CONTROLLED RELEASE OF METERED QUANTITIES OF FINELY DIVIDED SOLIDS WITH A VENTURI NOZZLE AND REGULATED CONTROL

摘要

Apparatus and method for the controlled application of powdered material The invention relates to a method and apparatus for the controlled release of metered quantities of powdered materials with one or more regulated venturi nozzles 1 for the purpose of applying lubricant or separating compound to the stressed surfaces of pressing tools in tablet making machines or for applying finely divided solids to solid carrier materials particularly in the fields of pharmaceuticals, foodstuffs or catalysts. A valve 4 controlling the compressed airstream carrying the material is operated synchronously with objects or locations on a surface moving past the apparatus to which the material is to be applied.