Patent ID: 8061523
Filing Date: 2011-11-22
Classification: B02B,B07B

Abstract:
1. A purifier in which a plurality of sieve layers stacked each other are accommodated in a sieve box as being mounted in an inclined manner, the sieve box is supported by at least four legs onto a support base as a non-vibration component, the sieve box is coupled to a vibration generating device so as to be able to vibrate in a longitudinal direction of the sieve box and communicates with a unit of supplying a material required to be screened on an upstream side of the sieve box and an overtail discharge unit on a downstream side of the sieve box, a collecting device that collects powder particles falling through sieves is provided below the sieve box, and an air distribution chamber is provided above the sieve box, the air distribution chamber sucking air passing from a lower portion to an upper portion of the sieves, wherein the air distribution chamber is configured of paired inclined surfaces formed as being tapered upward and has a suction passage formed as a horizontal cyclone placed above the air distribution chamber, a plurality of barrier walls are provided in the air distribution chamber in a direction perpendicular to a longitudinal direction of the sieve layers, the air distribution chamber is sectioned by the barrier walls into a plurality of chambers, and rectifying plates are further provided to the air distribution chamber at a narrow position between the paired inclined surfaces to prevent non-uniformity of suction of powder on the sieve layers.