Abstract: A cryogenic freezer with an enclosed chamber into which a freezing fluid is directed through selectively controlled nozzles towards a propeller fan and baffle assemblage that is coaxial with a rotating drum having graduated perforations distributed about its periphery. The drum carries an endless belt which travels in a spiral path about the periphery of the drum and which defines tiers for carrying products to be processed. The freezing fluid passing through the nozzles is directed towards the discharge side of the propeller fan and is guided to the outside perimeter of the moving belt by the baffles. The freezing fluid passes across the product tiers and through the graduated perforations into the center of the drum where it is drawn upwardly by the fan and mixed with incoming freezing fluid.

Abstract: A sanitary pipeline mixer with a rotor and a stator disposed along a common axis within a turbine housing having an internal mixing chamber that communicates with an inlet port and a discharge duct. An inlet duct is removably connected to the turbine housing at the inlet port by means of a swing clamp for quick disassembly. The rotor is threaded to a shaft which extends through the mixing chamber, through a seal housing and is journaled in a bearing housing, the shaft being coupled to a motor shaft. A double flushed mechanical seal is provided about the rotor shaft at the interface of the turbine and seal housings. The turbine housing is removably mounted to the seal housing by means of a swing clamp for quick disassembly, the mechanical seal being exposed when the housings are disassembled.