An oilfield sewage treatment filtering and separating device

Abstract

The utility model discloses an oilfield sewage treatment filtration separation device relates to sewage treatment technical field, including box, the inner wall fixed mounting of coarse filter chamber has filter and remove impurity subassembly, the inner wall fixed mounting of oil removal chamber has oil removal backflush subassembly. The utility model discloses an oilfield sewage treatment filtration separation device, its through filter and remove impurity subassembly can realize the function of intercepting suspended solids and automatic deslagging. Servo motor drive reel take up waterproof rope, drive the slide of the scraper along the fixed strip, and the impurities of intercepting are scraped to the conical bottom, and are discharged through the discharge pipe. Without manual intervention, the convenience is strong. Through oil removal backflush subassembly can realize the function of multistage oil removal filtration and dynamic backwashing. Motor drive conical gear pair drives the rotation of carousel, and the spray pipe is pulled along the slide rail up and down through the pull rod, and the high pressure spray head is inclined to the filter layer and washes, and the oil dirt of adsorption is stripped. Make two filter layers and can be used continuously.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a filtration and separation device for oilfield wastewater treatment. Background Technology

[0002] Oilfield wastewater refers to oily wastewater generated during oil extraction, gathering, transportation, and treatment. It typically contains pollutants such as crude oil, suspended solids, minerals, microorganisms, and chemical additives. If not properly treated, it can impact the environment and production.

[0003] Chinese patent document CN220351847U discloses a high-efficiency sedimentation mechanism for wastewater treatment. It features a flow guide seat fixedly installed inside a filter box, a filter plate fixedly installed between the inner top and bottom walls of the filter box, a sealing partition fixedly installed between the inner top and bottom walls of the filter box, and a water pump fixedly installed inside the filter box. This high-efficiency sedimentation mechanism for wastewater treatment, through its filtration and separation structure, performs preliminary filtration of raw wastewater under the action of the flow guide seat and filter plate. The wastewater is then pumped into the left side of the sealing partition using a water pump and flow pipe. A motor drives a rotating rod and a stirring paddle to mix the wastewater and coagulant, which then react before being discharged for natural sedimentation. This significantly improves the sedimentation effect and enhances the practicality of the device.

[0004] The existing technology has the following problems:

[0005] I. Although existing technologies use filter plates for coarse filtration of sewage, large suspended solids in the sewage will remain on the filter plates, requiring manual cleaning through the feed pipe, which is not convenient.

[0006] Second, existing technologies are not very effective at treating oily wastewater and have limited applicability. Utility Model Content

[0007] This invention provides an oilfield wastewater treatment filtration and separation device to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0009] An oilfield wastewater treatment filtration and separation device includes a housing. A grid is fixedly installed on the left side of the inner wall of the housing, dividing the housing into a coarse filtration chamber and an oil removal chamber. A filtration and impurity removal component is fixedly installed on the inner wall of the coarse filtration chamber, and an oil removal backflushing component is fixedly installed on the inner wall of the oil removal chamber.

[0010] The filtration and impurity removal assembly includes two fixing bars. The two fixing bars are fixedly installed on the front and rear sides of the inner wall of the coarse filtration chamber with their sides away from each other. Scrapers are slidably connected to the outer sides of the two fixing bars. The bottom of the scrapers is an inclined surface and fits against the left side of the fence. The bottom of the coarse filtration chamber is a conical structure. A discharge pipe with a manual valve is fixedly installed at the bottom of the coarse filtration chamber.

[0011] The oil removal backflushing assembly includes a walnut shell filter layer and a fiber ball filter layer. The front and rear parts of the walnut shell filter layer are fixedly installed on the right side of the inner wall of the housing. The front and rear parts of the fiber ball filter layer are fixedly installed on the right side of the inner wall of the housing, located to the right of the walnut shell filter layer. Slide rails are fixedly installed on the front and rear parts of the right side of the inner wall of the housing, located to the right of the walnut shell filter layer and the fiber ball filter layer. Sliding blocks are slidably connected to the inner walls of the four slide rails. Spray pipes are fixedly installed on the opposite sides of the four adjacent sliding blocks. Several high-pressure nozzles arranged linearly are fixedly installed on the outer walls of the two spray pipes near the walnut shell filter layer and the fiber ball filter layer. Protective covers surrounding the two spray pipes are fixedly installed at the edges of the opposite sides of the four adjacent sliding blocks.

[0012] Preferably, a mounting bracket is fixedly installed on the left side of the front and rear sides of the box, directly above the scraper. A rope reel is rotatably connected to the upper middle part of the mounting bracket. A servo motor is fixedly installed on the upper front part of the mounting bracket. The output end of the servo motor is fixedly connected to the front end of the rope reel. A waterproof rope is wound around the middle of the outer wall of the rope reel. The bottom of the waterproof rope passes through the top of the mounting bracket and is fixedly connected to the upper middle part of the scraper.

[0013] Preferably, a flexible hose is fixedly installed on the rear part of the outer wall of each of the two spray pipes, penetrating the right side of the two protective covers, and a water supply pipe is fixedly connected to the front part of the two flexible hoses. A connector is fixedly connected to the bottom of the outer wall of the water supply pipe.

[0014] Preferably, two support frames are fixedly installed on the right side of the front and rear sides of the box body. The two support frames are located to the right of the walnut shell filter layer and the fiber ball filter layer, respectively. A connecting frame is located close to each other at the upper end of the two support frames. A fixed frame is fixedly installed at the middle of the upper end of the connecting frame. A motor is fixedly connected to the bottom of the inner wall of the fixed frame. A bevel gear one is fixedly sleeved at the output end of the motor. A rotating shaft passing through the left and right parts of the fixed frame is rotatably connected to the top of the inner wall of the connecting frame. A bevel gear two is fixedly sleeved on the left side of the outer wall of the rotating shaft. The outer surface of the bevel gear one meshes with the outer surface of the bevel gear two.

[0015] Preferably, turntables are fixedly installed at both the left and right ends of the rotating shaft, and pull rods are rotatably connected at the edges of the two turntables on opposite sides. Slide rods penetrating the two support frames are fixedly installed at the front and rear of the upper ends of the two protective covers. Top plates are fixedly installed at the upper ends of the four adjacent slide rods, and the bottoms of the two pull rods are rotatably connected to the middle of the upper ends of the two top plates.

[0016] Preferably, two slag discharge pipes are fixedly installed through the lower right side of the box body, located to the left of the walnut shell filter layer and the fiber ball filter layer respectively, and a valve is fixedly connected to the bottom of the inner cavity of each of the two slag discharge pipes.

[0017] Preferably, a discharge pipe is fixedly installed at the lower right end of the box body, located to the right of the fiber ball filter layer. A sedimentation tank is fixedly connected to the right side of the discharge pipe. A clarification tank is fixedly connected to the right side of the sedimentation tank. A disinfection tank is fixedly connected to the right side of the clarification tank.

[0018] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0019] 1. This utility model provides a filtration and separation device for oilfield wastewater treatment. Through the cooperation of a fixed bar, scraper, discharge pipe, mounting frame, rope reel, servo motor, and waterproof rope, it achieves the functions of intercepting suspended solids and automatically discharging slag. The servo motor drives the rope reel to wind and unwind the waterproof rope, causing the scraper to slide along the fixed bar, scraping the intercepted impurities to the bottom of the cone shape and discharging them through the discharge pipe. No manual intervention is required, making it highly convenient.

[0020] 2. This utility model provides an oilfield wastewater treatment filtration and separation device. Through the cooperation of a walnut shell filter layer, a fiber ball filter layer, a slide rail, a slider, a spray pipe, a high-pressure nozzle, a hose, a water supply pipe, a support frame, a connecting frame, a fixed frame, a motor, a first bevel gear, a rotating shaft, a second bevel gear, a turntable, a pull rod, a slide rod, and a slag discharge pipe, it can achieve multi-stage oil removal filtration and dynamic backwashing functions. The motor drives the bevel gear pair to rotate the turntable, and the pull rod pulls the spray pipe up and down along the slide rail. The high-pressure nozzle washes the filter layer at an inclined angle, stripping away the adsorbed oil. This ensures the continuous usability of both filter layers. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall front structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall bottom view of the present invention;

[0023] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model;

[0024] Figure 4This is a schematic diagram of the impurity removal component of this utility model;

[0025] Figure 5 This is a schematic diagram of the oil removal backflushing component of this utility model.

[0026] In the diagram: 1. Housing; 2. Filtration and impurity removal assembly; 3. Oil removal and backflushing assembly; 4. Fence; 5. Coarse filtration chamber; 6. Oil removal chamber; 7. Discharge pipe; 8. Sedimentation tank; 9. Clarification tank; 10. Disinfection tank; 21. Fixing strip; 22. Scraper; 23. Discharge pipe; 24. Mounting frame; 25. Rope reel; 26. Servo motor; 27. Waterproof rope; 31. Walnut shell filter layer; 32. Fiber ball filter layer; 33. Slide rail; 34. Slider; 35. Spray pipe; 36. High-pressure nozzle; 37. Hose; 38. Water supply pipe; 39. Support frame; 310. Connecting frame; 311. Fixing frame; 312. Motor; 313. Bevel gear one; 314. Rotating shaft; 315. Bevel gear two; 316. Turntable; 317. Tie rod; 318. Slide rod; 319. Slag discharge pipe. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] like Figures 1-5 As shown, an oilfield wastewater treatment filtration and separation device includes a housing 1. A grid 4 is fixedly installed on the left side of the inner wall of the housing 1. The grid 4 divides the housing 1 into a coarse filtration chamber 5 and an oil removal chamber 6. A filtration and impurity removal component 2 is fixedly installed on the inner wall of the coarse filtration chamber 5, and an oil removal backflushing component 3 is fixedly installed on the inner wall of the oil removal chamber 6.

[0029] The filter and impurity removal assembly 2 includes two fixing bars 21. The two fixing bars 21 are fixedly installed on the front and rear sides of the inner wall of the coarse filter chamber 5 with their sides away from each other. The outer sides of the two fixing bars 21 are slidably connected to scrapers 22. The bottom of the scrapers 22 is an inclined surface and fits against the left side of the fence 4. The bottom of the coarse filter chamber 5 is a conical structure. The bottom of the coarse filter chamber 5 is fixedly installed with a discharge pipe 23 with a manual valve.

[0030] The oil removal backflushing assembly 3 includes a walnut shell filter layer 31 and a fiber ball filter layer 32. The front and rear parts of the walnut shell filter layer 31 are fixedly installed on the right side of the inner wall of the housing 1. The front and rear parts of the fiber ball filter layer 32 are fixedly installed on the right side of the inner wall of the housing 1 to the right of the walnut shell filter layer 31. Slide rails 33 are fixedly installed on the front and rear parts of the right side of the inner wall of the housing 1 to the right of the walnut shell filter layer 31 and the fiber ball filter layer 32. Sliding blocks 34 are slidably connected to the inner walls of the four slide rails 33. Spray pipes 35 are fixedly installed on the opposite sides of the four adjacent sliding blocks 34. Several high-pressure nozzles 36 arranged in a linear pattern are fixedly installed on the outer walls of the two spray pipes 35 near the walnut shell filter layer 31 and the fiber ball filter layer 32. Protective covers surrounding the two spray pipes 35 are fixedly installed at the edges of the opposite sides of the four adjacent sliding blocks 34.

[0031] The filtration and impurity removal component 2 enables the interception of suspended solids and automatic slag discharge. A servo motor 26 drives the rope reel 25 to wind and unwind the waterproof rope 27, causing the scraper 22 to slide along the fixed strip 21, scraping the intercepted impurities to the bottom of the cone and discharging them through the discharge pipe 23. This process requires no manual intervention and is highly convenient. The oil removal and backwashing component 3 enables multi-stage oil removal filtration and dynamic backwashing. A motor 312 drives a bevel gear pair to rotate the turntable 316, which, via a pull rod 317, moves the spray pipe 35 up and down along the slide rail 33. High-pressure nozzles 36 perform angled flushing of the filter layer, removing adsorbed oil. This ensures the continuous usability of both filter layers.

[0032] It should be noted that several high-pressure nozzles 36 are set at an angle, with the angle of inclination towards the filter layer ranging from 45° to 60°.

[0033] like Figure 3 and Figure 4 As shown, a mounting bracket 24 is fixedly installed on the left side of the front and rear sides of the housing 1, directly above the scraper 22. A rope reel 25 is rotatably connected to the upper middle part of the mounting bracket 24. A servo motor 26 is fixedly installed on the upper front part of the mounting bracket 24. The output end of the servo motor 26 is fixedly connected to the front end of the rope reel 25. A waterproof rope 27 is wound around the middle of the outer wall of the rope reel 25. The bottom of the waterproof rope 27 passes through the top of the mounting bracket 24 and is fixedly connected to the upper middle part of the scraper 22.

[0034] Servo motor 26 drives rope reel 25 to wind and unwind waterproof rope 27, which in turn drives scraper 22 to slide along fixed bar 21, scraping the intercepted impurities to the conical bottom of coarse filter chamber 5 and discharging them through discharge pipe 23.

[0035] like Figure 4 and Figure 5 As shown, flexible hoses 37 that penetrate the right side of the two protective covers are fixedly installed on the rear of the outer walls of the two spray pipes 35. Water supply pipes 38 are fixedly connected to the front of the two flexible hoses 37, and a connector is fixedly connected to the bottom of the outer wall of the water supply pipes 38.

[0036] The connector of the water supply pipe 38 is used to connect an external water pump, which is connected to a water tank to provide water for backwashing of the walnut shell filter layer 31 and the fiber ball filter layer 32.

[0037] like Figure 4 and Figure 5 As shown, two support frames 39 are fixedly installed on the right side of the front and rear sides of the box 1. The two support frames 39 are located to the right of the walnut shell filter layer 31 and the fiber ball filter layer 32, respectively. There are connecting frames 310 at the upper end of the two support frames 39 close to each other. A fixed frame 311 is fixedly installed in the middle of the upper end of the connecting frame 310. A motor 312 is fixedly connected to the bottom of the inner wall of the fixed frame 311. A bevel gear 313 is fixedly sleeved at the output end of the motor 312. A rotating shaft 314 is rotatably connected to the top of the inner wall of the connecting frame 310, passing through the left and right parts of the fixed frame 311. A bevel gear 315 is fixedly sleeved on the left side of the outer wall of the rotating shaft 314. The outer surface of the bevel gear 313 meshes with the outer surface of the bevel gear 315.

[0038] Motor 312 drives bevel gear pair to rotate turntable 316. Turntable 316 pulls spray pipe 35 up and down along slide rail 33 via tie rod 317. High-pressure nozzle 36 washes the filter layer at an inclined angle. This ensures that the reciprocating movement of spray pipe 35 can clean the filter layer.

[0039] like Figure 5 As shown, turntables 316 are fixedly installed on both the left and right ends of the rotating shaft 314. Pull rods 317 are rotatably connected to the edges of the two turntables 316 on opposite sides. Slide rods 318 that pass through the two support frames 39 are fixedly installed on the front and rear parts of the upper ends of the two protective covers. Top plates are fixedly installed on the upper ends of the four adjacent slide rods 318. The bottoms of the two pull rods 317 are rotatably connected to the middle of the upper ends of the two top plates.

[0040] like Figure 2 As shown, two slag discharge pipes 319 are fixedly installed through the lower right side of the box body 1, located to the left of the walnut shell filter layer 31 and the fiber ball filter layer 32 respectively. A valve is fixedly connected to the bottom of the inner cavity of each of the two slag discharge pipes 319.

[0041] When the walnut shell filter layer 31 and the fiber ball filter layer 32 are backwashed by the high-pressure nozzle 36, the dirt particles washed off are discharged along the slag discharge pipe 319.

[0042] like Figure 1 As shown, a discharge pipe 7 is fixedly installed at the lower right end of the box 1, located to the right of the fiber ball filter layer 32. A sedimentation tank 8 is fixedly connected to the right side of the discharge pipe 7. A clarification tank 9 is fixedly connected to the right side of the sedimentation tank 8. A disinfection tank 10 is fixedly connected to the right side of the clarification tank 9.

[0043] Sedimentation tank 8, clarification tank 9 and disinfection tank 10 enable multi-stage treatment of wastewater.

[0044] The working principle of this utility model is as follows: During use, sewage is pumped into the tank 1 from above the coarse filtration chamber 5. The grid 4 is used to intercept larger suspended solids, and the walnut shell filter layer 31 and fiber ball filter layer 32 are used to remove oil from the water. The filtered sewage is discharged through the discharge pipe 7, and the sedimentation tank 8, clarification tank 9, and disinfection tank 10 realize subsequent multi-stage treatment of sewage.

[0045] In the wastewater treatment plant, the screen 4, walnut shell filter layer 31, and fiber ball filter layer 32 require regular cleaning. The connector of the water supply pipe 38 is used to connect an external water pump, which is connected to a water tank to provide water for backwashing the walnut shell filter layer 31 and fiber ball filter layer 32. A servo motor 26 drives the rope reel 25 to wind and unwind the waterproof rope 27, causing the scraper 22 to slide along the fixed strip 21, scraping the intercepted impurities to the conical bottom of the coarse filter chamber 5 and discharging them through the discharge pipe 23. A motor 312 drives a bevel gear pair to rotate the turntable 316. The turntable 316, via a pull rod 317, pulls the spray pipe 35 up and down along the slide rail 33, causing the high-pressure nozzle 36 to rinse the filter layer at an inclined angle. The inclined angle of the high-pressure nozzle 36 ensures that the spray pipe 35 thoroughly rinses the filter layer during its reciprocating movement. Furthermore, the dirt particles washed down by the high-pressure nozzle 36 from the walnut shell filter layer 31 and the fiber ball filter layer 32 are discharged along the slag discharge pipe 319.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oilfield wastewater treatment filtration and separation device, comprising a housing (1), characterized in that: A fence (4) is fixedly installed on the left side of the inner wall of the box (1). The fence (4) divides the box (1) into a coarse filtration chamber (5) and an oil removal chamber (6). A filter and impurity removal assembly (2) is fixedly installed on the inner wall of the coarse filtration chamber (5), and an oil removal backwash assembly (3) is fixedly installed on the inner wall of the oil removal chamber (6). The filter and impurity removal assembly (2) includes two fixing strips (21). The two fixing strips (21) are fixedly installed on the front and rear sides of the inner wall of the coarse filter chamber (5) on the side away from each other. The two fixing strips (21) are slidably connected to the outside of the two fixing strips (21). The bottom of the scraper (22) is an inclined surface and fits against the left side of the fence (4). The bottom of the coarse filter chamber (5) is a conical structure. The bottom of the coarse filter chamber (5) is fixedly installed with a discharge pipe (23) with a manual valve. The oil removal backflushing assembly (3) includes a walnut shell filter layer (31) and a fiber ball filter layer (32). The front and rear parts of the walnut shell filter layer (31) are fixedly installed on the right side of the inner wall of the housing (1). The front and rear parts of the fiber ball filter layer (32) are fixedly installed on the right side of the inner wall of the housing (1) to the right of the walnut shell filter layer (31). Slide rails are fixedly installed on the front and rear parts of the right side of the inner wall of the housing (1) to the right of both the walnut shell filter layer (31) and the fiber ball filter layer (32). 33) Sliding blocks (34) are slidably connected to the inner walls of the four slide rails (33). Spray pipes (35) are fixedly installed on the opposite sides of the four adjacent slide blocks (34). Several high-pressure nozzles (36) arranged in a linear pattern are fixedly installed on the outer walls of the two spray pipes (35) near the walnut shell filter layer (31) and the fiber ball filter layer (32). Protective covers surrounding the two spray pipes (35) are fixedly installed at the edges of the opposite sides of the four adjacent slide blocks (34).

2. The oilfield wastewater treatment filtration and separation device according to claim 1, characterized in that: A mounting bracket (24) is fixedly installed on the left side of the front and rear sides of the box (1) at a position directly above the scraper (22). A rope reel (25) is rotatably connected to the upper middle part of the mounting bracket (24). A servo motor (26) is fixedly installed on the upper front part of the mounting bracket (24). The output end of the servo motor (26) is fixedly connected to the front end of the rope reel (25). A waterproof rope (27) is wound around the middle of the outer wall of the rope reel (25). The bottom of the waterproof rope (27) passes through the top of the mounting bracket (24) and is fixedly connected to the upper middle part of the scraper (22).

3. The oilfield wastewater treatment filtration and separation device according to claim 1, characterized in that: The outer walls of the two spray pipes (35) are each fixedly installed with a flexible hose (37) that passes through the right side of the two protective covers. The front of the two flexible hoses (37) is fixedly connected with a water supply pipe (38). The bottom of the outer wall of the water supply pipe (38) is fixedly connected with a connector.

4. The oilfield wastewater treatment filtration and separation device according to claim 1, characterized in that: Two support frames (39) are fixedly installed on the right side of the front and rear sides of the box (1). The two support frames (39) are located to the right of the walnut shell filter layer (31) and the fiber ball filter layer (32), respectively. There is a connecting frame (310) at the upper end of the two support frames (39) close to each other. A fixed frame (311) is fixedly installed in the middle of the upper end of the connecting frame (310). A motor (312) is fixedly connected to the bottom of the inner wall of the fixed frame (311). A bevel gear (313) is fixedly sleeved at the output end of the motor (312). A rotating shaft (314) that passes through the left and right parts of the fixed frame (311) is rotatably connected to the top of the inner wall of the connecting frame (310). A bevel gear (315) is fixedly sleeved on the left side of the outer wall of the rotating shaft (314). The outer surface of the bevel gear (313) meshes with the outer surface of the bevel gear (315).

5. The oilfield wastewater treatment filtration and separation device according to claim 4, characterized in that: Turntables (316) are fixedly installed on both the left and right ends of the rotating shaft (314). Pull rods (317) are rotatably connected to the edges of the two turntables (316) on opposite sides. Slide rods (318) that pass through the two support frames (39) are fixedly installed on the front and rear parts of the upper ends of the two protective covers. Top plates are fixedly installed on the upper ends of the four adjacent slide rods (318). The bottoms of the two pull rods (317) are rotatably connected to the middle of the upper ends of the two top plates.

6. The oilfield wastewater treatment filtration and separation device according to claim 1, characterized in that: Two slag discharge pipes (319) are fixedly installed through the lower right side of the box (1), located to the left of the walnut shell filter layer (31) and the fiber ball filter layer (32), respectively. A valve is fixedly connected to the bottom of the inner cavity of each of the two slag discharge pipes (319).

7. The oilfield wastewater treatment filtration and separation device according to claim 1, characterized in that: A discharge pipe (7) is fixedly installed at the lower right end of the box (1) to the right of the fiber ball filter layer (32). A sedimentation tank (8) is fixedly connected to the right side of the discharge pipe (7). A clarification tank (9) is fixedly connected to the right side of the sedimentation tank (8). A disinfection tank (10) is fixedly connected to the right side of the clarification tank (9).

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