Patent ID: 7503128

Claim:
A hopper for dehumidifying loose particulate material, comprising: a container far the particulate material, which is provided, in an upper region, with a covering provided with a manifold for loading the hopper; a duct having an outlet provided on a bottom region of said container, said duct being functionally associable with a delivery of an air dehumidification device; an area for venting air that is present in said container, which is annular, lies around said manifold and is provided on said covering; air filtering means for filtering the venting air that comprise a filtering body provided with an annular filtering element which surrounds said manifold and is provided with an annular filtering surface that overlaps the venting area so as to prevent dust and particles present in the venting air from being aspirated through said venting area; and an annular volute suitable to collect the venting air from the container and which is integrated in said covering so as to surround said manifold, said annular volute having an air access constituted by the venting area whereby to connect said venting area to an intake of the air dehumidification device.