The utility model provides a step type
coal vibration sorting
machine which comprises a screening box and a transfer frame, a conveying frame is installed on the side, away from the transfer frame, of the screening box, a vibration excitation box is installed in the screening box, three
sieve plates are arranged on the inner wall of the vibration excitation box, and the three
sieve plates are installed on the inner wall of the vibration excitation box in a step mode.
Gangue outlets are formed in the positions, corresponding to the screen plates, of the side wall of the vibration excitation box, adjusting devices are arranged on the positions, corresponding to the screen plates, of the inner wall of the vibration excitation box, collecting devices are arranged on the positions, corresponding to the
gangue outlets, of the side wall of the screening box, and
butt joint devices are arranged on the positions, corresponding to the
gangue outlets, of the side wall of the vibration excitation box. An auxiliary box is installed at the bottom end of the screening box. The vibration excitation box in the screening box is used for carrying out vibration screening on
coal on the
sieve plates, the sieve plates in the whole vibration excitation box are placed in a stepped mode, and then the stepped
coal vibration sorting technology is achieved.