Controllable drill rod device for directional drilling of drill bit

Abstract

The invention discloses a controllable drill rod device enabling a drill bit to perform directional drilling, and relates to the technical field of drill bit orienting.The controllable drill rod device comprises a machine body, a motor is fixedly installed in the machine body, a rotating shaft is fixedly installed at the output end of the motor, and a drilling head is fixedly installed at the end, away from the output end of the motor, of the rotating shaft; an electric telescopic rod is rotatably installed on the front portion of the motor, a propelling body is rotatably installed at the fixed end of the electric telescopic rod, a cooling device is arranged in the machine body, a drainage device is arranged in the machine body, and a filtering device is arranged in the machine body; the cooling device comprises a first elastic telescopic rod, a water inlet tank, a push rod, a push plate, a water outlet pipe, a fixing rod, a sliding rail, a blocking door and a first bevel block, the push plate is opened through the water outlet pipe to push water in the water inlet tank to be sprayed out of the water outlet pipe, the temperature of the drilling head and the drilling rod can be effectively reduced through sprayed water, and abrasion and damage caused by overheating are prevented; the service life of the drilling tool is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of drill bit orientation, in particular to a controllable drill rod device for enabling a drill bit to perform directional drilling. Background Art

[0002] The controllable drill pipe device is a professional equipment for directional drilling, mainly used in the exploration and development of resources such as oil, natural gas, and geothermal energy. Its core function is to achieve non-vertical or curved trajectory drilling by controlling the direction and angle of the drill bit, so as to reach the target layer more effectively under complex geological conditions.

[0003] The patent with the patent announcement number CN216341906U relates to the field of drill bit orientation technology. The patent provides a controllable drill rod device for directional drilling of the drill bit, including a steering housing, a detection and positioning drill rod is rotatably arranged at one end of the steering housing, a hollow drill rod is rotatably arranged at the other end of the steering housing, the detection and positioning drill rod is connected to the hollow drill rod through a flexible coupling, and a plurality of groups of telescopic support mechanisms are axially arranged on the steering housing, each group of telescopic support mechanisms is multiple and circumferentially arranged on the wall of the hollow drill rod, the interior of the hollow drill rod is used to pass pressurized water, and all telescopic support mechanisms are uniformly extended and retracted by a pressure control mechanism. The patent uses high and low pressure water to switch between each other to control the drilling angle, and can achieve directional drilling by simply connecting with an ordinary drill rod, without the need to use an expensive set of dedicated positioning drill rods, effectively reducing costs, improving the utilization rate of ordinary drilling rigs and saving resources.

[0004] In the above patent, the drilling angle can be controlled by switching between high and low pressure water, and directional drilling can be achieved by simply connecting to an ordinary drill rod. There is no need to use an expensive set of special positioning drill rods, which effectively reduces costs, improves the utilization rate of ordinary drilling rigs and saves resources. However, the drill bit is not cooled by spraying water during drilling, which may cause the drill bit to overheat and cause serious wear of the drill bit, resulting in reduced work efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a controllable drill rod device for directional drilling of a drill bit, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the present invention is implemented through the following technical solutions: a controllable drill rod device for directional drilling of a drill bit, comprising a body, a motor is fixedly installed inside the body, a rotating shaft is fixedly installed at the output end of the motor, a drilling head is fixedly installed at one end of the rotating shaft away from the output end of the motor, an electric telescopic rod is rotatably installed at the front of the motor, a propulsion body is rotatably installed at the fixed end of the electric telescopic rod, a cooling device is arranged inside the body, a drainage device is arranged inside the body, and a filtering device is arranged inside the body; Among them, the cooling device includes an elastic telescopic rod, a water inlet box, a push rod, a push plate, a water outlet pipe, a fixed rod, a slide rail, a baffle door and an inclined block. The elastic telescopic rod is fixedly installed on the circumferential surface of the rotating shaft, the water inlet box is fixedly installed on the inner wall of the machine body, the push rod slides through the water inlet box, the push plate is fixedly installed on an end of the push rod close to the inside of the water inlet box, the water outlet pipe is fixedly installed on the back of the machine body, the fixed rod is fixedly installed on a side of the push plate close to the water outlet pipe, the slide rail is fixedly installed on the inner wall of the water inlet box, the baffle door is slidably installed on the bottom of the slide rail, and the inclined block is fixedly installed on the front of the baffle door. When the rotating shaft rotates, the elastic telescopic rod starts to rotate, and the rotation of the elastic telescopic rod drives the push rod to start moving. The movement of the push rod drives the push plate to start moving. The movement of the push plate drives the fixed rod to start moving. The movement of the fixed rod drives the inclined block to start moving. The movement of the inclined block drives the baffle door to start sliding on the slide rail.

[0007] According to the above technical solution, the cooling device also includes an elastic telescopic rod 2 and a T-shaped rod 1. The elastic telescopic rod 2 is fixedly installed on the inner wall of the water outlet pipe, and the T-shaped rod 1 is fixedly installed on the movable end of the elastic telescopic rod 2. After the baffle moves to open the water outlet pipe, the push plate pushes the T-shaped rod 1 to move. The movement of the T-shaped rod 1 pushes out gravel and other debris that may be generated during drilling, ensuring that the water outlet pipe will not be blocked by gravel and other debris, resulting in poor water flow.

[0008] According to the above technical solution, the side where the movable end of the elastic telescopic rod 1 contacts the push rod is set as an inclined surface, the side where the fixed rod contacts the inclined surface block 1 is set as an inclined surface, and a spring 1 is arranged between the push plate and the water inlet tank. The inclined surface is arranged to ensure that the elastic telescopic rod 1 can smoothly push the push rod when rotating, the inclined surface is arranged to ensure that the fixed rod can push the inclined surface block 1 when moving, and the spring 1 is arranged to ensure that the push plate can achieve autonomous reset.

[0009] According to the above technical scheme, the drainage device includes a sliding rod, a bevel rod, a rack, a water outlet box, a flap, a rotating rod, a gear, a rotating plate and a T-rod 2. The sliding rod slides through the water inlet box, the bevel rod is slidably installed on the inner wall of the machine body, the rack is fixedly installed on the bottom of the bevel rod, the water outlet box is fixedly installed on the inner wall of the machine body, the flap is rotatably installed on the left side of the water outlet box, the rotating rod rotates through the water outlet box, the gear is fixedly installed on the circumferential surface of the rotating rod, the rotating plate is fixedly installed on the circumferential surface of the rotating rod, and the T-rod 2 is slidably installed on the inner wall of the water outlet box. The movement of the moving rod pushes the bevel rod to start moving, the movement of the bevel rod drives the rack to start moving, the movement of the rack drives the gear to start rotating, the rotation of the gear drives the rotating rod to start rotating, the rotation of the rotating rod drives the rotating plate to start rotating, and the rotation of the rotating plate pushes the mud generated by drilling to be discharged.

[0010] According to the above technical solution, the side of the sliding rod and the inclined rod in contact with each other is set as an inclined surface, the side of the sliding rod and the push plate in contact with each other is set as an inclined surface, the rack is meshed with the gear, a second spring is set between the sliding rod and the water inlet tank, a third spring is set between the inclined rod and the inner wall of the machine body, and a fourth spring is set between the second T-shaped rod and the water outlet tank. By setting the inclined surface, it is ensured that the sliding rod can smoothly push the inclined surface rod when it moves, and by setting the inclined surface, it is ensured that the push plate can push the sliding rod when it moves, and by the meshing of the rack and the gear, it is ensured that the rack can drive the gear to move when it moves, and by setting the third spring, it is ensured that the inclined surface rod can achieve self-reset, and by setting the fourth spring, it is ensured that the second T-shaped rod can achieve self-reset.

[0011] According to the above technical solution, the filtering device includes a fixed block, a sliding rod, a scraper rod and a filter plate. The fixed block is fixedly installed on the circumferential surface of the rotating rod, the sliding rod is slidably installed on the left side of the water outlet box, the scraper rod slides through the water outlet box, and the filter plate is fixedly installed on the inner wall of the water outlet box. When the rotating rod rotates, it drives the fixed block to start rotating, the rotation of the fixed block pushes the sliding rod to start sliding, the sliding of the sliding rod pushes the scraper rod to start sliding, and the scraper rod slides to scrape off the gravel or other debris left on the surface of the filter plate after filtering the mud.

[0012] According to the above technical solution, the filtering device also includes two rotating columns, a transmission belt and a movable door. The two rotating columns are rotatably installed on the top of the inner wall of the water outlet box. The two rotating columns are connected by a transmission belt. The movable door slides through the water outlet box. When the scraper rod slides, it drives the transmission belt to start rotating around the rotating column. The rotation of the transmission belt drives the movable door to start sliding. The sliding of the movable door closes the part of the water outlet box close to the filter plate.

[0013] According to the above technical solution, the side where the fixed block and the sliding rod contact each other is set as an inclined surface, the side where the sliding rod and the scraper rod contact each other is set as an inclined surface, a spring five is set between the sliding rod and the water outlet box, and a spring six is ​​set between the scraper rod and the water outlet box. By setting the inclined surface, it is ensured that the fixed block can smoothly push the sliding rod when rotating, and by setting the inclined surface, it is ensured that the sliding rod can smoothly push the scraper rod when moving, and by setting the spring five, it is ensured that the sliding rod can achieve self-reset, and by setting the spring six, it is ensured that the scraper rod can achieve self-reset.

[0014] The present invention provides a controllable drill rod device for directional drilling of a drill bit. It has the following beneficial effects: (1) The invention opens the push plate through the water outlet pipe to push the water in the water inlet tank out from the water outlet pipe. The water spraying can effectively reduce the temperature of the drill head and the drill rod, prevent wear and damage caused by overheating, and extend the service life of the drill. The T-shaped rod moves to push out gravel and other debris that may be generated during drilling, ensuring that the water outlet pipe will not be blocked by gravel and other debris, resulting in poor water flow, thereby reducing equipment failure and downtime caused by blockage and ensuring the continuity of operations.

[0015] (2) In the present invention, the rotating plate starts to rotate by rotating the rotating rod, and the rotating plate pushes the mud generated by drilling out. Timely discharge of the mud generated by drilling can prevent mud accumulation and ensure good fluidity during drilling, thereby improving drilling efficiency. The sliding of the T-shaped rod pushes away gravel that may be blocked in the water outlet box, which helps to maintain the fluidity of the mud, promotes mud discharge, reduces the risk of blockage, and thus improves the stability of drilling.

[0016] (3) The invention starts to slide the scraper rod by sliding the sliding rod. The scraper rod scrapes away the gravel or other debris left on the surface of the filter plate after filtering the mud, ensuring the cleanliness of the mud, thereby improving its fluidity and viscosity, optimizing the drilling effect, preventing impurities from excessively wearing the equipment, reducing the maintenance frequency, and extending the service life of the drilling tools and related equipment. The transmission belt rotates to drive the moving door to start sliding. The moving door slides to close the part of the water outlet tank close to the filter plate, ensuring that the mud is fully processed during the filtration process, effectively removing gravel and impurities, and improving the overall filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 It is a schematic cross-sectional view of the structure of the cooling device of the present invention; Figure 4 It is a cross-sectional schematic diagram of the slide rail and door blocking structure of the present invention; Figure 5It is a schematic cross-sectional view of the structure of the elastic telescopic rod 2 and the T-shaped rod 1 of the present invention; Figure 6 It is a cross-sectional schematic diagram of the fixed block and the sliding rod structure of the present invention; Figure 7 It is a schematic cross-sectional view of the drainage device structure of the present invention; Figure 8 It is a schematic cross-sectional view of the structure of the filtering device of the present invention.

[0018] In the figure: 1, machine body; 2, motor; 3, rotating shaft; 4, drilling head; 5, electric telescopic rod; 6, propulsion body; 7, elastic telescopic rod 1; 8, water inlet tank; 9, push rod; 10, push plate; 11, water outlet pipe; 12, fixed rod; 13, slide rail; 14, door stop; 15, inclined block 1; 16, elastic telescopic rod 2; 17, T-shaped rod 1; 181, sliding rod; 182, inclined rod; 183, rack; 184, water outlet tank; 185, flap; 186, rotating rod; 187, gear; 188, rotating plate; 189, T-shaped rod 2; 191, fixed block; 192, sliding rod; 193, scraper rod; 194, filter plate; 195, rotating column; 196, transmission belt; 197, moving door. DETAILED DESCRIPTION

[0019] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 8 One embodiment of the present invention is: a controllable drill rod device for directional drilling of a drill bit, comprising a body 1, a motor 2 is fixedly installed inside the body 1, a rotating shaft 3 is fixedly installed at the output end of the motor 2, a drilling head 4 is fixedly installed at one end of the rotating shaft 3 away from the output end of the motor 2, an electric telescopic rod 5 is rotatably installed at the front of the motor 2, a propulsion body 6 is rotatably installed at the fixed end of the electric telescopic rod 5, and a cooling device is arranged inside the body 1; Wherein, the cooling device comprises an elastic telescopic rod 7, a water inlet box 8, a push rod 9, a push plate 10, a water outlet pipe 11, a fixed rod 12, a slide rail 13, a baffle 14 and an inclined block 15. The elastic telescopic rod 7 is fixedly installed on the circumferential surface of the rotating shaft 3, the water inlet box 8 is fixedly installed on the inner wall of the machine body 1, the push rod 9 slides through the water inlet box 8, the push plate 10 is fixedly installed on the end of the push rod 9 close to the inside of the water inlet box 8, the water outlet pipe 11 is fixedly installed on the back of the machine body 1, the fixed rod 12 is fixedly installed on one side of the push plate 10 close to the water outlet pipe 11, the slide rail 13 is fixedly installed on the inner wall of the water inlet box 8, the baffle 14 is slidably installed on the bottom of the slide rail 13, and the inclined block 15 is fixedly installed on the front of the baffle 14. The push plate 10 is opened through the water outlet pipe 11 to push the water inside the water inlet box 8 to be sprayed out from the water outlet pipe 11. The water spraying can effectively reduce the temperature of the drilling head 4 and the drill rod, prevent wear and damage caused by overheating, and extend the service life of the drilling tool.

[0021] The cooling device also includes an elastic telescopic rod 16 and a T-shaped rod 17. The elastic telescopic rod 16 is fixedly installed on the inner wall of the water outlet pipe 11, and the T-shaped rod 17 is fixedly installed on the movable end of the elastic telescopic rod 16. The T-shaped rod 17 is moved to push out gravel and other debris that may be generated during drilling, thereby ensuring that the water outlet pipe 11 will not be blocked by gravel and other debris, resulting in poor water flow, reducing equipment failures and downtime caused by blockage, and ensuring the continuity of operations.

[0022] The side where the movable end of the elastic telescopic rod 7 contacts the push rod 9 is set as an inclined surface, the side where the fixed rod 12 contacts the inclined surface block 15 is set as an inclined surface, and a spring 1 is set between the push plate 10 and the water inlet tank 8. The inclined surface is set to ensure that the elastic telescopic rod 7 can smoothly push the push rod 9 when rotating, the inclined surface is set to ensure that the fixed rod 12 can push the inclined surface block 15 when moving, and the spring 1 is set to ensure that the push plate 10 can achieve self-reset.

[0023] When the present embodiment is working, firstly, the machine body 1 is aligned with the ground to be drilled, then the motor 2 is started so that the motor 2 drives the rotating shaft 3 to start rotating, the rotating shaft 3 rotates to drive the drilling head 4 to start rotating, the drilling head 4 rotates to start drilling, during the drilling process, the electric telescopic rod 5 is started as needed, and the movement of the machine body 1 is driven by the extension and retraction of the output end of the electric telescopic rod 5 to control the drilling direction of the drilling head 4, while the rotating shaft 3 rotates, the elastic telescopic rod 7 is driven to start rotating, the elastic telescopic rod 7 rotates to push the push rod 9 to start moving, the push rod 9 moves to drive the push plate 10 to start moving, the push plate 10 moves to drive the fixed rod 12 to start moving, the fixed rod 12 moves to drive the inclined plane block 15 to start moving, and the inclined plane The movement of block 15 drives the baffle door 14 to start sliding on the slide rail 13, and the baffle door 14 moves to open the water outlet pipe 11. The water outlet pipe 11 opens the push plate 10 to push the water in the water inlet tank 8 to spray out from the water outlet pipe 11. The water spraying can effectively reduce the temperature of the drilling head 4 and the drill rod, prevent wear and damage caused by overheating, and extend the service life of the drilling tool; after the baffle door 14 moves to open the water outlet pipe 11, the push plate 10 pushes the T-shaped rod 17 to start moving, and the movement of the T-shaped rod 17 pushes out gravel and other debris that may be generated during drilling to ensure that the water outlet pipe 11 will not be blocked by gravel and other debris, resulting in poor water flow, thereby reducing equipment failures and downtime caused by blockage and ensuring the continuity of operations.

[0024] See also Figure 1-Figure 8 On the basis of the above embodiment, in another embodiment of the present invention, a drainage device is provided inside the machine body 1, and a filtering device is provided inside the machine body 1. The drainage device includes a sliding rod 181, an inclined rod 182, a rack 183, a water outlet box 184, a flap 185, a rotating rod 186, a gear 187, a rotating plate 188 and a T-shaped rod 189. The sliding rod 181 slides through the water inlet box 8, the inclined rod 182 is slidably mounted on the inner wall of the machine body 1, the rack 183 is fixedly mounted on the bottom of the inclined rod 182, and the water outlet box 184 is fixedly mounted on the inner wall of the machine body 1. The flap 185 is rotatably installed on the left side of the water outlet box 184, the rotating rod 186 rotates and penetrates the water outlet box 184, the gear 187 is fixedly installed on the circumferential surface of the rotating rod 186, the rotating plate 188 is fixedly installed on the circumferential surface of the rotating rod 186, and the T-shaped rod 189 is slidably installed on the inner wall of the water outlet box 184. The rotating plate 188 starts to rotate through the rotation of the rotating rod 186. The rotating plate 188 rotates to push the mud generated by drilling out. Discharging the mud generated by drilling in time can prevent mud accumulation and ensure good fluidity during drilling, thereby improving drilling efficiency.

[0025] The side where the sliding rod 181 and the inclined rod 182 contact each other is set as an inclined surface, the side where the sliding rod 181 and the push plate 10 contact each other is set as an inclined surface, the rack 183 is meshed with the gear 187, a second spring is set between the sliding rod 181 and the water inlet tank 8, a third spring is set between the inclined rod 182 and the inner wall of the body 1, and a fourth spring is set between the second T-shaped rod 189 and the water outlet tank 184. By setting the inclined surface, it is ensured that the sliding rod 181 can smoothly push the inclined rod 182 when moving, and by setting the inclined surface, it is ensured that the push plate 10 can push the sliding rod 181 when moving, and by meshing the rack 183 with the gear 187, it is ensured that the rack 183 can drive the gear 187 to move when moving, and by setting the spring three, it is ensured that the inclined rod 182 can achieve self-reset, and by setting the spring four, it is ensured that the second T-shaped rod 189 can achieve self-reset.

[0026] The filtering device includes a fixed block 191, a sliding rod 192, a scraper rod 193 and a filter plate 194. The fixed block 191 is fixedly installed on the circumferential surface of the rotating rod 186, the sliding rod 192 is slidably installed on the left side of the water outlet box 184, the scraper rod 193 slides through the water outlet box 184, and the filter plate 194 is fixedly installed on the inner wall of the water outlet box 184. The sliding of the sliding rod 192 pushes the scraper rod 193 to start sliding. The scraper rod 193 slides to scrape off the gravel or other debris left by the mud filtered on the surface of the filter plate 194, ensuring the cleanliness of the mud, thereby improving its fluidity and viscosity, optimizing the drilling effect, preventing impurities from excessive wear on the equipment, reducing the maintenance frequency, and extending the service life of drilling tools and related equipment.

[0027] The filtering device also includes two rotating columns 195, a transmission belt 196 and a movable door 197. The two rotating columns 195 are rotatably installed on the top of the inner wall of the water outlet box 184. The two rotating columns 195 are connected by the transmission belt 196. The movable door 197 slides through the water outlet box 184. The rotation of the transmission belt 196 drives the movable door 197 to start sliding. The movable door 197 slides to close the part of the water outlet box 184 close to the filter plate 194, ensuring that the mud is fully processed during the filtration process, effectively removing gravel and impurities, and improving the overall filtration efficiency.

[0028] The side where the fixed block 191 and the sliding rod 192 contact each other is set as an inclined surface, the side where the sliding rod 192 and the scraper rod 193 contact each other is set as an inclined surface, a spring five is set between the sliding rod 192 and the water outlet box 184, and a spring six is ​​set between the scraper rod 193 and the water outlet box 184. By setting the inclined surface, it is ensured that the fixed block 191 can smoothly push the sliding rod 192 when rotating, and by setting the inclined surface, it is ensured that the sliding rod 192 can smoothly push the scraper rod 193 when moving, by setting the spring five, it is ensured that the sliding rod 192 can achieve self-reset, and by setting the spring six, it is ensured that the scraper rod 193 can achieve self-reset.

[0029] When the present embodiment is working, the push plate 10 moves and the sliding rod 181 starts to move, the sliding rod 181 moves and the inclined rod 182 starts to move, the inclined rod 182 moves and drives the rack 183 to start to move, the rack 183 moves and drives the gear 187 to start to rotate, the gear 187 rotates and drives the rotating rod 186 to start to rotate, the rotating rod 186 rotates and drives the rotating plate 188 to start to rotate, the rotating plate 188 rotates to push the mud generated by drilling out, and timely discharge of the mud generated by drilling can prevent the accumulation of mud, ensure good fluidity during the drilling process, thereby improving the drilling efficiency, and the rack 183 moves and drives the gear 1 After 87 starts to rotate, the inclined plane rod 182 starts to reset under the action of spring three, and then the rack 183 passes through the baffle at the bottom of the flap 185 and disengages from the meshing state with the gear 187, ensuring that the rack 183 will not mesh with the gear 187 to drive it to rotate when it moves upward, preventing the gear 187 from reversing and driving the rotating rod 186 to reverse, causing the flap 185 to reverse; when the flap 185 rotates, it pushes the T-shaped rod 189 to start sliding, and the sliding of the T-shaped rod 189 will push the gravel that may be blocked in the water outlet box 184, which helps to maintain the fluidity of the mud, promote mud discharge, reduce the risk of blockage, and thus improve the stability of drilling.

[0030] When the rotating rod 186 rotates, it drives the fixed block 191 to start rotating. The rotation of the fixed block 191 drives the sliding rod 192 to start sliding. The sliding of the sliding rod 192 drives the scraper rod 193 to start sliding. The scraper rod 193 slides to scrape off the gravel or other debris left by the mud filtered on the surface of the filter plate 194, ensuring the cleanliness of the mud, thereby improving its fluidity and viscosity, optimizing the drilling effect, preventing impurities from excessively wearing the equipment, reducing the maintenance frequency, and extending the service life of the drilling tools and related equipment; while the scraper rod 193 slides, it drives the transmission belt 196 to start rotating around the rotating column 195. The rotation of the transmission belt 196 drives the moving door 197 to start sliding. The moving door 197 slides to close the part of the water outlet tank 184 close to the filter plate 194, ensuring that the mud is fully processed during the filtration process, effectively removing gravel and impurities, and improving the overall filtration efficiency.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A controllable drill rod device for directional drilling of a drill bit, comprising a body (1), characterized in that: A motor (2) is fixedly mounted inside the machine body (1); a rotating shaft (3) is fixedly mounted at the output end of the motor (2); a drilling head (4) is fixedly mounted at one end of the rotating shaft (3) away from the output end of the motor (2); an electric telescopic rod (5) is rotatably mounted at the front of the motor (2); a propulsion body (6) is rotatably mounted at the fixed end of the electric telescopic rod (5); a cooling device is arranged inside the machine body (1); a drainage device is arranged inside the machine body (1); and a filtering device is arranged inside the machine body (1); The cooling device comprises an elastic telescopic rod (7), a water inlet box (8), a push rod (9), a push plate (10), a water outlet pipe (11), a fixed rod (12), a slide rail (13), a baffle (14) and an inclined surface block (15), wherein the elastic telescopic rod (7) is fixedly mounted on the circumferential surface of the rotating shaft (3), the water inlet box (8) is fixedly mounted on the inner wall of the machine body (1), the push rod (9) slides through the water inlet box (8), the push plate (10) is fixedly mounted on one end of the push rod (9) close to the inside of the water inlet box (8), the water outlet pipe (11) is fixedly mounted on the back of the machine body (1), the fixed rod (12) is fixedly mounted on one side of the push plate (10) close to the water outlet pipe (11), the slide rail (13) is fixedly mounted on the inner wall of the water inlet box (8), the baffle (14) is slidably mounted on the bottom of the slide rail (13), and the inclined surface block (15) is fixedly mounted on the front of the baffle (14).

2. A controllable drill rod device for directional drilling of a drill bit according to claim 1, characterized in that: The cooling device further comprises a second elastic telescopic rod (16) and a first T-shaped rod (17), wherein the second elastic telescopic rod (16) is fixedly mounted on the inner wall of the water outlet pipe (11), and the first T-shaped rod (17) is fixedly mounted on the movable end of the second elastic telescopic rod (16).

3. A controllable drill rod device for directional drilling of a drill bit according to claim 2, characterized in that: The side where the movable end of the elastic telescopic rod (7) contacts the push rod (9) is configured as an inclined surface, the side where the fixed rod (12) contacts the inclined surface block (15) is configured as an inclined surface, and a spring (1) is provided between the push plate (10) and the water inlet tank (8).

4. A controllable drill rod device for directional drilling of a drill bit according to claim 3, characterized in that: The drainage device comprises a sliding rod (181), an inclined rod (182), a rack (183), a water outlet box (184), a flap (185), a rotating rod (186), a gear (187), a rotating plate (188) and a second T-shaped rod (189), wherein the sliding rod (181) slides through the water inlet box (8), the inclined rod (182) is slidably mounted on the inner wall of the body (1), and the rack (183) is fixedly mounted on the bottom of the inclined rod (182). The water outlet box (184) is fixedly mounted on the inner wall of the machine body (1), the flap (185) is rotatably mounted on the left side of the water outlet box (184), the rotating rod (186) rotatably penetrates the water outlet box (184), the gear (187) is fixedly mounted on the circumferential surface of the rotating rod (186), the rotating plate (188) is fixedly mounted on the circumferential surface of the rotating rod (186), and the T-shaped rod (189) is slidably mounted on the inner wall of the water outlet box (184).

5. A controllable drill rod device for directional drilling of a drill bit according to claim 4, characterized in that: The side of the sliding rod (181) and the inclined rod (182) in contact with each other is set as an inclined surface, the side of the sliding rod (181) and the push plate (10) in contact with each other is set as an inclined surface, the rack (183) is meshed with the gear (187), a second spring is set between the sliding rod (181) and the water inlet tank (8), a third spring is set between the inclined rod (182) and the inner wall of the body (1), and a fourth spring is set between the second T-shaped rod (189) and the water outlet tank (184).

6. A controllable drill rod device for directional drilling of a drill bit according to claim 5, characterized in that: The filtering device comprises a fixed block (191), a sliding rod (192), a scraping rod (193) and a filtering plate (194); the fixed block (191) is fixedly mounted on the circumferential surface of the rotating rod (186); the sliding rod (192) is slidably mounted on the left side of the water outlet box (184); the scraping rod (193) slides through the water outlet box (184); and the filtering plate (194) is fixedly mounted on the inner wall of the water outlet box (184).

7. A controllable drill rod device for directional drilling of a drill bit according to claim 6, characterized in that: The filtering device further comprises two rotating columns (195), a transmission belt (196) and a movable door (197); the two rotating columns (195) are rotatably mounted on the top of the inner wall of the water outlet box (184); the two rotating columns (195) are connected by transmission via the transmission belt (196); and the movable door (197) slides through the water outlet box (184).

8. A controllable drill rod device for directional drilling of a drill bit according to claim 7, characterized in that: A surface where the fixed block (191) and the sliding rod (192) contact each other is set as an inclined surface, a surface where the sliding rod (192) and the scraping rod (193) contact each other is set as an inclined surface, a spring five is set between the sliding rod (192) and the water outlet box (184), and a spring six is ​​set between the scraping rod (193) and the water outlet box (184).

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