Manual de-bagging screening machine by an integrated dust removal system and direct unloading sieve structure, and suitable for screening large quantities of particles less dry materials, dry sieved bulk input positive or negative pressure systems, or direct input feed machine. After a batch of the material cast into the feeding station to switch off the door so that the screening process carried out in a closed environment, can effectively reduce dust flying late into the working environment. Labor costs, material loss, the number of cycles and the possibility of dust explosion at the end is reduced.

     It can also connect the pipeline and the existing dust collection more effective and thus reduce the flying dust at the end.