Dust removal device for blowing pipeline of railway ballast bed

The utility model relates to the technical field of engineering equipment, provides a dust removal device for a blowing pipeline of a railway ballast bed, is applied to a railway ballast bed sewage suction truck, is matched with other sewage suction working devices to collect dirt such as scrap iron and dust, and solves the existing problems that the operation speed is low, the cleaning efficiency is low, and the cross section of the ballast bed cannot be completely covered. According to the technical scheme, the railway ballast bed air blowing pipeline dust removal device comprises an air blowing fan, a bottom frame, an air supply pipeline, an air blowing device and air blowing nozzles, the air blowing fan is fixed to the bottom frame, the air blowing fan is communicated with an inner cavity of the air blowing device through the air supply pipeline, and the air blowing fan provides an air source for the inner cavity of the air blowing device; the air blowing devices are arranged on the two transverse sides o