Multi-stage vibration screening machine for plastic particles

The multi-stage vibration screening machine comprises supporting legs, a vibration groove body and a vibration motor, a plurality of mounting grooves are formed in the inner wall of the vibration groove body, the inner wall of each mounting groove is provided with a vibration screen matched with the corresponding mounting groove in an inserted mode, and a sliding groove communicating with the corresponding mounting groove is formed in the side wall of one side of the vibration groove body; a sliding plate is connected into each sliding groove in a sliding mode, and a plurality of limiting assemblies used for limiting the sliding plates are installed on the vibration groove body. The vibrating screen is inserted into the mounting groove, and the notch of the mounting groove is blocked through the sliding plate, so that the vibrating screen is fixed in the vibrating groove body, and when the vibrating screen needs to be disassembled, a worker only needs to relieve the limiting effect of the limiting assembly on