A directional drilling hole cleaning device

Abstract

This utility model belongs to the field of directional drilling cleaning technology, specifically a directional drilling hole cleaning device, including a main rod, one end of which is fixedly connected to a conical head, and the other end of which is fixedly connected to a drill bit; a hole cleaning mechanism is fixedly connected to the outer wall of the main rod; the hole cleaning mechanism includes a fixing plate fixedly connected to the outer wall of the main rod; by activating the hydraulic cylinder, the output end of the hydraulic cylinder drives the sliding plate to move upward, which in turn drives the bottom of the connecting rod to move upward. Since the bottom height of the connecting rod is constant, when the bottom end of the connecting rod is rotated under force, the top end of the connecting rod will push the slider to slide outward along the sliding opening, which in turn drives the arc-shaped scraper to move outward; when the drill bit is energized and rotates, it drives the main rod to rotate, which in turn drives the entire hole cleaning mechanism to rotate. At this time, the arc-shaped scraper rotates synchronously with the rotating rod, scraping the soil drilled by the drill bit off the hole wall, facilitating the flushing of drilling fluid and achieving the function of rapid hole cleaning.

Description

Technical Field

[0001] This utility model belongs to the field of directional drilling cleaning technology, specifically a directional drilling hole cleaning device. Background Technology

[0002] With the advancement of urbanization and the increase in daily sewage flow in my country, the existing municipal sewage pipe network can no longer meet the discharge requirements, thus necessitating the expansion of the sewage pipe network. The massive project of constructing the sewage pipe network involves drilling and cleaning holes underground using drilling and cleaning equipment. Currently, these drilling and cleaning devices, when using drill rods to complete the drilling work, require the injection of drilling fluid into the drilled holes for cleaning treatment.

[0003] A Chinese patent with announcement number CN216741420U discloses a guide hole debris cleaning device for directional drilling, including a retrieval cylinder. A top plate is fixedly connected to one outer wall of the retrieval cylinder, and a drive shaft is rotatably connected to one outer wall of the retrieval cylinder, passing through one outer wall of the retrieval cylinder. A connecting shaft is rotatably connected to one outer wall of the drive shaft, and the connecting shaft and the top plate form a fixed connection. This invention can drive the connecting shaft to rotate through the drill rod, thereby driving the top plate to rotate. The arc-shaped top plate can collect and store debris in the guide hole in the retrieval cylinder, improving the cleaning effect in the guide hole.

[0004] Currently, existing technologies can use retrieval tubes to clean and collect debris. However, during drilling, the drill bit rotates centrifugally, and the excavated soil and mud are thrown onto the borehole wall. When flushing with drilling fluid, it is inconvenient to flush quickly, and a large amount of drilling fluid may be needed to flush down the excavated soil and mud, which wastes drilling fluid and requires a lot of cleaning time, which is not conducive to the rapid circulation of drilling fluid.

[0005] Therefore, a directional drilling and hole cleaning device is proposed to address the above problems. Utility Model Content

[0006] To overcome the shortcomings of existing technologies and solve the problem of inconvenient and rapid flushing of slag from the borehole wall, a directional drilling cleaning device is proposed.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: A directional drilling and hole cleaning device of this utility model includes a main rod, one end of which is fixedly connected to a conical head, and one end of which is fixedly connected to a drill bit; a hole cleaning mechanism is fixedly connected to the outer wall of the main rod; the hole cleaning mechanism includes a fixing plate fixedly connected to the outer wall of the main rod; a circular plate is fixedly connected to the outer wall of the main rod near the conical head; a sliding plate is slidably connected between the circular plate and the fixing plate; multiple hydraulic cylinders are fixedly connected to the side wall of the fixing plate; the output ends of the hydraulic cylinders are all fixedly connected to the sliding plate; four connecting rods are rotatably connected to the sliding plate via pins; four sliders are slidably connected to the circular plate via sliding openings, and the top ends of the connecting rods are rotatably connected to the bottom of the sliders via pins; an arc-shaped scraper is fixedly connected to the top of each slider.

[0008] Preferably, a fixed cylinder is fixedly connected to the top of the fixed plate; a telescopic cylinder is fixedly connected to the bottom of the sliding plate, one end of the telescopic cylinder is slidably connected to the inside of the fixed cylinder, and multiple springs are provided between the telescopic cylinder and the fixed cylinder.

[0009] Preferably, the conical head has an internal cavity and multiple liquid outlet holes; the main rod has an internal liquid passage cavity; one end of the liquid passage cavity is connected to the internal cavity; a rotating frame is rotatably connected to the inner wall of the liquid passage cavity near the conical head, and an impeller is fixedly connected to the end of the rotating frame near the internal cavity.

[0010] Preferably, a fixing ring is fixedly connected to the bottom of the main rod, and a filter basket is fixedly connected to the top of the fixing ring; multiple through holes are opened on the side wall of the filter basket; and the top opening of the filter basket is shaped like a trumpet.

[0011] Preferably, the outer wall of the main rod is rotatably connected to a rotating cylinder via a bearing, and a helical blade is fixedly attached to the outer wall of the rotating cylinder; the bottom end of the rotating cylinder extends into a fixed ring and is provided with a driving mechanism.

[0012] Preferably, the driving mechanism includes an external toothed ring fixed to the outer wall of the rotating drum; an internal toothed ring is fixed to the inner wall of the fixed ring; and two toothed columns are rotatably connected to the bottom of the filter basket via a rotating shaft, with the two sides of the toothed columns meshing with the internal toothed ring and the external toothed ring, respectively.

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

[0014] This utility model provides a directional drilling hole cleaning device. It features an arc-shaped scraper. Activating a hydraulic cylinder causes the output end of the cylinder to drive a sliding plate upwards, which in turn drives the bottom of a connecting rod upwards. Since the bottom of the connecting rod has a fixed height, when the bottom of the connecting rod rotates under force, the top of the connecting rod pushes a slider outwards along the sliding opening. This slider then drives the arc-shaped scraper outwards. When the drill bit is energized and rotates, it drives the main rod to rotate, which in turn drives the entire hole cleaning mechanism. At this time, the arc-shaped scraper rotates synchronously with the rotating rod, scraping the soil drilled down from the hole wall, facilitating the flushing with drilling fluid and achieving rapid hole cleaning.

[0015] This utility model provides a directional drilling and cleaning device. By setting an inner toothed ring, an outer toothed ring, and a toothed column, when the main rod rotates, it drives the fixed ring and the filter basket to rotate. The fixed ring drives the inner toothed ring to rotate, which in turn drives the toothed column to rotate. The toothed column drives the outer toothed ring to rotate in the opposite direction, which in turn drives the rotating drum to rotate in the opposite direction. The rotating drum drives the spiral blades to rotate in the opposite direction. The rotation of the spiral blades is opposite to that of the filter basket, which makes it easier to crush the soil and does not affect the circulation of drilling fluid. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a sectional view of the present invention;

[0019] Figure 3 This is an enlarged view of point A in this utility model;

[0020] Figure 4 This is a perspective view of the arc-shaped scraper in this utility model;

[0021] Figure 5 This is a perspective view of the spiral blade in this utility model;

[0022] Figure 6 This is a perspective view of the fixing ring in this utility model;

[0023] Legend:

[0024] 1. Main rod; 11. Conical head; 12. Drill bit; 13. Liquid outlet; 14. Liquid passage chamber; 15. Rotating frame; 16. Impeller; 2. Fixed plate; 21. Fixed cylinder; 22. Telescopic cylinder; 23. Slide plate; 24. Hydraulic cylinder; 25. Connecting rod; 26. Circular plate; 27. Sliding block; 28. Arc scraper; 3. Filter basket; 31. Through hole; 32. Fixed ring; 33. Rotating cylinder; 34. Spiral blade; 35. Internal gear ring; 36. Gear column; 37. External gear ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Specific implementation examples are given below.

[0027] Please see Figures 1-6 This utility model provides a directional drilling and hole cleaning device, including a main rod 1, one end of which is fixedly connected to a conical head 11, and one end of which is fixedly connected to a drill bit 12; a hole cleaning mechanism is fixedly connected to the outer wall of the main rod 1; the hole cleaning mechanism includes a fixing plate 2 fixedly connected to the outer wall of the main rod 1; a circular plate 26 is fixedly connected to the outer wall of the main rod 1 near the end of the conical head 11; a sliding plate 23 is slidably connected between the circular plate 26 and the fixing plate 2; a plurality of hydraulic cylinders 24 are fixedly connected to the side wall of the fixing plate 2; the output ends of the hydraulic cylinders 24 are all fixedly connected to the sliding plate 23; four connecting rods 25 are rotatably connected to the sliding plate 23 by pins; four sliders 27 are slidably connected to the circular plate 26 by sliding openings, and the top ends of the connecting rods 25 are rotatably connected to the bottom of the sliders 27 by pins; an arc-shaped scraper 28 is fixedly connected to the top of each slider 27.

[0028] During operation, to address the issue of inconvenient and rapid flushing of excavated soil from the borehole wall, hydraulic cylinder 24 needs to be activated during drilling. The output end of hydraulic cylinder 24 drives slide plate 23 to move upward, which in turn drives the bottom of connecting rod 25 to move upward. Since the bottom of connecting rod 25 has a fixed height, when the bottom of connecting rod 25 is rotated under force, the top of connecting rod 25 pushes slider 27 to slide outward along the sliding opening. Slider 27 then drives arc scraper 28 to move outward. When drill bit 12 is energized and rotates, it drives main rod 1 to rotate, which in turn drives the entire hole cleaning mechanism to rotate. At this time, arc scraper 28 rotates synchronously with the rotating rod, scraping the soil drilled by drill bit 12 off the borehole wall, facilitating flushing with drilling fluid and achieving rapid hole cleaning.

[0029] Furthermore, such as Figure 2 As shown, a fixed cylinder 21 is fixedly connected to the top of the fixed plate 2; a telescopic cylinder 22 is fixedly connected to the bottom of the sliding plate 23, one end of the telescopic cylinder 22 is slidably connected to the inside of the fixed cylinder 21, and multiple springs are provided between the telescopic cylinder 22 and the fixed cylinder 21.

[0030] During operation, a fixed cylinder 21 and a telescopic cylinder 22 are used to protect the hydraulic cylinder 24 and reduce the corrosion of the hydraulic cylinder 24 by mud and slag. When the hydraulic cylinder 24 is opened, the output end of the hydraulic cylinder 24 drives the slide plate 23 to move, and the slide plate 23 drives the telescopic cylinder 22 to move. At this time, the spring is stretched, and the telescopic cylinder 22 and the fixed cylinder 21 protect the hydraulic cylinder 24 inside.

[0031] Furthermore, such as Figure 2 and Figure 3 As shown, the conical head 11 has a cavity inside, and multiple liquid outlet holes 13 are provided on the conical head 11; the main rod 1 has a liquid passage cavity 14 inside; one end of the liquid passage cavity 14 is connected to the cavity; a rotating frame 15 is rotatably connected to the inner wall of the end of the liquid passage cavity 14 near the conical head 11, and an impeller 16 is fixedly connected to the end of the rotating frame 15 near the cavity.

[0032] During operation, when drilling fluid needs to be introduced for flushing, drilling fluid is injected through the fluid inlet chamber 14. The drilling fluid is then transported to the cavity through the fluid inlet chamber 14 and finally sprayed out from the outlet hole 13 into the borehole wall. During the input process, the drilling fluid passes through the impeller 16, which drives the impeller 16 to rotate. The rotation of the impeller 16 causes the drilling fluid to be sprayed out in multiple directions, expanding the flushing range and improving the flushing efficiency.

[0033] Furthermore, such as Figure 2 As shown, a fixing ring 32 is fixedly connected to the bottom of the main rod 1, and a filter basket 3 is fixedly connected to the top of the fixing ring 32; multiple through holes 31 are opened on the side wall of the filter basket 3; the top opening of the filter basket 3 is shaped like a trumpet.

[0034] During operation, a filter basket 3 is set up to filter out larger soil clods, preventing them from blocking the borehole wall and hindering the circulation of drilling fluid. By setting it in the shape of a funnel, the filtration range can be expanded, and finally the drilling fluid and small impurities pass through the through hole 31.

[0035] Furthermore, such as Figure 2 and Figure 5 As shown, the outer wall of the main rod 1 is rotatably connected to a rotating cylinder 33 via a bearing, and a spiral blade 34 is fixedly attached to the outer wall of the rotating cylinder 33; the bottom end of the rotating cylinder 33 extends into the fixed ring 32 and is provided with a driving mechanism.

[0036] During operation, the soil clods flow into the filter basket 3. At this time, the main rod 1 drives the rotating drum 33 to rotate through the drive mechanism. The rotating drum 33 drives the spiral blades 34 to rotate. The spiral blades 34 crush the soil clods into small soil clods or broken soil, which eventually flow out with the drilling fluid circulation.

[0037] Furthermore, such as Figure 5 and Figure 6 As shown, the driving mechanism includes an external toothed ring 37 fixed to the outer wall of the rotating drum 33; an internal toothed ring 35 is fixed to the inner wall of the fixed ring 32; and two toothed pillars 36 are rotatably connected to the bottom of the filter basket 3 via a rotating shaft, with the two sides of the toothed pillars 36 meshing with the internal toothed ring 35 and the external toothed ring 37 respectively.

[0038] During operation, the main rod 1 rotates, driving the fixed ring 32 and the filter basket 3 to rotate. The fixed ring 32 drives the inner toothed ring 35 to rotate, which in turn drives the toothed column 36 to rotate. The toothed column 36 drives the outer toothed ring 37 to rotate in the opposite direction, which in turn drives the rotating drum 33 to rotate in the opposite direction. The rotating drum 33 drives the spiral blades 34 to rotate in the opposite direction. The spiral blades 34 rotate in the opposite direction to the filter basket 3, which makes it easier to crush the soil and does not affect the circulation of drilling fluid. After drilling is completed, the main rod 1 is driven to rotate in the opposite direction. The rotating rod drives the spiral blades 34 to rotate through the drive mechanism, which facilitates the output of impurities in the filter basket 3.

[0039] Working principle: To solve the problem of inconvenient and quick flushing of soil and debris from the borehole wall, when drilling is required, hydraulic cylinder 24 needs to be activated. The output end of hydraulic cylinder 24 drives slide plate 23 to move upward, which in turn drives the bottom of connecting rod 25 to move upward. Since the bottom of connecting rod 25 has a fixed height, when the bottom of connecting rod 25 is rotated under force, the top of connecting rod 25 will push slider 27 to slide outward along the sliding opening. Slider 27 drives arc scraper 28 to move outward. When drill bit 12 is energized and rotates, it drives main rod 1 to rotate, which in turn drives the entire hole cleaning mechanism to rotate. At this time, arc scraper 28 rotates synchronously with the rotating rod, scraping the soil drilled by drill bit 12 off the borehole wall, facilitating flushing with drilling fluid and achieving the function of quick hole cleaning.

[0040] When drilling fluid needs to be introduced for flushing, drilling fluid is injected through the fluid inlet chamber 14. The drilling fluid is transported to the cavity through the fluid inlet chamber 14 and finally sprayed out from the outlet hole 13 into the borehole wall. During the input process, the drilling fluid passes through the impeller 16, which drives the impeller 16 to rotate. The rotation of the impeller 16 rotates the drilling fluid in multiple directions and sprays it out, expanding the flushing range and improving the flushing efficiency.

[0041] When the main rod 1 rotates, it drives the fixed ring 32 and the filter basket 3 to rotate. The fixed ring 32 drives the inner toothed ring 35 to rotate, which in turn drives the toothed column 36 to rotate. The toothed column 36 drives the outer toothed ring 37 to rotate in the opposite direction, which in turn drives the rotating drum 33 to rotate in the opposite direction. The rotating drum 33 drives the spiral blades 34 to rotate in the opposite direction. The rotation of the spiral blades 34 is opposite to that of the filter basket 3, which makes it easier to crush the soil and does not affect the circulation of drilling fluid. After drilling is completed, the main rod 1 is driven to rotate in the opposite direction. The rotating rod drives the spiral blades 34 to rotate through the drive mechanism, which facilitates the output of impurities in the filter basket 3.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A directional drilling and hole cleaning device, comprising a main rod (1), one end of which is fixedly connected to a conical head (11), and one end of which is fixedly connected to a drill bit (12); a hole cleaning mechanism is fixedly connected to the outer wall of the main rod (1); characterized in that: The hole cleaning mechanism includes a fixed plate (2) fixed to the outer wall of the main rod (1); a circular plate (26) is fixed to one end of the outer wall of the main rod (1) near the conical head (11); a sliding plate (23) is slidably connected between the circular plate (26) and the fixed plate (2); a plurality of hydraulic cylinders (24) are fixed to the side wall of the fixed plate (2); the output ends of the hydraulic cylinders (24) are all fixed to the sliding plate (23); four connecting rods (25) are rotatably connected to the sliding plate (23) by pins; four sliders (27) are slidably connected to the circular plate (26) by sliding ports, and the top of the connecting rods (25) is rotatably connected to the bottom of the sliders (27) by pins; an arc-shaped scraper (28) is fixed to the top of each slider (27).

2. The directional drilling and hole cleaning device according to claim 1, characterized in that: The top of the fixed plate (2) is fixedly connected to a fixed cylinder (21); the bottom of the sliding plate (23) is fixedly connected to a telescopic cylinder (22), one end of the telescopic cylinder (22) is slidably connected to the inside of the fixed cylinder (21), and multiple springs are provided between the telescopic cylinder (22) and the fixed cylinder (21).

3. The directional drilling and hole cleaning device according to claim 2, characterized in that: The conical head (11) has a cavity inside and multiple liquid outlet holes (13) are provided on the conical head (11); the main rod (1) has a liquid passage cavity (14) inside; one end of the liquid passage cavity (14) is connected to the cavity; a rotating frame (15) is rotatably connected to the inner wall of the end of the liquid passage cavity (14) near the conical head (11), and an impeller (16) is fixedly connected to the end of the rotating frame (15) near the cavity.

4. The directional drilling and hole cleaning device according to claim 3, characterized in that: The bottom of the main rod (1) is fixed with a fixing ring (32), and the top of the fixing ring (32) is fixed with a filter basket (3); multiple through holes (31) are opened on the side wall of the filter basket (3); the top opening of the filter basket (3) is shaped like a trumpet.

5. The directional drilling and hole cleaning device according to claim 4, characterized in that: The outer wall of the main rod (1) is rotatably connected to a rotating cylinder (33) via a bearing, and a spiral blade (34) is fixedly attached to the outer wall of the rotating cylinder (33); the bottom end of the rotating cylinder (33) extends into the fixed ring (32) and is provided with a driving mechanism.

6. The directional drilling and hole cleaning device according to claim 5, characterized in that: The driving mechanism includes an external toothed ring (37) fixed to the outer wall of the rotating drum (33); an internal toothed ring (35) is fixed to the inner wall of the fixed ring (32); and two toothed columns (36) are rotatably connected to the bottom of the filter basket (3) through a rotating shaft. The two sides of the toothed columns (36) are respectively engaged with the internal toothed ring (35) and the external toothed ring (37).

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