| 摘要 |
The present invention relates to a filter used for water treatment, high-viscosity oil and high-viscosity slurry processes, etc., and provides an easily replaceable multi-layered filter comprising: a cylindrical depth filtration layer for forming various grades of pores using a synthetic resin or a ceramic material; a surface filtration layer which is located on the inside or outside of the depth filtration layer, and in which a folded body formed of a synthetic resin or metal protrudes in a circular arc shape and is folded; a pretreatment filtration layer which is formed on the outside of the depth filtration layer or on the outside of the folded body of the surface filtration layer, and which is in a pipe form made of non-woven cloth or fabric; a fastening cap which is located on each of the top and bottom of the pretreatment filtration layer, and fastens the top and bottom of the pretreatment filtration layer, thereby fastening each of the positions of the depth filtration layer, the surface filtration layer, and the pretreatment filtration layer. Therefore, processing raw water, from which foreign substances have been sequentially removed by the pretreatment filtration layer, the surface filtration layer, and the depth filtration layer, is finished as completely removed with the foreign substances inside the depth filtration layer, thereby improving filtration efficiency, increasing lifetime, and enhancing workability. |
