Continuous treatment device for petroleum drilling wastewater and method of use thereof

Abstract

The present application relates to the technical field of petroleum drilling sewage treatment device, and is a petroleum drilling sewage continuous treatment device and a use method thereof, wherein the former comprises a flocculation tank, a sedimentation tank, a linkage mechanism and a stirring mechanism; the flocculation tank is arranged on one side of the sedimentation tank and is communicated with the sedimentation tank through a communication groove; a fixed plate is installed on the top end of the flocculation tank; a right-angle connector is installed on the fixed plate; the linkage mechanism is arranged on the inner side of the flocculation tank below the right-angle connector; the flocculation tank is provided with the stirring mechanism; the linkage mechanism can drive the stirring mechanism; and the front side of the stirring mechanism is provided with a transmission mechanism. The present application has reasonable and compact structure and is convenient to use; the linkage mechanism drives the stirring mechanism, so that the sewage and treatment agents entering the flocculation tank can be fully mixed and evenly distributed; the feeding mechanism automatically feeds the flocculation tank, thereby improving the treatment capacity and effect of the sewage.

Description

Technical Field

[0001] This invention relates to the technical field of oil drilling wastewater treatment equipment, specifically a continuous oil drilling wastewater treatment device and its usage method. Background Technology

[0002] Petroleum is a mixture of gaseous, liquid, and solid hydrocarbons that occurs naturally. During the drilling and extraction process, a significant amount of drilling wastewater is generated. To prevent this wastewater from being directly discharged and polluting rivers or oceans, it needs to be treated using wastewater treatment equipment.

[0003] Patent CN100551846C discloses a continuous treatment process for oil drilling wastewater, characterized by the following steps: coagulation, coagulation aid, sedimentation, filtration, oxidation adsorption, and discharge meeting standards. The specific steps are as follows: a. Coagulation: Coagulants are added to the wastewater in the coagulation tank, causing the coagulants to coagulate with the suspended matter in the wastewater and form flocculent bodies, which are then removed after settling. b. Coagulation aid: After the wastewater obtained in step a is mixed evenly, add an alkaline agent to the coagulation aid tank to adjust the pH value to 6-8, and then add the coagulation aid. c. Sedimentation: In the sedimentation tank, the alum flocs are separated from the sewage by natural gravity and settled to the bottom of the sedimentation tank. The upper part of the sedimentation tank is the clear water after sedimentation, and the alum flocs are discharged out of the tank. d. Filtration: The clear water from the sedimentation tank in step c is filtered through a filter layer; e. Oxidation and adsorption: An oxidant is added to the purified water obtained in step d to oxidize the residual organic matter in the wastewater, and then an adsorbent is added; f. Discharge in compliance with standards: Detect the pH change of the purified water obtained in step e, adjust the amount of oxidant added in step e, and discharge in compliance with standards.

[0004] This invention effectively solves the problems of difficult integration between unit treatments, poor treatment effect, and discontinuous wastewater treatment in oil drilling wastewater. It not only reduces the color and other pollutants in wastewater, but also effectively removes pollutants dissolved in wastewater. Furthermore, it applies chemical coagulation sedimentation, catalytic oxidation, and physical adsorption into a single process, achieving continuous and in-depth wastewater treatment that meets discharge standards.

[0005] However, in the above scheme, when the sewage is settled and flocculated in the flocculation tank, or when the sewage is treated by other means such as disinfection and purification, it is necessary to add an appropriate concentration of agent to the flocculation tank. In this process, the agent needs to be added manually, which is cumbersome and inconvenient. It is not possible to carry out sewage treatment operations continuously, resulting in low work efficiency. Moreover, after the agent is added, the sewage needs to be mixed and stirred manually, which is time-consuming and labor-intensive. Summary of the Invention

[0006] This invention provides a continuous treatment device for oil drilling wastewater and its usage method, which overcomes the shortcomings of the prior art and can effectively solve the problems of time-consuming, labor-intensive, and low construction efficiency of existing oil drilling wastewater treatment devices that require manual addition of chemicals and manual stirring.

[0007] One of the technical solutions of the present invention is achieved through the following measures: a continuous treatment device for oil drilling wastewater, comprising a flocculation tank, a sedimentation tank, a linkage mechanism, and a stirring mechanism. A flocculation tank is provided on one side of the sedimentation tank, and the flocculation tank and the sedimentation tank are connected by a connecting channel. A fixing plate is installed at the top of the flocculation tank, and a right-angle connecting pipe is installed on the fixing plate. A linkage mechanism is provided on the inner side of the flocculation tank corresponding to the position below the right-angle connecting pipe. A stirring mechanism is provided on the flocculation tank. The linkage mechanism can drive the stirring mechanism. A transmission mechanism is provided on the front side of the stirring mechanism. A feeding mechanism is installed on the outer wall of the flocculation tank on both the left and right sides corresponding to the transmission mechanism. The stirring mechanism can drive the transmission mechanism to pull the feeding mechanism to automatically feed materials into the flocculation tank.

[0008] The following are further optimizations and / or improvements to the above-mentioned technical solution: Preferably, the linkage mechanism includes a water wheel and a first gear. The water wheel and the first gear are connected by transmission and are coaxially rotatably installed inside the flocculation tank. A second gear meshes with the lower side of the first gear. The second gear is rotatably installed inside the flocculation tank. The lower port of the right-angle pipe is offset from the vertical centerline of the water wheel.

[0009] Preferably, the stirring mechanism includes two first sprockets that are rotatably mounted on the outer wall of the flocculation tank at left and right intervals. The two first sprockets are coaxially connected to a stirring shaft located inside the flocculation tank. Stirring rods are evenly distributed on the outer wall of the stirring shaft. A second sprocket is rotatably mounted on the outer wall of the flocculation tank between the two first sprockets. The second sprocket is connected to a second gear and is coaxial. The two first sprockets and the second sprocket are connected by a chain drive.

[0010] Preferably, the transmission mechanism includes a turntable fixed coaxially with the second sprocket, a strip frame is provided on the front side of the turntable, a toggle shaft is installed on the front side of the turntable, the toggle shaft is located inside the strip frame, right-angle rods are installed at the upper and lower ends of the strip frame, and limit sliders are installed at the rear ends of the right-angle rods, and a limit groove is provided on the outer wall of the flocculation tank to cooperate with the limit slider.

[0011] Preferably, the limiting slider is a T-shaped slider, and the cross-sectional shape of the limiting groove is T-shaped.

[0012] Preferably, the feeding mechanism includes an installation plate installed on the outer wall of the flocculation tank. A dosing component is provided at the upper end of the installation plate. The dosing component includes a dosing tank. A Z-shaped pipe connects the dosing tank to the flocculation tank. A straight pipe is connected to one side of the Z-shaped pipe. A piston is slidably installed inside the straight pipe. A pull rod is connected between the piston and the strip frame. One-way valves are provided in the Z-shaped pipes at positions above and below the straight pipe.

[0013] Preferably, the dispensing assembly further includes a rotating shaft rotatably connected to the inside of the dispensing box, with stirring rods evenly distributed on the outer wall of the rotating shaft, one end of the rotating shaft extending out of the outside of the dispensing box and fixedly installed with a winding roller, a pull rope wound on the winding roller, and the other end of the pull rope connected to the side wall of the strip frame.

[0014] Preferably, a coil spring is installed on the rotating shaft between the dispensing box and the take-up roller, and a fixed cover is provided on the outside of the coil spring and rotatably mounted on the rotating shaft. The two ends of the coil spring are respectively connected to the rotating shaft and the fixed cover.

[0015] The second technical solution of the present invention is achieved through the following measures: A method of use, implemented according to the following steps: First, a suitable concentration of reagent solution for wastewater treatment is pre-stored inside the dosing assembly. One end of the right-angle connector is connected to an external wastewater discharge pipe, allowing oil drilling wastewater to be discharged into the flocculation tank through the right-angle connector. The wastewater rushing out from the lower end of the right-angle connector impacts the water wheel, causing the water wheel to drive the first gear to rotate under the impact of the wastewater. The first gear then drives the second gear to rotate. Second, during the rotation of the second gear, the second sprocket rotates synchronously. The chain drives the two first sprockets to rotate, which in turn drive the two stirring shafts to rotate. The stirring shafts drive the stirring rods to rotate, thus rotating and stirring the solution inside the flocculation tank. Third, during the rotation of the second sprocket, since the second sprocket is coaxially fixed with the turntable, the rotation of the second sprocket also drives the turntable to rotate. The turntable drives the actuating shaft to revolve, which in turn pushes the strip frame left and right, causing the strip frame to drive the right-angle rod to move back and forth. The limiting slider slides inside the limiting groove to constrain and limit the reciprocating movement of the strip frame; in the fourth step, during the reciprocating movement of the strip frame, the piston can be moved back and forth inside the straight tube by the pull rod. When the piston moves closer to the turntable, the solution stored inside the dosing component can be extracted through the Z-shaped tube. At this time, the one-way valve at the connection between the Z-shaped tube and the dosing component opens, and the other one-way valve closes, and the medicine is drawn into the straight tube. When the piston moves away from the turntable, the medicine temporarily stored inside the straight tube can be transported to the flocculation stage through the Z-shaped tube. Inside the pool, the wastewater is mixed with the wastewater entering the flocculation pool. The completely mixed wastewater enters the sedimentation tank through the connecting channel for sedimentation. During the reciprocating movement of the bar frame, the pull rope can be dragged. When the pull rope is pulled, the pull rope is released from the take-up roller and drives the take-up roller to rotate. The take-up roller drives the rotating shaft to rotate, tightening the coil spring. This causes the rotating shaft to drive the stirring rod to stir the medicine solution inside the dosing tank. When the pull rope is removed, under the action of the coil spring, the rotating shaft drives the take-up roller and the stirring rod to reverse, and the take-up roller rewinds the pull rope.

[0016] The present invention has a reasonable and compact structure and is easy to use. It drives the stirring mechanism through a linkage mechanism, thereby enabling the wastewater and treatment agents entering the flocculation tank to be fully and evenly mixed. The feeding mechanism automatically feeds the flocculation tank, improving the wastewater treatment capacity and effect. Attached Figure Description

[0017] Appendix Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention.

[0018] Appendix Figure 2 This is a three-dimensional structural diagram of the linkage mechanism.

[0019] Appendix Figure 3 This is a three-dimensional structural diagram of the stirring mechanism.

[0020] Appendix Figure 4 For the appendix Figure 1 A magnified structural diagram of point A in the middle.

[0021] Appendix Figure 5 This is a three-dimensional structural diagram of the feeding mechanism.

[0022] Appendix Figure 6 For the appendix Figure 5 A magnified structural diagram at point B in the middle.

[0023] Appendix Figure 7 This is an enlarged structural diagram of the bar frame and the toggle shaft.

[0024] The codes in the attached diagram are as follows: 1. Flocculation tank; 2. Sedimentation tank; 3. Connecting channel; 4. Linkage mechanism; 41. Water wheel; 42. First gear; 43. Second gear; 5. Transmission mechanism; 51. Right-angle rod; 52. Limiting slider; 53. Limiting groove; 54. Turntable; 55. Strip frame; 56. Actuating shaft; 6. Feeding mechanism; 61. Z-shaped tube; 62. Straight tube; 63. Piston; 64. Pull rod; 65. Mounting plate; 66. Dosing assembly; 661. Dosing box; 662. Rotating shaft; 663. Stirring rod; 664. Coil spring; 665. Fixing cover; 666. Pull rope; 667. Winding roller; 7. Fixing plate; 8. Right-angle connecting pipe; 9. Stirring mechanism; 91. Stirring shaft; 92. Stirring rod; 93. First sprocket; 94. Second sprocket; 95. Chain. Detailed Implementation

[0025] The present invention is not limited to the following embodiments, and the specific implementation can be determined according to the technical solution of the present invention and the actual situation.

[0026] In this invention, for ease of description, the description of the relative positions of the components is based on the appendix to the specification. Figure 1 The layout is described using a diagrammatic method, such as front, back, top, bottom, left, right, etc. The positional relationships are determined based on the layout direction of the attached diagram in the instruction manual.

[0027] The present invention will be further described below with reference to embodiments and accompanying drawings: Example 1: As shown in the attached document Figure 1-7As shown, the continuous treatment device for oil drilling wastewater includes a flocculation tank 1, a sedimentation tank 2, a linkage mechanism 4, and a stirring mechanism 9. The flocculation tank 1 is located on one side of the sedimentation tank 2, and the flocculation tank 1 and the sedimentation tank 2 are connected by a connecting channel 3. A fixing plate 7 is installed at the top of the flocculation tank 1, and a right-angle pipe 8 is installed on the fixing plate 7. The linkage mechanism 4 is located on the inner side of the flocculation tank 1 below the right-angle pipe 8, and the stirring mechanism 9 is located on the flocculation tank 1. The linkage mechanism 4 can drive the stirring mechanism 9. A transmission mechanism 5 is located in front of the stirring mechanism 9. Feeding mechanisms 6 are installed on the outer walls of the flocculation tank 1 on both sides of the transmission mechanism 5. The stirring mechanism 9 can drive the transmission mechanism 5 to pull the feeding mechanism 6 to automatically feed materials into the flocculation tank 1.

[0028] During the process of using oil drilling wastewater to drive the linkage mechanism 4, the linkage mechanism 4 can drive the stirring mechanism 9, thereby mixing and stirring the solution inside the flocculation tank 1. The feeding mechanism 6 automatically adds the chemical solution, reducing the labor intensity of the operators and maintaining continuous operation.

[0029] The above-mentioned continuous treatment unit for oil drilling wastewater can be further optimized and / or improved according to actual needs: Example 2: As shown in the attached document Figure 2 As shown, the linkage mechanism 4 includes a water wheel 41 and a first gear 42. The water wheel 41 and the first gear 42 are connected by transmission and are coaxially rotatably installed inside the flocculation tank 1. A second gear 43 is meshed on the lower side of the first gear 42. The second gear 43 is rotatably installed inside the flocculation tank 1. The lower port of the right-angle pipe 8 is offset from the vertical centerline of the water wheel 41.

[0030] One end of the right-angle connector 8 is connected to an external sewage pipe, so that oil drilling sewage can be discharged into the inner side of the flocculation tank 1 through the right-angle connector 8. The sewage flushed out from the lower end of the right-angle connector 8 can impact the water wheel 41, so that the water wheel 41 can drive the first gear 42 to rotate under the impact of the sewage. The first gear 42 drives the second gear 43 to rotate.

[0031] Example 3: As shown in the attached document Figure 2 , 3 As shown, the stirring mechanism 9 includes two first sprockets 93 that are rotatably mounted on the outer wall of the flocculation tank 1 at left and right intervals. Both first sprockets 93 are coaxially connected to a stirring shaft 91 located inside the flocculation tank 1. Stirring rods 92 are evenly distributed on the outer wall of the stirring shaft 91. A second sprocket 94 is rotatably mounted on the outer wall of the flocculation tank 1 between the two first sprockets 93. The second sprocket 94 is driven and coaxially connected to the second gear 43. The two first sprockets 93 and the second sprocket 94 are driven and connected by a chain 95.

[0032] During the rotation of the second gear 43, the second sprocket 94 can be driven to rotate synchronously, thereby driving the two first sprockets 93 to rotate through the chain 95. The two first sprockets 93 drive the two stirring shafts 91 to rotate, and the stirring shafts 91 drive the stirring rods 92 to rotate, thus rotating and stirring the solution inside the flocculation tank 1.

[0033] Example 4: As shown in the appendix Figure 4 , 7 As shown, the transmission mechanism 5 includes a turntable 54 coaxially fixed with the second sprocket 94. A strip frame 55 is provided on the front side of the turntable 54. A toggle shaft 56 is installed on the front side of the turntable 54. The toggle shaft 56 is located inside the strip frame 55. Right-angle rods 51 are installed at the upper and lower ends of the strip frame 55. Limiting sliders 52 are installed at the rear ends of the right-angle rods 51. A limiting groove 53 that cooperates with the limiting slider 52 is provided on the outer wall of the flocculation tank 1.

[0034] The rotation of the second sprocket 94 drives the turntable 54 and the actuating shaft 56 to rotate. When the actuating shaft 56 rotates, it pushes the strip frame 55 to move the limiting slider 52 along the limiting groove 53. The strip frame 55 moves back and forth left and right under the push of the actuating shaft 56.

[0035] Example 5: As shown in the attached document Figure 4 As shown, the limiting slider 52 is a T-shaped slider, and the limiting groove 53 has a T-shaped cross-section. The movement trajectory of the strip frame 55 is limited by setting the T-shaped slider and the T-shaped groove.

[0036] Example 6: As shown in the appendix Figure 5 , 6 As shown, the feeding mechanism 6 includes an installation plate 65 mounted on the outer wall of the flocculation tank 1. A dosing assembly 66 is installed at the upper end of the installation plate 65. The dosing assembly 66 includes a dosing tank 661, which is connected to the flocculation tank 1 by a Z-shaped pipe 61. A straight pipe 62 is connected to one side of the Z-shaped pipe 61. A piston 63 is slidably installed inside the straight pipe 62. A pull rod 64 connects the piston 63 to the strip frame 55. One-way valves are installed in the Z-shaped pipes 61 above and below the straight pipe 62. The one-way valves prevent backflow of the chemical solution and wastewater.

[0037] Example 7: As attached Figure 6 As shown, the dispensing assembly 66 also includes a rotating shaft 662 rotatably connected to the inside of the dispensing tank 661. Stirring rods 663 are evenly distributed on the outer wall of the rotating shaft 662. One end of the rotating shaft 662 extends outward from the outside of the dispensing tank 661 and is fixedly mounted with a winding roller 667. A pull rope 666 is wound around the winding roller 667, and the other end of the pull rope 666 is connected to the side wall of the strip frame 55. When the strip frame 55 moves, it pulls the pull rope 666, thereby driving the rotating shaft 662 and stirring rods 663 to rotate, agitating the liquid and preventing sedimentation.

[0038] Example 8: As attached Figure 6As shown, a coil spring 664 is installed on the rotating shaft 662 between the medicine dispensing box 661 and the take-up roller 667. A fixed cover 665 is rotatably mounted on the rotating shaft 662 on the outside of the coil spring 664. The two ends of the coil spring 664 are connected to the rotating shaft 662 and the fixed cover 665, respectively. The coil spring 664 automatically tightens the stretched pull rope 666.

[0039] Example 9: As attached Figure 1-7As shown, the method of use is as follows: First, a suitable concentration of chemical solution for wastewater treatment is pre-stored inside the dosing assembly. One end of the right-angle connector 8 is connected to the external wastewater discharge pipe, allowing oil drilling wastewater to be discharged into the flocculation tank 1 through the right-angle connector 8. The wastewater rushing out from the lower end of the right-angle connector 8 impacts the water wheel 41, causing the water wheel 41 to drive the first gear 42 to rotate. The first gear 42 then drives the second gear 43 to rotate. Second, during the rotation of the second gear 43, the second sprocket 94 rotates synchronously, and the chain 95 drives the two first sprockets 94. 3. The two first sprockets 93 drive the two stirring shafts 91 to rotate, and the stirring shafts 91 drive the stirring rods 92 to rotate, thus rotating and stirring the solution inside the flocculation tank 1. In the third step, during the rotation of the second sprocket 94, since the second sprocket 94 is coaxially fixed with the turntable 54, the rotation of the second sprocket 94 also drives the turntable 54 to rotate. The turntable 54 drives the actuating shaft 56 to revolve, and the actuating shaft 56 pushes the strip frame 55 left and right reciprocatingly, causing the strip frame 55 to drive the right-angle rod 51 to reciprocate, so that the limiting slider 52 slides inside the limiting groove 53, thus facilitating the reciprocating movement of the strip frame 55. Fourth, during the reciprocating movement of the strip frame 55, the piston 63 can be reciprocated inside the straight tube 62 via the pull rod 64. When the piston 63 moves closer to the turntable 54, the solution stored inside the dosing component 66 can be extracted through the Z-shaped tube 61. At this time, the one-way valve at the connection between the Z-shaped tube 61 and the dosing component 66 opens, and the other one-way valve closes, drawing the solution into the straight tube 62. When the piston 63 moves away from the turntable 54, the solution temporarily stored inside the straight tube 62 can be transported to the flocculation tank 1 through the Z-shaped tube 61, where it mixes with the wastewater entering the flocculation tank 1. Water enters the sedimentation tank 2 through the connecting channel 3 for sedimentation. During the reciprocating movement of the strip frame 55, the pull rope 666 is dragged. When the pull rope 666 is pulled, it is released from the take-up roller 667 and drives the take-up roller 667 to rotate. The take-up roller 667 drives the rotating shaft 662 to rotate, tightening the coil spring 664. This causes the rotating shaft 662 to drive the stirring rod 663 to stir the medicine liquid inside the medicine tank 661. When the pull on the pull rope 666 is removed, under the action of the coil spring 664, the rotating shaft 662 drives the take-up roller 667 and the stirring rod 663 to reverse, and the take-up roller 667 rewinds the pull rope 666.

[0040] The above technical features constitute various embodiments of the present invention, which have strong adaptability and implementation effect. Unnecessary technical features can be added or removed according to actual needs to meet the needs of different situations.

Claims

1. A continuous treatment device for oil drilling wastewater, characterized in that... It includes a flocculation tank, a sedimentation tank, a linkage mechanism, and a stirring mechanism. A flocculation tank is set on one side of the sedimentation tank, and the flocculation tank and the sedimentation tank are connected by a connecting channel. A fixed plate is installed on the top of the flocculation tank, and a right-angle pipe is installed on the fixed plate. A linkage mechanism is set on the inner side of the flocculation tank below the right-angle pipe. A stirring mechanism is set on the flocculation tank. The linkage mechanism can drive the stirring mechanism. A transmission mechanism is set in front of the stirring mechanism. A feeding mechanism is installed on the outer wall of the flocculation tank on both sides of the transmission mechanism. The stirring mechanism can drive the transmission mechanism to pull the feeding mechanism to automatically feed materials into the flocculation tank.

2. The continuous treatment device for oil drilling wastewater according to claim 1, characterized in that... The linkage mechanism includes a water wheel and a first gear. The water wheel and the first gear are connected by transmission and are coaxially rotated and installed inside the flocculation tank. A second gear meshes with the lower side of the first gear. The second gear is rotated and installed inside the flocculation tank. The lower port of the right-angle pipe is offset from the vertical centerline of the water wheel.

3. The continuous treatment device for oil drilling wastewater according to claim 2, characterized in that... The stirring mechanism includes two first sprockets that are rotatably mounted on the outer wall of the flocculation tank at left and right intervals. Both first sprockets are coaxially connected to a stirring shaft located inside the flocculation tank. Stirring rods are evenly distributed on the outer wall of the stirring shaft. A second sprocket is rotatably mounted on the outer wall of the flocculation tank between the two first sprockets. The second sprocket is coaxially connected to a second gear drive. The two first sprockets and the second sprocket are connected by a chain drive.

4. The continuous treatment device for oil drilling wastewater according to claim 3, characterized in that... The transmission mechanism includes a turntable fixed coaxially with the second sprocket. A strip frame is provided on the front side of the turntable, and an actuating shaft is installed on the front side of the turntable. The actuating shaft is located inside the strip frame. Right-angle rods are installed at the upper and lower ends of the strip frame. Limiting sliders are installed at the rear ends of the right-angle rods. The outer wall of the flocculation tank is provided with a limiting groove that cooperates with the limiting slider.

5. The continuous treatment device for oil drilling wastewater according to claim 4, characterized in that... The limiting slider is a T-shaped slider, and the cross-sectional shape of the limiting groove is T-shaped.

6. The continuous treatment device for oil drilling wastewater according to claim 4 or 5, characterized in that... The feeding mechanism includes an installation plate mounted on the outer wall of the flocculation tank. A dosing component is provided at the upper end of the installation plate. The dosing component includes a dosing tank. A Z-shaped pipe connects the dosing tank to the flocculation tank. A straight pipe is connected to one side of the Z-shaped pipe. A piston is slidably installed inside the straight pipe. A pull rod is connected between the piston and the strip frame. One-way valves are provided in the Z-shaped pipes at positions above and below the straight pipe.

7. The continuous treatment device for oil drilling wastewater according to claim 6, characterized in that... The dispensing assembly also includes a rotating shaft rotatably connected to the inside of the dispensing box. Stirring rods are evenly distributed on the outer wall of the rotating shaft. One end of the rotating shaft extends out of the outside of the dispensing box and is fixedly installed with a winding roller. A pull rope is wound on the winding roller, and the other end of the pull rope is connected to the side wall of the strip frame.

8. The continuous treatment device for oil drilling wastewater according to claim 7, characterized in that... A coil spring is installed on the shaft between the dispensing box and the take-up roller. A fixed cover is rotatably mounted on the shaft on the outside of the coil spring. The two ends of the coil spring are connected to the shaft and the fixed cover, respectively.

9. The method of using the continuous oil drilling wastewater treatment device according to claim 8, characterized in that... The process is as follows: First, a suitable concentration of wastewater treatment solution is pre-stored inside the dosing assembly. One end of the right-angle connector is connected to an external wastewater discharge pipe, allowing oil drilling wastewater to flow into the flocculation tank through the right-angle connector. The wastewater rushing out from the lower end of the right-angle connector impacts the water wheel, causing it to rotate the first gear, which in turn drives the second gear. Second, during the rotation of the second gear, the second sprocket rotates synchronously. The chain drives the two first sprockets, which in turn drive the two stirring shafts. The stirring shafts then drive the stirring rods, thus rotating and stirring the solution inside the flocculation tank. Third, during the rotation of the second sprocket, since it is coaxially fixed with the turntable, the rotation of the second sprocket also drives the turntable to rotate. The turntable drives the actuating shaft to revolve, which in turn pushes the strip frame left and right, causing the strip frame to move the right-angle rod back and forth, thus moving the limiting slider within the limiting groove. The sliding mechanism constrains and limits the reciprocating movement of the strip frame. In the fourth step, during the reciprocating movement of the strip frame, the piston can be moved back and forth inside the straight tube via a pull rod. When the piston moves closer to the turntable, the solution stored inside the dosing assembly can be extracted through the Z-shaped tube. At this time, the one-way valve at the connection between the Z-shaped tube and the dosing assembly opens, and the other one-way valve closes, drawing the solution into the straight tube. When the piston moves away from the turntable, the solution temporarily stored inside the straight tube can be transported through the Z-shaped tube to the flocculation tank, where it enters... The wastewater inside the flocculation tank is mixed, and the completely mixed wastewater enters the sedimentation tank through the connecting channel for sedimentation. During the reciprocating movement of the bar frame, the pull rope can be dragged. When the pull rope is pulled, the pull rope is released from the take-up roller and drives the take-up roller to rotate. The take-up roller drives the rotating shaft to rotate, tightening the coil spring. This causes the rotating shaft to drive the stirring rod to stir the medicine solution inside the dosing tank. When the pull rope is removed, under the action of the coil spring, the rotating shaft drives the take-up roller and the stirring rod to reverse, and the take-up roller rewinds the pull rope.

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