| 摘要 |
A dust-cleaning nozzle comprising a trapezoidal body in the lesser base of which an opening is made, and in the larger base of the trapezoidal body a pipe with an upper slot and a lower one, with closers, is rigidly fixed. The upper slot of the pipe is superposed with a sucking slot of the trapezoidal body. The lower end of the lower slot of the pipe is arranged on the vertical axis of symmetry of the cross-section of the pipe, the upper edge of the lower slot is arranged on the tilt axis of the cross-section of the pipe at an angle α to the vertical axis of symmetry. A wear-resistant material is welded onto the upper edge and the lower edge of the lower sucking slot of the pipe, for example an alloyed metal with properties of chromium-tungsten or chromium-molibdenum steel with a hardness of 52-60 HRC. On the pipe above the upper edge of the lower slot n openings of the diameter m are made, and the connection of a spout of the dust-cleaning nozzle with a bushing of the dust-cleaning system is made with a power screw thread. |
