Large-caliber drilling mud filtering device

Abstract

The utility model discloses a large-caliber drilling mud filtering device. The large-caliber drilling mud filtering device comprises a cleaning structure and a steering structure, wherein the cleaning structure and the steering structure are arranged on the two sides in a filtering box; the cleaning structure is used for flushing and cleaning a filtering frame; the filter frame is close to a vertical state, then water in the water tank is conveyed to the high-pressure spray head through the water conveying pipe of the cleaning structure, high-pressure clear water is sprayed out through the high-pressure spray head to wash the filter frame, meanwhile, the pressing block is driven by the motor to rotate, and the pressing block downwards extrudes the rear end of the high-pressure spray head through the pressing plate; through extrusion of a pressing plate and the action of reset elastic force of a spring structure, a high-pressure spray head swings up and down in a spray head groove, the filtering frame is washed and cleaned more completely, and the difficulty and frequency of manual maintenance are reduced; and meanwhile, through automatic steering and cleaning actions, the use efficiency and the operation convenience of the equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of mud filtration technology, and in particular to a large-diameter drilling mud filtration device. Background Technology

[0002] Mud filtration devices are key equipment used in geological drilling, oil and gas extraction, and other engineering projects. They effectively separate solid particles and impurities from the mud generated during drilling through a series of physical methods such as sieving, centrifugation, or pressure filtration. This keeps the mud clean and stable, ensuring drilling efficiency while reducing environmental pollution and extending the service life of drill bits and drilling equipment.

[0003] In large-diameter drilling operations, existing mud filtration devices generally face cleaning and maintenance challenges after completing their filtration tasks. Specifically, the filter screens of these devices are often installed at an angle, and during use, a large amount of mud residue and solid particles accumulate on the screens. Currently, cleaning these screens mainly relies on high-pressure nozzles for rinsing. However, due to the angled installation of the screens, single-sided rinsing is often insufficient to thoroughly remove the dirt from the screens, resulting in poor cleaning performance and affecting the efficiency and lifespan of the filtration device. Utility Model Content

[0004] One objective of this invention is to provide a large-diameter drilling mud filtration device. This invention addresses the problem mentioned in the background that, due to the oblique installation characteristics of the filter screen, single-sided rinsing often fails to thoroughly remove dirt from the filter screen, resulting in poor cleaning performance and affecting the efficiency and lifespan of the filtration device.

[0005] A large-diameter drilling mud filtration device according to an embodiment of the present invention includes a cleaning structure for rinsing and cleaning the filter frame and a steering structure for turning the filter frame, both installed on both sides inside the filter box. The steering structure includes a rack, a gear, and a filter frame. The filter frame is rotatably connected to the inside of the filter box via a rotating shaft. The gear is fixedly connected to one end of the rotating shaft. The rack is movably connected to the outer surface of the filter box via an electric push rod. The cleaning structure includes a high-pressure nozzle, a pressure plate, and a pressure block. Nozzle slots are provided on both sides inside the filter box. The high-pressure nozzle is rotatably connected to the inside of the nozzle slot via a rotating rod. A groove is provided on the lower inner surface of the nozzle slot. A spring structure is provided between the high-pressure nozzle and the groove. The pressure plate is movably connected to the upper part of the nozzle slot. The pressure block is drivenly connected to the output end of a motor. The motor is fixedly connected to the upper part of the nozzle slot.

[0006] Preferably, the pressure block has an elliptical structure. When the longer diameter section of the pressure block presses against the pressure plate, the pressure plate presses against the rear end of the high-pressure nozzle, causing the front end of the high-pressure nozzle to spray upwards. When the longer diameter section of the pressure block is horizontal, the rear end of the high-pressure nozzle loses the pressure of the pressure plate, and the return force of the spring structure causes the rear end of the high-pressure nozzle to tilt upwards, thereby causing the front end of the high-pressure nozzle to spray downwards, thus realizing the up-and-down reciprocating motion of the high-pressure nozzle.

[0007] Preferably, a water tank is fixedly connected to the upper surface of the filter box, and the water tank and the high-pressure nozzle are connected to each other through a water supply pipe. Both the water tank and the upper surface of the filter box are fixedly connected with feed hoppers that facilitate the feeding of mud.

[0008] Preferably, a slide rail is fixedly connected to the outer surface of the filter box, and the rack is movably connected inside the slide rail, with the rack and gear meshing with each other.

[0009] Preferably, a first discharge port is provided on one side surface of the filter box for filtering out larger particles in the slurry.

[0010] Preferably, both sides of the filter box are provided with sliding grooves, and a sliding rod is fixedly connected inside the sliding groove, with the pressure plate slidably connected to the surface of the sliding rod.

[0011] Preferably, a discharge structure is installed in the lower part of the filter box. The discharge structure includes a guide plate and a second discharge port. The guide plate is obliquely fixedly connected to the lower part of the filter box, and a vibration motor is fixedly connected to the lower surface of the guide plate.

[0012] Preferably, a second discharge port for discharging the filtered slurry is provided through the lower part of the other side surface of the filter box.

[0013] The beneficial effects of this utility model are:

[0014] This invention utilizes a cleaning and steering structure. When the filter frame inside the filtration device needs cleaning, the electric push rod of the steering structure shortens, causing the rack and pinion to rotate, ultimately rotating the shaft and filter frame. This brings the filter frame closer to a vertical position. Water from the tank is then delivered to the high-pressure nozzle through the water supply pipe of the cleaning structure. The high-pressure nozzle sprays high-pressure clean water to rinse the filter frame. Simultaneously, the pressure block rotates via a motor, pressing the rear end of the high-pressure nozzle downwards through a pressure plate. The pressure of the pressure plate and the restoring force of the spring structure cause the high-pressure nozzle to swing up and down inside the nozzle slot, achieving a more thorough cleaning of the filter frame and reducing the difficulty and frequency of manual maintenance. Furthermore, the automated steering and cleaning actions improve the equipment's efficiency and ease of operation.

[0015] This invention utilizes a discharge structure to process the filtered slurry. The inclusion of a vibrating motor effectively prevents the viscous slurry from adhering to the surface of the guide plate and causing blockage inside the filter box. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a large-diameter drilling mud filtration device proposed in this utility model.

[0018] Figure 2 This is a cross-sectional view of a large-diameter drilling mud filtration device proposed in this utility model;

[0019] Figure 3 This utility model proposes a large-diameter drilling mud filtration device. Figure 2 Enlarged view of point A in the middle

[0020] In the diagram: 1. Filter box; 2. Water tank; 3. Feed hopper; 4. Steering structure; 401. Electric push rod; 402. Rack; 403. Gear; 404. Slide rail; 405. Rotating shaft; 406. Filter frame; 407. First discharge port; 5. Discharge structure; 501. Guide plate; 502. Vibration motor; 503. Second discharge port; 6. Cleaning structure; 601. Nozzle slot; 602. High-pressure nozzle; 603. Rotating rod; 604. Groove; 605. Spring; 606. Slide groove; 607. Slide rod; 608. Pressure plate; 609. Pressure block; 610. Water supply pipe. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] refer to Figure 1-3A large-diameter drilling mud filtration device includes a cleaning structure 6 installed on both sides inside a filter box 1 for rinsing and cleaning a filter frame 406, and a steering structure 4 for turning the filter frame 406. The steering structure 4 includes a rack 402, a gear 403, and a filter frame 406. The filter frame 406 is rotatably connected inside the filter box 1 via a rotating shaft 405. The gear 403 is fixedly connected to one end of the rotating shaft 405. The rack 402 is movably connected to the outside of the filter box 1 via an electric push rod 401. The surface cleaning structure 6 includes a high-pressure nozzle 602, a pressure plate 608, and a pressure block 609. Both sides of the filter box 1 have nozzle slots 601. The high-pressure nozzle 602 is rotatably connected to the inside of the nozzle slot 601 via a rotating rod 603. A groove 604 is formed on the lower inner surface of the nozzle slot 601. A spring 605 is installed between the high-pressure nozzle 602 and the groove 604. The pressure plate 608 is movably connected to the upper part of the nozzle slot 601. The pressure block 609 is drively connected to the output end of the motor. The motor is fixedly connected... Connected to the upper part of the nozzle slot 601, when the filter frame 406 inside the filter device needs cleaning, the electric push rod 401 of the steering structure 4 is shortened, thereby driving the gear 403 to rotate via the rack 402, ultimately driving the rotating shaft 405 and the filter frame 406 to rotate, making the filter frame 406 frame approach a vertical state. Then, water from the water tank 2 is sent to the high-pressure nozzle 602 through the water supply pipe 610 of the cleaning structure 6, and high-pressure clean water is sprayed out by the high-pressure nozzle 602 to clean the filter frame 406 frame. During rinsing, the pressure block 609 rotates via a motor, and the pressure block 609 presses the rear end of the high-pressure nozzle 602 downward through the pressure plate 608. Through the pressing of the pressure plate 608 and the restoring force of the spring 605, the high-pressure nozzle 602 swings up and down inside the nozzle groove 601, achieving a more thorough rinsing and cleaning of the filter frame 406, reducing the difficulty and frequency of manual maintenance; at the same time, the automated steering and cleaning actions improve the efficiency and ease of operation of the equipment.

[0023] Example 1: The pressure block 609 has an elliptical structure. When the longer diameter section of the pressure block 609 presses against the pressure plate 608, the pressure plate 608 presses against the rear end of the high-pressure nozzle 602, causing the front end of the high-pressure nozzle 602 to spray upwards. When the longer diameter section of the pressure block 609 is horizontal, the rear end of the high-pressure nozzle 602 loses the pressure of the pressure plate 608. The restoring force of the spring 605 structure causes the rear end of the high-pressure nozzle 602 to tilt upwards, thereby causing the front end of the high-pressure nozzle 602 to spray downwards, realizing the up-and-down reciprocating motion of the high-pressure nozzle 602. A water tank 2 is fixedly connected to the upper surface of the filter box 1. The water tank 2 and the high-pressure nozzle 602 are connected together. The two are connected to each other by a water supply pipe 610. The upper surfaces of the water tank 2 and the filter box 1 are both fixedly connected to a feed hopper 3 for easy mud feeding. The outer surface of the filter box 1 is fixedly connected to a slide rail 404. The rack 402 is movably connected inside the slide rail 404. The rack 402 and the gear 403 mesh with each other. One side surface of the filter box 1 is provided with a first discharge port 407 for filtering larger particles in the mud and discharging the material. Both sides of the filter box 1 are provided with a sliding groove 606. The sliding rod 607 is fixedly connected inside the sliding groove 606. The pressure plate 608 is slidably connected to the surface of the sliding rod 607.

[0024] Example 2: A discharge structure 5 is installed in the lower part of the filter box 1. The discharge structure 5 includes a guide plate 501 and a second discharge port 503. The guide plate 501 is obliquely fixedly connected to the lower part of the filter box 1. A vibration motor 502 is fixedly connected to the lower surface of the guide plate 501. A second discharge port 503 is provided through the lower part of the other side surface of the filter box 1 for discharging the filtered slurry. The slurry is discharged through the discharge structure 5. The vibration motor 502 effectively prevents the relatively viscous slurry from adhering to the surface of the guide plate 501 and causing blockage inside the filter box 1.

[0025] In use, the slurry is first added to the filter box 1 through the feed hopper 3. Inside the filter box 1, the slurry undergoes preliminary filtration through the filter frame 406, intercepting larger particles. As the filtration process continues, when a certain amount of solid particles accumulate in the filter frame 406 and cleaning is required, the operator activates the electric push rod 401 of the steering structure 4. The electric push rod 401 shortens, driving the rack 402 to move along the slide rail 404, which in turn rotates the shaft 405 through the gear 403, causing the filter frame 406 to gradually turn towards a near-vertical state for easy cleaning. At the same time, the water supply pipe 610 of the cleaning structure 6 starts working, sending water from the water tank 2 to the high-pressure nozzle 602. Under the synergistic action of the pressure block 609 and the pressure plate 608, the high-pressure nozzle 602 is driven by the motor to rotate the pressure block 609, which squeezes the pressure plate 608, causing the front end of the high-pressure nozzle 602 to... High-pressure water is sprayed upwards to rinse the filter frame 406. As the pressure block 609 continues to rotate until its longer diameter section is in a horizontal position, the rear end of the high-pressure nozzle 602 loses the pressure of the pressure plate 608. Under the restoring force of the spring 605 structure, the front end of the high-pressure nozzle 602 sprays downwards, achieving up-and-down reciprocating motion, thereby cleaning the filter frame 406 more thoroughly. After cleaning, the electric push rod 401 resets, and the filter frame 406 returns to a horizontal filtration state. The filtered mud is guided to the second discharge port 503 through the guide plate 501 of the discharge structure 5. The setting of the vibration motor 502 effectively prevents viscous mud from adhering to the guide plate 501, avoids blockage inside the filter box 1, and ensures the continuous and stable operation of the filtration device. The entire process realizes the automation of filtration, cleaning, and discharge, greatly improving the efficiency and safety of drilling operations.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A large-diameter drilling mud filtration device, characterized in that, The filter box (1) includes a cleaning structure (6) installed on both sides inside the filter box (1) for rinsing and cleaning the filter frame (406) and a steering structure (4) for steering the filter frame (406). The steering structure (4) includes a rack (402), a gear (403), and a filter frame (406). The filter frame (406) is rotatably connected to the inside of the filter box (1) via a rotating shaft (405). The gear (403) is fixedly connected to one end of the rotating shaft (405). The rack (402) is movably connected to the outer surface of the filter box (1) via an electric push rod (401). The cleaning structure (6) includes a high-pressure spray nozzle. The filter box (1) has a head (602), a pressure plate (608), and a pressure block (609). Both sides of the filter box (1) are provided with nozzle slots (601). The high-pressure nozzle (602) is rotatably connected to the inside of the nozzle slot (601) through a rotating rod (603). The lower surface of the nozzle slot (601) is provided with a groove (604). A spring (605) structure is provided between the high-pressure nozzle (602) and the groove (604). The pressure plate (608) is movably connected to the upper part of the nozzle slot (601). The pressure block (609) is driven to the output end of the motor. The motor is fixedly connected to the upper part of the nozzle slot (601).

2. The large-diameter drilling mud filtration device according to claim 1, characterized in that, The pressure block (609) has an elliptical structure. When the longer diameter section of the pressure block (609) presses against the pressure plate (608), the pressure plate (608) presses against the rear end of the high-pressure nozzle (602), causing the front end of the high-pressure nozzle (602) to spray upwards. When the longer diameter section of the pressure block (609) is horizontal, the rear end of the high-pressure nozzle (602) loses the pressure of the pressure plate (608). Through the restoring elasticity of the spring (605) structure, the rear end of the high-pressure nozzle (602) tilts upwards, thereby causing the front end of the high-pressure nozzle (602) to spray downwards, thus realizing the up-and-down reciprocating motion of the high-pressure nozzle (602).

3. The large-diameter drilling mud filtration device according to claim 1, characterized in that, A water tank (2) is fixedly connected to the upper surface of the filter box (1). The water tank (2) and the high-pressure nozzle (602) are connected to each other through a water supply pipe (610). A feed hopper (3) for easy mud feeding is fixedly connected to the upper surfaces of both the water tank (2) and the filter box (1).

4. The large-diameter drilling mud filtration device according to claim 1, characterized in that, The outer surface of the filter box (1) is fixedly connected to a slide rail (404), and the rack (402) is movably connected inside the slide rail (404). The rack (402) and the gear (403) mesh with each other.

5. A large-diameter drilling mud filtration device according to claim 1, characterized in that, The filter box (1) has a first discharge port (407) through which larger particles in the slurry are filtered and discharged.

6. A large-diameter drilling mud filtration device according to claim 1, characterized in that, The filter box (1) has sliding grooves (606) on both sides. A sliding rod (607) is fixedly connected inside the sliding groove (606), and the pressure plate (608) is slidably connected to the surface of the sliding rod (607).

7. A large-diameter drilling mud filtration device according to claim 1, characterized in that, The filter box (1) is equipped with a discharge structure (5) in its lower inner part. The discharge structure (5) includes a guide plate (501) and a second discharge port (503). The guide plate (501) is obliquely fixedly connected to the lower inner part of the filter box (1). A vibration motor (502) is fixedly connected to the lower surface of the guide plate (501).

8. A large-diameter drilling mud filtration device according to claim 1, characterized in that, A second discharge port (503) for discharging the filtered slurry is provided through the lower part of the other side surface of the filter box (1).

Images