Waste liquid separation treatment system for automobile coating production line

Abstract

The invention belongs to the technical field of waste liquid treatment, and discloses an automobile coating production line waste liquid separation treatment system which comprises a box body, a solid filtering assembly and an oil-water separation assembly, the solid filtering assembly and the oil-water separation assembly are sequentially arranged in the box body from top to bottom, and a separation box and an oil storage cavity are arranged in the box body; the oil-water separation assembly comprises a moving frame slidably arranged above the separation box and the oil storage cavity and a plurality of oleophylic and hydrophobic adsorption cotton fixed to the bottom of the moving frame, a grid plate is fixed to the position, located in the oil storage cavity, in the box body, two sliding seats are slidably connected to the two sides of the box body, sliding blocks are slidably connected to the interiors of the two sliding seats, and the sliding blocks are connected to the two sides of the box body. First connecting rods are rotationally connected between the top of the movable frame and one end of the sliding base and between the sliding blocks. Through horizontal movement and up-down movement of the moving frame, the adsorption cotton physically adsorbs upper-layer oily paint, so that complete separation of the oily paint and water-based paint is achieved, and the operation mode is simple and easy to achieve.

Description

Technical Field

[0001] This invention belongs to the field of waste liquid treatment technology, specifically relating to a waste liquid separation and treatment system for an automotive painting production line. Background Technology

[0002] During the automotive painting production line operation, some painting waste liquid is generated. This waste liquid contains solid impurities, oil-based paint, water-based paint and water. Waste liquid treatment requires separating solid impurities, oil-based paint and water-based paint to ensure that the waste liquid meets the emission standards.

[0003] Currently, the existing waste liquid separation and treatment equipment in automotive painting production lines first filters and separates solid impurities from the waste liquid. Then, taking advantage of the different densities of oil-based and water-based paints, the oil-based and water-based paints in the waste liquid are separated into layers. The oil-based paint on the upper layer is then extracted by suction, thus achieving initial separation of the oil-based and water-based paints. However, when the oil-based paint is being suctioned close to the water-based paint, because the amount of oil-based paint is relatively small at this time, it is easy to suck in the water-based paint along with it during the suction process. To avoid this situation, it is often necessary to precisely control the suction force and position of the suction end, which requires a high level of operator skill, is demanding, and is cumbersome to operate. Summary of the Invention

[0004] The purpose of this invention is to provide a waste liquid separation and treatment system for automotive painting production lines, so as to solve the problems of high requirements and complicated operation of existing waste liquid separation and treatment systems for automotive painting production lines.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A waste liquid separation and treatment system for an automotive painting production line includes a housing and a solid filter assembly and an oil-water separation assembly arranged sequentially from top to bottom within the housing. The housing contains a separation chamber and an oil storage chamber. A guide tube is fixed between the solid filter assembly and the separation chamber within the housing. A feed pipe is fixedly inserted through the top of the housing, and a drain pipe and an oil drain pipe are fixedly inserted through the sides of the housing, respectively. The drain pipe and the oil drain pipe are respectively connected to the separation chamber and the oil storage chamber. The oil-water separation assembly includes a movable frame slidably disposed above the separation tank and the oil storage chamber, and multiple oleophilic and hydrophobic absorbent cottons fixed to the bottom of the movable frame. A grid plate is fixed inside the oil storage chamber of the tank. Two sliding seats are slidably connected to both sides of the tank. A slider is slidably connected in each of the two sliding seats. A first connecting rod is rotatably connected between the top of the movable frame, one end of the sliding seat, and the slider.

[0006] Preferably, two vertical plates are fixedly installed on the top of the mobile frame, each of the two vertical plates is provided with a sliding groove, and a square block is slidably connected in each of the two sliding blocks, with the two square blocks respectively slidingly engaged in the two sliding grooves.

[0007] Preferably, an electric push rod is fixedly installed inside the slide block, and the telescopic end of the electric push rod is fixedly connected to the slide block.

[0008] Preferably, two lead screws are rotatably connected inside the housing, and the two lead screws are respectively screwed into and pass through two slides. The ends of the two lead screws are coaxially fixed with pulleys, and a belt is connected between the two pulleys for transmission.

[0009] Preferably, the multiple absorbent cottons are arranged in multiple columns, and the multiple absorbent cottons in adjacent columns are staggered.

[0010] Preferably, the solid filter assembly includes a filter frame slidably connected to the housing and a first filter screen fixed inside the filter frame.

[0011] Preferably, the top of the housing is rotatably provided with a rotating shaft, and a plurality of arc-shaped scrapers are fixed on the outside of the rotating shaft, with the bottom of the plurality of scrapers abutting against the top of the first filter screen.

[0012] Preferably, a solid waste bin is slidably connected to one side of the housing, the top of the solid waste bin is connected to the top of the first filter screen, and a second filter screen is fixedly installed at one end of the solid waste bin at an incline, with the top of the second filter screen abutting against the bottom of the filter frame.

[0013] Preferably, the housing is provided with slots on both sides, and two locking rods that slide in symmetrically with the two slots are slidably connected inside the filter frame. A handle is fixedly installed on one side of the filter frame, and two guide rods are fixedly installed on both sides of the handle. A slide is slidably connected between the two guide rods. A second connecting rod is rotatably connected between one side of the slide and the two locking rods. A pull plate is fixedly installed on the other side of the slide, and a spring is fixedly installed between the slide and the handle.

[0014] Preferably, one end of the lever is provided with a guide slope facing the middle of the box.

[0015] Compared with the prior art, the present invention has the following advantages: (1) The present invention is provided with a movable frame, absorbent cotton, slide seat, slider and first connecting rod. After the coating waste liquid passes through the solid filter assembly, it enters the separation box. After the oil-based coating and water-based coating form layers, the slide seat can drive the movable frame and absorbent cotton to move horizontally through the first connecting rod. The sliding of the slider in the slide seat can cause the two first connecting rods to push the movable frame and absorbent cotton to move up and down. In this way, the horizontal and vertical movement of the movable frame enables the oleophilic and hydrophobic absorbent cotton to quickly physically adsorb the upper layer of oil-based coating, thereby achieving complete separation of oil-based coating and water-based coating. The operation is simple and easy to implement.

[0016] (2) The present invention is provided with a grid plate. After the absorbent cotton absorbs the oily paint, the moving frame can be moved to the top of the oil storage chamber. The grid plate and the moving frame squeeze the absorbent cotton by raising and lowering the moving frame, thereby squeezing out the oily paint. This facilitates continuous work and improves work efficiency.

[0017] (3) The adsorption cotton of the present invention is arranged in multiple rows and alternately, so that even when the bottom part of the adsorption cotton extends into the water-based coating, the liquid on one side of the adsorption cotton can be prevented from overflowing into the oil storage chamber when the adsorption cotton moves in the separation box, thus ensuring the separation quality.

[0018] (4) The present invention is provided with a scraper and a solid waste bin. After the first filter screen filters the waste liquid, solid impurities are intercepted on the first filter screen. The rotating shaft drives the arc-shaped scraper to rotate, so that the arc-shaped scraper gradually scrapes the solid impurities to the outside and finally enters the solid waste bin, thereby cleaning the first filter screen, avoiding clogging and improving efficiency. In addition, the setting of the second filter screen can prevent a lot of liquid from accumulating in the solid waste bin and reduce the cleaning frequency.

[0019] (5) The present invention is provided with a locking rod, a locking slot, a slide and a spring. When the first filter screen needs to be replaced, the slide can be moved by pulling the pull plate while holding the handle, so that the two second connecting rods drive the two locking rods to retract into the filter frame, thereby disengaging the two locking rods from the two locking slots. Then the handle can be pulled to pull the filter frame and the first filter screen out of the box, thus facilitating the replacement operation. In addition, when installing the first filter screen, the filter frame is slid into the box, and then the spring force pushes the slide to move, so that the two second connecting rods push the two locking rods to re-extend into the locking slots to complete the installation of the first filter screen. The operation is simple and efficient. Attached Figure Description

[0020] Figure 1 This is a first perspective view of the present invention; Figure 2 This is a second perspective view of the present invention; Figure 3 This is a first sectional view of the present invention; Figure 4 This is a perspective view of the lead screw assembly of the present invention; Figure 5 This is a perspective view of the slide assembly of the present invention; Figure 6 This is a cross-sectional view of the slide assembly of the present invention; Figure 7 This is a perspective view of the filter frame assembly of the present invention; Figure 8 This is a second sectional view of the present invention; Figure 9 for Figure 8 Enlarged view of point A; In the diagram: 1-box body, 2-feed pipe, 3-solid waste bin, 4-oil drain pipe, 5-drain pipe, 6-belt, 7-pulley, 8-filter frame, 9-guide tube, 10-first filter screen, 11-scraper, 12-rotating shaft, 13-second filter screen, 14-lead screw, 15-slide seat, 16-vertical plate, 17-first connecting rod, 18-moving frame, 19-absorbent cotton, 20-grid plate, 21-oil storage chamber, 22-separation box, 23-slide groove, 24-square block, 25-slider, 26-electric push rod, 27-clamping rod, 28-handle, 29-clamping groove, 30-guide rod, 31-spring, 32-second connecting rod, 33-slide frame, 34-pull plate. Detailed Implementation

[0021] To further understand the content of this invention, a detailed description of the invention is provided in conjunction with the accompanying drawings and embodiments. The structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art, and are not intended to limit the implementation conditions of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effects and objectives of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention. It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein.

[0022] Please see Figures 1-9 As shown, the present invention provides the following technical solution: A waste liquid separation and treatment system for an automotive painting production line includes a housing 1 and a solid filter assembly and an oil-water separation assembly arranged sequentially from top to bottom within the housing 1. The housing 1 is provided with a separation tank 22 and an oil storage chamber 21. A guide tube 9 is fixed between the solid filter assembly and the separation tank 22 inside the housing 1. A feed pipe 2 is fixedly inserted through the top of the housing 1. A drain pipe 5 and an oil drain pipe 4 are fixedly inserted through the sides of the housing 1, respectively. The drain pipe 5 and the oil drain pipe 4 are respectively connected to the separation tank 22 and the oil storage chamber 21. The oil-water separation assembly includes a movable frame 18 that is slidably disposed above the separation box 22 and the oil storage chamber 21, and multiple oleophilic and hydrophobic absorbent cotton 19 fixed to the bottom of the movable frame 18. A grid plate 20 is fixed inside the oil storage chamber 21 in the box body 1. Two slide seats 15 are slidably connected to both sides of the box body 1. A slider 25 is slidably connected in both slide seats 15. A first connecting rod 17 is rotatably connected between the top of the movable frame 18 and one end of the slide seat 15 and the slider 25. Two vertical plates 16 are fixedly installed on the top of the mobile frame 18. Each of the two vertical plates 16 is provided with a sliding groove 23. A square block 24 is slidably connected in each of the two sliding blocks 15. The two square blocks 24 are slidably engaged in the two sliding grooves 23 respectively. An electric push rod 26 is fixedly installed inside the slide block 15, and the telescopic end of the electric push rod 26 is fixedly connected to the slide block 25. Inside the housing 1, there are two lead screws 14 rotatably connected. The two lead screws 14 are screwed into and pass through two slides 15 respectively. The ends of the two lead screws 14 are coaxially fixed with pulleys 7, and a belt 6 is connected between the two pulleys 7 for transmission.

[0023] Based on the above-disclosed structure, when separating and treating automotive painting waste liquid: The coating waste liquid is fed into the tank 1 through the feed pipe 2. The solid impurities in the coating waste liquid are trapped by the solid filter assembly. Oil-based and water-based paints pass through the solid filter assembly and flow into the separation tank 22 along the guide tube 9. Preferably, a vibration generator is provided at the bottom of the separation tank. Low-frequency, small-amplitude vibration can accelerate the separation of oil-based and water-based paints. Then, one of the lead screws 14 is driven to rotate, and through the belt drive between the two pulleys 7, the two lead screws 14 rotate synchronously, causing the two slides 15 to move to both sides of the separation tank 22. This, in turn, drives the moving frame 18 and multiple absorbent cottons 19 to move to the top of the separation tank 22 through the two first connecting rods 17. Then, the electric push rod is activated. 26. The telescopic end is retracted, causing the slider 25 to slide within the slide block 15. This causes the slider 25 to drive the end of the first connecting rod 17, which is rotatably connected, to approach the end of the other first connecting rod 17. Simultaneously, due to the cooperation of the square block 24 and the slide groove 23, the vertical plate 16 remains vertical, thus keeping the moving frame 18 horizontal. This causes the two sets of first connecting rods 17 to push the moving frame 18 downward, allowing multiple absorbent cotton 19 to extend into the separation box 22, thereby physically adsorbing the upper layer of oily paint. At the same time, the rotation of the screw 14 causes the slide block 15 to drive the moving frame 18 and multiple absorbent cotton 19 to move horizontally within the separation box 22, thus completely adsorbing the upper layer of oily paint. After the multiple absorbent cottons 19 have completely absorbed the upper layer of oily coating, the electric push rod 26 is activated to extend the telescopic end, causing the slider 25 to slide in the reverse direction within the slide block 15. This causes the two first connecting rods 17 to drive the moving frame 18 and the multiple absorbent cottons 19 to rise, ensuring that the bottoms of the multiple absorbent cottons 19 are completely above the separation box 22. Then, the rotation of the lead screw 14 causes the slide block 15 to move the moving frame 18 and the multiple absorbent cottons 19 to above the oil storage chamber 21. Finally, the electric push rod 26 is activated again to retract the telescopic end, causing the slider 25 to slide in the reverse direction within the slide block 15. The sliding mechanism 5 causes the two first connecting rods 17 to drive the moving frame 18 and multiple absorbent cotton 19 to descend. The moving frame 18 and the grid plate 20 squeeze the multiple absorbent cotton 19, causing the absorbent cotton 19 to absorb the oily paint and be squeezed out, passing through the mesh of the grid plate 20 and falling into the oil storage chamber 21. This separates the water-based paint and the oil-based paint into the separation box 22 and the oil storage chamber 21, respectively. Then, the water-based paint and the oil-based paint can be discharged through the drain pipe 5 and the oil drain pipe 4, respectively, thus completing the separation and treatment of automotive painting waste liquid.

[0024] Preferably, the multiple absorbent cotton 19s are arranged in multiple rows, and the multiple absorbent cotton 19s in adjacent rows are staggered. Based on this, even when the bottom part of the absorbent cotton 19 extends into the water-based coating, it can prevent the absorbent cotton 19 from pushing the water-based coating on one side to overflow into the oil storage chamber 21 when it moves in the separation box 22, thereby ensuring the separation quality.

[0025] Regarding the solid filter assembly described above, the following structure is preferred: The solid filter assembly includes a filter frame 8 slidably connected to the housing 1 and a first filter screen 10 fixed inside the filter frame 8; The top of the housing 1 is provided with a rotating shaft 12, and a plurality of arc-shaped scrapers 11 are fixed on the outside of the rotating shaft 12. The bottom of the plurality of scrapers 11 abuts against the top of the first filter screen 10. A solid waste bin 3 is slidably connected to one side of the housing 1. The top of the solid waste bin 3 is connected to the top of the first filter screen 10. A second filter screen 13 is fixedly installed at one end of the solid waste bin 3 at an angle. The top of the second filter screen 13 abuts against the bottom of the filter frame 8.

[0026] As can be seen from the above, when the coating waste liquid enters the box 1 through the feed pipe 2, the coating waste liquid flows onto the first filter screen 10. The first filter screen 10 intercepts solid impurities in the coating waste liquid. Oil-based and water-based paints fall through the first filter screen 10, causing solid impurities to remain on the top of the first filter screen 10. To prevent solid impurities from clogging the first filter screen 10, the rotating shaft 12 is driven to rotate during filtration, which in turn drives multiple scrapers 11 to rotate. The scrapers 11 scrape off the solid impurities on the surface of the first filter screen 10. At the same time, the scrapers 11 have an arc-shaped structure, and the solid impurities are scraped off through the convex side of the scrapers 11, so that the solid impurities are gradually transported to the outside. When the solid impurities move to the end of the scrapers 11, they slide along the inner wall of the box 1 and finally enter the solid waste box 3 through the connection between the top of the first filter screen 10 and the top of the solid waste box 3. This achieves the cleaning of the first filter screen 10, avoids clogging caused by solid impurities, and improves the separation efficiency.

[0027] In addition, the second filter screen 13, which is inclined at one end of the solid waste bin 3, can filter the coating waste liquid when it overflows into the solid waste bin 3, thus preventing the accumulation of too much liquid in the solid waste bin 3.

[0028] Furthermore, both sides of the housing 1 are provided with slots 29. The filter frame 8 is symmetrically slidably connected with two rods 27 that are slidably engaged with the two slots 29 respectively. A handle 28 is fixedly installed on one side of the filter frame 8. Two guide rods 30 are fixedly installed on both sides of the handle 28. A slide 33 is slidably connected between the two guide rods 30. A second connecting rod 32 is rotatably connected between one side of the slide 33 and the two rods 27. A pull plate 34 is fixedly installed on the other side of the slide 33. A spring 31 is fixedly installed between the slide 33 and the handle 28. Based on this, when replacing the first filter screen 10, first hold the handle 28 and the pull plate 34 at the same time, clench your fingers to move the pull plate 34 away from the filter frame 8, so that the slide 33 slides between the two guide rods 30. At the same time, the slide 33 and the handle 28 compress the spring 31, so that the slide 33 drives one end of the two second connecting rods 32 to move, so that the other end of the two second connecting rods 32 respectively drives the two locking rods 27 to retract into the filter frame 8, so that the ends of the two locking rods 27 respectively disengage from the two locking slots 29. At this time, pull the handle 28 to pull the filter frame 8 and the first filter screen 10 out of the box 1, and then the first filter screen 10 can be replaced. When the first filter 10 needs to be reinstalled after replacement, the filter frame 8 is slid into the housing 1. Preferably, one end of the locking rod 27 is provided with a guide slope facing the middle of the housing 1. The guide slope first touches the bottom of the outside of the housing 1, and then continues to push the filter frame 8 into the housing 1. The housing 1 pushes both locking rods 27 into the filter frame 8 through the guide slope, so that the two second connecting rods 32 push the slide 33 to move along the guide rod 30, so that the slide 33 and the handle 28 compress the spring 31 until the end of the locking rod 27 moves to one side of the slot 29. At this time, due to the elasticity of the spring 31, the slide 33 moves, so that the two second connecting rods 32 push the two locking rods 27 to slide into the slot 29 respectively, thereby confining the filter frame 8 in the housing 1, thus completing the installation of the filter frame 8 and the first filter 10. The operation is simple and efficient.

[0029] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A waste liquid separation and treatment system for an automotive painting production line, characterized in that: The device includes a housing (1) and a solid filter assembly and an oil-water separation assembly arranged sequentially from top to bottom inside the housing (1). The housing (1) is provided with a separation tank (22) and an oil storage chamber (21). A guide tube (9) is fixed between the solid filter assembly and the separation tank (22) inside the housing (1). A feed pipe (2) is fixed through the top of the housing (1). A drain pipe (5) and an oil drain pipe (4) are fixed through the sides of the housing (1) respectively. The drain pipe (5) and the oil drain pipe (4) are connected to the separation tank (22) and the oil storage chamber (21) respectively. The oil-water separation assembly includes a movable frame (18) slidably disposed above the separation box (22) and the oil storage chamber (21) and multiple oleophilic and hydrophobic absorbent cotton (19) fixed to the bottom of the movable frame (18). A grid plate (20) is fixed inside the oil storage chamber (21) of the box body (1). Two sliding seats (15) are slidably connected to both sides of the box body (1). A slider (25) is slidably connected inside each of the two sliding seats (15). A first connecting rod (17) is rotatably connected between the top of the movable frame (18), one end of the sliding seat (15), and the slider (25).

2. The waste liquid separation and treatment system for an automotive painting production line according to claim 1, characterized in that: The top of the mobile frame (18) is fixedly installed with two vertical plates (16), each of the two vertical plates (16) is provided with a sliding groove (23), and each of the two sliding blocks (15) is slidably connected with a square block (24), and the two square blocks (24) are respectively slidably engaged in the two sliding grooves (23).

3. The waste liquid separation and treatment system for an automotive painting production line according to claim 2, characterized in that: An electric push rod (26) is fixedly installed inside the slide block (15), and the telescopic end of the electric push rod (26) is fixedly connected to the slider (25).

4. The waste liquid separation and treatment system for an automotive painting production line according to claim 1, characterized in that: The housing (1) is rotatably connected to two lead screws (14), which are screwed into two slides (15) respectively. The ends of the two lead screws (14) are coaxially fixed with pulleys (7), and a belt (6) is connected between the two pulleys (7).

5. The waste liquid separation and treatment system for an automotive painting production line according to claim 1, characterized in that: Multiple absorbent cotton (19) are arranged in multiple columns, and multiple absorbent cotton (19) in adjacent columns are staggered.

6. The waste liquid separation and treatment system for an automotive painting production line according to claim 1, characterized in that: The solid filter assembly includes a filter frame (8) slidably connected to the housing (1) and a first filter screen (10) fixed inside the filter frame (8).

7. The waste liquid separation and treatment system for an automotive painting production line according to claim 6, characterized in that: The top of the housing (1) is provided with a rotating shaft (12), and a plurality of arc-shaped scrapers (11) are fixed on the outside of the rotating shaft (12). The bottom of the plurality of scrapers (11) abuts against the top of the first filter screen (10).

8. The waste liquid separation and treatment system for an automotive painting production line according to claim 7, characterized in that: A solid waste bin (3) is slidably connected to one side of the box (1). The top of the solid waste bin (3) is connected to the top of the first filter screen (10). A second filter screen (13) is installed at one end of the solid waste bin (3) at an angle. The top of the second filter screen (13) abuts against the bottom of the filter frame (8).

9. The waste liquid separation and treatment system for an automotive painting production line according to claim 6, characterized in that: The housing (1) has slots (29) on both sides. The filter frame (8) has two slidably connected rods (27) that are slidably engaged with the two slots (29). A handle (28) is fixedly installed on one side of the filter frame (8). Two guide rods (30) are fixedly installed on both sides of the handle (28). A slide (33) is slidably connected between the two guide rods (30). A second connecting rod (32) is rotatably connected between one side of the slide (33) and the two rods (27). A pull plate (34) is fixedly installed on the other side of the slide (33). A spring (31) is fixedly installed between the slide (33) and the handle (28).

10. The waste liquid separation and treatment system for an automotive painting production line according to claim 9, characterized in that: One end of the lever (27) is provided with a guide slope facing the middle of the box (1).

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