The material and processing stage that a kind of charging of feeding device crushes use plug screw feeder. The present invention relates to a kind of design entry and plug screw feeders, wherein at least 2 skewed slot (20a, 20b) is arranged to supplying material and feeding screw rod (10), this is arranged such that the exit cross-section (20a) of the cross section of each chute greater than 50% is located at that first sliding groove side supplies helical axis (CC) and the skewed slot of exit cross-section 1/10th seconds (20b) greater than 50% is located at feeding screw axis on the other side. Have big rectangle entrance insertion piece main body (11a) using filling rectangular inlet in the existing plug screw feeder of upgraded version, in addition to sliding slot (20a, 20b) passes through insertion main body (11a).
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