Suction device, bag emptying device and a method for extracting bulk material

Abstract

The invention relates to a suction device (9) for extracting bulk material from a container, particularly a flexible, bag-like container, comprising a suction head with at least one, preferably several, suction openings (18) that can be inserted into the bulk material for extracting the bulk material. The invention solves the problem of providing a suction device (9) that enables the complete emptying of a container filled with bulk material, especially even bulk material with low flowability, by means of a conveying device (20) arranged on the suction head, with at least one conveying unit (22) for conveying the bulk material towards the at least one suction opening (18), wherein the at least one conveying unit (22) rests on the bulk material when the suction opening (18) is inserted into it. The invention further relates to a bag emptying device with a suction device and a holding device (9), as well as a method for extracting bulk material.