Oil extraction sewage treatment device

Abstract

The invention discloses an oil extraction sewage treatment device, and belongs to the technical field of sewage treatment.The oil extraction sewage treatment device comprises a shell assembly, the shell assembly comprises a treatment barrel and an upper cover arranged on the treatment barrel, and a supporting barrel attached to the bottom of the treatment barrel is arranged on the outer side of the bottom of the treatment barrel; a plurality of electric heaters corresponding to the outer wall of the treatment barrel are circumferentially distributed on the inner side of the supporting barrel, a feeding assembly is arranged at the top of the upper cover, a filtrate assembly is arranged on the treatment barrel, a driving assembly is arranged on the upper cover, a knocking assembly connected with the driving assembly is arranged on the inner side of the upper cover, and the knocking assembly is in movable contact with the filtrate assembly; a stirring assembly connected with the driving assembly is arranged in the treatment barrel, a precipitation assembly communicated with the middle of the inner side of the treatment barrel is arranged on the outer side of the treatment barrel, and the device has the advantages of impurity cleaning, reciprocating knocking to prevent blockage, uniform feeding, efficient demulsification, effective water and oil drainage, reliable structure, simplicity, convenience and practicability.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an apparatus for treating oilfield wastewater. Background Technology

[0002] During oilfield extraction, as the mixture of oil, gas, and water is lifted to the surface and enters an oil-gas-water separation and treatment station, after initial separation processes such as sedimentation and degassing, the resulting fluids are: crude oil (which is transported away), natural gas (which is recovered), and water – this is the initial form of "produced water," also known as "oilfield water." Due to its complex composition, produced water cannot be directly discharged or reinjected into the formation and requires treatment before further operations can proceed.

[0003] In the process of treating oilfield wastewater, the reliance on simple pipeline mixing or low-speed stirring prevents the demulsifier from making sufficient contact with the wastewater. This severely reduces the demulsifier's ability to disrupt the stability of the emulsified oil, hinders efficient oil-water separation, and affects subsequent treatment of the oilfield wastewater.

[0004] Therefore, there is a need to provide an oilfield wastewater treatment device to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an oilfield wastewater treatment device to solve the problems mentioned in the background.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An oilfield wastewater treatment device includes a shell assembly, the shell assembly comprising a treatment cylinder and a top cover disposed on the treatment cylinder, characterized in that a sludge outlet pipe is provided at the bottom of the treatment cylinder, a support cylinder is provided on the outer side of the bottom of the treatment cylinder and fitted to the bottom of the treatment cylinder, and a plurality of electric heaters corresponding to the outer wall of the treatment cylinder are circumferentially distributed on the inner side of the support cylinder, further comprising: A filtrate assembly is disposed on a processing cylinder. The filtrate assembly includes an inclined tube that penetrates the upper part of the processing cylinder. Several through holes are provided on the lower side wall of the inclined tube located inside the processing cylinder. The drive components are located on the top cover; A striking component is located inside the upper cover and connected to the drive component, and the striking component is in active contact with the filtrate component; An agitation assembly is located inside the processing cylinder and connected to the drive assembly. The agitation assembly is situated below the filtrate assembly. The agitation assembly includes a connecting ring movably sleeved on the outside of the inclined tube. The top of the connecting ring is connected to the bottom of the lifting plate. The bottom of the connecting ring is connected to a lifting screw movably installed inside the processing cylinder. Two supports are installed inside the processing cylinder, arranged vertically. A rotating cylinder is rotatably installed between the two supports. The rotating cylinder is movably sleeved on the outside of the lifting screw. The inner sidewall of the rotating cylinder has an internal thread that movably engages with the external thread of the lifting screw. Several agitation screens are circumferentially distributed and rotatably installed on the outer wall of the rotating cylinder.

[0007] As a further embodiment of the present invention, the top of the upper cover is provided with a feeding assembly communicating with the interior of the processing cylinder. The feeding assembly includes a storage tank disposed on the top of the upper cover, a tank cover disposed on the storage tank, a feed pipe communicating with the interior of the storage tank disposed on the tank cover, a partition disposed on the lower inner side of the storage tank, a turntable rotatably disposed between the bottom of the storage tank and the partition, and a receiving groove being provided at both ends of the turntable and the partition. A motor is installed on the tank cover, and a rotating shaft connected to the turntable is rotatably disposed inside the storage tank. One end of the rotating shaft is connected to the motor disposed on the tank cover. Several stirring rods located above the partition are distributed circumferentially on the rotating shaft. The two ends of the bottom of the storage tank are respectively connected to the corresponding ends of the processing cylinder through guide pipes.

[0008] As a further embodiment of the present invention, a second motor is installed at the lower end of the inclined tube, a rotating rod connected to the second motor is rotatably provided inside the inclined tube, a spiral blade is coiled on the rotating rod, and a plurality of through holes are opened on the spiral blade. A slag discharge frame corresponding to the opening end of the inclined tube is provided at the end of the processing cylinder away from the first through hole, and a water inlet pipe penetrating the top of the upper cover is connected to the end of the inclined tube near the second motor.

[0009] As a further embodiment of the present invention, the driving component includes a lifting plate that extends through and slides on the upper cover, a lifting frame is installed on the top of the lifting plate, a motor three is installed on the top of the upper cover, the output end of the motor three is connected to a turntable two, and the outer edge of the turntable two is provided with a lifting frame that slides in cooperation with the connecting column.

[0010] As a further embodiment of the present invention, a transmission gear is provided at one end of the agitating mesh plate near the rotating drum, and a fixed ring cylinder sleeved on the outside of the rotating drum is installed at the bottom of the support below. A guide ring groove is provided on the inner wall of the fixed ring cylinder, and a movable sleeve is movably provided between the rotating drum and the fixed ring cylinder. A sliding column is provided on the top outer wall of the movable sleeve, which slides in cooperation with the guide ring groove. Several slots corresponding to the transmission gears are opened in the circumference of the movable sleeve, and a rack that meshes with the corresponding transmission gear is provided on one side of the slot.

[0011] As a further embodiment of the present invention, the guide ring groove is configured as a wavy ring groove, and it includes at least one crest and one trough.

[0012] As a further embodiment of the present invention, the striking assembly includes two fixed cylinders disposed on the top inner side of the upper cover. The two fixed cylinders are symmetrically distributed about the lifting plate and each corresponds to the inclined tube. A side groove is provided on the side wall of the fixed cylinder. A striking rod that is slidably connected to the top of the inclined tube is disposed inside the fixed cylinder. A spring is connected between the fixed cylinder and the striking rod. A locking block is slidably engaged with the spring on the side of the striking rod near the lifting plate. Side frames are provided on both sides of the lifting plate. A locking block is slidably engaged with the locking block in the side frame. A spring is provided inside the corresponding side frame and connected between the lifting plate and the locking block.

[0013] As a further embodiment of the present invention, the first card block is provided with a V-shaped groove at one end near the second card block, and the second card block is provided with a V-shaped protrusion that movably engages with the V-shaped groove at one end near the first card block.

[0014] As a further embodiment of the present invention, a sedimentation assembly is provided on the outside of the processing cylinder and connected to the middle of the inner side of the processing cylinder. The sedimentation assembly includes a sedimentation tank located on the outside of the processing cylinder. The sedimentation tank is provided with a tank cover. The tank cover is connected to the middle of the inner side of the processing cylinder through a liquid guide pipe. An oil drain pipe is provided in the middle of the tank cover. A drain pipe is provided at the end of the sedimentation tank away from the liquid guide pipe. An inclined surface is provided at the bottom of the sedimentation tank. The lower end of the inclined surface is located at the end of the sedimentation tank near the drain pipe. A second mud outlet pipe is provided at the bottom of the end of the sedimentation tank near the drain pipe. An electrically controlled valve is provided at the second mud outlet pipe. A baffle is provided inside the sedimentation tank between the liquid guide pipe and the oil drain pipe. Several inclined plates are provided inside the sedimentation tank between the baffle and the drain pipe.

[0015] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: 1. In this invention, according to the actual needs of oilfield wastewater, the demulsifier can be simultaneously added to two places inside the treatment cylinder through the feeding component, so as to achieve uniform feeding of the demulsifier. The driving component drives the stirring component to rotate back and forth to make the oilfield wastewater and the demulsifier fully and evenly contact each other, which can fully and efficiently destroy the stability of the emulsified oil and promote oil-water separation. 2. In this invention, the filtrate assembly can guide external oilfield wastewater into the treatment tank, while cleaning up larger floating objects in the oilfield wastewater to prevent them from accumulating inside the treatment tank and affecting the subsequent treatment of the oilfield wastewater. 3. In this invention, the tapping component intermittently taps the filtrate component by connecting it to the driving component, which can effectively prevent impurities from accumulating on the filtrate component and thus affecting the introduction of oilfield wastewater, and facilitates the stable treatment of oilfield wastewater.

[0016] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a front sectional view of the housing assembly in this invention.

[0019] Figure 3 This is a schematic diagram of the structure of the filtrate assembly and the drive assembly in this invention.

[0020] Figure 4 In this invention Figure 3 A magnified view of part A.

[0021] Figure 5 This is a schematic diagram of the agitation component in the present invention.

[0022] Figure 6 This is an exploded view of the stirring component in this invention.

[0023] Figure 7 This is a cross-sectional view of the feeding component in this invention.

[0024] Figure 8 This is a cross-sectional view of the precipitation component in this invention.

[0025] Reference numerals: 1. Outer shell assembly; 101. Processing cylinder; 102. Top cover; 103. Mud discharge pipe one; 104. Support cylinder; 105. Column; 2. Feeding assembly; 201. Storage tank; 202. Tank cover; 203. Feed pipe; 204. Motor 1; 205. Rotating shaft; 206. Stirring rod; 207. Turntable 1; 208. Collection trough; 209. Baffle plate; 210. Guide pipe; 3. Filtration assembly; 301. Inclined tube; 302. Through hole one; 303. Motor two; 304. Water inlet pipe; 305. Rotating rod; 306. Spiral blade; 307. Through hole two; 308. Slag discharge frame; 4. Drive components; 401. Motor 3; 402. Turntable 2; 403. Connecting column; 404. Lifting frame; 405. Lifting plate; 5. Striking assembly; 501. Fixing cylinder; 502. Side groove; 503. Spring 1; 504. Striking rod; 505. Locking block 1; 506. Locking block 2; 507. Side frame; 508. Spring 2; 6. Agitator assembly; 601. Connecting ring; 602. Lifting screw; 603. Rotary drum; 604. Support; 605. Fixed ring cylinder; 606. Guide ring groove; 607. Agitator screen; 608. Transmission gear; 609. Movable sleeve; 610. Sliding column; 611. Groove; 612. Rack; 7. Electric heater; 8. Sedimentation assembly; 801. Sedimentation tank; 802. Tank cover; 803. Liquid guide pipe; 804. Baffle; 805. Inclined plate; 806. Drain pipe; 807. Oil drain pipe; 808. Sludge discharge pipe II. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0028] In one embodiment of the present invention, see Figures 1-2 An oilfield wastewater treatment device includes a housing assembly 1, which includes a treatment cylinder 101 and a top cover 102 disposed on the treatment cylinder 101. A sludge discharge pipe 103 is provided at the bottom of the treatment cylinder 101. A support cylinder 104, which is fitted to the bottom of the treatment cylinder 101, is provided on the outer side of the bottom of the treatment cylinder 101. A plurality of electric heaters 7, corresponding to the outer wall of the treatment cylinder 101, are circumferentially distributed on the inner side of the support cylinder 104. The top of the top cover 102 is provided with a component that connects to the interior of the treatment cylinder 101. The feed assembly 2 is connected to the processing cylinder 101. A filtrate assembly 3 is provided on the processing cylinder 101. A drive assembly 4 is provided on the upper cover 102. A striking assembly 5 connected to the drive assembly 4 is provided on the inner side of the upper cover 102. The striking assembly 5 is in active contact with the filtrate assembly 3. An agitation assembly 6 connected to the drive assembly 4 is provided inside the processing cylinder 101. The agitation assembly 6 is located below the filtrate assembly 3. A sedimentation assembly 8 connected to the middle of the inner side of the processing cylinder 101 is provided on the outer side of the processing cylinder 101.

[0029] In this embodiment, the filtrate assembly 3 can guide external oilfield wastewater into the treatment tank 101, while simultaneously cleaning larger floating objects from the wastewater to prevent their accumulation and subsequent treatment. Based on the actual needs of the oilfield wastewater, the feeding assembly 2 can simultaneously add demulsifier to two points inside the treatment tank 101, achieving uniform demulsifier feeding. The drive assembly 4, by driving the stirring assembly 6 to reciprocate, ensures thorough and uniform contact between the oilfield wastewater and the demulsifier, effectively breaking down the oilfield wastewater. The stability of the emulsified oil promotes oil-water separation. The striking component 5, connected to the driving component 4, intermittently strikes the filtrate component 3, effectively preventing impurities from accumulating on the filtrate component 3 and affecting the introduction of oily wastewater. This facilitates the stable treatment of oily wastewater. The sedimentation component 8 can perform sedimentation, oil discharge, and water drainage on the oily wastewater after demulsification, achieving effective treatment of oily wastewater. It has the effects of debris cleaning, reciprocating striking to prevent clogging, uniform feeding, efficient demulsification, effective drainage and oil discharge, reliable structure, and simple and practical operation.

[0030] Furthermore, the bottom of the support cylinder 104 is circumferentially distributed with several columns 105. These columns 105 provide stable support for the support cylinder 104, thereby providing stable support for the treatment cylinder 101. A corresponding electrically controlled valve is provided at the sludge outlet pipe 103. By controlling the opening and closing of this electrically controlled valve, the sludge accumulated at the bottom of the treatment cylinder 101 can be discharged, which helps to maintain an effective treatment space for oilfield wastewater inside the treatment cylinder 101.

[0031] In one embodiment of the present invention, see Figures 1-2 and Figure 7 The feeding assembly 2 includes a storage tank 201 disposed on the top of the upper cover 102. The storage tank 201 is provided with a tank cover 202. The tank cover 202 is provided with a feed pipe 203 communicating with the inside of the storage tank 201. A partition 209 is provided on the lower inner side of the storage tank 201. A turntable 207 is rotatably disposed between the bottom of the storage tank 201 and the partition 209. Both ends of the turntable 207 and the partition 209 are provided with a storage groove 208. The can lid 202 is equipped with a motor 204. The storage tank 201 is rotatably equipped with a rotating shaft 205 connected to a turntable 207. One end of the rotating shaft 205 is connected to the motor 204 on the can lid 202. The rotating shaft 205 has several stirring rods 206 distributed circumferentially above the partition 209. The two ends of the bottom of the storage tank 201 are respectively connected to the corresponding ends of the processing cylinder 101 through the guide pipe 210.

[0032] In this embodiment, in the initial state, the top of the feed tube 210 does not correspond to the receiving groove 208 located on the partition 209. The receiving groove 208 located on the partition 209 corresponds to the receiving groove 208 located on the turntable 207. The demulsifier will flow into the receiving groove 208 between the bottom of the storage tank 201 and the partition 209.

[0033] When demulsifier needs to be added into the treatment cylinder 101, motor 204 drives shaft 205 to rotate. Shaft 205, connected to turntable 207, drives the demulsifier flowing to the collection trough 208 at the end of turntable 207 to rotate. When the collection trough 208 at the end of turntable 207 corresponds to the top of guide pipe 210, the collection trough 208 at the end of turntable 207 does not correspond to the collection trough 208 on partition 209. At this time, the demulsifier in the collection trough 208 on turntable 207 does not contact the demulsifier in storage tank 201. The demulsifier will flow into the treatment cylinder 101 through guide pipe 210, realizing bidirectional uniform addition of demulsifier in treatment cylinder 101. This avoids the problem that existing demulsifiers can only be added in one position, and facilitates rapid contact between demulsifier and oilfield wastewater.

[0034] Furthermore, the rotating shaft 205 drives several stirring rods 206 to rotate synchronously, thereby agitating the demulsifier inside the storage tank 201 and facilitating the maintenance of the demulsifier's stability.

[0035] Furthermore, the feed pipe 203 facilitates the replenishment of demulsifier into the storage tank 201, allowing for the timely addition of demulsifier.

[0036] In one embodiment of the present invention, see Figures 1-3 The filtrate assembly 3 includes an inclined tube 301 that penetrates the upper part of the treatment cylinder 101. Several through holes 302 are provided on the lower side wall of the inclined tube 301 located inside the treatment cylinder 101. A motor 303 is installed at the lower end of the inclined tube 301. A rotating rod 305 connected to the motor 303 is rotatably provided inside the inclined tube 301. A spiral blade 306 is coiled on the rotating rod 305. Several through holes 307 are provided on the spiral blade 306. A slag discharge frame 308 corresponding to the opening end of the inclined tube 301 is provided at the end of the treatment cylinder 101 away from the through holes 302. A water inlet pipe 304 that penetrates the top of the upper cover 102 is connected to the end of the inclined tube 301 near the motor 303.

[0037] In this embodiment, the oilfield wastewater is introduced into the inclined pipe 301 through the inlet pipe 304, and the introduced oilfield wastewater can be initially filtered through several through holes 302.

[0038] After initial filtration, the floating debris remains inside the inclined tube 301. When the motor 303 is turned on, it drives the rotating rod 305 to rotate, which in turn drives the spiral blade 306 to rotate. The spiral blade 306 transports the floating debris located at the lower end of the inclined tube 301 to the upper opening of the inclined tube 301 by rotating. Then, it is discharged through the slag discharge frame 308, which facilitates the centralized collection and treatment of the floating debris.

[0039] It is worth noting that, since the spiral blade 306 has several through holes 307, the oil and water remaining on the surface of the floating object can be filtered during the outward transportation of the floating object, thereby reducing the residual oil and water on the surface of the discharged floating object and reducing the difficulty of orderly floating object treatment.

[0040] In one embodiment of the present invention, see Figures 1-3 , Figures 5-6 The drive assembly 4 includes a lifting plate 405 that passes through and slides on the upper cover 102. A lifting frame 404 is installed on the top of the lifting plate 405. A motor 3 401 is installed on the top of the upper cover 102. The output end of the motor 3 401 is connected to a turntable 2 402. The outer edge of the turntable 2 402 is provided with a lifting frame 404 that slides with the connecting column 403.

[0041] The agitation assembly 6 includes a connecting ring 601 movably sleeved on the outside of the inclined tube 301. The top of the connecting ring 601 is connected to the bottom of the lifting plate 405. The bottom of the connecting ring 601 is connected to a lifting screw 602 movably disposed inside the processing cylinder 101. Two supports 604 distributed vertically are installed inside the processing cylinder 101. A rotating cylinder 603 is rotatably disposed between the two supports 604. The rotating cylinder 603 is movably sleeved on the outside of the lifting screw 602. The inner wall of the rotating cylinder 603 is provided with an internal thread that movably engages with the external thread of the lifting screw 602. Several agitation mesh plates 6 are circumferentially distributed and rotatably disposed on the outer wall of the rotating cylinder 603. 07. The agitating mesh plate 607 is provided with a transmission gear 608 at one end near the rotating drum 603. The bottom of the support 604 located above is equipped with a fixed ring cylinder 605 sleeved on the outside of the rotating drum 603. The inner wall of the fixed ring cylinder 605 is provided with a guide ring groove 606. A movable sleeve 609 is movably provided between the rotating drum 603 and the fixed ring cylinder 605. The top outer wall of the movable sleeve 609 is provided with a sliding column 610 that slides in cooperation with the guide ring groove 606. The movable sleeve 609 is provided with a plurality of slots 611 corresponding to the transmission gear 608 in the circumferential direction. One side of the slot 611 is provided with a rack 612 that meshes with the corresponding transmission gear 608.

[0042] In this embodiment, motor 3 401 drives turntable 2 402 to rotate. Turntable 2 402 drives connecting ring 601 to reciprocate up and down through sliding engagement between lifting frame 404 and connecting column 403, and sliding engagement between lifting plate 405 and upper cover 102. Connecting ring 601 drives lifting screw 602 to reciprocate up and down synchronously. Lifting screw 602 drives rotating drum 603 to reciprocate through movable engagement between its external thread and internal thread inside rotating drum 603, and rotational engagement between rotating drum 603 and bracket 604. Rotating drum 603 drives several stirring screens 607 to rotate synchronously through movable connection with stirring screen 607. This can effectively stir the oilfield wastewater and demulsifier inside treatment drum 101, effectively destroy the stability of emulsified oil, and facilitate oil-water separation.

[0043] Furthermore, since the slot 611 corresponds to the transmission gear 608, the rotating drum 603 drives the transmission gear 608 to rotate synchronously by driving the agitator plate 607 to rotate synchronously. The transmission gear 608 drives the movable sleeve 609 to rotate synchronously by corresponding to the slot 611. Since the position of the fixed ring cylinder 605 is fixed, the movable sleeve 609 achieves its own up-and-down reciprocating lifting and lowering by sliding cooperation between the sliding column 610 and the guide ring groove 606.

[0044] Furthermore, during the lifting and lowering of the movable sleeve 609, the movable sleeve 609 drives the rack 612 to lift and lower synchronously, and the rack 612 and the transmission gear 608 mesh to drive the agitator 607 to swing back and forth. The angle of the agitator 607 can be flexibly adjusted during the rotation of the agitator 607 around the central axis of the rotating drum 603, so as to achieve full contact between the oilfield wastewater and the demulsifier, which can efficiently destroy the stability of the emulsified oil and achieve rapid oil-water separation.

[0045] It is worth noting that the guide ring groove 606 is designed as a wavy ring groove, and it contains at least one crest and one trough, which can realize flexible adjustment of the angle of the stirring screen 607, and can efficiently stir the oilfield wastewater and demulsifier, thereby improving the demulsification effect of the oilfield wastewater.

[0046] In one embodiment of the present invention, see Figures 1-4The striking assembly 5 includes two fixed cylinders 501 disposed on the top inner side of the upper cover 102. The two fixed cylinders 501 are symmetrically distributed about the lifting plate 405 and each corresponds to the inclined tube 301. A side groove 502 is provided on the side wall of the fixed cylinder 501. A striking rod 504 is slidably disposed in the fixed cylinder 501 and is in movable contact with the top of the inclined tube 301. A spring 503 is connected between the fixed cylinder 501 and the striking rod 504. A locking block 505 is slidably engaged with the spring 503 on the side of the striking rod 504 near the lifting plate 405. A side frame 507 is provided on both side walls of the lifting plate 405. A locking block 506 is slidably disposed in the side frame 507 and is movably engaged with the locking block 505. A spring 508 disposed on the inner side of the corresponding side frame 507 is connected between the lifting plate 405 and the locking block 506.

[0047] In this embodiment, motor 3 401 drives turntable 2 402 to rotate. Turntable 2 402 drives the lifting plate 405 to reciprocate up and down by sliding engagement between the lifting frame 404 and the connecting column 403 and the lifting plate 405 and the upper cover 102. The lifting plate 405 drives the locking block 2 506 to reciprocate up and down synchronously by connecting to the side frame 507 and sliding engagement between the side frame 507 and the locking block 2 506.

[0048] During the downward movement of the second locking block 506, the first spring 503 is at its original length, the bottom end of the striking rod 504 is in contact with the top of the inclined tube 301, the second spring 508 is at its original length, and the second locking block 506 is away from the lifting plate 405. When the second locking block 506 moves downward and begins to contact the first locking block 505, since the position of the first locking block 505 is fixed, it cannot move horizontally. The first locking block 505 pushes the second locking block 506 closer to the lifting plate 405 through movable contact with the second locking block 506 and sliding cooperation between the second locking block 506 and the side frame 507. The second spring 508 is stressed and retracts. When the second locking block 506 moves down to the lowest point, the second locking block 506 just engages with the first locking block 505, which can realize the synchronous movement of the first locking block 505 and the second locking block 506.

[0049] During the upward movement of the second locking block 506, the second locking block 506 engages with the first locking block 505, and the striking rod 504 slides against the fixed cylinder 501, causing the striking rod 504 to move upward. The first spring 503 is then stressed and contracts. When the first locking block 505 reaches the top of the side groove 502, it can no longer move upward; its height is relatively fixed. The second locking block 506 continues to move upward, and the first locking block 505 pushes it closer to the lifting plate 405 through its active contact with the second locking block 506 and the sliding engagement between the second locking block 506 and the side frame 507. The second 508 is subjected to force and retracts; after the second 506 and the first 505 separate, the first 505 no longer has an upward pushing force, the first 503 extends downward and pushes the striking rod 504 downward. The striking rod 504 strikes the top of the inclined tube 301 by moving downward, which can shake off the impurities blocking the through hole 302, facilitating the continuous introduction of oilfield wastewater; at the same time, the second 506 moves upward, the second 508 extends outward and pushes the second 506 away from the lifting plate 405, which can realize the reset of the second 506, facilitating the subsequent cyclic lifting and lowering operation of the second 506.

[0050] It is worth noting that the first card block 505 has a V-shaped groove at one end near the second card block 506, and the second card block 506 has a V-shaped protrusion that movably engages with the V-shaped groove at one end near the first card block 505. Through the engagement between the V-shaped groove and the V-shaped protrusion, a stable engagement between the first card block 505 and the second card block 506 can be achieved.

[0051] In one embodiment of the present invention, see Figure 1 and Figure 8 The sedimentation assembly 8 includes a sedimentation tank 801 located outside the processing cylinder 101. The sedimentation tank 801 is provided with a tank cover 802, which is connected to the middle of the inner side of the processing cylinder 101 through a liquid guide pipe 803. An oil drain pipe 807 is provided in the middle of the tank cover 802. A drain pipe 806 is provided at the end of the sedimentation tank 801 away from the liquid guide pipe 803. The bottom of the sedimentation tank 801 is provided with an inclined surface, the lower end of which is located at the end of the sedimentation tank 801 near the drain pipe 806. A second mud outlet pipe 808 is provided at the bottom of the end of the sedimentation tank 801 near the drain pipe 806. An electrically controlled valve is provided at the second mud outlet pipe 808. A baffle 804 is provided inside the sedimentation tank 801 between the liquid guide pipe 803 and the oil drain pipe 807. Several inclined plates 805 are provided inside the sedimentation tank 801 between the baffle 804 and the drain pipe 806.

[0052] In this embodiment, the demulsified oilfield wastewater is introduced into the sedimentation tank 801 through the liquid guide pipe 803. The impurities in the oilfield wastewater will slowly settle on the lower side of the slope. By opening the corresponding electrically controlled valve, the settled impurities will be discharged through the mud outlet pipe 808. Through the set of several inclined plates 805, the fluctuation of the oilfield wastewater can be reduced in multiple stages, which facilitates the sedimentation of the oilfield wastewater. Through the corresponding drain pipe 806 and oil discharge pipe 807, the drainage and oil discharge operations can be realized.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oilfield wastewater treatment device, comprising a housing assembly (1), the housing assembly (1) including a treatment cylinder (101) and a top cover (102) disposed on the treatment cylinder (101), characterized in that, The bottom of the processing cylinder (101) is provided with a mud outlet pipe (103), and the outer side of the bottom of the processing cylinder (101) is provided with a support cylinder (104) that fits against the bottom of the processing cylinder (101). The inner circumferential side of the support cylinder (104) is provided with a plurality of electric heaters (7) corresponding to the outer wall of the processing cylinder (101), and the processing cylinder (101) also includes: The filtrate assembly (3) is located on the processing cylinder (101). The filtrate assembly (3) includes an inclined tube (301) that penetrates the upper part of the processing cylinder (101). The lower side wall of the inclined tube (301) located inside the processing cylinder (101) has several through holes (302). The drive component (4) is located on the upper cover (102); The striking component (5) is located inside the upper cover (102) and connected to the driving component (4). The striking component (5) is in active contact with the filtrate component (3). A stirring assembly (6) is located inside the processing cylinder (101) and connected to the driving assembly (4). The stirring assembly (6) is located below the filtrate assembly (3). The stirring assembly (6) includes a connecting ring (601) movably sleeved on the outside of the inclined tube (301). The top of the connecting ring (601) is connected to the bottom of the lifting plate (405). The bottom of the connecting ring (601) is connected to a lifting screw (602) movably installed inside the processing cylinder (101). Two supports (604) are installed inside the processing cylinder (101) and are distributed vertically. A rotating cylinder (603) is rotatably installed between the two supports (604). The rotating cylinder (603) is movably sleeved on the outside of the lifting screw (602). The inner side wall of the rotating cylinder (603) is provided with an internal thread that movably engages with the external thread of the lifting screw (602). Several stirring screens (607) are circumferentially distributed and rotatably installed on the outer wall of the rotating cylinder (603).

2. The oilfield wastewater treatment device according to claim 1, characterized in that, The top of the cover (102) is provided with a feeding assembly (2) that communicates with the inside of the processing cylinder (101). The feeding assembly (2) includes a storage tank (201) located on the top of the cover (102). The storage tank (201) is provided with a lid (202). The lid (202) is provided with a feed pipe (203) that communicates with the inside of the storage tank (201). A partition (209) is provided on the lower inner side of the storage tank (201). A turntable (207) is rotatably provided between the bottom of the storage tank (201) and the partition (209). The turntable (207) and the partition... (209) has a storage slot (208) at both ends. A motor (204) is installed on the can cover (202). A rotating shaft (205) connected to a turntable (207) is rotatably installed inside the storage tank (201). One end of the rotating shaft (205) is connected to the motor (204) on the can cover (202). Several stirring rods (206) located above the partition (209) are distributed circumferentially on the rotating shaft (205). The two ends of the bottom of the storage tank (201) are respectively connected to the corresponding ends of the processing cylinder (101) through the guide pipe (210).

3. The oilfield wastewater treatment device according to claim 1, characterized in that, The lower end of the inclined tube (301) is equipped with a second motor (303). Inside the inclined tube (301), there is a rotating rod (305) connected to the second motor (303). A spiral blade (306) is coiled on the rotating rod (305). Several through holes (307) are opened on the spiral blade (306). The end of the processing cylinder (101) away from the first through hole (302) is provided with a slag discharge frame (308) corresponding to the opening end of the inclined tube (301). The end of the inclined tube (301) near the second motor (303) is connected to a water inlet pipe (304) that penetrates the top of the cover (102).

4. The oilfield wastewater treatment device according to claim 1, characterized in that, The drive assembly (4) includes a lifting plate (405) that passes through and slides on the upper cover (102). A lifting frame (404) is installed on the top of the lifting plate (405). A motor (401) is installed on the top of the upper cover (102). The output end of the motor (401) is connected to a turntable (402). The outer edge of the turntable (402) is provided with a lifting frame (404) that slides with the connecting column (403).

5. The oilfield wastewater treatment device according to claim 1, characterized in that, The agitating mesh plate (607) is provided with a transmission gear (608) at one end near the rotating drum (603). A fixed ring cylinder (605) sleeved on the outside of the rotating drum (603) is installed at the bottom of the support (604) below. A guide ring groove (606) is provided on the inner wall of the fixed ring cylinder (605). A movable sleeve (609) is movably provided between the rotating drum (603) and the fixed ring cylinder (605). A sliding column (610) that slides in cooperation with the guide ring groove (606) is provided on the top outer wall of the movable sleeve (609). Several slots (611) corresponding to the transmission gear (608) are opened around the movable sleeve (609). A rack (612) that meshes with the corresponding transmission gear (608) is provided on one side of the slot (611).

6. The oilfield wastewater treatment device according to claim 5, characterized in that, The guide annular groove (606) is configured as a wavy annular groove, and it contains at least one crest and one trough.

7. The oilfield wastewater treatment device according to claim 4, characterized in that, The striking assembly (5) includes two fixed cylinders (501) disposed on the top inner side of the upper cover (102). The two fixed cylinders (501) are symmetrically distributed about the lifting plate (405) and each corresponds to the inclined tube (301). A side groove (502) is provided on the side wall of the fixed cylinder (501). A striking rod (504) is slidably disposed inside the fixed cylinder (501) and is in active contact with the top of the inclined tube (301). A spring is connected between the fixed cylinder (501) and the striking rod (504). Spring 1 (503), the striking rod (504) is close to the lifting plate (405) and the locking block 1 (505) is slidably engaged with spring 1 (503). The lifting plate (405) is provided with side frames (507) on both sides. The side frame (507) is slidably provided with locking block 2 (506) which is movably engaged with locking block 1 (505). Spring 2 (508) is provided inside the corresponding side frame (507) between the lifting plate (405) and locking block 2 (506).

8. The oilfield wastewater treatment apparatus according to claim 7, characterized in that, The first card block (505) has a V-shaped groove at one end near the second card block (506), and the second card block (506) has a V-shaped protrusion that movably engages with the V-shaped groove at one end near the first card block (505).

9. The oilfield wastewater treatment device according to claim 1, characterized in that, The processing cylinder (101) is provided with a sedimentation assembly (8) on the outside, which is connected to the middle of the inner side of the processing cylinder (101). The sedimentation assembly (8) includes a sedimentation tank (801) located on the outside of the processing cylinder (101). The sedimentation tank (801) is provided with a tank cover (802). The tank cover (802) is connected to the middle of the inner side of the processing cylinder (101) through a liquid guide pipe (803). An oil drain pipe (807) is provided in the middle of the tank cover (802). A drain pipe (806) is provided at the end of the sedimentation tank (801) away from the liquid guide pipe (803). The sedimentation... The bottom of the sedimentation tank (801) is provided with a slope, the lower end of which is located at one end of the sedimentation tank (801) near the drain pipe (806). The bottom of the sedimentation tank (801) near the drain pipe (806) is provided with a second mud outlet pipe (808), and an electrically controlled valve is provided at the second mud outlet pipe (808). Inside the sedimentation tank (801) is a baffle (804) located between the liquid guide pipe (803) and the oil drain pipe (807). Inside the sedimentation tank (801) are several inclined plates (805) located between the baffle (804) and the drain pipe (806).

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