Different materials (concentration, temperature, tapping degree, ingredients) are evenly arranged in a special feeding box on a filter screen with gravity dehydration zone to remove free water, and then enter a "wedge" type dehydration zone, so that the material is subjected to mild extrusion of the upper and lower nets, and the free water in the material is continuously removed, so that the material completely loses its flow. The tension between fibers increases greatly, and the concentration of the material reaches 6-10%. Then it enters the cyclotron (adjustable range) dehydration zone to remove free and combined water from the material. The dehydration zone makes the concentration of the material reach 10-14%. Then it enters the pressing dehydration zone to force the removal of combined water and intracellular water from the material. So that the concentration of materials to more than 30%, through the discharge scraper to scrape material cake to the next process (such as material containing steam, the whole machine set up a closed hood, the steam out).