Cascade pump, comprises endless drive belt with closure parts rotating around ring between pump entrance and exit sections

摘要

Fluid pressure is increased in a ring-shaped pump body comprising a large number of closure parts (S) rotating around a circular ring (Rg). The closure parts can be engaged with the ring are secured to an endless drive belt (Rm) driven by an external motor and exiting the high pressure region via an exit channel (A) in close contact with the belt. The closure parts are in the open position in the pump entrance section (I) and in the closed position in the pump exit section (E). The belt and ring can travel at the same speed as each other, or alternatively the belt travels faster than the ring and the closure parts are rolls that rotate at high speed in the pump entrance section and at a lower speed in the exit section.