Central water tube gasifying and coal mining device

The invention discloses a central water tube gasifying and coal mining device. The central water tube gasifying and coal mining device comprises an outer ring subassembly and an inner ring subassembly, wherein the outer ring subassembly comprises an upper joint, a sealing ring, an upper outer barrel, a lower outer barrel and a shower nozzle; a pressing ring groove is formed in the upper end of the upper joint; a fixing screw is arranged in the middle of the upper joint; a swivel nut is arranged at the lower end of the upper joint; the bottom of the upper joint and the sealing ring are positioned in a welded manner; the upper outer barrel is in the shape of a hollow cylinder; the upper end of the upper outer barrel is in threaded connection with the swivel nut; a valve mechanism is arranged on the bottom of the upper outer barrel; the lower outer barrel is in the shape of a hollow cylinder; the upper end of the lower outer barrel is connected with the lower end of the upper outer barrel; the lower end of the lower outer barrel is connected with the shower nozzle; the inner ring subassembly comprises a water delivery tube, a cutting sleeve straight-through terminal joint, a middle water tube and an atomizing nozzle; hose clamps are arranged on the water delivery tube pairwise; a fixing screw is inserted in the hose clamps arranged pairwise, and is used for limiting axial movement of the water delivery tube; and a plurality of helical blades which are used for producing circles on delivered oxygen are uniformly distributed on the outer surface of the middle water tube in the peripheral direction. The central water tube gasifying and coal mining device has the advantages of simple structure, high temperature resistance, oxidation resistance, long descent continuous working period and the like.