Screw conveyor automatic pushing device and drill cutting conveying device

Abstract

The present application provides a spiral conveyor automatic pushing device and a drill cutting conveying device, the drill cutting conveying device comprises a plurality of centrifuges arranged above the tank surface of a mud tank; a spiral conveyor arranged on the tank surface of the mud tank, the spiral conveyor is provided with a spiral conveyor automatic pushing device, the spiral conveyor automatic pushing device comprises a plurality of guide rails arranged on the tank surface of the mud tank, both ends of the guide rails correspond to the working position and the disassembly and assembly position of the spiral conveyor respectively; and a plurality of automatic lifting and walking devices arranged on both sides of the spiral conveyor, the automatic lifting and walking devices are configured to be capable of extending downwards and connected to the guide rails, and continue to extend to lift the spiral conveyor and separate from the tank surface of the mud tank; wherein the automatic lifting and walking devices walk on the guide rails when the spiral conveyor moves; the spiral conveyor is in the working position when working, and the spiral conveyor is in the disassembly and assembly position when disassembling or maintaining.

Description

Technical Field

[0001] This invention relates to an automatic pushing device for a screw conveyor and a cuttings conveying device including the same, belonging to the field of oil drilling technology. Background Technology

[0002] Oil drilling generates a large amount of waste. The traditional method involves burying the waste drill cuttings and other solid phases on-site. Specifically, before drilling, land needs to be acquired to dig a 2000-5000 cubic meter mud pit at the well site, lined with a plastic impermeable membrane, and used to store waste drilling fluid, cement slurry displaced during cementing, and drill cuttings separated by solids control equipment during drilling. This traditional method of waste drilling fluid and cuttings disposal has the following drawbacks: digging pits at the well site as storage pools for waste mud and cuttings poses a risk of surface water pollution. For example, during construction, if heavy rain or other water sources converge at the well site, waste drilling fluid may leak into nearby farmland, water bodies, and topsoil, damaging the ecological environment near the well site. Currently, most areas in China have banned on-site burial and discharge methods, requiring thorough cleaning after well completion, which is time-consuming and costly. Digging large mud pits on-site is labor-intensive, inefficient, and requires land acquisition and managing relationships with farmers and workers.

[0003] With the introduction and implementation of relevant environmental protection laws and regulations, the environmental protection requirements for oil drilling operations are becoming increasingly stringent, as are the requirements for drilling fluid solid phase control and environmental treatment. These requirements mandate that drilling fluid and waste drill cuttings be kept off the ground throughout the entire drilling process, eliminating the need for excavating mud pits that pose a high risk of environmental pollution. Instead, solid phases such as drill cuttings separated by on-site solids control equipment, mud-free equipment, and drill cuttings processing equipment must be collected and transported to designated equipment or directly to drill cuttings transport vehicles for delivery to designated environmental treatment stations for harmless treatment and resource utilization. This effectively reduces the environmental pollution caused by waste generated during drilling, achieving green and clean production.

[0004] Given the advantages of screw conveyors, such as simple structure, low manufacturing cost, strong sealing, long conveying distance, and safe and convenient operation, and the ability to load and unload at multiple points, screw conveyors are widely used in current oil drilling processes and subsequent waste solids treatment to collect and transport drill cuttings and other solids. Drill cuttings and other solids separated from solids control equipment, mud-free systems, and drill cuttings processing equipment at the drilling site are characterized by high viscosity, strong abrasiveness, high mud adhesion, easy caking, and non-flowing properties. Therefore, sand discharge troughs or diversion troughs are generally not used to guide drill cuttings and other solids into the screw conveyor. Instead, the screw conveyor is placed directly below the sand discharge port of solid-liquid separation equipment such as centrifuges to prevent drill cuttings accumulation, blockage, and poor sand discharge. A long screw conveyor is placed on the surface of the mud tank, and several centrifuges are arranged above the screw conveyor. During drilling, the solid-liquid mixture returning from the wellbore passes through several centrifuges for solid-liquid separation. The solid phase mixture containing drill cuttings discharged from each centrifuge falls vertically into the screw conveyor through the slag discharge port of each centrifuge, eliminating the need for a sand discharge trough and avoiding solid phase accumulation and blockage at the centrifuge slag discharge ports. However, because the centrifuges are directly located above the screw conveyor, maintenance and replacement of the screw conveyor require a large crane to lift and move the centrifuges over a long distance. Before lifting, the power cords and control devices, mud pumps and their pipelines, liquid phase overflow devices and their connecting pipelines after centrifugation, slag discharge ports, valves, and other accessories of each centrifuge must be completely disassembled. After maintenance and replacement of the screw conveyor, everything must be reinstalled. This process is labor-intensive, time-consuming, and inefficient, leading to increased drilling costs. Furthermore, the long-distance lifting with a large crane poses significant safety risks and high lifting costs. Summary of the Invention

[0005] To address the aforementioned technical problems in the existing technology, this invention proposes an automatic screw conveyor moving device and a drill cuttings conveying device. When the screw conveyor needs maintenance and replacement on site, the long screw conveyor can be automatically moved from under multiple centrifuges to a designated position without disassembling multiple centrifuges and their accessories, and without the need for long-distance hoisting operations by large cranes.

[0006] One aspect of the present invention provides an automatic conveying device for a screw conveyor, comprising:

[0007] Several guide rails are installed on the surface of the mud tank, with each end of the guide rail corresponding to the working position and disassembly position of the screw conveyor, respectively; and

[0008] Several automatic lifting and traveling devices are installed on both sides of the screw conveyor. The automatic lifting and traveling devices are configured to extend downward and connect to the guide rail, and continue to extend to lift the screw conveyor and detach it from the surface of the mud tank.

[0009] When the screw conveyor moves, the automatic lifting and traveling device travels on the guide rail; when working, the screw conveyor is in the working position, and when disassembling or maintaining, the screw conveyor is in the disassembly / reassembly position.

[0010] A further improvement of the present invention is that an automatic push-pull device is provided on the side of the screw conveyor, and the automatic push-pull device drives the screw conveyor to move on the guide rail.

[0011] A further improvement of the present invention is that there are two guide rails, which are respectively arranged at both ends of the screw conveyor; the automatic lifting and traveling device is divided into two groups, which are respectively arranged corresponding to the two guide rails; each group includes two active lifting and traveling devices, which are respectively arranged on both sides of the screw conveyor.

[0012] A further improvement of the present invention is that the number of automatic push-pull devices is two, respectively located at both ends of the screw conveyor.

[0013] A further improvement of the present invention is that the automatic push-pull device includes a support fixed to the surface of the mud tank, a first telescopic component is provided on the support, the first telescopic component is detachably connected to a connecting rod, and the end of the connecting rod is fixed to the side of the screw conveyor.

[0014] A further improvement of the present invention is that the first telescopic component includes a horizontal electric push rod assembly, the end of which is provided with a telescopic horizontal push rod, and the end of the horizontal push rod is connected to the connecting rod via a first connecting pin.

[0015] A further improvement of the present invention is that the automatic lifting and walking device includes a mounting base fixed to the side of the screw conveyor, a second telescopic component is provided on the mounting base, and a roller mechanism is provided at the end of the second telescopic component.

[0016] A further improvement of the present invention is that the second telescopic component includes a vertical electric actuator assembly, the end of which is provided with a telescopic vertical actuator, and the end of the vertical actuator is connected to the roller mechanism via a second connecting pin.

[0017] A further improvement of the present invention is that the roller mechanism includes a roller bracket connected to the second telescopic component, and the roller bracket is provided with a rotatable roller;

[0018] The guide rail is provided with a V-shaped groove that matches the roller, and the roller can roll within the V-shaped groove.

[0019] A further improvement of the present invention is that an automatic control device is provided on the surface of the mud tank, the automatic control device controlling the automatic lifting and walking device and the automatic pushing and pulling device, so that the screw conveyor moves automatically.

[0020] A further improvement of the present invention is that the automatic lifting and walking device and the automatic pushing and pulling device are also remotely controlled by a remote control device.

[0021] Another aspect of the invention provides a drill cuttings conveying device, comprising:

[0022] Several centrifuges are installed above the surface of the mud tank;

[0023] A screw conveyor installed on the surface of a mud tank, wherein the screw conveyor is equipped with an automatic screw conveyor pushing device;

[0024] The screw conveyor is located below the centrifuge when in the working position, and is moved away from below the centrifuge when in the disassembly position.

[0025] Compared with the prior art, the advantages of the present invention are as follows:

[0026] The present invention discloses an automatic screw conveyor moving device and a drill cuttings conveying device. When the screw conveyor needs maintenance and replacement on site, it can automatically move the long screw conveyor from under multiple centrifuges to a designated position without disassembling multiple centrifuges and their accessories, and without the need for long-distance hoisting operations by large cranes.

[0027] The drill cuttings conveying device described in this invention allows the solid mixture discharged from the centrifuge to fall vertically into the conveyor below the centrifuge, resulting in smoother sand discharge and eliminating the need for a sand discharge trough. When the screw conveyor needs to be disassembled and replaced, there is no need to disassemble and move multiple centrifuges or perform large-scale hoisting operations to move each centrifuge before maintenance, repair, or replacement of the screw conveyor, saving time and effort.

[0028] This invention relates to an automatic screw conveyor moving device with a high degree of automation. It can be operated with a single button via an automatic control device or remote controller to move the screw conveyor in or out of the centrifuge, significantly reducing the labor intensity of workers. Furthermore, the device has a simple structure, is quick to install, easy to use, highly reliable, low in manufacturing cost, and low in energy consumption. Utilizing a pure electric power source, it features fast response, sensitive control, good synchronization, no lag, and no pollution, making it more environmentally friendly, efficient, and clean. It can be widely applied to other situations requiring the moving of mechanical equipment or components, with a broad range of applicability and application areas. Attached Figure Description

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, in which:

[0030] Figure 1 The diagram shown is a top view of an automatic conveyor pushing device for a screw conveyor according to an embodiment of the present invention.

[0031] Figure 2 The diagram shown is a structural schematic of an automatic screw conveyor pushing device according to an embodiment of the present invention, showing the side view of the screw conveyor when it is in the working position;

[0032] Figure 3 The diagram shown is a structural schematic of an automatic screw conveyor pushing device according to an embodiment of the present invention, showing the side view of the screw conveyor when it is in the disassembly position;

[0033] Figure 4 The diagram shown is a structural schematic of an automatic push-pull device according to an embodiment of the present invention;

[0034] Figure 5 The diagram shown is a structural schematic of an automatic lifting and walking device according to an embodiment of the present invention;

[0035] Figure 6 The diagram shown is a structural schematic of the roller mechanism and guide rail according to an embodiment of the present invention.

[0036] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not drawn to scale.

[0037] The meanings of the reference numerals in the attached drawings are as follows: 1. Mud tank surface; 2. Automatic push-pull device; 3. Automatic lifting and walking device; 4. Screw conveyor; 5. Centrifuge; 11. Guide rail; 12. Automatic control device; 13. Remote control device; 111. First guide rail; 112. Second guide rail; 113. V-groove; 21. First automatic push-pull device; 22. Second automatic push-pull device; 23. Support; 24. First telescopic assembly; 25. Connecting rod; 241. Horizontal electric push rod assembly; 242. Horizontal push rod. 243. First connecting pin; 31. First automatic lifting and traveling device; 32. Second automatic lifting and traveling device; 33. Third automatic lifting and traveling device; 34. Fourth automatic lifting and traveling device; 35. Mounting base; 36. Second telescopic assembly; 37. Roller mechanism; 38. Second connecting pin; 361. Vertical electric push rod assembly; 362. Vertical push rod; 371. Ball bearing bracket; 372. Roller; 41. Drill cuttings; 51. First centrifuge; 52. Second centrifuge; 53. Third centrifuge. Detailed Implementation

[0038] To make the technical solutions and advantages of the present invention clearer, exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0039] Figure 1 The diagram schematically illustrates an automatic screw conveyor moving device according to an embodiment of the present invention, comprising a plurality of guide rails 11 disposed on the surface 1 of a mud tank, the guide rails 11 being arranged perpendicular to the direction of the screw conveyor 4. The two ends of the guide rails 11 correspond to the working position and the disassembly / removal position of the screw conveyor 4, respectively. When the screw conveyor 4 is in the working position, it is positioned below the centrifuge 5, receiving drill cuttings output by the centrifuge 5. During disassembly / removal or maintenance, the screw conveyor 4 is positioned in the disassembly / removal position, moved away from the centrifuge 5, to prevent the centrifuge 5 from obstructing the disassembly / removal work.

[0040] Several automatic lifting and traveling devices 3 are provided on both sides of the screw conveyor 4. The automatic lifting and traveling devices 3 are configured to extend downward and connect to the guide rail 11, and continue to extend to lift the screw conveyor 4 and detach it from the surface of the mud tank 1. When connected to the guide rail 11, the automatic lifting and traveling devices 3 can travel on the guide rail 11.

[0041] When using the device according to this embodiment, the automatic lifting and traveling device 3 travels on the guide rail 11 when the screw conveyor 4 moves (e.g., ...). Figure 2 (as shown); the screw conveyor 4 is in the working position during operation, and in the disassembly or maintenance position (as shown). Figure 3 (As shown).

[0042] When using the automatic screw conveyor moving device, if the screw conveyor 4 needs maintenance or replacement on site, the long screw conveyor 4 can be automatically moved from under multiple centrifuges 5 to a designated position without disassembling multiple centrifuges 5 and their accessories, and without the need for long-distance hoisting operations by large cranes.

[0043] In one embodiment, such as Figure 4 As shown, an automatic push-pull device 2 is provided on the side of the screw conveyor 4. The automatic push-pull device 2 is fixed on the surface of the mud tank 1 on one side and connected to the screw conveyor 4 on the other. The automatic push-pull device 2 can extend and retract, thereby driving the screw conveyor 4 to move on the guide rail 11.

[0044] When the automatic push-pull device 2 retracts, the screw conveyor 4 is in the working position; when the automatic push-pull device 2 extends, the screw conveyor 4 moves to the disassembly / removal position.

[0045] When the device according to this embodiment is in operation, the screw conveyor 4 is in the working position, receiving and conveying the drill cuttings output by the centrifuge 5. At this time, the automatic lifting and traveling device 3 is in a retracted state, and the automatic push-pull device 2 is in a retracted state.

[0046] When it is necessary to disassemble, replace or repair the screw conveyor 4, the automatic lifting and traveling device 3 extends downward and connects to the guide rail 11. As it continues to extend, the screw conveyor 4 is lifted. Then the automatic push-pull device 2 extends and pushes the screw conveyor 4 to move, so that the automatic lifting and traveling device 3 travels on the guide rail 11 and finally moves the screw conveyor 4 to the disassembly position.

[0047] After disassembly, replacement or repair is completed, the automatic push-pull device 2 retracts, driving the screw conveyor 4 back to the working position, and causing the automatic lifting and traveling device 3 to retract. The screw conveyor 4 descends onto the surface of the mud tank 1, and continues to retract, causing the automatic lifting and traveling device 3 to separate from the guide rail 11.

[0048] In one embodiment, there are two guide rails 11, which are respectively set at both ends of the screw conveyor 4; the automatic lifting and traveling device 3 is divided into two groups, with two in each group; the two groups are respectively set corresponding to the two guide rails 11; the two active lifting and traveling devices in each group are respectively set on both sides of the screw conveyor 4 and correspond to the same guide rail 11.

[0049] In one embodiment, such as Figure 1 As shown, there are two automatic push-pull devices 2. In order to keep the force pushing the screw conveyor 4 balanced, the two automatic push-pull devices 2 are respectively set at both ends of the screw conveyor 4 and located on both sides of the position of the automatic lifting and walking device 3 of the screw conveyor 4.

[0050] In the automatic conveyor pushing device according to this embodiment, the guide rail 11 includes a first guide rail 111 and a second guide rail 112. The automatic lifting and traveling device 3 includes a first automatic lifting and traveling device 31, a second automatic lifting and traveling device 32, a third automatic lifting and traveling device 33, and a fourth automatic lifting and traveling device 34; wherein the first automatic lifting and traveling device 31 and the second automatic lifting and traveling device 32 correspond to the first guide rail 111, and the third automatic lifting and traveling device 33 and the fourth automatic lifting and traveling device 34 correspond to the second guide rail 112. The automatic push-pull device 2 includes a first automatic push-pull device 21 and a second automatic push-pull device 22.

[0051] In one embodiment, such as Figure 4As shown, the automatic push-pull device 2 includes a support 23 fixed on the surface of the mud tank 1, and a first telescopic component 24 is provided on the support 23. The first telescopic component 24 is detachably connected to a connecting rod 25, and the end of the connecting rod 25 is fixed to the side of the screw conveyor 4.

[0052] The support 23 has a certain height, and a mounting device is fixed to the upper end of the base by bolts. The first telescopic component 24 is mounted on the mounting device. In this embodiment, the first telescopic component 24 is a telescopic mechanism, and its telescopic mechanism can be electric, hydraulic, pneumatic, or other telescopic mechanisms, as long as it can guarantee telescopic movement, it is within the scope of this invention.

[0053] In a preferred embodiment, the first telescopic component 24 includes a horizontal electric push rod assembly 241, the end of which is provided with a telescopic horizontal push rod 242. When the horizontal electric push rod assembly 241 is activated, it drives the horizontal push rod 242 to extend or retract. The end of the horizontal push rod 242 is connected to the connecting rod 25 through a first connecting pin 243.

[0054] In one embodiment, such as Figure 5 As shown, the automatic lifting and traveling device 3 includes a mounting base 35 fixed to the side of the screw conveyor 4. A second telescopic component 36 is provided on the mounting base 35. The second telescopic component 36 is vertically arranged, and a roller mechanism 37 is provided at its lower end. The roller mechanism 37 can be connected to the guide rail 11 and roll within the guide rail 11.

[0055] In this embodiment, the second telescopic component 36 is a telescopic mechanism, and its telescopic mechanism can be electric, hydraulic, pneumatic or other telescopic mechanisms, as long as it can guarantee telescopic movement, it is within the scope of this invention.

[0056] In a preferred embodiment, the second telescopic component 36 includes a vertical electric actuator assembly 361, the end of which is provided with a telescopic vertical actuator 362, the end of which is connected to the roller mechanism 37 via a second connecting pin 38.

[0057] When using the device according to this embodiment, when the screw conveyor 4 is in operation, the second telescopic components 36 of the automatic lifting and traveling device 3 on both sides are in a retracted state, and the roller mechanism 37 is separated from the guide rail 11. The screw conveyor 4 is placed on the surface of the mud tank 1, and due to the large friction, the screw conveyor 4 will not move.

[0058] When the screw conveyor 4 needs to be moved, the electric push rod of the second telescopic assembly 36, through the rotation of its internal motor, pushes the vertical electric push rod assembly 361 to extend the vertical push rod 362. The vertical push rod 362 drives the roller mechanism 37 to move downward until the roller mechanism 37 moves into the guide rail 11. The electric push rod continues to extend, and the screw conveyor 4 rises due to the support of the roller mechanism 37, disengaging from the mud tank surface 1. The screw conveyor 4 is connected to the mud tank surface 1 through the roller mechanism 37 and the guide rail 11. The automatic push-pull device 2 can push or pull the screw conveyor 4 to move by applying a small pushing force.

[0059] In one embodiment, such as Figure 6 As shown, the roller mechanism 37 includes a roller bracket 371 connected to the second telescopic component 36, and a rotatable roller 372 is provided on the roller bracket 371. The roller bracket 371 is connected to the vertical push rod 362 through the second connecting pin 38, and its bottom is an inverted U-shaped groove. The roller 372 is disposed in the groove and rotates in the groove through a rotating shaft.

[0060] The guide rail 11 is provided with a V-groove 113 that matches the roller 372, allowing the roller 372 to roll within the V-groove 113. The V-groove 113 is wider at the top and narrower at the bottom. The opening at the top makes it easier for the roller 372 to enter, eliminating the need for strict alignment and allowing for some tolerance. The narrowing at the bottom allows for a better fit with the roller 372.

[0061] In one embodiment, an automatic control device 12 is provided on the surface 1 of the mud tank. The automatic control device 12 controls the automatic lifting and traveling device 3 and the automatic push-pull device 2, causing the screw conveyor 4 to move automatically. Preferably, the automatic control device 12 inputs control commands via manual operation buttons or a touch screen. Its internal control module transmits the control commands to the automatic lifting and traveling device 3 and the automatic push-pull device 2, controlling their actions sequentially to complete the automatic translation.

[0062] In a preferred embodiment, the automatic lifting and walking device 3 and the automatic pushing and pulling device 2 are also remotely controlled by a remote control device 13.

[0063] By operating the automatic control device 12 or the remote controller, the vertical push rod 362 in the automatic lifting and walking device extends continuously, driving the roller 372 into the V-groove 113 of the guide rail 11 and completely supporting the screw conveyor until it leaves the surface 1 of the mud tank and reaches a certain height. Then, the automatic push-pull device 2 pushes the roller 372 in the V-groove 113 of the guide rail 11 to rotate and move the screw conveyor out to the outside of the centrifuge 5.

[0064] After the screw conveyor has been repaired, maintained, or replaced, the automatic push-pull device 2 pulls the screw conveyor from the outside of the centrifuge 5 by rotating the pull roller 372 along the guide rail 11 to the solid phase outlet position below the centrifuge 5. Then, the vertical push rod 362 in the automatic lifting and walking device continues to retract, driving the roller bracket 371 and roller 372 to move upward through the connecting pin, and the screw conveyor moves downward until the roller 372 leaves the V-groove 113 of the guide rail 11 and the screw conveyor is completely lowered and sits completely on the surface of the mud tank 1.

[0065] The automatic screw conveyor moving device described in this embodiment is highly automated. It can be operated with a single button via the automatic control device 12 or a remote controller to move the screw conveyor in or out from under the centrifuge 5, greatly reducing the labor intensity of workers. Furthermore, the equipment has a simple structure, is quick to install, easy to use, has high reliability, low manufacturing cost, and low energy consumption. It is purely electric, resulting in fast response, sensitive control, good synchronization, no lag, and no pollution, making it more environmentally friendly, efficient, and clean. It can be widely applied to other situations requiring the moving of mechanical equipment or components, with a broad range of applicability and application areas.

[0066] According to another aspect of the invention, a drill cuttings conveying device is also provided, comprising:

[0067] Several centrifuges 5 are installed above the surface of the mud tank 1;

[0068] A screw conveyor 4 is installed on the surface 1 of the mud tank, and the screw conveyor 4 is equipped with an automatic screw conveyor pushing device according to the above embodiment;

[0069] In the working position, the screw conveyor 4 is located below the centrifuge 5, and in the disassembly position, it is moved away from below the centrifuge 5.

[0070] Preferably, the centrifuge 5 includes a first centrifuge 51, a second centrifuge 52, and a third centrifuge 53. The three centrifuges 5 are arranged side by side, and the screw conveyor is located below the three centrifuges 5.

[0071] In the process of using the cuttings conveying device according to this embodiment, the movement of the screw conveyor is automatically controlled by electric means. When disassembling, replacing or repairing the screw conveyor, it is not necessary to disassemble the centrifuge 5, making the operation more convenient.

[0072] The drill cuttings conveying device described in this embodiment allows the solid mixture discharged from the centrifuge 5 to fall vertically into the conveyor below the centrifuge 5, resulting in smoother sand discharge and eliminating the need for a sand discharge trough. When it is necessary to disassemble and replace the screw conveyor 4, there is no need to disassemble and move multiple centrifuges 5 or carry out large-scale hoisting operations to move each centrifuge 5 before performing maintenance, repairs, or replacement of the screw conveyor, saving time and effort.

[0073] In the initial state (e.g.) Figure 2 As shown, the screw conveyor is in the working position.

[0074] When it is necessary to disassemble, replace or repair the screw conveyor, first operate the automatic control device 12 or remote controller to start the first automatic lifting and traveling device, the second automatic lifting and traveling device, the third automatic lifting and traveling device and the fourth automatic lifting and traveling device symmetrically installed on both sides of the screw conveyor to work synchronously. In the automatic lifting and traveling device, the roller 372 enters the V-groove 113 of the guide rail 11 under the push of the vertical push rod 362, and the vertical push rod 362 continues to extend to lift the screw conveyor as a whole and leave the surface 1 of the mud tank by a certain height.

[0075] Subsequently, the horizontal push rods 242 in the first automatic push-pull device 21 and the second automatic push-pull device 22 continue to extend, and the rollers 372 in the V-grooves 113 of the first guide rail 111 and the second guide rail 112 rotate, moving the screw conveyor from below the centrifuge 5 to the outer disassembly position (e.g., Figure 3 (As shown).

[0076] After the screw conveyor is repaired, maintained, or replaced, the automatic control device 12 or remote controller is operated to retract the horizontal push rod 242 in the first automatic push-pull device 21 and the second automatic push-pull device 22. The retraction of the horizontal push rod 242 drives the screw conveyor 4 to move, thereby pulling it back to the working position below the centrifuge 5.

[0077] Then, the vertical push rods 362 in the first, second, third, and fourth automatic lifting and traveling devices are retracted. The retraction of the vertical push rods 362 causes the screw conveyor 4 to descend and safely sit on the surface 1 of the mud tank. The vertical push rods 362 continue to retract, causing the roller mechanism 37 to disengage from the V-groove 113 of the guide rail 11.

[0078] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and / or modifications falling within the scope of the invention, and all changes and / or modifications made according to embodiments of the invention should be covered within the protection scope of the invention.

Claims

1. An automatic conveying device for a screw conveyor, characterized in that, include: Several guide rails (11) are set on the surface (1) of the mud tank, the two ends of which correspond to the working position and disassembly position of the screw conveyor (4), respectively; and Several automatic lifting and traveling devices (3) are arranged on both sides of the screw conveyor (4). The automatic lifting and traveling devices (3) are configured to extend downward and connect to the guide rail (11), and continue to extend to lift the screw conveyor (4) and detach it from the surface (1) of the mud tank. An automatic push-pull device (2) is arranged on the side of the screw conveyor (4). The automatic push-pull device (2) drives the screw conveyor (4) to move on the guide rail (11). There are two guide rails (11), which are respectively arranged at both ends of the screw conveyor (4). The automatic lifting and traveling devices (3) are divided into two groups, which are respectively arranged corresponding to the two guide rails (11). Each group includes two automatic lifting and traveling devices (3), which are respectively arranged on both sides of the screw conveyor (4). When the screw conveyor (4) moves, the automatic lifting and walking device (3) walks on the guide rail (11); when working, the screw conveyor (4) is in the working position, and when disassembling or repairing, the screw conveyor (4) is in the disassembly position. The automatic push-pull device (2) includes a support (23) fixed on the surface (1) of the mud tank, and a first telescopic component (24) is provided on the support (23). The first telescopic component (24) is detachably connected to a connecting rod (25), and the end of the connecting rod (25) is fixed to the side of the screw conveyor (4). The support (23) has a certain height. An installation device is fixed at the upper end of the support by bolts. The first telescopic component (24) is installed on the installation device. The telescopic method of the first telescopic component (24) is electric, hydraulic or pneumatic. The automatic lifting and walking device (3) includes a mounting base (35) fixed on the side of the screw conveyor (4), a second telescopic component (36) is provided on the mounting base (35), and a roller mechanism (37) is provided at the end of the second telescopic component (36). The second telescopic component (36) includes a vertical electric push rod assembly (361), the end of which is provided with a telescopic vertical push rod (362), the end of which is connected to the roller mechanism (37) via a second connecting pin (38).

2. The automatic conveyor pushing device for a screw conveyor according to claim 1, characterized in that, There are two automatic push-pull devices (2), which are respectively set at both ends of the screw conveyor (4).

3. The automatic conveyor pushing device for a screw conveyor according to claim 2, characterized in that, The first telescopic assembly (24) includes a horizontal electric push rod assembly (241), the end of which is provided with a telescopic horizontal push rod (242), the end of which is connected to the connecting rod (25) via a first connecting pin (243).

4. The automatic conveyor pushing device for a screw conveyor according to claim 3, characterized in that, The roller mechanism (37) includes a roller bracket (371) connected to the second telescopic component (36), and a rotatable roller (372) is provided on the roller bracket (371). The guide rail (11) is provided with a V-groove (113) that matches the roller (372), and the roller (372) can roll in the V-groove (113).

5. The automatic conveyor pushing device for a screw conveyor according to claim 4, characterized in that, An automatic control device (12) is provided on the surface (1) of the mud tank. The automatic control device (12) controls the automatic lifting and walking device (3) and the automatic pushing and pulling device (2) to make the screw conveyor (4) move automatically.

6. The automatic conveyor pushing device for a screw conveyor according to claim 5, characterized in that, The automatic lifting and walking device (3) and the automatic pushing and pulling device (2) are also remotely controlled by a remote control device (13).

7. A drill cuttings conveying device, characterized in that, include: Several centrifuges (5) are set above the surface (1) of the mud tank; A screw conveyor (4) is installed on the surface (1) of a mud tank, and the screw conveyor (4) is equipped with an automatic screw conveyor pushing device according to any one of claims 1 to 6; The screw conveyor (4) is located below the centrifuge (5) when in the working position, and is removed from below the centrifuge (5) when in the disassembly position.

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