Multi-stage screening device for purifying wear-resistant quartz sand

The multistage screening device comprises a device body, a feeding port is formed in the outer surface of the upper end of the device body, a heat dissipation mechanism is arranged on the outer surface of one side of the feeding port, a two-way motor is arranged in the heat dissipation mechanism, a center shaft is arranged on the inner wall of the two-way motor, and the center shaft is connected with the feeding port. A spiral piece is arranged on the outer wall of the center shaft, mounting mechanisms are arranged on the inner surfaces of the two sides of the device body, and screening nets are arranged in the mounting mechanisms. According to the multi-stage screening device for purifying the wear-resistant quartz sand, heat dissipation can be effectively conducted on the two-way motor through the arranged heat dissipation mechanism, the situation that heat of the two-way motor is too high and cannot be dissipated is prevented, the service life of the two-way motor is effectively prolonged, people can more