Pneumatic down-the-hole hammer slag discharge device

Abstract

The invention provides a deslagging device for a pneumatic down-hole hammer. The deslagging device comprises the pneumatic down-hole hammer, an air compressor, a deslagging barrel and a movable plate, wherein the air compressor is used for discharging compressed air to drive slag to move, the deslagging barrel is arranged above an impactor of the pneumatic down-hole hammer, the top end of the deslagging barrel is provided with a slag inlet which can be located in an orifice to be drilled and is lower that the orifice to be drilled, the bottom of the deslagging barrel is provided with a slag outlet, and the movable plate is arranged at the bottom of the deslagging barrel and can close and open the slag outlet. The deslagging device for the pneumatic down-hole hammer reduces moving distance of the slag, so the air flow of the compressed air is reduced, that is, the air supply amount of the air compressor is reduced, the power consumption required by deslagging is reduced, and then the drilling cost is lowered; meanwhile, the dust flying amount is effectively lowered, the working environment is optimized, and then the influences on health of operators and the service life of equipment are reduced.

Description

technical field [0001] The invention relates to the technical field of down-the-hole hammer slag discharge, and more specifically, relates to a pneumatic down-the-hole hammer slag discharge device. Background technique [0002] Railways, highways, bridges and other projects, in order to increase the bearing capacity and the ability to resist natural disasters, require foundation piles to be embedded under the fresh bedrock surface, usually using a down-the-hole hammer for construction. [0003] Pneumatic down-the-hole hammer is a kind of down-the-hole hammer powered by compressed air. The impact energy and impact frequency generated by it can be directly transmitted to the drill bit, and then driven by the rotary drive of the drill rig and drill pipe to form a pulsating crushing ability for rocks. At the same time, the compressed air discharged from the impactor is used to cool the drill bit and discharge the broken rock particles out of the hole, thus realizing the purpose ...

AI Technical Summary

Problems solved by technology

Therefore, the slag discharge capacity is completely dependent on the air flow rate of the air compressor. To enhance the slag discharge capacity, a larger air compressor must be configured, resulting in greater power consumption and higher drilling costs.

[0005] In addition, when drilling, the slag is directly discharged from the hole, there is a lot of dust flying, and the working environment is poor, which affects the health of the operator and the service life of the equipment

[0006] In addition, relying on the helical blades to discharge slag, as the drilling depth increases, the auger drill pipe continues to lengthen, which puts forward higher requirements for the drilling rig, resulting in higher drilling costs

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