Oil-water separation device

Abstract

The invention relates to the technical field of oil sewage treatment, and particularly discloses an oil-water separation device which comprises a separation box, an inner cavity of the separation box is connected with a metal sintering net for coalescence, one side of the separation box is connected with a liquid inlet pipe, a one-way valve is arranged on the liquid inlet pipe, and a flushing module is arranged below the metal sintering net for coalescence. The washing module comprises a hollow plate, an inner groove opening and nozzles, the hollow plate is in sliding fit with the bottom of the metal sintering net for coalescence, the inner groove opening is formed in the middle of the top of the hollow plate, the nozzles are arranged in the inner groove opening at equal intervals, the bottom ends of the nozzles are connected with the hollow plate, and the nozzles communicate with an inner cavity of the hollow plate; when oil-water separation is carried out through the metal sintering net for coalescence, the oil-water separation effect of the metal sintering net for coalescence is monitored through the water flow sensor, and when the oil-water separation effect is reduced due to blockage of the metal sintering net for coalescence, the metal sintering net for coalescence is automatically cleaned through the flushing module and the oil guide module.

Description

Technical Field

[0001] This invention belongs to the field of oily wastewater treatment technology, and specifically relates to an oil-water separation device. Background Technology

[0002] Coalescing oil-water separation is a highly efficient and commonly used physical method for separating immiscible oil-water mixtures. Its core principle is to utilize the properties of coalescing materials to aggregate tiny oil droplets into larger droplets, thereby achieving rapid and thorough separation by relying on gravity differences. In an oil-water separation device integrating coalescence and adsorption, authorized publication number CN222434212U, continuous oil removal is achieved through a combination of coalescence and adsorption. However, the coalescing material relies on complex and tortuous microporous channels to capture oil droplets, which can lead to clogging problems. It is impossible to automatically clean the coalescing material to ensure the oil-water separation effect. Summary of the Invention

[0003] The purpose of this invention is to provide an oil-water separation device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: An oil-water separation device includes a separation chamber with a coalescing metal sintered mesh connected to its inner cavity. An inlet pipe is connected to one side of the separation chamber, and a one-way valve is installed on the inlet pipe. A flushing module is located below the coalescing metal sintered mesh. The flushing module includes a hollow plate, an inner groove, and nozzles. The hollow plate is slidably fitted to the bottom of the coalescing metal sintered mesh. The inner groove is located at the top center of the hollow plate. The nozzles are equidistantly positioned within the inner groove, with their bottom ends connected to the hollow plate and communicating with the inner cavity of the hollow plate. An oil removal module is located above the coalescing metal sintered mesh, and the oil removal module includes a conveyor belt positioned above the inlet pipe. An oil guiding module is located on one side of the separation chamber, and the oil guiding module includes an oil guiding cover, a connecting pipe, and a three-stage solenoid valve. The oil guiding cover is connected to the separation chamber, and the connecting pipe is equidistantly connected to one side of the separation chamber, positioned below the conveyor belt. The three-stage solenoid valve is located on the connecting pipe and within the oil guiding cover. Support legs are connected to the four corners of the bottom of the separation chamber.

[0005] Preferably, the rinsing module further includes a drive motor, a movable plate, and a drive screw. The drive motor is connected to one side of the separation box by positioning bolts. The movable plate is connected to the bottom middle of the hollow plate. One end of the drive screw is connected to the output end of the drive motor, and the other end of the drive screw passes through the movable plate and is connected to the bearing on the inner wall of the separation box. The outer wall of the drive screw is connected to the movable plate by external threads.

[0006] Preferably, the flushing module further includes a hot water tank, a pump body, a main pipe and branch pipe fittings. The hot water tank is connected to the top center of one side of the separation box by positioning bolts. The pump body is connected to the bottom center of the hot water tank by positioning bolts. The pump body and the hot water tank are connected by a conduit. The branch pipe fittings are connected to the bottom of the hollow plate, and there is a gap between the branch pipe fittings and the movable plate. Both ends of the branch pipe fittings are connected to the inner cavity of the hollow plate. One end of the main pipe is connected to the pump body, and the other end of the main pipe passes through one side of the separation box and is connected to the bottom center of the branch pipe fittings. The pump body sprays the hot water in the hot water tank sequentially through the main pipe, branch pipe fittings, hollow plate, and nozzles onto the coalescing metal sintered mesh. The main pipe includes a rigid end and a telescopic end. The rigid end is located outside the separation box, and the telescopic end is located inside the separation box. The telescopic end is designed to ensure the water supply effect of the main pipe without affecting the movement of the hollow plate.

[0007] Preferably, the oil removal module further includes rotating rollers, square slots, scrapers, oil outlet ramps, and baffles. Two sets of rotating rollers are provided, and a conveyor belt is sleeved on the outer wall of the two sets of rotating rollers. The conveyor belt is inclined. The scraper is located below the conveyor belt and is in contact with the conveyor belt. Both ends of the scraper are connected to the separation box. The square slot is opened on one side of the separation box. The oil outlet ramp is located inside the square slot. One end of the oil outlet ramp passes through the square slot and is located below the scraper. The other end of the oil outlet ramp passes through the square slot and is located outside the separation box. The baffles are symmetrically connected to both sides of the oil outlet ramps, and one side of the baffles is connected to the separation box. The scraper scrapes off the oil on the conveyor belt. The oil falls to the top of the oil outlet ramp below and is then discharged from the separation box. A stepper motor is connected to the front of the separator box via positioning bolts, and the output shaft of the stepper motor passes through the separator box and is connected to the rotating roller located above; the conveyor belt is made of oleophilic and hydrophobic material.

[0008] Preferably, the oil guiding module further includes an isolation plate, a circular hole, and an electric telescopic rod. The isolation plate is located below the sintered metal mesh for coalescence, and the outer wall of the isolation plate is slidably fitted with the inner wall of the separation box. The circular hole is opened at the top of the isolation plate, and the bottom end of the circular hole penetrates through the isolation plate. The electric telescopic rod is connected to the middle of the bottom surface of the inner cavity of the separation box, and the top end of the output end of the electric telescopic rod is connected to the middle of the bottom surface of the isolation plate. The output end of the electric telescopic rod drives the isolation plate to rise and fall.

[0009] Preferably, the oil guiding module also includes a water outlet pipe, a water flow sensor, and a primary solenoid valve. The top of the water outlet pipe is located inside a circular hole, and the outer wall of the water outlet pipe is connected to the isolation plate. The bottom of the water outlet pipe passes through the circular hole and the separation box, and the outer wall of the water outlet pipe and the separation box are in sliding fit. The water flow sensor is located at the top of the inside of the water outlet pipe, and the primary solenoid valve is located on the water outlet pipe and at the bottom of the isolation plate. The water flow sensor monitors the flow rate of the water flowing out of the water outlet pipe.

[0010] Preferably, the oil guiding module further includes a sliding groove, a sliding plate, an embedded groove, a hydrophilic and oleophobic plate, an equipment groove, a pressure sensor, a limiting groove, a limiting plate, an outlet pipe, and a secondary solenoid valve. The sliding groove is formed on the side wall of the inner cavity of the oil guiding cover, the sliding plate is slidably fitted into the sliding groove, the embedded groove is formed on one side of the sliding plate, the hydrophilic and oleophobic plate is embedded in the embedded groove, the equipment groove is formed on one side of the bottom surface of the inner cavity of the oil guiding cover, and the top of the equipment groove is connected to the sliding groove. The pressure sensor is located in the middle of the equipment groove, and the pressure sensor... The upper and lower ends are connected to the sliding plate and the oil guide cover, respectively. The limiting slot is opened on one side of the oil guide cover, and the limiting plate is located on one side of the oil guide cover. The limiting plate has a T-shaped structure, and the tail end of the limiting plate passes through the limiting slot and is connected to the sliding plate. The outlet pipe is connected to the bottom of the oil guide cover on the side away from the separation box. The secondary solenoid valve is located on the outlet pipe. When the water comes into contact with the hydrophilic oleophobic plate, the hydrophilic oleophobic plate absorbs the water, which increases the weight of the sliding plate and the hydrophilic oleophobic plate monitored by the pressure sensor. When the weight reaches the preset value, it indicates that the oil has been drained.

[0011] Preferably, the oil guiding module further includes a mounting plate, an internal chamber, a contact switch, a top plate, a connecting rod, and a float. The mounting plate is connected to the rear side of the inner cavity of the separation tank and is located above the metal sintering mesh for coalescence. The internal chamber is opened inside the mounting plate. The contact switch and the top plate are both located inside the internal chamber, with the contact switch located above the top plate. The top of the contact switch is connected to the mounting plate, and the outer wall of the top plate slides in fit with the mounting plate. The float is located below the mounting plate, and the connecting rod is connected to the middle of the bottom of the top plate. The bottom end of the connecting rod penetrates the mounting plate and is connected to the middle of the top surface of the float. The float is used to monitor the liquid level.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: When the present invention is used for oil-water separation through the coalescing metal sintered mesh, the large oil droplets floating on the liquid surface are removed by the oil removal module, and the oil-water separation effect of the coalescing metal sintered mesh is monitored by the water flow sensor. When the oil-water separation effect of the coalescing metal sintered mesh is reduced due to blockage, the coalescing metal sintered mesh is automatically cleaned by the flushing module and the oil guiding module. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an oil-water separation device.

[0014] Figure 2 This is a schematic diagram of the bottom structure of an oil-water separation device.

[0015] Figure 3 This is a schematic diagram of the rear internal structure of an oil-water separation device.

[0016] Figure 4 This is a schematic diagram of the internal structure of an oil-water separation device.

[0017] Figure 5 This is a schematic diagram of a hollow plate component in an oil-water separation device.

[0018] Figure 6 This is a schematic diagram of an electric telescopic rod for an oil-water separator.

[0019] Figure 7 This is a schematic diagram of the internal structure of the oil guide cover of an oil-water separation device.

[0020] Figure 8 This is a schematic diagram of a pressure sensor for an oil-water separation device.

[0021] Figure 9 This is a cross-sectional view of the mounting plate of an oil-water separation device.

[0022] In the diagram: 1. Separation box; 2. Sintered metal mesh for coalescence; 3. Inlet pipe; 4. One-way valve; 5. Flushing module; 51. Hollow plate; 52. Inner groove; 53. Nozzle; 54. Drive motor; 55. Moving plate; 56. Drive screw; 57. Hot water tank; 58. Pump body; 59. Main pipe; 510. Branch pipe fittings; 6. Oil removal module; 61. Conveyor belt; 62. Rotating roller; 63. Square groove; 64. Scraper; 65. Oil outlet ramp; 66. Baffle; 7. Oil guiding module; 71. Oil guiding cover; 72. Connecting pipe fittings; 73. Three-stage solenoid valve; 74. 75. Isolation plate; 76. Round hole; 77. Electric telescopic rod; 78. Water outlet pipe; 79. Water flow sensor; 70. Primary solenoid valve; 710. Sliding groove; 711. Sliding plate; 712. Embedded groove; 713. Hydrophilic and oleophobic plate; 714. Equipment groove; 715. Pressure sensor; 716. Restriction groove; 717. Restriction plate; 718. Outlet pipe; 719. Secondary solenoid valve; 720. Mounting plate; 721. Internal chamber; 722. Contact switch; 723. Top plate; 724. Connecting rod; 725. Float; 8. Support leg. Detailed Implementation

[0023] Example 1 Please see Figures 1-9As shown, an oil-water separation device includes a separation chamber 1. A coalescing metal sintered mesh 2 is connected to the inner cavity of the separation chamber 1. An inlet pipe 3 is connected to one side of the separation chamber 1, and a one-way valve 4 is installed on the inlet pipe 3. A rinsing module 5 is located below the coalescing metal sintered mesh 2. The rinsing module 5 includes a hollow plate 51, an inner groove 52, and nozzles 53. The hollow plate 51 is slidably fitted to the bottom of the coalescing metal sintered mesh 2. The inner groove 52 is located at the top center of the hollow plate 51. The nozzles 53 are equidistantly arranged within the inner groove 52, and the bottom end of the nozzles 53 is connected to the hollow plate 51. The inner cavities of the 51 are interconnected. An oil removal module 6 is provided above the coalescing metal sintered mesh 2. The oil removal module 6 includes a conveyor belt 61, which is located above the liquid inlet pipe 3. An oil guiding module 7 is provided on one side of the separation box 1. The oil guiding module 7 includes an oil guiding cover 71, a connecting pipe 72, and a three-stage solenoid valve 73. The oil guiding cover 71 is connected to the separation box 1. The connecting pipe 72 is equidistantly connected to one side of the separation box 1 and is located below the conveyor belt 61. The three-stage solenoid valve 73 is located on the connecting pipe 72 and is located inside the oil guiding cover 71. Support legs 8 are connected to the four corners of the bottom of the separation box 1.

[0024] refer to Figures 1-5 As shown, the rinsing module 5 also includes a drive motor 54, a movable plate 55, and a drive screw 56. The drive motor 54 is connected to one side of the separation box 1 by positioning bolts. The movable plate 55 is connected to the bottom middle of the hollow plate 51. One end of the drive screw 56 is connected to the output end of the drive motor 54, and the other end of the drive screw 56 passes through the movable plate 55 and is connected to the bearing on the inner wall of the separation box 1. The outer wall of the drive screw 56 is connected to the movable plate 55 by external threads.

[0025] refer to Figures 1-7 As shown, the flushing module 5 also includes a hot water tank 57, a pump body 58, a main pipe 59, and a branch pipe 510. The hot water tank 57 is connected to the top center of one side of the separation box 1 by positioning bolts. The pump body 58 is connected to the bottom center of the hot water tank 57 by positioning bolts. The pump body 58 and the hot water tank 57 are connected by a conduit. The branch pipe 510 is connected to the bottom of the hollow plate 51, and there is a gap between the branch pipe 510 and the movable plate 55. Both ends of the branch pipe 510 are connected to the inner cavity of the hollow plate 51. One end of the main pipe 59 is connected to the pump body 58, and the other end of the main pipe 59 passes through one side of the separation box 1 and is connected to the bottom center of the branch pipe 510. The pump body 58 sprays the hot water in the hot water tank 57 sequentially through the main pipe 59, the branch pipe 510, the hollow plate 51, and the nozzle 53 onto the coalescing metal sintered mesh 2. The main pipe 59 includes a rigid end and a telescopic end. The rigid end is located outside the separation box 1, and the telescopic end is located inside the separation box 1. The telescopic end is designed to ensure the water supply effect of the main pipe 59 without affecting the movement of the hollow plate 51.

[0026] refer to Figures 1-4 As shown, the oil removal module 6 also includes a rotating roller 62, a square slot 63, a scraper 64, an oil outlet inclined plate 65, and a baffle 66. The rotating roller 62 is provided in two sets. The conveyor belt 61 is sleeved on the outer wall of the two sets of rotating rollers 62 and is inclined. The scraper 64 is located below the conveyor belt 61 and is in contact with the conveyor belt 61. Both ends of the scraper 64 are connected to the separation box 1. The square slot 63 is opened on one side of the separation box 1. The oil outlet inclined plate 65 is located inside the square slot 63. One end of the oil outlet inclined plate 65 passes through the square slot 63 and is located below the scraper 64. The other end of the oil outlet inclined plate 65 passes through the square slot 63 and is located outside the separation box 1. The baffle 66 is symmetrically connected to both sides of the oil outlet inclined plate 65 and one side of the baffle 66 is connected to the separation box 1. The scraper 64 scrapes off the oil on the conveyor belt 61. The oil falls to the top of the oil outlet inclined plate 65 below and is then discharged out of the separation box 1. A stepper motor is connected to the front of the separation box 1 by positioning bolts, and the output shaft of the stepper motor passes through the separation box 1 and is connected to the rotating roller 62 located above; the conveyor belt 61 is made of oleophilic and hydrophobic material.

[0027] refer to Figures 3-6 As shown, the oil guiding module 7 also includes an isolation plate 74, a circular hole 75, and an electric telescopic rod 76. The isolation plate 74 is located below the coalescing metal sintered mesh 2, and the outer wall of the isolation plate 74 is slidably fitted with the inner wall of the separation box 1. The circular hole 75 is opened at the top of the isolation plate 74, and the bottom end of the circular hole 75 penetrates through the isolation plate 74. The electric telescopic rod 76 is connected to the middle of the bottom surface of the inner cavity of the separation box 1, and the top end of the output end of the electric telescopic rod 76 is connected to the middle of the bottom surface of the isolation plate 74. The output end of the electric telescopic rod 76 drives the isolation plate 74 to rise and fall.

[0028] refer to Figures 3-6 As shown, the oil guiding module 7 also includes a water outlet pipe 77, a water flow sensor 78, and a primary solenoid valve 79. The top end of the water outlet pipe 77 is located inside the circular hole 75, and the outer wall of the water outlet pipe 77 is connected to the isolation plate 74. The bottom end of the water outlet pipe 77 passes through the circular hole 75 and the separation box 1, and the outer wall of the water outlet pipe 77 and the separation box 1 are in sliding fit. The water flow sensor 78 is located at the top inside the water outlet pipe 77, and the primary solenoid valve 79 is located on the water outlet pipe 77 and at the bottom of the isolation plate 74. The water flow sensor 78 monitors the flow rate of the water flowing out of the water outlet pipe 77.

[0029] refer to Figure 1 , Figure 2 , Figures 4-8As shown, the oil guiding module 7 also includes a sliding groove 710, a sliding plate 711, an embedded groove 712, a hydrophilic and oleophobic plate 713, an equipment groove 714, a pressure sensor 715, a limiting groove 716, a limiting plate 717, an outlet pipe 718, and a secondary solenoid valve 719. The sliding groove 710 is formed on the inner wall of the oil guiding cover 71. The sliding plate 711 is slidably fitted into the sliding groove 710. The embedded groove 712 is formed on one side of the sliding plate 711. The hydrophilic and oleophobic plate 713 is embedded in the embedded groove 712. The equipment groove 714 is formed on one side of the bottom surface of the inner cavity of the oil guiding cover 71, and the top of the equipment groove 714 is connected to the sliding groove 710. The pressure sensor 715 is located in the middle of the equipment groove 714. The pressure sensor 715 is connected to the sliding plate 711 and the oil guide cover 71 at its upper and lower ends, respectively. The limiting slot 716 is opened on one side of the oil guide cover 71, and the limiting plate 717 is located on one side of the oil guide cover 71. The limiting plate 717 has a T-shaped structure, and the tail end of the limiting plate 717 passes through the limiting slot 716 and is connected to the sliding plate 711. The outlet pipe 718 is connected to the bottom end of the oil guide cover 71 on the side away from the separation box 1. The secondary solenoid valve 719 is located on the outlet pipe 718. When the water comes into contact with the hydrophilic oleophobic plate 713, the hydrophilic oleophobic plate 713 absorbs the water, which increases the weight of the sliding plate 711 and the hydrophilic oleophobic plate 713 monitored by the pressure sensor 715. When the weight reaches the preset value, it indicates that the oil has been drained.

[0030] refer to Figures 4-6 and Figure 9 As shown, the oil guiding module 7 also includes a mounting plate 720, an internal chamber 721, a contact switch 722, a top plate 723, a connecting rod 724, and a float 725. The mounting plate 720 is connected to the rear side of the inner cavity of the separation box 1 and is positioned above the coalescing metal sintered mesh 2. The internal chamber 721 is opened inside the mounting plate 720. The contact switch 722 and the top plate 723 are both located inside the internal chamber 721, with the contact switch 722 positioned above the top plate 723. The top of the contact switch 722 is connected to the mounting plate 720, and the outer wall of the top plate 723 slides against the mounting plate 720. The float 725 is located below the mounting plate 720. The connecting rod 724 is connected to the bottom middle of the top plate 723, and the bottom end of the connecting rod 724 penetrates the mounting plate 720 and is connected to the middle of the top surface of the float 725. The float 725 is used to monitor the liquid level.

[0031] Working principle: Oily wastewater is guided into separation tank 1 through inlet pipe 3. Oil-water separation is performed on the oily wastewater through coalescence metal sintered mesh 2, separating the dispersed tiny droplets in the oily wastewater from the water and agglomerating them into large droplets, thereby achieving efficient separation. The agglomerated large oil droplets float to the surface of the liquid under the action of liquid buoyancy. At the same time, the stepper motor is turned on to rotate the upper rotating roller 62. Under the action of conveyor belt 61, another rotating roller 62 rotates, thereby causing the conveyor belt 61 to convey the oil. When the conveyor belt 61 passes over the liquid surface, it adsorbs the oil on the liquid surface. When the conveyor belt 61 is conveyed to the scraper 64, the scraper 64 scrapes off the oil on the conveyor belt 61. The oil falls to the top of the lower oil outlet inclined plate 65 and is then discharged out of separation tank 1. The baffle 66 blocks the oil, improving the oil guiding effect of the oil outlet inclined plate 65. When excessive oil adheres to the coalescing metal sintered mesh 2, reducing the oil-water separation effect, the amount of water flowing through the coalescing metal sintered mesh 2 decreases, and the amount of water flowing out through the outlet pipe 77 decreases. This is monitored by the water flow sensor 78. When the water flow rate decreases to a preset value, the water flow sensor 78 sends a signal to the external terminal. The external terminal receives the signal and controls the introduction of external oily wastewater into the equipment, stopping the introduction of oily wastewater through the inlet pipe 3 into the separation tank 1. At the same time, it controls the stepper motor to shut down. As the water in the separation tank 1 gradually decreases, the float 725 will drive the top plate 723 to descend until the bottom surface of the top plate 723 is in contact with the mounting plate 720. At this time, the water continues to decrease until the water is drained. At this point, no water is discharged through the outlet pipe 77. The water flow sensor 78 monitors this and sends a signal to the external terminal. The external terminal receives the signal and controls the first-stage solenoid valve 79 to close, and the pump body 58 and drive motor 54 to open. The output end of the drive motor 54 drives the drive screw 56. The pump rotates, causing the moving plate 55 to reciprocate and move the hollow plate 51 back and forth at the bottom of the coalescing metal sintered mesh 2. The pump body 58 sprays the hot water in the hot water tank 57 sequentially through the main pipe 59, branch pipe 510, hollow plate 51, and nozzle 53 onto the coalescing metal sintered mesh 2. As the hot water penetrates the coalescing metal sintered mesh 2, it flushes out the oil inside the coalescing metal sintered mesh 2. As the amount of hot water gradually increases, the water first passes through the coalescing metal sintered mesh 2 and falls to the top of the isolation plate 74. The water accumulates on the top of the isolation plate 74, and then the water level gradually rises and passes through the coalescing metal sintered mesh 2 from bottom to top. After that, the oil floats on the water surface. As the water level continues to rise, the oil rises as well. When the water and oil come into contact with the float 725, the float 725 is lifted by buoyancy, which drives the top plate 723 to rise. When the float 725 rises with the liquid level and the top plate 723 comes into contact with the contact switch 722, it indicates that the rinsing of the coalescing metal sintered mesh 2 is finished. Contact switch 722 sends a signal to the peripheral terminal. The peripheral terminal receives the signal and controls the drive motor 54 and pump body 58 to close, while the electric telescopic rod 76, the three-stage solenoid valve 73, and the two-stage solenoid valve 719 open. The output end of the electric telescopic rod 76 drives the isolation plate 74 to rise, and the liquid at the top of the isolation plate 74 rises accordingly. The oil on the surface of the water is level with the connecting pipe 72. The oil enters the oil guide cover 71 through multiple sets of connecting pipes 72 and exits through the outlet pipe 71. 8. As the liquid level continues to rise, oil will continue to be discharged from the oil guide cover 71 until all the oil is drained. Water will enter the oil guide cover 71 through the connecting pipe 72. The water comes into contact with the hydrophilic oleophobic plate 713, which absorbs the water, causing an increase in the weight of the sliding plate 711 and the hydrophilic oleophobic plate 713 monitored by the pressure sensor 715. When the weight reaches a preset value, it indicates that the oil has been drained. The pressure sensor 715 then transmits a signal to the peripheral terminal, which receives the signal. The system controls the three-stage solenoid valve 73 and the two-stage solenoid valve 719 to close. The output end of the electric telescopic rod 76 drives the isolation plate 74 and the water on top of the isolation plate 74 to descend. As the water gradually decreases, the float 725 drives the top plate 723 to descend until the bottom surface of the top plate 723 is in contact with the mounting plate 720. After the output end of the electric telescopic rod 76 is reset, the electric telescopic rod 76 sends a signal to the external terminal. The external terminal receives the signal and controls the electric telescopic rod 76 to close, the first-stage solenoid valve 79 to open, and the water on top of the isolation plate 74 is discharged through the outlet pipe 77. The water flow sensor 78 monitors the discharge. After the water is discharged, the water flow sensor 78 sends a signal to the external terminal. The external terminal receives the signal and controls the external oily wastewater to be introduced into the equipment. The oily wastewater is guided into the separation tank 1 through the inlet pipe 3. At the same time, the stepper motor is turned on to ensure the scraping effect of the conveyor belt 61 on the oil, so that the oil-water separation continues through the device.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An oil-water separation device, comprising a separation tank (1), characterized in that, The inner cavity of the separation box (1) is connected to a coalescing metal sintered mesh (2). A liquid inlet pipe (3) is connected to one side of the separation box (1). A one-way valve (4) is provided on the liquid inlet pipe (3). A flushing module (5) is provided below the coalescing metal sintered mesh (2). The flushing module (5) includes a hollow plate (51), an inner groove (52), and a nozzle (53). The hollow plate (51) is slidably fitted to the bottom of the coalescing metal sintered mesh (2). The inner groove (52) is opened in the middle of the top of the hollow plate (51). The nozzle (53) is equidistantly arranged in the inner groove (52), and the bottom end of the nozzle (53) is connected to the hollow plate (51). The nozzle (53) is connected to the inner cavity of the hollow plate (51). An oil removal module (6) is provided above the metal sintered mesh (2). The oil removal module (6) includes a conveyor belt (61) which is located above the liquid inlet pipe (3). An oil guiding module (7) is provided on one side of the separation box (1). The oil guiding module (7) includes an oil guiding cover (71), a connecting pipe (72), and a three-stage solenoid valve (73). The oil guiding cover (71) is connected to the separation box (1). The connecting pipe (72) is equidistantly connected to one side of the separation box (1) and is located below the conveyor belt (61). The three-stage solenoid valve (73) is located on the connecting pipe (72) and is located inside the oil guiding cover (71). Support legs (8) are connected to the four corners of the bottom of the separation box (1).

2. The oil-water separation device according to claim 1, characterized in that: The rinsing module (5) also includes a drive motor (54), a movable plate (55) and a drive screw (56). The drive motor (54) is connected to one side of the separation box (1) by a positioning bolt. The movable plate (55) is connected to the bottom middle of the hollow plate (51). One end of the drive screw (56) is connected to the output end of the drive motor (54). The other end of the drive screw (56) passes through the movable plate (55) and is connected to the bearing on the inner wall of the separation box (1). The outer wall of the drive screw (56) is connected to the movable plate (55) by an external thread.

3. The oil-water separation device according to claim 2, characterized in that: The flushing module (5) also includes a hot water tank (57), a pump body (58), a main pipe (59), and a branch pipe fitting (510). The hot water tank (57) is connected to the top center of one side of the separation box (1) by positioning bolts. The pump body (58) is connected to the bottom center of the hot water tank (57) by positioning bolts. The pump body (58) and the hot water tank (57) are connected by a conduit. The branch pipe fitting (510) is connected to the bottom of the hollow plate (51), and there is a gap between the branch pipe fitting (510) and the movable plate (55). Both ends of the branch pipe fitting (510) are connected to the inner cavity of the hollow plate (51). One end of the main pipe (59) is connected to the pump body (58), and the other end of the main pipe (59) passes through one side of the separation box (1) and is connected to the bottom center of the branch pipe fitting (510). The main tube (59) includes a hard end and a telescopic end, the hard end being located outside the separation box (1) and the telescopic end being located inside the separation box (1).

4. The oil-water separation device according to claim 1, characterized in that: The oil removal module (6) also includes a rotating roller (62), a square slot (63), a scraper (64), an oil outlet inclined plate (65), and a baffle (66). There are two sets of rotating rollers (62). A conveyor belt (61) is fitted on the outer wall of the two sets of rotating rollers (62) and is inclined. The scraper (64) is located below the conveyor belt (61) and is in contact with the conveyor belt (61). Both ends of the scraper (64) are connected to the separation box (1). The connection is as follows: a square slot (63) is opened on one side of the separator (1), an oil outlet sloping plate (65) is set inside the square slot (63), and one end of the oil outlet sloping plate (65) passes through the square slot (63) and is set below the scraper (64). The other end of the oil outlet sloping plate (65) passes through the square slot (63) and is located outside the separator (1). A baffle (66) is symmetrically connected to both sides of the oil outlet sloping plate (65), and one side of the baffle (66) is connected to the separator (1). A stepper motor is connected to the front of the separation box (1) by a positioning bolt, and the output shaft of the stepper motor passes through the separation box (1) and is connected to the rotating roller (62) located above; the conveyor belt (61) is made of oleophilic and hydrophobic material.

5. The oil-water separation device according to claim 1, characterized in that: The oil guiding module (7) also includes an isolation plate (74), a round hole (75) and an electric telescopic rod (76). The isolation plate (74) is located below the coalescing metal sintered mesh (2), and the outer wall of the isolation plate (74) is slidably fitted with the inner wall of the separation box (1). The round hole (75) is opened at the top of the isolation plate (74), and the bottom end of the round hole (75) penetrates the isolation plate (74). The electric telescopic rod (76) is connected to the middle of the bottom surface of the inner cavity of the separation box (1), and the top end of the output end of the electric telescopic rod (76) is connected to the middle of the bottom surface of the isolation plate (74).

6. The oil-water separation device according to claim 5, characterized in that: The oil guiding module (7) also includes a water outlet pipe (77), a water flow sensor (78), and a first-stage solenoid valve (79). The top of the water outlet pipe (77) is located inside the round hole (75), and the outer wall of the water outlet pipe (77) is connected to the isolation plate (74). The bottom of the water outlet pipe (77) passes through the round hole (75) and the separation box (1), and the outer wall of the water outlet pipe (77) and the separation box (1) are in sliding fit. The water flow sensor (78) is located at the top inside the water outlet pipe (77), and the first-stage solenoid valve (79) is located on the water outlet pipe (77), and the first-stage solenoid valve (79) is located at the bottom of the isolation plate (74).

7. The oil-water separation device according to claim 1, characterized in that: The oil guiding module (7) further includes a sliding groove (710), a sliding plate (711), an embedding groove (712), a hydrophilic and oleophobic plate (713), an equipment groove (714), a pressure sensor (715), a limiting groove (716), a limiting plate (717), an outlet pipe (718), and a secondary solenoid valve (719). The sliding groove (710) is located on the inner wall of the oil guiding cover (71), the sliding plate (711) is slidably fitted into the sliding groove (710), the embedding groove (712) is located on one side of the sliding plate (711), the hydrophilic and oleophobic plate (713) is embedded in the embedding groove (712), and the equipment groove (714) is located on one side of the bottom surface of the inner cavity of the oil guiding cover (71). The top of the equipment slot (714) is connected to the sliding slot (710). The pressure sensor (715) is located in the middle of the equipment slot (714), and the upper and lower ends of the pressure sensor (715) are connected to the sliding plate (711) and the oil guide cover (71) respectively. The limiting slot (716) is opened on one side of the oil guide cover (71), and the limiting plate (717) is located on one side of the oil guide cover (71). The limiting plate (717) has a T-shaped structure, and the tail end of the limiting plate (717) passes through the limiting slot (716) and is connected to the sliding plate (711). The outlet pipe (718) is connected to the bottom end of the oil guide cover (71) on the side away from the separation box (1). The secondary solenoid valve (719) is located on the outlet pipe (718).

8. The oil-water separation device according to claim 1, characterized in that: The oil guiding module (7) also includes a mounting plate (720), an internal chamber (721), a contact switch (722), a top plate (723), a connecting rod (724), and a float (725). The mounting plate (720) is connected to the rear side of the inner cavity of the separation box (1), and the mounting plate (720) is located above the coalescing metal sintered mesh (2). The internal chamber (721) is opened inside the mounting plate (720). The contact switch (722) and the top plate (723) are both located inside. Inside the chamber (721), the contact switch (722) is located above the top plate (723). The top of the contact switch (722) is connected to the mounting plate (720). The outer wall of the top plate (723) is slidably fitted with the mounting plate (720). The float (725) is located below the mounting plate (720). The connecting rod (724) is connected to the middle of the bottom of the top plate (723). The bottom end of the connecting rod (724) passes through the mounting plate (720) and is connected to the middle of the top surface of the float (725).

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