A method for preventing the build-up of charged powder in the injector of a powder injection unit has an electrically insulated housing and metallic sleeve holding the delivery hose

摘要

The housing (2) has a connection (8) for the conductive hose (20) moulded in electrically insulating material but the powder is electrically charged through an electrically conductive sleeve (16) clamped by a metal nut (17) by which the powder is frictionally charged.