Abstract: Solid-liquid separation equipment includes a pulverizing and drying device. The pulverizing and drying device includes a pulverizing device and a drying device connected with one another. The pulverizing device has a pulverizing shell, an inlet, a main shaft and impellers, and the main shaft and the impellers are arranged in the pulverizing shell. The impellers are configured to rotate around the main shaft. The inlet forms a sidewall of the pulverizing shell and is intersected with the main shaft or an extension line of the main shaft. A gap is defined between an outer peripheral end of the impeller and the wall of the pulverizing shell. The sludge is efficiently and deeply dried in a condition with no phase change. The sludge is graded, pulverized and dried. During the pulverizing and drying process, the water is liquefied and centrifugally separated, and the water is not completely phase-transformed and removed.