The invention relates to a
powder pneumatic conveying multi-layer inspection flat screen device. The
powder pneumatic conveying multi-layer inspection flat screen device comprises a support, a multi-layer screen cage, a driving mechanism, a jacking mechanism and a rapid fixing mechanism. The multi-layer screen cage mechanism comprises a top cover, a material blocking screen cage, an air baffle, a filter screen cage, a flow guide plate and a material collecting seat
assembly, the top cover
assembly comprises a top cover body, a top cover lug and a feeding
pipe, the material blocking screen cage
assembly comprises a material blocking screen cage ring shell and a material blocking screen, and the air baffle assembly comprises an air baffle ring shell and an air baffle. The filter screen cage assembly comprises a filter screen cage ring shell and a filter screen, the flow guide plate assembly comprises a flow guide plate ring shell and a flow guide plate, and the material collecting seat assembly comprises a material collecting seat body, a material collecting seat lug, a partition plate, a pure material connector and an
impurity connector. The filtering length is increased through a reciprocating bent path, so that materials with very small aperture of a filtering screen on the filtering screen cage assembly can be screened cleanly, the
impact force on the filtering screen is small, the filtering screen is not easy to damage, and the screening rate is high.