Oil field water injection well washing sewage recovery treatment device

Abstract

The utility model relates to the field of oil field water injection well washing sewage, and discloses an oil field water injection well washing sewage recycling device which comprises a movable frame and a portal frame, the portal frame is erected above the movable frame, a first servo motor is fixedly connected to the inner front end of the portal frame, an output shaft of the first servo motor is fixedly connected with a screw rod, and the output shaft of the first servo motor is fixedly connected with a second servo motor. A threaded seat movably sleeves the outside of the screw rod, a sewage cylinder is fixedly connected to the top end of the threaded seat, a first servo motor is arranged on the left side of the rear part of the moving frame, a second servo motor is fixedly connected to the left side of the top end of the moving frame, and an output shaft of the second servo motor is fixedly sleeved with the screw rod. According to the oil field water injection well washing sewage recovery treatment device, the guide wheels are arranged, and through matched movement in the horizontal direction and the front-back direction, the sewage falling opening cannot be blocked when moving and intercepting large-particle solids are intercepted by the intercepting plate, the sufficient intercepting rate of the intercepting plate is guaranteed, the blocking problem of fixed-point water injection is avoided, and the blocking problem of the intercepting plate is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield water injection well flushing sewage, in particular to an oilfield water injection well flushing sewage recovery and treatment device. Background Art

[0002] Oilfield injection wells are essential equipment in oilfield development. Over long-term use, the inner walls of these wells are prone to buildup of dirt and sediment, leading to reduced injection efficiency. Therefore, regular cleaning is necessary. This process generates large amounts of wastewater, which contains pollutants such as suspended matter, solid particles, and oil. Direct discharge without treatment can have a serious impact on the environment.

[0003] The current well-washing wastewater recovery and treatment device adopts a fixed interception plate structure. The wastewater flows to the interception plate through a fixed drop point. Due to the long-term accumulation of oil and solid particles at a fixed point, the interception plate is easily blocked, resulting in the sewage being unable to flow normally. New interception plates need to be frequently replaced, which wastes materials and increases labor costs. Therefore, how to improve the interception plate design is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The purpose of the utility model is to provide an oilfield water injection well washing wastewater recovery and treatment device to solve the problem in the above background technology that the interception plate is easily blocked and the wastewater cannot flow normally.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A device for recycling and treating wastewater from well washing in an oilfield water injection well, comprising a movable frame and a gantry frame, a gantry frame being arranged above the movable frame, a first servo motor being fixedly connected to the front end of the gantry frame, an output shaft of the first servo motor being fixedly connected to a screw, a threaded seat being movably sleeved on the outside of the screw, a sewage barrel being fixedly connected to the top end of the threaded seat, a first servo motor being arranged on the left rear side of the movable frame, a second servo motor being fixedly connected to the left top end of the movable frame, a screw being fixedly sleeved on the output shaft of the second servo motor, the screw being movably assembled in the movable frame, the screw being meshed with the first servo motor, an interception plate being arranged in the movable frame, and the interception plate being located below the sewage barrel.

[0006] As a further technical solution of the present invention, positioning holes are provided at the four corners of the intercepting plate, four groups of positioning columns are welded to the top of the movable frame, and the intercepting plate is sleeved on the top of the movable frame through the positioning columns.

[0007] As a further technical solution of the present invention, guide rails are provided on the inner walls on both sides of the mobile frame, four groups of supports are vertically fixed below the mobile frame, and guide wheels are horizontally installed on the top of each group of supports, and the guide wheels and the guide rails form a rolling connection.

[0008] As a further technical solution of the present invention, the length of the screw is greater than the width of the interception plate, and the bottom end of the sewage barrel does not contact the interception plate.

[0009] As a further technical solution of the present invention, a processing pool is arranged under the intercepting plate, and a variable speed motor is fixedly connected to the left side wall of the processing pool. The output shaft of the variable speed motor extends into the processing pool and is fixedly connected to a stirring shaft, and multiple groups of stirring rods are staggered at the top and bottom ends of the stirring shaft.

[0010] As a further technical solution of the present invention, a scraper is fixedly connected to the end of the stirring rod, and the treatment tank is a cylinder with an open top.

[0011] As a further technical solution of the present invention, a separation box is provided on the right side of the treatment pool, a pump is installed between the separation box and the treatment pool, a pumping pipe is connected between the input end of the pump and the treatment pool, and a diverter is installed between the output end of the pump and the separation box.

[0012] As a further technical solution of the present invention, a filter screen is placed at the bottom end of the separation box, and the filter screen is detachable.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the oilfield water injection well washing wastewater recovery and treatment device not only ensures the sufficient interception rate of the interception plate, avoids the problem of clogging of fixed-point water injection, and prevents the dirt from sticking to the wall and drying up and being difficult to handle, but also realizes solid-liquid separation;

[0014] (1) By setting a guide wheel, a guide rail, a mobile frame, a sewage barrel, an interception plate, a gantry, a second servo motor, a positioning column, a first servo motor, a screw, and a threaded seat, during recycling, the sewage flows from the bottom outlet of the sewage barrel to the interception plate, and the screw is driven to rotate by the first servo motor, so that the sewage barrel moves back and forth above the interception plate, and then the second servo motor is driven to rotate by the screw. The first servo motor engaged with the second servo motor is fixed, and the meshing force pushes the mobile frame to move horizontally. Through the coordinated movement in the horizontal and front-to-back directions, the sewage drop port moves, and the interception plate will not be blocked when intercepting large particles of solids, thereby ensuring a sufficient interception rate of the interception plate and avoiding the blockage problem of fixed-point water injection;

[0015] (2) The sewage enters the treatment tank after intercepting large suspended solids by setting up a treatment tank, a variable speed motor, a stirring shaft, a stirring rod, and a scraper. The variable speed motor is started, and the stirring shaft is stirred at high speed to fully and quickly mix the flocculant and sewage. The fine suspended solids flocculate and settle to the bottom of the treatment tank. During the stirring and mixing process, the scraper will stick to the inner wall of the treatment tank to scrape off the sticky inner wall, so as to prevent the dirt from sticking to the wall and drying up and being difficult to handle.

[0016] (3) By setting up a suction pipe, a suction pump, a diverter, and a filter, after the stirring shaft stops stirring, the sewage is sucked into the suction pump through the suction pipe and evenly sprinkled on the filter through the diverter, further separating the solid and liquid, intercepting the fine suspended matter in the separation box, and the filtered sewage is discharged from the bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0018] Figure 2 This is a schematic diagram of the top view of the sewage tank of the present utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the gantry of the present invention from a top view;

[0020] Figure 4 This is a schematic diagram of the front cross-sectional structure of the treatment pool of the present invention.

[0021] In the figure: 1. Support; 2. Guide wheel; 3. Guide rail; 4. Mobile frame; 5. Sewage tank; 6. Interceptor plate; 7. Gantry; 8. Second servo motor; 9. Treatment tank; 10. Variable speed motor; 11. Stirring shaft; 12. Stirring rod; 13. Scraper; 14. Suction tube; 15. Suction pump; 16. Filter; 17. Diverter; 18. Separation box; 19. Positioning column; 20. First servo motor; 21. Screw; 22. Threaded seat. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4The utility model provides an embodiment: an oilfield water injection well washing wastewater recovery and treatment device, including a mobile frame 4 and a gantry frame 7, a gantry frame 7 is set above the mobile frame 4, the front end of the gantry frame 7 is fixedly connected to a first servo motor 20, the output shaft of the first servo motor 20 is fixedly connected to a screw 21, the outer surface of the screw 21 is movably sleeved with a threaded seat 22, the top of the threaded seat 22 is fixedly connected to a sewage barrel 5, a first servo motor 20 is set on the left side of the rear of the mobile frame 4, a second servo motor 8 is fixedly connected to the left side of the top of the mobile frame 4, the output shaft of the second servo motor 8 is fixedly sleeved with a screw 21, the screw 21 It is movably assembled in the mobile frame 4, and the screw 21 is engaged with the first servo motor 20. An interception plate 6 is assembled in the mobile frame 4, and the interception plate 6 is located below the sewage tank 5. Positioning holes are provided at the four corners of the interception plate 6. Four groups of positioning columns 19 are welded to the top of the mobile frame 4. The interception plate 6 is sleeved on the top of the mobile frame 4 through the positioning columns 19. Guide rails 3 are provided on the inner walls on both sides of the mobile frame 4. Four groups of supports 1 are vertically fixed below the mobile frame 4. A guide wheel 2 is horizontally installed on the top of each group of supports 1. The guide wheel 2 and the guide rail 3 form a rolling connection. The length of the screw 21 is greater than the width of the interception plate 6, and the bottom end of the sewage tank 5 does not contact the interception plate 6.

[0024] Specifically, if Figure 1 、 Figure 2 and Figure 3 As shown, during recycling, the sewage flows from the bottom outlet of the sewage barrel 5 to the interception plate 6, and the screw 21 is driven to rotate by the first servo motor 20, so that the sewage barrel 5 moves back and forth above the interception plate 6, and then the second servo motor 8 is driven to rotate by the screw 21. The first servo motor 20 engaged with the second servo motor 8 is fixed, and the engaging force pushes the movable frame 4 to move horizontally. Through the coordinated movement in the horizontal and front-to-back directions, the sewage drop outlet moves, and the interception plate 6 will not be blocked when intercepting large particles of solids, thereby ensuring a sufficient interception rate of the interception plate 6.

[0025] A processing tank 9 is provided below the intercepting plate 6. A variable speed motor 10 is fixedly connected to the left side wall of the processing tank 9. The output shaft of the variable speed motor 10 extends into the processing tank 9 and is fixedly connected to a stirring shaft 11. A plurality of groups of stirring rods 12 are staggered at the top and bottom ends of the stirring shaft 11. A scraper 13 is fixedly connected to the end of the stirring rod 12. The processing tank 9 is a cylinder with an open top.

[0026] Specifically, if Figure 1 and Figure 4 As shown, after intercepting the large suspended particles, the sewage enters the treatment tank 9, the variable speed motor 10 is started, and the flocculant and sewage are fully and quickly mixed through the high-speed stirring of the stirring shaft 11, and the fine suspended particles are flocculated and precipitated to the bottom of the treatment tank 9. During the stirring and mixing process, the scraper 13 will adhere to the inner wall of the treatment tank 9 to scrape off the sticky inner wall.

[0027] A separation box 18 is provided on the right side of the treatment tank 9. A pump 15 is installed between the separation box 18 and the treatment tank 9. A pumping pipe 14 is connected between the input end of the pump 15 and the treatment tank 9. A diverter 17 is installed between the output end of the pump 15 and the separation box 18. A filter screen 16 is placed at the bottom end of the separation box 18. The filter screen 16 is detachable.

[0028] Specifically, if Figure 1 As shown, after the stirring shaft 11 stops stirring, the sewage is sucked into the suction pump 15 through the suction pipe 14 and evenly sprinkled on the filter 16 through the diverter 17 for further solid-liquid separation, and the fine suspended matter is intercepted in the separation box 18, while the filtered sewage is discharged from the bottom.

[0029] Working principle: During recycling, sewage flows from the bottom outlet of the sewage barrel 5 to the interception plate 6, and the first servo motor 20 drives the screw 21 to rotate, so that the sewage barrel 5 moves back and forth above the interception plate 6, and then the screw 21 drives the second servo motor 8 to rotate. The first servo motor 20 engaged with the second servo motor 8 is fixed, and the meshing force pushes the movable frame 4 to move horizontally. Through the coordinated movement in the horizontal and front-to-back directions, the sewage drop outlet moves. After the first filtration, the sewage enters the treatment tank 9, and the variable speed motor 10 is started. The stirring shaft 11 stirs at high speed to make the flocculant and sewage fully and quickly mixed. Fine particles of suspended matter flocculate and settle to the bottom of the treatment tank 9. During the stirring and mixing process, the scraper 13 will adhere to the inner wall of the treatment tank 9 to scrape off the sticky inner wall. After the stirring shaft 11 stops stirring, the sewage is sucked into the suction pump 15 through the suction pipe 14 and evenly sprinkled on the filter screen 16 through the diverter 17 for further solid-liquid separation, intercepting the fine suspended matter in the separation box 18, and the filtered sewage is discharged from the bottom.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An oilfield water injection well flushing wastewater recovery and treatment device, comprising a mobile frame (4) and a gantry frame (7), characterized in that: A gantry (7) is mounted above the movable frame (4), and a first servo motor (20) is fixedly connected to the front end of the gantry (7), and an output shaft of the first servo motor (20) is fixedly connected to a screw (21), and a threaded seat (22) is movably sleeved on the outside of the screw (21), and a sewage tank (5) is fixedly connected to the top of the threaded seat (22). A first servo motor (20) is arranged on the left side of the rear of the movable frame (4), and a second servo motor (8) is fixedly connected to the left side of the top of the movable frame (4), and an output shaft of the second servo motor (8) is fixedly sleeved on the screw (21), and the screw (21) is movably assembled in the movable frame (4), and the screw (21) is meshedly connected to the first servo motor (20). An interception plate (6) is assembled in the movable frame (4), and the interception plate (6) is located below the sewage tank (5).

2. The oilfield water injection well flushing wastewater recovery and treatment device according to claim 1, characterized in that: Positioning holes are provided at the four corners of the intercepting plate (6), four groups of positioning columns (19) are welded to the top of the mobile frame (4), and the intercepting plate (6) is sleeved on the top of the mobile frame (4) through the positioning columns (19).

3. The oilfield water injection well flushing wastewater recovery and treatment device according to claim 1, characterized in that: Guide rails (3) are provided on the inner walls on both sides of the movable frame (4). Four groups of supports (1) are vertically fixed below the movable frame (4). A guide wheel (2) is horizontally installed on the top of each group of supports (1). The guide wheel (2) and the guide rail (3) form a rolling connection.

4. The oilfield water injection well flushing wastewater recovery and treatment device according to claim 1, characterized in that: The length of the screw (21) is greater than the width of the interception plate (6), and the bottom end of the sewage barrel (5) does not contact the interception plate (6).

5. The oilfield water injection well flushing wastewater recovery and treatment device according to claim 1, characterized in that: A processing pool (9) is provided below the intercepting plate (6), and a variable speed motor (10) is fixedly connected to the left side wall of the processing pool (9). The output shaft of the variable speed motor (10) extends into the processing pool (9) and is fixedly connected to a stirring shaft (11). A plurality of groups of stirring rods (12) are staggeredly provided at the top and bottom ends of the stirring shaft (11).

6. The oilfield water injection well flushing wastewater recovery and treatment device according to claim 5, characterized in that: The end of the stirring rod (12) is fixedly connected to a scraper (13), and the treatment tank (9) is a cylinder with an open top.

7. The oilfield water injection well flushing wastewater recovery and treatment device according to claim 5, characterized in that: A separation box (18) is provided on the right side of the treatment tank (9), a pump (15) is installed between the separation box (18) and the treatment tank (9), a pumping pipe (14) is connected between the input end of the pump (15) and the treatment tank (9), and a diverter (17) is installed between the output end of the pump (15) and the separation box (18).

8. The oilfield water injection well flushing wastewater recovery and treatment device according to claim 7, characterized in that: A filter screen (16) is placed at the bottom of the separation box (18), and the filter screen (16) is detachable.

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