WET GRINDING MILL Russian patent published in 1997 - IPC

FIELD: facilities used for chemical, pharmaceutical, paint and varnish and other branches of industry for comminution of organic and mineral materials in liquid medium in presence of grinding bodies. SUBSTANCE: wet grinding mill has body with cylindrical grinding chamber with double walls and grinding means located inside it. Driving shaft with blades is mounted along axis of grinding chamber. Radial pins connected with discharge device are located on grinding chamber inner wall. Pins are made as set of rings mounted in respect to each other with adjustable clearance. Value of clearance between rings is 0.2 - 0.5 of minimum diameter of grinding bodies. Pin height is equal to h = D - dS - (2 - 5) dGB with D - is inner diameter of grinding chamber, dS - is shaft diameter, dGB - is maximum diameter of grinding bodies and diameter of pin dp is equal to dp = H - (4 - 10) dGB with H - is space between blades. Inlet device has radial-slot form and one of rings, that form slot, has gear form. One more gear ring is additionally fixed on shaft bushing. Slot size is 0.5 - 0.7 of minimum diameter of grinding bodies. Pins are located in one axial plane or along screw-type line of grinding chamber surface and are connected with discharge device through valve. EFFECT: improved design. 6 cl, 4 dwg