A petroleum drilling fluid filtration device

Abstract

The utility model relates to the field of oil drilling, especially relate to a kind of oil drilling fluid filtering device, including filter cartridge and feed cylinder, the upper end of filter cartridge is equipped with the limiting slot around filter cartridge one round, the lower end inner wall of limiting slot is equipped with the four clamping slots around limiting slot one round at equal intervals, the inner wall of filter cartridge is equipped with the fixed ring, filter screen and filter barrel distributed up and down, the outer wall of filter screen is fixedly connected with the four clamping blocks two around filter screen one round at equal intervals, clamping block two is compatible with clamping slot, fixed ring is compatible with limiting slot, the lower end of fixed ring is fixedly connected with the four clamping blocks one around fixed ring one round at equal intervals, the utility model is equipped with filter screen and filter cartridge structure, can be fixed to filter screen by feed cylinder cooperation fixed ring, only need to disassemble feed cylinder to cancel the limiting fixing of filter screen, the replacement and maintenance of filter screen are convenient, the filter barrel of screw connection cooperation limiting frame can be disassembled conveniently while guaranteeing the stability of filter barrel, the maintenance and cleaning of the internal structure of filter cartridge are convenient.

Description

Technical Field

[0001] This utility model belongs to the field of oil drilling, and specifically relates to an oil drilling fluid filtration device. Background Technology

[0002] Oil drilling fluid filtration devices are key equipment used in drilling operations to remove solid particles, such as drill cuttings and sand, from drilling fluid. Their function is to maintain the properties of drilling fluid, such as density, viscosity, and lubricity, to ensure drilling efficiency, wellbore stability, and equipment lifespan.

[0003] In traditional conventional oil drilling fluid filtration systems, the filter screen and filter canister inevitably become clogged with impurities during long-term use, leading to a decrease in filtration efficiency. Therefore, regular disassembly and cleaning of the filter screen and filter canister are necessary. However, existing conventional oil drilling fluid filtration systems present many inconveniences in terms of disassembly and cleaning of the filter screen and filter canister. The filter screen and filter canister are usually fixed to the main body of the filtration system using traditional connection methods such as bolts and buckles. Disassembly requires specialized tools, making the operation cumbersome and consuming a lot of time and labor costs. On the other hand, during the installation process, the sealing ring may be misaligned, affecting the sealing effect and potentially causing drilling fluid leakage. This not only pollutes the working environment but may also threaten the health of operators, making it difficult for operators to clean and maintain the system, thus affecting the working efficiency of the filtration system. Utility Model Content

[0004] To overcome the problem that the filter plates and filter cartridges of oil drilling fluid filtration devices are inconvenient to disassemble and clean during use, thus affecting work efficiency, an oil drilling fluid filtration device is proposed.

[0005] The technical solution of this utility model is as follows: a petroleum drilling fluid filtration device, comprising a filter cylinder and a feed cylinder. The upper end of the filter cylinder has a limiting groove surrounding it. The lower inner wall of the limiting groove has four slots equidistantly arranged around it. The inner wall of the filter cylinder has vertically distributed fixing rings, a filter screen, and a filter barrel. The outer wall of the filter screen is fixed with four locking blocks equidistantly arranged around it. The locking blocks mate with the slots, and the fixing rings mate with the limiting grooves. Four locking blocks are fixedly attached to the lower end of the filter cylinder, which are equidistant from each other around the fixing ring. The lower end of the locking block is attached to the upper end of the locking block. A feed cylinder is installed at the upper end of the filter cylinder, and the lower end of the feed cylinder is attached to the upper end of the fixing ring. A support plate is fixedly attached to the inner wall of the filter cylinder. The support plate is located below the filter screen. The inner wall of the support plate is threaded. The upper outer wall of the filter cylinder is threaded. The filter cylinder is threaded to the inner wall of the support plate. A limit bracket is installed at the lower end of the support plate. The inner wall of the limit bracket is attached to the outer wall of the filter cylinder.

[0006] Furthermore, a discharge cylinder is fixedly connected to the lower end of the filter cylinder, a support frame is fixedly connected to the lower end of the discharge cylinder, and a vibration motor is fixedly connected to the outer wall of the discharge cylinder.

[0007] Furthermore, four fixed blocks 2 are fixedly connected to the upper outer wall of the filter cylinder at equal intervals around the filter cylinder, and a slider is fixedly connected to one end of each fixed block 2 that is close to the other.

[0008] Furthermore, four L-shaped sliding grooves are provided on the lower outer wall of the feed cylinder, which are equidistant from each other around the feed cylinder and are adapted to the slider.

[0009] Furthermore, a fixing block 1 is fixed to the outer wall of the filter cylinder. The fixing block 1 is located between two adjacent fixing blocks 2, and a screw hole 1 is opened through the upper end of the fixing block 1.

[0010] Furthermore, a fixing block three is fixedly connected to the outer wall of the feed cylinder, and a screw hole two is opened through the upper end of the fixing block three, with a bolt connected to the internal thread of the screw hole two.

[0011] Furthermore, screw hole one corresponds to screw hole two one-to-one, the bolt passes through screw hole two and is threaded into screw hole one, and the inner wall of the feed cylinder is fixed with guide plates and flow equalization grids distributed vertically.

[0012] Furthermore, a second fixing groove is provided at the lower end of the feed cylinder, which surrounds the feed cylinder, and a first fixing groove is provided at the upper end of the fixing ring, which surrounds the second fixing groove. A sealing ring is provided between the first fixing groove and the second fixing groove.

[0013] The beneficial effects of this utility model are as follows: the slot can limit the second card block, thereby limiting the filter screen to the inner wall of the filter cylinder. The fixing ring can limit the filter screen. The first card block and the second card block can be attached and pressed together to improve the stability of the filter screen during operation. The lower end of the feed cylinder is attached and pressed together with the fixing ring to fix the fixing ring and the filter screen. The filter cylinder can be fixed to the inner wall of the support plate by the threads opened on the filter cylinder and the support plate. The limiting frame can support and limit the filter cylinder, thereby improving the stability of the filter cylinder during operation. Compared with the existing oil drilling fluid filtration device, the added filter screen and filter cylinder structure can fix the filter screen by the feed cylinder and the fixing ring. Only the feed cylinder needs to be removed to eliminate the limiting and fixing of the filter screen, which is convenient for the replacement and maintenance of the filter screen. The threaded filter cylinder and the limiting frame can facilitate the disassembly of the filter cylinder while ensuring its stability, thereby improving the convenience of maintenance and cleaning of the internal structure of the filter cylinder. Attached Figure Description

[0014] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0015] Figure 2 The diagram shown is a three-dimensional structural disassembly diagram of this utility model;

[0016] Figure 3 The diagram shows a three-dimensional structure of the filter cylinder, slot, limiting groove, fixing block one, fixing block two and slider of this utility model.

[0017] Figure 4 The diagram shown is a three-dimensional disassembled view of the feed cylinder, guide plate, flow equalization grid and sealing ring of this utility model.

[0018] Figure 5 The diagram shown is a three-dimensional disassembled view of the fixing ring, filter screen, support plate, limiting frame and filter barrel of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Filter cylinder; 2. Vibrating motor; 3. Support frame; 4. Discharge cylinder; 5. Feed cylinder; 6. Slot; 7. Limiting slot; 8. Fixing block one; 9. Screw hole one; 10. Bolt; 11. Fixing block two; 12. Sliding block; 13. Fixing ring; 14. Slot one; 15. Filter screen; 16. Slot two; 17. Fixing slot one; 18. Support plate; 19. Filter barrel; 20. Limiting frame; 21. Guide plate; 22. Flow equalization grid; 23. Slide groove; 24. Fixing slot two; 25. Sealing ring; 26. Fixing block three; 27. Screw hole two. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-5 This utility model provides an embodiment: an oil drilling fluid filtration device, including a filter cylinder 1 and a feed cylinder 5. The upper end of the filter cylinder 1 has a limiting groove 7 surrounding the filter cylinder 1. The lower inner wall of the limiting groove 7 has four slots 6 equidistantly surrounding the limiting groove 7. The inner wall of the filter cylinder 1 has a fixing ring 13, a filter screen 15, and a filter barrel 19 distributed vertically. The outer wall of the filter screen 15 is fixed with four locking blocks 16 equidistantly surrounding the filter screen 15. The locking blocks 16 are adapted to the slots 6. The fixing ring 13 is adapted to the limiting groove 7. The lower end of the fixing ring 13... Four locking blocks 14 are fixedly connected to the fixed ring 13 at equal intervals. The lower end of the locking block 14 is attached to the upper end of the locking block 16. The upper end of the filter cylinder 1 is equipped with a feed cylinder 5. The lower end of the feed cylinder 5 is attached to the upper end of the fixed ring 13. The inner wall of the filter cylinder 1 is fixedly connected with a support plate 18. The support plate 18 is located below the filter screen 15. The inner wall of the support plate 18 is threaded. The upper outer wall of the filter barrel 19 is threaded. The filter barrel 19 is threaded to the inner wall of the support plate 18. The lower end of the support plate 18 is equipped with a limit bracket 20. The inner wall of the limit bracket 20 is attached to the outer wall of the filter barrel 19.

[0022] The second card block 16 can be limited by the slot 6, thereby limiting the filter screen 15 to the inner wall of the filter cylinder 1. The fixing ring 13 can limit the filter screen 15. The first card block 14 can be attached to and pressed against the second card block 16 to improve the stability of the filter screen 15 during operation. The lower end of the feed cylinder 5 is attached to and pressed against the fixing ring 13 to fix the fixing ring 13 and the filter screen 15, and facilitate the disassembly of the filter screen 15. The filter barrel 19 can be fixed to the inner wall of the support plate 18 by the threads on the filter barrel 19 and the support plate 18. The limiting frame 20 can support and limit the filter barrel 19, thereby improving the stability of the filter barrel 19 during operation and facilitating the disassembly of the filter barrel 19.

[0023] Please see Figures 2-3 In this embodiment, a discharge cylinder 4 is fixedly connected to the lower end of the filter cylinder 1, and a support frame 3 is fixedly connected to the lower end of the discharge cylinder 4. A vibration motor 2 is fixedly connected to the outer wall of the discharge cylinder 4. During use, the support frame 3 can support the discharge cylinder 4, making it convenient to collect the filtered solution from below. The vibration motor 2 can drive the discharge cylinder 4 and the filter cylinder 1 to vibrate, improving the filtration speed and efficiency. Four fixing blocks 11 are fixedly connected to the upper outer wall of the filter cylinder 1 at equal intervals around the filter cylinder 1. A slider 12 is fixedly connected to one end of the fixing blocks 11 that is close to each other. During use, the slider 12 installed on the fixing blocks 11 can be used to easily install and fix the feed cylinder 5, thereby improving the ease of disassembling the feed cylinder 5 and facilitating the cleaning and replacement of the filter screen 15 and the filter barrel 19.

[0024] Please see Figures 3-4 In this embodiment, four sliding grooves 23 are provided on the lower outer wall of the feed cylinder 5, which are equidistantly arranged around the feed cylinder 5. The sliding grooves 23 are L-shaped and are adapted to the slider 12. In use, the feed cylinder 5 can be limited to the upper end of the filter cylinder 1 by the sliding grooves 23 and the slider 12, and can be rotated and disassembled. A fixing block 8 is fixedly connected to the outer wall of the filter cylinder 1. The fixing block 8 is located between two adjacent fixing blocks 11. A screw hole 9 is provided through the upper end of the fixing block 8. In use, the installation position of the feed cylinder 5 can be conveniently positioned by the screw hole 9 on the fixing block 11.

[0025] Please see Figures 4-5In this embodiment, a fixing block 26 is fixedly connected to the outer wall of the feed cylinder 5. A screw hole 27 is provided through the upper end of the fixing block 26. A bolt 10 is threaded into the screw hole 27. During use, the bolt 10 can limit and fix the feed cylinder 5 to the upper end of the filter cylinder 1, improving the stability of the feed cylinder 5 during operation. Screw holes 1 and 27 correspond one-to-one. The bolt 10 passes through the screw hole 27 and is threaded into the screw hole 9. The inner wall of the feed cylinder 5 is fixedly connected with vertically distributed guide plates 21 and flow equalization grids 22. During use, the guide plates 21 can guide the solution entering the feed cylinder 5. The solution is uniformly fed into the feed cylinder 5. The flow equalization grid 22 can further improve the uniformity of the solution flow, so that the solution is evenly distributed on the upper end of the filter screen 15, thereby improving the filtration efficiency. The lower end of the feed cylinder 5 is provided with a second fixing groove 24 that surrounds the feed cylinder 5. The upper end of the fixing ring 13 is provided with a first fixing groove 17 that surrounds the second fixing groove 24. A sealing ring 25 is provided between the first fixing groove 17 and the second fixing groove 24. During use, the sealing ring 25 can be limited and fixed by the first fixing groove 17 and the second fixing groove 24. The sealing ring 25 can be easily disassembled and replaced to ensure good sealing between the feed cylinder 5 and the filter cylinder 1.

[0026] During disassembly, first, rotate bolt 10 to remove it. Then, rotate the feed cylinder 5 clockwise so that the slider 12 aligns with the lower opening of the slide groove 23. Pull the feed cylinder 5 upwards to disassemble it. Next, remove the sealing ring 25 from the fixing groove 24. After removing the fixing ring 13 upwards, the filter screen 15 can be disassembled. After disassembling the filter screen 15, rotate the filter bucket 19 to disassemble the filter screen 15 and the filter bucket 19 for cleaning. Then, align the replaced or cleaned filter bucket 19 with the center of the support plate 18, press the filter bucket 19 downwards, and rotate it. Connect the filter barrel 19 to the support plate 18 by thread. Align the second locking block 16 with the slot 6 and press down on the filter screen 15 to move the second locking block 16 to the inner wall of the bottom of the slot 6. Align the first locking block 14 with the slot 6 and press down on the fixing ring 13 to make the fixing ring 13 and the first locking block 14 fit together and press the filter screen 15 tightly. Finally, align the lower opening of the slide groove 23 with the slider 12 and press down on the feed cylinder 5 to make the slider 12 fit against the inner wall of the upper end of the slide groove 23. Then, rotate the feed cylinder 5 counterclockwise to align the first screw hole 9 with the second screw hole 27 and thread the bolt 10 through the second screw hole 27 into the first screw hole 9.

[0027] Through the above steps, the slot 6 can limit the second card block 16, thereby limiting the filter screen 15 to the inner wall of the filter cylinder 1. The fixing ring 13 can limit the filter screen 15. The first card block 14 attaches to and presses the second card block 16, which can improve the stability of the filter screen 15 during operation. The lower end of the feed cylinder 5 attaches to and presses the fixing ring 13, thereby fixing the fixing ring 13 and the filter screen 15. The threads on the filter barrel 19 and the support plate 18 can fix the filter barrel 19 to the inner wall of the support plate 18. The limiting frame 20 can bear and limit the filter barrel 19, thereby improving the stability of the filter barrel 19 during operation. This solves the problem that the filter plate and filter cylinder are not easy to disassemble and clean during use of the oil drilling fluid filtration device, thus affecting the working efficiency.

Claims

1. An oil drilling fluid filtration device, comprising a filter cylinder (1) and a feed cylinder (5), characterized in that: The upper end of the filter cylinder (1) is provided with a limiting groove (7) that surrounds the filter cylinder (1) for one circumference. The lower end of the limiting groove (7) is provided with four slots (6) that are equidistantly arranged around the limiting groove (7) for one circumference. The inner wall of the filter cylinder (1) is provided with a fixing ring (13), a filter screen (15) and a filter barrel (19) distributed vertically. The outer wall of the filter screen (15) is fixed with four second-order locking blocks (16) that are equidistantly arranged around the filter screen (15) for one circumference. The second-order locking blocks (16) are adapted to the slots (6). The fixing ring (13) is adapted to the limiting groove (7). The lower end of the fixing ring (13) is fixed with four first-order locking blocks that are equidistantly arranged around the fixing ring (13) for one circumference. (14) The lower end of the first card block (14) is attached to the upper end of the second card block (16). The upper end of the filter cylinder (1) is equipped with a feed cylinder (5). The lower end of the feed cylinder (5) is attached to the upper end of the fixing ring (13). The inner wall of the filter cylinder (1) is fixed with a support plate (18). The support plate (18) is located on the lower side of the filter screen (15). The inner wall of the support plate (18) is threaded. The upper outer wall of the filter barrel (19) is threaded. The filter barrel (19) is threaded to the inner wall of the support plate (18). The lower end of the support plate (18) is equipped with a limit frame (20). The inner wall of the limit frame (20) is attached to the outer wall of the filter barrel (19).

2. The oil drilling fluid filtration device according to claim 1, characterized in that: The lower end of the filter cylinder (1) is fixedly connected to the discharge cylinder (4), the lower end of the discharge cylinder (4) is fixedly connected to the support frame (3), and the outer wall of the discharge cylinder (4) is fixedly connected to the vibration motor (2).

3. The oil drilling fluid filtration device according to claim 2, characterized in that: Four fixed blocks (11) are fixedly connected to the upper outer wall of the filter cylinder (1) at equal intervals around the filter cylinder (1), and a slider (12) is fixedly connected to one end of the fixed blocks (11) that is close to each other.

4. The oil drilling fluid filtration device according to claim 3, characterized in that: The lower outer wall of the feed cylinder (5) is provided with four grooves (23) that are equidistantly arranged around the feed cylinder (5). The grooves (23) are L-shaped and are adapted to the slider (12).

5. The oil drilling fluid filtration device according to claim 4, characterized in that: A fixing block 1 (8) is fixed to the outer wall of the filter cylinder (1). The fixing block 1 (8) is located between two adjacent fixing blocks 2 (11). A screw hole 1 (9) is opened through the upper end of the fixing block 1 (8).

6. The oil drilling fluid filtration device according to claim 5, characterized in that: The outer wall of the feed cylinder (5) is fixed with a fixing block three (26), and the upper end of the fixing block three (26) is provided with a screw hole two (27), and a bolt (10) is connected to the screw hole two (27) by internal thread.

7. The oil drilling fluid filtration device according to claim 6, characterized in that: Screw hole 1 (9) corresponds to screw hole 2 (27) one by one. Bolt (10) passes through screw hole 2 (27) and is threaded into screw hole 1 (9). The inner wall of feed cylinder (5) is fixed with guide plates (21) and flow equalization grid (22) distributed vertically.

8. The oil drilling fluid filtration device according to claim 7, characterized in that: The lower end of the feed cylinder (5) is provided with a second fixing groove (24) that surrounds the feed cylinder (5), and the upper end of the fixing ring (13) is provided with a first fixing groove (17) that surrounds the second fixing groove (24). A sealing ring (25) is provided between the first fixing groove (17) and the second fixing groove (24).

Images