Reduction in heat generation due to friction in pneumatic pump shaft and sealing housing assembly

Abstract

—The pneumatic screw pump is a conveying unit. It conveys the material at required distance, required height
with required pressure. Amount of the material is regulated using air amount mixed with mat erial and pressure is
regulated by controlling pressure of the air mixing with material.. The pump works on the high speed air flow pressure
variation principle. Factors affecting performance of the pump are heat generated inside the pump, pressure in the
pump, occurrence of negative pressure, leakages in the pump. The objective of this paper is to reduce the heat generated
in the pump by doing chrome plating of the shaft and modifications in seal housing assembly, as this is the maximum heat
generated area when checked experimentally. Surface finishing of the shaft also reduces the friction and thereby heat
generation.