Patent ID: 8231358
Filing Date: 2012-07-31
Classification: F04F

Abstract:
1. A vacuum ejector pump which is operated by compressed air supplied to or discharged from the pump at high speed, thus creating negative pressure in an outer surrounding space, the vacuum ejector pump comprising: a nozzle body, comprising: a frame having an air inlet pipe, a disc, and an air outlet pipe which are sequentially arranged to be spaced apart from each other, and integrally coupling the air inlet pipe, the disc, and the air outlet pipe to each other using bar-shaped spacers; and a nozzle mounted to pass through a center of the disc; a plurality of flexible valve members, each flexible valve member having a part which surrounds and holds each spacer and be firmly seated in a recess formed on each spacer, and easily mounted to each spacer; a cylindrical casing having a plurality of holes formed at positions corresponding to each valve member, and accommodating the nozzle body such that the nozzle body is in close contact with the casing, thus defining a chamber inside the spacers; and a locking structure provided on the casing and the nozzle body so as to prevent the casing, accommodating the nozzle body, from rotating around the nozzle body; wherein one end of the casing accommodates an end of the air outlet pipe, and is supported by a locking step of the air outlet pipe; and wherein the locking structure comprises a locking hole and a locking key which are formed on the end of the casing and the locking step of the air outlet of the nozzle body, respectively, such that the locking hole and the locking key engage with each other.