Drilling orifice dust catching device

The utility model provides a drilling orifice dust catching device in order to solves the problems that a large amount of dust is produced by a conventional drilling machine in a coal drilling process, dust pollution can be caused easily, the working environment of coal mine is worsened, and health of a worker in the coal mine is damaged in the prior art. The drilling orifice dust catching device comprises a baffle fixed at the front part of a drill rod; when the drill rod is placed in a drilling state, a circle of a casing is arranged on the drill rod between the baffle and a coal wall; a circle of a sealing gasket attached to the coal wall is arranged on the casing; hard springs are arranged between the casing and the drill rod; a dust outlet is formed in the casing; the dust outlet is communicated with a dust collection box through a hose; and a negative-pressure generator is arranged between the hose and the dust outlet. The drilling orifice dust catching device can collect the dust produced in the drilli