Patent ID: 9180389
Filing Date: 2015-11-10
Classification: B01D

Abstract:
1. A filter, comprising: an enclosure and a filter core mounted inside the enclosure, the filter core comprising a support and a filtering element entangled with the support, the enclosure being of a spherical form and comprising: a main body, an inlet passage mounted to an upper portion of the main body, an outlet passage mounted to a lower portion of the main body, and a ventilation tube mounted to a top of the main body, the filtering element being set in a spherically-shaped spiral so that the filter core has reduced filtering areas at a top and a bottom ends thereof and an enlarged filtering area at a middle portion; wherein the support has an outer circumference along which a plurality of retention bars is arranged, the retention bars being set horizontally, the plurality of retention bars each having an end connected to the support and an opposite end penetrating into the filtering element to improve mechanical strength of the filtering element.