System for gradually pulverizing and drying water-containing materials

A solid-liquid separation equipment, comprising:

• a pulverizing and drying device comprising:
• a pulverizing device;
• and
• a drying device, wherein the pulverizing device and the drying device are connected to one another or are independent from one another;
• wherein the pulverizing device comprises:
• a pulverizing shell;
• a pulverizing inlet;
• a pulverizing main shaft;
• and
• at least one pulverizing impeller;
• wherein the pulverizing main shaft and the at least one pulverizing impeller are arranged in the pulverizing shell;
• wherein the at least one pulverizing impeller is configured to rotate around the pulverizing main shaft;
• wherein the pulverizing inlet is formed at an end of the pulverizing shell;
• wherein the end of the pulverizing shell where the pulverizing inlet is formed intersects with the pulverizing main shaft or an extension line of the pulverizing main shaft;
• wherein a gap is defined between an outer peripheral end of the at least one pulverizing impeller and a sidewall of the pulverizing shell;
• wherein the pulverizing main shaft of the pulverizing shell is parallel to a horizontal direction, and the pulverizing inlet is located above the pulverizing main shaft in a vertical direction;
• wherein the drying device comprises:
• a drying shell with a shape of a cylinder;
• an air inlet;
• a discharge port;
• a drying main shaft;
• at least one drying impeller;
• wherein the drying main shaft and the at least one drying impeller are arranged in the drying shell;
• wherein the at least one drying impeller is configured to rotate around the drying main shaft;
• wherein the air inlet and the discharge port are arranged on a sidewall of the drying shell;
• wherein the drying shell includes a first end and a second end, wherein the air inlet is arranged closer to the first end than to the second end;
• and
• wherein the discharge port is arranged closer to the second end than to the first end.