Coring bit

Abstract

The utility model relates to the technical field of rock drilling equipment, and discloses a coring drill bit which comprises a drill bit body, a coring inner cavity is formed in the drill bit body, a coring feeding channel is formed in the top end of the coring inner cavity, a rock core convenient sampling assembly used for taking broken rock cores is arranged in the coring inner cavity, and a coring feeding channel is formed in the top end of the coring feeding channel. A coring inner cavity is formed in the drill bit body, a convenient rock core sampling assembly is arranged in the coring inner cavity, when the drill bit body drills to an underground rock stratum with the specified depth, the coring inner cavity is provided with a coring hole, a coring hole is formed in the coring hole, a coring hole is formed in the coring hole, and a coring hole is formed in the coring hole. Through the arrangement of the coring feeding channel, the broken rock core in the drilling process of the drill bit body can enter the coring inner cavity through the coring feeding channel, sampling of the rock core at the designated position is completed, the rock core needed by a user is obtained, whether needed mineral resources exist at the position or not is determined according to follow-up analysis of the rock core sample, and use by the user is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of rock drilling equipment, in particular to a coring drill bit. Background Art

[0002] In conventional geological exploration, oil drilling, geological research and other scientific drilling, rock core is an important information carrier that can reflect the deep underground geological conditions, and rock core is obtained by coring drill bit. However, after using the coring drill bit, special coring tools are still needed to obtain the rock core, which is more complicated and inconvenient.

[0003] After searching, the authorized Chinese patent publication number CN 211692373 U discloses a coring drill bit, including a drill bit body, a through cavity in the drill bit body, a plurality of annularly distributed cutting pins are arranged on one end of the drill bit body, a plurality of annularly distributed first cutting pin protrusions are arranged on the outer side wall of one end of the drill bit body, a plurality of annularly distributed second cutting pin protrusions are arranged on the inner side wall of one end of the drill bit body, and a plurality of longitudinally distributed annular strip grooves are arranged on the inner wall of the through cavity. Beneficial effects of the utility model: the cutting pins, the first cutting pin protrusions and the second cutting pin protrusions are arranged on one end of the drill bit body of the utility model, the cutting pins, the first cutting pin protrusions and the second cutting pin protrusions are used to drill the core, the inner wall of the through cavity is provided with a plurality of longitudinally distributed annular strip grooves, the strip grooves reduce the contact area between the drill bit body and the core, reduce the friction force and thus facilitate the removal of the core.

[0004] The exploration drill bit in the above patent still has certain shortcomings. During rock drilling, the mineral-bearing rocks are generally in the broken zone. When a traditional drill bit is used for drilling, water must be added when the drill bit is grinding the rock. The added water flow will wash away the broken rock core, which will make it difficult to retrieve the broken rock core and find the mineral deposits, and the user's usage needs cannot be met. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a coring drill bit, which solves the problem that, during rock drilling, the mineral-bearing rocks are generally in the broken zone, and when the traditional drill bit is drilling, water must be added when the drill bit is grinding the rock, and the added water flow will wash away the broken rock core, which will result in the broken rock core cannot be taken out, making it difficult to find the mineral deposits and failing to meet the user's usage needs.

[0006] The utility model provides the following technical solutions: a coring drill bit, comprising a drill bit body, a coring inner cavity is arranged inside the drill bit body, a coring feeding channel is arranged at the top of the coring inner cavity, a core convenient sampling assembly for crushing rock cores is arranged in the coring inner cavity, a bottom connector is arranged at the bottom end of the drill bit body, and a connecting drill rod is threadedly inserted at the bottom end of the bottom connector;

[0007] The convenient core sampling assembly includes a channel closing head slidably inserted in the coring feed channel, the bottom end of the channel closing head is fixedly connected to a bottom connecting block, the bottom end of the channel closing head is provided with a bottom end groove, the middle part of the bottom connecting block is provided with a middle through hole, two push-pull rods are symmetrically arranged on both sides of the bottom end of the bottom connecting block, a driving motor is installed at the bottom end of the coring inner cavity, a lifting screw is fixedly connected to the output end of the driving motor, a lifting screw is provided at the top end of the lifting screw, the bottom end of the push-pull rod is vertically connected to the top end of the lifting screw, side limit rods are inserted through both sides of the lifting screw, and the bottom ends of the side limit rods are vertically connected to the bottom end of the coring inner cavity.

[0008] Preferred technical solution 1: A wireless signal receiver is installed on the side of the driving motor, and a power supply battery for supplying power to the driving motor is arranged on the side of the wireless signal receiver.

[0009] Preferred technical solution 2: Two side discharge ports are symmetrically provided at the bottom ends of both sides of the core taking inner cavity, and the opening threads of the side discharge ports are threadedly inserted with discharge port closing plugs.

[0010] Preferred technical solution three: A connecting plate for preventing falling off is provided at the top end of the lifting screw.

[0011] This solution can prevent the lifting screw sleeve from falling off when it moves upward on the lifting screw rod.

[0012] Preferred technical solution four: the diameters of the lifting screw and the connecting plate are smaller than the diameter of the bottom end groove.

[0013] This solution enables the top end of the lifting screw rod to be inserted into the bottom end groove without conflicting with the channel closing head when the lifting screw sleeve pulls the bottom end groove to move downward.

[0014] Preferred technical solution five: The end of the discharge port closing plug is provided with a cross groove for easy rotation.

[0015] This solution can make it more convenient for users to rotate and disassemble the discharge port closing plug.

[0016] Compared with the prior art, the utility model provides a coring drill bit, which has the following beneficial effects:

[0017] (1) The utility model provides a coring cavity on the drill bit body, and a core convenient sampling assembly is provided in the coring cavity. When the drill bit body drills to a rock layer at a specified depth underground, the user can drive the lifting screw by driving the motor in the core convenient sampling assembly, and the lifting screw pulls the channel closing head through the lifting screw sleeve, so that the coring feed channel is no longer closed by the channel closing head, so that the broken rock core in the drilling process of the drill bit body can enter the coring cavity through the coring feed channel, complete the core sampling at the specified position, smoothly take out the broken rock core, obtain the rock core required by the user, and determine whether there is the required mineral deposit at the location based on the subsequent analysis of the core sample, so as to facilitate the use of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the main cross-section of the structure of the utility model;

[0020] Figure 3 For the utility model Figure 2 A magnified view of the structure of the middle lifting screw sleeve;

[0021] Figure 4 For the utility model Figure 2 Enlarged view of the structure of the middle side discharge port.

[0022] In the figure:

[0023] 1. Drill bit body; 2. Coring cavity; 3. Coring feed channel; 4. Core convenient sampling assembly; 5. Bottom connector; 6. Connecting drill pipe;

[0024] 401, channel closing head; 402, bottom connecting block; 403, bottom groove; 404, middle through hole; 405, push-pull rod; 406, driving motor; 407, lifting screw; 408, lifting screw sleeve; 409, side limit plug; 410, wireless signal receiver; 411, power supply battery; 412, side discharge port; 413, discharge port closing plug. DETAILED DESCRIPTION

[0025] See also Figure 1-4

[0026] Embodiment 1: A coring drill bit comprises a drill bit body 1, a coring inner cavity 2 is arranged inside the drill bit body 1, a coring feed channel 3 is arranged at the top of the coring inner cavity 2, a convenient core sampling assembly 4 for taking broken cores is arranged in the coring inner cavity 2, a bottom connecting head 5 is arranged at the bottom end of the drill bit body 1, and a connecting drill rod 6 is threadedly inserted at the bottom end of the bottom connecting head 5.

[0027] The convenient core sampling assembly 4 includes a channel closing head 401 which is slidably inserted in the coring feed channel 3, the bottom end of the channel closing head 401 is fixedly connected to a bottom connecting block 402, a bottom end groove 403 is provided at the bottom end of the channel closing head 401, a middle through hole 404 is provided in the middle of the bottom connecting block 402, two push-pull rods 405 are symmetrically arranged on both sides of the bottom end of the bottom connecting block 402, and a driving motor 406 is installed at the bottom end of the coring inner cavity 2.

[0028] The output end of the driving motor 406 is fixedly connected to a lifting screw 407, a lifting screw sleeve 408 is sleeved on the top of the lifting screw 407, the bottom end of the push-pull rod 405 is vertically connected to the top of the lifting screw sleeve 408, side limit rods 409 are inserted through both sides of the lifting screw sleeve 408, and the bottom end of the side limit rod 409 is vertically connected to the bottom end of the core sampling cavity 2.

[0029] A wireless signal receiver 410 is installed on the side of the driving motor 406, and a power supply battery 411 for powering the driving motor 406 is set on the side of the wireless signal receiver 410. Two side discharge ports 412 are symmetrically opened at the bottom ends of both sides of the core taking cavity 2, and the opening threads of the side discharge ports 412 are inserted with discharge port closing plugs 413.

[0030] Embodiment 2: The difference between this embodiment and embodiment 1 is that a connection plate for preventing disengagement is provided at the top end of the lifting screw 407 .

[0031] This prevents the lifting screw sleeve 408 from falling off when it moves upward on the lifting screw rod 407 .

[0032] Embodiment 3: The difference between this embodiment and embodiment 1 is that the diameters of the lifting screw 407 and the connecting plate are smaller than the diameter of the bottom groove 403 .

[0033] When the lifting screw sleeve 408 pulls the bottom groove 403 to move downward, the top end of the lifting screw rod 407 can be inserted into the bottom groove 403 without conflicting with the channel closing head 401 .

[0034] Embodiment 4: The difference between this embodiment and embodiment 1 is that a cross groove is provided at the end of the discharge port closing plug 413 for easy rotation.

[0035] This makes it more convenient for the user to rotate and disassemble the discharge port closing plug 413.

[0036] In this embodiment, since the mineral-bearing rocks are generally in the broken zone during rock drilling, the traditional drill bit needs to add water when grinding the rock during drilling, and the added water flow will wash away the broken rock core, which will make it difficult to retrieve the broken rock core, making it difficult to find the mineral deposits, and cannot meet the user's usage needs.

[0037] In summary, in specific implementation, when the user needs to drill mineral rocks, the user first connects the connecting drill rod 6 of the device to the drilling rig, and drills the rock formation through the drill bit body 1 connected to the end of the drill rod 6. When the drill bit body 1 reaches the specified drilling depth or broken rock zone, the user can remotely send a start signal to the wireless signal receiver 410 installed on the side of the drive motor 406, thereby starting the drive motor 406.

[0038] The power supply battery 411 arranged on the side of the driving motor 406 can provide it with the electricity required for movement. The driving motor 406 drives the lifting screw 407 to rotate, and the lifting screw 407 pulls the lifting screw sleeve 408 mounted thereon to move. The lifting screw sleeve 408 drives the bottom end groove 403 to move from the coring feed channel 3 to the coring inner cavity 2 through the push-pull rod 405 connected to it, thereby opening the coring feed channel 3 opened in the middle of the top end of the drill bit body 1 and no longer being closed by the resistance of the bottom end groove 403.

[0039] As the drill bit body 1 continues to drill the rock formation, the drilled and broken rock core can enter the coring cavity 2 through the coring feed channel 3, so that the rock formation samples at the specified depth can be effectively sampled and the broken rock core can be smoothly taken out. After the drill bit body 1 is taken out of the ground, the user can rotate the discharge port closing plug 413 to open the opening of the side discharge port 412, so that the user can quickly and conveniently take out the broken sample core from the coring cavity 2, thereby obtaining the rock core required by the user, and according to the subsequent analysis of the core sample, determine whether there is the required mineral deposit at that location, which is convenient for the user to use.

Claims

1. A coring drill bit, comprising a drill bit body (1), characterized in that: The drill bit body (1) is provided with a coring inner cavity (2), the top of the coring inner cavity (2) is provided with a coring feed channel (3), the coring inner cavity (2) is provided with a convenient core sampling assembly (4) for taking broken cores, the bottom end of the drill bit body (1) is provided with a bottom connector (5), the bottom end of the bottom connector (5) is threadedly inserted with a connecting drill rod (6); The core convenient sampling assembly (4) comprises a channel closing head (401) slidably inserted in the coring feeding channel (3), the bottom end of the channel closing head (401) is fixedly connected to a bottom connecting block (402), the bottom end of the channel closing head (401) is provided with a bottom end groove (403), the middle part of the bottom connecting block (402) is provided with a middle through hole (404), two push-pull rods (405) are symmetrically arranged on both sides of the bottom end of the bottom connecting block (402), and the coring inner cavity ( 2) is installed at the bottom end of a driving motor (406), the output end of the driving motor (406) is fixedly connected to a lifting screw (407), the top end of the lifting screw (407) is sleeved with a lifting screw sleeve (408), the bottom end of the push-pull rod (405) is vertically connected to the top end of the lifting screw sleeve (408), side limiting rods (409) are inserted through both sides of the lifting screw sleeve (408), and the bottom end of the side limiting rod (409) is vertically connected to the bottom end of the core taking inner cavity (2).

2. A coring drill bit according to claim 1, characterized in that: A wireless signal receiver (410) is installed on the side of the driving motor (406), and a power supply battery (411) for supplying power to the driving motor (406) is arranged on the side of the wireless signal receiver (410).

3. A coring drill bit according to claim 2, characterized in that: Two side discharge ports (412) are symmetrically provided at the bottom ends of both sides of the core removal inner cavity (2), and the openings of the side discharge ports (412) are threadedly inserted with discharge port closing plugs (413).

4. A coring drill bit according to claim 3, characterized in that: The top end of the lifting screw rod (407) is provided with a connection plate for preventing it from falling off.

5. A coring drill bit according to claim 4, characterized in that: The diameters of the lifting screw (407) and the connecting plate are smaller than the diameter of the bottom end groove (403).

6. A coring drill bit according to claim 5, characterized in that: The end of the discharge port closing plug (413) is provided with a cross groove for easy rotation.

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