CN116589118A - Petroleum wastewater oil-water separation device - Google Patents

Abstract

The invention discloses an oil-water separation device for petroleum wastewater, which comprises a first separation mechanism and a second separation mechanism, wherein the second separation mechanism is arranged at one end of the first separation mechanism, the first separation mechanism comprises a support frame, a separation tank, a liquid inlet pipe, a maintenance bin, a first motor, an oil outlet pipe, a water outlet pipe, a pipeline valve and a heater, the separation tank is fixedly connected to the top of the support frame, the liquid inlet pipe is arranged at one end of the separation tank, the maintenance bin is arranged at one side of the liquid inlet pipe, the first motor is connected to the top of the separation tank through screws, the oil outlet pipe is arranged at one side of the separation tank, and the water outlet pipe is arranged at one end of the bottom of the separation tank. The invention has the characteristics of strong practicability, and through the arrangement of the rotating roller, the outside below the rotating roller is provided with the sleeve and the propeller blade, and the rotating roller drives the propeller blade to rotate, so that centrifugal rotating force is generated in wastewater liquid, the oil-water separation efficiency is improved, and the oil-water separation time is shortened.

Description

A kind of petroleum wastewater oil-water separation device

technical field

The invention relates to the technical field of petroleum processing, in particular to a petroleum wastewater oil-water separation device.

Background technique

Petroleum wastewater mainly includes three aspects: petroleum mining wastewater, oil refining wastewater and petrochemical wastewater. The crude oil extracted from the oil field is discharged during the dehydration process. The wastewater also contains a large amount of dissolved salts. The wastewater discharged from the refinery is mainly Oily wastewater, sulfur-containing wastewater and alkaline wastewater.

According to the publication number CN212609673U, a petroleum wastewater oil-water separation device is disclosed, which relates to a petroleum treatment device, specifically comprising an oil-water tank and a waste water tank, the bottom of the oil-water tank is fixedly connected to one side port of the first three-way valve, and the waste water tank The bottom of the bottom is fixedly connected to one side port of the second three-way valve, the middle port of the first three-way valve is fixedly connected to one end of the separating elbow, and the other end of the separating elbow is fixedly connected to the middle port of the second three-way valve, A cut-off valve is fixed in the middle of the separation elbow; a pressure regulating plate is slidably installed inside the water pipe, and the pressure regulating plate is rotatably connected with the bottom end of the threaded rod. block, the fixed block is threadedly connected with the threaded rod; the top of the waste water tank is threadedly connected with a fixed cover. During the use of the petroleum wastewater oil-water separation device, the separation accuracy of wastewater and oil-water is effectively improved, and the operation is simple and convenient, which reduces the work difficulty of staff.

However, there are still deficiencies in the above-mentioned device. The oil is poured into the oil-water tank through the oil inlet, and after standing for a period of time to treat the waste water and oil-water stratification, it mainly relies on standing to carry out the oil-water stratification, which takes a long time and has low separation efficiency. The filtering effect of oil and water is also poor, and the separated water will still contain certain grease pollutants.

Therefore, the design has strong practicability and by setting a rotating roller, there are sleeves and propeller blades on the outside below the rotating roller, and the rotating roller drives the propeller blade to rotate, generating centrifugal force in the wastewater liquid, improving the efficiency of oil-water separation and shortening oil-water separation A kind of petroleum wastewater oil-water separation device is very necessary.

Contents of the invention

The object of the present invention is to provide a petroleum wastewater oil-water separation device to solve the problems raised in the above-mentioned background technology.

In order to solve the above technical problems, the present invention provides the following technical solutions: a petroleum wastewater oil-water separation device, comprising a first separation mechanism and a second separation mechanism, the second separation mechanism is arranged at one end of the first separation mechanism.

The first separation mechanism includes a support frame, a separation tank, a liquid inlet pipe, an inspection chamber, a first motor, an oil outlet pipe, a water outlet pipe, a pipeline valve and a heater, and the separation tank is fixedly connected to the top of the support frame. The liquid inlet pipe is arranged at one end of the separation tank, the maintenance chamber is arranged at one side of the liquid inlet pipe, the first motor screw is connected to the top of the separation tank, the oil outlet pipe is arranged at one side of the separation tank, and the The water outlet pipe is set at one end of the bottom of the separation tank, the pipeline valve is set at the top of the water outlet pipe, the heater screw is connected to the bottom of the support frame, and the petroleum waste water is injected into the middle separation tank through the liquid inlet pipe. For treatment, the waste oil is discharged from the oil outlet pipe, and the pre-filtered water is discharged to the second separation mechanism through the outlet pipe. There is an inspection chamber on the outside of the separation tank for maintenance and inspection of the inside of the separation tank to ensure the oil-water separation works stably.

According to the above technical solution, the separation tank includes a tank body, a rotating roller, a rotating plate, a separation plate, a sleeve, a propeller blade and a heating pipe, the tank body is fixedly connected to the top of the support frame, and the separation plate is arranged on the top of the tank The inside of the body, the rotating roller is rotatably connected to the inside of the tank body, the top of the rotating roller penetrates the tank body and is fixedly connected to the first motor, the rotating plate is socketed and connected to the outside of the rotating roller and is arranged on the separation plate At the top, the sleeve is socketed and connected to the bottom of the outer side of the rotating roller, the propeller blade is fixedly connected to the outside of the sleeve, the heating pipe is arranged at the bottom of the inner wall of the tank, and the oil and water of the inlet pipe are input into the tank. Preliminary separation is carried out on the separation plate to separate the lumps that may exist in the wastewater from the liquid. The lumps are broken up by the rotating plate driven by the first motor to drive the rotating roller to facilitate the separation of the lumps. The rotating roller penetrates and separates The plate extends to the bottom of the tank, and there are sleeves and propeller blades on the outside under the rotating roller. The rotating roller drives the propeller blade to rotate, generating centrifugal force in the waste water liquid to accelerate the separation of oil and water. The separated waste oil is discharged through the oil outlet pipe. The waste water is discharged through the outlet pipe.

According to the above technical solution, the second separation mechanism includes a connecting pipe, a treatment tank, a water supply pipe, a second motor, a transmission shaft, a transmission belt, a rotating shaft, a mover, a third motor, a mounting bracket and an inspection cover, and the connecting pipe The flange is connected to one end of the water outlet pipe, the treatment box is arranged at one end of the connecting pipe, the water supply pipe is arranged at one side of the treatment box, the second motor screw is connected to the top of the treatment box, and the transmission shaft rotates Connected to one end of the second motor, the transmission belt is rotatably connected to the outside of the transmission shaft, the rotation shaft is rotatably connected to the other end inside the transmission belt, the mover is arranged at one end of the rotation shaft, and the mover is fixedly connected to the One side of the processing box, the third motor screw is connected to one end of the processing box, the mounting frame is arranged on the bottom of the third motor, the inspection cover is arranged on one side of the top of the processing box, after the first separation mechanism handles The waste water is injected into the treatment tank through the connecting pipe, and then undergoes secondary treatment through the treatment tank to ensure a high degree of oil separation in the water. An inspection cover is installed on the top of the treatment tank to facilitate maintenance and repair of the inside of the treatment tank.

According to the above technical solution, the treatment box includes a box body, a cleaning nozzle, a cleaner, a filter plate, a stirring roller and a stirring paddle, the cleaning nozzle is arranged above the inside of the box, and one end of the cleaning nozzle runs through the The tank body is connected with the flange of the water supply pipe, the filter plate is installed under the cleaning nozzle, the cleaner is arranged on the top of the filter plate, one end of the cleaner is fixedly connected with the mover, and the stirring roller is rotatably connected Below the inside of the box, the stirring paddle is fixedly connected to the outside of the stirring roller, and one end of the stirring roller penetrates the box and is fixedly connected to the third motor. The water treated by the first separation mechanism enters the box and passes through the filter plate. There is a packing inside, and the secondary separation of oily substances is carried out through the packing in the filter plate. There is a liquid feeding pipe under the water supply pipe, and the liquid feeding pipe adds catalytic liquid to the bottom of the box. The third motor is used to drive the stirring roller to rotate, so that the catalytic liquid and The water reacts to purify the water, and the cleaning nozzle is used to flush the filter plate and replenish the water in the box.

According to the above technical solution, the mover includes a housing, a rotating belt, a rotating pin, a moving block and a chute, the housing is fixedly connected to one end of the box, and the rotating pin is fixedly connected to both sides inside the housing , the rotating belt is rotatably connected to the outside of the rotating bolt, the chute is opened at the bottom of the housing, the moving block is slidably connected to the top of the chute, the top of the moving block is fixedly connected to the bottom of the rotating belt, One end of the moving block is fixedly connected to the cleaner, the rotating shaft extends through the housing to the inside of the rotating belt, and the second motor drives the driving belt to rotate, so that the rotating shaft drives the rotating belt in the housing to rotate, so that the moving block can Move it so that the cleaner can move in translation to clean the filter plate.

According to the above technical solution, the bottom of the heating pipe penetrates the tank body and is fixedly connected to the heater, and the heater is used to heat the heating pipe, thereby increasing the temperature in the tank to improve the oil-water separation efficiency.

According to the above technical solution, a slide rail is provided on one side of the inner wall of the box, and the inside of the slide rail is slidably connected to one end of the cleaner, so that the cleaner slides stably in the box and facilitates cleaning of the filter plate.

According to the above technical solution, the inner wall of the tank body is sprayed with anti-corrosion coating, and the substances contained in the petroleum wastewater have certain corrosiveness, and spraying the anti-corrosion coating in the tank body can effectively increase the service life of the separation tank.

According to the above technical solution, the shape of the propeller blades is enlarged sequentially from bottom to top, and the propeller blades drive the oil and water at the bottom of the tank to rotate centrifugally, which facilitates the stratification of oil and water and improves the efficiency of oil-water separation.

Compared with the prior art, the beneficial effects achieved by the present invention are:

1. In the present invention, by providing the first separation mechanism and the second separation mechanism, the petroleum wastewater is subjected to secondary separation and filtration, so as to ensure high oil-water separation efficiency of the device.

2. In the present invention, by providing a rotating roller, there are sleeves and propeller blades outside the lower part of the rotating roller, and the rotating roller drives the propeller blade to rotate, generating centrifugal force in the waste water liquid, improving the efficiency of oil-water separation and shortening the time of oil-water separation .

3. In the present invention, a separation plate is provided, on which the preliminary separation is performed, and the lumps that may exist in the wastewater are separated from the liquid, and the lumps are broken up by the rotating plate driven by the first motor to rotate the rotating roller. , to prevent blockage caused by blockage in the subsequent oil-water separation process and affect the operation of the device.

4. In the present invention, a heater is provided, and the heater is used to heat the heating pipe, thereby increasing the temperature in the tank and improving the efficiency of oil-water separation.

5. In the present invention, the secondary separation of waste water containing oil is carried out through the filler arranged in the filter plate. A liquid feeding pipe is arranged under the water supply pipe, and the liquid feeding pipe adds catalytic liquid to the bottom of the box body, and the third motor is used to drive the stirring roller to rotate , let the catalytic liquid react with water to purify the water.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

In the attached picture:

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is the structural representation of the first separating mechanism of the present invention;

Fig. 3 is a schematic diagram of the internal structure of the separation tank of the present invention;

Fig. 4 is the structural representation of the second separating mechanism of the present invention;

Fig. 5 is a schematic diagram of the internal structure of the processing box of the present invention;

Fig. 6 is a schematic diagram of the internal structure of the mover of the present invention.

In the figure: 1, first separation mechanism; 2, second separation mechanism; 101, support frame; 102, separation tank; 103, liquid inlet pipe; 104, maintenance chamber; 105, first motor; 106, oil outlet pipe; 107 , water outlet pipe; 108, pipeline valve; 109, heater; 110, tank body; 111, rotating roller; 112, rotating plate; 113, separation plate; , connection pipe; 202, treatment box; 203, water supply pipe; 204, second motor; 205, transmission shaft; 206, transmission belt; 207, rotating shaft; 208, mover; 209, third motor; 211, inspection cover; 212, box body; 213, cleaning nozzle; 214, cleaner; 215, filter plate; 216, stirring roller; 217, stirring paddle; 218, shell; 219, rotating belt; 220, rotating bolt ; 221, moving block; 222, chute.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to Figures 1-6, the present invention provides a technical solution: a petroleum wastewater oil-water separation device, including a first separation mechanism 1 and a second separation mechanism 2, and the second separation mechanism 2 is arranged at one end of the first separation mechanism 1 .

The first separation mechanism 1 comprises a support frame 101, a separation tank 102, a liquid inlet pipe 103, an overhaul chamber 104, a first motor 105, an oil outlet pipe 106, a water outlet pipe 107, a pipeline valve 108 and a heater 109, and the separation tank 102 is fixedly connected to On the top of the support frame 101, the liquid inlet pipe 103 is arranged at one end of the separation tank 102, the maintenance chamber 104 is arranged at one side of the liquid inlet pipe 103, the first motor 105 is screwed to the top of the separation tank 102, and the oil outlet pipe 106 is arranged at the separation tank 102. One side of the tank 102, the outlet pipe 107 is arranged at one end of the bottom of the separation tank 102, the pipeline valve 108 is arranged at the top of the outlet pipe 107, the heater 109 is screwed to the bottom of the support frame 101, and the petroleum waste water is injected through the inlet pipe 103 In the middle separation tank 102, after the treatment of the separation tank 102, the waste oil is discharged from the oil outlet pipe 106, and the preliminarily filtered water is discharged to the second separation mechanism 2 through the water outlet pipe 107. An overhaul chamber 104 is arranged on the outside of the separation tank 102. To maintain and overhaul the inside of the separation tank 102 to ensure the oil-water separation works stably.

The separation tank 102 includes a tank body 110, a rotating roller 111, a rotating plate 112, a separation plate 113, a sleeve 114, a propeller blade 115 and a heating pipe 116. The tank body 110 is fixedly connected to the top of the support frame 101, and the separation plate 113 is arranged on the top of the tank. Inside the body 110, the rotating roller 111 is rotatably connected to the inside of the tank body 110, the top of the rotating roller 111 penetrates the tank body 110 and is fixedly connected to the first motor 105, and the rotating plate 112 is sleeved and connected to the outside of the rotating roller 111 and is arranged on a separate The top of the plate 113, the casing 114 is socketed and connected to the bottom of the outer side of the rotating roller 111, the propeller blade 115 is fixedly connected to the outside of the casing 114, the heating pipe 116 is arranged at the bottom of the inner wall of the tank body 110, and the oil and water in the liquid inlet pipe 103 is input to In the tank body 110, preliminary separation is carried out on the separation plate 113, and the lumps that may exist in the wastewater are separated from the liquid. The lumps are broken up by the rotating plate 112 driven by the first motor 105 to rotate the rotating roller 111, so as to facilitate Blocks are separated, and the rotating roller 111 extends through the separation plate 113 to the bottom of the tank body 110. There are sleeves 114 and propeller blades 115 outside the lower part of the rotating roller 111. The rotating roller 111 drives the propeller blade 115 to rotate, which is generated in the waste water liquid. Centrifugal rotation force accelerates the separation of oil and water. The separated waste oil is discharged through the oil outlet pipe 106, and the waste water is discharged through the water outlet pipe 107. The bottom of the heating pipe 116 runs through the tank body 110 and is fixedly connected with the heater 109. The heater 109 is used to connect the heating pipe 116 Heating is carried out to increase the temperature inside the tank body 110 to improve the oil-water separation efficiency. The inner wall of the tank body 110 is sprayed with anti-corrosion coating, and the substances contained in the petroleum wastewater have certain corrosive properties. The anti-corrosion coating can effectively increase the service life of the separation tank 102. The shape of the propeller blade 115 is enlarged sequentially from bottom to top, and the oil and water at the bottom of the tank body 110 are driven by the propeller blade 115 to centrifugally rotate, which is convenient for stratifying the oil and water and improving The efficiency of oil-water separation.

The second separation mechanism 2 includes a connecting pipe 201, a treatment box 202, a water supply pipe 203, a second motor 204, a transmission shaft 205, a transmission belt 206, a rotating shaft 207, a mover 208, a third motor 209, a mounting frame 210 and an inspection cover 211 , the connecting pipe 201 is flange-connected to one end of the water outlet pipe 107, the treatment box 202 is arranged on one end of the connecting pipe 201, the water supply pipe 203 is arranged on one side of the treatment box 202, and the second motor 204 is screwed to the top of the treatment box 202, The drive shaft 205 is rotatably connected to one end of the second motor 204, the drive belt 206 is rotatably connected to the outside of the drive shaft 205, the rotating shaft 207 is rotatably connected to the other end of the drive belt 206, and the mover 208 is arranged on one end of the turn shaft 207. 208 is fixedly connected to one side of the processing box 202, the third motor 209 is screwed to one end of the processing box 202, the mounting frame 210 is arranged on the bottom of the third motor 209, and the maintenance cover 211 is arranged on one side of the processing box 202 top, the second Waste water treated by a separation mechanism 1 is injected into the treatment tank 202 through the connecting pipe 201, and is subjected to secondary treatment through the treatment tank 202 to ensure a high degree of separation of oil and liquid in the water. An inspection cover 211 is installed on the top of the treatment tank 202 to facilitate the treatment The interior of the box 202 is maintained and inspected.

The treatment box 202 includes a box body 212, a cleaning nozzle 213, a cleaner 214, a filter plate 215, a stirring roller 216 and a stirring paddle 217. The cleaning nozzle 213 is arranged above the inside of the casing 212, and one end of the cleaning nozzle 213 runs through the box. The body 212 is flanged to the water supply pipe 203, the filter plate 215 is installed under the cleaning nozzle 213, the cleaner 214 is arranged on the top of the filter plate 215, one end of the cleaner 214 is fixedly connected to the mover 208, and the stirring roller 216 is connected in rotation Below the inside of the box body 212, the stirring paddle 217 is fixedly connected to the outside of the stirring roller 216, and one end of the stirring roller 216 penetrates the box body 212 and is fixedly connected to the third motor 209, and the water treated by the first separation mechanism 1 enters the box body 212 Inside the filter plate 215, there is a filler, through which the oil-containing material is separated for the second time, and the filling pipe 203 is provided with a liquid feeding pipe, and the liquid feeding pipe adds catalytic liquid to the bottom of the box body 212, and the third motor is used to 209 drives the stirring roller 216 to rotate so that the catalytic liquid and water react to purify the water. The cleaning nozzle 213 is used to flush the filter plate 215 and replenish the water in the box body 212 .

The mover 208 includes a housing 218, a rotating belt 219, a rotating pin 220, a moving block 221 and a chute 222. The housing 218 is fixedly connected to one end of the casing 212, and the rotating pin 220 is fixedly connected to both sides of the housing 218. The rotating belt 219 is rotatably connected to the outside of the rotating bolt 220, the chute 222 is opened at the bottom of the housing 218, the moving block 221 is slidably connected to the top of the chute 222, and the top of the moving block 221 is fixedly connected to the bottom of the rotating belt 219. One end of the moving block 221 is fixedly connected with the cleaner 214, the rotating shaft 207 extends through the housing 218 to the inside of the rotating belt 219, and the second motor 204 drives the transmission belt 206 to rotate, so that the rotating shaft 207 drives the rotating belt 219 in the housing 218 Rotate, so that the moving block 221 can move, and the cleaner 214 can be translated to clean the filter plate 215. One side of the inner wall of the box body 212 is provided with a slide rail, and the inside of the slide rail is slidingly connected with one end of the cleaner 214 , so that the cleaner 214 slides stably on the box body 212 , which is convenient for cleaning the filter plate 215 .

When in use, the petroleum wastewater is injected into the separation tank 102 through the liquid inlet pipe 103, the first motor 105 drives the rotating plate 112 outside the rotating roller 111 to rotate to break up the lumps in the petroleum wastewater, and the rotating roller 111 drives the propeller blade 115 Rotate, generate centrifugal force in the waste water liquid, accelerate the separation of oil and water, the separated waste oil is discharged through the oil outlet pipe 106, the waste water is discharged through the water outlet pipe 107, and the water treated by the first separation mechanism 1 enters the tank 212 and is filtered The filling in the plate 215 performs secondary separation of the oily substances. A liquid feeding pipe is provided under the water supply pipe 203, and the liquid feeding pipe adds catalytic liquid to the bottom of the box body 212. The third motor 209 is used to drive the stirring roller 216 to rotate, so that the catalytic liquid and water are separated. reaction, thereby purifying the water, and the purified water is discharged from the treatment tank 202 .

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. The utility model provides a petroleum wastewater oil water separator, includes first separating mechanism (1) and second separating mechanism (2), its characterized in that: the second separation mechanism (2) is arranged at one end of the first separation mechanism (1),

the utility model provides a separation device, including support frame (101), knockout drum (102), feed liquor pipe (103), maintenance storehouse (104), first motor (105), play oil pipe (106), outlet pipe (107), pipeline valve (108) and heater (109), knockout drum (102) fixed connection is in the top of support frame (101), feed liquor pipe (103) set up in the one end of knockout drum (102), maintenance storehouse (104) set up in one side of feed liquor pipe (103), first motor (105) screw connection is in the top of knockout drum (102), play oil pipe (106) set up in one side of knockout drum (102), outlet pipe (107) set up in the one end of knockout drum (102) bottom, pipeline valve (108) set up in the top of outlet pipe (107), heater (109) screw connection is in the bottom of support frame (101).

2. The petroleum wastewater oil-water separation device according to claim 1, wherein: the separation tank (102) comprises a tank body (110), a rotating roller (111), a rotating plate (112), a separating plate (113), a sleeve (114), a propeller blade (115) and a heating pipe (116), wherein the tank body (110) is fixedly connected to the top of a supporting frame (101), the separating plate (113) is arranged in the tank body (110), the rotating roller (111) is rotationally connected to the inside of the tank body (110), the top of the rotating roller (111) penetrates through the tank body (110) and is fixedly connected with a first motor (105), the rotating plate (112) is connected to the outside of the rotating roller (111) in a sleeved mode and is arranged at the top of the separating plate (113), the sleeve (114) is connected to the bottom of the outside of the rotating roller (111) in a sleeved mode, the propeller blade (115) is fixedly connected to the outside of the sleeve (114), and the heating pipe (116) is arranged at the bottom of the inner wall of the tank body (110).

3. The petroleum wastewater oil-water separation device according to claim 1, wherein: the utility model provides a second separation mechanism (2) includes connecting pipe (201), processing case (202), moisturizing pipe (203), second motor (204), transmission shaft (205), drive belt (206), axis of rotation (207), shifter (208), third motor (209), mounting bracket (210) and access cover (211), connecting pipe (201) flange joint is in the one end of outlet pipe (107), processing case (202) set up in the one end of connecting pipe (201), moisturizing pipe (203) set up in one side of processing case (202), second motor (204) screw connection is in the top of processing case (202), transmission shaft (205) rotate and connect in the one end of second motor (204), outside in transmission shaft (205) is connected in the rotation of drive belt (206), the other end inside in transmission belt (206) is connected in the rotation of axis (207), shifter (208) fixed connection is in one side of processing case (202), third motor (209) are connected in the top of processing case (202), the mounting bracket (210) is in one side of setting up in top (211).

4. A petroleum wastewater oil-water separation device according to claim 3, wherein: the treatment box (202) comprises a box body (212), a cleaning spray pipe (213), a cleaner (214), a filter plate (215), a stirring roller (216) and a stirring paddle (217), wherein the cleaning spray pipe (213) is arranged above the inside of the box body (212), one end of the cleaning spray pipe (213) penetrates through the box body (212) and is connected with a water supplementing pipe (203) in a flange mode, the filter plate (215) is arranged below the cleaning spray pipe (213), the cleaner (214) is arranged at the top of the filter plate (215), one end of the cleaner (214) is fixedly connected with a shifter (208), the stirring roller (216) is rotationally connected to the lower portion inside the box body (212), the stirring paddle (217) is fixedly connected to the outside of the stirring roller (216), and one end of the stirring roller (216) penetrates through the box body (212) and is fixedly connected with a third motor (209).

5. A petroleum wastewater oil-water separation device according to claim 3, wherein: the shifter (208) comprises a shell (218), a rotating belt (219), a rotating bolt (220), a moving block (221) and a sliding groove (222), wherein the shell (218) is fixedly connected to one end of the box body (212), the rotating bolt (220) is fixedly connected to two sides of the inside of the shell (218), the rotating belt (219) is rotationally connected to the outside of the rotating bolt (220), the sliding groove (222) is formed in the bottom of the shell (218), the moving block (221) is slidably connected to the top of the sliding groove (222), the top of the moving block (221) is fixedly connected with the bottom of the rotating belt (219), one end of the moving block (221) is fixedly connected with the cleaner (214), and the rotating shaft (207) penetrates through the shell (218) and extends to the inside of the rotating belt (219).

6. The petroleum wastewater oil-water separation device according to claim 2, wherein: the bottom of the heating pipe (116) penetrates through the tank body (110) and is fixedly connected with the heater (109).

7. The petroleum wastewater oil-water separation device according to claim 4, wherein: one side of the inner wall of the box body (212) is provided with a sliding rail, and the inside of the sliding rail is in sliding connection with one end of the cleaner (214).

8. The petroleum wastewater oil-water separation device according to claim 2, wherein: the inner wall of the tank body (110) is sprayed with anti-corrosion coating.

9. The petroleum wastewater oil-water separation device according to claim 2, wherein: the shape of the propeller blades (115) is sequentially enlarged from bottom to top.