Oil exploitation drilling fluid centrifugal separation device

Abstract

The utility model discloses an oil exploitation drilling fluid centrifugal separation device which comprises a base, a cylinder is rotationally connected into the base, a rotating ring is rotationally connected to the upper surface of the interior of the cylinder, a plurality of connecting rods are fixed to the bottom of the rotating ring, a circular plate is fixed to the bottom ends of the connecting rods, and circular rods are fixed into the circular plate. A filter screen is fixed between every two connecting rods, a first motor is fixed to the front surface of the base, and an output shaft of the first motor penetrates through the base to be fixedly connected with the outer side wall of the cylinder. According to the centrifugal separation device for the oil exploitation drilling fluid, the cleaning mechanism is arranged, a second motor is started, the second motor drives a round rod to rotate, and the round rod drives a round plate, a connecting rod, a filter screen and a rotating ring to rotate, so that the internal drilling fluid can be centrifugally separated, and the round rod rotates to enable an arc-shaped plate, a movable ring, a fixed rod, a fixed ring and brush wires to move upwards; therefore, the brush wires can clean the filter screen and prevent the filter screen from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling fluid separation, in particular to a centrifugal separation device for oil production drilling fluid. Background Art

[0002] Drilling fluid is the blood of drilling, also known as drilling flushing fluid. Drilling fluid can flush out the debris in the borehole and cool the drill bit, thus protecting the drill bit. The existing drilling fluid recovery is directly carried out in the sedimentation tank, which takes a long time and has poor effect. In addition, the sedimentation tank requires multi-stage sedimentation and occupies a large area.

[0003] Therefore, in the prior art, a centrifugal dehydrator is often used to treat drilling fluid, and centrifugal force is used to separate the mud and liquid in the drilling fluid. Although the separation effect is good, from a practical point of view, during the operation of the centrifugal dehydrator, the mud will block the filtering mechanism, thereby reducing the separation speed of the drilling fluid and affecting the filtering effect.

[0004] Therefore, a centrifugal separation device for oil drilling fluid is needed to solve the problem in the prior art that during operation of the centrifugal dehydration device, the mud blocks the filter mechanism and reduces the separation speed of the drilling fluid. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a centrifugal separation device for oil drilling fluid, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A centrifugal separation device for oil drilling fluid, comprising a base, a cylinder rotatably connected inside the base, a swivel rotatably connected to the inner upper surface of the cylinder, a plurality of connecting rods fixed to the bottom of the swivel, a circular plate fixed to the bottom end of the connecting rod, a circular rod fixed inside the circular plate, a filter screen fixed between each of the plurality of connecting rods, a first motor fixed to the front surface of the base, the output shaft of the first motor passes through the base and the outer wall of the cylinder and is fixedly connected, a second motor fixed to the bottom of the cylinder, the output shaft of the second motor passes through the cylinder and the bottom of the circular rod and is fixedly connected, a leakage pipe is fixed to the bottom of the cylinder, a feed port is fixed to the top of the cylinder, a cleaning mechanism is provided inside the filter screen, the cleaning mechanism comprises a fixed ring, a movable ring, two threaded plates, two fixed rods and a brush wire, a pushing mechanism is provided inside the movable ring, the pushing mechanism comprises two movable rods, two push rods, two clamping blocks, two pull ropes and two pressure blocks.

[0007] Preferably, the internal sliding connection of the fixed rod is connected to a limiting rod, the top of the limiting rod is fixedly connected to the inner upper surface of the cylinder, the movable ring is sleeved on the outside of the round rod, the two ends of the fixed rod are respectively fixedly connected to the outer wall of the movable ring and the inner wall of the fixed ring, the brush wire is fixed to the outer wall of the fixed ring, the threaded plate is located inside the movable ring, and the threaded plate and the outer wall of the round rod are screwed.

[0008] Preferably, the interior of the movable ring is slidably connected to the two movable rods, the interior of the movable ring is provided with a circular hole located on the outside of the movable rod, the opposite sides of the two movable rods are fixedly connected to the two threaded plates respectively, a top block is fixed to the end of the movable rod away from the threaded plate, and a first spring is sleeved on the outside of the movable rod, and the first spring is located inside the circular hole.

[0009] Preferably, two through holes are provided on the top of the movable ring, the inner inner wall of the through hole and the outer wall of the push rod are slidingly connected, an annular groove is provided on the outer side of the through hole, a circular ring is fixed on the outer wall of the push rod, the circular ring is located inside the annular groove, and a second spring is provided on the outer side of the push rod above the circular ring.

[0010] Preferably, the inner wall of the perforation and the outer wall of the pressure block are slidingly connected, a clamping hole is provided on the outer wall of the push rod, a storage hole is provided on the inner wall of the perforation, a third spring is fixed inside the storage hole, the other end of the third spring is fixedly connected to an end of the clamping block away from the clamping hole, and the two ends of the pull rope are respectively fixedly connected to an end of the clamping block close to the third spring and the outer wall of the pressure block.

[0011] Preferably, magnetic rings are fixed to the bottom of the movable ring and the top of the circular plate, and the suction force between the two magnetic rings is greater than the sum of the elastic forces between the two first springs and the two second springs.

[0012] The utility model provides a centrifugal separation device for oil drilling fluid. Compared with the existing technology, it has the following advantages:

[0013] 1. The oil drilling fluid centrifugal separation device is provided with a cleaning mechanism. When the second motor is started, the second motor rotates the round rod, and the round rod rotates the round plate, connecting rod, filter screen and rotating ring, so that the internal drilling fluid can be centrifuged. The rotation of the round rod causes the arc plate, movable ring, fixed rod, fixed ring and brush wire to move upward, so that the brush wire can clean the filter screen to prevent the filter screen from being blocked.

[0014] 2. The oil drilling fluid centrifugal separation device is provided with a jacking mechanism. After the cleaning mechanism moves to the upper side, the cylinder squeezes the pressure block, the pressure block pulls the pull rope, and the pull rope pulls the clamping block, so that the second spring pushes the circular ring and the push rod downward, and the first spring pushes the push block, the movable rod and the threaded plate to move, so that the threaded plate and the circular rod are separated, and the cleaning mechanism moves downward. Then the two magnetic rings attract each other, the circular plate squeezes the push rod, the push rod squeezes the push block, and the push block brings the movable rod and the threaded plate back to their original position. At the same time, the clamping block is clamped into the clamping hole, so that the next cleaning can be carried out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the cylinder in the present invention;

[0017] Figure 3 This is a schematic cross-sectional view of the transfer ring and the circular plate of the present invention;

[0018] Figure 4 This is a schematic cross-sectional view of the cleaning mechanism of the present invention;

[0019] Figure 5 For this utility model Figure 4 Schematic diagram of the structure at A in the middle;

[0020] Figure 6 For this utility model Figure 5 Schematic diagram of the structure at point B.

[0021] In the figure: 1. base; 2. leakage pipe; 3. cylinder; 4. feed port; 5. second motor; 6. round rod; 7. round plate; 8. connecting rod; 9. swivel; 10. cleaning mechanism; 11. brush wire; 12. fixed ring; 13. movable ring; 14. fixed rod; 15. limit rod; 16. threaded plate; 17. perforation; 18. movable rod; 19. first spring; 20. round hole; 21. ring groove; 22. round ring; 23. ejector rod; 24. second spring; 25. pull rope; 26. ejector block; 27. pressure block; 28. storage hole; 29. ​​third spring; 30. clamping block; 31. clamping hole; 32. first motor; 33. filter screen; 34. ejector mechanism; 35. magnetic ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-6 The utility model provides a technical solution: a centrifugal separation device for oil drilling fluid, including a base 1, an internal rotation connection cylinder 3 of the base 1, an internal upper surface of the cylinder 3 is rotatably connected with a swivel 9, a plurality of connecting rods 8 are fixed at the bottom of the swivel 9, a circular plate 7 is fixed at the bottom end of the connecting rod 8, a circular rod 6 is fixed inside the circular plate 7, and a filter screen 33 is fixed between each of the plurality of connecting rods 8, a first motor 32 is fixed on the front surface of the base 1, an output shaft of the first motor 32 passes through the base 1 and is fixedly connected to the outer wall of the cylinder 3, a second motor 5 is fixed at the bottom of the cylinder 3, an output shaft of the second motor 5 passes through the cylinder 3 and is fixedly connected to the bottom of the circular rod 6, a leakage pipe 2 is fixed at the bottom of the cylinder 3, a feed port 4 is fixed at the top of the cylinder 3, a cleaning mechanism 10 is provided inside the filter screen 33, the cleaning mechanism 10 includes a fixed ring 12, a movable ring 13, two threaded plates 16, two fixed rods 14 and a brush wire 11, and a top motor is provided inside the movable ring 13 Structure 34, the pushing mechanism 34 includes two moving rods 18, two push rods 23, two blocks 30, two pull ropes 25 and two pressure blocks 27. The internal sliding connection of the fixed rod 14 is the limit rod 15. The top of the limit rod 15 is fixedly connected to the inner upper surface of the cylinder 3. The moving ring 13 is sleeved on the outside of the round rod 6. The two ends of the fixed rod 14 are respectively fixedly connected to the outer side wall of the moving ring 13 and the inner side wall of the fixed ring 12. The brush 11 is fixed to the outer side wall of the fixed ring 12. The patterned plate 16 is located inside the movable ring 13, and the threaded plate 16 is screwed to the outer wall of the round rod 6. The second motor 5 is started, and the second motor 5 drives the round rod 6 to rotate. The round rod 6 drives the circular plate 7, the connecting rod 8, the filter 33 and the rotating ring 9 to rotate, so that the internal drilling fluid can be centrifuged. The rotation of the round rod 6 causes the threaded plate 16, the movable ring 13, the fixed rod 14, the fixed ring 12 and the brush 11 to move upward, so that the brush 11 can clean the filter 33 to prevent the filter 33 from being blocked.

[0024] Furthermore, the interior of the moving ring 13 is slidably connected to two moving rods 18, and a circular hole 20 is opened inside the moving ring 13 on the outside of the moving rod 18. The opposite sides of the two moving rods 18 are fixedly connected to the two threaded plates 16 respectively. A top block 26 is fixed to the end of the moving rod 18 away from the threaded plate 16. A first spring 19 is sleeved on the outside of the moving rod 18. The first spring 19 is located inside the circular hole 20. Two through holes 17 are opened on the top of the moving ring 13. The inside of the through holes 17 is fixed to the top of the moving ring 13. The side wall and the outer wall of the push rod 23 are slidably connected, the outer side of the through hole 17 is provided with a ring groove 21, the outer side wall of the push rod 23 is fixed with a ring 22, the ring 22 is located inside the ring groove 21, the outer side of the push rod 23 is located above the ring 22 and is sleeved with a second spring 24, the inner side wall of the through hole 17 and the outer side wall of the pressure block 27 are slidably connected, the outer side wall of the push rod 23 is provided with a card hole 31, the inner side wall of the through hole 17 is provided with a receiving hole 28, the inner side wall of the receiving hole 28 is fixed with a third spring 29, the third spring The other end of the spring 29 is fixedly connected to the end of the card block 30 away from the card hole 31, and the two ends of the pull rope 25 are respectively fixedly connected to the end of the card block 30 close to the third spring 29 and the outer wall of the pressure block 27. The bottom of the movable ring 13 and the top of the circular plate 7 are fixed with a magnetic ring 35. The suction force between the two magnetic rings 35 is greater than the sum of the elastic forces between the two first springs 19 and the two second springs 24. After the cleaning mechanism 10 moves to the upper side, the cylinder 3 squeezes the pressure block 27, and the pressure block 27 pulls the pull rope 25, and the pull rope 25 pulls the clamping block 30, so that the second spring 24 pushes the circular ring 22 and the push rod 23 to move downward, and the first spring 19 pushes the push block 26, the movable rod 18 and the threaded plate 16 to move, so that the threaded plate 16 and the circular rod 6 are separated, and the cleaning mechanism 10 moves downward. Then the two magnetic rings 35 attract each other, the circular plate 7 squeezes the push rod 23, and the push rod 23 squeezes the push block 26. The push block 26 brings the movable rod 18 and the threaded plate 16 back to their original position, and the clamping block 30 is clamped into the clamping hole 31, so that the next cleaning can be carried out.

[0025] During operation, the second motor 5 is started, and the second motor 5 drives the round rod 6 to rotate, and the round rod 6 drives the round plate 7, the connecting rod 8, the filter 33 and the rotating ring 9 to rotate, so that the internal drilling fluid can be centrifuged. The rotation of the round rod 6 causes the threaded plate 16, the movable ring 13, the fixed rod 14, the fixed ring 12 and the brush wire 11 to move upward, so that the brush wire 11 can clean the filter 33 to prevent the filter 33 from being blocked. After the cleaning mechanism 10 moves to the upper side, the cylinder 3 squeezes the pressure block 27, and the pressure block 27 pulls the pull rope 25. The pull rope 25 pulls the card block 30, so that the second spring 24 pushes the circular ring 22 and the push rod 23 to move downward, and the first spring 19 pushes the push block 26, the movable rod 18 and the threaded plate 16 to move, so that the threaded plate 16 and the circular rod 6 are separated, and the cleaning mechanism 10 moves downward. Then the two magnetic rings 35 attract each other, the circular plate 7 squeezes the push rod 23, and the push rod 23 squeezes the push block 26. The push block 26 brings the movable rod 18 and the threaded plate 16 back to their original position, and at the same time the card block 30 is snapped into the card hole 31, so that the next cleaning can be carried out.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal separation device for oil drilling fluid, comprising a base (1), characterized in that: The interior of the base (1) is rotatably connected to the cylinder (3), and the inner upper surface of the cylinder (3) is rotatably connected to a rotating ring (9). A plurality of connecting rods (8) are fixed to the bottom of the rotating ring (9), and a circular plate (7) is fixed to the bottom end of the connecting rod (8). A circular rod (6) is fixed to the inside of the circular plate (7). Filters (33) are fixed between the plurality of connecting rods (8). A first motor (32) is fixed to the front surface of the base (1), and the output shaft of the first motor (32) passes through the base (1) and is fixedly connected to the outer wall of the cylinder (3). A second motor (5) is fixed to the bottom of the cylinder (3), and the output shaft of the second motor (5) is fixed to the bottom of the cylinder (3). The output shaft passes through the bottom of the cylinder (3) and the round rod (6) and is fixedly connected. A leakage pipe (2) is fixed to the bottom of the cylinder (3), and a feed port (4) is fixed to the top of the cylinder (3). A cleaning mechanism (10) is provided inside the filter screen (33). The cleaning mechanism (10) includes a fixed ring (12), a movable ring (13), two threaded plates (16), two fixed rods (14) and a brush wire (11). A pushing mechanism (34) is provided inside the movable ring (13). The pushing mechanism (34) includes two movable rods (18), two push rods (23), two clamping blocks (30), two pull ropes (25) and two pressure blocks (27).

2. The centrifugal separation device for oil drilling fluid according to claim 1, characterized in that: The fixed rod (14) is internally slidably connected to a limiting rod (15), the top of the limiting rod (15) is fixedly connected to the inner upper surface of the cylinder (3), the movable ring (13) is sleeved on the outer side of the round rod (6), the two ends of the fixed rod (14) are respectively fixedly connected to the outer side wall of the movable ring (13) and the inner side wall of the fixed ring (12), the brush filament (11) is fixed to the outer side wall of the fixed ring (12), the threaded plate (16) is located inside the movable ring (13), and the threaded plate (16) is screwed to the outer side wall of the round rod (6).

3. The centrifugal separation device for oil drilling fluid according to claim 2, characterized in that: The interior of the moving ring (13) is slidably connected to the two moving rods (18), and a circular hole (20) is opened inside the moving ring (13) on the outside of the moving rod (18). The opposite sides of the two moving rods (18) are fixedly connected to the two threaded plates (16) respectively. A top block (26) is fixed to one end of the moving rod (18) away from the threaded plate (16). A first spring (19) is sleeved on the outside of the moving rod (18), and the first spring (19) is located inside the circular hole (20).

4. The centrifugal separation device for oil drilling fluid according to claim 3, characterized in that: Two through holes (17) are provided on the top of the movable ring (13), and the inner side walls of the through holes (17) are slidably connected to the outer side walls of the push rod (23). An annular groove (21) is provided on the outer side of the through hole (17), and a circular ring (22) is fixed to the outer side wall of the push rod (23). The circular ring (22) is located inside the annular groove (21), and a second spring (24) is sleeved on the outer side of the push rod (23) above the circular ring (22).

5. The centrifugal separation device for oil drilling fluid according to claim 4, characterized in that: The inner side wall of the through hole (17) and the outer side wall of the pressure block (27) are slidably connected, the outer side wall of the push rod (23) is provided with a clamping hole (31), the inner side wall of the through hole (17) is provided with a receiving hole (28), a third spring (29) is fixed inside the receiving hole (28), the other end of the third spring (29) is fixedly connected to the end of the clamping block (30) away from the clamping hole (31), and the two ends of the pull rope (25) are respectively fixedly connected to the end of the clamping block (30) close to the third spring (29) and the outer side wall of the pressure block (27).

6. The centrifugal separation device for oil drilling fluid according to claim 5, characterized in that: Magnetic rings (35) are fixed to the bottom of the movable ring (13) and the top of the circular plate (7), and the suction force between the two magnetic rings (35) is greater than the sum of the elastic forces between the two first springs (19) and the two second springs (24).

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