Duct apparatus for treating bulk material.

摘要

The invention relates to duct apparatus for the treatment of material such as agricultural produce stored in bulk, comprising a main duct 10 into which air or other treatment fluid can be introduced under pressure and a number of lateral ducts 13 from which the fluid passes into the material 11 heaped over the lateral ducts 13. For enabling mechanical handling means to enter the material store for filling or emptying it, the invention provides a form of lateral duct 13 that is telescopically contractible in length towards the main duct 10 so as to remove all or most of the obstruction presented by the lateral duct. The invention extends also to the duct apparatus as a whole in which some or all of the lateral ducts are of this telescopically contractible form.