Mushroom bran crushing and screening all-in-one machine

The utility model provides a mushroom bran crushing and screening all-in-one machine, which relates to the technical field of mushroom bran screening and comprises fixing frames, a fixing plate is fixed between the tops of the fixing frames, a crushing box is fixed at the top of the fixing plate close to the edge of one side, and the bottom of the crushing box penetrates to the bottom of the fixing plate. Block-shaped mushroom bran is poured into a storage box, then flows into a material guide box through sieve holes and is preliminarily crushed through mutual occlusion of a first crushing roller, and the preliminarily crushed block-shaped mushroom bran flows into a second crushing roller and is crushed by the second crushing roller to obtain fine block-shaped mushroom bran; blocky mushroom residues obtained after crushing flow out of the crushing box through the guide plate, a loading wheel is fixed to one end, provided with a second belt wheel, of a second crushing roller, and the rotational inertia of the