Grain insect screening device

Abstract

This utility model relates to the field of grain screening technology, and in particular to a grain insect screening device, which includes a base, a hollow upper screen cylinder, a hollow lower screen cylinder, and a tray. The upper screen cylinder has a feed inlet at the top and a horizontally arranged screen plate inside, with a first screen hole on the screen plate. The lower screen cylinder is connected from top to bottom to a connecting cylindrical part, a screening part, a cylindrical insect collecting tube, and an insect collecting chamber. By setting a screen cylinder rotation mechanism and at least one set of screen cylinder vibration mechanisms, the screen cylinder rotation mechanism and the screen cylinder vibration mechanism can make the upper and lower screen cylinders reciprocate and rotate while vibrating strongly. When screening insects, it can effectively prevent stored grain pests with crawling characteristics from escaping the screen hole area, reduce the screening rate, increase the probability of grain powder passing through the screen holes, reduce the possibility of grain powder clogging the screen holes, alleviate the phenomenon of insect-powder adhesion, improve the separation effect of stored grain pests and grain powder, and significantly improve the insect screening efficiency.

Images