Feeding device of plastic particle screw extruder

The feeding device comprises an extrusion shell, a rectangular barrel is vertically installed at the top of the extrusion shell, an adjusting assembly is arranged in the rectangular barrel, an inlet is rotationally formed in the top of the rectangular barrel, an angle adjusting assembly is arranged on the inlet, a round opening is vertically formed in the bottom of the extrusion shell, and a feeding opening is formed in the top of the round opening. The feeding device of the plastic particle screw extruder is provided with a rotating plate and an electric push rod, and when materials in the rectangular barrel need to be controlled to enter the extrusion shell, the electric push rod rotationally installed on the inner wall of the rectangular barrel is started to push the rotating plate to rotate by an angle, so that the materials in the rectangular barrel can be controlled to enter the extrusion shell; when the two rotating plates get close to each other, the outlet becomes smaller, and when the two rotating p