High-temperature and high-pressure continuous sterilization screw extrusion device suitable for high-moisture edible mushroom cultivation base material and application of high-temperature and high-pressure continuous sterilization screw extrusion device

The invention belongs to the technical field of extrusion devices, and particularly relates to a screw extrusion assembly, an extrusion device, a high-temperature and high-pressure continuous sterilization screw extrusion device suitable for a high-moisture edible fungus cultivation base material and application of the screw extrusion device. The screw extrusion assembly comprises a screw, and spiral pieces are arranged on the periphery of the screw. And the non-return piece is arranged on the screw rod in a sleeving manner and can prevent the materials extruded by the spiral sheet from reversely flowing. The non-return piece is additionally arranged on the screw rod with the spiral piece, materials extruded by the spiral piece can be prevented from reversely flowing along with rotation of the screw rod, and particularly, materials with large water content can only move in the downstream direction under the pushing and extruding effects of the spiral piece and the non-return piece, so that ...