▎ 摘　　要

NOVELTY - The device comprises a crusher main body (100), a first motor and a second motor. The crusher main body whose bottom end is provided with a sieving mechanism. The sieving mechanism is provided with a slide way (210). A bottom end of the slide way is inserted with a connecting slide rod (211). The middle part of the connecting sliding rod is fixedly connected with a screen (212). The bottom end of the connecting sliding rod is fixedly connected with a guide plate (213). A bottom end of a moving rod is fixedly connected with a spring. The bottom end of the first spring is fixedly connected with an inner wall of a first elastic groove. The top end of the first connecting rod and left end of the second connecting rod form a second linkage mechanism through the conical gear. USE - The device is useful for graphene production. ADVANTAGE - The device: can avoid the large particle material mixed in the small particle material, affecting the quality of the whole material; can directly sieving the material; improves the working efficiency of the user; avoids the user again the large particle material to the crusher main body feeding port; avoids the dust of the material dispersed in the air; recovers and uses the material in the filter screen by user; improves the utilization rate of the material; and has strong practicability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a crushing and screening device and using method thereof. DESCRIPTION OF DRAWING(S) - The drawing shows a front sectional view of the crushing and screening device useful for graphene production. Crusher main body (100) Slide way (210) Connecting slide rod (211) Screen (212) Guide plate (213)