A device for recycling salt slurry and fresh brine mixed injection well

Abstract

The utility model discloses a kind of brine slurry and brackish water mixed injection well's recycling device, comprising: base, buffer tank, feeding mechanism, recovery pipe, water inlet mechanism, mixed liquid injection well pump and main well;Wherein, the base is installed with the buffer tank, the buffer tank side is provided with the feeding mechanism, the feeding mechanism with the buffer tank inside is communicated;The buffer tank upper portion is provided with the water inlet mechanism, the water inlet mechanism with the buffer tank inside is communicated;The buffer tank lower portion is provided with the recovery pipe, the recovery pipe one end with the buffer tank inside is communicated, other end with the mixed liquid injection well pump is communicated;The main well is connected by communicating pipe with the mixed liquid injection well pump far from the recovery pipe one end is communicated.The utility model can realize that brine slurry and brackish water slowly and evenly mix, make brine slurry dilution effect significantly improve.

Description

Technical Field

[0001] This utility model relates to the field of salt mud treatment, specifically to a reuse device for injecting salt mud and brine into wells. Background Technology

[0002] During the brine production process, salt mud is generated. As the production scale continues to increase, the content of salt mud also gradually increases, making the treatment of salt mud a difficult problem for the industry.

[0003] In existing technologies, the brine produced by brine extraction equipment gradually settles at the bottom of the well. Furthermore, due to its high chloride ion content, cement-based equipment cannot fully utilize it, increasing the difficulty of brine treatment and failing to adhere to clean production principles. Current technologies typically involve stirring the brine to prevent sedimentation, with diluents added during the stirring process. However, the diluents cannot be added slowly and evenly, resulting in unsatisfactory dilution effects and failing to maintain a high-quality, non-settling state. Moreover, the cleaning process for the equipment after dilution is cumbersome and complex.

[0004] Therefore, a recycling device for injecting a mixture of salt mud and brine into wells is needed to solve the above-mentioned technical problems. Utility Model Content

[0005] To achieve the above objectives, this utility model provides the following technical solution: a reuse device for injecting a mixture of salt mud and brine, comprising: a base, a buffer tank, a feeding mechanism, a recovery pipe, a water inlet mechanism, a mixed liquid injection pump, and a main well;

[0006] The base is equipped with the buffer tank, and the feeding mechanism is provided on one side of the buffer tank. The feeding mechanism is connected to the inside of the buffer tank.

[0007] The buffer tank is provided with a water inlet mechanism at its upper part, and the water inlet mechanism is connected to the inside of the buffer tank;

[0008] The buffer tank is provided with a recovery pipe at the bottom. One end of the recovery pipe is connected to the inside of the buffer tank, and the other end is connected to the mixed liquid injection pump.

[0009] The main well is connected to the end of the mixed liquid injection pump away from the recovery pipe via a connecting pipe.

[0010] Furthermore, preferably, the buffer tank includes: a tank body and a partition plate;

[0011] The partition plate divides the tank into upper and lower chambers, with the upper chamber being a water storage chamber and the lower chamber being a mixing chamber.

[0012] Furthermore, as a preferred embodiment, the feeding mechanism includes: a feeding pipe, a spiral shaft, a first injection pipe, a rotating shaft, a driving component, and a salt mud injection pump;

[0013] The feed tube is rotatably equipped with the spiral shaft inside. One end of the spiral shaft rotatably passes through the feed tube and extends to the outside of it, where it is connected to the rotating shaft. The end of the rotating shaft away from the spiral shaft is connected to the driving component.

[0014] The end of the feed pipe away from the rotating shaft is connected to the mixing chamber, and the first injection pipe is connected to the peripheral wall of the end of the feed pipe near the rotating shaft;

[0015] The end of the first injection pipe away from the feed pipe is connected to an external salt mud supply tank, and the salt mud injection pump is installed inside the first injection pipe.

[0016] Furthermore, as a preferred embodiment, the water inlet mechanism includes: a ring pipe, a branch pipe, a second injection pipe, and a saline injection pump;

[0017] Among them, three sets of branch pipes are arranged on the inner circumference of the ring pipe, and one end of each set of branch pipes is connected to the ring pipe and the other end is connected to the water storage chamber.

[0018] The second injection pipe is provided on the outside of the ring pipe. One end of the second injection pipe is connected to the ring pipe, and the other end is connected to the external brine supply tank. The brine injection pump is installed inside the second injection pipe.

[0019] Furthermore, as a preferred embodiment, the buffer tank further includes: a central shaft, a rotating plate, stirring blades, and a wall scraping assembly;

[0020] The buffer tank has a central shaft rotatably mounted inside, with one end of the central shaft passing through the top of the buffer tank and the other end passing through the partition plate.

[0021] The central shaft is located on the outer wall of the water storage chamber and six sets of rotating plates are arranged circumferentially. The central shaft is located on the outer wall of the mixing chamber and the stirring blades are arranged. The bottom end of the central shaft is provided with a telescopic part.

[0022] The bottom of the buffer tank is equipped with the wall scraping assembly.

[0023] Furthermore, preferably, the top and bottom of each set of rotating plates slide against the top of the buffer tank and the top of the partition plate.

[0024] Furthermore, as a preferred embodiment, the buffer tank further includes: a dispensing area, a storage area, and a flow outlet;

[0025] The six sets of rotating plates divide the water storage chamber into six areas, with three of the areas arranged in an alternating pattern serving as the dispensing area and the other three areas arranged in an alternating pattern serving as the storage area.

[0026] The partition plate located within the dispersing zone has multiple sets of downward flow holes evenly distributed, and the three sets of storage zones are respectively connected to the three sets of branch pipes.

[0027] Furthermore, as a preferred embodiment, the wall scraping assembly includes: a chassis, a ring seat, a scraper, a cavity, and a clamping element;

[0028] The chassis is rotatably connected to the bottom of the buffer tank at one end, and the ring seat is provided on the other end. Multiple sets of scrapers are arranged around the circumference of the end of the ring seat away from the chassis.

[0029] The chassis has a cavity at its center, and the clamping element is installed inside the cavity.

[0030] Furthermore, as a preferred embodiment, the scraper is arc-shaped, the outer wall of the scraper is in close contact with the inner wall of the tank, and scraping tips are provided on both sides of the scraper.

[0031] Furthermore, as a preferred embodiment, the base is provided with a support for a stable feeding mechanism, and a stabilizing seat is provided on the base. A motor is installed at the end of the stabilizing seat away from the base, and the output end of the motor is connected to the central shaft.

[0032] Compared with the prior art, this utility model provides a reuse device for injecting a mixture of salt mud and brine into wells, which has the following beneficial effects:

[0033] Advantage 1: This invention recycles and injects salt mud into the well for treatment. Before injection, the salt mud undergoes pretreatment, primarily involving mixing and diluting to prevent settling. The treated salt mud is then in a high-quality, non-settling state, and subsequently injected into the main well via a mixing injection pump after passing through a recovery pipe, adhering to clean and environmentally friendly production principles. In addition to the main well, this invention also includes a backup well, connected to the mixing injection pump via a secondary pipe. A backup valve is installed at the connection point. This backup well serves the same function as the main well, used only in case of an anomaly in the main well.

[0034] Advantage 2: This utility model is equipped with a feeding mechanism, which can perform preliminary treatment of the salt mud solution to be treated, reduce its viscosity, and facilitate subsequent mixing and dilution.

[0035] Advantage 3: This invention allows for the simultaneous and slow mixing of the brine and brine as the brine flows slowly and evenly from the storage chamber into the mixing chamber, achieving a gradual and uniform mixing of the brine and brine. This significantly improves the dilution effect of the brine, preventing poor dilution caused by directly injecting large amounts of brine into the brine in a short time. The brine diluted using this invention remains in a high-quality, non-sedimenting state, laying a solid foundation for subsequent well injection recovery.

[0036] Advantage 4: This utility model makes it easier for workers to find the final dilution point of the diluted but not completely diluted brine, effectively preventing the excessive addition of brine, preventing over-dilution of the brine, and avoiding resource waste.

[0037] Advantage 5: This utility model can save workers the cleaning process inside the buffer tank, providing convenience for workers and also providing a basis for the next mixing and dilution. Attached Figure Description

[0038] Figure 1 A schematic diagram of a recycling device for injecting a mixture of salt mud and brine into a well;

[0039] Figure 2 Diagram showing the flow direction of salt mud in a well-injection device that mixes salt mud with brine.

[0040] Figure 3 A schematic diagram of the feeding mechanism of a recycling device for injecting a mixture of salt mud and brine into a well;

[0041] Figure 4 A schematic diagram of the buffer tank structure of a reuse device for injecting a mixture of salt mud and brine into a well;

[0042] Figure 5 A schematic diagram of the water intake mechanism of a recycling device for injecting a mixture of salt mud and brine into a well;

[0043] Figure 6 A schematic diagram of the wall scraping component structure of a recycling device for injecting a mixture of salt mud and brine into a well;

[0044] In the diagram: 1. Base; 2. Buffer tank; 21. Tank body; 22. Partition plate; 23. Central shaft; 231. Telescopic part; 24. Rotating plate; 25. Spreading area; 26. Storage area; 27. Downflow hole; 28. Stirring blade; 29. ​​Wall scraping assembly; 291. Chassis; 292. Ring seat; 293. Scraper; 2931. Scraping tip; 294. Cavity; 295. Clamping part; 3. Feeding mechanism; 31. Feeding pipe; 32. Spiral shaft; 33. First injection pipe; 34. Rotating shaft; 35. Drive component; 4. Recovery pipe; 5. Water inlet mechanism; 51. Ring pipe; 52. Branch pipe; 53. Second injection pipe; 6. Mixed liquid injection pump; 7. Main well; 8. Support; 9. Stabilizing seat; 10. Motor. Detailed Implementation

[0045] Please see Figures 1-6 This utility model provides a reuse device for injecting a mixture of salt mud and brine into a well, comprising: a base 1, a buffer tank 2, a feeding mechanism 3, a recovery pipe 4, a water inlet mechanism 5, a mixed liquid injection pump 6, and a main well 7.

[0046] The base 1 is equipped with the buffer tank 2, and the buffer tank 2 is provided with the feeding mechanism 3 on one side. The feeding mechanism 3 is connected to the inside of the buffer tank 2.

[0047] The buffer tank 2 is provided with the water inlet mechanism 5 on its upper part, and the water inlet mechanism 5 is connected to the inside of the buffer tank 2.

[0048] The buffer tank 2 is provided with the recovery pipe 4 at the bottom. One end of the recovery pipe 4 is connected to the inside of the buffer tank 2, and the other end is connected to the mixed liquid injection pump 6.

[0049] The main well 7 is connected to the end of the mixed liquid injection pump 6 away from the recovery pipe 4 via a connecting pipe.

[0050] In this embodiment, to comply with the principles of clean and environmentally friendly production, the present invention recycles the salt mud and injects it into the well for treatment. Before the salt mud is recycled and injected into the well, it undergoes pretreatment, primarily a mixing and dilution process to prevent sedimentation.

[0051] Specifically: the feeding mechanism 3 injects the salt mud solution to be treated into the buffer tank 2, and the water inlet mechanism 5 injects the brine solution into the buffer tank 2. The two are mixed and stirred to dilute the salt mud solution. After treatment, the salt mud solution will be in a high-quality, non-sedimentation state. Then, after passing through the recovery pipe 4, it is recovered by the mixing injection pump 6 and injected into the main well 7 for subsequent use or treatment. It should be noted that in addition to the main well 7, this utility model also has a backup well. The backup well is connected to the mixing injection pump through a secondary pipe, and a backup valve is installed at the connection point. This backup well has the same function as the main well 7 and is only used when the main well 7 malfunctions.

[0052] Furthermore, the buffer tank 2 includes: a tank body 21 and a partition plate 22;

[0053] The partition plate 22 divides the tank 21 into upper and lower chambers, with the upper chamber being a water storage chamber and the lower chamber being a mixing chamber.

[0054] Furthermore, the feeding mechanism 3 includes: a feeding pipe 31, a spiral shaft 32, a first injection pipe 33, a rotating shaft 34, a driving component 35, and a salt mud injection pump;

[0055] The feed pipe 31 is rotatably provided with a spiral shaft 32. One end of the spiral shaft 32 rotatably passes through the feed pipe 31 and extends to the outside of it to be connected to the rotating shaft 34. The end of the rotating shaft 34 away from the spiral shaft 32 is connected to the driving member 35.

[0056] The end of the feed pipe 31 away from the rotating shaft 34 is connected to the mixing chamber, and the first injection pipe 33 is connected to the peripheral wall of the end of the feed pipe 31 near the rotating shaft 34.

[0057] The end of the first injection pipe 33 away from the feed pipe 31 is connected to an external salt mud supply tank, and the salt mud injection pump is installed inside the first injection pipe 33.

[0058] In this embodiment, please refer to Figure 3 As shown, the external salt mud supply tank injects the salt mud to be treated into the feed pipe 31 via the salt mud injection pump and the first injection pipe 33. Then, the drive unit 35 starts to drive the screw shaft 32 to rotate via the rotating shaft 34. Simultaneously, the salt mud to be treated in the feed pipe 31 moves spirally along the direction of the feed pipe 31 with the spiral blades on the screw shaft 32. This spiral movement performs preliminary treatment of the salt mud, reducing its viscosity and facilitating subsequent mixing and dilution. After the preliminary treatment is completed, the salt mud is finally injected into the mixing chamber until it fills two-thirds of the total volume.

[0059] It should be noted that the driving component 35 can be a drive motor or any other component that can drive the screw shaft 32 to rotate via the rotating shaft 34. The screw shaft 32 is a component in common screw conveyor devices.

[0060] Furthermore, the water inlet mechanism 5 includes: a ring pipe 51, a branch pipe 52, a second injection pipe 53, and a saline injection pump;

[0061] Among them, three sets of branch pipes 52 are arranged on the inner circumference of the ring pipe 51. One end of each set of branch pipes 52 is connected to the ring pipe 51, and the other end is connected to the water storage chamber.

[0062] The second injection pipe 53 is provided on the outside of the ring pipe 51. One end of the second injection pipe 53 is connected to the ring pipe 51, and the other end is connected to the external brine supply tank. The brine injection pump is installed inside the second injection pipe 53.

[0063] Furthermore, the buffer tank 2 also includes: a central shaft 23, a rotating plate 24, stirring blades 28, and a wall scraping assembly 29;

[0064] The buffer tank 2 has a central shaft 23 rotatably mounted inside it. One end of the central shaft 23 passes through the top of the buffer tank 2, and the other end passes through the partition plate 22.

[0065] The central shaft 23 is located on the outer wall of the water storage chamber and six sets of rotating plates 24 are arranged around its circumference. The central shaft 23 is located on the outer wall of the mixing chamber and the stirring blades 28 are arranged on its outer wall. The bottom end of the central shaft 23 is provided with a telescopic part 231.

[0066] The bottom of the buffer tank 2 is provided with the wall scraping assembly 29.

[0067] Furthermore, the top and bottom of each set of rotating plates 24 slide against the top of the interior of the buffer tank 2 and the top of the partition plate 22.

[0068] Furthermore, the buffer tank 2 also includes: a dispensing area 25, a storage area 26, and a flow outlet 27;

[0069] The six sets of rotating plates 24 divide the water storage chamber into six areas, three of which are staggered and arranged as the dispersing area 25, and the other three are staggered and arranged as the storage area 26.

[0070] The partition plate 22 located within the dispersing zone 25 has multiple sets of downflow holes 27 evenly distributed, and the three sets of storage zones 26 are respectively connected to the three sets of branch pipes 52.

[0071] For a preferred embodiment, please refer to Figure 4 and Figure 5As shown, it should be noted that before treating the salt mud solution, each rotating plate 24 is in its initial position (e.g., Figure 5 As shown, the initial position of the rotating plate 24 is its position at the junction of the dispersing area 25 and the storage area 26. A control valve is also provided at the connection between the second injection pipe 53 and the ring pipe 51.

[0072] First, the control valve is opened, and the external saline supply tank injects saline into the ring pipe 51 through the saline injection pump and the second injection pipe 53. As the saline is continuously injected, the saline content in the three storage areas 26 in the water storage chamber will continue to increase until it is full. Then the control valve is closed.

[0073] At this point, both the brine and the brine solution have been added. Start the motor 10, and its output will drive the central shaft 23 to rotate continuously at a low speed. The portion of the central shaft 23 located within the water storage chamber will drive each rotating plate 24 to rotate synchronously. At this time, the brine located in each storage zone 26 will be propelled by the rotation of the rotating plates 24 towards the adjacent distributing zone 25, and then flow slowly and evenly through each downstream orifice 27 located in the distributing zone 25 into the mixing chamber.

[0074] Simultaneously, the portion of the central shaft 23 located within the mixing chamber will drive the stirring blades 28 to rotate synchronously. As the brine slowly and evenly flows from the storage chamber into the mixing chamber, the brine solution is stirred, achieving a slow and uniform mixing of the brine and brine. This significantly improves the dilution effect of the brine solution, preventing poor dilution caused by directly injecting large amounts of brine into the brine solution in a short time. The brine solution diluted using this method can be in a high-quality, non-settling state, laying a solid foundation for subsequent well injection recovery.

[0075] It is important to note that the control valve is opened after the brine in each storage zone 26 has finished flowing down, but before the brine has been completely diluted. At this point, the brine will continue to be injected into the storage zone 26, but unlike before, the central shaft 23 is now driving the rotating plates 24 to rotate. That is, the brine entering the storage zone 26 this time will be directly carried by the rotating plates 24 into the dispensing zone 25 for further flow.

[0076] However, compared to the above, this time the brine does not fill the storage area 26 before flowing into the distribution area 25. Therefore, the flow rate of brine into the mixing chamber will be relatively reduced compared to the above, allowing for a smaller and more uniform addition of brine to the nearly diluted salt mud solution. This makes it easier for staff to locate the final dilution point of the diluted but not completely diluted salt mud solution, effectively preventing the over-addition of brine, excessive dilution of the salt mud solution, and avoiding resource waste.

[0077] Furthermore, the wall scraping assembly 29 includes: a chassis 291, a ring seat 292, a scraper 293, a cavity 294, and a clamping member 295;

[0078] The chassis 291 is rotatably connected to the bottom of the buffer tank 2 at one end, and the ring seat 292 is provided on the other end. Multiple sets of scrapers 293 are arranged circumferentially at the end of the ring seat 292 away from the chassis 291.

[0079] The chassis 291 has a cavity 294 at its center, and the clamping member 295 is disposed inside the cavity 294.

[0080] Furthermore, the scraper 293 is arc-shaped, the outer wall of the scraper 293 is in close contact with the inner wall of the tank 21, and scraping tips 2931 are provided on both sides of the scraper 293.

[0081] In this embodiment, please refer to Figure 6 As shown, after the brine and salt water are completely mixed and discharged from the buffer tank 2, the telescopic part 231 at the bottom of the central shaft 23 begins to extend vertically downwards and enters the cavity 294. Then, the clamping part 295 locks the telescopic part 231 in place. At this time, the scrapers 293 on the ring seat 292 will rotate synchronously with the central shaft 23. During rotation, the scraping tips 2931 scrape the inner wall of the buffer tank 2. During rotation, the rotating plates 24 can also scrape away any remaining brine on the partition plate 22, assisting in its complete downward flow. This saves workers the trouble of cleaning the inside of the buffer tank 2, providing convenience and preparing for the next mixing and dilution.

[0082] It should be noted that the telescopic part 231 can be a telescopic rod, and the locking member 295 can lock the telescopic part 231 in the manner commonly used spring pin locking. The type of telescopic part 231 is not limited to the above, nor is the locking method between it and the locking member 295 limited to the above, as long as it can realize the telescopic and locking operations.

[0083] Furthermore, a support 8 for stabilizing the feeding mechanism 3 is provided on the base 1, and a stabilizing seat 9 is provided on the base 1. A motor 10 is installed at the end of the stabilizing seat 9 away from the base 1, and the output end of the motor 10 is connected to the central shaft 23.

[0084] In this embodiment, to ensure the stability of the feeding mechanism 3, a bracket 8 is provided for its support and stabilization. To prevent excessive vibration during the operation of the motor 10, a stabilizing seat 9 is provided to stabilize the motor 10.

[0085] In practice, the feeding mechanism 3 injects the brine to be treated into the buffer tank 2, and the water inlet mechanism 5 injects the brine into the buffer tank 2. The two are mixed and stirred to dilute the brine. After treatment, the brine will be in a high-quality, non-sedimenting state. It will then be recovered through the recovery pipe 4 and injected into the main well 7 by the mixing injection pump 6 for subsequent use or treatment. In addition to the main well 7, this invention also includes a backup well. The backup well is connected to the mixing injection pump via a secondary pipe, and a backup valve is installed at the connection point. This backup well has the same function as the main well 7 and is only used when the main well 7 malfunctions.

[0086] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for reusing a mixture of salt mud and brine for well injection, characterized in that: include: The base (1), buffer tank (2), feeding mechanism (3), recovery pipe (4), water inlet mechanism (5), mixed liquid injection pump (6), and main well (7); The base (1) is equipped with the buffer tank (2), and the feeding mechanism (3) is provided on one side of the buffer tank (2). The feeding mechanism (3) is connected to the inside of the buffer tank (2). The buffer tank (2) is provided with the water inlet mechanism (5) on its upper part, and the water inlet mechanism (5) is connected to the interior of the buffer tank (2); The buffer tank (2) is provided with a recovery pipe (4) at the bottom. One end of the recovery pipe (4) is connected to the inside of the buffer tank (2), and the other end is connected to the mixed liquid injection pump (6). The main well (7) is connected to the end of the mixed liquid injection pump (6) away from the recovery pipe (4) via a connecting pipe.

2. The reuse device for injecting a mixture of salt mud and brine into a well according to claim 1, characterized in that: The buffer tank (2) includes: a tank body (21) and a partition plate (22); The partition plate (22) divides the tank (21) into upper and lower chambers, with the upper chamber being a water storage chamber and the lower chamber being a mixing chamber.

3. The reuse device for injecting a mixture of salt mud and brine according to claim 2, characterized in that: The feeding mechanism (3) includes: a feeding pipe (31), a spiral shaft (32), a first injection pipe (33), a rotating shaft (34), a driving component (35), and a salt mud injection pump; The feed pipe (31) is rotatably equipped with the spiral shaft (32), one end of the spiral shaft (32) rotatably passes through the feed pipe (31) and extends to its outside and is connected to the rotating shaft (34), and the end of the rotating shaft (34) away from the spiral shaft (32) is connected to the driving member (35); The end of the feed pipe (31) away from the rotating shaft (34) is connected to the mixing chamber, and the first injection pipe (33) is connected to the peripheral wall of the end of the feed pipe (31) close to the rotating shaft (34); The end of the first injection pipe (33) away from the feed pipe (31) is connected to an external salt mud supply tank, and the salt mud injection pump is installed inside the first injection pipe (33).

4. The reuse device for injecting a mixture of salt mud and brine according to claim 2, characterized in that: The water inlet mechanism (5) includes: a ring pipe (51), a branch pipe (52), a second injection pipe (53), and a saline injection pump; Among them, three sets of branch pipes (52) are arranged on the inner circumference of the ring pipe (51). One end of each set of branch pipes (52) is connected to the ring pipe (51), and the other end is connected to the water storage chamber. The second injection pipe (53) is provided on the outside of the ring pipe (51). One end of the second injection pipe (53) is connected to the ring pipe (51), and the other end is connected to the external brine supply tank. The brine injection pump is installed inside the second injection pipe (53).

5. The reuse device for injecting a mixture of salt mud and brine according to claim 4, characterized in that: The buffer tank (2) also includes: a central shaft (23), a rotating plate (24), stirring blades (28), and a wall scraping assembly (29); The buffer tank (2) is provided with a central shaft (23) rotating inside. One end of the central shaft (23) passes through the top of the buffer tank (2), and the other end passes through the partition plate (22). The central shaft (23) is located on the outer wall of the water storage chamber and six sets of rotating plates (24) are arranged around its circumference. The central shaft (23) is located on the outer wall of the mixing chamber and the stirring blades (28) are arranged on its outer wall. The bottom end of the central shaft (23) is provided with a telescopic part (231). The bottom of the buffer tank (2) is provided with the wall scraping assembly (29).

6. The reuse device for injecting a mixture of salt mud and brine according to claim 5, characterized in that: The top and bottom of each set of rotating plates (24) slide against the top of the inside of the buffer tank (2) and the top of the partition plate (22).

7. The reuse device for injecting a mixture of salt mud and brine according to claim 5, characterized in that: The buffer tank (2) further includes: a dispensing area (25), a storage area (26), and a flow outlet (27); Among them, the six sets of rotating plates (24) divide the water storage chamber into six areas, three of which are staggered and arranged as the dispersing area (25), and the other three areas are staggered and arranged as the storage area (26). The partition plate (22) located in the dispersing area (25) has multiple sets of downflow holes (27) evenly distributed, and the three sets of storage areas (26) are respectively connected to the three sets of branch pipes (52).

8. The reuse device for injecting a mixture of salt mud and brine according to claim 5, characterized in that: The wall scraping assembly (29) includes: a chassis (291), a ring seat (292), a scraper (293), a cavity (294), and a clamping member (295); The chassis (291) is rotatably connected to the bottom of the buffer tank (2) at one end, and the ring seat (292) is provided on the other end. Multiple sets of scrapers (293) are arranged around the end of the ring seat (292) away from the chassis (291). The chassis (291) has a cavity (294) at its center, and the clamping member (295) is provided inside the cavity (294).

9. A reuse device for injecting a mixture of salt mud and brine into a well according to claim 8, characterized in that: The scraper (293) is arc-shaped, and the outer wall of the scraper (293) is in close contact with the inner wall of the tank (21). The scraper (293) has scraping tips (2931) on both sides.

10. A reuse device for injecting a mixture of salt mud and brine according to claim 5, characterized in that: The base (1) is provided with a support (8) for a stable feeding mechanism (3), and a stabilizing seat (9) is provided on the base (1). A motor (10) is installed at the end of the stabilizing seat (9) away from the base (1), and the output end of the motor (10) is connected to the central shaft (23).

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