Device for apportioning fluid quantities to be delivered periodically

摘要

The invention relates to a device for apportioning quantities of fluid to be delivered periodically, preferably at high frequency, for example 100 Hz, having two rotating control elements (7) which are each assigned to a passage opening (11) for the fluid, and two sharp-edged (20, 21) separate regions (17, 17') of which one (17) opens the opening (11) and the other (17') closes it, the control element (7) being driven at the same rotational speed but with separately controllable phase position of the control edges (20, 21) in relation to the passage opening (11). A reliable and simplified arrangement results if the passage openings (11) and the control elements (7) assigned respectively to these are arranged behind one another in the flow direction of the fluid. <IMAGE>