Wastewater treatment device for oilfield drilling diluent production
By adopting the separation design of the liquid collection chamber and the waste silo in the waste silo treatment device for drilling diluent production in the oil field, combined with the linkage of scraping, slitting and mixing components, the problem of scum adhering to the inner wall of the waste silo is solved, achieving efficient solid-liquid separation and reducing maintenance costs.
Patent Information
- Application Number
- CN202510672294.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2025-07-01
AI Technical Summary
When cleaning the slag, the existing wastewater treatment device for drilling diluent production in oilfields, the slag is prone to adhere to the inner wall of the waste silo, resulting in low slag discharge efficiency and increasing work costs.
The separation design of the liquid collection chamber and the waste silo is adopted, combined with the linkage of the scraping mechanism, the transfer mechanism and the stirring assembly, the scum is scraped to the waste silo through the scraping mechanism, and the transfer mechanism pushes the scum to the outlet. The stirring assembly accelerates the mixing of the agent and the wastewater, promotes the floating scum to the rise of impurities, and realizes solid-liquid separation.
It improves solid-liquid separation efficiency, reduces the accumulation of scum in the waste silo, reduces maintenance costs, and ensures the efficiency and stability of the processing process.
Smart Images
Figure CN120229787A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of wastewater cleaning, and specifically discloses a wastewater treatment device for the production of oilfield drilling diluents. Background Art
[0002] In oilfield drilling operations, the use of diluents depends on specific working conditions and the requirements of the drilling fluid system, and is usually used to adjust the rheological properties of the drilling fluid or solve specific problems. Lignosulfonate is a diluent for oilfield drilling. Lignosulfonate has good dispersion performance and salt resistance, can effectively reduce the viscosity and shear force of the drilling fluid, prevent the formation of thick mud cakes on the well wall, improve the fluidity and stability of the drilling fluid, and thus is conducive to the smooth progress of drilling operations. During the processing of lignosulfonate, the wastewater usually contains unreacted lignin, sulfonation by-products, organic impurities, and possible microbial contaminants. To control microbial growth and prevent system contamination, bactericides are usually added for treatment. After sterilization, some impurities will float on the water surface due to changes in physical and chemical properties, forming a scum layer.
[0003] In the existing wastewater treatment device for the production of oilfield drilling diluents, when cleaning the scum on the wastewater surface, the viscosity of the scum will cause it to stay on the inner wall of the waste bin, resulting in low slag discharge efficiency, frequent dredging, and increased working costs. Summary of the Invention
[0004] In view of this, the purpose of the present invention is to provide a wastewater treatment device for the production of oilfield drilling diluents to solve the problem that in the prior art, when cleaning the scum on the wastewater surface, the viscosity of the scum will cause it to stay on the inner wall of the waste bin, resulting in low slag discharge efficiency, frequent dredging, and increased working costs.
[0005] To achieve the above object, the present invention provides a wastewater treatment device for the production of oilfield drilling diluents, including a wastewater tank. The interior of the wastewater tank includes a liquid collection bin and a waste bin. The top of the liquid collection bin and the top of the waste bin cooperate to form a circle. The lower part of the wastewater tank is connected to a base through support columns. The waste bin extends to the upper surface of the base. A central column is provided in the middle of the wastewater tank. A pushing mechanism is provided between the wastewater tank and the base. A stirring component is provided inside the liquid collection bin and opposite to the waste bin. The pushing mechanism cooperates with the stirring component. The pushing mechanism can drive the stirring component to rotate. The pushing mechanism is used to push the scum inside the waste bin. The pushing mechanism includes a pushing plate. Two ends of the bottom of the pushing plate are fixedly installed with limit blocks. A chute is opened on the upper surface of the base and on the side of the waste bin. The limit blocks are slidably installed in the chute. The pushing plate is movably located between the wastewater tank and the base. A smooth rod is installed on the surface of the pushing plate. The surface of the smooth rod movably penetrates through the bottom of the waste bin. A scraping plate is movably installed inside the waste bin. The end of the smooth rod is fixedly connected to the scraping plate.
[0006] In the above technical solution, preferably, a first sealing plate and a second sealing plate are provided on both sides of the waste bin. The first sealing plate and the second sealing plate can separate the liquid collection bin and the waste bin.
[0007] In the above technical solution, preferably, a first inclined surface is provided on the top of the first sealing plate. The horizontal height of the first inclined surface at the end close to the waste bin is higher than the horizontal height at the end close to the liquid collection bin, and the surface of the first inclined surface is set as a smooth surface. A second arc edge is provided on the top of the second sealing plate. The second arc edge is close to the waste bin.
[0008] In the above technical solution, preferably, a support frame is fixedly installed on the top of the wastewater tank. A scraping mechanism is provided above the central column. The scraping mechanism is used to scrape the scum on the upper surface of the liquid collection bin into the waste bin. The scraping mechanism includes a stepping motor. The stepping motor is installed in the middle of the top of the support frame. The output end of the stepping motor is connected to a guiding rod. The guiding rod movably penetrates through the central column. A sleeve is fixedly sleeved on the surface of the guiding rod and between the central column and the support frame. An extension block is provided on the surface of the sleeve. A first rectangular plate is provided at the end of the extension block. A cross plate is provided above the wastewater tank. The length of the cross plate is the same as the straight-line distance from the central column to the inner wall of the liquid collection bin. A second rectangular plate is provided at the end of the cross plate close to the central column. The first rectangular plate and the second rectangular plate are connected by bolts. An elastic plate is installed below the cross plate by bolts.
[0009] In the above technical solution, preferably, a first gear is rotatably installed at the bottom of the guide rod, a second gear is rotatably installed on one side of the first gear close to the waste bin, the second gear meshes with the first gear, a first toothed synchronous pulley is fixedly installed at the bottom of the second gear, and a second toothed synchronous pulley is rotatably installed at one end of the bottom of the waste water tank away from the waste bin. A chain is cooperatively installed between the first toothed synchronous pulley and the second toothed synchronous pulley. The first toothed synchronous pulley, the second toothed synchronous pulley and the chain are arranged between the first gear and the pushing plate. A connecting block is fixedly installed on the surface of the chain, a protruding column is fixedly arranged at the end of the connecting block, a movable groove is formed on the surface of the pushing plate, and the surface of the protruding column is movably installed in the movable groove.
[0010] In the above technical solution, preferably, a storage groove is arranged on the surface of the central column inside the waste bin, a slope plate is arranged above the storage groove, and the scraping plate can be stored in the storage groove.
[0011] In the above technical solution, preferably, the stirring assembly includes a rotating rod, stirring blades are installed on the surface of the rotating rod, the bottom of the rotating rod penetrates through the waste water tank, and the bottom end of the rotating rod is fixedly connected to the second toothed synchronous pulley.
[0012] Compared with the prior art, the present invention has the following beneficial effects: The liquid collection bin and the waste bin are separated into independent spaces by the first sealing plate and the second sealing plate, preventing untreated floating slag from mixing into the waste bin, ensuring a pure separation process, improving the subsequent treatment efficiency, preventing secondary solid-liquid mixing, reducing impurity interference, and significantly improving the separation efficiency compared with the traditional open structure; The stepping motor synchronously drives the scraping mechanism, the pushing mechanism and the stirring assembly through the guide rod, without an additional power source, with a compact mechanical structure, simplified control logic and low maintenance cost; By setting the scraping mechanism, the stepping motor drives the guide rod to rotate, driving the cross plate to move in a circular motion around the central column. The elastic plate below the cross plate contacts the liquid surface, and the floating slag on the liquid surface of the liquid collection bin is centrally pushed towards the waste bin direction through the radial scraping force, realizing the preliminary solid-liquid separation; The pushing plate forms a stable linear reciprocating motion trajectory through the cooperation of the bottom limiting block and the base chute. When the pushing plate moves, the smooth rod drives the scraping plate in the waste bin to slide synchronously. The scraping plate clings to the inner wall of the waste bin, and can forcibly push the floating slag adhering to the bin wall towards the outlet direction, avoiding the accumulation and retention of floating slag, and realizing the efficient centralized collection of floating slag in the waste bin; The first gear at the bottom of the guide rod meshes with the second gear. Through the toothed synchronous pulley and chain drive, the rotational motion of the scraping mechanism is converted into the linear reciprocating motion of the pushing mechanism. When the scraping mechanism rotates to scrape the slag, the pushing mechanism synchronously drives the scraping plate to push the floating slag in the waste bin, realizing the linkage of scraping and pushing the slag, ensuring that the floating slag is removed in time and avoiding accumulation in the waste bin; The transmission chain of the pushing mechanism simultaneously drives the stirring assembly to stir the wastewater in the liquid collection bin, accelerating the mixing reaction of the medicament and the wastewater, promoting the floating of impurities to form floating slag, improving the solid-liquid separation efficiency from the source, and forming a complete closed-loop treatment process with the scraping mechanism and the pushing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic structural diagram of the wastewater tank of the present invention; Figure 2 It is a schematic structural diagram of the wastewater tank from another perspective of the present invention; Figure 3 For the present invention Figure 2 An enlarged view of part A in Figure 4 It is a schematic internal structural diagram of the wastewater tank of the present invention; Figure 5 It is a schematic internal structural diagram of the wastewater tank from another perspective of the present invention; Figure 6 For the present invention Figure 4 An enlarged view of part B in Figure 7 For the present invention Figure 5 An enlarged view of part C in
[0014] In the figure: 1. Wastewater tank; 2. Base; 3. Central column; 4. Liquid collection bin; 5. Waste bin; 6. Scraping mechanism; 7. Pushing mechanism; 8. Support frame; 9. Stepper motor; 10. Sleeve; 11. Horizontal plate; 12. Elastic plate; 13. Chute; 14. Pushing plate; 15. Limiting block; 16. Movable groove; 17. First toothed synchronous pulley; 18. Chain; 19. Second toothed synchronous pulley; 20. Connecting block; 21. Protruding column; 22. Smooth rod; 23. Second gear; 24. First gear; 25. Stirring assembly; 26. First sealing plate; 27. Second sealing plate; 28. First inclined surface; 29. Second arc edge; 30. First rectangular plate; 31. Second rectangular plate; 32. Slope plate; 33. Scraping plate. DETAILED DESCRIPTION OF THE INVENTION
[0015] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.
[0016] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the limitations of the specific embodiments disclosed below.
[0017] As Figures 1-7 shown, a wastewater treatment device for the production of oilfield drilling diluents includes a wastewater tank 1. The interior of the wastewater tank 1 includes a liquid collection bin 4 and a waste bin 5. The top of the liquid collection bin 4 and the top of the waste bin 5 cooperate to form a circle. The lower part of the wastewater tank 1 is connected to a base 2 through support columns. The waste bin 5 extends to the upper surface of the base 2. A central column 3 is provided in the middle of the wastewater tank 1. A scraping mechanism 6 is provided above the central column 3. A pushing mechanism 7 is provided between the wastewater tank 1 and the base 2. The scraping mechanism 6 is used to scrape the scum on the upper surface of the liquid collection bin 4 into the waste bin 5. The pushing mechanism 7 is used to push the scum inside the waste bin 5. A stirring assembly 25 is provided inside the liquid collection bin 4 and opposite to the waste bin 5. The pushing mechanism 7 cooperates with the stirring assembly 25, and the pushing mechanism 7 can drive the stirring assembly 25 to rotate. Through the linkage cooperation of the scraping mechanism 6, the pushing mechanism 7 and the stirring assembly 25, the mechanism realizes the linkage operation of promoting impurities to float to form scum, scraping the scum and pushing the scum, ensuring that the scum is removed in time and avoiding accumulation in the waste bin 5.
[0018] First sealing plates 26 and second sealing plates 27 are provided on both sides of the waste bin 5. The first sealing plates 26 and the second sealing plates 27 can separate the liquid collection bin 4 and the waste bin 5, and the liquid collection bin 4 and the waste bin 5 form independent spaces. The scum inside the liquid collection bin 4 floats above the liquid surface. Under the action of the scraping mechanism 6, the scum in the liquid collection bin 4 can be pushed into the waste bin 5.
[0019] A first inclined surface 28 is provided at the top of the first sealing plate 26. The horizontal height of the first inclined surface 28 at the end close to the waste bin 5 is higher than the horizontal height at the end close to the liquid collection bin 4, and the surface of the first inclined surface 28 is set as a smooth surface. A second arc edge 29 is provided at the top of the second sealing plate 27. The second arc edge 29 is close to the waste bin 5. When the scraping mechanism 6 scrapes the scum on the liquid surface of the liquid collection bin 4 towards the waste bin 5, the scum first contacts the first inclined surface 28. Since the height of the first inclined surface 28 at the end close to the waste bin 5 is higher, the scum moves along the inclined surface under the scraping force and is guided above the entrance of the waste bin 5. The smooth surface of the first inclined surface 28 reduces the frictional resistance between the scum and the inclined surface, making it easier for the scum to be pushed into the waste bin 5. The second arc edge 29 at the top of the second sealing plate 27 forms a smooth transition surface. When the scraping mechanism 6 continues to rotate, the second arc edge 29 can remove the scum adhered to the surface of the scraping mechanism 6, preventing the scum adhered to the surface of the scraping mechanism 6 from being brought back into the liquid collection bin 4 again, and at the same time reducing the impact between the scraping mechanism 6 and the liquid surface.
[0020] A support frame 8 is fixedly installed on the top of the wastewater tank 1. The scraping mechanism 6 includes a stepping motor 9. The stepping motor 9 is installed in the middle of the top of the support frame 8. The output end of the stepping motor 9 is connected with a guide rod. The guide rod movably penetrates through the central column 3. A sleeve 10 is fixedly sleeved on the surface of the guide rod and between the central column 3 and the support frame 8. An extension block is arranged on the surface of the sleeve 10. A first rectangular plate 30 is arranged at the end of the extension block. A cross plate 11 is arranged above the wastewater tank 1. The length of the cross plate 11 is the same as the straight-line distance from the central column 3 to the inner wall of the liquid collection bin 4. A second rectangular plate 31 is arranged at one end of the cross plate 11 close to the central column 3. The first rectangular plate 30 and the second rectangular plate 31 are connected by bolts. An elastic plate 12 is installed below the cross plate 11 by bolts. The stepping motor 9 drives the guide rod to rotate. The sleeve 10 rotates with the guide rod. The cross plate 11 is driven by the extension block and the rectangular plate to make a circular motion around the central column 3. The elastic plate 12 below the cross plate 11 contacts the liquid surface of the liquid collection bin 4. When rotating, the floating slag is scraped towards the waste bin 5. The elastic plate 12 can adapt to the fluctuations of the first inclined surface 28 and the second arc edge 29 to ensure stable scraping effect.
[0021] The pushing mechanism 7 includes a pushing plate 14. Two ends of the bottom of the pushing plate 14 are fixedly installed with limit blocks 15. A chute 13 is opened on the upper surface of the base 2 and on the side of the waste bin 5. The limit blocks 15 are slidably installed in the chute 13. The pushing plate 14 is restricted to move in a straight reciprocating motion through the cooperation of the limit blocks 15 at the bottom and the chute 13 on the base 2. The pushing plate 14 is movably located between the wastewater tank 1 and the base 2. A smooth rod 22 is installed on the surface of the pushing plate 14. The surface of the smooth rod 22 movably penetrates through the bottom of the waste bin 5. A scraping panel 33 is movably installed inside the waste bin 5. The end of the smooth rod 22 is fixedly connected to the scraping panel 33. When the pushing plate 14 makes a straight reciprocating motion between the wastewater tank 1 and the base 2, the smooth rod 22 moves synchronously with the pushing plate 14. At the same time, the smooth rod 22 also drives the scraping panel 33 in the waste bin 5 to slide along the bottom of the waste bin 5. The scraping panel 33 is closely attached to the inner wall of the waste bin 5, and can push the floating slag adhering to the inner wall of the waste bin 5 towards the outlet of the waste bin 5 to realize the centralized collection of the floating slag.
[0022] A first gear 24 is rotatably installed at the bottom of the guide rod. A second gear 23 is rotatably installed on one side of the first gear 24 close to the waste bin 5. The second gear 23 meshes with the first gear 24. A first toothed synchronous pulley 17 is fixedly installed at the bottom of the second gear 23. A second toothed synchronous pulley 19 is rotatably installed at one end of the bottom of the wastewater tank 1 away from the waste bin 5. A chain 18 is cooperatively installed between the first toothed synchronous pulley 17 and the second toothed synchronous pulley 19. The first toothed synchronous pulley 17, the second toothed synchronous pulley 19 and the chain 18 are arranged between the first gear 24 and the push plate 14. A connecting block 20 is fixedly installed on the surface of the chain 18. A protruding column 21 is fixedly arranged at the end of the connecting block 20. An activity groove 16 is formed on the surface of the push plate 14. The surface of the protruding column 21 is movably installed in the activity groove 16. The stepping motor 9 drives the guide rod to rotate, and the first gear 24 at the bottom of the guide rod rotates synchronously. When the first gear 24 rotates, the second gear 23 also rotates. The second gear 23 drives the coaxial first toothed synchronous pulley 17 to rotate, drives the second toothed synchronous pulley 19 through the chain 18. The connecting block 20 on the chain 18 moves along with the chain 18, and the protruding column 21 at its end slides in the activity groove 16 of the push plate 14, converting the circular motion of the chain 18 into the linear reciprocating motion of the push plate 14. When the slag scraping mechanism 6 rotates to scrape the slag, the guide rod synchronously drives the pushing mechanism 7 to realize the linkage work. This mechanism can make the slag scraping and slag pushing actions proceed synchronously, ensuring that the floating slag is timely scraped and pushed to the outlet to prevent accumulation in the waste bin 5.
[0023] A storage groove is arranged on the surface of the central column 3 inside the waste bin 5. A slope plate 32 is arranged above the storage groove. The slope plate 32 can facilitate the diversion of the floating slag. The scraping panel 33 can be stored in the storage groove. When the pushing mechanism 7 drives the scraping panel 33 to move through the optical rod 22, the scraping panel 33 is pushed out of the storage groove and moves towards the outlet of the waste bin 5 to push the floating slag forward.
[0024] The stirring assembly 25 includes a rotating rod. Stirring blades are installed on the surface of the rotating rod. The bottom of the rotating rod penetrates through the wastewater tank 1. The bottom end of the rotating rod is fixedly connected to the second toothed synchronous pulley 19. The second toothed synchronous pulley 19 rotates along with the chain 18, thereby driving the rotating rod and the stirring blades to rotate to stir the wastewater in the liquid collection chamber 4. The stirring effect can accelerate the mixing of the medicament.
[0025] Working principle: First, the liquid collecting bin 4 and the waste bin 5 are separated into independent spaces by the first sealing plate 26 and the second sealing plate 27 to prevent the scum from mixing into the waste bin 5 before being scraped off, thereby ensuring the effectiveness of solid-liquid separation. Next, the stepper motor 9 is started, and its output end drives the guide rod to rotate. The sleeve 10 rotates synchronously with the guide rod, and the horizontal plate 11 is driven to make a circular motion around the central column 3 through the extension block and the first rectangular plate 30 and the second rectangular plate 31. The elastic plate 12 under the horizontal plate 11 contacts the liquid collecting bin 4. The liquid level is adjusted, and radial scraping force is generated during rotation to push the scum toward the waste bin 5. When the scum is pushed to the first sealing plate 26, due to the inclined design of the first inclined surface 28, the scum slides upward along the smooth inclined surface under the action of the scraping force, and falls into the waste bin 5 after crossing over the top of the sealing plate. The second arc edge 29 at the top of the second sealing plate 27 scrapes and cleans the scum adhered to the scraping mechanism 6 to prevent the scum from being brought back to the liquid collecting bin 4. Subsequently, the first gear 24 at the bottom of the guide rod rotates with the guide rod to mesh with the first gear 24 at the bottom of the guide rod. The second gear 23 makes it rotate, driving the coaxial first toothed synchronous wheel 17 to rotate, the first toothed synchronous wheel 17 drives the second toothed synchronous wheel 19 through the chain 18, the connecting block 20 on the chain 18 moves with the chain 18, and the protruding column 21 at the end thereof slides in the movable groove 16 of the push plate 14, converting the circular motion of the chain 18 into a linear reciprocating motion of the push plate 14, and the push plate 14 drives the scraper panel 33 in the waste bin 5 to move synchronously through the polished rod 22, and the scraper panel 33 is tightly moved. The scraper mechanism 6 is attached to the inner wall of the waste bin 5 to push the scum toward the outlet. The second toothed synchronous wheel 19 obtains power through the chain 18 to drive the rotating rod and the stirring blade of the stirring assembly 25 to rotate. The stirring blade stirs the waste water in the liquid collecting bin 4 to accelerate the mixing of the reagent and the waste water and promote the floating of impurities. According to the number of teeth of the first gear 24 and the second gear 23, when the horizontal plate 11 inside the scraping mechanism 6 moves to the top of the waste bin 5, the scraping panel 33 will be recovered into the storage tank at this time.
[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.
Claims
1. A wastewater treatment device for the production of oilfield drilling diluents, comprising a wastewater tank (1), characterized in that, The interior of the wastewater tank (1) includes a liquid collection bin (4) and a waste bin (5). The top of the liquid collection bin (4) and the top of the waste bin (5) cooperate to form a circle. The bottom of the wastewater tank (1) is connected to a base (2) through support columns. The waste bin (5) extends to the upper surface of the base (2). A central column (3) is provided in the middle of the wastewater tank (1). A pushing mechanism (7) is provided between the wastewater tank (1) and the base (2). Inside the liquid collection bin (4) and opposite to the waste bin (5), there is a stirring assembly (25). The pushing mechanism (7) cooperates with the stirring assembly (25). The pushing mechanism (7) can drive the stirring assembly (25) to rotate. The pushing mechanism (7) is used to push the scum inside the waste bin (5). The pushing mechanism (7) includes a pushing plate (14). At both ends of the bottom of the pushing plate (14), limit blocks (15) are fixedly installed. On the upper surface of the base (2) and on the side of the waste bin (5), a chute (13) is opened. The limit blocks (15) are slidably installed in the chute (13). The pushing plate (14) is movably located between the wastewater tank (1) and the base (2). A smooth rod (22) is installed on the surface of the pushing plate (14). The surface of the smooth rod (22) movably penetrates the bottom of the waste bin (5). Inside the waste bin (5), a scraping plate (33) is movably installed. The end of the smooth rod (22) is fixedly connected to the scraping plate (33).
2. The wastewater treatment device for the production of oilfield drilling diluents according to claim 1, characterized in that, On both sides of the waste bin (5), there are a first sealing plate (26) and a second sealing plate (27). The first sealing plate (26) and the second sealing plate (27) can separate the liquid collection bin (4) from the waste bin (5).
3. The wastewater treatment device for the production of oilfield drilling diluents according to claim 2, wherein, At the top of the first sealing plate (26), there is a first inclined surface (28). The horizontal height of the end of the first inclined surface (28) close to the waste bin (5) is higher than the horizontal height of the end close to the liquid collection bin (4). And the surface of the first inclined surface (28) is set as a smooth surface. At the top of the second sealing plate (27), there is a second arc edge (29). The second arc edge (29) is close to the waste bin (5).
4. The wastewater treatment device for the production of oilfield drilling diluents according to claim 2, characterized in that, A support frame (8) is fixedly installed at the top of the wastewater tank (1). A scraping mechanism (6) is arranged above the central column (3). The scraping mechanism (6) is used to scrape the scum on the upper surface of the liquid collection bin (4) into the waste bin (5). The scraping mechanism (6) includes a stepping motor (9). The stepping motor (9) is installed at the middle end of the top of the support frame (8). The output end of the stepping motor (9) is connected with a guide rod. The guide rod movably penetrates through the central column (3). A sleeve (10) is fixedly sleeved on the surface of the guide rod between the central column (3) and the support frame (8). An extension block is arranged on the surface of the sleeve (10). A first rectangular plate (30) is arranged at the end of the extension block. A cross plate (11) is arranged above the wastewater tank (1). The length of the cross plate (11) is the same as the linear distance from the central column (3) to the inner wall of the liquid collection bin (4). A second rectangular plate (31) is arranged at one end of the cross plate (11) close to the central column (3). The first rectangular plate (30) and the second rectangular plate (31) are connected by bolts. An elastic plate (12) is installed below the cross plate (11) by bolts.
5. The wastewater treatment device for producing an oilfield drilling diluent according to claim 4, characterized in that, A first gear (24) is rotatably installed at the bottom of the guide rod. A second gear (23) is rotatably installed on one side of the first gear (24) close to the waste bin (5). The second gear (23) meshes with the first gear (24). A first toothed synchronous pulley (17) is fixedly installed at the bottom of the second gear (23). A second toothed synchronous pulley (19) is rotatably installed at one end of the bottom of the wastewater tank (1) far from the waste bin (5). A chain (18) is cooperatively installed between the first toothed synchronous pulley (17) and the second toothed synchronous pulley (19). The first toothed synchronous pulley (17), the second toothed synchronous pulley (19) and the chain (18) are arranged between the first gear (24) and the pushing plate (14). A connecting block (20) is fixedly installed on the surface of the chain (18). A protruding column (21) is fixedly arranged at the end of the connecting block (20). An activity groove (16) is formed on the surface of the pushing plate (14). The surface of the protruding column (21) is movably installed in the activity groove (16).
6. The wastewater treatment device for the production of oilfield drilling diluent according to claim 1, characterized in that, A storage groove is arranged on the surface of the central column (3) inside the waste bin (5). A slope plate (32) is arranged above the storage groove. The scraping panel (33) can be stored in the storage groove.
7. The wastewater treatment device for the production of oilfield drilling diluents according to claim 5, characterized in that, The stirring assembly (25) includes a rotating rod. Stirring blades are installed on the surface of the rotating rod. The bottom of the rotating rod penetrates through the wastewater tank (1). The bottom end of the rotating rod is fixedly connected to the second toothed synchronous pulley (19).