Oil-water separator

Abstract

The invention relates to the technical field of filters, and particularly discloses an oil-water separator which comprises a settling tank, the interior of the settling tank is divided into an upper cavity and a lower cavity through a first partition plate, the upper cavity and the lower cavity are a separation total cavity and a water storage cavity respectively, and the interior of the separation total cavity is divided into a left cavity and a right cavity through a second partition plate; the cleaning mechanism comprises a washing rod rotationally installed on the lower end face of the filter cylinder and a baffle rotationally installed in the filter cylinder in the axis direction of the filter cylinder, and the front side face of the washing rod exceeds the front side face of the baffle. A plurality of upward water spraying holes are formed in the flushing rod and are communicated with the water storage cavity; the oil recovery device has the beneficial effects that oil in impurities can be recovered while the filter screen is cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and particularly to an oil-water separator. Background Art

[0002] In the process of carbon black production, the pretreatment of raw oil is a key step. The main purpose is to remove impurities and harmful substances in the raw oil, and improve the quality and performance of carbon black. The raw oil is first heated to an appropriate temperature, usually around 70 - 80 °C, to reduce its viscosity. Then the heated raw oil passes through a filter to remove solid impurities such as sediment and rust. After that, the filtered raw oil is introduced into a settling tank for static settlement. After the oil-water separation, the finally treated raw oil is used for carbon black production.

[0003] The Chinese patent document with the publication number of CN117482579B discloses an oil-water separator for methanol production, which includes an oil storage tank. The interior of the oil storage tank is divided into two parts by a partition cylinder. Among them, the inside of the partition cylinder is a water storage chamber. An oil-water mixing box is provided at the upper part of the oil storage tank. A floating oil layer collection component is provided in the oil-water mixing box. An oil layer siphon is provided on the oil-water mixing box. The floating oil layer collection component and the oil storage tank are connected together through the oil layer siphon. A compensation type water layer automatic separation component is provided on the inner bottom wall of the oil-water mixing box. During operation, first, the raw oil is introduced into the oil-water mixing box. After standing for a period of time until the oil-water separation, the upper light oil enters the oil storage tank through the oil layer siphon and passes through the floating oil layer collection component. When the light oil is discharged, the lower water enters the water storage chamber through the compensation type water layer automatic separation component.

[0004] In the above technology, when introducing the raw oil into the oil-water mixing box, the raw oil needs to be filtered first. And the solid impurities after filtration contain part of the oil-water mixture. In the prior art, the impurities on the filter mesh are not easy to clean, and at the same time, the oil in the impurities is not easy to recover. Summary of the Invention

[0005] The present invention provides an oil-water separator, aiming to solve the technical problems that the impurities on the filter mesh in the related technology are not easy to clean, and at the same time, the oil in the impurities is not easy to recover.

[0006] An oil-water separator includes a settling tank. The interior of the settling tank is divided into two upper and lower chambers by a first partition, namely a separation total chamber and a water storage chamber. The separation total chamber is divided into left and right chambers by a second partition; A sector-shaped filter cartridge, which is rotatably installed on the second partition around its axis direction. The upper end of the filter cartridge is open, and the bottom surface is a filter mesh; Cleaning mechanism, the cleaning mechanism includes a flushing rod rotatably installed on the lower end face of the filter cartridge and a baffle rotatably installed in the filter cartridge along the axis direction of the filter cartridge. The front side of the flushing rod extends beyond the front side of the baffle. A plurality of upwardly facing water spray holes are provided on the flushing rod, and the water spray holes communicate with the water storage cavity. In the initial state, when the filter screen rotates from the left chamber to the right chamber, the water spray holes flush water into the filter cartridge from the front side of the baffle. At the same time, the flushing rod and the baffle move from one end of the filter screen to the other end. At this time, an upper-opening cavity is formed between the flushing rod, the baffle and the inner side wall of the filter cartridge. At the same time, the flushing rod and the baffle swing reciprocally to change the volume of the cavity. Finally, the flushing rod is completely separated from the front end plate of the filter cartridge, so that the liquid in the cavity is discharged.

[0007] The effect is that by using the water separated from the raw material oil to flush the impurities and then statically separating the water that has flushed the impurities again, the oil in the impurities can be recovered.

[0008] Preferably, a second motor is provided on the flushing rod. An arc-shaped track groove is opened on the second partition plate. The arc-shaped track groove is coaxial with the filter cartridge. An arc-shaped rack is provided in the track groove. The output end of the second motor is connected to a gear that meshes with the arc-shaped rack.

[0009] Preferably, a rotating shaft coaxial with the filter cartridge is rotatably installed on the second partition plate, and the filter cartridge is installed on the rotating shaft. An arc-shaped through hole that penetrates up and down and is coaxial with the rotating shaft is opened on the rotating shaft. A connecting rod is rotatably installed in the arc-shaped through hole along the axis direction of the through hole. The upper end of the connecting rod is connected to the baffle, and a clutch assembly is provided at the lower end of the connecting rod. When the filter screen rotates from the first separation chamber to the second separation chamber, the clutch assembly connects the flushing rod and the connecting rod. When the filter screen rotates from the second separation chamber to the first separation chamber, the clutch assembly connects the connecting rod and the filter cartridge.

[0010] Preferably, the clutch assembly includes an elastic telescopic block one provided at the portion of the connecting rod in contact with the filter cartridge and an elastic telescopic block two provided at the portion of the connecting rod in contact with the flushing rod. A groove one matching the elastic telescopic block one is opened on the filter cartridge, and a groove two matching the elastic telescopic block two is opened on the flushing rod. And the expansion and contraction resistance of the elastic telescopic block two is greater than that of the elastic telescopic block one.

[0011] Preferably, a slag discharging mechanism is further provided in the filter cartridge. The slag discharging mechanism includes a slag discharging port opened at the rear side of the front end plate of the filter cartridge and a sealing component for sealing the slag discharging port. When the impurities are flushed, the sealing component is opened, and the baffle pushes the impurities into the slag discharging port.

[0012] Preferably, the sealing component includes a sealing plate rotatably installed in the filter cartridge along the axis direction of the filter cartridge and a convex block provided in front of the baffle. An elastic member one is provided between the sealing plate and the front end plate of the filter cartridge to make the sealing plate located at the rear side of the slag discharging port.

[0013] Its effect is that by pushing the sealing plate with the baffle plate, the slag discharge port is opened.

[0014] Preferably, a blind hole with an opening facing forward is formed on the front side of the baffle plate. The convex block is slidably installed in the blind hole. An elastic member II for protruding the convex block from the front of the baffle plate is arranged in the blind hole. A plurality of air outlet holes communicating with the blind hole are formed on one side of the convex block close to the sealing plate. An air inlet hole is formed on the baffle plate. A one-way valve I for allowing gas to enter the baffle plate is arranged in the air inlet hole. A one-way valve II for discharging the gas in the blind hole is arranged in the air outlet hole. When flushing the impurities, the convex block is reciprocally contracted and extended in the baffle plate under the extrusion of the sealing plate and the pushing of the elastic member II.

[0015] Its effect is that by the reciprocating expansion and contraction of the convex block in the baffle plate, the gas in the air cavity formed between the blind hole and the convex block is discharged into the impurities, thereby improving the flushing effect on the impurities.

[0016] Preferably, a slag discharge groove communicating with the outside of the settling tank is formed on the second partition plate. When the filter screen rotates from the first separation cavity to the second separation cavity, the slag discharge port is located above the slag discharge groove.

[0017] Its effect is that it is convenient to discharge the impurities from the filter cylinder.

[0018] Preferably, there are two filter cylinders, and the two filter cylinders are arranged in a circumferential array around the rotating shaft.

[0019] Its effect is that the usage frequency of a single filter cylinder is reduced, and thus the time for replacing the filter cylinder is reduced.

[0020] Adopting the above technical solutions, the beneficial effects of the present invention are as follows: By setting the filter cylinder, the impurities in the raw material oil can be filtered out. By using the water separated from the raw material oil to flush the impurities, and setting the right separation cavity to statically settle the water that has flushed the impurities, and then performing oil-water separation again through the post-treatment device, the raw material oil in the impurities can be recovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the second partition plate of the present invention.

[0023] Figure 3 It is an exploded view of the parts of the pre-treatment device of the present invention.

[0024] Figure 4 It is a schematic diagram of the structure of the filter cylinder of the present invention.

[0025] Figure 5 It is a schematic diagram of the structure of the baffle plate and the flushing rod of the present invention.

[0026] Figure 6 This is the front view of the baffle of the present invention.

[0027] Figure 7 This is the cross-sectional view of the baffle of the present invention.

[0028] Figure 8 This is the schematic structural diagram of the flushing rod of the present invention.

[0029] Reference numerals: 1. Settling tank; 11. Second partition board; 12. Boss; 13. Track groove; 14. Arc rack; 15. Slag discharge groove; 2. Oil inlet pipe; 3. Pretreatment device; 31. Filter cartridge; 311. Front end plate; 312. Rear end plate; 313. Filter screen; 314. First groove; 32. Rotating shaft; 33. Cleaning mechanism; 331. Flushing rod; 3311. Water spraying groove; 3312. Pipeline; 3313. Second groove; 332. Baffle; 3321. Protrusion; 3322. Second compression spring; 3323. Air outlet hole; 3324. Air inlet hole; 334. Gear; 335. Connecting rod; 3351. First elastic telescopic block; 3352. Second elastic telescopic block; 34. Slag discharge mechanism; 341. Waste discharge port; 342. Sealing plate; 343. First compression spring. Detailed implementation manners

[0030] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0031] As Figure 1 and Figure 2 shown, an oil-water separator according to an embodiment of the present invention includes a settling tank 1, an oil inlet pipe 2, a pretreatment device 3 and two post-treatment devices (not shown in the figure). The inside of the settling tank 1 is divided into upper and lower chambers by a first partition board, which are a separation total chamber and a water storage chamber respectively. The separation total chamber is divided into left and right chambers by a second partition board 11. The two post-treatment devices are respectively installed in the left and right chambers and are used for introducing water into the water storage chamber after the raw oil has been left standing, and discharging the oil out of the settling tank 1 for further processing. The pretreatment device 3 is arranged on the second partition board 11 and is used for filtering the raw oil discharged from the oil inlet pipe 2 into the settling tank 1.

[0032] As Figures 2 - 4As shown in the figure, the pretreatment device 3 includes two filter cartridges 31, a rotating shaft 32, a cleaning mechanism 33, and a slag discharging mechanism 34. The rotating shaft 32 is rotatably installed on the second partition plate 11. The two filter cartridges 31 are fixedly installed on the rotating shaft 32, and the two filter cartridges 31 are arranged in a circumferential array around the rotating shaft 32. The filter cartridge 31 is composed of a sector frame coaxially fixed to the rotating shaft 32 and a sector filter screen 313 located on the lower end surface of the sector frame. The end plate at the front end of the sector frame is the front end plate 311, and the end plate at the rear end of the sector frame is the rear end plate 312. A first motor (not shown in the figure) is installed inside the second partition plate 11, and the output end of the first motor is connected to the rotating shaft 32. The cleaning mechanism 33 is used to clean the filter screen 313 to prevent the filter screen 313 from being blocked, and the slag discharging mechanism 34 is used to discharge the impurities in the filter cartridge 31 outside the filter cartridge 31.

[0033] As Figures 2 - 5 shown in the figure, the cleaning mechanism 33 includes a flushing rod 331 rotatably installed on the lower end surface of the filter cartridge 31 and two baffles 332 rotatably installed in the two filter cartridges 31 respectively along the axis direction of the filter cartridge 31. A convex platform 12 extending to the right is installed on the right side surface of the second partition plate 11. An arc-shaped track groove 13 coaxial with the filter cartridge 31 is opened on the convex platform 12. The opening of the arc-shaped track groove 13 faces upward. An arc-shaped slider adapted to the track groove 13 is installed on the flushing rod 331. The arc-shaped slider is slidably installed in the track groove 13 along the axis direction of the track groove 13. A second driving source for driving the arc-shaped slider to move in the track groove 13 is provided on the arc-shaped slider. The front side surface of the flushing rod 331 extends beyond the front side surface of the baffle 332. A water spraying groove 3311 penetrating upward is opened on the upper end surface of the part of the flushing rod 331 that extends beyond the front side surface of the baffle 332. The upper end surface of the water spraying groove 3311 abuts against the filter screen 313. A plurality of upward water spraying holes are installed in the water spraying groove 3311. A pipeline 3312 connecting the water spraying holes with the water storage cavity is installed on the flushing rod 331. A water pump (not shown in the figure) for pumping water into the water spraying holes is provided in the water storage cavity. A third driving source for driving the baffle 332 to rotate in the corresponding filter cartridge 31 is provided on the rotating shaft 32.

[0034] In the initial state, the two filter cartridges 31 are respectively located above the left and right chambers. After the filter cartridge 31 above the left chamber has filtered the raw oil and becomes a dirty filter cartridge 31, the motor drives the rotating shaft 32 to rotate 180°, so that the dirty filter cartridge 31 rotates from the left chamber to the right chamber, and the water spray hole flushes water into the filter cartridge 31 from the front side of the baffle 332. At the same time, the flushing rod 331 and the baffle 332 move from the rear end of the filter screen 313 to the front end of the filter screen 313. At this time, an upper opening cavity is formed between the flushing rod 331, the baffle 332 and the inner side wall of the fan-shaped frame. At the same time, the flushing rod 331 and the baffle 332 swing back and forth to change the volume of the cavity. When the front side surface of the flushing rod 331 coincides with the front end surface of the fan-shaped frame, due to the flushing The front side of the washing rod 331 exceeds the front side of the baffle 332, so the washing rod 331 blocks the filter 313 at the lower end of the cavity. At this time, the water spray holes in the water spray trough 3311 spray water upward, and the water passes through the filter 313 into the cavity to wash the impurities. When the washing rod moves backward so that the front side of the washing rod 331 is offset from the front end face of the fan-shaped frame, the washing rod 331 no longer blocks the filter 313 at the lower end of the cavity. At this time, the liquid passes through the filter 313 and is discharged from the cavity, and then the above process is repeated many times, so that the raw oil adhered to the surface of the impurities is flushed into the right chamber by water, and finally the slag discharge mechanism 34 discharges the cleaned impurities from the filter barrel, and the washing rod 331 and the baffle 332 move in the opposite direction to reset.

[0035] like Figure 3 , Figure 5 and Figure 8 As shown, driving source 2 includes motor 2 (not shown in the figure) installed on the flushing rod 331, an arc-shaped rack 14 is installed in the track groove 13, and a gear 334 meshing with the arc-shaped rack 14 is installed at the output end of motor 2. When the dirty filter cartridge 31 rotates from the left chamber to the right chamber, motor 2 drives the gear 334 to move along the arc-shaped rack 14, so that the flushing rod 331 moves from the rear end of the filter screen 313 on the dirty filter cartridge 31 to the front end of the filter screen 313.

[0036] like Figures 3 - 8As shown in the figure, the drive source three includes two "C"-shaped connecting rods 335 and two sets of clutch components respectively arranged on the two connecting rods 335. Two arc-shaped through holes that penetrate up and down and are coaxial with the rotating shaft 32 are formed on the rotating shaft 32. The two arc-shaped through holes are arranged in a circumferential array around the rotating shaft 32. The two filter cartridges 31 are respectively located outside the two arc-shaped through holes. The vertical sections of the two connecting rods 335 are respectively inserted into the two arc-shaped through holes. The horizontal rods at the upper ends of the two connecting rods 335 are respectively fixedly connected to the two baffle plates 332. The clutch component includes an elastic telescopic block one 3351 installed on the upper horizontal rod of the connecting rod 335 and an elastic telescopic block two 3352 installed on the lower horizontal rod of the connecting rod 335. A groove one 314 that cooperates with the elastic telescopic block one 3351 is formed upward on the upper end surface of the sector frame. A groove two 3313 that cooperates with the elastic telescopic block two 3352 is formed on the flushing rod 331. And the telescopic resistance of the elastic telescopic block two 3352 is greater than that of the elastic telescopic block one 3351.

[0037] After the dirty filter cartridge 31 rotates from the left chamber to the right chamber, the elastic telescopic block two 3352 on the connecting rod 335 of the dirty filter cartridge 31 is inserted into the groove two 3313 on the flushing rod 331. When the second motor drives the flushing rod 331 to move forward, the flushing rod 331 drives the connecting rod 335 to move through the elastic telescopic block two 3352 inserted into the groove two 3313, and then drives the baffle plate 332 to move forward in the dirty filter cartridge 31. At this time, the elastic telescopic block one 3351 on the connecting rod 335 is squeezed by the upper end surface of the sector frame and contracts into the connecting rod 335. After the slag discharging mechanism 34 discharges the impurities cleaned from the filter cartridge 31, the second motor drives the flushing rod 331 to reset. When the elastic telescopic block one 3351 gradually aligns with the groove one 314, the elastic telescopic block one 3351 gradually extends and gets stuck in the groove one 314. Then the first motor drives the rotating shaft 32 to rotate 180°. At this time, the rear end plate 312 of the sector frame pushes the baffle plate 332 to rotate forward, and the elastic telescopic block two 3352 is gradually squeezed by the flushing rod 331 and contracts into the connecting rod 335, thus disconnecting the connection between the connecting rod 335 and the flushing rod 331.

[0038] As Figure 3 and Figure 4 shown, the slag discharging mechanism 34 includes a slag discharging port 341 opened at the front end of the filter screen 313, a slag discharging groove 15 opened on the second partition 11 for communicating with the outside of the sedimentation tank 1, and a sealing component for sealing the slag discharging port 341. The slag discharging port 341 is located at the rear side of the front end surface of the sector frame. The sealing component is located at the rear side of the slag discharging port 341. After the impurities are flushed, the baffle plate 332 opens the sealing component and pushes the impurities into the slag discharging port 341.

[0039] As Figures 3 - 7As shown in the figure, the sealing assembly includes a sealing plate 342 rotatably installed in the filter cartridge 31 along the axial direction of the filter cartridge 31 and a bump 3321 installed in front of the baffle 332. An elastic member I, which is a compression spring I 343, is installed between the sealing plate 342 and the front end plate 311 of the fan-shaped frame to make the sealing plate 342 located at the rear side of the impurity discharge port 341. A blind hole with an opening facing forward is formed on the front side of the baffle 332, and the bump 3321 is slidably installed in the blind hole. An elastic member II, which is a compression spring II 3322, is arranged between the bump 3321 and the baffle 332 to make the bump 3321 protrude from the front of the baffle 332. After the bump 3321 protrudes from the front of the baffle 332, an air chamber is formed between the blind hole and the bump 3321. A plurality of air outlet holes 3323 communicating with the air chamber are formed on the side of the bump 3321 close to the sealing plate 342. An air inlet hole 3324 is formed on the baffle 332, and a check valve I for allowing gas to enter the air chamber is installed in the air inlet hole 3324. A check valve II for allowing gas to enter the cavity from the air chamber is installed in the air outlet hole 3323.

[0040] When flushing the impurities, during the process of the volume of the cavity becoming smaller, the bump 3321 is squeezed by the sealing plate 342 and thus contracts into the baffle 332, reducing the volume of the air chamber. At this time, the gas in the air chamber enters the cavity through the air outlet holes 3323, thereby impacting the impurities in the cavity, making the impurities flow rapidly in the water, and further separating the raw material oil on the impurities from the impurities. During the process of the volume of the cavity becoming larger, the bump 3321 is pushed by the elastic member II and thus protrudes from the baffle 332. At this time, the volume of the air chamber becomes larger, and the air outside the baffle 332 enters the air chamber through the check valve. After the flushing of the impurities is completed, the motor II drives the gear 334 to continue moving forward along the arc-shaped rack 14. The bump 3321 is first squeezed by the sealing plate 342 and thus contracts into the baffle 332. Until the bump 3321 abuts against the baffle 332, as the baffle 332 continues to move towards the sealing plate 342, the bump 3321 pushes the sealing plate 342 to contract the compression spring I 343, thereby communicating the cavity with the impurity discharge port 341. At this time, the water spraying grooves 3311 on the flushing rod 331 extend beyond the front side of the filter screen 313, and the water spraying holes on the water spraying grooves 3311 are located in the impurity discharge port 341. Then, the water spraying holes spray water towards the front side of the baffle 332, thereby flushing the impurities into the lower slag discharge tank 15. Finally, the motor II drives the gear 334 to rotate in the reverse direction for resetting.

[0041] The specific working principle of the present invention: First, the raw oil is injected into the filter cartridge 31 located above the left chamber through the oil inlet pipe 2. After the raw oil is filtered, the motor 1 drives the rotating shaft 32 to rotate 180°. After the dirty filter cartridge 31 rotates from the left chamber to the right chamber, the elastic expansion block 2 3352 on the baffle 332 in the dirty filter cartridge 31 is stuck in the groove 2 3313, and the water spray hole flushes water into the filter cartridge 31 from the front side of the baffle 332. At the same time, the motor 2 drives the gear 334 to move forward along the arc rack 14, so that the flushing rod 331 and the baffle 332 are moved from the filter screen 313. The rear end moves to the front end of the filter screen 313. At this time, a cavity with an upper opening is formed between the flushing rod 331, the baffle 332, the sealing plate 342 and the inner wall of the fan-shaped frame. Then the flushing rod 331 sprays water into the cavity. At the same time, the motor 2 drives the gear 334 to move back and forth along the arc-shaped rack 14, so that the flushing rod 331 and the baffle 332 swing back and forth to change the volume of the cavity. When the front side of the flushing rod 331 coincides with the front end surface of the fan-shaped frame, since the front side of the flushing rod 331 exceeds the front side of the baffle 332, the flushing rod 33 1 The filter screen 313 at the lower end of the cavity is blocked. At this time, the water spray holes in the water spray tank 3311 spray water upward, and the water passes through the filter screen 313 into the cavity to wash the impurities. When the flushing rod moves backward so that the front side of the flushing rod 331 is offset from the front end of the fan-shaped frame, the flushing rod 331 no longer blocks the filter screen 313 at the lower end of the cavity. At this time, the liquid passes through the filter screen 313 and is discharged from the cavity. Then the above process is repeated many times, so that the raw material oil adhered to the surface of the impurities is washed into the right chamber by water, and then the motor second drives the gear 334 along The arc-shaped rack 14 continues to move forward, and the protrusion 3321 is first squeezed by the sealing plate 342 and thus shrinks into the baffle 332 until the protrusion 3321 abuts against the baffle 332. As the baffle 332 continues to move toward the sealing plate 342, the protrusion 3321 pushes the sealing plate 342 to shrink the compression spring 1 343, thereby connecting the cavity with the impurity discharge port 341, and then the water spray hole sprays water toward the front side of the baffle 332, thereby flushing the impurities into the slag discharge trough 15 below, and finally the motor 2 drives the gear 334 to rotate in the opposite direction for reset.

[0042] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An oil-water separator, comprising a sedimentation tank and an oil inlet pipe, wherein the interior of the sedimentation tank is divided into two upper and lower chambers by a partition, namely a separation main chamber and a water storage chamber, and characterized in that: The separation chamber is divided into left and right chambers by a partition. A pre-treatment device is also provided in the separation chamber. The pre-treatment device includes: The fan-shaped filter cartridge is installed on the second partition plate by rotating around its axis. The upper end of the filter cartridge is open and the bottom surface is a filter screen. The cleaning mechanism includes a flushing rod rotatably installed on the lower end surface of the filter cartridge and a baffle installed in the filter cartridge rotatably around the axis of the filter cartridge. The front side of the flushing rod exceeds the front side of the baffle. The flushing rod is provided with a plurality of upward water spray holes, which are connected with the water storage chamber. In the initial state, when the filter screen rotates from the left chamber to the right chamber, the water spray holes flush water into the filter cartridge from the front side of the baffle. At the same time, the flushing rod and the baffle move from one end of the filter screen to the other end of the filter screen. At this time, an upper opening cavity is formed between the flushing rod, the baffle and the inner side wall of the filter cartridge. At the same time, the flushing rod and the baffle swing back and forth to change the volume of the cavity. Finally, the flushing rod is completely separated from the front end plate of the filter cartridge to discharge the liquid in the cavity.

2. The oil-water separator according to claim 1, characterized in that: The flushing rod is provided with a second motor, the second partition is provided with an arc track groove, the arc track groove is coaxial with the filter cartridge, an arc rack is provided in the track groove, and the output end of the second motor is connected with a gear meshing with the arc rack.

3. The oil-water separator according to claim 1, characterized in that: A rotating shaft coaxial with the filter cartridge is rotatably installed on the partition plate 2, and the filter cartridge is installed on the rotating shaft. An arc-shaped through hole is opened on the rotating shaft, which passes through the upper and lower parts and is coaxial with the rotating shaft. A connecting rod is rotatably installed in the arc-shaped through hole around the axial direction of the through hole. The upper end of the connecting rod is connected to the baffle, and the lower end of the connecting rod is provided with a clutch assembly. When the filter screen rotates from separation chamber 1 to separation chamber 2, the clutch assembly connects the flushing rod to the connecting rod. When the filter screen rotates from separation chamber 2 to separation chamber 1, the clutch assembly connects the connecting rod to the filter cartridge.

4. The oil-water separator according to claim 3, characterized in that: The clutch assembly includes an elastic telescopic block 1 arranged on the connecting rod and in contact with the filter cartridge, and an elastic telescopic block 2 arranged on the connecting rod and in contact with the flushing rod. The filter cartridge is provided with a groove 1 that matches the elastic telescopic block 1, and the flushing rod is provided with a groove 2 that matches the elastic telescopic block 2, and the telescopic resistance of the elastic telescopic block 2 is greater than the telescopic resistance of the elastic telescopic block 1.

5. The oil-water separator according to claim 1, characterized in that: The filter cartridge is also provided with a slag discharge mechanism, which includes a slag discharge port opened on the rear side of the front end plate of the filter cartridge and a sealing assembly for sealing the impurity discharge port. When the impurities are flushed, the sealing assembly is opened and the baffle pushes the impurities into the slag discharge port.

6. The oil-water separator according to claim 5, characterized in that: The sealing assembly includes a sealing plate rotatably installed in the filter cartridge around the filter cartridge axis and a protrusion arranged in front of the baffle, and an elastic member 1 is arranged between the sealing plate and the front end plate of the filter cartridge to locate the sealing plate at the rear side of the slag discharge port.

7. The oil-water separator according to claim 6, characterized in that: A blind hole with an opening facing forward is provided on the front side surface of the baffle, and a protrusion is slidably installed in the blind hole. An elastic member 2 is provided in the blind hole to enable the protrusion to extend from the front of the baffle. A plurality of air outlet holes connected with the blind hole are provided on the side of the protrusion close to the sealing plate. An air inlet is provided on the baffle, and a one-way valve 1 is provided in the air inlet hole to allow gas to enter the baffle, and a one-way valve 2 is provided in the air outlet hole to discharge gas in the blind hole. When flushing impurities, the protrusion is squeezed by the sealing plate and pushed by the elastic member 2, so as to reciprocate and shrink and extend in the baffle.

8. The oil-water separator according to claim 7, characterized in that: The second partition plate is provided with a slag discharge groove connected to the outside of the sedimentation tank. When the filter screen rotates from the first separation chamber to the second separation chamber, the slag discharge port is located above the slag discharge groove.

9. The oil-water separator according to claim 1, characterized in that: The filter cartridges are provided with two, and the two filter cartridges are arranged in a circular array around the rotating axis.

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