i88 Condensed Milk and Milk Powder 



Fig. 59. The Merrelt-Gere milk drier 



1 intake of milk, 2 vacuum pan, 3 jacket, 4 steam intake into jacket, 

 5- dome of pan, 6 vacuum pumps, 7 condenser, 10 water column, 11 over- 

 flow cistern for dry vacuum system, 12 discharge pipe of pan, 13 pump, 

 14 pressure gauge, 15 thermometer, 16 sight-glass, 17 regulating valve, 

 18 two-way draw-off cock for sampling, 19 reservoir, 21 desiccating cham- 

 ber, 22 spray jet, 23 force pump, 24 air pump, 25 compressed air, 26 air 

 drying chamber, 27 air heater, 28 stand-pipe, 29 drip valve, 30 depository 

 of part of powder, 31 outlet of powder, 32 rotary gate, 33 receptacle, 34 

 rotary dust collector consisting of tubular screen partitions, 35 openings 

 connecting with desiccating chamber, 36 head' closing tubular screen, 37 

 springs, 38 gear for rotating dust collector, 39 receptacle, 40 screw con- 

 veyor removing powder into 41 which is a chute, 42 automatic discharge 

 valve, 43 beater to remove adhering powder, 44 spring of beater, 45 rod, 

 46 toothed rack, 47 driving shaft, 48 suction pump to facilitate removal of 



