Mineral prospecting cutting drill bit

Abstract

The utility model provides a prospecting cutting drill bit which comprises a drill bit base body and a main drill fixed in front of the drill bit base body, the main drill comprises a front hob disc and a top drill fixedly connected with the center of the bottom, one end of the top drill penetrates through the center of the hob disc and extends to the outer portion of the main drill, a rotating wheel structure is installed on the hob disc, and the rotating wheel structure is fixedly connected with the top drill. The rotary wheel structure comprises a rotary wheel and a bearing, the bearing is fixed in a groove of the hob disc, the rotary wheel is installed on the bearing, and main grinding tool bits are arranged on the rotary wheel and evenly distributed on the outer surface of the rotary wheel. Small-area center drilling is conducted firstly through the top drill, drilling of the main drill can be facilitated, and the drilling efficiency is improved. The main grinding tool bit on the rotating wheel structure can basically participate in the grinding process, the main grinding tool bit can basically have a larger contact area with a geological layer, and therefore the working efficiency of the drill bit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to a prospecting cutting drill bit. Background Art

[0002] Mineral exploration requires geological drilling, and the drill bit is very important. The main function of the drill bit is to break rocks. The rotary drill bit is the most commonly used drill bit. Driven by the machine, the rotary drill bit will rotate, thereby driving the entire drill bit to produce centripetal motion, and through cutting and grinding, the rock will crack and break, playing the role of downward drilling.

[0003] After searching, the existing announcement number CN220469803U is a special-shaped tooth high jet flat-top drill bit for drilling, including a head component, a drill body, special-shaped cutting teeth, conventional cutting teeth, a pulse jet nozzle, a straight jet nozzle, an outer ring blade and an inner ring blade on the drill body. The special-shaped cutting teeth and the conventional cutting teeth are arranged alternately on the outer ring blade, and different types of cutting teeth have the same cutting surface, which effectively improves the stability of the drill bit during operation. The inner and outer ring blades cooperate with each other to effectively improve the rock breaking efficiency. The straight jet nozzle mainly plays the role of hydraulic rock breaking, and the pulse jet nozzle has the function of changing the bottom hole flow field.

[0004] In the above device, since different types of cutting teeth have the same cutting surface, one part is worn out quickly while the other part is worn out slowly, which seriously affects the service life of the drill bit. In view of this situation, a drill bit with high efficiency and long service life is designed. Utility Model Content

[0005] The purpose of the utility model is to provide a prospecting cutting drill bit to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A prospecting cutting drill bit comprises a drill bit base, a main drill fixed in front of the drill bit base, the main drill comprising a top drill installed on the front cutter disc and fixedly connected to the bottom center, one end of the top drill extends through the center of the cutter disc to the outside of the main drill, the cutter disc is provided with a groove, a rotary wheel structure is installed in the groove, the rotary wheel structure comprises a rotary wheel, the rotary wheel is in an arc shape convex outwardly in the axial direction of the main drill, main grinding bits are installed on the rotary wheel, and the main grinding bits are evenly distributed on the outer surface of the rotary wheel.

[0008] Preferably, a cross groove is provided on the top of the drill bit base, and a first threaded hole is provided on the top of the drill bit base; a connecting head is sleeved in the cross groove, and second threaded holes are respectively provided in the connecting head corresponding to the positions of the four first threaded holes, and a bolt is threadedly connected to the second threaded hole and the corresponding first threaded hole.

[0009] Preferably, four of the rotating wheel structures are evenly mounted on the cutter disc, the bearing is fixedly mounted in the groove, and the rotating wheel is movably mounted on the bearing.

[0010] Preferably, protection blocks are respectively arranged on both sides of the rotating wheel, and the protection blocks are arranged on the cutter disc.

[0011] Preferably, there is a cross protrusion at the bottom of the connecting head, and the cross groove divides the top of the drill bit base into four blocks. The first threaded hole is opened on the block, and the cross protrusion at the bottom of the connecting head is adapted to the cross groove at the top of the drill bit base, and the top of the connecting head is fixedly connected to the power device.

[0012] Preferably, pulse jet nozzles and straight jet nozzles are alternately provided on the cutter disc, a drilling fluid flow channel is opened in the drill bit base, the pulse jet nozzles and the straight jet nozzles are alternately arranged between the two wheels, and the pulse jet nozzles and the straight jet nozzles are connected to the drilling fluid flow channel.

[0013] Compared with the prior art, the technical effects and advantages of the utility model are:

[0014] Setting up a top drill and first conducting small-area center drilling can facilitate main drilling and improve drilling efficiency.

[0015] By setting up the rotary wheel structure, the rotary wheel structure can rotate as the drill bit rotates. In this way, it can be ensured that the main grinding heads on the rotary wheel structure can basically participate in the grinding process. The main grinding heads can basically have a larger contact area with the geological layer, thereby improving the utilization rate of the grinding heads and greatly accelerating the working efficiency of the drill bit.

[0016] By providing the connecting part of the drill body, the drill base body and the connecting head can be conveniently connected, the structure is firm, and it is easy to install and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the connection between the drill bit base and the connector of the utility model;

[0019] Figure 3This is a top view of the main drill structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the rotary structure of the utility model.

[0021] In the figure: 1 drill bit base, 2 main drill, 3 top drill, 4 hob, 5 runner structure, 6 runner, 7 main grinding cutter head, 8 cross groove, 9 first threaded hole, 10 connector, 11 second threaded hole, 12 bolt, 13 protection block, 14 pulse jet nozzle, 15 straight jet nozzle, 16 drilling fluid flow channel, 17 bearing, 18 groove. DETAILED DESCRIPTION

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

[0023] Example:

[0024] See also Figures 1 to 4 , the utility model provides a technical solution:

[0025] A prospecting cutting drill bit, comprising a drill bit base 1, characterized in that it comprises a main drill 2 fixed in front of the drill bit base 1, the main drill 2 comprises a roller cutter disc 4 installed in the front and a top drill 3 fixedly connected to the bottom center, one end of the top drill 3 passes through the center of the roller cutter disc 4 and extends to the outside of the main drill 2, the roller cutter disc 4 is provided with a groove 18, a wheel structure 5 is installed in the groove 18, the wheel structure 5 comprises a wheel 6, the wheel 6 is arc-shaped in the axial direction of the main drill 2, a main grinding bit 7 is installed on the wheel 6, and the main grinding bits 7 are evenly distributed on the outer surface of the wheel 6.

[0026] By means of the above structure, the top drill 3 is used to first perform center drilling of a small area, which can facilitate the drilling of the main drill 2 and improve the drilling efficiency. The rotary wheel 6 is mounted on the bearing 17. When the drill bit rotates, the rotary wheel 6 also rotates accordingly, thereby ensuring that the main grinding heads 7 on each of the rotary wheels 6 can basically participate in the grinding process, thereby reducing the work tasks of each of the main grinding heads 7 and improving the utilization rate of the main grinding heads 7. At the same time, since the rotary wheel 6 is in an arc shape as a whole, the rotary wheel is not easily damaged during the rotation of the drill bit, and the main grinding heads 7 can basically have a larger contact area with the geological layer, thereby accelerating the working efficiency of the drill bit.

[0027] Furthermore, a cross groove 8 is provided on the top of the drill bit base 1, and a first threaded hole 9 is provided on the top of the drill bit base 1; a connecting head 10 is sleeved in the cross groove 8, and the connecting head 10 has second threaded holes 11 respectively provided at the positions corresponding to the four first threaded holes 9, and a bolt 12 is threadedly connected to the second threaded hole 11 and the corresponding first threaded hole 9.

[0028] By means of the above structure, the drill base 1 can be conveniently connected to the connecting head 10, the structure is firm, and it is easy to install and disassemble.

[0029] Furthermore, four rotating wheel structures 5 are evenly mounted on the hob 4 , the bearing 17 is fixedly mounted in the groove 18 , and the rotating wheel 6 is movably mounted on the bearing 17 .

[0030] By means of the above structure, the number of the main grinding bits 7 is directly increased, thereby improving the working efficiency of the drill bit.

[0031] Furthermore, protection blocks 13 are respectively provided on both sides of the rotating wheel 6 , and the protection blocks 13 are provided on the cutter disc 4 .

[0032] With the above structure, the protection block 13 is used to protect the rotating wheel structure.

[0033] Furthermore, there is a cross protrusion at the bottom of the connecting head 10, and the cross groove 8 divides the top of the drill bit base 1 into four blocks. The first threaded hole 9 is opened on the block. The cross protrusion at the bottom of the connecting head 10 is adapted to the cross groove 8 at the top of the drill bit base 1, and the top of the connecting head 10 is fixedly connected to the power device.

[0034] By means of the above structure, the connection between the connector 10 and the drill bit base 1 is ensured, and the power device provides power to the drill bit through the connector 10 .

[0035] Furthermore, pulse jet nozzles 14 and straight jet nozzles 15 are alternately arranged above the cutter disc 4, a drilling fluid flow channel 16 is opened in the drill bit base 1, and the pulse jet nozzles 14 and the straight jet nozzles 15 are alternately arranged between the two wheels 6, and at the same time, the pulse jet nozzles 14 and the straight jet nozzles 15 are connected to the drilling fluid flow channel 16.

[0036] By means of the above structure, the drill bit has the pulse jet nozzle 14 and the straight jet nozzle 15. The straight jet nozzle 15 mainly plays the role of hydraulic rock breaking, and the pulse jet nozzle 14 has the function of changing the bottom hole flow field, enhancing the disturbance of the bottom hole flow field, avoiding repeated cutting of rocks at the bottom of the well, and improving the mechanical drilling speed of the drill bit. The drilling fluid flow channel 16 provides drilling fluid for the pulse jet nozzle 14 and the straight jet nozzle 15, and the two jet drilling fluids in different ways.

[0037] The remaining undescribed parts of the present invention may be the same as the prior art, or are well-known technologies, or may be implemented by using the prior art, and will not be described in detail herein.

[0038] Although the 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 prospecting cutting drill bit, comprising a drill bit base (1), characterized in that: The drill bit (2) comprises a main drill (2) fixed in front of the drill bit base (1), the main drill (2) comprises a roller cutter disc (4) installed in the front and a top drill (3) fixedly connected to the bottom center, one end of the top drill (3) passes through the center of the roller cutter disc (4) and extends to the outside of the main drill (2), the roller cutter disc (4) is provided with a groove (18), a rotating wheel structure (5) is installed in the groove (18), the rotating wheel structure (5) comprises a rotating wheel (6), the rotating wheel (6) is in an arc shape convex outward in the axial direction of the main drill (2), a main grinding head (7) is installed on the rotating wheel (6), and the main grinding head (7) is evenly distributed on the outer surface of the rotating wheel (6); Pulse jet nozzles (14) and straight jet nozzles (15) are alternately arranged above the cutter disc (4); a drilling fluid flow channel (16) is opened in the drill bit base (1); the pulse jet nozzles (14) and the straight jet nozzles (15) are alternately arranged between the two wheels (6); and the pulse jet nozzles (14) and the straight jet nozzles (15) are connected to the drilling fluid flow channel (16).

2. A prospecting cutting drill bit according to claim 1, characterized in that: A cross groove (8) is provided on the top of the drill bit base (1), and a first threaded hole (9) is provided on the top of the drill bit base (1); a connecting head (10) is sleeved inside the cross groove (8), and second threaded holes (11) are respectively provided on the connecting head (10) at positions corresponding to the four first threaded holes (9); and bolts (12) are connected to the inner threads of the second threaded holes (11) and the corresponding first threaded holes (9).

3. A prospecting cutting drill bit according to claim 1, characterized in that: Four rotating wheel structures (5) are evenly mounted on the hob (4), a bearing (17) is fixedly mounted in the groove (18), and the rotating wheel (6) is movably mounted on the bearing (17).

4. A prospecting cutting drill bit according to claim 1, characterized in that: Protection blocks (13) are respectively arranged on both sides of the rotating wheel (6), and the protection blocks (13) are arranged on the hob (4).

5. A prospecting cutting drill bit according to claim 2, characterized in that: The bottom of the connector (10) is provided with a cross protrusion, the cross groove (8) divides the top of the drill base (1) into four blocks, the blocks are provided with the first threaded holes (9), the cross protrusion at the bottom of the connector (10) is matched with the cross groove (8) at the top of the drill base (1), and the top of the connector (10) is fixedly connected to the power device.

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