During use, wastewater is introduced through the inlet 4, the valve at the outlet is closed, and the device is allowed to stand. After the sediment in the wastewater settles, the first servo motor is started, causing the transmission screw 7 to rotate. This causes the transmission screw 7 to move the connecting plate. When the connecting plate moves the scraper 6, the scraper 6 rotates due to the first guide rod 9 and the arc-shaped guide groove. The scraper 6 rotates and abuts against the bottom of the inner wall of the sedimentation tank 1, allowing the scraper 6 to scrape the sediment from the sedimentation tank 1 into the collection box 10 for centralized treatment. The second servo motor is then started. The rotating rod drives the take-up reel 17 to wind up the pull rope 16, lifting the collection box 10. The linear guide groove on the limiting plate 15 ensures the collection box 10 rises linearly. Simultaneously, the second guide rod 14 and the tilting guide groove cause the collection box 10 to rotate. The arc-shaped groove on the baffle 5 ensures the collection box 10 remains in close contact with the inner wall of the treatment tank 2 during rotation, preventing sediment from falling during transport. When the collection box 10 reaches the highest point of the tilting guide groove, the opening at the top tilts towards the discharge port of the protective cover 18, allowing the sediment to fall from the collection box 10 and exit through the discharge port of the protective cover 18. After processing, the first and second servo motors are activated to reset the scraper plate 6 and the collection box 10 for cyclic processing. The filter holes on the collection box 10 open the valve at the outlet as it rises, allowing purified wastewater to flow out.

[0045] Furthermore, the same or similar element symbols are used as far as possible in the accompanying drawings and description to refer to the same or similar parts or steps. The drawings are presented in a simplified form and are not drawn to scale. For convenience and clarity only, directional terms such as top, bottom, left, right, upward, above, above, below, behind, and front may be used to refer to the drawings. These and similar directional terms should not be construed as limiting the scope of this disclosure in any way.

Claims

1. A device for treating automotive painting wastewater, characterized in that, It includes a sedimentation tank (1) and a treatment tank (2); a filter plate (3) is fixedly connected inside the sedimentation tank (1), a scraping assembly is provided at the bottom of the filter plate (3), an inlet (4) is connected to the bottom of the side of the sedimentation tank (1), an outlet is connected to the bottom of the treatment tank (2), a baffle (5) is provided between the treatment tank (2) and the sedimentation tank (1), a gap is provided between the bottom of the baffle (5) and the bottom of the inner wall of the sedimentation tank (1), and one end of the filter plate (3) is fixedly connected to the baffle (5); The scraping assembly includes a scraper (6) and a transmission screw (7). The surface of the transmission screw (7) is threaded with a threaded block (8). The bottom of the threaded block (8) is fixedly connected with a connecting plate. Both ends of the bottom of the connecting plate are rotatably connected to the scraper (6) through rotating blocks. Both ends of the scraper (6) are rotatably connected with a first guide rod (9). The first guide rod (9) is slidably disposed in an arc-shaped guide groove on the inner wall of the sedimentation tank (1). A collection box (10) is placed at the bottom of the inner wall of the treatment pool (2); Both ends of the collection box (10) are fixedly connected to a fixing rod (11). A connecting ring (12) is sleeved on the surface of the fixing rod (11). A transmission plate (13) is sleeved on the surface of the fixing rod (11). A second guide rod (14) is rotatably connected to one end of the transmission plate (13). The second guide rod (14) is slidably set in the flipping guide groove on the inner wall of the treatment pool (2). A pull rope (16) is fixedly connected to the surface of the connecting ring (12), a take-up reel (17) is fixedly connected to one end of the pull rope (16), a rotating shaft is fixedly connected to the center of the take-up reel (17), and a second servo motor is fixedly connected to one end of the rotating shaft. The baffle (5) has an arc-shaped groove on one side for the collection box (10) to rotate; The two ends of the flipping guide groove are composed of straight guide grooves, and the middle end of the flipping guide groove is composed of arc-shaped guide grooves.

2. The automotive painting wastewater treatment device according to claim 1, characterized in that, Limiting plates (15) are installed at both ends of the inner wall of the treatment pool (2). The connecting ring (12), transmission plate (13), and second guide rod (14) are located between the limiting plate (15) and the inner wall of the treatment pool (2). The fixing rod (11) is slidably arranged on the straight guide groove on the limiting plate (15).

3. The automotive painting wastewater treatment device according to claim 1, characterized in that, The bottom of the collection box (10) is provided with filter holes spaced apart.

4. The automotive painting wastewater treatment device according to claim 1, characterized in that, The top of the treatment pool (2) is equipped with a protective cover (18), and one end of the protective cover (18) has a discharge port.

5. The automotive painting wastewater treatment device according to claim 4, characterized in that, The upper linear guide channels are distributed on the inner walls of the treatment pool (2) and the protective cover (18).

6. The automotive painting wastewater treatment device according to claim 1, characterized in that, One end of the transmission screw (7) is fixedly connected to a first servo motor, and one end of the first servo motor is mounted on the surface of the sedimentation tank (1) through a mounting bracket.

7. The automotive painting wastewater treatment device according to claim 1, characterized in that, The arc-shaped guide groove is composed of a fan-shaped groove and a straight groove.

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