The invention relates to the technical field of
acetaminophen feeding, and particularly provides a spiral feeder for preparing
acetaminophen, which comprises a premixing
barrel, a spiral feeding mechanism, an integrated
locking mechanism, a spiral quantitative feeding mechanism and a synchronous driving mechanism. The multiple spiral quantitative feeding mechanisms are matched with the rotating shaft in the premixing
barrel and the premixing conveying piece to conduct premixing spiral feeding on raw materials, when the raw materials are put into the reaction kettle, the spiral feeding
machine does not need to be continuously replaced to be connected with a feeding port of the reaction kettle, the problems that operation is tedious, and time and labor are wasted are solved, and the production efficiency is improved. The raw materials can be premixed before entering the reaction kettle, the
acetaminophen preparation efficiency is greatly improved, the rotating shaft drives the multiple material stirring sets to stir the raw materials in the corresponding feeding hoppers through the synchronous driving mechanism, and therefore the function of integrated driving of the rotating shaft and the multiple material stirring sets is achieved.