The present invention discloses a crushing and
solid-liquid separation device and a
garbage disposal device, wherein the crushing and
solid-liquid separation device includes a box body, the box body is provided with a feed port, a
discharge port located at the upper end thereof and a liquid
discharge port located at the lower end thereof, a spiral conveying shaft is vertically arranged in the box body, the spiral conveying shaft is connected to a driving device for driving its self-rotation, the spiral blades of the spiral conveying shaft are located in a
solid-liquid separation
barrel, the solid-liquid separation
barrel is located in the box body and is connected with the feed port, the
discharge port and the liquid discharge port, and the inner wall of the solid-liquid separation
barrel is provided with a cutter that forms a
shear force with the spiral blades on the spiral conveying shaft. This scheme enables the solid to move upward and the liquid to move downward to achieve solid-liquid separation, adopts the spiral blades and the cutter to cooperate to generate
shear force, and the conveying and crushing are synchronized. The entire device only needs one power source to achieve garbage crushing and solid-liquid separation, the device has high integration, small size, and is easy to process, and the equipment cost and use cost are low, which is convenient for application in homes, canteens, restaurants and other occasions.