Oil field produced oily sewage pretreatment equipment

Abstract

The invention discloses oil field produced oily sewage pretreatment equipment, which relates to the technical field of sewage treatment, and comprises a tank body unit, which comprises a tank body, an access port arranged at one side of the tank body and used for connecting sewage, and a discharge port arranged at the other side of the tank body and used for discharging water, the access hole is formed in the tank body and is used for overhauling and cleaning the interior of the tank body. The filter assembly rotates under the impact force of sewage and intercepts particulate matters and impurities in the sewage, particulate matter separation is achieved, meanwhile, the spraying assembly pumps water in the tank body to wash the filter assembly, the rotating speed of the filter assembly is increased while the impurities are removed, and meanwhile the air injection assembly starts to convey air to the tank body. Bubbles are generated at the bottom of the oil-containing sewage, the bubbles adsorb grease and bring the grease to the surface of the sewage, the separation process is accelerated, the separation assembly divides the oil-containing sewage, the sewage at the bottom is discharged, the grease at the top is collected, and the sewage and oil on the surface of the sewage are collected and discharged at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to a pretreatment device for oilfield produced oily sewage. Background Art

[0002] During the oil field exploitation process, the oil layer is often accompanied by formation water. When crude oil is extracted, these formations Water is extracted from the ground along with crude oil. Formation water has been in contact with crude oil to some extent, dissolving and carrying some crude oil components, thus forming oily wastewater.

[0003] When currently using existing technologies to pre-treat oily wastewater from oilfields, most equipment does not separate suspended solids or impurities in the oily wastewater, resulting in solid particles in the oil after oil-water separation. In addition, when treating oily wastewater, the waiting time for the natural separation of oil and water is too long, resulting in a slow oil-water separation process and affecting the separation efficiency. Summary of the Invention

[0004] In view of the above problems existing in the existing oilfield oily wastewater pretreatment equipment, the present invention is proposed.

[0005] Therefore, the present invention provides a pretreatment equipment for oily wastewater produced from oil fields, the purpose of which is to solve the problem that solid suspended matter or impurities in oily wastewater cannot be separated, and the natural separation time of oil and water during oily wastewater treatment is too long, resulting in a slow oil-water separation process and affecting the separation efficiency.

[0006] In order to solve the above technical problems, the present invention provides the following technical solution: comprising a tank unit and a filter unit for filtering solid particulate matter, characterized in that: The invention also includes an oil-liquid separation unit, comprising a gas injection assembly disposed on the top of the tank body for accelerating oil-liquid separation, a separation assembly disposed inside the gas injection assembly for separating the oil and liquid, and an adjustment assembly slidably disposed on the separation assembly for adjusting the oil-liquid separation, wherein the adjustment assembly rises as the oil inside the tank body unit increases to ensure optimal oil-liquid separation effect; The air injection assembly includes a suction fan arranged on the top of the tank body, an L-shaped tube arranged at both ends of the suction fan, and a blowing member arranged at the bottom of the L-shaped tube, and the L-shaped tube is connected to the tank body. The separation assembly includes a first dividing plate disposed inside the tank body, a second dividing plate disposed inside the tank body, and a second intercepting plate disposed inside the tank body, wherein the second intercepting plate cooperates with the second dividing plate; A U-shaped guardrail is provided on one side of the second dividing plate, an oil drain pipe is provided on the U-shaped guardrail, and the oil drain pipe passes through and is fixedly connected to the tank body.

[0007] As a preferred solution of the oilfield oily wastewater pretreatment equipment described in the present invention, the adjustment component includes an electric push rod arranged on the top of the tank body, a U-shaped connecting rod arranged at the output end of the electric push rod, and a movable plate arranged at the bottom of the U-shaped connecting rod, and the movable plate is slidably connected inside the U-shaped guardrail, and the U-shaped connecting rod is slidably connected to the L-shaped pipe.

[0008] As a preferred solution of the oilfield oily wastewater pretreatment equipment of the present invention, teeth are provided on the top of the movable plate.

[0009] As a preferred solution of the oilfield oily wastewater pretreatment equipment described in the present invention, the filter unit includes a filter component arranged inside the tank body for intercepting solids inside the wastewater, and a spray component arranged on the top of the filter component for spraying and flushing the filter component.

[0010] As a preferred solution of the oilfield oily wastewater pretreatment equipment described in the present invention, the filter assembly includes an interception plate 1 inside the tank body, a delivery pipe arranged inside the interception plate 1, and a delivery pipe rotatably arranged on the delivery pipe.

[0011] As a preferred solution of the oilfield oily wastewater pretreatment equipment of the present invention, the intercepting cylinder on the outer diameter of one side of the delivery pipe is provided with a baffle, and the baffle cooperates with the spray assembly.

[0012] As a preferred solution of the oilfield oily wastewater pretreatment equipment described in the present invention, an annular filter plate is provided inside one side of the delivery pipe, a collecting piece is provided on the outer diameter of the delivery pipe, and the collecting piece is penetrated and connected to the annular filter plate.

[0013] As a preferred solution of the oilfield oily wastewater pretreatment equipment described in the present invention, the spray assembly includes a water pump arranged on the top of the tank body, a water pipe arranged at the output end of the water pump, and a spray piece arranged at the other end of the water pipe, and the spray piece cooperates with the baffle and the interception cylinder.

[0014] As a preferred solution of the oilfield oily wastewater pretreatment equipment of the present invention, a conduit is provided at the input end of the water pump, an F-type pipe is provided at the other end of the conduit, and the F-type pipe passes through and is connected to the tank body.

[0015] As a preferred solution of the oilfield oily wastewater pretreatment equipment described in the present invention, it includes: a tank body, an inlet arranged on one side of the tank body for connecting sewage, an outlet arranged on the other side of the tank body for drainage, and an inspection port arranged on the tank body for inspecting and cleaning the interior of the tank body.

[0016] The beneficial effects of the present invention are as follows: when treating oily wastewater, the impact force of the wastewater itself is used to rotate the filter assembly and intercept particulate matter and impurities in the wastewater, thereby realizing particulate matter separation. At the same time, the spray assembly draws water from the tank body to flush the filter assembly, thereby removing impurities and accelerating its rotation speed, further improving the separation efficiency. The filter assembly is then transported to the separation unit together with the separated oily wastewater. The oily wastewater naturally floats up in layers because the density of oil is lower than that of water. At the same time, the air injection assembly starts to transport air to the tank body, thereby generating bubbles at the bottom of the oily wastewater. The bubbles absorb the oil and bring it to the surface of the wastewater, thereby accelerating the separation process. The separation assembly divides the oily wastewater, discharges the bottom wastewater, and collects the oil at the top, thereby completing the simultaneous collection and discharge of the wastewater and the oil on the surface of the wastewater. At the same time, the adjustment assembly dynamically adjusts the segmentation effect to ensure efficient separation, improves separation efficiency, reduces impurity residues, improves operational flexibility and adaptability, effectively treats oily wastewater, realizes rapid and efficient separation, and reduces resource waste and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the oilfield oily wastewater pretreatment equipment of the present invention.

[0019] Figure 2 This is a side structural schematic diagram of the oilfield oily wastewater pretreatment equipment of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of the oilfield oily wastewater pretreatment equipment of the present invention.

[0021] Figure 4 This is a schematic cross-sectional view of the oilfield oily wastewater pretreatment equipment of the present invention.

[0022] Figure 5 This is a schematic diagram of the filter assembly structure of the oilfield oily wastewater pretreatment equipment of the present invention.

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of the filter assembly of the oilfield oily wastewater pretreatment equipment of the present invention.

[0024] Figure 7 The present invention is an oilfield oily wastewater pretreatment equipment Figure 6 A is an enlarged structural diagram of FIG.

[0025] Figure 8 This is a structural schematic diagram of the oil-air injection component of the oilfield oily wastewater pretreatment equipment of the present invention.

[0026] Figure 9 This is a cross-sectional structural diagram of the oil-air injection assembly of the oilfield oily wastewater pretreatment equipment of the present invention. Figure 10 The present invention is an oilfield oily wastewater pretreatment equipment Figure 9 Schematic diagram of the enlarged structure at point B.

[0027] Explanation of reference numerals: 100, tank unit; 101, tank; 102, inspection port; 103, access port; 104, discharge port; 200, filter unit; 201, filter assembly; 2011, interception plate 1; 2012, delivery pipe; 2013, annular filter plate; 2014, collecting element; 2015, interception cylinder; 2016, baffle; 202, spray assembly; 2021, water pump; 2022, water delivery pipe; 2023, spray element; 2024, conduit ; 2025, F-type pipe; 300, oil-liquid separation unit; 301, air injection assembly; 3011, suction fan; 3012, L-type pipe; 3013, blowing part; 302, separation assembly; 3021, partition plate one; 3022, partition plate two; 3023, U-shaped guardrail; 3024, oil drain pipe; 3025, intercepting plate two; 303, adjustment assembly; 3031, electric push rod; 3032, U-shaped connecting rod; 3033, movable plate; 3034, blocking teeth. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] Example 1, with reference to Figures 1-4 , which is the first embodiment of the present invention, provides an oilfield produced oily wastewater pretreatment device, which includes a tank unit 100, a filter unit 200, and an oil-liquid separation unit 300.

[0030] The tank unit 100 includes a tank body 101, an inlet 103 provided on one side of the tank body 101 for connecting to sewage, an outlet 104 provided on the other side of the tank body 101 for draining water, and an inspection port 102 provided on the tank body 101 for inspecting and cleaning the interior of the tank body 101. The filter unit 200 includes a filter assembly 201 disposed inside the tank 101 for intercepting solids in the sewage, and a spray assembly 202 disposed on top of the filter assembly 201 for spraying and flushing the filter assembly 201. The spray assembly 202 is connected to the bottom of the tank 101 to achieve water recycling. The oil-liquid separation unit 300 includes an air injection assembly 301 disposed on the top of the tank body 101 for accelerating oil-liquid separation, a separation assembly 302 disposed inside the air injection assembly 301 for dividing the oil, and an adjustment assembly 303 slidably disposed on the separation assembly 302 for adjusting the oil-liquid separation. The adjustment assembly 303 cooperates with the separation assembly 302 to complete the oil-liquid separation operation; When treating oily wastewater, the inlet 103 is first connected to the sewage outlet, and the sewage is transported to the interior of the filter component 201. The impact force generated by the sewage entering the filter component 201 causes the filter component 201 to start rotating, and intercepts the particles and impurities inside the sewage, separates the oil, and transports the oily wastewater to the oil-liquid separation unit 300. At the same time, the spray component 202 also starts to cooperate with the filter component 201 to extract water from the inside of the tank body 101, flush the surface of the filter component 201, and impact the impurities and particles attached to the inner wall of the filter component 201 together, and then collect them together. During the process of the spray component 202 flushing the filter component 201, it also cooperates with the sewage inside the filter component 201 to impact the filter component 201 so that the filter component 201 can accelerate the rotation speed, making the separation of particles inside the sewage cleaner and faster. At the same time, the water flushed by the spray component 202 is again transported to the interior of the tank body 101 together with the sewage that has been separated from the impurities for oil-liquid separation.

[0031] Because the density of grease is smaller than that of water, after the oily wastewater is transported into the tank body 101, the oil and liquid begin to separate automatically. At the same time, the air injection component 301 begins to supply air into the tank body 101, and generates bubbles at the bottom of the oily wastewater in the tank body 101. The bubbles move upward from the bottom of the oily wastewater. During the movement of the bubbles, they come into contact with the grease and adsorb the grease, bringing the grease to the surface of the wastewater, allowing the oily wastewater to be separated from the oil and liquid more quickly. Because the density of grease is smaller than that of wastewater, the grease floats on the surface of the wastewater and is separated by the separation component 302. The wastewater at the bottom is discharged and transported into the tank body 101, while the grease at the top is intercepted and collected and transported uniformly. At the same time, the adjustment component 303 can adjust the separation effect of grease and wastewater up and down according to the amount of oily wastewater entering the tank body 101, thereby completing the oil-liquid separation. The separated wastewater is discharged from the discharge port 104, and the separated grease is discharged from the interior of the separation component 302, thereby completing the oil-liquid separation.

[0032] During use, when treating oily wastewater, first connect the inlet 103 to the sewage outlet, and transport the sewage to the interior of the filter component 201. The impact force generated by the sewage entering the filter component 201 causes the filter component 201 to start rotating, and intercepts the particles and impurities inside the sewage, separates the oil, and transports the oily wastewater to the oil-liquid separation unit 300. At the same time, the spray component 202 also starts to cooperate with the filter component 201 to extract water from the inside of the tank body 101, flush the surface of the filter component 201, and impact the impurities and particles attached to the inner wall of the filter component 201 together, and then collect them together. During the process of the spray component 202 flushing the filter component 201, it also cooperates with the sewage inside the filter component 201 to impact the filter component 201 so that the filter component 201 can accelerate the rotation speed, making the separation of particles inside the sewage cleaner and faster. At the same time, the water flushed by the spray component 202 is again transported to the interior of the tank body 101 together with the sewage that has been separated from the impurities for oil-liquid separation.

[0033] Because the density of grease is smaller than that of water, after the oily wastewater is transported to the inside of the tank body 101, the oil and liquid begin to separate automatically. At the same time, the air injection component 301 begins to transport air to the inside of the tank body 101, and generates bubbles at the bottom of the oily wastewater inside the tank body 101. The bubbles move upward from the bottom of the oily wastewater. During the movement of the bubbles, they come into contact with the grease and adsorb the grease, bringing the grease to the surface of the wastewater, so that the oily wastewater can be separated from the oil and liquid more quickly. Moreover, because the density of grease is smaller than that of wastewater, the grease floats on the surface of the wastewater. , and the oily wastewater is separated by the separation component 302, so that the wastewater at the bottom is discharged and transported to the inside of the tank body 101, while the grease at the top is intercepted and collected and transported uniformly. At the same time, the adjustment component 303 can adjust the separation effect of grease and wastewater up and down according to the amount of oily wastewater entering the inside of the tank body 101, thereby completing the oil-liquid separation. The separated wastewater is discharged from the discharge port 104, and the separated grease is discharged from the inside of the separation component 302, thereby completing the oil-liquid separation, and the impurity particles collected inside the filter component 201 can be cleaned uniformly by opening the inspection port 102.

[0034] Example 2, reference Figure 1-Figure 7, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the filter assembly 201 includes an interception plate 2011 inside the tank body 101, a delivery pipe 2012 arranged inside the interception plate 2011, an interception cylinder 2015 rotatably arranged on the outer diameter of one side of the delivery pipe 2012, and a baffle 2016 arranged on the interception cylinder 2015, and the baffle 2016 cooperates with the spray assembly 202, an annular filter plate 2013 is arranged inside one side of the delivery pipe 2012, and a collecting member 2014 is arranged on the outer diameter of the delivery pipe 2012, and the collecting member 2014 is connected to the annular filter plate 2013. The shaped filter plate 2013 passes through and is connected. When treating oily wastewater, the inlet 103 is connected to the sewage discharge port, so that the oily wastewater enters the interior of the interception cylinder 2015 along the inlet 103, and the impact force generated by the oily wastewater when entering the interception cylinder 2015 causes the interception cylinder 2015 to start rotating along the outer diameter of the conveying pipe 2012, and starts to filter and separate the particulate matter inside the oily wastewater, and at the same time discharges the sewage and grease together, and the particulate matter and impurities intercepted by the interception cylinder 2015 are all intercepted inside the interception cylinder 2015.

[0035] Compared with Example 1, the spray assembly 202 further includes a water pump 2021 provided on the top of the tank body 101, a water pipe 2022 provided at the output end of the water pump 2021, and a spray member 2023 provided at the other end of the water pipe 2022. The spray member 2023 cooperates with the baffle 2016 and the interception cylinder 2015. The input end of the water pump 2021 is provided with a conduit 2024, and the other end of the conduit 2024 is provided with an F-shaped pipe 2025. , and the F-type tube 2025 passes through and is connected to the tank body 101. When the interception cylinder 2015 filters and separates the particulate matter inside the oily wastewater, the water pump 2021 on the top of the tank body 101 also starts to work, and begins to extract the wastewater inside the tank body 101 through the conduit 2024 and the F-type tube 2025, and transports the wastewater to the spray part 2023 through the water pipe 2022, and then starts to spray the interception cylinder 2015 through the spray part 2023. The outer diameter is flushed. During the flushing process of the spray part 2023, the baffle 2016 is impacted, and the rotation of the intercepting cylinder 2015 itself is accelerated, so that the particulate matter in the oily wastewater can be better intercepted, and the spray part 2023 can also spray and flush the filter port of the intercepting cylinder 2015, so that the particulate matter on the inner wall of the intercepting cylinder 2015 is all impacted into the interior of the collecting part 2014 and collected uniformly by the collecting part 2014. Then the impacted water is filtered by the annular filter plate 2013 and returned to the delivery pipe 2012. It is then transported to the interior of the tank body 101 by the delivery pipe 2012 and transported to the interior of the tank body 101 together with the intercepting cylinder 2015 that has completed the filtration to start oil-liquid separation, and realize the flushing water circulation, reduce the waste of resources, and at the same time, the particulate matter and impurities inside the collecting part 2014 can be cleaned and collected through the inspection port 102.

[0036] During use, when treating oily wastewater, the inlet 103 is connected to the sewage discharge port, so that the oily wastewater enters the interior of the interception cylinder 2015 along the inlet 103, and the impact force generated by the oily wastewater when entering the interception cylinder 2015 causes the interception cylinder 2015 to start rotating along the outer diameter of the conveying pipe 2012, and starts to filter and separate the particulate matter inside the oily wastewater, and at the same time discharges the wastewater and grease together, and is transported to the interior of the tank body 101 for separation through the interception plate 2011 together with the oil, and the particulate matter and impurities intercepted by the interception cylinder 2015 are all intercepted inside the interception cylinder 2015.

[0037] When the interception cylinder 2015 is filtering and separating the particles in the oily wastewater, the water pump 2021 on the top of the tank body 101 also starts to work, and begins to extract the wastewater in the tank body 101 through the guide tube 2024 and the F-type tube 2025, and transports the wastewater to the spray part 2023 through the water pipe 2022, and then starts to flush the outer diameter of the interception cylinder 2015 through the spray part 2023. During the flushing process of the spray part 2023, the baffle 2016 is impacted, which speeds up the rotation of the interception cylinder 2015 itself, so that the particles in the oily wastewater can be better intercepted, and the spray part 2023 can also The filter port of the intercepting cylinder 2015 is sprayed and flushed, so that all the particulate matter on the inside of the intercepting cylinder 2015 is impacted into the inside of the collecting part 2014 and collected uniformly by the collecting part 2014. Then the water impacted is filtered by the annular filter plate 2013 and returns to the delivery pipe 2012. It is then transported to the inside of the tank body 101 by the delivery pipe 2012 and transported together with the filtered intercepting cylinder 2015 to the inside of the tank body 101 to start oil-liquid separation, and realize the flushing water circulation, thereby reducing the waste of resources. At the same time, the particulate matter and impurities inside the collecting part 2014 can also be cleaned and collected through the inspection port 102.

[0038] The remaining structures are the same as those of Example 1.

[0039] Example 3, reference Figures 1-10, which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the air injection component 301 includes a suction fan 3011 arranged on the top of the tank body 101, L-shaped tubes 3012 arranged at both ends of the suction fan 3011, and a blowing member 3013 arranged at the bottom of the L-shaped tube 3012, and the L-shaped tube 3012 passes through and is connected to the tank body 101. The separation component 302 includes a partition plate 1 3021 arranged inside the tank body 101, a partition plate 2 3022 arranged inside the tank body 101, and a partition plate 3023 arranged inside the tank body 101. 01 internal interception plate 2 3025, and interception plate 2 3025 cooperates with partition plate 2 3022, a U-shaped guardrail 3023 is provided on one side of partition plate 2 3022, and an oil drain pipe 3024 is provided on the U-shaped guardrail 3023, and the oil drain pipe 3024 passes through and is fixedly connected to the tank body 101. After the particulate matter inside the oily wastewater is filtered and separated by the cooperation of the filter component 201 and the spray component 202, the oily wastewater enters the interior of the tank body 101. At the same time, because the density of grease is smaller than that of water, the oil content of the oily wastewater itself is The grease starts to move upward and begins to separate naturally. The suction fan 3011 starts to work, sucking air from the outside and transporting the sucked air to the inside of the blowing member 3013 through the L-shaped tube 3012. A large number of bubbles are generated at the bottom of the oily wastewater through the blowing member 3013. The bubbles will move upward from the bottom of the oily wastewater, and in the process of moving, they will contact the grease in the wastewater, absorb the grease, and then bring it to the top of the wastewater to speed up the separation of the oil, so that all the grease will float away. It floats on the top of the sewage, and at the same time, the grease on the top is intercepted by the U-shaped baffle 3023, and the sewage at the bottom begins to be transported to the inside of the tank body 101 through the dividing plate 1 3021, so that the grease on the top of the sewage is intercepted by the U-shaped baffle 3023 and collected into the inside of the U-shaped baffle 3023 through the adjustment component 303, and the grease is collected and transported out through the oil discharge pipe 3024, while the sewage separated at the bottom is transported out of the discharge port 104 through the dividing plate 1 3021 and the intercepting plate 2 3025, thereby realizing oil-liquid separation and separate transportation.

[0040] Compared with Example 2, the adjustment component 303 further includes an electric push rod 3031 arranged at the top of the tank body 101, a U-shaped connecting rod 3032 arranged at the output end of the electric push rod 3031, and a movable plate 3033 arranged at the bottom of the U-shaped connecting rod 3032, and the movable plate 3033 is slidably connected inside the U-shaped fence 3023, and the U-shaped connecting rod 3032 is slidably connected to the L-shaped tube 3012, and a blocking tooth 3034 is provided on the top of the movable plate 3033. When the grease in the oily wastewater passes through the movable plate 3033, it is separated and transported to the inside of the U-shaped fence 3023 by the blocking teeth 3034 on the top of the movable plate 3033. At the same time, the electric push rod 3031 can adjust the movable plate 3033 to slide inside the U-shaped fence 3023 by driving the U-shaped connecting rod 3032, so as to ensure that the top of the movable plate 3033 is higher than the sewage and smaller than the grease, thereby ensuring the separation of sewage and grease.

[0041] During use, after the particulate matter inside the oily sewage is filtered and separated by the cooperation of the filter component 201 and the spray component 202, the oily sewage enters the interior of the tank body 101. At the same time, because the density of grease is smaller than that of water, the grease in the oily sewage itself begins to move upward and begins to separate naturally. The suction fan 3011 starts to work, sucking air from the outside and transporting the sucked air to the inside of the blowing member 3013 through the L-shaped tube 3012, and a large number of bubbles are generated at the bottom of the oily sewage through the blowing member 3013. The generated bubbles will move upward from the bottom of the oily sewage and mix with the oil in the sewage during the movement of the bubbles. The grease contacts the sewage, absorbs the grease, and then is brought to the top of the sewage to speed up the separation of oil and liquid, so that all the grease floats on the top of the sewage, and at the same time the grease on the top is intercepted by the U-shaped baffle 3023, and the sewage at the bottom begins to be transported to the inside of the tank body 101 through the dividing plate 1 3021, so that the grease on the top of the sewage is intercepted by the U-shaped baffle 3023 and collected into the inside of the U-shaped baffle 3023 through the adjustment component 303, and the grease is collected and transported out through the oil drain pipe 3024, and the sewage separated at the bottom is transported out to the discharge port 104 through the dividing plate 1 3021 and the intercepting plate 2 3025, so as to realize oil-liquid separation and separate transportation.

[0042] When the grease in the oily wastewater passes through the movable plate 3033, it is separated by the teeth 3034 on the top of the movable plate 3033 and transported to the inside of the U-shaped fence 3023. At the same time, the electric push rod 3031 can adjust the movable plate 3033 to slide inside the U-shaped fence 3023 by driving the U-shaped connecting rod 3032, so as to ensure that the top of the movable plate 3033 is higher than the wastewater and lower than the grease, thereby ensuring the separation of wastewater and grease, ensuring efficient separation, improving separation efficiency, reducing impurity residue, improving operational flexibility and adaptability, effectively treating oily wastewater, achieving rapid and efficient separation, and reducing resource waste and environmental pollution.

[0043] The remaining structures are the same as those of Example 2.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An oilfield produced oily wastewater pretreatment device comprising a tank unit (100) and a filter unit (200) for filtering solid particles, characterized in that: The invention also includes an oil-liquid separation unit (300), comprising a gas injection component (301) disposed on the top of the tank body (101) for accelerating oil-liquid separation, a separation component (302) disposed inside the gas injection component (301) for separating the oil-liquid, and an adjustment component (303) slidably disposed on the separation component (302) for adjusting the oil-liquid separation, wherein the adjustment component (303) rises as the oil-liquid inside the tank body unit (100) increases, thereby ensuring an optimal effect of oil-liquid separation; The air injection assembly (301) comprises a suction fan (3011) arranged on the top of the tank body (101), an L-shaped tube (3012) arranged at both ends of the suction fan (3011), and a blowing member (3013) arranged at the bottom of the L-shaped tube (3012), wherein the L-shaped tube (3012) penetrates and is connected to the tank body (101); The separation assembly (302) includes a first dividing plate (3021) disposed inside the tank body (101), a second dividing plate (3022) disposed inside the tank body (101), and a second intercepting plate (3025) disposed inside the tank body (101), wherein the second intercepting plate (3025) cooperates with the second dividing plate (3022); A U-shaped guardrail (3023) is provided on one side of the second dividing plate (3022), and an oil drain pipe (3024) is provided on the U-shaped guardrail (3023). The oil drain pipe (3024) passes through and is fixedly connected to the tank body (101).

2. The oilfield produced oily wastewater pretreatment equipment according to claim 1, characterized in that: The adjustment assembly (303) comprises an electric push rod (3031) arranged on the top of the tank body (101), a U-shaped connecting rod (3032) arranged at the output end of the electric push rod (3031), and a movable plate (3033) arranged at the bottom of the U-shaped connecting rod (3032), wherein the movable plate (3033) is slidably connected inside the U-shaped railing (3023), and the U-shaped connecting rod (3032) is slidably connected to the L-shaped tube (3012).

3. The oilfield produced oily wastewater pretreatment equipment according to claim 2, characterized in that: The top of the movable plate (3033) is provided with a blocking tooth (3034).

4. The oilfield produced oily wastewater pretreatment equipment according to claim 3, characterized in that: The filter unit (200) comprises a filter assembly (201) arranged inside the tank body (101) for intercepting solids inside the sewage, and a spray assembly (202) arranged on the top of the filter assembly (201) for spraying and flushing the filter assembly (201).

5. The oilfield produced oily wastewater pretreatment equipment according to claim 4, characterized in that: The filter assembly (201) comprises an interception plate (2011) inside the tank body (101), a delivery pipe (2012) arranged inside the interception plate (2011), and a device rotatably arranged on the delivery pipe (2012).

6. The oilfield produced oily wastewater pretreatment equipment according to claim 5, characterized in that: An interception cylinder (2015) is provided on the outer diameter of one side of the delivery pipe (2012); a baffle (2016) is provided on the interception cylinder (2015), and the baffle (2016) cooperates with the spray assembly (202).

7. The oilfield produced oily wastewater pretreatment equipment according to claim 6, characterized in that: An annular filter plate (2013) is provided inside one side of the delivery pipe (2012), a collecting piece (2014) is provided on the outer diameter of the delivery pipe (2012), and the collecting piece (2014) and the annular filter plate (2013) are penetrated and connected.

8. The oilfield produced oily wastewater pretreatment equipment according to claim 7, characterized in that: The spray assembly (202) comprises a water pump (2021) arranged on the top of the tank body (101), a water pipe (2022) arranged at the output end of the water pump (2021), and a spray member (2023) arranged at the other end of the water pipe (2022), wherein the spray member (2023) cooperates with the baffle (2016) and the interception cylinder (2015).

9. The oilfield produced oily wastewater pretreatment equipment according to claim 8, characterized in that: The input end of the water pump (2021) is provided with a conduit (2024), and the other end of the conduit (2024) is provided with an F-shaped tube (2025), and the F-shaped tube (2025) passes through and is connected to the tank body (101).

10. The oilfield produced oily wastewater pretreatment equipment according to claim 9, characterized in that: The invention comprises a tank body (101), an inlet (103) provided on one side of the tank body (101) for connecting sewage, an outlet (104) provided on the other side of the tank body (101) for draining water, and an inspection port (102) provided on the tank body (101) for inspecting and cleaning the interior of the tank body (101).

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