Special water-passing cone barrel drill

Abstract

The utility model discloses a special water-passing cone barrel drill, which relates to the technical field of cone barrel drills, and comprises a connecting square, a first drill barrel and a second drill barrel, the first drill barrel is arranged below the connecting square, a drill rod assembly is arranged in the first drill barrel, the second drill barrel is arranged below the first drill barrel, and the second drill barrel is arranged below the connecting square. Spiral guide pieces are installed on the outer side of the first drilling barrel and the outer side of the second drilling barrel, a nozzle installation hole is formed in the outer side of the lower end of the drilling rod assembly, and a flow guide disc is installed below the drilling rod assembly. The special water-passing cone barrel drill is provided with the flow guide disc, the hollow structure of the drill rod assembly is matched with the high-pressure nozzle, the flow guide disc and the flow guide groove, water flow can be accurately guided to the cone assembly, efficient cooling and chip removal functions are achieved, the service life of the cone assembly is prolonged, the cost and time for frequently replacing cones are reduced, and the service life of the cone assembly is prolonged. And rock debris can be discharged in time in the drilling process, and the situation that the drilling efficiency and quality are affected by rock debris accumulation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rotary cylinder drill technology, specifically a specially designed water-cooled rotary cylinder drill. Background Technology

[0002] In modern engineering construction, operations such as mining, tunnel excavation, and well drilling often require efficient drilling. Roller cone drills, with their unique structure and working principle, play a crucial role in these fields. Roller cone drills improve operational efficiency by using rotating roller cones to break rocks.

[0003] For example, Chinese utility model patent application number 202121272110.5 discloses a multi-cone drill bit for karst geology, which can redistribute the spacing between multiple cone drill bits according to the formation conditions; the structure of this utility model reduces the axial vibration of the drill bit and improves the stability of the drill bit. However, its device still has certain defects;

[0004] During the drilling process, the roller cone drill experiences friction with the drilling location, resulting in a high surface temperature. This makes it difficult to cool the drill in time, thus reducing its service life.

[0005] Therefore, we proposed a specially designed water-cooled roller cone drill to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a specially designed water-cooled rotary drill to solve the problem mentioned in the background art that, during the drilling process of rotary drills on the market, the surface temperature of the rotary drill is high due to friction with the drilling position, and it is impossible to cool the rotary drill in time, thereby reducing the service life of the rotary drill.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a specially designed water-permeable roller cone drill, comprising a connecting unit, a first drill cylinder, and a second drill cylinder. The first drill cylinder is installed below the connecting unit, and a drill rod assembly is disposed inside the first drill cylinder. The second drill cylinder is disposed below the first drill cylinder, and spiral guide plates are installed on the outer sides of both the first and second drill cylinders. A nozzle mounting hole is opened on the outer side of the lower end of the drill rod assembly. A flow guide plate is installed below the drill rod assembly, and a flow guide groove is opened on the flow guide plate. A connecting groove is opened on the lower inner wall of the second drill cylinder, and a connecting block is installed below the second drill cylinder. A roller cone assembly is installed on the connecting block.

[0008] The upper surface of the second drill barrel is provided with a snap-fit ​​groove, the lower surface of the first drill barrel is provided with an abutment ring, the exterior of the first drill barrel and the second drill barrel are respectively provided with a first fixing block and a second fixing block, the first fixing block is provided with a through hole, the second fixing block is provided with a fixing bolt, and the fixing bolt is provided with a limit nut.

[0009] Preferably, the nozzle mounting holes are arranged in a circular structure, and a high-pressure nozzle is installed on the nozzle mounting holes. The high-pressure nozzle is detachably connected to the nozzle mounting holes. The drill rod assembly has a hollow structure design. The drill rod assembly introduces water source through a water pump. The upper part of the drill rod assembly is connected through a drive assembly. The spiral guide plates on the first drill barrel and the second drill barrel correspond to each other.

[0010] With the above structural design, the connector is connected to the drive equipment. The drive equipment drives the drill rod assembly and the entire drill barrel to rotate. The drill rod assembly has a hollow structure. Water is introduced into it through a water pump. The water flows downward along the internal channel of the drill rod assembly. The spiral guide vanes on the outside of the first and second drill barrels allow the drill barrel to discharge debris during the drilling process.

[0011] Preferably, the number of nozzle mounting holes is the same as the number of guide grooves and connecting grooves. The height of the guide plate and connecting groove is set according to the actual drilling operation requirements. The guide groove on the guide plate is connected to the connecting groove on the second drill barrel. The guide plate and the drill rod assembly are detachably connected.

[0012] With the above structural design, the water flows through the guide channel and then into the connecting channel, eventually flowing to the roller cone assembly. The water flow cools and removes chips from the roller cone assembly, reducing the temperature of the roller cone during rock crushing and extending its service life. At the same time, the water flow carries the rock chips generated during crushing out of the borehole, ensuring the smooth progress of drilling operations.

[0013] Preferably, the guide groove is distributed in a circular structure, and the inclination angle of the high-pressure nozzle on the nozzle mounting hole is the same as the inclination angle of the guide groove.

[0014] With the above structural design, water is ejected from the high-pressure nozzle under pressure. The tilt angle of the high-pressure nozzle on the nozzle mounting hole is the same as the tilt angle of the guide channel, allowing the ejected water to directly enter the guide channel on the guide plate.

[0015] Preferably, the toothed wheel assembly corresponds to the connecting groove, and the toothed wheel assembly is detachably connected to the connecting block.

[0016] With the above structural design, the roller assembly can be easily replaced when it is severely worn, ensuring that the roller assembly can effectively crush rocks during rotation.

[0017] Preferably, a sealing gasket is installed on the lower surface of the abutment ring, and the abutment ring is engaged with the snap-fit ​​groove.

[0018] With the above structural design, the first drill barrel and the second drill barrel are engaged with the locking groove by the abutment ring, and the sealing gasket on the lower surface of the abutment ring ensures the sealing of the connection between the two, thereby improving the connection stability of the first drill barrel and the second drill barrel.

[0019] Preferably, the center line of the fixing bolt coincides with the center line of the through hole, and the first fixing block, the second fixing block, and the fixing bolt do not contact the spiral guide plate.

[0020] With the above structural design, when installing the first drill barrel and the second drill barrel, the abutment ring at the bottom of the first drill barrel is engaged in the snap-fit ​​groove on the second drill barrel, and at the same time, the fixing bolt on the second drill barrel passes through the through hole of the first fixing block, and then is tightened by the limit nut, thereby completing the installation of the first drill barrel and the second drill barrel. Similarly, the first drill barrel and the second drill barrel can be disassembled, which facilitates the separate maintenance of the first drill barrel and the second drill barrel.

[0021] Compared with the prior art, the beneficial effects of this utility model are: This specially designed water-cooled roller cone drill:

[0022] 1. Equipped with a guide plate, the hollow structure of the drill rod assembly, together with the high-pressure nozzle, guide plate, and guide channel, can accurately guide the water flow to the roller cone assembly, achieving efficient cooling and chip removal functions. This not only extends the service life of the roller cone assembly and reduces the cost and time of frequent roller cone replacement, but also ensures that rock cuttings can be discharged in time during the drilling process, avoiding the accumulation of rock cuttings that affects drilling efficiency and quality.

[0023] 2. A first drill barrel and a second drill barrel are provided. When installing the first drill barrel and the second drill barrel, the abutment ring at the bottom of the first drill barrel is engaged in the snap-fit ​​groove on the second drill barrel. At the same time, the fixing bolt on the second drill barrel passes through the through hole of the first fixing block and is then tightened by the limit nut, thereby completing the installation of the first drill barrel and the second drill barrel. Similarly, the first drill barrel and the second drill barrel can be disassembled, thereby facilitating the separate maintenance of the first drill barrel and the second drill barrel. Attached Figure Description

[0024] Figure 1 This is a partial cross-sectional view of the present invention.

[0025] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 3 This is a schematic diagram of the structure of the first and second drill barrels of this utility model during disassembly;

[0027] Figure 4 This is a schematic diagram of the drill rod assembly and nozzle mounting hole positions of this utility model;

[0028] Figure 5 This is a schematic diagram of the flow guide plate structure of this utility model;

[0029] Figure 6 This is a schematic diagram of the position structure of the connecting groove and the second drill barrel of this utility model.

[0030] In the diagram: 1. Connecting element; 2. First drill barrel; 3. Second drill barrel; 4. Spiral guide plate; 5. Drill rod assembly; 6. Nozzle mounting hole; 7. Guide plate; 8. Guide groove; 9. Connecting groove; 10. Connecting block; 11. Roller assembly; 12. Snap-fit ​​groove; 13. Abutment ring; 14. Sealing gasket; 15. First fixing block; 16. Second fixing block; 17. Through hole; 18. Fixing bolt; 19. Limiting nut. Detailed Implementation

[0031] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-6This utility model provides a technical solution: a specially designed water-passing roller cone drill, including a connecting unit 1, a first drill cylinder 2, a second drill cylinder 3, a spiral guide plate 4, a drill rod assembly 5, a nozzle mounting hole 6, a guide plate 7, a guide groove 8, a connecting groove 9, a connecting block 10, a roller cone assembly 11, a snap-fit ​​groove 12, an abutment ring 13, a sealing gasket 14, a first fixing block 15, a second fixing block 16, a through hole 17, a fixing bolt 18, and a limiting nut 19. The first drill cylinder 2 is installed below the connecting unit 1, and the drill rod assembly 5 is arranged inside the first drill cylinder 2. The second drill cylinder 3 is arranged below the first drill cylinder 2. Spiral guide plates 4 are installed on the outer sides of both the first drill cylinder 2 and the second drill cylinder 3. The lower end of the drill rod assembly 5 is located on the outer side. The drill rod assembly 5 has a nozzle mounting hole 6, which is circular in shape and has a high-pressure nozzle mounted on it. The high-pressure nozzle is detachably connected to the nozzle mounting hole 6. The drill rod assembly 5 has a hollow structure and is supplied with water via a water pump. The upper part of the drill rod assembly 5 is connected to a drive assembly. The spiral guide plates 4 on the first drill barrel 2 and the second drill barrel 3 correspond to each other, connecting the connection point 1 to the drive device. The drive device drives the drill rod assembly 5 and the entire drill barrel to rotate. The drill rod assembly 5 has a hollow structure and is supplied with water via a water pump. The water flows downward along the internal channels of the drill rod assembly 5. The spiral guide plates 4 on the outside of the first drill barrel 2 and the second drill barrel 3 allow the drill barrel to remove debris during drilling. Below the drill rod assembly 5, a guide plate 7 is installed. The number of nozzle mounting holes 6 is the same as the number of guide grooves 8 and connecting grooves 9. The height of the guide plate 7 and connecting grooves 9 is set according to the actual drilling operation requirements. The guide grooves 8 on the guide plate 7 are connected to the connecting grooves 9 on the second drill barrel 3. The guide plate 7 is detachably connected to the drill rod assembly 5. Water flows through the guide grooves 8 and then into the connecting grooves 9, eventually flowing to the roller cone assembly 11. The water flow cools and removes chips from the roller cone assembly 11, reducing the temperature of the roller cone during rock crushing and extending its service life. At the same time, it carries the rock chips generated during crushing out of the borehole with the water flow, ensuring the smooth progress of the drilling operation. The guide plate 7 is provided with guide grooves 8. The components 8 are arranged in a circular structure. The tilt angle of the high-pressure nozzle on the nozzle mounting hole 6 is the same as the tilt angle of the guide groove 8. Water is sprayed out from the high-pressure nozzle under pressure. The sprayed water can directly enter the guide groove 8 on the guide plate 7. A connecting groove 9 is opened on the lower inner wall of the second drill barrel 3, and a connecting block 10 is installed on the lower part of the second drill barrel 3. A roller cone assembly 11 is installed on the connecting block 10. The roller cone assembly 11 corresponds to the connecting groove 9. The roller cone assembly 11 and the connecting block 10 are detachably connected. When the roller cone assembly 11 is severely worn, it is easy to replace it, ensuring that the roller cone assembly 11 can effectively break rocks during rotation.

[0033] The upper surface of the second drill barrel 3 is provided with a snap-fit ​​groove 12, and the lower surface of the first drill barrel 2 is provided with an abutment ring 13. A sealing gasket 14 is provided on the lower surface of the abutment ring 13. The abutment ring 13 is snapped into the snap-fit ​​groove 12. The first drill barrel 2 and the second drill barrel 3 are snapped into each other through the abutment ring 13 and the snap-fit ​​groove 12. The sealing gasket 14 on the lower surface of the abutment ring 13 ensures the sealing of the connection between the two, thereby improving the connection stability of the first drill barrel 2 and the second drill barrel 3. The exterior of the first drill barrel 2 and the second drill barrel 3 are respectively provided with a first fixing block 15 and a second fixing block 16. The first fixing block 15 is provided with a through hole 17, and the second fixing block 16 is provided with a fixing bolt 18. A limiting nut 19 is installed on the 8. The center line of the fixing bolt 18 coincides with the center line of the through hole 17. The first fixing block 15, the second fixing block 16, and the fixing bolt 18 do not contact the spiral guide plate 4. When installing the first drill barrel 2 and the second drill barrel 3, the abutment ring 13 below the first drill barrel 2 is engaged in the snap-fit ​​groove 12 on the second drill barrel 3. At the same time, the fixing bolt 18 on the second drill barrel 3 passes through the through hole 17 of the first fixing block 15 and is then tightened by the limiting nut 19, thereby completing the installation of the first drill barrel 2 and the second drill barrel 3. Similarly, the first drill barrel 2 and the second drill barrel 3 can be disassembled, which facilitates the separate maintenance of the first drill barrel 2 and the second drill barrel 3.

[0034] Working principle: When using this specially designed water-cooled roller cone drill, firstly, connect the connector 1 to the drive device. The drive device drives the drill rod assembly 5 and the entire drill barrel to rotate. The drill rod assembly 5 has a hollow structure. Water is introduced into it through a water pump. The water flows downward along the internal channel of the drill rod assembly 5. Under pressure, the water is sprayed out from the high-pressure nozzle. The inclination angle of the high-pressure nozzle on the nozzle mounting hole 6 is the same as the inclination angle of the guide groove 8. The sprayed water can directly enter the guide groove 8 on the guide plate 7. After passing through the guide groove 8, the water flows into the connecting groove 9 and finally flows to the roller cone assembly 11. The water flow cools the roller cone assembly 11 and removes chips, reducing the temperature of the roller cone during the rock crushing process and extending its service life. At the same time, it carries the rock chips generated by the crushing out of the borehole with the water flow, ensuring the smooth progress of the drilling operation.

[0035] When installing the first drill barrel 2 and the second drill barrel 3, the abutment ring 13 below the first drill barrel 2 is engaged in the snap-fit ​​groove 12 on the second drill barrel 3. Simultaneously, the fixing bolt 18 on the second drill barrel 3 passes through the through hole 17 of the first fixing block 15, and is then tightened by the limiting nut 19. This completes the installation of the first drill barrel 2 and the second drill barrel 3. Similarly, the first drill barrel 2 and the second drill barrel 3 can be disassembled, facilitating separate maintenance of the first drill barrel 2 and the second drill barrel 3, thus completing a series of tasks. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A specially designed water-cooled roller cone drill, comprising a connecting unit (1), a first drill cylinder (2), and a second drill cylinder (3), wherein the first drill cylinder (2) is installed below the connecting unit (1), and a drill rod assembly (5) is disposed inside the first drill cylinder (2), characterized in that: A second drill cylinder (3) is provided below the first drill cylinder (2). Spiral guide plates (4) are installed on the outer sides of both the first drill cylinder (2) and the second drill cylinder (3). A nozzle mounting hole (6) is opened on the outer side of the lower end of the drill rod assembly (5). A guide plate (7) is installed below the drill rod assembly (5), and a guide groove (8) is opened on the guide plate (7). A connecting groove (9) is opened on the inner wall below the second drill cylinder (3), and a connecting block (10) is installed below the second drill cylinder (3). A roller cone assembly (11) is installed on the connecting block (10). The upper surface of the second drill barrel (3) is provided with a snap-fit ​​groove (12), the lower surface of the first drill barrel (2) is provided with an abutment ring (13), the first drill barrel (2) and the second drill barrel (3) are respectively provided with a first fixing block (15) and a second fixing block (16), and the first fixing block (15) is provided with a through hole (17), the second fixing block (16) is provided with a fixing bolt (18), and the fixing bolt (18) is provided with a limit nut (19).

2. The specially designed water-cooled roller cone drill according to claim 1, characterized in that: The nozzle mounting holes (6) are arranged in a circular structure, and a high-pressure nozzle is installed on the nozzle mounting holes (6). The high-pressure nozzle is detachably connected to the nozzle mounting holes (6). The drill rod assembly (5) is designed with a hollow structure. The drill rod assembly (5) introduces water source through a water pump. The upper part of the drill rod assembly (5) is connected through a drive assembly. The spiral guide plates (4) on the first drill barrel (2) and the second drill barrel (3) correspond to each other.

3. The specially designed water-cooled roller cone drill according to claim 2, characterized in that: The number of nozzle mounting holes (6) is the same as the number of guide grooves (8) and connecting grooves (9). The height of the guide plate (7) and the connecting groove (9) is set according to the actual drilling operation requirements. The guide groove (8) on the guide plate (7) is connected to the connecting groove (9) on the second drill barrel (3). The guide plate (7) and the drill rod assembly (5) are detachably connected.

4. The specially designed water-cooled roller cone drill according to claim 2, characterized in that: The guide groove (8) is distributed in a circular structure, and the tilt angle of the high-pressure nozzle on the nozzle mounting hole (6) is the same as the tilt angle of the guide groove (8).

5. The specially designed water-cooled roller cone drill according to claim 1, characterized in that: The toothed wheel assembly (11) corresponds to the connecting groove (9), and the toothed wheel assembly (11) and the connecting block (10) are detachably connected.

6. The specially designed water-cooled roller cone drill according to claim 1, characterized in that: A sealing gasket (14) is installed on the lower surface of the abutment ring (13), and the abutment ring (13) is engaged with the snap-fit ​​groove (12).

7. The specially designed water-cooled roller cone drill according to claim 1, characterized in that: The center line of the fixing bolt (18) coincides with the center line of the through hole (17), and the first fixing block (15), the second fixing block (16) and the fixing bolt (18) do not contact the spiral guide plate (4).

Images