Preparation equipment of seedling raising substrate taking bagasse as material

The utility model discloses equipment for manufacturing a seedling raising substrate by taking bagasse as a material. The device comprises a box body and a motor, a grinding chamber and a recycling chamber are formed in the upper end and the lower end in the box body correspondingly. A grinding disc is rotationally mounted at the bottom end in the grinding chamber through a sealing bearing; an extrusion ring is fixed to the middle of the inner wall of the grinding chamber through a fixing frame. A bevel groove is formed in the middle of the extrusion ring; the millstone is positioned in the bevel groove; a filter screen is fixed in the grinding chamber; the millstone penetrates through the middle of the filter screen; a connecting disc is rotationally installed in the middle of the upper end of the inner wall of the grinding chamber, the lower end of the connecting disc is connected with the upper end of the grinding disc, pressing plates are distributed on the outer side of the lowerend face of the connectin