Oil-water separation device with separation membrane convenient to replace

Abstract

The utility model discloses an oil-water separation device convenient to replace a separation membrane, which relates to the field of oil-water separation and comprises an oil-water separation container, a deposition separation chamber, a corrugated coalescence chamber and a fiber polymerization chamber are independently arranged in the oil-water separation container, an oil collection chamber is formed in the deposition separation chamber, and one side of the top of the oil collection chamber is communicated with the deposition separation chamber. One side of the oil-water separation container is connected with a water inlet pipe, one end of the water inlet pipe extends into the filtering roller, the bottom of the deposition separation chamber is connected with a corrugated coalescence chamber through a first valve pipeline, a corrugated plate coalescer is arranged in the corrugated coalescence chamber, a first oil collecting chamber is arranged on one side of the corrugated coalescence chamber, and one side of the top of the corrugated coalescence chamber is communicated with the first oil collecting chamber. The bottom of the corrugated coalescence chamber is connected with a fiber polymerization chamber through a second valve pipeline, a fiber polymerizer is arranged in the fiber polymerization chamber, and a second oil collection chamber is arranged on one side of the fiber polymerization chamber, so that the oil-water separation effect is improved, and small oil drops in sewage can be separated.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-water separators, in particular to an oil-water separator which is convenient for replacing a separation membrane. Background Art

[0002] The forms of oil in water generally include floating oil (>100μm), dispersed oil (10~100μm), emulsified oil (<10μm), dissolved oil (several microns) and solid attached oil. The floating of oil in water is directly related to its size: the larger the oil droplet size, the faster the floating speed, and the more conducive to the separation of oil and water. Therefore, the size of the oil droplets is very important for the separation effect of the oil-water separator.

[0003] Oil-water separation technology has a long history, mainly including gravity separation, centrifugal separation, electrical separation, adsorption separation and flotation separation. Among them, the gravity (unpowered) oil-water method has the advantages of simple structure, easy operation, stable oil removal effect, no consumption of reagents, no secondary pollution, low operation and maintenance costs, and has been widely used. However, the gravity separation method can only effectively remove the floating oil and dispersed oil in the oily wastewater, which are larger oil droplets, and has basically no effect on the removal of dissolved oil and emulsified oil. The application of coalescence technology in oil-water separation, while giving full play to the advantages of gravity oil-water separation, has well solved its shortcomings, and has therefore been more widely used. However, most of the current devices have a short operating cycle, and cannot effectively remove oil from wastewater with small oil droplets, resulting in unsatisfactory oil removal effects, which need to be further improved; secondly, the current replacement of the separation membrane is difficult, and it needs to be replaced step by step, and the target separation membrane cannot be directly replaced. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an oil-water separation device which is convenient for replacing a separation membrane, so as to solve the deficiencies of the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions: an oil-water separation device that is easy to replace a separation membrane, comprising an oil-water separation container, wherein a sedimentation separation chamber, a corrugated coalescence chamber and a fiber polymerization chamber are independently arranged in the oil-water separation container, a primary filtering mechanism is arranged in the sedimentation separation chamber, and the primary filtering mechanism comprises a mounting seat and a filter drum, wherein the mounting seat is fixed to the oil-water separation container, the filter drum is rotatably arranged on the mounting seat, and the filter drum is arranged obliquely, the sedimentation separation chamber is formed with an oil collecting chamber at the lower end of the filter drum, one side of the top of the oil collecting chamber is connected to the sedimentation separation chamber, a water inlet pipe is arranged on one side of the oil-water separation container, and the One end of the water inlet pipe extends into the filter drum, and the bottom of the sedimentation and separation chamber is connected to the corrugated coalescing chamber through a first valve pipeline, a corrugated plate coalescer is arranged in the corrugated coalescing chamber, a first oil collecting chamber is arranged on one side of the corrugated coalescing chamber, a first oil drain window is opened on one side of the top of the corrugated coalescing chamber, and the first oil drain window is connected to the first oil collecting chamber, and the bottom of the corrugated coalescing chamber is connected to the fiber polymerization chamber through a second valve pipeline, a fiber polymerizer is arranged in the fiber polymerization chamber, a second oil collecting chamber is arranged on one side of the fiber polymerization chamber, a second oil drain window is opened on one side of the top of the fiber polymerization chamber, and the second oil drain window is connected to the second oil collecting chamber.

[0006] Furthermore, the filter drum includes a rotating drum and filter strips. The rotating drum is rotatably mounted on the mounting seat. A plurality of filter strips are fixed to one end of the rotating drum away from the water inlet pipe. The plurality of filter strips are evenly distributed along the circumferential direction of the rotating drum, and a filter gap is formed between two adjacent filter strips.

[0007] Furthermore, a driven sprocket is mounted on the rotating cylinder, a main shaft is rotatably arranged in the sedimentation and separation chamber, a driving sprocket is mounted on the main shaft, the driving sprocket is connected to the driven sprocket via a chain transmission, a motor is provided on the side wall of the oil-water separation container, and an output shaft of the motor is connected to the main shaft via a coupling.

[0008] Furthermore, a backwash chamber is provided in the oil-water separation container, the backwash chamber is connected to a clean water pipe, a drain pipe is provided on the oil-water separation container, the drain pipe and the clean water pipe are both connected to the fiber polymerization chamber, the backwash chamber is connected to a backwash pipe, a flushing pipe is provided above the filter drum, the flushing pipe is coaxially arranged with the filter drum, a plurality of flushing nozzles are installed at the bottom of the flushing pipe along its own axial direction, and one end of the flushing pipe is connected to the backwashing pipe.

[0009] Furthermore, a backwash assembly is provided below the corrugated plate agglomerator and the fiber agglomerator, and the backwash assembly includes a plurality of backwash pipes, and the plurality of backwash pipes are arranged at intervals in a horizontal direction, and a plurality of high-pressure nozzles are installed on the top of the backwash pipe along its own axial direction, and the backwash pipe is connected to the backwash pipeline through a backwash branch pipe.

[0010] Furthermore, an annular mounting platform is fixed in the fiber polymerization chamber, the annular mounting platform is located above the fiber aggregator, and a fine filter plate is mounted on the annular mounting platform by screws.

[0011] Furthermore, maintenance windows are provided on the side walls of the corrugated coalescing chamber and the side walls of the fiber polymerization chamber, a removable baffle is provided in the maintenance window, the removable baffle is connected to the oil-water separation container by screws, an annular sealing step is formed on the inner wall of the maintenance window, a sealing ring is provided on the end face of the annular sealing step close to the removable baffle, a sealing pressure plate is fixed on the removable baffle, and the sealing pressure plate abuts against the sealing ring.

[0012] Furthermore, a filter plate is obliquely installed in the oil collecting chamber, the bottom end of the filter plate is arranged close to the outer wall of the oil-water separation container, the side wall of the oil-water separation container is connected to a negative pressure drain pipe, and the suction port of the negative pressure drain pipe is arranged close to the bottom end of the filter plate.

[0013] Furthermore, an inclined annular platform is fixed in the oil collecting chamber, and the filter plate is mounted on the inclined annular platform by screws.

[0014] Furthermore, the oil collecting chamber, the first oil collecting chamber and the second oil collecting chamber are all connected with a sewage pipe.

[0015] The beneficial effects of the utility model are:

[0016] 1. Impurities are separated from oil and water through the filter drum. Large oil droplets float on the water surface and overflow into the oil collecting chamber. Sewage containing small oil droplets enters the corrugated coalescing chamber and is aggregated into larger oil droplets through the corrugated plate coalescer and overflows into the first oil collecting chamber. Oil droplets containing smaller particles enter the fiber polymerization chamber and are aggregated into larger oil droplets through the fiber aggregator and overflow into the second oil collecting chamber, which improves the oil-water separation effect and can effectively separate small oil droplets in sewage.

[0017] 2. The corrugated plate agglomerator and the fiber agglomerator can be directly replaced without disassembling them step by step from top to bottom. The operation is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the internal structure of an oil-water separation device that is convenient for replacing separation membranes according to the utility model;

[0019] Figure 2 A three-dimensional schematic diagram of an oil-water separation device that is easy to replace the separation membrane according to the utility model Figure 1 ;

[0020] Figure 3 A three-dimensional schematic diagram of an oil-water separation device that is easy to replace the separation membrane according to the utility model Figure 2 ;

[0021] Figure 4 This is a schematic structural diagram of a detachable baffle in an oil-water separation device for facilitating replacement of a separation membrane according to the utility model;

[0022] In the figure, 1-oil-water separation container, 2-sedimentation separation chamber, 3-corrugated coalescing chamber, 4-fiber polymerization chamber, 5-mounting seat, 6-filter drum, 7-oil collecting chamber, 8-water inlet pipe, 9-first valve pipeline, 10-corrugated plate coalescer, 11-first oil collecting chamber, 12-first oil discharge window, 13-second valve pipeline, 14-fiber polymerizer, 15-second oil collecting chamber, 16-second oil discharge window, 17-rotating cylinder, 18-filter strip, 19-driven sprocket, 20- Spindle, 21-driving sprocket, 22-motor, 23-backwash chamber, 24-backwash pipe, 25-drain pipe, 26-clean water pipe, 27-flushing pipe, 28-flushing nozzle, 29-backwash pipe, 30-high-pressure nozzle, 31-annular mounting table, 32-fine filter plate, 33-maintenance window, 34-removable baffle, 35-annular sealing step, 36-sealing ring, 37-sealing pressure plate, 38-filter plate, 39-negative pressure sewage pipe, 40-inclined annular table. DETAILED DESCRIPTION

[0023] Embodiment 1

[0024] like Figures 1 to 4As shown, an oil-water separation device which is convenient for replacing separation membranes comprises an oil-water separation container 1, wherein a sedimentation separation chamber 2, a corrugated coalescing chamber 3 and a fiber polymerization chamber 4 are independently arranged in the oil-water separation container 1, a primary filtering mechanism is arranged in the sedimentation separation chamber 2, and the primary filtering mechanism comprises a mounting seat 5 and a filter drum 6, the mounting seat 5 is fixed to the oil-water separation container 1, the filter drum 6 is rotatably arranged on the mounting seat 5, and the filter drum 6 is arranged obliquely, the sedimentation separation chamber 2 is formed with an oil collecting chamber 7 at the lower end of the filter drum 6, one side of the top of the oil collecting chamber 7 is connected to the sedimentation separation chamber 2, a water inlet pipe 8 is arranged on one side of the oil-water separation container 1, one end of the water inlet pipe 8 extends into the filter drum 6, the bottom of the sedimentation separation chamber 2 is connected to the corrugated coalescing chamber 3 through a first valve pipeline 9, and the corrugated coalescing chamber 3 is connected to the filter drum 6. A corrugated plate agglomerator 10 is arranged in the corrugated agglomeration chamber 3, a first oil collecting chamber 11 is arranged on one side of the corrugated agglomeration chamber 3, a first oil discharge window 12 is opened on one side of the top of the corrugated agglomeration chamber 3, the first oil discharge window 12 is connected to the first oil collecting chamber 11, the bottom of the corrugated agglomeration chamber 3 is connected to the fiber polymerization chamber 4 through a second valve pipeline 13, a fiber agglomerator 14 is arranged in the fiber polymerization chamber 4, a second oil collecting chamber 15 is arranged on one side of the fiber polymerization chamber 4, a second oil discharge window 16 is opened on one side of the top of the fiber polymerization chamber 4, the second oil discharge window 16 is connected to the second oil collecting chamber 15, sewage carrying impurities is introduced into the filter drum 6 through the water inlet pipe 8, the sewage is filtered by the filter drum 6, the impurities are retained in the filter drum 6, and the sewage passes through the filter drum 6. After entering the sedimentation separation chamber 2, due to the inclined setting of the filter drum 6 and the rotating installation of the filter drum 6, the filter drum 6 drives the impurities therein to move closer to the oil collecting chamber 7, so that the filtered impurities fall into the oil collecting chamber 7, and the sewage is stratified in the sedimentation separation chamber 2, so that large particles of oil droplets float to the water surface. As the height of the sewage gradually increases, the oil droplets on the surface of the sewage overflow into the oil collecting chamber 7. Then, the first valve pipeline 9 is opened to pass the sewage in the sedimentation separation chamber 2 into the corrugated coalescing chamber 3. The water inlet amount of the water inlet pipe 8 is balanced with the discharge amount of the first valve pipeline 9 to maintain the liquid level in the sedimentation separation chamber 2, so that the large particles of oil droplets float on the water surface and overflow into the oil collecting chamber 7, and the corrugated plate coalescer 10 in the corrugated coalescing chamber 3 aggregates the small oil droplets. , so that large oil droplets are formed and float on the water surface. As the liquid level in the corrugated coalescing chamber 3 rises, the oil floating on the water surface overflows into the first oil collecting chamber 11. The second valve pipeline 13 is opened to allow the sewage in the corrugated coalescing chamber 3 to enter the fiber polymerization chamber 4. The water intake and discharge volume of the corrugated coalescing chamber 3 are balanced, and the liquid level in the corrugated coalescing chamber 3 is maintained, so that the small oil droplets can overflow into the first oil collecting chamber 11 after polymerization, and the oil droplets containing smaller particles enter the fiber polymerization chamber 4. The small oil droplets are aggregated into larger oil droplets through the fiber aggregator 14 and overflow into the second oil collecting chamber 15. The fiber polymerization chamber 4 is connected to a drain pipe 25, and the sewage is discharged to the next treatment station through the drain pipe 25, which improves the oil-water separation effect and can effectively separate the fine oil droplets in the sewage.

[0025] Furthermore, the oil collecting chamber 7, the first oil collecting chamber 11 and the second oil collecting chamber 15 are all connected with drain pipes, through which the oil is discharged.

[0026] Embodiment 2

[0027] Based on the first embodiment, Figure 1 As shown, an annular mounting platform 31 is fixed in the fiber polymerization chamber 4, and the annular mounting platform 31 is located above the fiber aggregator 14. A fine filter plate 32 is installed on the annular mounting platform 31 by screws. The sewage in the fiber polymerization chamber 4 is first filtered through the fine filter plate 32 to remove fine impurities in the sewage, thereby avoiding clogging of the fiber aggregator 14 and extending the service life of the fiber aggregator 14.

[0028] Furthermore, if Figures 1 to 4 As shown, the side wall of the corrugated coalescing chamber 3 and the side wall of the fiber polymerization chamber 4 are both provided with a maintenance window 33, a removable baffle 34 is arranged in the maintenance window 33, the removable baffle 34 is connected to the oil-water separation container 1 by screws, an annular sealing step 35 is formed on the inner wall of the maintenance window 33, and a sealing ring 36 is arranged on the end face of the annular sealing step 35 close to the removable baffle 34, a sealing pressing plate 37 is fixed on the removable baffle 34, and the sealing pressing plate 37 abuts on the sealing ring 36, and the corrugated plate coalescer 10 inside can be opened by removing the removable baffle 34 on the corrugated coalescing chamber 3. Maintenance or replacement. Similarly, by removing the removable baffle 34 on the fiber polymerization chamber 4, the fine filter plate 32 and the fiber aggregator 14 therein can be maintained or replaced, which is convenient for later maintenance. There is no need to disassemble them step by step from top to bottom. The corrugated plate aggregator 10 and the fiber aggregator 14 can be directly replaced, and the operation is simple and quick; secondly, through the interference fit between the sealing pressure plate 37 and the sealing ring 36, a high-strength sealing surface is formed between the sealing ring 36 and the sealing pressure plate 37, thereby improving the sealing effect of the maintenance window 33 and preventing sewage overflow.

[0029] Embodiment 3

[0030] Based on the second embodiment, Figure 1As shown, the filter drum 6 includes a rotating drum 17 and filter strips 18. The rotating drum 17 is rotatably mounted on the mounting seat 5. A plurality of filter strips 18 are fixed to one end of the rotating drum 17 away from the water inlet pipe 8. The plurality of filter strips 18 are evenly distributed along the circumferential direction of the rotating drum 17. A filter gap is formed between two adjacent filter strips 18. A driven sprocket 19 is mounted on the rotating drum 17. A main shaft 20 is rotatably arranged in the sedimentation separation chamber 2. A driving sprocket 21 is mounted on the main shaft 20. The driving sprocket 21 is connected to the driven sprocket 19 through a chain transmission. A motor 22 is provided on the side wall of the oil-water separation container 1. The output shaft of the motor 22 is connected to the main shaft 20 through a coupling. The main shaft 20 is driven to rotate by the motor 22. The main shaft 20 drives the driving sprocket 21 to rotate. The driving sprocket 21 drives the driven sprocket 19 to rotate through the chain. The driven sprocket 19 drives the rotating drum 17 to rotate, thereby driving the entire filter drum 6 to rotate, so that the impurities in the filter drum 6 move, and the impurities fall into the oil collecting chamber 7, so as to realize the solid-liquid separation of sewage.

[0031] Embodiment 4

[0032] Based on the third embodiment, Figure 1 As shown, a filter plate 38 is obliquely installed in the oil collecting chamber 7, and the bottom end of the filter plate 38 is arranged near the outer wall of the oil-water separation container 1. A negative pressure drain pipe 39 is connected to the side wall of the oil-water separation container 1, and the suction port of the negative pressure drain pipe 39 is arranged near the bottom end of the filter plate 38. A filter plate 38 is arranged in the oil collecting chamber 7, and the solid waste filtered by the filter drum 6 falls into the filter plate 38. The oil passes through the filter plate 38 and is collected in the oil collecting chamber 7. The solid-liquid separation is achieved by the filter plate 38, and the solid waste on the filter plate 38 is regularly discharged through the negative pressure drain pipe 39. Secondly, an inclined annular platform 40 is fixed in the oil collecting chamber 7, and the filter plate 38 is installed on the inclined annular platform 40 by screws. A maintenance window is opened on the side wall of the oil collecting chamber 7, and is blocked and sealed by a removable baffle 34. The filter plate 38 is detachably connected by screws, and the filter plate 38 can be cleaned, maintained and replaced through the maintenance window.

[0033] Embodiment 5

[0034] Based on the fourth embodiment, Figures 1 to 3As shown, a backwash chamber 23 is provided in the oil-water separation container 1, and the backwash chamber 23 is connected to a clean water pipe 26. A drain pipe 25 is provided on the oil-water separation container 1, and the drain pipe 25 and the clean water pipe 26 are both connected to the fiber polymerization chamber 4. The backwash chamber 23 is connected to a backwash pipe 24. A flushing pipe 27 is provided above the filter drum 6. The flushing pipe 27 is coaxially arranged with the filter drum 6. A plurality of flushing nozzles 28 are installed at the bottom of the flushing pipe 27 along its own axial direction. One end of the flushing pipe 27 is connected to the backwashing pipe 24. The sewage in the fiber polymerization chamber 4 is discharged to the next treatment station through the drainage pipe 25, and the clean water pipe 26 collects part of the sewage in the fiber polymerization chamber 4 in the backwashing chamber 23 for backwashing. When the filter drum 6 needs to be flushed, the water pump on the backwashing pipe 24 is turned on, and the water in the backwashing chamber 23 is passed into the flushing pipe 27, and then the water is pressurized and sprayed onto the filter drum 6 through the flushing nozzle 28. In conjunction with the rotation of the filter drum 6, the filter drum 6 can be fully flushed to avoid clogging of the filter drum 6.

[0035] Furthermore, if Figure 1 As shown, a backwashing assembly is provided below the corrugated plate agglomerator 10 and the fiber agglomerator 14, and the backwashing assembly includes a plurality of backwashing pipes 29, and the plurality of backwashing pipes 29 are arranged at intervals in the horizontal direction, and a plurality of high-pressure nozzles 30 are installed on the top of the backwashing pipes 29 along their own axial direction, and the backwashing pipes 29 are connected to the backwashing pipe 24 through backwashing branches. Similarly, the corrugated plate agglomerator 10 and the fiber agglomerator 14 are both equipped with the same backwashing assembly, and when the filter drum 6 is backwashed, the corrugated plate agglomerator 10 and the fiber agglomerator 14 are backwashed synchronously, and the backwashing and cleaning of the corrugated plate agglomerator 10 and the fiber agglomerator 14 are completed by spraying high-pressure water through the high-pressure nozzles 30.

Claims

1. An oil-water separation device for facilitating replacement of a separation membrane, comprising an oil-water separation container (1), characterized in that: The oil-water separation container (1) is independently provided with a sedimentation separation chamber (2), a corrugated coalescence chamber (3) and a fiber polymerization chamber (4); the sedimentation separation chamber (2) is provided with a primary filtering mechanism, the primary filtering mechanism comprising a mounting seat (5) and a filter drum (6); the mounting seat (5) is fixed to the oil-water separation container (1); the filter drum (6) is rotatably mounted on the mounting seat (5), and the filter drum (6) is tilted; the sedimentation separation chamber (2) is provided with an oil collecting chamber (7) at the lower end of the filter drum (6); one side of the top of the oil collecting chamber (7) is connected to the sedimentation separation chamber (2); a water inlet pipe (8) is provided on one side of the oil-water separation container (1); one end of the water inlet pipe (8) extends into the filter drum (6); the bottom of the sedimentation separation chamber (2) is connected to the filter drum (6); The corrugated coalescing chamber (3) is connected via a first valve pipeline (9), a corrugated plate coalescer (10) is arranged in the corrugated coalescing chamber (3), a first oil collecting chamber (11) is arranged on one side of the corrugated coalescing chamber (3), a first oil discharge window (12) is opened on one side of the top of the corrugated coalescing chamber (3), the first oil discharge window (12) is connected to the first oil collecting chamber (11), the bottom of the corrugated coalescing chamber (3) is connected to the fiber polymerization chamber (4) via a second valve pipeline (13), a fiber polymerizer (14) is arranged in the fiber polymerization chamber (4), a second oil collecting chamber (15) is arranged on one side of the fiber polymerization chamber (4), a second oil discharge window (16) is opened on one side of the top of the fiber polymerization chamber (4), the second oil discharge window (16) is connected to the second oil collecting chamber (15).

2. The oil-water separation device for easy replacement of separation membrane according to claim 1, characterized in that: The filter drum (6) comprises a rotating drum (17) and filter strips (18); the rotating drum (17) is rotatably mounted on the mounting seat (5); a plurality of filter strips (18) are fixed to one end of the rotating drum (17) away from the water inlet pipe (8); the plurality of filter strips (18) are evenly distributed along the circumferential direction of the rotating drum (17), and a filter gap is formed between two adjacent filter strips (18).

3. The oil-water separation device for easy replacement of separation membrane according to claim 2, characterized in that: A driven sprocket (19) is mounted on the rotating cylinder (17), a main shaft (20) is rotatably arranged in the sedimentation separation chamber (2), a driving sprocket (21) is mounted on the main shaft (20), the driving sprocket (21) is connected to the driven sprocket (19) via a chain transmission, and a motor (22) is provided on the side wall of the oil-water separation container (1), the output shaft of the motor (22) is connected to the main shaft (20) via a coupling.

4. The oil-water separation device for easy replacement of separation membrane according to claim 1, characterized in that: A backwash chamber (23) is provided in the oil-water separation container (1), and the backwash chamber (23) is connected to a clean water pipe (26). A drain pipe (25) is provided on the oil-water separation container (1), and the drain pipe (25) and the clean water pipe (26) are both connected to the fiber polymerization chamber (4). The backwash chamber (23) is connected to a backwash pipe (24). A flushing pipe (27) is provided above the filter drum (6), and the flushing pipe (27) is coaxially arranged with the filter drum (6). A plurality of flushing nozzles (28) are installed at the bottom of the flushing pipe (27) along its own axial direction, and one end of the flushing pipe (27) is connected to the backwashing pipe (24).

5. The oil-water separation device for easy replacement of separation membrane according to claim 4, characterized in that: A backwash assembly is provided below the corrugated plate agglomerator (10) and below the fiber agglomerator (14), and the backwash assembly includes a plurality of backwash pipes (29), the plurality of backwash pipes (29) are arranged at intervals in the horizontal direction, a plurality of high-pressure nozzles (30) are installed at the top of the backwash pipe (29) along its own axial direction, and the backwash pipe (29) is connected to the backwash pipeline (24) through a backwash branch pipe.

6. The oil-water separation device for easy replacement of separation membrane according to claim 1, characterized in that: An annular mounting platform (31) is fixed in the fiber polymerization chamber (4), the annular mounting platform (31) is located above the fiber aggregator (14), and a fine filter plate (32) is mounted on the annular mounting platform (31) by means of screws.

7. The oil-water separation device for easy replacement of separation membrane according to claim 6, characterized in that: The side wall of the corrugated coalescence chamber (3) and the side wall of the fiber polymerization chamber (4) are both provided with maintenance windows (33), a removable baffle (34) is arranged in the maintenance window (33), the removable baffle (34) is connected to the oil-water separation container (1) by screws, an annular sealing step (35) is formed on the inner wall of the maintenance window (33), a sealing ring (36) is arranged on the end face of the annular sealing step (35) close to the removable baffle (34), a sealing pressure plate (37) is fixed on the removable baffle (34), and the sealing pressure plate (37) abuts against the sealing ring (36).

8. The oil-water separation device with easy replacement of separation membrane according to claim 1, characterized in that: A filter plate (38) is obliquely installed in the oil collecting chamber (7), the bottom end of the filter plate (38) is arranged close to the outer wall of the oil-water separation container (1), the side wall of the oil-water separation container (1) is connected to a negative pressure sewage discharge pipe (39), and the suction port of the negative pressure sewage discharge pipe (39) is arranged close to the bottom end of the filter plate (38).

9. The oil-water separation device for easy replacement of separation membrane according to claim 8, characterized in that: An inclined annular platform (40) is fixed in the oil collecting chamber (7), and the filter plate (38) is mounted on the inclined annular platform (40) by means of screws.

10. The oil-water separation device with easy replacement of separation membrane according to claim 1, characterized in that: The oil collecting chamber (7), the first oil collecting chamber (11) and the second oil collecting chamber (15) are all connected to a sewage discharge pipe.

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