Ceramic Filter Materials is composed of a porous body having two end faces and a peripheral surface separated from a neighboring body forming a plurality of main channels of purified fluid penetrating from one end face to the other end face, and a filter membrane configured on the inner wall of the main channels. The purified fluid, which flows into the main path from an opening on one end face side, is purified through the filtration membrane and the interior of the porous body and is removed as a purifying fluid from the peripheral surface of the porous body, or, The purified fluid flowing from the peripheral surface of the porous body is purified through the interior of the porous body and the filtration membrane and is removed as a purifying fluid from an opening on at least one end face side of the main flow path.
In other words, the amount of fluid permeability through the ceramic filter layer is proportional to the porosity of the filter and the square of the diameter of the capillary. Increasing the amount of binder, expanding the particle diameter distribution range, and so on, the porosity decreases and the fluid permeability decreases. Therefore, the amount of binder and particle diameter distribution should be used as the manufacturing conditions of the filter. The porosity of ceramic filter is 33±2%. Decreasing the thickness and increasing the diameter of pore can increase the permeability, but the dust collection efficiency decreases. In addition, also consider strength and other factors, and then select a variety of conditions.
Its characteristics lie in: The cross section shape of the plurality of main flow paths perpendicular to the purified fluid or the direction of the purified fluid flow path is arranged into a column with the specified pattern. The cross section shape of the specific isolation part perpendicular to the purified fluid or the direction of the purified fluid flow path is located between the columns of the adjacent main flow path (the first specific main flow path). The shape is surrounded by the shape formed by two parallel straight lines separated by the specified interval. The section shape of the first specific main road perpendicular to the purified fluid or the direction of the purified fluid flow path is a hepagon shape or polygon above it configured by the way of forming the two parallel lines between the specified side (reference side) facing the specific next part. And, in the two ends of the baseline edge intersecting edge for the second side and the third side, and the second side in and the opposite end of the baseline edge intersecting edge for the fourth side, and the third side in and the baseline edge of the opposite end intersecting edge for the fifth side, θ1, θ2, θ3, θ4(where, θ1, θ2, θ3, θ4 respectively represent the base edge and the second side of the Angle (θ1), the base edge and the third side of the Angle (θ2), the second side and the fourth side of the Angle (θ3), the third side and the fifth side of the Angle (θ4)) in the range of 110 ~ 160°, at the same time, The length of the reference side (A) and the maximum distance between the fourth side and the fifth side (B) satisfy the relation 0.3B≤A≤0.7B.