DRYING-GRINDING DEVICE Russian patent published in 1994 - IPC

FIELD: production of building materials. SUBSTANCE: device is adapted for charging, separation of stones, mixing, fine grinding and preliminary drying of building mortars for obtaining fine-grinding pressed powder having predetermined moisture content and consistency, which may be subsequently used for pressing. Device has frame with roller supports and drive drum mounted on roller supports. Drum has armored lining, end covers, feeder, discharge device, grinding members disposed within drum, heat-carrier feeding device and drive. One of end covers has window for feeding material to be ground. Feeder has inclined deflector, removable shingle separator and side window with inclined vertical discharge channel. Heat-carrier feeding device is mounted within feeder branch pipe so that common mixing chamber is formed. Mixing chamber is communicated with drum cavity through pipeline. Front blind cover of drum is supported by frame roller supports through axial shaft. Drum casing and armoring members of armored lining have through windows disposed in lower front part and adapted for discharge of pressed powder and through windows disposed in upper part and adapted for discharge of waste gases. The windows are defined from outside by concentric rings formed as strand disposed in detachable collector, which embraces it. Collector is also provided with upper and lower windows for discharge of waste gas and pressed powder, respectively. EFFECT: increased efficiency and enhanced reliability in operation. 3 cl, 7 dwg