Stepless speed change interval-adjustable ball mill

The utility model provides a stepless speed change interval adjustable ball mill which comprises a supporting base, a first supporting plate, a second supporting plate, a ball mill body, a supporting shaft, a roller gear, a feeding cylinder, a feeding hopper, a driving gear, a supporting frame, a variable frequency driving motor, a discharging butterfly valve, a collecting and processing cylinder frame structure and a gearbox. The first supporting plate is welded to the left side of the upper end of the supporting base. The second supporting plate is welded to the right side of the upper end of the supporting base. A supporting shaft is welded to the left end of the ball mill body, and a feeding cylinder is welded to the right end of the ball mill body. The supporting shaft is installed on the upper portion of the interior of the first supporting plate through a bearing. The material collecting and processing device has the advantages that through the arrangement of the collecting and processing barrel frame