240 



MANUFACTURE OF MILK POWDER 



revolves to break up the film of dried milk as it leaves the drum. 

 This does not reduce the film to a powder, but causes the material 

 to be sufficiently broken up to allow it to fall into the receiver where 

 it can be easily handled for removal. 



Fig. 61. The Buflovak vacuum drum drier 

 Courtesy of Buffalo Foundry & Machine Company 



The receiver is a large cylindrical pan placed below the scraper 

 at the front of the machine. Observation glasses are placed so that 

 all internal parts may be seen while being operated. The receiver 

 is equipped at each end with a door of the full width of the receiver, 

 facilitating the rapid removal of the dried milk. 



Aside from the circulating pump for supplying the milk to the 

 feed pan, there is a condenser and a dry vacuum pump. Before 

 the vapors reach the condenser, they pass through a dust collector. 

 This is water-sealed and prevents the accumulation in the vapor 

 pipe of any dust that may escape from the drum and pass to the 

 condenser. 



