Integrated drilling tool for geological drilling

Abstract

The utility model relates to an integrated drilling tool for geological drilling, which is characterized in that an impactor is connected with a drilling rod, the drilling rod is connected with a drilling device through a sealing sleeve, the sealing sleeve is provided with an inner cavity, both ends of the inner cavity are provided with air passing holes, a one-way valve is arranged between the two air passing holes, and a high-pressure air hole, a ventilation hole, the inner cavity, a straight air hole and an inclined air hole are sequentially communicated. By utilizing the one-way conduction characteristic of the one-way valve, the one-way valve is in a closed state and cannot be conducted reversely under the condition of closing the introduction of high-pressure gas, so that the damage of a drill rod, a wind pressure system and a whole rock drill system caused by reverse backflow of dregs can be avoided.

Description

Technical Field

[0001] The utility model belongs to the field of geological exploration drilling tools, in particular to an integrated drilling tool for geological drilling. Background Art

[0002] Geological drilling is the use of deep drilling mechanical engineering technology to search for and mine underground natural mineral resources, or to take real-world cross-sections of strata and extract physical samples to provide experiments and obtain relevant data.

[0003] Traditional drilling tools usually have air holes on the drill bit and drill rod for passing high-pressure gas for cooling and slag removal. In actual production, the high-pressure gas must be turned off before the drill rod is withdrawn. Since residual airflow and air pressure are likely to remain inside the borehole, the airflow will carry slag back when the drill rod is withdrawn, causing damage to the drill rod, air pressure system and the entire rock drill system, reducing the service life and work efficiency of various components of the rock drill system. In addition, the maintenance, disassembly and installation process is cumbersome, resulting in low sampling efficiency of sampling personnel, which brings a series of problems to actual production. Utility Model Content

[0004] (1) Technical problem to be solved: In view of the defects of the existing technology, the present invention aims to solve the problem of how to prevent the reverse flow of slag from causing damage to the drill rod, air pressure system and the entire rock drill system.

[0005] (2) The technical solutions adopted by this utility model are as follows:

[0006] An integrated drilling tool for geological drilling includes an impactor, a sealing sleeve, a drill rod and a drill, wherein the impactor is connected to the drill rod, and the drill rod and the drill are connected via a sealing sleeve. A high-pressure air hole is provided on the impactor, and a ventilation hole is provided at the center of the drill rod. The sealing sleeve has an inner cavity, and air holes are provided at both ends of the inner cavity. A one-way valve is provided between the two air holes. A straight air hole and an oblique air hole are provided in the drill, and the high-pressure air hole, ventilation hole, inner cavity, straight air hole and oblique air hole are connected in sequence.

[0007] A further technical solution is that an impact tail is provided at one end of the impactor, a connecting key is provided at the front end of the impact tail, a limiting retaining wall is provided at the front end of the connecting key, two sealing grooves are provided at the front end of the limiting retaining wall, a high-pressure air hole is provided between the two sealing grooves, and a first threaded hole is provided at one end of the impactor connected to the drill rod, and the end of the drill rod is located in the first threaded hole and is threadedly connected to it.

[0008] A further technical solution is that an alloy column is provided on the end face of the head of the drill, and a slag discharge groove is provided on the side face of the drill.

[0009] A further technical solution is that a second threaded hole is provided at one end of the sealing sleeve connected to the drill rod, the end of the drill rod is located in the second threaded hole and threadedly connected thereto, and a first sealing gasket is provided between the end of the drill rod and the inner wall of the second threaded hole.

[0010] A further technical solution is that a third threaded hole is provided at one end of the sealing sleeve connected to the drill, the tail of the drill is located in the third threaded hole and threadedly connected thereto, and a second sealing gasket is provided between the tail of the drill and the inner wall of the third threaded hole.

[0011] A further technical solution is that the one-way valve includes a sealing ball arranged in the inner cavity at the air hole near the drill rod, the diameter of the sealing ball is larger than the diameter of the air hole, the sealing ball is connected to the spring, and the end of the spring is fixed to the cavity wall of the inner cavity.

[0012] (3) Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] The impactor is connected to the drill rod, and the drill rod and the drill are connected through a sealing sleeve. The sealing sleeve has an inner cavity, and air holes are provided at both ends of the inner cavity. A one-way valve is provided between the two air holes. The high-pressure air hole, ventilation hole, inner cavity, straight air hole and oblique air hole are connected in sequence. The one-way valve has the one-way conduction characteristic. When the high-pressure gas is closed, the one-way valve is in a closed state and cannot be reversed, which can avoid the reverse backflow of residue and damage to the drill rod, air pressure system and the entire rock drill system. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the overall structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the head structure of the drill of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0018] like Figure 1-Figure 3An integrated drilling tool for geological drilling includes an impactor 1, a sealing sleeve 2, a drill rod 3, and a drill 4. The impactor 1 is connected to the drill rod 3, which are connected to the drill rod 3 and the drill 4 via the sealing sleeve 2. The impactor 1 is provided with a high-pressure air hole 6, and the drill rod 3 is provided with a ventilation hole 7 in the center. The sealing sleeve 2 has an inner cavity 8, with air holes 9 at both ends of the inner cavity 8. A one-way valve 10 is provided between the two air holes 9. The drill 4 is provided with a straight air hole 11 and an oblique air hole 12. The high-pressure air hole 6, the ventilation hole 7, the inner cavity 8, the straight air hole 11, and the oblique air hole 12 are sequentially connected.

[0019] Before geological exploration begins, the impactor 1's spline is installed on the rock drill. The drill rod 3, sealing sleeve 2, and drill 4 are connected. The rock drill and air pump are turned on, and drilling begins. High-pressure gas flows through the high-pressure air port and the vent hole 7 of the drill rod 3 to the one-way valve 10 in the sealing sleeve 2 (at this point, the high-pressure gas can pass through the one-way valve 10), and finally through the straight air hole 11 and the inclined air hole 12 to the end face of the drill 4. The rock drill is then started, driving the impactor 1, drill rod 3, sealing sleeve 2, and drill 4 to begin drilling and complete the drilling operation. Due to the one-way conduction property of the one-way valve 10, when the high-pressure gas flow is turned off, the one-way valve 10 is closed and cannot flow in the reverse direction. This prevents the reverse flow of debris, which could damage the drill rod 3, the air pressure system, and the entire rock drill system.

[0020] One end of the impactor 1 is provided with an impact tail 13, and the front end of the impact tail 13 is provided with a connecting key 14, and the front end of the connecting key 14 is provided with a limiting retaining wall 15, and the front end of the limiting retaining wall 15 is provided with two sealing grooves 16, and a high-pressure air hole 6 is provided between the two sealing grooves 16. The end of the impactor 1 connected to the drill rod 3 is provided with a first threaded hole 17, and the end of the drill rod 3 is located in the first threaded hole 17 and is threadedly connected to it. By designing the impact tail 13, the end of the impact tail 13 is not likely to be piled up when the rock drill is performing impact and vibration, thereby improving the service life of the connecting mechanism. The end face of the ordinary impact tail 13 is easily piled up, causing the connecting mechanism to be scrapped and difficult to remove. A limiting retaining wall 15 is provided on the outer wall between the high-pressure air hole 6 and the connecting key 14, which effectively controls the problem of displacement of the connecting mechanism during the impact and vibration process; the sealing grooves 16 are a group, and a high-pressure air hole 6 is provided in the center, which effectively prevents high-pressure air leakage and reduces pressure.

[0021] An alloy column 18 is provided on the end face of the head of the drill 4 , and a slag discharge groove 19 is provided on the side face of the drill 4 .

[0022] A second threaded hole 20 is provided at one end of the sealing sleeve 2 connected to the drill rod 3. The end of the drill rod 3 is located in the second threaded hole 20 and is threadedly connected thereto. A first sealing gasket 21 is provided between the end of the drill rod 3 and the inner wall of the second threaded hole 20. The first sealing gasket 21 provides a seal between the end of the drill rod 3 and the inner wall of the second threaded hole 20. The threaded connection between the sealing sleeve 2 and the drill rod 3 facilitates disassembly and installation.

[0023] A third threaded hole 22 is provided at one end of the sealing sleeve 2 connected to the drill 4. The tail of the drill 4 is located in the third threaded hole 22 and is threadedly connected thereto. A second sealing gasket 23 is provided between the tail of the drill 4 and the inner wall of the third threaded hole 22. The second sealing gasket 23 plays a sealing role between the tail of the drill 4 and the inner wall of the third threaded hole 22. The drill 4 and the sealing sleeve 2 are threadedly connected for easy disassembly and installation.

[0024] The one-way valve 10 includes a sealing ball 24 provided at the air hole 9 near the drill rod 3 in the inner cavity 8. The diameter of the sealing ball 24 is larger than the diameter of the air hole 9. The sealing ball 24 is connected to a spring 25. The end of the spring 25 is fixed to the cavity wall of the inner cavity 8. When high-pressure gas is introduced, the high-pressure gas will push the sealing ball 24 open. At this time, the spring 25 is compressed. When the high-pressure gas is turned off, the sealing ball 24 blocks the air hole 9 under the action of the spring 25 to prevent the residue from flowing back.

[0025] The above are only preferred embodiments of the present invention.

Claims

1. An integrated drilling tool for geological drilling, characterized in that: The invention comprises an impactor (1), a sealing sleeve (2), a drill rod (3) and a drill (4), wherein the impactor (1) is connected to the drill rod (3), and the drill rod (3) and the drill (4) are connected via the sealing sleeve (2). The impactor (1) is provided with a high-pressure air hole (6), and the center of the drill rod (3) is provided with a ventilation hole (7). The sealing sleeve (2) has an inner cavity (8), and both ends of the inner cavity (8) are provided with air holes (9). A one-way valve (10) is provided between the two air holes (9). The drill (4) is provided with a straight air hole (11) and an oblique air hole (12), and the high-pressure air hole (6), the ventilation hole (7), the inner cavity (8), the straight air hole (11) and the oblique air hole (12) are connected in sequence.

2. The integrated drilling tool for geological drilling according to claim 1, characterized in that: One end of the impactor (1) is provided with an impact tail (13), a front end of the impact tail (13) is provided with a connecting key (14), a front end of the connecting key (14) is provided with a limiting retaining wall (15), a front end of the limiting retaining wall (15) is provided with two sealing grooves (16), a high-pressure air hole (6) is provided between the two sealing grooves (16), and one end of the impactor (1) connected to the drill rod (3) is provided with a first threaded hole (17), and the end of the drill rod (3) is located in the first threaded hole (17) and is threadedly connected to the first threaded hole (17).

3. The integrated drilling tool for geological drilling according to claim 1, characterized in that: An alloy column (18) is provided on the head end face of the drill (4), and a slag discharge groove (19) is provided on the side face of the drill (4).

4. The integrated drilling tool for geological drilling according to claim 1, characterized in that: A second threaded hole (20) is provided at one end of the sealing sleeve (2) connected to the drill rod (3); the end of the drill rod (3) is located in the second threaded hole (20) and is threadedly connected thereto; a first sealing gasket (21) is provided between the end of the drill rod (3) and the inner wall of the second threaded hole (20).

5. The integrated drilling tool for geological drilling according to claim 1, characterized in that: A third threaded hole (22) is provided at one end of the sealing sleeve (2) connected to the drill (4); the rear end of the drill (4) is located in the third threaded hole (22) and is threadedly connected thereto; a second sealing gasket (23) is provided between the rear end of the drill (4) and the inner wall of the third threaded hole (22).

6. The integrated drilling tool for geological drilling according to claim 1, characterized in that: The one-way valve (10) includes a sealing ball (24) provided in the inner cavity (8) at the air hole (9) near the drill rod (3), the diameter of the sealing ball (24) being larger than the diameter of the air hole (9), the sealing ball (24) being connected to a spring (25), the end of the spring (25) being fixed to the cavity wall of the inner cavity (8).

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