Patent ID: 8257456
Filing Date: 2012-09-04
Classification: B01D,B65G

Abstract:
1. A vacuum system using a filter cartridge, comprising: the filter cartridge, which includes: a container-shaped body having an interior space, which has an intake port, an inflow port for compressed air, and a mounting port in a sidewall thereof, and an upper opening of which is covered by a cap; a concentric inner wall, which includes an inflow hole extending from the inflow port to a nozzle in an inward direction, and a mounting hole formed so as to correspond to the mounting port; and a filter, which is fixedly cradled on an upper end of the inner wall, and filters air flowing in through the intake port; an ejector pump, which passes through the mounting port of the filter cartridge and the mounting hole, is installed such that one end thereof is adjacent to or inserted into the inflow port, and includes a through-hole formed in a nozzle body so as to communicate with the interior space of the filter cartridge; a negative pressure actuator, which is installed in communication with the intake port of the filter cartridge; and wherein the body further includes a second inflow port for compressed air formed adjacent to the inflow port so as to release a vacuum generated in the interior space, and the inner wall includes a second inflow hole which extends from the second inflow port to a second nozzle in an inward direction and communicates directly with the interior space, the interior space not being connected with the ejector pump.