A drilling mud separation device

Abstract

This utility model discloses a drilling mud separation device, including a shell, a screen cylinder disposed inside the shell, and a feed port and a mud discharge port disposed at both ends of the shell and communicating with the screen cylinder. A screw conveyor structure is installed inside the screen cylinder, with one end of the screw conveyor structure connected to the output end of a drive motor. A drainage channel is provided between the inner wall of the shell and the outer periphery of the screen cylinder. A cleaning component is installed in the drainage channel, rotating relative to the screen cylinder along its axial direction. The cleaning component can promptly unclog the filter holes on the surface of the screen cylinder. In this utility model, by installing a cleaning component in the drainage channel and rotating relative to the screen cylinder, the filter holes on the surface of the screen cylinder can be promptly unclogged, effectively preventing clogging and ensuring that the dewatering efficiency of the screen cylinder remains stable, thus maintaining efficient operation of the mud separation process.

Description

Technical Field

[0001] This utility model relates to the technical field of drilling mud treatment equipment, specifically a drilling mud separation device. Background Technology

[0002] Oil drilling operations generate a large amount of waste drilling fluid. The main method for treating waste drilling mud is solidification, which involves adding solidifying agents to the drilling mud pit to convert the mud from a liquid phase to a solid phase, followed by dewatering by compression. Currently, most dewatering equipment uses screw conveyor dewatering systems to treat waste mud. However, during the compression dewatering process, the mud easily clogs the filter holes on the side of the cylinder, resulting in reduced dewatering efficiency. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a drilling mud separation device to solve the technical problems mentioned in the prior art.

[0004] A drilling mud separation device includes a housing, a screen cylinder disposed inside the housing, and a feed port and a mud discharge port disposed at both ends of the housing and communicating with the screen cylinder. A screw conveyor structure is provided inside the screen cylinder, one end of which is connected to the output end of a drive motor. A drainage channel is provided between the inner wall of the housing and the outer periphery of the screen cylinder. A cleaning component is provided in the drainage channel. The cleaning component is rotatably disposed relative to the screen cylinder along the axial direction of the screen cylinder. The cleaning component is used to unclog the filter holes on the surface of the screen cylinder.

[0005] Optionally, a drive assembly is mounted on the screen cylinder, the drive assembly comprising:

[0006] A toothed ring is connected to the screen cylinder, and the axis of the toothed ring coincides with that of the screen cylinder;

[0007] The gear meshes with the gear ring;

[0008] A drive shaft passes through the gear, and at least one end extends into the drain channel or passes through the housing and is connected to a power unit.

[0009] Optionally, the gear ring or the screen cylinder is rotatably connected to the housing.

[0010] Optionally, the power unit may be configured as a rotary motor, a handle, or a transmission assembly;

[0011] The transmission component is configured as a chain drive structure or a belt drive structure, and the power input end of the transmission component is connected to the output shaft of the drive motor, and the power output end of the transmission component is connected to the transmission shaft.

[0012] Optionally, the cleaning component includes:

[0013] An air blowing pipe is provided in the drainage channel. Multiple sets of air blowing holes and / or high-pressure nozzles are provided on the outer periphery of the air blowing pipe facing the water filter hole of the screen cylinder. The air blowing holes and the high-pressure nozzles are respectively connected to the inner wall of the air blowing pipe.

[0014] The air supply unit has its outlet connected to the inlet of the air blowing pipe via a pipe.

[0015] Optionally, the axial direction of the air blowing pipe is parallel to the axial direction of the sieve cylinder.

[0016] Optionally, the gas supply unit is configured as an induced draft fan or a high-pressure gas storage tank.

[0017] Optionally, a fixing bracket is provided at the bottom of the shell, and the mounting surface of the fixing bracket is inclined to set the sludge discharge port of the shell inclined upward along the horizontal plane.

[0018] Optionally, a mudguard is provided at the end of the housing and on the outer periphery of the mud discharge port.

[0019] Optionally, the bottom of the housing is provided with a drain port, and the drain port is connected to the drain channel.

[0020] The beneficial effects that this utility model can produce include:

[0021] The drilling mud separation device provided by this utility model can promptly unclog the filter holes on the surface of the screen cylinder by setting a cleaning component in the drainage channel and rotating it relative to the screen cylinder, effectively avoiding the clogging of the filter holes, ensuring that the dewatering efficiency of the screen cylinder remains stable, and maintaining the efficient operation of mud separation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the drilling mud separation device of this utility model;

[0023] Figure 2 For the present utility model Figure 1 Internal structure diagram;

[0024] Figure 3 In this utility model Figure 2 A schematic diagram of the structure of the screen cylinder, drive assembly, and air blowing pipe;

[0025] In the diagram: 1. Shell, 2. Screen cylinder, 3. Feed port, 4. Sludge discharge port, 5. Screw structure, 6. Drive motor, 7. Drainage channel, 8. Gear ring, 9. Gear, 10. Drive shaft, 11. Power unit, 12. Air blowing pipe, 13. Air supply unit, 14. Fixed bracket, 15. Mud baffle, 16. Drainage port. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1 As shown, this utility model provides a drilling mud separation device, including a housing 1, a screen cylinder 2 disposed inside the housing 1, and a feed port 3 and a mud discharge port 4 disposed at both ends of the housing 1 and communicating with the screen cylinder 2. A screw conveyor structure 5 is provided inside the screen cylinder 2, and one end of the screw conveyor structure 5 is connected to the output end of a drive motor 6. A drain channel 7 is provided between the inner wall of the housing 1 and the outer periphery of the screen cylinder 2 for collecting the separated waste liquid. A cleaning component is provided inside the drain channel 7. The cleaning component is rotatably disposed relative to the screen cylinder 2 along the axial direction of the screen cylinder 2. The cleaning component is used to unclog the filter holes on the surface of the screen cylinder 2 to ensure stable dewatering efficiency of the screen cylinder 2.

[0028] In this embodiment, as Figure 2 As shown, the screen cylinder 2 is a moving part, and the cleaning assembly is a fixed part. Specifically, a drive assembly is installed on the screen cylinder 2, such as... Figure 3 As shown, the drive assembly includes a gear ring 8, a gear 9, a drive shaft 10, and a power unit 11. The gear ring 8 is connected to the screen cylinder 2, and the axes of the gear ring 8 and the screen cylinder 2 coincide, such as by coaxially fixing the gear ring 8 to the outer periphery, inner wall, or end of the screen cylinder 2; the gear 9 meshes with the gear ring 8; the drive shaft 10 passes through the gear 9, and at least one end extends into the drainage channel 7 or penetrates the housing 1 and is connected to the power unit 11. During mud separation operations, the power unit 11 can drive the screen cylinder 2 to rotate intermittently or continuously. This prevents the mud from contacting the bottom of the screen cylinder 2 for a long time due to its own weight, reducing bottom wear and corrosion, and also allows the mud that has not been scraped clean from the bottom to be agitated during the rotation of the screen cylinder 2, facilitating the cleaning of the assembly and unblocking the filter holes on the surface of the screen cylinder 2, further improving the dewatering efficiency. In the above, the gear ring 8 or the screen cylinder 2 is rotatably connected to the housing 1, such as by... Figure 2 and Figure 3 The toothed ring 8 is rotatably connected to the housing 1 via a rotating ring, which effectively reduces the wear of the screen cylinder 2 and extends the service life of the equipment.

[0029] In the above, the power unit 11 can be flexibly configured as a rotary motor, handle, or transmission assembly according to the size of the equipment and the operating environment. The transmission assembly adopts a chain drive structure or a belt drive structure (using two sets of sprockets / pulleys connected by a chain / belt). Its power input end is connected to the output shaft of the drive motor 6, and its power output end is connected to the transmission shaft 10, thereby enabling the drive motor 6 to synchronously drive the screen cylinder 2 and the auger spiral structure 5 to rotate, reducing operating costs. Figure 1 and Figure 2 As shown, in this embodiment, in order to facilitate the intermittent start-up of the power unit 11, it is configured as a rotary motor to achieve automated operation and reduce labor intensity.

[0030] Furthermore, such as Figure 1 and Figure 3 As shown, the cleaning assembly includes an air blowing pipe 12 and an air supply unit 13. The air blowing pipe 12 is located within the drainage channel 7. Multiple sets of air blowing holes and / or high-pressure nozzles are provided on the outer periphery of the air blowing pipe 12 facing the filter holes of the screen cylinder 2, and the air blowing holes and high-pressure nozzles are respectively connected to the inner wall of the air blowing pipe 12. The outlet end of the air supply unit 13 is connected to the inlet end of the air blowing pipe 12 via a pipe. Specifically, the axial direction of the air blowing pipe 12 is parallel to the axial direction of the screen cylinder 2 to ensure uniform dredging effect on the surface of the screen cylinder 2. The air supply unit 13 is configured as a blower or a high-pressure air tank. If only air blowing holes are provided on the surface of the air blowing pipe 12, a high-pressure air tank can be used to provide purging gas with a certain delivery pressure to ensure dredging effect. If high-pressure nozzles are installed inside the air blowing holes on the surface of the air blowing pipe 12, either the blower or the high-pressure air tank can be used as a purging gas supply source to spray the purging gas onto the surface of the screen cylinder 2 to dredge the mud in the filter holes.

[0031] Furthermore, such as Figure 1 and Figure 2 As shown, a fixed bracket 14 is provided at the bottom of the housing 1. The mounting surface of the fixed bracket 14 is inclined to tilt the sludge discharge port 4 of the housing 1 upward along the horizontal plane. By configuring the fixed bracket 14, the user can directly install the housing 1 on the ground and put it into use without having to adjust the installation angle of the housing 1 before use. At the same time, in order to achieve efficient sludge recycling, a mud baffle 15 is provided at the end of the housing 1 and on the outer periphery of the sludge discharge port 4 to reduce the area of ​​sludge spillage. In addition, a drain port 16 is provided at the bottom of the housing 1, which is connected to the drain channel 7 to facilitate the recycling and treatment of the separated waste liquid.

Claims

1. A drilling mud separation device, comprising a housing (1), a screen cylinder (2) disposed inside the housing (1), and a feed port (3) and a mud discharge port (4) disposed at both ends of the housing (1) and communicating with the screen cylinder (2), wherein a screw conveyor structure (5) is provided inside the screen cylinder (2), one end of the screw conveyor structure (5) is connected to the output end of a drive motor (6), and a drain channel (7) is provided between the inner wall of the housing (1) and the outer periphery of the screen cylinder (2), characterized in that, A cleaning component is provided in the drainage channel (7). The cleaning component is rotatably arranged relative to the sieve cylinder (2) along the axial direction of the sieve cylinder (2). The cleaning component is used to unclog the filter holes on the surface of the sieve cylinder (2).

2. The drilling mud separation device according to claim 1, characterized in that, A drive assembly is installed on the sieve cylinder (2), the drive assembly comprising: A toothed ring (8) is connected to the sieve cylinder (2), and the axis of the toothed ring (8) coincides with that of the sieve cylinder (2); The gear (9) meshes with the gear ring (8); A drive shaft (10) is inserted into the gear (9), and at least one end extends into the drain channel (7) or through the housing (1) and is connected to a power unit (11).

3. The drilling mud separation device according to claim 2, characterized in that, The toothed ring (8) or the sieve cylinder (2) is rotatably connected to the housing (1).

4. A drilling mud separation device according to claim 2, characterized in that, The power unit (11) is configured as a rotary motor, handle or transmission assembly; The transmission component is configured as a chain drive structure or a belt drive structure, and the power input end of the transmission component is connected to the output shaft of the drive motor (6), and the power output end of the transmission component is connected to the transmission shaft (10).

5. A drilling mud separation device according to claim 1, characterized in that, The cleaning component includes: An air blowing pipe (12) is provided in the drain channel (7). The outer periphery of the air blowing pipe (12) facing the water filter hole of the screen cylinder (2) is provided with multiple sets of air blowing holes and / or high-pressure nozzles, and the air blowing holes and the high-pressure nozzles are respectively connected to the inner wall of the air blowing pipe (12). The air supply unit (13) has its air outlet connected to the air inlet of the air blowing pipe (12) via a pipe.

6. A drilling mud separation device according to claim 5, characterized in that, The axial direction of the air blowing pipe (12) is parallel to the axial direction of the sieve cylinder (2).

7. A drilling mud separation device according to claim 5, characterized in that, The gas supply unit (13) is configured as an induced draft fan or a high-pressure gas storage tank.

8. A drilling mud separation device according to claim 1, characterized in that, A fixed bracket (14) is provided at the bottom of the housing (1). The mounting surface of the fixed bracket (14) is inclined to set the mud discharge port (4) of the housing (1) upward along the horizontal plane.

9. A drilling mud separation device according to claim 8, characterized in that, A mudguard (15) is provided at the end of the shell (1) and on the outer periphery of the mud discharge port (4).

10. A drilling mud separation device according to claim 1, characterized in that, The bottom of the housing (1) is provided with a drain port (16), and the drain port (16) is connected to the drain channel (7).

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