モーノポンプの粉体供給特性

抄録

The constant feeding performance of a Mohno pump for several kinds of dry powder was examined. The suction pressure of the operating Mohno pump was measured to estimate the feeding mechanism. The results show that the feeding performance depends on the suction pressure and the mechanical strength of the powder arch that was formed at the inlet of the pump. As a result, the powder with the weaker arch strength and the higher pressure drop across the arch is easily sucked into the pump. Then, the feeding performance of the Mohno pump can be estimated from the permeability of air across the powder bed and the unconfined yield strength of the powder bed that indicate the mechanical strength of the arch.