This invention discloses an inlaid, patch-type, dual-track screening
machine and a dedicated cylinder, comprising a frame, a
power control box, an air source control box, a cylinder, a
chassis, a rotating track ring, a pressure ring, a main motor, a main
reducer, an auxiliary motor, an auxiliary
reducer, an inclined base, air pipes, and a
compressed air source. The cylinder is characterized by being composed of an upper ring and a lower ring. The lower ring has an annular outer track groove, a flat-blowing
pipe mounting hole, a guide groove, and a conveyor track mounting groove. The inner wall of the lower ring has a flat-blowing hole adapted to the flat-blowing
pipe mounting hole. The guide groove is connected to the first end of the outer track groove. The end of the outer track groove is connected to the track groove of the conveyor track fixed on the conveyor track mounting groove. A guide plate is provided on the inner side wall of the upper ring, with the inner end of the baffle at the bottom of the guide plate inserted into the inner track groove. A cover plate is provided on the top of the outer track groove. This invention features two annular track grooves, ensuring smooth operation and normal production of high-speed production lines.