Cleaning equipment and cleaning method

The invention provides cleaning equipment. The cleaning equipment comprises multiple stages of cleaning units; the cleaning unit comprises a shell and a driving structure; the shell is provided with a cleaning cavity, a feed port, a discharge port, a liquid inlet and a liquid outlet, and the feed port, the discharge port, the liquid inlet and the liquid outlet are respectively communicated with the cleaning cavity; the discharge port of each stage of cleaning unit is communicated with the feed port of the next stage of cleaning unit; the liquid inlet of each stage of cleaning unit is communicated with the liquid outlet of the previous stage of cleaning unit; the driving structure comprises a material conveying piece, and the material conveying piece stretches into the cleaning cavity so as to convey materials from the feeding port to the discharging port. The invention further provides a cleaning method, and materials are cleaned through the cleaning equipment. According to the cleaning equipment, the flowing