Core Drilling Rig Drill Pipe Lifting Liquid Injection Device

Abstract

A drill pipe lifting liquid injection device for a core drill comprises a main shaft connected with a drill pipe. The upper portion of the main shaft is sleeved with a mandrel. A sealing device is arranged between the outer wall of the lower portion of the mandrel and the inner wall of the main shaft. A limiting boss for limiting the sealing device is arranged on the inner wall, below the sealing device, of the main shaft. An adjusting pressing sleeve used for adjusting the sealing device and guaranteeing the water sealing effect is arranged on the sealing device. An installing window is arranged on the main shaft which is further provided with a drill pipe lifting buckle detaching mechanism. The drill pipe lifting liquid injection device is compact and simple in structure and convenient to disassemble and assemble, is installed at the upper end of the initiative drill pipe of the drill, can replace a faucet to achieve the situation that when the drill normally runs, flushing liquid flowing out of an earth surface slush pump is conveyed into a hole bottom drill pipe column through the device, the initiative drill pipe rotates, and a slip casting pipe does not rotate, and can also replace an elevator to normally take down a hole bottom drilling rig.

Description

technical field [0001] The invention relates to geological prospecting equipment, in particular to a drilling rod lifting and injecting device for a core drilling rig. Background technique [0002] At present, the lifter is a tool used to lift the drilling tool in the operation of lifting drilling tools in the market, and it needs to bear the weight of the bottom drilling tool; while the faucet is installed on the upper end of the active drilling rod and connected with the water pump with a hose. Its function is to send the flushing liquid discharged from the mud pump into the pipe string through the faucet, and enter the hole. When the active drill pipe rotates, the high-pressure rubber hose does not rotate, and at the same time, it must be able to withstand the bottom of the hole during normal drilling and pull-out. The weight of the drill. However, with the increase of drilling depth, on the one hand, the weight of the bottom hole drilling tool that the lifter and the fa...

AI Technical Summary

Problems solved by technology

However, with the increase of the drilling depth, on the one hand, the weight of the bottom hole drilling tool that the lifter and the faucet need to bear is also increasing, and the size and weight of the required faucet and the lifter are increased, and the structure becomes more complicated. It is bulky and repetitive, and it is easy to cause safety accidents; on the other hand, the combination of the traditional faucet and the lifter has a large installation range and is not easy to install, which seriously affects the utilization space of the drilling tower height

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