Efficient grinding device for laboratory ore sample preparation

The invention belongs to the technical field of preparation equipment, and particularly discloses an efficient grinding device for laboratory ore sample preparation. Supporting frames of the device are fixed to the two ends of the upper portion of a rack, and a motor is fixed to the lower portion of the rack. The bowl body frame is of a plate-shaped structure and is vertically arranged between the two supporting frames above the rack, the two sides of the bowl body frame are connected with the supporting frames through elastic connecting pieces, and the eccentric wheel is rotationally arranged in the center of the bowl body frame and is connected with a belt wheel on a motor driving shaft through a belt; mounting holes are symmetrically formed in the positions, on the two sides of the eccentric wheel, of the bowl body frame, the grinding bowl is detachably embedded into the mounting holes, the bowl body fixing mechanism is hinged to one side of the bowl body frame and corresponds to the mounting holes, a posi