Dewatering method in process of cut tobacco stem reconstitution

The invention relates to the technical field of consumer tobacco, in particular to a dewatering method in the process of cut tobacco stem reconstitution, which includes: extracting, solid-liquid separation, refilling, cut stem drying and cut stem expanding. The dewatering method is characterized by including the steps: firstly, cutting stems; secondly, sending the cut stem into a continuous extracting device; thirdly, subjecting the extracted cut stem to solid-liquid separation by a press; fourthly, subjecting the separated cut stem to secondary extraction by a conversion canister; fifthly, using a centrifuge for solid-liquid separation; sixthly, subjecting the separated cut stem to liquor refilling by spraying; seventhly, subjecting the cut stem, which contains 60-70% of water and subjected to liquor refilling, to water pretreatment so that the water content drops to 35%; and eighthly, drying and expanding to obtain finished cut stem which contains 13%+/-1 of water. Compared with theprior art, the method is high in extracting rate, internal quality of the cut stem is improved, harmful ingredients of the cut stem are reduced, dryness of the cut stem subjected to solid-liquid separation by the centrifuge is high, and difficulty and energy consumption in post-drying are decreased.