Automatic cleaning and purifying system and method for magnetic substances in drilling fluid

Abstract

The invention discloses an automatic cleaning and purifying system and method for magnetic substances in drilling fluid, relates to the technical field of drilling, and solves the problems that underground tools and instruments break down due to high content of the magnetic substances in the existing drilling fluid and normal work is affected by low temperature in winter construction. The system comprises a supporting and protecting support, an anti-explosion control cabinet is arranged on the top of the supporting and protecting support, and a magnetic substance removing unit is arranged in the supporting and protecting support; a recycling unit is arranged at the lower part of the magnetic substance removing unit; the recycling unit is located at the bottom of the supporting and protecting support and used for recycling removed substances of the magnetic substance removing unit. The magnetic substance removal unit and the recovery unit form a magnetic substance treatment device; according to the method, the drilling fluid flowing in the drilling fluid flow channel in real time is purified through the magnetic substance treatment device. The automatic cleaning and purifying system for the magnetic substances in the drilling fluid can remove the magnetic substances in the drilling fluid, reduce the failure rate of tools and instruments, increase anti-freezing heating modes and improve the working efficiency.

Description

Technical Field

[0001] This invention relates to the field of drilling technology, and in particular to an automatic cleaning and purification system and method for magnetic materials in drilling fluid. Background Technology

[0002] Currently, domestic equipment for removing magnetic materials is mainly used in the coal mining industry, with limited development of devices specifically for cleaning magnetic materials from drilling fluids in the drilling sector. At drilling sites, most operations involve manually adding magnetic rods to the mud tank, then removing them after a certain time to remove adsorbed iron filings. This method is inefficient, time-consuming, and labor-intensive. Electromagnetic slurry demagnetizers can achieve fully automatic feeding and discharging, and remove elemental iron, but their principle of generating magnetism through electromagnetism cannot effectively guarantee safety at drilling sites, and their processing capacity of 20 m³ / h is relatively small, primarily limiting their application to the coal mining industry. Drilling fluid ferromagnetic material removal devices can reach a processing capacity of 90 m³ / h, but require a pump to deliver the drilling fluid to the device, placing high demands on the pump for high-volume operations. In northern regions, winter construction often uses insulated sheds for frost protection, but the insulation effect is poor. Summary of the Invention

[0003] This invention addresses the problems in existing drilling fluids, such as high magnetic content leading to malfunctions of downhole tools and instruments, and the impact of low temperatures on normal operation during winter construction. It provides an automatic cleaning and purification system for magnetic substances in drilling fluids. This system can remove magnetic substances from drilling fluids, reduce tool and instrument failure rates, add anti-freezing heating methods, and improve operational efficiency.

[0004] The present invention solves its problems through the following technical solution: the drilling fluid magnetic material automatic cleaning and purification system includes a support and protective bracket;

[0005] The top of the support and protective bracket is equipped with an explosion-proof control cabinet, and the support and protective bracket is equipped with a magnetic material removal unit.

[0006] The magnetic material removal unit is equipped with a recycling unit at its lower part;

[0007] The recycling unit is located at the bottom of the supporting and protective bracket, and is used to recycle the material removed by the magnetic material removal unit.

[0008] The magnetic material removal unit and the recycling unit constitute a magnetic material processing device.

[0009] Furthermore, the supporting and protective bracket is inverted T-shaped; it includes an upper vertical plate and a bottom horizontal plate; the bottom horizontal plate is a horizontal groove plate; the slots of the two horizontal groove plates are oppositely opened on the inner side of the groove plate; the two vertical plates have slots on their opposite inner sides;

[0010] The drilling fluid channel is a square pipe with openings at both ends and the top; the supporting and protective bracket sits on the upper part of the drilling fluid channel; the bottom of the recovery unit corresponds to the upper opening of the drilling fluid channel.

[0011] Furthermore, the magnetic material removal unit includes parallel plates arranged opposite each other, namely an upper movable plate and a lower shearing plate; the shearing plate has a circular channel through which a strong magnetic rod passes; the movable plate has several threaded circular holes, and the top end of the strong magnetic rod is threadedly connected to the circular holes on the movable plate; the lower end of the strong magnetic rod can move up and down in the channel of the shearing plate; the movable plate is connected to the movable unit.

[0012] Furthermore, the moving unit includes two cylinders A, which are respectively connected to opposite sides of the moving plate via sliders; the moving plate moves up and down with the cylinder sliders.

[0013] The two cylinders A are installed in the vertical plate groove of the support and protection bracket; the shearing plate is connected to the vertical plate of the support and protection bracket on both sides.

[0014] Furthermore, the recycling unit includes a recycling tray, which is installed between the horizontal groove plates at the bottom of the supporting and protective bracket; the recycling tray is connected to a front and rear moving unit.

[0015] Furthermore, the forward and backward moving unit connected to the recovery tray includes a pair of cylinders B, which are installed in the slots of the horizontal groove plate of the support and protection bracket; a slide rod is connected to the rear of the recovery tray facing the drilling fluid flow channel opening, and the two ends of the slide rod are respectively connected to the slider of the cylinder B, so that the recovery tray moves back and forth.

[0016] Furthermore, the explosion-proof control cabinet is equipped with a partition in the middle. The space on one side of the partition contains the main control circuit module, the isolation fence, the heating regulating valve and the heating element; the space on the other side of the partition contains the power module, the position sensor and the temperature sensor.

[0017] Furthermore, the heating regulating valve and heating element are mounted on the bottom plate of the explosion-proof control cabinet; a support frame is provided on the upper part of the heating regulating valve and heating element, and the main control circuit module and isolation fence are mounted on the support frame; the power module, position sensor and temperature sensor are respectively fixedly mounted on the bottom plate of the explosion-proof control cabinet.

[0018] Furthermore, the power module is a voltage conversion device, usually referred to as a single-output power supply; the power module is used to power the device, converting 220V AC voltage to 24V DC voltage.

[0019] This invention also provides a method for automatically cleaning and purifying magnetic materials in drilling fluid, comprising the following steps:

[0020] S1. The two ends of the drilling fluid flow channel are respectively connected to a vibrating screen and a drilling fluid tank, and the drilling fluid returned from the well flows in real time in the drilling fluid flow channel;

[0021] S2. Two sets of magnetic material treatment devices are fixedly installed on the upper part of the drilling fluid flow channel; the start-up time interval of the two sets of devices and the immersion time of the strong magnetic rod in the drilling fluid are set, and the strong magnetic rod is always kept in the drilling fluid flow channel to adsorb magnetic material by the intermittent operation of the two sets of devices.

[0022] S3. When the two sets of magnetic material processing devices are connected to the power supply and gas source, the device is started by the power supply switch. When the moving plate moves downward to the shear plate, the lower part of the strong magnetic rod is immersed in the drilling fluid in the drilling fluid channel. After staying for a set time, the moving plate is lifted up.

[0023] During the lifting process of the moving plate, when the position sensor detects that the moving plate has moved to a quarter of the height from the top of the support and protective bracket, it transmits a signal to the main control circuit module. After receiving the signal, the main control circuit module feeds back the signal of the recovery tray moving backward to cylinder B, so that the recovery tray moves backward into the area directly below the device, ready for recovery.

[0024] When the position sensor detects that the recycling tray has moved directly under the device, the signal is fed back to the main control circuit module. The main control circuit module then transmits the signal to cylinder A to continue lifting the moving plate to the top of the support and protective bracket. At this time, during the lifting process of the strong magnetic rod, the magnetic material adsorbed by the strong magnetic rod is removed with the cooperation of the shearing plate and the dustproof ring. The removed magnetic material falls onto the recycling tray.

[0025] The moving plate continues to move upward. When the position sensor detects that the moving plate has moved to the top of the support, it feeds back the signal to the main control circuit module. The main control circuit module feeds back the hovering time of the moving plate at the top of the support and the signal of the forward movement of the recovery tray to cylinder B. The recovery tray moves forward to the front end and removes the cleared magnetic material.

[0026] When the position sensor detects that the recovery tray has moved to the frontmost position, the signal is fed back to the main control circuit module. The main control circuit module then sends a signal to the cylinder to move the moving plate downwards, causing the strong magnetic rod to be immersed in the drilling fluid. This process is repeated to achieve automatic cleaning and purification of magnetic substances in the drilling fluid.

[0027] Furthermore, during winter construction, the heating element is preset to a temperature of 0-10°C. The power switch is turned on to start the system, and the heating regulating valve begins to adjust the temperature of the heating element to the set value. The temperature sensor detects the internal temperature of the explosion-proof control cabinet in real time and feeds it back to the main control circuit module, realizing automatic real-time temperature detection and regulation control, so that the internal temperature of the explosion-proof control cabinet is always kept at the set constant temperature, achieving the system's outdoor anti-freezing and heat preservation function in winter.

[0028] Furthermore, the start-up time interval between the two sets of devices is set to 5-10 minutes; the immersion time of the strong magnetic rod in the drilling fluid is set to 15-20 minutes; and the moving plate is suspended for 5-10 seconds when it moves to the top of the support.

[0029] Compared with the above-mentioned background technology, the present invention has the following beneficial effects:

[0030] This invention is an automatic system for cleaning and purifying magnetic substances in drilling fluid. It is installed at the upper end of the drilling fluid flow channel opening on site. Two sets of magnetic substance treatment devices are used simultaneously. By controlling the intermittent time, the two sets of devices work intermittently to ensure that there are always strong magnetic rods adsorbing magnetic substances in the drilling fluid channel. The control cabinet has preset working frequency and heating temperature. Relays and solenoid valves work together to make the top moving plate, shear plate and recovery tray move vertically and horizontally under the drive of the cylinder, so as to achieve automatic cleaning of magnetic substances in drilling fluid. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the automatic cleaning and purification system for magnetic materials in drilling fluid according to the present invention.

[0033] Figure 2 This is a schematic diagram of the recycling unit structure of the present invention;

[0034] Figure 3 This is a schematic diagram of a portion of the recycling unit structure of the present invention;

[0035] Figure 4 This is a schematic diagram of the moving unit structure of the present invention;

[0036] Figure 5 This is a front view of the moving unit of the present invention;

[0037] Figure 6 This is a schematic diagram of the internal structure of the control cabinet of the present invention;

[0038] Figure 7 This is a schematic diagram of the system of the present invention.

[0039] In the diagram: 1. Display screen; 2. Power switch; 3. Cylinder A; 4. Strong magnetic rod; 5. Dustproof ring; 6. Shearing plate; 7. Cylinder B; 8. Recycling tray; 9. Explosion-proof control cabinet; 10. Main control circuit module; 11. Isolation fence; 12. Power module; 13. Position sensor; 14. Heating regulating valve; 15. Heating element; 16. Temperature sensor; 17. Moving plate; 18. Drilling fluid flow channel; 19. Sliding rod; 20. Support and protective bracket. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0041] Figure 1 This is a flowchart of an automatic cleaning and purification system for magnetic materials in drilling fluid. Figure 1 As shown, an automatic cleaning and purification system for magnetic materials in drilling fluid includes a support and protective bracket 20.

[0042] The top of the support and protective bracket 20 is equipped with an explosion-proof control cabinet 9, and the support and protective bracket is equipped with a magnetic material removal unit.

[0043] The magnetic material removal unit is equipped with a recycling unit at its lower part;

[0044] The recycling unit is located at the bottom of the supporting and protective bracket, and is used to recycle the material removed by the magnetic material removal unit.

[0045] The magnetic material removal unit and the recycling unit constitute a magnetic material processing device.

[0046] The supporting and protective bracket 20 is inverted T-shaped; it includes an upper vertical plate and a bottom horizontal plate connected to it; the bottom horizontal plate is a horizontal groove plate; the slots of the two horizontal groove plates are opposite to each other on the inner side of the groove plate; the two vertical plates have slots on their opposite inner sides.

[0047] The drilling fluid channel 18 is a square pipe with openings at both ends and the top; the supporting and protective bracket sits on the upper part of the drilling fluid channel; the bottom of the recovery unit corresponds to the upper opening of the drilling fluid channel. The openings at both ends of the drilling fluid channel 18 are respectively connected to a vibrating screen and a drilling fluid tank; the supporting and protective bracket 20 is fixedly connected to the upper part of the drilling fluid channel 18.

[0048] The magnetic material removal unit includes parallel plates arranged opposite each other, namely an upper movable plate 17 and a lower shearing plate 6; the shearing plate 6 has a circular channel through which a strong magnetic rod 4 passes; the movable plate 17 has several threaded circular holes, and the top end of the strong magnetic rod 4 is threadedly connected to the circular holes on the movable plate 17; the lower end of the strong magnetic rod 4 can move up and down in the channel of the shearing plate 6; the movable plate 17 is connected to the movable unit.

[0049] like Figure 4 , Figure 5 As shown, the moving unit includes two cylinders A3, which are respectively connected to opposite sides of the moving plate 17 via sliders; the moving plate 17 moves up and down with the cylinder sliders.

[0050] The two cylinders A3 are installed in the vertical plate groove of the support and protection bracket 20; the shearing plate 6 is connected to the vertical plate of the support and protection bracket 20 on both sides.

[0051] like Figure 2 , Figure 3 As shown, the recycling unit includes a recycling tray 8, which is installed between the horizontal groove plates at the bottom of the support and protective bracket; the recycling tray 8 is connected to the front and rear moving unit.

[0052] The recovery tray 8 is connected to a front and rear moving unit, which includes a pair of cylinders B7. The cylinders B7 are installed in the slots of the horizontal groove plate of the support and protection bracket. The rear of the recovery tray 8 is connected to a slide rod 19 on the side facing the opening of the drilling fluid channel 18. The two ends of the slide rod 19 are respectively connected to the sliders of the cylinders B7, so that the recovery tray 8 can move back and forth.

[0053] like Figure 6 , Figure 7 As shown, the explosion-proof control cabinet 9 is equipped with a main control circuit module 10, an isolation barrier 11, a power supply module 12, a position sensor 13, a heating regulating valve 14, a heating element 15, and a temperature sensor 16.

[0054] The explosion-proof control cabinet 9 has a partition in the middle. A main control circuit module 10, an isolation barrier 11, a heating regulating valve 14, and a heating element 15 are installed in the space on one side of the partition. The heating regulating valve 14 and the heating element 15 are mounted on the bottom plate of the explosion-proof control cabinet 9. A support frame is installed above the heating regulating valve 14 and the heating element 15, and the main control circuit module 10 and the isolation barrier 11 are mounted on the support frame. A power module 12, a position sensor 13, and a temperature sensor 16 are installed in the space on the other side of the partition. The power module 12, the position sensor 13, and the temperature sensor 16 are respectively fixedly mounted on the bottom plate of the explosion-proof control cabinet 9. The partition in the middle of the explosion-proof control cabinet 9 is used to prevent the left-side components from moving to the right-side power module 12 when the device vibrates. The main control circuit module 10 is connected to a display.

[0055] The power module 12 is a voltage conversion device, usually referred to as a single-output power supply; the power module 12 is used to power the device, converting 220V voltage to 24V.

[0056] The main control circuit module is connected to the display. Based on the STM32F103VCT6 microprocessor, the main control circuit module, together with the relay output circuit and the current detection circuit, records and stores various working condition data, detects the working status of the cylinder, and feeds back the control signal to the solenoid valve by modifying the working frequency through internal settings. It also adjusts the current by setting the heating temperature internally.

[0057] The cylinder is a magnetically coupled rodless cylinder, equipped with a magnetic switch to detect the cylinder's position. It serves as the power mechanism for the device to enable the strong magnetic rod to move up and down and the recovery tray to move horizontally.

[0058] The shearing plate 6 is made of aluminum alloy and is equipped with a dustproof ring 5 to remove magnetic substances attracted by the strong magnetic rod, and can also fix the strong magnetic rod so that it can move vertically up and down.

[0059] The supporting and protective bracket is made of aluminum alloy.

[0060] An automatic cleaning and purification method for magnetic substances in drilling fluid includes the following steps:

[0061] S1. The two ends of the drilling fluid flow channel are respectively connected to a vibrating screen and a drilling fluid tank, and the drilling fluid returned from the well flows in real time in the drilling fluid flow channel;

[0062] S2. Two sets of magnetic material treatment devices are fixedly installed on the upper part of the drilling fluid flow channel 18. The start-up time interval of the two sets of devices is set to 5-10 minutes, and the immersion time of the strong magnetic rod in the drilling fluid is 15 minutes. By intermittently working the two sets of devices, the strong magnetic rod is always kept in the drilling fluid flow channel to adsorb magnetic materials.

[0063] S3. The two sets of magnetic material processing devices are connected to the power and air supply. The devices are started via the power switch 2. When the moving plate 17 moves downwards to the shear plate 6, the lower part of the strong magnetic rod 4 is immersed in the drilling fluid. After a set time, the moving plate 17 is lifted. Figure 7 As shown;

[0064] When the position sensor 13 detects that the moving plate 17 has moved to a quarter of the height from the top of the support and protective bracket 20, it transmits a signal to the main control circuit module 10. After receiving the signal, the main control circuit module 10 feeds back the signal of the recovery tray moving backward to the cylinder B7, so that the recovery tray 8 moves backward into the area directly below the device, ready for recovery.

[0065] When the position sensor detects that the recycling tray has moved to the bottom of the device, the signal is fed back to the main control circuit module 10. The main control circuit module 10 transmits the signal to the cylinder 3 to continue lifting the moving plate 17 to the top of the support and protective bracket 20. At this time, during the lifting process of the strong magnetic rod 4, the magnetic material adsorbed by the strong magnetic rod 4 is removed with the cooperation of the shearing plate 6 and the dustproof ring 5. The removed magnetic material falls onto the recycling tray.

[0066] The moving plate 17 continues to move upward. When the position sensor 13 detects that the moving plate 17 has moved to the top of the support, it feeds back the signal to the main control circuit module 10. The main control circuit module 10 feeds back the hovering time of the moving plate 17 at the top of the support and the signal of the forward movement of the recovery tray to the cylinder B7. The recovery tray moves forward to the front end and removes the cleared magnetic material.

[0067] When the position sensor 13 detects that the recovery tray has moved to the frontmost position, the signal is fed back to the main control circuit module 10. The main control circuit module then sends a signal to the cylinder 3 to move the moving plate 17 downward, causing the strong magnetic rod to be immersed in the drilling fluid. This process is repeated to achieve automatic cleaning and purification of magnetic substances in the drilling fluid.

[0068] During winter construction, the heating element 15 is preset to a temperature of 0-10°C. The power switch 2 starts the system, and the heating regulating valve 14 begins to adjust the temperature of the heating element 15 to the set value. The temperature sensor 16 detects the internal temperature of the explosion-proof control cabinet in real time and feeds it back to the main control circuit module 10, realizing automatic real-time temperature detection and regulation control, so that the internal temperature of the explosion-proof control cabinet is always kept at the set constant temperature, achieving the system's outdoor anti-freezing and heat preservation function in winter.

[0069] The time interval between the start-up of the two sets of devices is set to 5-10 minutes; the immersion time of the strong magnetic rod in the drilling fluid is set to 15-20 minutes; and the moving plate is suspended for 5-10 seconds when it moves to the top of the support.

[0070] The explosion-proof control cabinet of this invention contains a main control circuit module, an isolation barrier, a power supply module, a position sensor, a temperature sensor, a heating regulating valve, and a heating element. The power supply module, position sensor, temperature sensor, heating regulating valve, and heating element are fixed to the base plate of the explosion-proof control cabinet. The main control circuit module and the isolation barrier are fixed to a rack above the heating regulating valve and heating element. An external 220V power supply is connected, which is converted to 24V by the power supply module and then powers the display screen and main control circuit module through the isolation barrier. The temperature sensor and position sensor transmit data to the main control circuit module via data cables. The main control circuit module then transmits corresponding output signals to the heating regulating valve and cylinder, causing the heating element and cylinder to perform corresponding signal actions.

[0071] This invention relates to an automatic cleaning and purification system for magnetic substances in drilling fluid, installed at the upper end of the drilling fluid flow channel opening. Two sets of magnetic substance treatment devices are used simultaneously, and by controlling the intermittent time, the two sets of devices work intermittently to ensure that a strong magnetic rod is always present in the drilling fluid channel to attract magnetic substances. The control cabinet has preset operating frequency and heating temperature, and relays and solenoid valves work together to make the top moving plate, shear plate, and recovery tray move vertically and horizontally under the drive of the cylinder, thereby achieving automatic cleaning of magnetic substances in the drilling fluid.

[0072] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the implementation methods of the present invention, and should be understood that the scope of protection of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the technical teachings disclosed in this invention without departing from the spirit of the invention, and these modifications and combinations are still within the scope of protection of the present invention.

Claims

1. An automatic cleaning and purification system for magnetic materials in drilling fluid, characterized in that: Including the protective support bracket (20); The top of the support and protective bracket (20) is equipped with an explosion-proof control cabinet (9), and the support and protective bracket is equipped with a magnetic material removal unit. The magnetic material removal unit is equipped with a recycling unit at its lower part; The recycling unit is located at the bottom of the supporting and protective bracket, and is used to recycle the material removed by the magnetic material removal unit. The magnetic material removal unit and the recycling unit constitute a magnetic material processing device.

2. The automatic cleaning and purification system for magnetic materials in drilling fluid according to claim 1, characterized in that: The supporting and protective bracket (20) is an inverted T-shape; it includes an upper vertical plate and a bottom horizontal plate; the bottom horizontal plate is a horizontal groove plate; the grooves of the two horizontal groove plates are opened opposite to each other on the inner side of the groove plate; the two vertical plates have grooves opened opposite to each other on the inner side; The drilling fluid channel (18) is a square pipe with openings at both ends and the top; the supporting and protective bracket sits on the upper part of the drilling fluid channel; the bottom of the recovery unit corresponds to the upper opening of the drilling fluid channel.

3. The automatic cleaning and purification system for magnetic materials in drilling fluid according to claim 2, characterized in that: The magnetic material removal unit includes parallel plates arranged opposite each other, namely an upper movable plate (17) and a lower shearing plate (6); a circular channel is opened on the shearing plate (6), and a strong magnetic rod (4) passes through the channel; a plurality of threaded circular holes are opened on the movable plate (17), and the top end of the strong magnetic rod (4) is threadedly connected to the circular holes on the movable plate; the lower end of the strong magnetic rod (4) can move up and down in the channel of the shearing plate (6); the movable plate (17) is connected to the movable unit.

4. The automatic cleaning and purification system for magnetic materials in drilling fluid according to claim 3, characterized in that: The moving unit includes two cylinders A (3), which are respectively connected to opposite sides of the moving plate (17) via sliders; the moving plate (17) moves up and down with the cylinder sliders; The two cylinders A (3) are installed in the vertical plate groove of the support and protection bracket (20); the shear plate (6) is connected to the vertical plate of the support and protection bracket on both sides.

5. The automatic cleaning and purification system for magnetic materials in drilling fluid according to claim 4, characterized in that: The recycling unit includes a recycling tray (8), which is installed between the horizontal groove plates at the bottom of the support and protective bracket; the recycling tray (8) is connected to the front and rear moving unit.

6. The automatic cleaning and purification system for magnetic materials in drilling fluid according to claim 5, characterized in that: The recovery tray (8) is connected to a front and rear moving unit, which includes a pair of cylinders B (7), which are installed in the slots of the horizontal groove plate of the support and protection bracket; the rear of the recovery tray (8) is connected to a slide rod (19) on the side facing the opening of the drilling fluid channel (18), and the two ends of the slide rod (19) are respectively connected to the slider of the cylinders B (7) to move the recovery tray back and forth.

7. The automatic cleaning and purification system for magnetic materials in drilling fluid according to claim 1, characterized in that: The explosion-proof control cabinet (9) has a partition in the middle. The space on one side of the partition contains the main control circuit module (10), the isolation barrier (11), the heating regulating valve (14) and the heating element (15); the space on the other side of the partition contains the power module (12), the position sensor (13) and the temperature sensor (16).

8. The automatic cleaning and purification system for magnetic materials in drilling fluid according to claim 7, characterized in that: The heating regulating valve (14) and heating element (15) are installed on the bottom plate of the explosion-proof control cabinet; a support frame is provided on the upper part of the heating regulating valve (14) and heating element (15), and the main control circuit module (10) and isolation fence (11) are installed on the support frame; the power module (12), position sensor (13) and temperature sensor (16) are respectively fixedly installed on the bottom plate of the explosion-proof control cabinet.

9. The automatic cleaning and purification system for magnetic materials in drilling fluid according to claim 7, characterized in that: The power module (12) is a voltage conversion device. The power module is used to supply power to the device and convert 220V AC voltage into 24V DC voltage.

10. A method for automatically cleaning and purifying magnetic substances in drilling fluid using the system described in any one of claims 1-9, characterized in that: Includes the following steps: S1. During drilling operations, the openings at both ends of the drilling fluid flow channel are respectively connected to a vibrating screen and a drilling fluid tank, and the drilling fluid returned from the well flows in real time within the drilling fluid flow channel. S2. Two sets of magnetic material treatment devices are fixedly installed on the upper part of the drilling fluid flow channel; the start-up time interval of the two sets of devices and the immersion time of the strong magnetic rod in the drilling fluid are set, and the strong magnetic rod is always kept in the drilling fluid flow channel to adsorb magnetic material by the intermittent operation of the two sets of devices. S3. When the two sets of magnetic material processing devices are connected to the power supply and gas source, the device is started by the power supply switch (2). When the moving plate (17) moves downward to the shear plate (6), the lower part of the strong magnetic rod (4) is immersed in the drilling fluid in the drilling fluid channel. After staying for a set time, the moving plate is lifted up. During the lifting process of the moving plate, when the position sensor (13) detects that the moving plate has moved to a quarter of the height from the top of the support and protective bracket (20), it transmits a signal to the main control circuit module (10); after receiving the signal, the main control circuit module (10) feeds back the signal of the recovery tray moving backward to the cylinder B (7), so that the recovery tray (8) moves backward into the area directly below the device, ready for recovery; When the position sensor detects that the recycling tray has moved to the bottom of the device, the signal is fed back to the main control circuit module (10). The main control circuit module transmits the signal to the cylinder A (3) to continue lifting the moving plate (17) to the top of the support and protective bracket (20). At this time, during the lifting process of the strong magnetic rod (4), the magnetic material adsorbed by the strong magnetic rod (4) is removed with the cooperation of the shear plate (6) and the dust ring (5). The removed magnetic material falls onto the recycling tray. The moving plate (17) continues to move upward. When the position sensor (13) detects that the moving plate has moved to the top of the support, it feeds back the signal to the main control circuit module (10). The main control circuit module (10) feeds back the signal of the moving plate hovering at the top of the support and the forward movement of the recovery tray to the cylinder B (7). The recovery tray moves forward to the front end and removes the cleared magnetic material. When the position sensor (13) detects that the recovery tray has moved to the front end, the signal is fed back to the main control circuit module. The main control circuit module feeds back the signal of the moving plate moving downward to the cylinder A (3), so that the strong magnetic rod is immersed in the drilling fluid. The above process of the moving plate moving up and down is repeated to realize the automatic cleaning and purification of magnetic materials in the drilling fluid.

11. The method according to claim 10, characterized in that: During winter construction, the heating element (15) is preset to a temperature of 0-10°C. The power switch (2) starts the system, and the heating regulating valve (14) begins to adjust so that the temperature of the heating element (15) rises to the set value. The temperature sensor (16) detects the internal temperature of the explosion-proof control cabinet in real time and feeds it back to the main control circuit module (10) to realize automatic real-time temperature detection and regulation control, so that the internal temperature of the explosion-proof control cabinet is always kept at the set constant temperature, thus achieving the system's winter outdoor antifreeze and heat preservation function.

12. The method according to claim 10, characterized in that: Set the start-up time interval between the two sets of devices to 5-10 minutes; set the immersion time of the strong magnetic rod in the drilling fluid to 15-20 minutes; and set the moving plate to hover for 5-10 seconds when it reaches the top of the support.

Images