Patent ID: 6318418
Filing Date: 2001-11-20
Classification: B65B,B65G,G01F

Abstract:
A metering apparatus (1) for pourable bulk material, comprising a substantially vertically disposed metering tube (11) and a valve device for the bulk material, disposed on an end (10) of the metering tube, the valve device comprises a gas-permeable ring element (13) which includes pores that leaves a product admission cross section free and is made to communicate in alternation with a negative-pressure source (22) and an overpressure source (28), each of which are coupled to a control device (25), a dispenser device (12) for the bulk material is disposed inside the metering tube (11), and that a pressure meter (30) is connected into a line (21) which connects the ring element (13) to the negative-pressure source (22) and to the overpressure source (28), the pressure meter is connected to the control device (25) and a measurement of the pressure meter value serves to trigger the overpressure source (28).