An oil-water separation device for wastewater treatment

Abstract

This utility model discloses an oil-water separation device for wastewater treatment, relating to the field of oil-water separation technology. It includes a separation tank with a first and second partition fixed inside. The first and second partitions are fixedly connected and divide the interior of the separation tank into upper and lower parts. A through hole is formed on the first partition, and a sliding groove is formed on the second partition, with the through hole communicating with the sliding groove. A hydraulic cylinder is installed on the right side of the separation tank. Oily wastewater is pumped into the separation tank using a pumping component. After all the oil in the wastewater floats to the surface, the lower layer of wastewater is discharged using a pumping component. When the water-oil boundary line in the separation tank approaches the first partition, a push plate is inserted into the through hole by the hydraulic cylinder to engage with it. Complete oil-water separation is achieved using a hydrophobic membrane, allowing the oil to be discharged along the oil drain pipe, while the wastewater is completely discharged by the pumping component.

Description

Technical Field

[0001] This utility model relates to the field of oil-water separation technology, and in particular to an oil-water separation device for sewage treatment. Background Technology

[0002] Wastewater refers to wastewater discharged from domestic and industrial processes that has been polluted to a certain extent. Water that has lost its original function is simply called wastewater. Common wastewater often exists as a mixture of water and oil. When treating wastewater, it is necessary to separate the water and oil to facilitate their separate treatment in subsequent processes.

[0003] When hydrophobic membranes are used directly for water-oil separation, the limited lifespan of the membrane means that it needs to be replaced frequently. This not only wastes a lot of time on membrane replacement but also increases the cost of using the membrane, which in turn increases the cost of wastewater treatment. Utility Model Content

[0004] The purpose of this application is to provide an oil-water separation device for wastewater treatment, in order to solve the problem mentioned in the background art that when directly using a hydrophobic membrane for oil-water separation, the hydrophobic membrane has a very limited single-use lifespan, which means that the oil-water separation in wastewater requires frequent replacement of the hydrophobic membrane. This not only wastes a lot of time on the replacement of the hydrophobic membrane, but also increases the cost of using the hydrophobic membrane, thereby increasing the cost of wastewater treatment.

[0005] To achieve the above objectives, this application provides the following technical solution: an oil-water separation device for wastewater treatment, comprising a separation box, wherein a first partition and a second partition are fixedly fixed inside the separation box, the first partition and the second partition are fixedly connected, and the first partition and the second partition divide the interior of the separation box into upper and lower parts, the first partition has a through hole, and the second partition has a sliding groove, the through hole and the sliding groove being connected, a hydraulic cylinder is installed on the right side of the separation box, a carrier block is fixedly installed at the output end of the hydraulic cylinder, and two fixing rods are fixed on the left side of the carrier block. A sealing block is fixed to the left end of the separator, and a support plate is fixed to the left side of the sealing block. Both the sealing block and the support plate slide against the inner wall of the chute. A reserved groove is provided on the support plate, and an inlet and outlet hole is provided on the reserved groove. A hydrophobic membrane and a pressure plate are placed on the reserved groove, and screws are installed on the pressure plate. The support plate, the hydrophobic membrane, and the pressure plate are fixed by screws. The left side of the support plate is adapted to the through hole. A pumping assembly is installed on the left side of the separator, and a pumping assembly is installed on the right side of the separator. The pumping assembly is used for pumping in oily wastewater, and the pumping assembly is used for discharging oil-free wastewater.

[0006] Furthermore, a rubber sheet is installed on the lower part of the pressure plate, and a sealing strip is installed on the outside of the support plate.

[0007] Furthermore, a support mesh is installed inside the inlet / outlet hole, and the hydrophobic membrane is located directly above the support mesh.

[0008] Furthermore, an oil drain pipe is fixedly connected to the left side of the separation box. The oil drain pipe is located above the first partition and a valve is installed on the oil drain pipe.

[0009] Furthermore, the pumping assembly includes a first carrier plate, which is fixedly installed on the left side of the separation tank. A first pump is mounted on the first carrier plate, and a drain pipe is fixedly connected between the inlet of the first pump and the separation tank. An outlet pipe is fixedly connected to the outlet of the first pump.

[0010] Furthermore, the pumping assembly includes a second carrier plate, which is fixedly installed on the right side of the separation tank. A second pump is mounted on the second carrier plate, with the inlet of the second pump fixedly connected to an input pipe and the outlet of the second pump fixedly connected to a delivery pipe.

[0011] Furthermore, the liquid delivery tube is fixedly fitted with two end plates, and a sleeve is fixed between the two end plates. The sleeve is fitted onto the outside of the liquid delivery tube, and an electric heating wire is installed inside the sleeve.

[0012] Furthermore, a diversion block is installed inside the separation box, which is located directly below the liquid outlet of the liquid delivery pipe. A reinforcing block is fixedly sleeved on the outside of the liquid delivery pipe, and the reinforcing block is fixedly installed on the right side of the separation box.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] In this invention, an inlet component is used to send oily wastewater into the interior of the separation tank. After all the oil in the wastewater floats to the surface, the outlet component can be used to discharge the lower layer of wastewater. When the water-oil boundary line in the separation tank approaches the first partition, a hydraulic cylinder pushes the plate into the through hole to fit it. The hydrophobic membrane is used to completely separate the oil and water, allowing the oil to be discharged along the oil drain pipe, while the wastewater is completely discharged by the outlet component. In this way, the replacement cycle of the hydrophobic membrane is effectively extended, and the usage cost of the hydrophobic membrane is reduced.

[0015] In this invention, a hydraulic cylinder is used to adjust the position of the pallet in the chute, so that when the hydrophobic membrane needs to be replaced, the hydraulic cylinder can pull the pallet away from the chute. This makes it convenient for workers to replace the hydraulic cylinder from outside the separation box. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of an oil-water separation device for wastewater treatment according to an embodiment of this application;

[0018] Figure 2 This is a diagram showing the positional relationship between the separator, drain pipe, pump inlet assembly, and pump outlet assembly in the embodiments of this application.

[0019] Figure 3 This is a diagram showing the connection relationship between the first partition and the second partition in an embodiment of this application;

[0020] Figure 4 This is a diagram showing the positional relationship between the fixing rod, sealing block, support plate, and pressure plate in the embodiments of this application;

[0021] Figure 5 This is a unfolded view of the tray, hydrophobic membrane, pressure plate, and rubber sheet in the embodiments of this application.

[0022] In the diagram: 1. Separation box; 2. First partition; 3. Second partition; 4. Through hole; 5. Slide groove; 6. Hydraulic cylinder; 7. Carrier block; 8. Fixing rod; 9. Sealing block; 10. Support plate; 11. Reserved groove; 12. Hydrophobic membrane; 13. Pressure plate; 14. Rubber sheet; 15. Oil drain pipe; 16. First carrier plate; 17. First pump; 18. Drain pipe; 19. Output pipe; 20. Second carrier plate; 21. Second pump; 22. Input pipe; 23. Liquid delivery pipe; 24. End plate; 25. Sleeve; 26. Heating wire; 27. Reinforcing block; 28. Diverter block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example: Reference Figure 1-5The illustrated oil-water separation device for wastewater treatment includes a separation box 1. A first partition 2 and a second partition 3 are fixedly installed inside the separation box 1. The first partition 2 and the second partition 3 are fixedly connected, dividing the interior of the separation box 1 into upper and lower parts. A through hole 4 is provided on the first partition 2, and a sliding groove 5 is provided on the second partition 3. The through hole 4 communicates with the sliding groove 5. A hydraulic cylinder 6 is installed on the right side of the separation box 1. The hydraulic cylinder is equipped with a power source, the power source being a conventional setting in the field, which can be implemented by technicians based on existing technology. A carrier block 7 is fixedly installed at the output end of the hydraulic cylinder 6. Two fixing rods 8 are fixed on the left side, and a sealing block 9 is fixed at the left end of the two fixing rods 8. A support plate 10 is fixed on the left side of the sealing block 9. Both the sealing block 9 and the support plate 10 slide in cooperation with the inner wall of the slide groove 5. A reserved groove 11 is opened on the support plate 10, and an inlet and outlet hole is opened on the reserved groove 11. A hydrophobic membrane 12 and a pressure plate 13 are placed on the reserved groove 11. A support net is installed inside the inlet and outlet hole. The hydrophobic membrane 12 is located directly above the support net. The support net in the inlet and outlet hole is used to assist in supporting the hydrophobic membrane 12 to maintain the stability of the shape of the hydrophobic membrane 12. Screws are installed on the pressure plate 13. The support plate 10, the hydrophobic membrane 12 and the pressure plate 13 are fixed by screws.

[0025] The position of the support plate 10 in the slide 5 is adjusted by the hydraulic cylinder 6 so that when the hydrophobic membrane 12 needs to be replaced, the hydraulic cylinder 6 can pull the support plate 10 away from the slide 5. In this way, it is convenient for workers to replace the hydraulic cylinder 6 from the outside of the separation box 1. A rubber sheet 14 is installed on the lower part of the pressure plate 13. The use of the rubber sheet 14 allows the pressure plate 13 and the support plate 10 to better clamp the hydrophobic membrane 12. The left side of the support plate 10 is adapted to the through hole 4. A sealing strip is installed on the outside of the support plate 10. The use of the sealing strip on the support plate 10 is to make the support plate 10 fit more tightly with the inner wall of the through hole 4. A pumping assembly is installed on the left side of the separation box 1, and a pumping assembly is installed on the right side of the separation box 1. The pumping assembly is used to pump in oily sewage, and the pumping assembly is used to discharge oil-free sewage. An oil drain pipe 15 is fixedly connected to the left side of the separation box 1. The oil drain pipe 15 is located on the upper part of the first partition 2, and a valve is installed on the oil drain pipe 15.

[0026] Oily wastewater is pumped into the separation tank 1 using the pumping component. After all the oil in the wastewater floats to the surface, the lower layer of wastewater is discharged using the pumping component. When the water-oil boundary line in the separation tank 1 approaches the first partition 2, the hydraulic cylinder 6 pushes the support plate 10 into the through hole 4 to fit it. The hydrophobic membrane 12 is used to completely separate the oil and water, so that the oil is discharged along the oil drain pipe 15, and the wastewater is completely discharged by the pumping component. In this way, the replacement cycle of the hydrophobic membrane 12 is effectively extended, and the usage cost of the hydrophobic membrane 12 is reduced.

[0027] The pumping assembly includes a first carrier plate 16, which is fixedly installed on the left side of the separation tank 1. A first pump 17 is installed on the first carrier plate 16. A drain pipe 18 is fixedly connected between the inlet of the first pump 17 and the separation tank 1. An outlet pipe 19 is fixedly connected between the outlet of the first pump 17 and the drain pipe 18. The first pump 17 can be used to send the sewage inside the separation tank 1 to the outlet pipe 19 along the drain pipe 18, so that the sewage is discharged along the outlet pipe 19.

[0028] The pumping assembly includes a second carrier plate 20, which is fixedly installed on the right side of the separation chamber 1. A second pump 21 is installed on the second carrier plate 20. The inlet of the second pump 21 is fixedly connected to an input pipe 22, and the outlet of the second pump 21 is fixedly connected to a delivery pipe 23. Two end plates 24 are fixedly sleeved on the outside of the delivery pipe 23. A sleeve 25 is fixed between the two end plates 24. The sleeve 25 is sleeved on the outside of the delivery pipe 23, and an electric heating wire 26 is installed inside the sleeve 25. A diverter block 28 is installed inside the separation chamber 1. The diverter block 28 is located directly below the outlet of the delivery pipe 23. A reinforcing block 27 is fixedly sleeved on the outside of the delivery pipe 23. The reinforcing block 27 is fixedly installed on the right side of the separation chamber 1 to reinforce the delivery pipe 23.

[0029] The second pump 21 is used to send the oily wastewater along the input pipe 22 to the delivery pipe 23. The heating wire 26 heats the wastewater passing through the delivery pipe 23, so that the oil in the wastewater is completely liquefied, which facilitates the separation of water and oil in the wastewater. The diversion block 28 is used to guide the oily wastewater and reduce the splash height when the wastewater is introduced.

[0030] Working principle of this utility model:

[0031] The second pump 21 is started to operate, so that the second pump 21 draws oily wastewater along the input pipe 22. The second pump 21 sends the drawn oily wastewater to the liquid delivery pipe 23, so that it is injected into the interior of the separation tank 1 through the liquid delivery pipe 23. During this process, the heating wire 26 is energized to heat the wastewater passing through the liquid delivery pipe 23, so that all the oil in the wastewater is converted into liquid, so as to facilitate the subsequent water-oil separation.

[0032] After the oily wastewater fills the separation tank 1, wait 30 minutes to allow the oil to float completely to the surface. Then, start the first pump 17 and pump it into operation. The first pump 17 draws the wastewater from the bottom of the separation tank 1 along the drain pipe 18 and sends it to the next device for further processing along the output pipe 19. When the oil-water boundary line moves down to a position 1-2 cm away from the first partition 2, the hydraulic cylinder 6 is activated to retract, causing the hydraulic cylinder 6 to pull the support plate 10 to the left. The support plate 10 is inserted into the through hole 4. At this time, the oil-water mixture on the upper layer of the hydrophobic membrane 12 is separated by the hydrophobic membrane 12. The oil stays above the hydrophobic membrane 12, while the wastewater is completely discharged by the first pump 17. Open the valve on the oil drain pipe 15, and the oil inside the separation tank 1 can be discharged along the oil drain pipe 15. At this time, the hydrophobic membrane 12 is only used briefly, thus extending the replacement cycle of the hydrophobic membrane 12.

[0033] When replacing the hydrophobic membrane 12, the separation box 1 can be emptied, the hydraulic cylinder 6 can be used to drive the pallet 10 away from the slide 5, and the pressure plate 13 and rubber sheet 14 can be removed before the hydrophobic membrane 12 can be replaced, which improves the convenience of replacing the hydrophobic membrane 12.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil-water separation device for wastewater treatment, comprising a separation tank (1), characterized in that: The separation box (1) is internally fixed with a first partition (2) and a second partition (3). The first partition (2) and the second partition (3) are fixedly connected, and the first partition (2) and the second partition (3) divide the interior of the separation box (1) into upper and lower parts. The first partition (2) has a through hole (4), and the second partition (3) has a sliding groove (5). The through hole (4) and the sliding groove (5) are connected. A hydraulic cylinder (6) is installed on the right side of the separation box (1). A carrier block (7) is fixedly installed at the output end of the hydraulic cylinder (6). Two fixing rods (8) are fixed on the left side of the carrier block (7). A sealing block (9) is fixed at the left end of the two fixing rods (8). The sealing block (9) is fixed on the left side. A support plate (10) is provided. The sealing block (9) and the support plate (10) are slidably fitted with the inner wall of the slide groove (5). A reserved groove (11) is provided on the support plate (10). An inlet and outlet hole is provided on the reserved groove (11). A hydrophobic membrane (12) and a pressure plate (13) are placed on the reserved groove (11). Screws are installed on the pressure plate (13). The support plate (10), the hydrophobic membrane (12) and the pressure plate (13) are fixed by screws. The left side of the support plate (10) is adapted to the through hole (4). A pumping assembly is installed on the left side of the separation box (1). A pumping assembly is installed on the right side of the separation box (1). The pumping assembly is used for pumping in oily wastewater. The pumping assembly is used for discharging oil-free wastewater.

2. The oil-water separation device for wastewater treatment according to claim 1, characterized in that: A rubber sheet (14) is installed on the lower part of the pressure plate (13), and a sealing strip is installed on the outside of the support plate (10).

3. The oil-water separation device for wastewater treatment according to claim 1, characterized in that: A support net is installed inside the inlet / outlet hole, and the hydrophobic membrane (12) is located directly above the support net.

4. The oil-water separation device for wastewater treatment according to claim 1, characterized in that: The left side of the separation box (1) is fixedly connected to an oil drain pipe (15), which is located above the first partition (2) and is equipped with a valve.

5. The oil-water separation device for wastewater treatment according to claim 1, characterized in that: The pumping assembly includes a first carrier plate (16), which is fixedly installed on the left side of the separation tank (1). A first pump (17) is installed on the first carrier plate (16). A drain pipe (18) is fixedly connected between the inlet of the first pump (17) and the separation tank (1), and an outlet pipe (19) is fixedly connected to the outlet of the first pump (17).

6. The oil-water separation device for wastewater treatment according to claim 1, characterized in that: The pumping assembly includes a second carrier plate (20), which is fixedly installed on the right side of the separation box (1). A second pump (21) is installed on the second carrier plate (20). The inlet of the second pump (21) is fixedly connected to an input pipe (22), and the outlet of the second pump (21) is fixedly connected to a delivery pipe (23).

7. The oil-water separation device for wastewater treatment according to claim 6, characterized in that: The liquid delivery tube (23) is fixedly fitted with two end plates (24), and a sleeve (25) is fixed between the two end plates (24). The sleeve (25) is fitted onto the outside of the liquid delivery tube (23), and an electric heating wire (26) is installed inside the sleeve (25).

8. The oil-water separation device for wastewater treatment according to claim 7, characterized in that: The separation box (1) is equipped with a diversion block (28) located directly below the outlet of the liquid delivery pipe (23). A reinforcing block (27) is fixedly sleeved on the outside of the liquid delivery pipe (23) and the reinforcing block (27) is fixedly installed on the right side of the separation box (1).

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