Drilling tool convenient for core extraction
By setting up a fluid infusion tube and a bearing structure in the core extraction drill bit, the problem of the drill bit overheating and damaging the core is solved, and the integrity of the core is protected and it is convenient to remove it.
Patent Information
- Application Number
- CN202422891577.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing core extraction drilling tools are prone to damage the core structure due to overheating of the drill bit during drilling.
A drilling tool structure including a coring shell, a drill bit, a coring inner shell and a fluid infusion pipe was designed. Cooling liquid was delivered through the fluid infusion pipe to prevent the drill bit from overheating, and a bearing was used to ensure the smooth rotation of the coring inner shell. At the end of drilling, a movable baffle in the drill bit was used to squeeze the core to facilitate core removal.
This effectively prevents the core from being damaged by overheating of the drill bit, ensures the integrity of the core, and simplifies the core removal process.
Smart Images
Figure CN223398646U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of geological exploration, and more specifically, relates to a drilling tool that is convenient for core extraction. Background Art
[0002] Core extraction drilling tools play a vital role in geological exploration. A core, also known as a rock core, is a roughly cylindrical sample of underground material removed from the ground for testing. Core extraction drilling tools enable the extraction of rock cores without damaging their integrity.
[0003] Based on the above, core extraction drilling tools provide strong support for geological exploration and research. However, the core extraction drilling tools commonly used at present are prone to damage the structure of the core due to overheating of the drill bit when drilling the core, so a new type of core extraction drilling tool is now needed. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a drilling tool that is convenient for core extraction, so as to solve the problem that the core structure is sometimes easily damaged due to overheating of the drill bit during core drilling.
[0005] The utility model provides a drilling tool that is convenient for core extraction, which is achieved by the following specific technical means:
[0006] A drilling tool for core extraction, comprising a core shell, a drill bit, and a core inner shell;
[0007] The upper end of the coring shell is provided with a circular hole, and a connecting tube is connected to the circular hole at the upper end of the coring shell. Two groups of grooves are provided inside the coring shell, and the two groups of grooves inside the coring shell are respectively close to the upper and lower ends of the inner part of the coring shell. The coring inner shell is placed inside the coring shell, and a rotating shaft is fixedly connected to the upper end of the coring inner shell, and the rotating shaft passes through the connecting tube. A groove is provided at the lower end of the inner part of the coring inner shell. The drill bit is placed at the lower end of the coring inner shell, and the upper end of the drill bit is placed in the groove at the lower end of the inner part of the coring inner shell, and the drill bit is movably connected to the coring inner shell.
[0008] Furthermore, two groups of circular holes are provided at the lower end of the core taking shell, an infusion tube is provided inside the core taking shell, and the lower end of the infusion tube is placed in the two groups of circular holes at the lower end of the core taking shell, the upper end of the infusion tube passes through the upper end surface of the core taking shell, and an interface is connected to the upper end of the infusion tube.
[0009] Furthermore, a groove is provided on the outer side of the core taking inner shell near the upper end, and the outer groove on the upper end of the core taking inner shell corresponds to the inner upper end groove of the core taking outer shell, and a bearing is clamped between the outer groove on the upper end of the core taking inner shell and the inner upper end groove of the core taking outer shell.
[0010] Furthermore, a groove is provided on the outer side of the core taking inner shell near the lower end, and the outer groove on the lower end of the core taking inner shell corresponds to the inner lower end groove of the core taking outer shell, and a bearing 2 is clamped between the outer groove on the lower end of the core taking inner shell and the inner lower end groove of the core taking outer shell.
[0011] Furthermore, six groups of grooves are provided inside the drill bit, and a small connecting rod is provided in the internal groove of the drill bit, and a movable baffle is sleeved on the small connecting rod, and sixteen groups of grooves are provided at the arc of the movable baffle.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. The utility model provides a liquid infusion tube, which is conducive to placing the lower end of the liquid infusion tube in the two groups of circular holes at the lower end of the core shell. After the coolant is connected during drilling, the liquid infusion tube transports the coolant to the drill bit to prevent the drill bit from overheating and damaging the core structure.
[0014] 2. The utility model provides the first bearing and the second bearing, which are conducive to the stable rotation of the core inner shell during drilling.
[0015] 3. The utility model sets a drill bit. When drilling is completed and the drill rig rises, the movable baffles in the six groups of grooves inside the drill bit rub the core, so that the core is squeezed and broken. The drill bit is movably connected to the core inner shell. When the drill bit is removed, the core can be directly taken out, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the present utility model.
[0017] Figure 2 It is a schematic cross-sectional view of the core taking shell of the utility model.
[0018] Figure 3 It is a schematic cross-sectional view of the core removal inner shell of the utility model.
[0019] Figure 4 It is a schematic cross-sectional structural diagram of the drill bit of the utility model.
[0020] Figure 5 This utility model Figure 4 Schematic diagram of the structure after enlarging point A in the middle.
[0021] Figure 6 It is a schematic diagram of the structure of the core taking shell of the utility model when viewed from above after being cut away.
[0022] Figure 7 It is a structural schematic diagram of the infusion tube of the utility model.
[0023] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:
[0024] 1. Coring shell; 101. Connecting tube; 2. Drill bit; 201. Movable baffle; 202. Small connecting rod; 3. Rotating shaft; 4. Interface; 5. Infusion tube; 6. Bearing 1; 7. Bearing 2; 8. Coring inner shell. DETAILED DESCRIPTION
[0025] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0026] Example:
[0027] As attached Figure 1 To the attached Figure 7 As shown:
[0028] The utility model provides a drilling tool for core extraction, comprising a core extraction shell 1, a drill bit 2, and a core extraction inner shell 8;
[0029] A circular hole is provided at the upper end of the coring shell 1, and a connecting tube 101 is connected to the circular hole at the upper end of the coring shell 1. Two groups of grooves are provided inside the coring shell 1, and the two groups of grooves inside the coring shell 1 are respectively close to the upper and lower ends of the coring shell 1. The coring inner shell 8 is placed inside the coring shell 1, and a rotating shaft 3 is fixedly connected to the upper end of the coring inner shell 8, and the rotating shaft 3 passes through the connecting tube 101. A groove is provided at the lower end of the inner core of the coring inner shell 8, and the drill bit 2 is placed at the lower end of the coring inner shell 8. The upper end of the drill bit 2 is placed in the groove at the lower end of the inner core of the coring inner shell 8, and the drill bit 2 is movably connected to the coring inner shell 8.
[0030] Among them, such as Figure 2 and Figure 6 As shown, two groups of circular holes are provided at the lower end of the coring shell 1, and an infusion tube 5 is provided inside the coring shell 1, and the lower end of the infusion tube 5 is placed in the two groups of circular holes at the lower end of the coring shell 1, and the upper end of the infusion tube 5 passes through the upper end surface of the coring shell 1, and an interface 4 is connected to the upper end of the infusion tube 5. During use, the coolant is connected through the interface 4 at the upper end of the infusion tube 5, and the coolant is transported to the drill bit 2 through the infusion tube 5 to prevent the drill bit 2 from overheating.
[0031] Among them, such as Figure 2 and Figure 3As shown, a groove is provided on the outer side of the coring inner shell 8 near the upper end, and the outer groove on the upper end of the coring inner shell 8 corresponds to the inner upper end groove of the coring outer shell 1, and a bearing 1 6 is clamped between the outer groove on the upper end of the coring inner shell 8 and the inner upper end groove of the coring outer shell 1. A groove is provided on the outer side of the coring inner shell 8 near the lower end, and the outer groove on the lower end of the coring inner shell 8 corresponds to the inner lower end groove of the coring outer shell 1, and a bearing 2 7 is clamped between the outer groove on the lower end of the coring inner shell 8 and the inner lower end groove of the coring outer shell 1. During the core drilling process, the coring inner shell 8 is ensured to rotate smoothly by bearing 1 6 and bearing 2 7.
[0032] Among them, Figure 4 As shown, six groups of grooves are provided inside the drill bit 2, and a small connecting rod 202 is provided in the internal grooves of the drill bit 2, and a movable baffle 201 is mounted on the small connecting rod 202. Sixteen groups of grooves are provided at the arc on the movable baffle 201. When drilling the core, the movable baffles 201 in the six groups of grooves are squeezed. When drilling is completed, the drilling rig drives the utility model to rise. When rising, the movable baffles 201 in the six groups of grooves rub against the drilled core, causing the core to be squeezed and broken.
[0033] The specific usage and function of this embodiment are as follows:
[0034] In the present invention, the rotating shaft 3 at the upper end of the present invention is connected through the drilling rig, and the interface 4 is connected to the coolant. When drilling the core, the rotating shaft 3 drives the core inner shell 8 and the drill bit 2 to rotate, and the coolant is delivered to the drill bit 2 by the infusion pipe 5 to prevent the drill bit 2 from overheating and damaging the core structure. The rotation of the core inner shell 8 is guaranteed to be smooth by the bearing 1 6 and the bearing 2 7. When the drilling is completed, the movable baffle 201 in the six groups of grooves rubs against the drilled core when the motor rises, so that the core is squeezed and broken. The drill bit 2 is movably connected to the core inner shell 8. After the drill bit 2 is removed, the core can be directly taken out simply and conveniently.
[0035] Anything not described in detail in the present invention is well known to those skilled in the art.
Claims
1. A drilling tool for core extraction, characterized by: It comprises a coring outer shell (1), a drill bit (2) and a coring inner shell (8); The upper end of the core shell (1) is provided with a circular hole, and a connecting tube (101) is connected to the circular hole at the upper end of the core shell (1). Two groups of grooves are provided inside the core shell (1), and the two groups of grooves inside the core shell (1) are respectively close to the upper and lower ends of the core shell (1). The lower end of the core shell (1) is provided with two groups of circular holes. The interior of the core shell (1) is provided with an infusion tube (5), and the lower end of the infusion tube (5) is placed at the lower end of the core shell (1). The core inner shell (8) is placed in the two groups of circular holes of the core outer shell (1), and a rotating shaft (3) is fixedly connected to the upper end of the core inner shell (8), and the rotating shaft (3) passes through the connecting tube (101). The lower end of the inner core inner shell (8) is provided with a groove, the drill bit (2) is placed at the lower end of the core inner shell (8), the upper end of the drill bit (2) is placed in the groove at the lower end of the inner core inner shell (8), and the drill bit (2) is movably connected to the core inner shell (8).
2. A drilling tool for facilitating core extraction according to claim 1, characterized in that: The upper end of the liquid infusion tube (5) passes through the upper end surface of the core removal shell (1), and the upper end of the liquid infusion tube (5) is connected to an interface (4).
3. The drilling tool for facilitating core extraction according to claim 1, characterized in that: A groove is provided on the outer side of the core inner shell (8) near the upper end, and the outer groove on the upper end of the core inner shell (8) corresponds to the inner upper end groove of the core outer shell (1), and a bearing 1 (6) is clamped between the outer groove on the upper end of the core inner shell (8) and the inner upper end groove of the core outer shell (1).
4. A drilling tool for facilitating core extraction according to claim 3, characterized in that: A groove is provided on the outer side of the core inner shell (8) near the lower end, and the groove on the outer side of the lower end of the core inner shell (8) corresponds to the groove on the inner side of the lower end of the core outer shell (1), and a second bearing (7) is clamped between the groove on the outer side of the lower end of the core inner shell (8) and the groove on the inner side of the lower end of the core outer shell (1).
5. The drilling tool for facilitating core extraction according to claim 1, characterized in that: Six groups of grooves are provided inside the drill bit (2), and a small connecting rod (202) is provided in the internal groove of the drill bit (2). A movable baffle (201) is sleeved on the small connecting rod (202), and sixteen groups of grooves are provided at the circular arc on the movable baffle (201).