POWDER SPRAYER WITH AUTOMATIC POWDER SUPPLY SYSTEM

摘要

A powder supply system for a powder sprayer having a powder scontaining housing with a discharge opening and a roller mounted within the opening for metering the discharge of powder from the housing. The powder supply system includes first and second conduits connecting the powder supply hopper and housing, a pressurized air operated venturi tube in the first conduit for generating airflow in the first conduit for drawing powder from the hopper and directing it through the first conduit and into the housing, and a second pressurized air operated venturi tube in the second conduit for drawing excessive powder from the housing and directing it through the second conduit for return to the hopper. A control is provided for automatically operating the powder supply system in timed relation to operating time of the powder sprayer. -32600