Process for the automatic rinsing of a unit for removing bacteria from milk

摘要

In the removal of bacteria from milk with the aid of a bacteria removal centrifuge (ultracentrifuge), two liquid streams arise of which one comprises milk from which bacteria have been removed and the other comprises the bacterial concentrate which is then sterilised and mixed with a part-stream of the milk from which bacteria have been removed. This mixture is then remixed with the remaining milk from which bacteria have been removed. When the unit is rinsed, the rinsing liquid is fed at two positions of the unit staggered in time, as a result of which the liquid streams flowing through the milk path and the concentrate path arrive at the same time at the mixing position for milk from which bacteria have been removed and sterilised concentrate. From this point, the mixture is no longer returned into the outlet line for milk from which bacteria have been removed, but is passed into the effluent duct. This avoids bacterial concentrate from having to be passed into the effluent duct because rinsing liquid has already been passed into the mixing position via the milk path, while bacterial concentrate is still flowing to the mixing position via the concentrate path.