Centrifugal sand grain separation device and implementation method

The invention relates to a centrifugal sand grain separation device and an implementation method. The centrifugal sand grain separating device comprises a speed regulating motor, a feeding device, a discharging device, a primary separation device, a secondary separation device, a collecting device and a conveying device. The primary separation device consists of a bulk material disc and a bulk material range controller, wherein the bulk material disc is a steel conical barrel or a steel disc connected with a main shaft of the motor, and the bulk material range controller consists of a steel cylinder and a steel truncated cone cylinder. The secondary separation device is a bulk material disc connected with the main shaft of the motor, the size of the bulk material disc is greater than thatof a primary bulk material disc, and the secondary separation device is a steel disc or a steel fan blade capable of adjusting angles. The centrifugal sand grain separation device can effectively separate sand grains with the grain size more than or less than certain grain size (a controlled diameter) so that separated sand materials meet the requirements on engineering application. The centrifugal sand grain separation device has the advantages of the separation of thick and thin sand grains, high automation degree, time and labor saving, simple structure, durability, easy repair, large treatment quantity and high separation efficiency.