Chip-removing type core drill stem
A core drill and drill bit technology, which is applied in the direction of drill pipe, drill pipe, drilling equipment, etc., can solve the problems of drill bit wrapping, drill bit slippage, and affecting the working efficiency of drill pipe, and achieve the effect of solving slippage, improving work efficiency, and simple structure
Inactive Publication Date: 2014-07-30
孟书芳
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Problems solved by technology
When the existing well drill pipe is working, especially when drilling rocky strata, the drill bit is easily wrapped by rock powder, causing the drill bit to slip. The user needs to repeatedly pull the drill pipe up and down to manually remove debris, which seriously affects the work of the drill pipe. efficiency
Method used
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[0015] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0016] Such as Figure 1 to Figure 2 As shown, the chip-removing type core drill rod 1 of the present invention comprises a hollow connecting screw rod 2 and a solid cylindrical drill bit 3, a hollow jet cylinder 4 is arranged between the connecting screw rod 2 and the drill bit 3, the An air passage 21 is arranged inside the connecting screw 2 , and the air passage 21 communicates with the air injection cylinder 4 , and the air injection cylinder 4 is provided with an air injection hole array composed of air injection holes 41 .
[0017] Air injection holes 41 are spirally arranged on the side wall of the air injection cylinder 4 . This structu...
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The invention discloses a chip-removing type core drill stem. The chip-removing type core drill stem comprises a hollow connecting screw rod and a solid cylindrical drill bit, wherein a hollow air-injection barrel is arranged between the connecting screw rod and the drill bit; an air passage is formed inside the connecting screw rod; the air passage is communicated with the air-injection barrel; an air-injection hole array formed by air-injection holes is arranged on the air-injection barrel. According to the chip-removing type core drill stem disclosed by the invention, with adoption of the air passage inside the connecting screw rod and the air-injection hole array on the air-injection barrel, a user can inject high-pressure air into the air passage, and utilizes the air-injection holes to directly remove the chips around the drill bit, so as to effectively solve the drill bit slip problem, and improve the working efficiency of the well drill stem.
Description
technical field [0001] The present invention relates to a kind of geological equipment, more precisely, it is a chip removal type core drill pipe. Background technique [0002] In geological exploration activities, it is often necessary to sample rocks or cores, and it is necessary to use drill pipes for wells. When the existing well drill pipe is working, especially when drilling rocky strata, the drill bit is easily wrapped by rock powder, causing the drill bit to slip. The user needs to repeatedly pull the drill pipe up and down to manually remove debris, which seriously affects the work of the drill pipe. efficiency. Contents of the invention [0003] The invention mainly solves the technical problems existing in the prior art, thereby providing a chip-removing core drill pipe. [0004] Above-mentioned technical problem of the present invention is mainly solved by following technical scheme: [0005] A chip-removing core drill rod, the chip-removing core drill rod ...
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IPC IPC(8): E21B17/00
Inventor 孟书芳
Owner 孟书芳