A surface wastewater circulation device for oil wells

Abstract

This invention provides an oil well surface wastewater circulation device, including a wastewater transfer tank and a bottom frame mounted on the transfer tank. The bottom frame is equipped with a tipping bucket and a sliding mechanism. The tipping bucket is slidably mounted on the bottom frame via the sliding mechanism, allowing it to shift laterally along the bottom frame. A drive mechanism is also included to adjust the lateral position of the tipping bucket on the sliding mechanism. This invention allows the tipping bucket to slide outwards along the bottom frame to a suitable position via the sliding mechanism. The tipping bucket then flips to a suitable angle, enabling the quick and convenient dumping of settled mud particles into a nearby cleaning vehicle. This eliminates the need for the operator to repeatedly move the vehicle closer to the tipping bucket, significantly improving the efficiency of mud particle dumping and making operation more convenient and efficient.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage recycling equipment, specifically to a surface sewage recycling equipment for oil wells. Background Technology

[0002] In well workover operations, water serves as the core working medium, carrying rock cuttings through a circulation system for separation and treatment. The wastewater transfer tank and tipping bucket unloading structure are key components of the surface wastewater circulation system, used for temporary storage of wastewater and transfer of settled wastewater particles to a cleaning truck, achieving wastewater recycling and centralized solid waste disposal. Currently, this circulation equipment is used to separate and settle well workover wastewater. Wastewater enters the tipping bucket at the front of the circulation equipment through pipes, where the tipping bucket dumps the settled mud particles into the adjacent cleaning truck.

[0003] However, traditional tipping buckets can only be tilted and cannot be moved. This means that the driver of the cleaning vehicle has to be close to the tipping bucket of the sewage recycling equipment every time, which poses a high safety hazard and requires a high level of driving skills from the driver. The vehicle often needs to be moved back and forth multiple times to reach the appropriate dumping position, which is cumbersome and reduces the dumping efficiency of mud particles. Utility Model Content

[0004] In view of this, the present invention provides an oil well surface sewage circulation device that can conveniently and quickly adjust the position of the tipping bucket through a sliding mechanism. It eliminates the need for operators to frequently move the vehicle to be close to the tipping bucket, thus achieving convenient and efficient dumping operations. This solves the problem that traditional tipping buckets can only be tilted and cannot be moved, which means that the driver's position must be close to the tipping bucket of the sewage circulation device every time, posing a high safety hazard and requiring high driving skills from the driver. It also requires the driver to move the vehicle back and forth multiple times to reach the appropriate dumping position, making the operation cumbersome and reducing the dumping efficiency of mud particles.

[0005] To solve the above-mentioned technical problems, this utility model provides an oil well surface wastewater circulation device, including a wastewater transfer tank and a bottom frame set on the wastewater transfer tank. The bottom frame is equipped with a tipping bucket and a sliding mechanism. The tipping bucket is slidably set on the bottom frame through the sliding mechanism, so that the tipping bucket can be offset laterally along the bottom frame. A drive mechanism is used to adjust the lateral position of the tipping bucket on the sliding mechanism. This utility model can use the sliding mechanism to slide the tipping bucket outward along the bottom frame to a suitable position, and cooperate with the tipping mechanism to drive the tipping bucket to flip to a suitable angle to quickly and conveniently dump the mud particles in the tipping bucket into the cleaning vehicle next to it. There is no need for the operator to repeatedly move the vehicle closer to the tipping bucket, which greatly improves the dumping efficiency of mud particles and makes the operation more convenient and efficient.

[0006] The sliding mechanism includes guide rails on both sides of the upper part of the bottom frame. Each guide rail has a mounting seat on its outer side, and each mounting seat has a rotatable roller. The rollers roll on the guide rails on the same side as the rollers. A support frame is provided on the upper part of the mounting seat. This invention can move the support frame and the bucket above it along the axis of the guide rails by the rolling action of the rollers on the guide rails. This achieves easy movement of the bucket and provides sliding support, greatly improving the stability of the bucket sliding operation.

[0007] It also includes a tilting mechanism for tilting the bottom frame over the sewage transfer tank and / or tilting the bucket over the sliding mechanism. The tilting mechanism includes a first hydraulic cylinder hinged to the sewage transfer tank. The output rod end of the first hydraulic cylinder is hinged to the lower part of the bottom frame, and the other end of the bottom frame is hinged to the sewage transfer tank. This invention can push the bottom frame to tilt along the hinged part with the sewage transfer tank by extending the output rod of the first hydraulic cylinder, thus realizing convenient and quick adjustment of the tilt angle of the bucket.

[0008] The tipping bucket is hinged to the support frame via a rotating shaft. The tipping mechanism also includes a gear disk located on the outside of the rotating shaft. This invention can perform tipping operations by rotating the gear disk, which can drive the rotating shaft and the tipping bucket to perform tipping operations, further increasing the tilt angle of the tipping bucket.

[0009] The tipping bucket is hinged to the support frame via a pivot. The tipping mechanism also includes a second hydraulic cylinder hinged to the support frame. The output rod end of the second hydraulic cylinder is hinged to the tipping bucket. The lines connecting the axis of the hinge between the second hydraulic cylinder and the support frame, the axis of the hinge between the output rod of the second hydraulic cylinder and the tipping bucket, and the axis of the hinge between the tipping bucket and the support frame form a triangular structure. This invention can adjust the tilt angle of the tipping bucket by extending the output rod of the second hydraulic cylinder to push the tipping bucket to rotate along the pivot.

[0010] A vertical plate is provided at the end of the bottom frame, and a guide hole is provided on the vertical plate. A support plate is provided on the lower part of the support frame and on the vertical surface located at the geometric center of the vertical plate. A threaded hole adapted to the guide hole is provided on the support plate. The diameter of the guide hole is larger than the maximum outer diameter of the threaded hole. The driving mechanism includes a screw threadedly connected in the threaded hole and passing through the guide hole. This utility model can rotate the screw, and with the connection between the screw and the threaded hole on the support plate, as well as the guiding and limiting effect of the guide rail on the guide wheel, the rotating screw can drive the support plate, along with the support frame and the tipping bucket above it, to slide along the axis of the screw, realizing convenient and fast movement of the tipping bucket.

[0011] A third hydraulic cylinder is provided at the other end of the support frame. A connecting block is provided at the end of the output rod of the third hydraulic cylinder. The protruding part of the rotating shaft is rotatably connected to the connecting block. For example, a copper sleeve can be provided at the protruding part of the rotating shaft. The copper sleeve includes a fixed part and a rotating part. The rotating part of the copper sleeve is connected to the rotating shaft, and the fixed part is connected to the connecting block. The third hydraulic cylinder can adjust the height of the tipping bucket. This utility model can realize the vertical lifting operation of the tipping bucket by extending the output rods of multiple third hydraulic cylinders simultaneously, making the operation more convenient.

[0012] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0013] 1. Improved dumping efficiency: This utility model can drive the sliding mechanism through the drive mechanism, and the tipping bucket can be shifted laterally along the bottom frame. The cleaning vehicle can accurately dock without repeated movement, which greatly shortens the alignment time. Combined with the tipping mechanism, it can achieve rapid dumping and greatly improve the work efficiency.

[0014] 2. Enhanced operational stability: The rollers in this invention fit snugly against the guide rail, and combined with the bidirectional limiting effect of the guide rail, effectively prevent jamming and tipping during sliding, significantly improving sliding stability; the flipping mechanism uses a combination of hydraulic cylinder and gear transmission, ensuring a smooth flipping process without impact or shaking.

[0015] 3. Reduced mud residue: The flipping mechanism in this invention can achieve double flipping of the bottom frame and the bucket, greatly increasing the tilt angle of the bucket. Combined with the smooth stainless steel inner wall, the amount of mud residue is greatly reduced, eliminating the need for manual cleaning and reducing labor intensity.

[0016] 4. Improved versatility: This utility model can adjust the tipping height by simultaneously extending and retracting the output rod of the second hydraulic cylinder and the third hydraulic cylinder, adapting to cleaning vehicles of different height specifications; the lateral sliding function can adapt to transport vehicles of different widths, making it more widely applicable and eliminating the need to adjust the equipment for specific vehicle models. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the oil well surface wastewater circulation equipment of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of another embodiment of the oil well surface wastewater circulation device of this utility model; Figure 4 This utility model Figure 3 Enlarged view of section B in the middle.

[0018] Explanation of reference numerals in the attached drawings: 100, sewage transfer tank; 200, bottom frame; 300, tipping bucket; 400, sliding mechanism; 410, guide rail; 420, mounting base; 430, roller; 440, support frame; 500, drive mechanism; 510, screw; 520, handwheel; 600, tilting mechanism; 610, first hydraulic cylinder; 620, gear disk; 621, servo motor; 622, drive gear; 630, second hydraulic cylinder; 631, third hydraulic cylinder; 632, connecting block; 700, rotating shaft; 800, vertical plate; 900, support plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0020] like Figure 1-4 As shown: This embodiment provides an oil well surface wastewater circulation device, including a wastewater transfer tank 100 and a bottom frame 200 installed on the wastewater transfer tank 100. The bottom frame 200 is equipped with a tipping bucket 300, the inner wall of which is polished. The wastewater transfer tank 100 is used for temporary storage of mud to be treated, and its inner wall is coated with an epoxy resin coating, providing corrosion resistance and leak-proof functions. The bottom frame 200 is a steel welded frame structure with high overall strength and load-bearing capacity, and is hinged to the upper edge of the wastewater transfer tank 100. The tipping bucket 300 is made of stainless steel by stamping, with a smooth and inclined inner wall to reduce mud residue. It is slidably assembled on the bottom frame 200 via a sliding mechanism 400. The tipping bucket 300 is hinged to a support frame 440 via a pivot 700, the pivot 700 being made of alloy structural steel with a length adapted to the width of the tipping bucket 300. It also includes a sliding mechanism 400, through which the tipping bucket 300 is slidably mounted on the bottom frame 200, allowing the tipping bucket 300 to shift laterally along the bottom frame 200; and a drive mechanism 500, which is used to adjust the lateral position of the tipping bucket 300 on the sliding mechanism 400. This utility model can use the sliding mechanism 400 to slide the tipping bucket 300 outward along the bottom frame 200 to a suitable position, and cooperate with the overturning mechanism 600 to overturn the tipping bucket 300 to a suitable angle, so as to quickly and conveniently dump the mud particles in the tipping bucket 300 into the cleaning vehicle on the side, without the operator having to repeatedly move the vehicle closer to the tipping bucket 300, which greatly improves the dumping efficiency of mud particles and makes the operation more convenient and efficient.

[0021] According to one embodiment of the present invention, such as Figure 1-3 As shown, the sliding mechanism 400 includes guide rails 410 arranged on both sides of the upper part of the bottom frame 200. Each guide rail 410 has a mounting seat 420 on its outer side, and each mounting seat 420 has a rotatable roller 430. The roller 430 has a steel core wrapped with wear-resistant rubber, which fits tightly against the outer wall of the guide rail 410, ensuring smooth rolling and preventing tipping. A support frame 440 is welded to the upper part of the four mounting seats 420. The support frame 440 is a rectangular frame structure made of spliced ​​channel steel, used to support the tipping bucket 300 and achieve synchronous sliding. The rollers 430 roll on the guide rails 410 located on the same side as them. The support frame 440 is provided on the upper part of the mounting seats 420. Figure 1 and Figure 3 As shown, there are two guide rails 410, made of high-strength alloy steel with a chrome-plated surface for rust prevention and wear resistance. They are fixed parallel to each other on both sides of the upper part of the bottom frame 200. Each guide rail 410 has two mounting seats 420 at both ends, and two rollers 430 at both ends. The mounting seats 420 on the rollers 430 have a U-shaped structure, made of bent and welded steel plates, and internally mount the rollers 430 via hinge shafts. A support frame 440 is located on top of the four mounting frames. This invention allows the support frame 440 and the tipping bucket 300 above it to move along the axis of the guide rails 410 through the rolling action of the rollers 430. This enables easy movement of the tipping bucket 300 and provides sliding support, greatly improving the stability of the tipping bucket 300 during sliding operations.

[0022] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, it also includes a tilting mechanism 600, used to tilt the bottom frame 200 on the sewage transfer tank 100 and / or tilt the tipping bucket 300 on the sliding mechanism 400. The tilting mechanism 600 includes a first hydraulic cylinder 610 hinged to the sewage transfer tank 100. The output rod end of the first hydraulic cylinder 610 is hinged to the lower part of the bottom frame 200, and the other end of the bottom frame 200 is hinged to the sewage transfer tank 100. The first hydraulic cylinder 610 is an engineering hydraulic cylinder, hinged to the side wall of the sewage transfer tank 100, and its output rod end is hinged to the lower part of the bottom frame 200. The other end of the bottom frame 200 is hinged to the sewage transfer tank 100 by a pin. The extension and retraction of the hydraulic cylinder drives the bottom frame 200 to tilt as a whole. This invention allows for convenient and rapid adjustment of the tilt angle of the tipping bucket 300 by extending the output rod of the first hydraulic cylinder 610 to push the bottom frame 200 along the hinged part with the sewage transfer tank 100.

[0023] According to another embodiment of the present invention, such as Figure 2 As shown, the tipping bucket 300 is hinged to the support frame 440 via a rotating shaft 700. The tipping mechanism 600 also includes a gear disk 620 disposed outside the rotating shaft 700. This invention can perform tipping operations by rotating the gear disk 620 to drive the rotating shaft 700 and the tipping bucket 300, further increasing the tilt angle of the tipping bucket 300. The tipping mechanism can also drive the tipping bucket to rotate via a worm gear drive.

[0024] According to another embodiment of the present invention, such as Figure 3 and Figure 4 As shown, the tipping bucket 300 is hinged to the support frame 440 via a rotating shaft 700. The tipping mechanism 600 also includes a second hydraulic cylinder 630 hinged to the support frame 440. The output rod end of the second hydraulic cylinder 630 is hinged to the tipping bucket 300. The lines connecting the axis of the hinge between the second hydraulic cylinder 630 and the support frame 440, the axis of the hinge between the output rod of the second hydraulic cylinder 630 and the tipping bucket 300, and the axis of the hinge between the tipping bucket 300 and the support frame 440 form a triangular structure. Alternatively, the second hydraulic cylinder 630 can be hinged between the support frame 440 and the tipping bucket 300. The second hydraulic cylinder 630 is also an engineering-grade hydraulic cylinder. The lines connecting the axes of the three hinges form a triangular structure, utilizing the stability of the triangle to achieve smooth tipping of the tipping bucket 300. This invention can adjust the tilt angle of the tipping bucket 300 by extending the output rod of the second hydraulic cylinder 630 to push the tipping bucket 300 to rotate along the rotating shaft 700.

[0025] According to another embodiment of the present invention, such as Figure 1 and Figure 3As shown, a vertical plate 800 is provided at the end of the bottom frame 200, and a guide hole is provided on the vertical plate 800. A support plate 900 is provided on the lower part of the support frame 440 and on the vertical surface located at the geometric center of the vertical plate 800. A threaded hole adapted to the guide hole is provided on the support plate 900. The diameter of the guide hole is larger than the maximum outer diameter of the threaded hole. The drive mechanism 500 includes a screw 510 threadedly connected in the threaded hole. The screw 510 passes through the guide hole. A handwheel 520 is provided at the end of the screw 510. The vertical plate 800 is welded to the end of the bottom frame 200 and has a circular guide hole. The support plate 900 is welded to the lower part of the support frame 440 and on the vertical surface located at the geometric center of the vertical plate 800. A threaded hole coaxial with the guide hole is provided on the support plate 900. The diameter of the guide hole is larger than the maximum outer diameter of the threaded hole, providing clearance space for the movement of the screw 510. The screw 510 is made of steel that has undergone quenching and tempering, and its surface is machined with trapezoidal threads. The threaded connection is made in the threaded hole of the support plate 900 and passes through the guide hole of the vertical plate 800. In this invention, the screw 510 can be rotated by rotating the output shaft of the handwheel 520. Combined with the connection between the screw 510 and the threaded hole on the support plate 900, and the guiding and limiting function of the guide rail 410 on the guide wheel, the rotating screw 510 can drive the support plate 900, along with the support frame 440 and the tipping bucket 300 above it, to slide along the axis of the screw 510, thus realizing convenient and rapid movement of the tipping bucket 300.

[0026] According to another embodiment of the present invention, such as Figure 3 and Figure 4 As shown, a third hydraulic cylinder 631 is provided at the other end of the support frame 440. A connecting block 632 is provided at the end of the output rod of the third hydraulic cylinder 631. The protruding part of the rotating shaft 700 is rotatably connected to the connecting block 632. For example, a copper sleeve can be provided at the protruding part of the rotating shaft 700. The copper sleeve includes a fixed part and a rotating part. The rotating part of the copper sleeve is connected to the rotating shaft 700, and the fixed part is connected to the connecting block 632. When the output rods of the second hydraulic cylinder 630 and the third hydraulic cylinder 631 extend synchronously, the height of the tipping bucket 300 can be adjusted. To achieve synchronized extension and retraction of the second hydraulic cylinder 630 and the third hydraulic cylinder 631, a synchronization valve can be installed. Alternatively, two or more third hydraulic cylinders 631 can be used, resulting in more stable support for the tipping bucket 300. The synchronization valve is installed between the main oil circuit of the hydraulic system and the oil inlets of the second and third hydraulic cylinders 630 and 631, ensuring even distribution of hydraulic oil to the two cylinders. This guarantees initial synchronization of extension and retraction, ensuring the tipping bucket 300 remains level during height adjustment and preventing tilting that could lead to mud spillage or uneven stress on the equipment. This invention allows for vertical lifting of the tipping bucket 300 by simultaneously extending the output rods of the second and third hydraulic cylinders 630 and 631, making operation more convenient.

[0027] Working principle and usage of this utility model: First, it needs to be clarified that the wastewater recycling equipment involved in this utility model is mainly used for the separation and sedimentation of sludge introduced into the wastewater transfer tank 100 during well repair operations, and then automatically dumping particulate impurities from the tipping bucket 300 into a cleaning vehicle. Since the core improvement of this application lies in how to perform efficient and convenient impurity dumping, rather than improving how to achieve sludge separation, existing separation equipment can be used for sludge separation. Therefore, the separation process will not be elaborated upon here. Only the convenient and rapid dumping of materials from the tipping bucket 300 will be described in detail. This utility model uses the mobile dumping operation of the tipping bucket 300 as an example to explain its working principle and usage method in detail. The working principle is as follows: This equipment is powered by a drive mechanism 500, which drives a sliding mechanism 400 to adjust the lateral position of the tipping bucket 300. The hydraulic cylinders of the tipping mechanism 600, in coordination with the servo motor 621, enable multi-angle tilting of the bottom frame 200 and the tipping bucket 300. The vertical height of the tipping bucket 300 is adjusted by the synchronous extension and retraction of the second and third hydraulic cylinders 630 and 631. The coordinated actions of these mechanisms allow the tipping bucket 300 to precisely dock with the cleaning vehicle, achieving rapid and thorough dumping of the mud.

[0028] The usage method is as follows: Sludge storage: The wastewater to be treated is transported through pipelines to the wastewater transfer tank 100. The tipping bucket 300 is in the initial position to receive the sludge flowing out of the transfer tank until the rated volume is reached.

[0029] Vehicle alignment: The cleaning vehicle is parked next to the equipment. According to the position of the vehicle's receiving port, the handwheel 520 is started to drive the screw 510 to rotate. Through the threaded transmission, the support plate 900, support frame 440 and tipping bucket 300 are driven to slide laterally along the guide rail 410 until the tipping bucket 300 is aligned with the receiving port of the cleaning vehicle.

[0030] Height adjustment: Based on the height of the receiving port of the cleaning vehicle, start the third hydraulic cylinder 631 to extend and retract its output rod, which simultaneously drives the second hydraulic cylinder 630 to adjust the vertical height of the tipping bucket 300, ensuring that the height of the tipping bucket 300's discharge port matches the height of the receiving port.

[0031] Tilting and tipping: First, start the first hydraulic cylinder 610, its output rod extends, and pushes the bottom frame 200 to tilt around the hinge point, adjusting to the initial tilt angle; then start the servo motor 621 or the second hydraulic cylinder 630 to drive the tipping bucket 300 to tilt further, so that the mud particles in the tipping bucket 300 are quickly tipped into the cleaning vehicle under the action of gravity.

[0032] Reset operation: After the tipping is completed, start each mechanism in reverse so that the tipping bucket 300 and support frame 440 return to their initial positions and wait for the next operation cycle; if there are a small amount of residue in the tipping bucket 300, the tipping bucket 300 angle can be repeatedly fine-tuned to achieve thorough cleaning.

[0033] This invention enables convenient and rapid adjustment of the position of the tipping bucket 300 via the sliding mechanism 400. It eliminates the need for operators to frequently move the vehicle closer to the tipping bucket 300, allowing for convenient and efficient dumping. This solves the problem of traditional tipping buckets 300, which can only be tilted and cannot be moved. This necessitates the driver being positioned close to the tipping bucket 300 of the sewage recycling equipment, posing a significant safety hazard and requiring highly skilled drivers who frequently need to move the vehicle multiple times to reach the appropriate dumping position. This cumbersome operation also reduces the efficiency of dumping mud particles.

[0034] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A surface wastewater circulation device for oil wells, comprising a wastewater transfer tank (100) and a bottom frame (200) disposed on the wastewater transfer tank (100), wherein the bottom frame (200) is provided with a tipping bucket (300), characterized in that, Also includes: The sliding mechanism (400) allows the tipping bucket (300) to be slidably mounted on the bottom frame (200) so that the tipping bucket (300) can be laterally offset along the bottom frame (200); the driving mechanism (500) is used to adjust the lateral position of the tipping bucket (300) on the sliding mechanism (400).

2. The oil well surface wastewater circulation equipment as described in claim 1, characterized in that: The sliding mechanism (400) includes guide rails (410) arranged on both sides of the upper part of the bottom frame (200). Each guide rail (410) has a mounting seat (420) on its outer side. Each mounting seat (420) has a roller (430) rotatably arranged on it. The roller (430) is rolled on the guide rail (410) located on the same side as it. A support frame (440) is arranged on the upper part of the mounting seat (420).

3. The oil well surface wastewater circulation equipment as described in claim 2, characterized in that: The sewage transfer tank (100) is also provided with a flipping mechanism (600) for driving the bottom frame (200) to flip on the sewage transfer tank (100) and / or driving the tipping bucket (300) to flip on the sliding mechanism (400). The flipping mechanism (600) includes a first hydraulic cylinder (610) hinged on the sewage transfer tank (100). The output rod end of the first hydraulic cylinder (610) is hinged on the lower part of the bottom frame (200), and the other end of the bottom frame (200) is hinged on the sewage transfer tank (100).

4. The oil well surface wastewater circulation equipment as described in claim 3, characterized in that: The tipping bucket (300) is hinged to the support frame (440) via a pivot (700), and the tipping mechanism (600) also includes a gear disk (620) disposed on the outside of the pivot (700).

5. The oil well surface wastewater circulation equipment as described in claim 3, characterized in that: The tipping bucket (300) is hinged to the support frame (440) via a pivot (700). The tipping mechanism (600) also includes a second hydraulic cylinder (630) hinged to the support frame (440). The output rod end of the second hydraulic cylinder (630) is hinged to the tipping bucket (300). The lines connecting the axis of the hinge between the second hydraulic cylinder (630) and the support frame (440), the axis of the hinge between the output rod of the second hydraulic cylinder (630) and the tipping bucket (300), and the axis of the hinge between the tipping bucket (300) and the support frame (440) form a triangular structure.

6. The oil well surface wastewater circulation equipment as described in claim 5, characterized in that: The bottom frame (200) is provided with a vertical plate (800) at its end. The vertical plate (800) has a guide hole. The support frame (440) is provided with a support plate (900) on its lower part and on the vertical surface located at the geometric center of the vertical plate (800). The support plate (900) has a threaded hole that matches the guide hole. The drive mechanism (500) includes a screw (510) threadedly connected in the threaded hole. The screw (510) passes through the guide hole.

7. The oil well surface wastewater circulation equipment as described in claim 6, characterized in that: The other end of the support frame (440) is provided with a third hydraulic cylinder (631). The output rod end of the third hydraulic cylinder (631) is provided with a connecting block (632). The protruding part of the rotating shaft (700) is rotatably connected to the connecting block (632). The third hydraulic cylinder (631) can adjust the height of the tipping bucket (300).

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