The utility model provides a laboratory is with portable silt machine, it relates to processing experiment technical field. The utility model discloses a current mill of solution is native, soil screening equipment is bulky, the noise is big, makes the experimenter have inconvenient problem in operation process more. The utility model discloses a servo motor, driving pulley, a conveyor belt, the driven shaft, the screen cloth, go out the hopper, the storage tank, a machine support, the driving shaft, from the driven pulleys and a set of blade, the upper end of storage tank is equipped with outthe hopper, the lower extreme setting that goes out the hopper is in the jar mouth of storage tank, be equipped with the screen cloth in the last port of play hopper, the up end that goes out the hopper is equipped with detachable screening cover, detachable screening cover's the vertical cartridge in middle part has the driven shaft, the lower extreme rigid coupling of driven shaft has a set ofblade, the upper end rigid coupling of driven shaft has from the driven pulleys, servo motor's output shaft and driving shaft are connected, the rigid coupling has driving pulley on the driving shaft,driving pulley passes through the drive belt with from the driven pulleys and is connected. The utility model is used for the silt experiment.