An object of the present invention is to drive a scraping blade and a stirring screw conveyor at an optimum rotation speed according to each function by one power drive source, and to reduce grinding costs by efficiently grinding and fermenting a kitchen. To provide a waste disposal device.;The present invention is characterized in that the inside of the fermentation tank into which the kitchen waste is put, a stirring barrel having a grinding hole formed therein, a scraping blade for scraping up the kitchen waste deposited on the lower portion of the fermentation treatment tank in the stirring barrel, The kitchen waste, which is installed in the stirring barrel and scraped by the corresponding scraping blade, is crushed into the grinding hole while raising the inside of the stirring container, and is dispersed in the lower portion of the fermentation treatment tank at the inlet between the grinding hole and the upper end of the stirring barrel. A kitchen waste treatment apparatus having a stirring device composed of a stirring screw conveyor for dropping, comprising a transmission device capable of obtaining two concentric outputs with one input, connecting the input shaft with a drive shaft of a drive source, and a low speed output shaft among the output shafts of the transmission device. To the scraping blade, and the high speed output shaft to the stirring It is to connect with the comb Javea.
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