Single-cabin ball mill type cement vertical mill grinding device

The utility model provides a single-cabin ball mill type cement vertical mill grinding device which mainly replaces a multi-cabin ball mill with a single-cabin finely-grinding ball mill and adds a coarse powder circulating device based on an existing grinding device composed of a cement vertical mill and a ball mill. The coarse powder circulating device is in series connection with a cement vertical mill material-discharging port and a single-cabin ball finely-grinding mill material-feeding port and positioned between the cement vertical mill material-discharging port and the single-cabin ball mill material-feeding port. Large material particles which are discharged by the cement vertical mill are enabled to return to an input end of the cement vertical mill and enter into the cement vertical mill to be ground again, accordingly an outer circulation is formed, and the problem that coarse materials enter into the ball mill is totally resolved. The single-cabin ball mill type cement vertical mill grinding devic