Multi-stage screening device used after ore crushing

The multistage screening device comprises a top plate, the top of the top plate is provided with a feeding port with the two ends communicated, a first screening net is arranged in the feeding port, supporting frames are arranged at the four corners of the bottom of the top plate, and the bottom end of the feeding port penetrates through the top plate and is located on the inner sides of the supporting frames; a screening box is arranged below the feeding port, a second screening net is fixedly assembled on the top of the screening box, two screening mechanisms are arranged below the second screening net, the two ends of each screening mechanism are fixedly assembled on the inner side wall of the screening box, and a collecting box is arranged below the screening mechanisms. The ore screening device has the beneficial effects that operation is easy and convenient, the screening effect is good, the screening plate does not need to be frequently replaced, the screening precision is high, and the ore processing