Air flotation oil removal device for treating compatibilizer wastewater for asphalt-based waterproof coiled material

Abstract

The invention relates to an air floatation oil removal device for treating compatibilizer wastewater for asphalt-based waterproof coiled materials, which comprises an air floatation tank, a water purification tank, a treatment tank, a communicating pipe, a filter piece and a fixing block, and the air floatation tank and the water purification tank are provided with pumping mechanisms. The fixed block is rotationally connected with a rotating shaft rotationally matched with the pressing rod, and the end part of the rotating shaft is fixedly connected with a movable plate matched with the filtering piece; the power part drives the communicating pipe, a filter plate movably penetrates through the communicating pipe, the power part is rotationally connected with the filter plate, the rotating direction of the filter plate is opposite to that of the filter part, and the filter part is driven by the power part to do circular motion around the communicating pipe to drive internal wastewater to shake. On one hand, the shaking promotes the wastewater to flow out more uniformly and quickly through the filtering holes of the filtering piece, and the filtering rate is increased; on the other hand, disturbance of the water flow can drive and loosen impurity particles in the filtering piece, and the impurity particles are prevented from being attached and accumulated at the filtering holes.

Description

Technical Field

[0001] This invention relates to the field of multi-stage treatment technology for wastewater from waterproof membrane production, specifically to an air flotation oil removal device for treating wastewater from compatibilizers used in asphalt-based waterproof membranes. Background Technology

[0002] The compatibilizers used in the production of bitumen-based waterproof membranes generate wastewater containing oil and solid particles, which requires effective treatment before discharge or reuse. Traditional air flotation oil removal devices often employ fixed or simple rotary filtration structures when treating this type of wastewater.

[0003] However, during the filtration process, suspended impurities tend to accumulate and cake on the surface of the filter media (such as filter screens), causing blockage of the filter pores and significantly reducing filtration efficiency and throughput. This problem is particularly prominent when treating high-viscosity wastewater containing fine particles and compatibilizers, which not only increases the frequency of equipment cleaning and downtime but also affects the continuity and stability of wastewater treatment.

[0004] Therefore, in response to the above problems, an air flotation oil removal device for wastewater treatment of compatibilizers for asphalt-based waterproof membranes is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an air flotation oil removal device for wastewater treatment of compatibilizers used in asphalt-based waterproof membranes.

[0006] The objective of this invention is achieved through the following technical solution: an air flotation oil removal device for treating wastewater containing compatibilizers for asphalt-based waterproof membranes, comprising an air flotation tank and a clean water tank equipped with a pumping mechanism, a treatment tank being provided between the air flotation tank and the clean water tank, and a connecting pipe rotatably connected to the conveying pipe of the pumping mechanism. A filter element with a hemispherical structure is fixedly connected to the top of the connecting pipe, and inclined pressing rods are pressed against the edge of the filter element. A fixing block is fixedly installed at the edge of the air flotation tank by an installation component, and a rotating shaft that rotatably cooperates with the pressing rods is rotatably connected to the fixing block. A movable plate that cooperates with the filter element is fixedly connected to the end of the rotating shaft; a power component driving the connecting pipe, through which the filter plate movably passes, the power component being rotatably connected to the filter plate, and the rotation directions of the filter plate and the filter element being opposite.

[0007] As a further description of the above technical solution: The pumping mechanism has a flow-through connecting cylinder at the end of its conveying pipe. The bottom of the flow-through connecting cylinder is fixedly connected to the flotation tank, and the top of the flow-through connecting cylinder is rotatably connected to the connecting pipe, ensuring that wastewater can be continuously and leak-free conveyed from the fixed conveying pipe to the rotating filter element.

[0008] As a further description of the above technical solution: The fixed block has a U-shaped structure. The middle of the pressing rod has a sliding groove that slides with the rotating shaft. The rotating shaft has a matching groove. There is a necessary sliding displacement between the pressing rod and the rotating shaft to adapt to the geometric position changes brought about by the circumferential movement of the filter element, so as to ensure smooth operation of the mechanism without jamming.

[0009] As a further description of the above technical solution: The end of the pressure rod is fixedly connected to a first limiting plate that slides with the inner wall of the filter element, and the middle of the first limiting plate is fixedly connected to a second limiting plate that presses against the edge of the filter element, further ensuring the pressing action between the pressure rod and the edge of the filter element.

[0010] As a further description of the above technical solution: The mounting component includes an L-shaped rod that is fixed to the fixed block. A rectangular plate is fixedly connected to the end of the L-shaped rod. An extension plate is fixedly connected to the top of the flotation tank. The extension plate has a first sliding groove and a second sliding groove that are interconnected. The L-shaped rod cooperates with the first sliding groove, and the rectangular plate is inserted into the second sliding groove. This allows for easy installation onto or removal from the flotation tank as a whole, greatly facilitating the assembly, maintenance, and cleaning of the equipment.

[0011] As a further description of the above technical solution: The top of the extension plate is fixedly connected to a base plate, and the base plate and the rectangular plate are connected by screws to facilitate the fixing of the extension plate and the rectangular plate.

[0012] As a further description of the above technical solution: The connecting pipe is located between the two movable plates, ensuring that the movable plates will not collide with the connecting pipe in the center when they are swinging back and forth to clean slag, thus guaranteeing the stability and safety of the mechanism.

[0013] As a further description of the above technical solution: The power component includes a motor fixedly connected to the outside of the flotation tank. The output shaft of the motor passes through the flotation tank and is fixedly connected to a rotating shaft. A first bevel gear is fixedly connected to the end of the rotating shaft. A second bevel gear is fixedly connected to the bottom of the connecting pipe. A third bevel gear is provided above the second bevel gear and is rotatably connected to the connecting pipe. The first bevel gear meshes with the second bevel gear and the third bevel gear respectively. The edge of the third bevel gear is fixedly connected to the filter plate through a connecting cylinder.

[0014] As a further description of the above technical solution: The air flotation tank is fixedly connected to a protective cylinder that movably penetrates the connecting pipe. A rotating shaft movably passes through the protective cylinder, and the top of the protective cylinder is rotatably connected to the connecting cylinder.

[0015] As a further description of the above technical solution: The filter plate is bent and the top edge of the protective cylinder is inclined to optimize water flow distribution and help with drainage and prevent siltation.

[0016] Compared with the prior art, the advantages of the present invention are as follows: This application utilizes a filter element that, driven by a power component, rotates around a connecting pipe in a circular motion, causing the wastewater inside to slosh. This sloshing promotes more even and rapid flow of wastewater through the filter element's pores, increasing the filtration rate. Furthermore, the disturbance of the water flow can loosen and dislodge impurities within the filter element, preventing them from adhering to and accumulating at the filter pores.

[0017] In conjunction with the circumferential motion of the filter element, a linkage mechanism consisting of a pressure rod, a rotating shaft, and a movable plate converts the displacement of the filter element's edge into a small-angle reciprocating oscillation of the movable plate inside the filter element. The movable plate moves back and forth within the filter element, directly scraping and agitating impurities that may accumulate near the filter pores, further preventing impurities from clogging the pores and thus ensuring long-term unobstructed flow and stable filtration efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cooperative structure of the flotation tank, pumping mechanism, and filter element of the present invention. Figure 2 This is a cross-sectional structural diagram of the air flotation tank of the present invention; Figure 3 This is a schematic diagram of the cooperation structure between the filter element, the filter plate, and the connecting pipe of the present invention; Figure 4 This is the present invention. Figure 3 Side view of the middle structure; Figure 5 This is a schematic diagram of the disassembled structure of the extension plate and the rectangular plate of the present invention; Figure 6 This is a cross-sectional structural diagram of the filter element and filter plate of the present invention; Figure 7 This is a schematic diagram showing the disassembled structure of the filter element and the connecting pipe of the present invention; Figure 8 This is a schematic diagram of the disassembled structure of the rotating shaft and the movable plate of the present invention; Figure 9 This is a schematic diagram of the cooperation structure between the rotating shaft and the pressing rod of the present invention; Figure 10 This is a schematic diagram of the cooperative structure of the communicating cylinder, the protective cylinder, and the filter plate of the present invention; Figure 11 This is a cross-sectional structural diagram of the communicating tube of the present invention; Figure 12 This is a schematic diagram of the disassembled structure of the protective cylinder of the present invention, which is far away from the connecting cylinder and the connecting pipe; Figure 13This is a schematic diagram of the split structure of the third bevel gear and the connecting pipe of the present invention.

[0019] Labeling Explanation: 1. Flotation Tank; 2. Pumping Mechanism; 3. Connecting Pipe; 4. Filter Component; 5. Pressing Rod; 6. Fixing Block; 7. Rotating Shaft; 8. Movable Plate; 9. Filter Plate; 10. Flow Connecting Cylinder; 11. Sliding Groove; 12. Mating Groove; 13. First Limiting Plate; 14. Second Limiting Plate; 15. L-shaped Rod; 16. Rectangular Plate; 17. Extension Plate; 18. First Sliding Groove; 19. Second Sliding Groove; 20. Base Plate; 21. Motor; 22. Rotating Shaft; 23. First Bevel Gear; 24. Second Bevel Gear; 25. Third Bevel Gear; 26. Connecting Cylinder; 27. Protective Cylinder. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figures 1-13 The diagram shows an embodiment of an air flotation oil removal device for treating wastewater containing compatibilizers for asphalt-based waterproof membranes provided by the present invention. It includes an air flotation tank 1 equipped with a pumping mechanism 2 and a purification tank. A treatment tank (not shown in the diagram, representing existing conventional technology) is located between the air flotation tank 1 and the purification tank. The device also includes a connecting pipe 3 rotatably connected to the delivery pipe of the pumping mechanism 2. The connecting pipe 3 is a rigid pipe, and a hemispherical filter element 4 is fixedly connected to the top of the connecting pipe 3. The filter element 4 is a cut hemispherical structure. The cut surface of the filter element 4 is inclined. The edge of the filter element 4 (i.e., the cut surface of the filter element 4) is fitted with inclined pressing rods 5. The edge of the flotation tank 1 is fixedly installed with a fixing block 6 by an installation component. The fixing block 6 is rotatably connected to a rotating shaft 7 that rotates with the pressing rods 5. The end of the rotating shaft 7 is fixedly connected to a movable plate 8 that cooperates with the filter element 4. A power component drives the connecting pipe 3. A filter plate 9 movably passes through the connecting pipe 3. The power component is rotatably connected to the filter plate 9. The rotation directions of the filter plate 9 and the filter element 4 are opposite.

[0021] The pumping mechanism 2 has a conveying pipe end connected to a flow-through connecting cylinder 10. The bottom of the flow-through connecting cylinder 10 is fixedly connected to the flotation tank 1, and the top of the flow-through connecting cylinder 10 is rotatably connected to the connecting pipe 3. The stationary conveying pipe and the rotating connecting pipe 3 are sealed and connected through a flow-through connecting cylinder 10 located between them.

[0022] It is worth noting that the fixing block 6 has a U-shaped structure, the middle of the pressing rod 5 has a sliding groove 11 that slides with the rotating shaft 7, the rotating shaft 7 has a mating groove 12, and the fixing block 6 is designed as a U-shaped structure to serve as a bearing seat.

[0023] The end of the pressing rod 5 is fixedly connected to a first limiting plate 13 that slides with the inner wall of the filter element 4. The middle part of the first limiting plate 13 is fixedly connected to a second limiting plate 14 that presses against the edge of the filter element 4. The first limiting plate 13 slides with the inner wall of the filter element 4, while the second limiting plate 14 presses against the edge (cut surface) of the filter element 4, thereby ensuring that the pressing rod 5 always cooperates with the filter element 4 and drives the pressing rod 5 to reciprocate in the vertical plane.

[0024] The mounting components include an L-shaped rod 15 that is fixedly connected to the fixing block 6. A rectangular plate 16 is fixedly connected to the end of the L-shaped rod 15. An extension plate 17 is fixedly connected to the top of the flotation tank 1. The extension plate 17 has a first sliding groove 18 and a second sliding groove 19 that are interconnected. The L-shaped rod 15 is engaged with the first sliding groove 18, and the rectangular plate 16 is inserted into the second sliding groove 19. A base plate 20 is fixedly connected to the top of the extension plate 17. The base plate 20 and the rectangular plate 16 are connected by screws. During installation, the L-shaped rod 15 first slides into the first sliding groove 18, then moves horizontally to insert the rectangular plate 16 into the second sliding groove 19, and finally the rectangular plate 16 is fixed to the base plate 20 with screws.

[0025] It is worth noting that the connecting pipe 3 is located between the two movable plates 8, so that the reciprocating movable plates 8 will not touch the connecting pipe 3 during the movement of the filter element 4, thus avoiding motion interference.

[0026] The power unit includes a motor 21 fixedly connected to the outside of the flotation tank 1. The output shaft of the motor 21 passes through the flotation tank 1 and is fixedly connected to a rotating shaft 22. A first bevel gear 23 is fixedly connected to the end of the rotating shaft 22. A second bevel gear 24 is fixedly connected to the bottom of the connecting pipe 3. A third bevel gear 25 is provided above the second bevel gear 24 and rotatably connected to the connecting pipe 3. The first bevel gear 23 meshes with the second bevel gear 24 and the third bevel gear 25 respectively. The edge of the third bevel gear 25 is connected and fixed to the filter plate 9 through a connecting cylinder 26. The first bevel gear 23 simultaneously meshes with the second bevel gear 24 connected to the connecting pipe 3 and the third bevel gear 25 which can rotate relative to the connecting pipe 3. The second bevel gear 24 and the third bevel gear 25 rotate in opposite directions. The third bevel gear 25 drives the filter plate 9 to rotate through the connecting cylinder 26.

[0027] A protective cylinder 27 is fixedly connected inside the flotation tank 1 and movably penetrates the connecting pipe 3. A rotating shaft 22 is movably inserted into the protective cylinder 27, and the top of the protective cylinder 27 is rotatably connected to the connecting cylinder 26.

[0028] Furthermore, the filter plate 9 is bent, and the top edge of the protective cylinder 27 is inclined. The bent shape of the filter plate 9 helps to receive and guide the wastewater falling from the filter element 4 above more evenly, and the inclined surface prevents wastewater from accumulating.

[0029] Regarding the wastewater treatment path: The asphalt-based waterproof membrane wastewater with compatibilizer is transported into the pumping mechanism 2. The wastewater first enters the stationary flow connecting cylinder 10, and then enters the rotating connecting pipe 3. The wastewater slowly emerges from the top of the connecting pipe 3 and then enters the spherical filter element 4. It enters the filter plate 9 through the filter holes of the filter element 4 for secondary filtration to remove impurities from the wastewater. The filtered wastewater enters the flotation tank 1, and then enters the treatment tank, where it is treated by neutralization with chemical agents. Finally, it enters the clean water tank. Electric / pneumatic actuators and matching butterfly valves are installed between the flotation tank 1, the treatment tank, and the clean water tank to achieve automatic control (a conventional connection method).

[0030] Working principle: First, the installation process: the middle part of the L-shaped rod 15 enters the first slide groove 18 and then enters the second slide groove 19. At this time, the rectangular plate 16, which is in a horizontal state, is located on one side of the extension plate 17 (the side away from the filter element 4). Then, it is moved horizontally so that the rectangular plate 16 is inserted into the second slide groove 19. During this process, the adjusting pressure rod 5 is rotated simultaneously so that the rotating shaft 7 slides with the sliding groove 11 on the pressure rod 5, thereby pressing the two first limiting plates 13 and the second limiting plate 14 against the edge cut surface of the filter element 4. Finally, the rectangular plate 16 and the base plate 20 are installed and fixed by screws, and both ends of the pressure rod 5 are always in contact with the edge of the filter element 4. Then, the filtration process is performed: the motor 21 is started, and the output shaft of the motor 21 drives the rotating shaft 22 to slowly rotate in its original position. That is, the rotating shaft 22 rotates in its original position on the fixed protective cylinder 27, thereby driving the first bevel gear 23 to rotate in its original position inside the protective cylinder 27. The corresponding second bevel gear 24 and third bevel gear 25 rotate slowly in their original positions inside the protective cylinder 27. The rotation directions of the second bevel gear 24 and the third bevel gear 25 are opposite. The second bevel gear 24 is fixedly connected to the outer wall of the connecting pipe 3, thereby driving the connecting pipe 3 to rotate in its original position, causing the filter element 4 fixed above the connecting pipe 3 to make a circular motion. The third bevel gear 25 has a through hole in the middle, and is rotatably connected to the connecting pipe 3 through the through hole. The third bevel gear 25 drives the connecting cylinder to rotate in its original position at the outer wall of the connecting pipe 3, thereby causing the filter plate 9 to rotate. In this application, the clockwise direction of the rotation of the filter plate 9 is opposite to the clockwise direction of the circular motion of the filter element 4, which helps to distribute impurities and avoid the accumulation of impurities in a fixed position, thereby causing the filter element 4 and the filter plate 9 to become blocked. It is worth noting that when the filter element 4 rotates in a circular motion around the connecting pipe 3, the inclination position of the cut surface of the filter element 4 changes, thereby pressing against the reaction pressing rod 5, while the position of the fixed block 6 remains unchanged. Under the restriction of the fixed block 6, the pressing element can only reciprocate at a small angle on a vertical plane under the action of the U-shaped fixed block 6, that is, the pressing rod 5 cannot deviate in the horizontal direction, so that the rotating shaft 7 reciprocates at a certain angle on the fixed block 6, thereby the movable plate 8 moves the impurities inside the filter element 4 and avoids the accumulation of impurities blocking the filter holes. In this way, through the cooperation of the mating groove 12 and the sliding groove 11, the rotation direction of the pressing rod 5 is the same as the rotation direction of the rotating shaft 7, and it does not affect the mutual sliding between the rotating shaft 7 and the pressing rod 5, thereby ensuring the position of the pressing rod 5, so that both ends of the pressing rod 5 are always located at the edge of the filter element 4, that is, the two first limiting plates 13 and the second limiting plates 14 are always pressed against the edge of the filter element 4, without affecting the sliding of the first limiting plates 13 and the second limiting plates 14 along the edge of the filter element 4; In this application, the diameter of the outermost part of the filter element 4 that makes a circular motion is smaller than the diameter of the filter plate 9, thereby ensuring that the wastewater filtered by the filter element 4 enters the filter plate 9 and does not fall outside the filter plate 9, and that the filter element 4 does not touch the extension plate 17. In this method, wastewater emerges from the top of the connecting pipe 3 and enters the filter element 4. During the circumferential movement of the filter element 4, the wastewater in the filter element 4 is shaken. On the one hand, this helps the wastewater to flow out from the filter holes of the filter element 4 and removes impurities. On the other hand, in conjunction with the further movement of the movable plate 8, it prevents the accumulation of impurities in the filter holes and ensures filtration efficiency. Furthermore, as the wastewater falls from the filter holes of the filter element 4, the filter element 4 moves in a circular motion relative to the filter plate 9, and the falling wastewater is evenly dispersed along the filter plate 9, thereby achieving further filtration and avoiding clogging of the filter plate 9, thus ensuring filtration efficiency. Finally, using the mounting hardware, remove the pressure rod 5, L-shaped rod 15, and filter element 4 (filter element 4 and connecting pipe 3 are detachable) to facilitate cleaning and collecting impurities from filter element 4.

Claims

1. An air flotation oil removal device for treating wastewater containing compatibilizers for bituminous waterproof membranes, comprising: An air flotation tank (1) equipped with a pumping mechanism (2) and a water purification tank, wherein a treatment tank is provided between the air flotation tank (1) and the water purification tank, characterized in that: It also includes a connecting pipe (3) that is rotatably connected to the conveying pipe of the pumping mechanism (2). A filter element (4) with a hemispherical structure is fixedly connected to the top of the connecting pipe (3). An inclined pressing rod (5) is pressed against the edge of the filter element (4). A fixing block (6) is fixedly installed at the edge of the flotation tank (1) by means of an installation component. A rotating shaft (7) that is rotatably connected to the fixing block (6) and rotates with the pressing rod (5). A movable plate (8) that cooperates with the filter element (4) is fixedly connected to the end of the rotating shaft (7). The power component drives the connecting pipe (3), through which a filter plate (9) is movably passed. The power component is rotatably connected to the filter plate (9), and the rotation directions of the filter plate (9) and the filter element (4) are opposite.

2. The air flotation oil removal device for wastewater treatment of compatibilizers for bitumen-based waterproof membranes according to claim 1, characterized in that: The pumping mechanism (2) has a conveying pipe end connected to a flow connecting cylinder (10). The bottom of the flow connecting cylinder (10) is fixedly connected to the air flotation tank (1), and the top of the flow connecting cylinder (10) is rotatably connected to the connecting pipe (3).

3. The air flotation oil removal device for wastewater treatment of compatibilizers for bitumen-based waterproof membranes according to claim 1, characterized in that: The fixing block (6) has a U-shaped structure. The middle part of the pressing rod (5) has a sliding groove (11) that slides with the rotating shaft (7). The rotating shaft (7) has a mating groove (12).

4. The air flotation oil removal device for wastewater treatment of compatibilizers for bitumen-based waterproof membranes according to claim 1, characterized in that: The end of the pressure rod (5) is fixedly connected to a first limiting plate (13) that slides with the inner wall of the filter element (4), and the middle part of the first limiting plate (13) is fixedly connected to a second limiting plate (14) that presses against the edge of the filter element (4).

5. The air flotation oil removal device for wastewater treatment of compatibilizers for bitumen-based waterproof membranes according to claim 1, characterized in that: The mounting component includes an L-shaped rod (15) that is fixed to the fixed block (6). A rectangular plate (16) is fixedly connected to the end of the L-shaped rod (15). An extension plate (17) is fixedly connected to the top of the flotation tank (1). A first sliding groove (18) and a second sliding groove (19) that are interconnected are provided on the extension plate (17). The L-shaped rod (15) cooperates with the first sliding groove (18), and the rectangular plate (16) is inserted into the second sliding groove (19).

6. The air flotation oil removal device for wastewater treatment of compatibilizers for bitumen-based waterproof membranes according to claim 5, characterized in that: The top of the extension plate (17) is fixedly connected to the base plate (20), and the base plate (20) and the rectangular plate (16) are connected by screws.

7. The air flotation oil removal device for wastewater treatment of compatibilizers for bitumen-based waterproof membranes according to claim 1, characterized in that: The connecting pipe (3) is located between the two movable plates (8).

8. The air flotation oil removal device for wastewater treatment of compatibilizers for bitumen-based waterproof membranes according to claim 1, characterized in that: The power component includes a motor (21) fixedly connected to the outside of the flotation tank (1). The output shaft of the motor (21) passes through the flotation tank (1) and is fixedly connected to a rotating shaft (22). A first bevel gear (23) is fixedly connected to the end of the rotating shaft (22). A second bevel gear (24) is fixedly connected to the bottom of the connecting pipe (3). A third bevel gear (25) is provided above the second bevel gear (24) and is rotatably connected to the connecting pipe (3). The first bevel gear (23) meshes with the second bevel gear (24) and the third bevel gear (25) respectively. The edge of the third bevel gear (25) is connected and fixed to the filter plate (9) through a connecting cylinder (26).

9. The air flotation oil removal device for wastewater treatment of compatibilizers for bitumen-based waterproof membranes according to claim 8, characterized in that: The air flotation tank (1) is fixedly connected to a protective cylinder (27) that is movably connected to the connecting pipe (3). The rotating shaft (22) is movably inserted into the protective cylinder (27), and the top of the protective cylinder (27) is rotatably connected to the connecting cylinder (26).

10. The air flotation oil removal device for wastewater treatment of compatibilizers for bitumen-based waterproof membranes according to claim 9, characterized in that: The filter plate (9) is bent, and the top edge of the protective cylinder (27) is inclined.

Images