Agitating – Having interrelated feed and discharge means – Including means to monitor or control operation
Patent
1983-11-07
1985-06-18
Simone, Timothy F.
Agitating
Having interrelated feed and discharge means
Including means to monitor or control operation
101147, 366134, 366142, 366152, 366153, 366160, 366166, 366177, 366189, 366190, B01F 1502
Patent
active
045238545
ABSTRACT:
An apparatus for mixing the fountain solution used by lithographic printing presses includes a mixing tank and a pump unit for withdrawing the fountain solution from the tank and directing it into a distribution line that leads to several printing presses. Water for the fountain solution is supplied through a water line containing a solenoid valve. The additives, on the other hand, are pumped from drums into measuring containers located above the mixing tank, there being a separate measuring container and pump for each additive. Each measuring container has a solenoid valve at its bottom for releasing its additive into the tank when opened and a float switch for de-energizing its pump when the additive reaches a prescribed level in the measuring container. The water and additive valves, as well as the pumps, are controlled automatically, and to this end each measuring container has its own float switch, while the mixing tank contains high and low level float switches. As the pump unit for the mixing tank operates, it draws solution from the tank, and when the solution drops below the high level switch, the additive pumps are energized and supply additive to their respective measuring containers. Once the level of additive in any container reaches the float switch for that container, the additive pump stops. When the fountain solution in the mixing tank reaches the low level switch for the tank, the pump unit is de-energized and the water valve as well as the valves for the additive containers open. These valves remain open until the new solution, which is mixed in the tank, reaches the high level switch, whereupon the cycle is repeated.
REFERENCES:
patent: 3877682 (1975-04-01), Moss
patent: 3947356 (1976-03-01), Werhli
patent: 4146474 (1979-03-01), Kagatani
patent: 4165186 (1979-08-01), Tortorich et al.
patent: 4187029 (1980-02-01), Canale et al.
Simone Timothy F.
World Color Press, Inc.
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