|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||406/14 ; 406/31 ; 406/79 ; 406/146|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 6 인용 특허 : 1|
A gravimetric metering apparatus with a constant throughput is enclosed inside a sealed chamber and connected through the wall of the chamber, by a first pipe, to a pneumatic conveyor line operating under a pressure of n bars and, by a second pipe, to an intermittentently operated external loading hopper. The chamber is filled with gas under a pressure of n bars which is equal to that inside the pneumatic conveyor line.
A device for supplying a powdery product in gravimetrically metered amounts and with a controlled throughput to a pneumatic conveyor line, comprising: (a) a gravimetric metering apparatus, having a hopper for holding the product to be supplied and which is, in use, closed at its upper end, and an extractor-discharger belt with a highly sensitive weighing device and a control element containing a micro-processor to regulate the speed of the extractor belt, in order to supply said product to said pneumatic conveyor line which operates under a pressure of n...