Abstract

A cryogenic freezing chamber assembly provided with improved stress resistance caused by thermal expansion and contraction, improved cryogenic fluid utilization, better means for viewing activity therein and easy assembly and disassembly.

IPC Classes  ?

• B02C 11/08 - Cooling, heating, ventilating, conditioning with respect to temperature or water content

Abstract

An impact mill including a base portion on which is disposed a rotor rotatably mounted in a bearing housing, the rotor having an upwardly aligned cylindrical surface portion coaxial with the rotational axis. The impact mill is provided with a mill casing within which is located a conical track assembly which surrounds the rotor to form a conical grinding path. The mill casing is provided with a downwardly aligned cylindrical collar which may be axially adjusted to set a grinding gap between the rotor and the mill casing. The rotor is provided with a plurality of impact knives complementary with a plurality of impact knives disposed on the inside top surface of the mill casing. In addition, the impact mill can be formed of separated conical sections. Finally, power is transmitted to the rotor of the impact mill by a synchronous sprocketed belt, accommodated by a sprocketed drive sheave.

IPC Classes  ?

• B02C 13/00 - Disintegrating by mills having rotary beater elements