B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
B65B 3/30 (2006.01) B65B 3/32 (2006.01) F04B 11/00 (2006.01)
Patent
CA 2076062
ABSTRACT OF THE DISCLOSURE Dosing pumping of liquid-state contents for e.g. packaging containers results in a varying rate of flow in the product pipe, which entails pressure shocks which must at some stage be reduced with the aid of further devices, e.g. compensation vessels or the like. One way of pumping a pumpable product by means of a dosing pump unit (1) entails that two individually driven pump chambers (2, 3), which are connected with a common outlet (6), are controlled in such a way that the suction phases of the pump chambers overlap each other so that the total inflow to the pump unit is maintained constant. A pump unit to make this possible comprises two pump chambers (2, 3) which have a common in- and outflow (5, 6), which are controlled by a rotable valve body (4), whose inlet passage (18) surrounds such a large part of the circumference that it at the same time connects the inlet (5) with the pump chambers (2, 3).
Fini Alberto
Fontanazzi Paolo
Marks & Clerk
Tetra Brik Research & Development S.p.a.
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