Page 123 - How It Works - Book of Amazing Answers To Curious Questions, 12
P. 123

Mouthpiece
                                                     chamber
                                                                                                           Mouthpiece
                                                     Milk phase
                                                     When air is drawn
                                                     out of the pulsation   Cluster unit                Rest phase
                                                     chamber inside the                                When air is pumped
                                                     teat cup, a vacuum   Consisting of four teat cups,   into the pulsation
                                                     (suction) is created   a claw, a long milk hose and   chamber inside the
                                                     around the teat.     a long pulse pipe, the cluster   teat cup, the lining
                                                     The pressure         unit draws milk from the cow   collapses, massaging
                                                     difference opens     into the main pipe system.   the teat and closing
                                                     the teat canal and                                  the teat canal.
                                                     draws the milk out.
                                                                                                    Pulsation chamber
                                                     Teat cups                                      Short milk pipe
                                                     Each cluster consists of
                                                     four teat cups themselves                       Long milk pipe
                                                     each made up of a metal                     A short milk hose connected to
                                                     shell, a rubber lining and a                the teat cup directs milk away
                                                     short milk pipe.                           from the cow to the claw where
                                                                                                 it's transported - together with
                                                                                                  the milk from other cows - to
                                                     Claw                                           the main milking pipeline.
                                                     Beneath the teat cups is the
                                                     claw, which connects the
                                                     short pulse pipe and milk
                                                     pipes to the main system's
                                                     long air pipes and long milk
                                                     pipes. Here air is added to the
                                                     milk to help it flow through                  Milking station
                                                     the system.
                                                                                                         Vacuum line
                                                     Pulsator (not shown)
                                                     The  pulsator is the valve  on a pipe
                                                     that's connected to the claw and
                                                     adjusts the air pressure in the
                                                     pulsation chamber. The pulsator
                                                     is attached to a main air pipeline
                                                     that feeds into the claw.


                                                     Milk pump (not shown)
                                                     A motor-driven milk pump                           Milk line
                                                     removes the collected milk from                 Vacuum pump
                                                     the main pipeline and transports
                                                     it to the receiver tank for chilling
                                                     and processing.    Cooling tank
                                                     How do you mill< a cow?


                                                     You'll need a mechanism unlike any udder

                                                          he milk is extracted using a vacuum   !milk phase) a vacuum is created, which
                                                          applied to the cow's teats. Milk   gently draws milk from the teat. When the
                                                     T  stored in the udder is drawn into a   chamber is filled with air !rest phase) the
                                                     system of pipes leading to a receiver tank   lining of the teat cup collapses and
                                                     where the milk is collected before being   massages the teat. Continued repetition of
                                                     passed to the cooling tank.    these phases not only aids milk production
                                                      A 'cluster' of four teat cups- each   by mimicking the action of a suckling calf, it
                                                     consisting of a stainless steel shell, a flexible   also promotes blood circulation.
                                                     rubber lining and a short pulse pipe- are   To help the milk flow away through the
                                                     attached to the teats. Between the outer   pipeline, once out of the cow the milk is
                                                     shell and lining is a pulsation chamber that   mixed with air added by a claw-the claw
                                                     collapses with the addition of air from a   connects the teat cups to the milk and
                                                     pulsator. When the chamber is devoid of air   pulse tubes.


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