FILTRATION DEVICE AND FILTER ELEMENT

摘要

A filtration device including: a casing; a first partition wall which partitions the inside of the casing into a first raw fluid chamber and a filtered-fluid chamber; cylindrical filter elements provided inside the filtered-fluid chamber and of which the inside communicates with the first raw fluid chamber to let fluid pass through from inside toward outside to filter the fluid; a second partition wall provided on the other end of the filter elements to form a second raw fluid chamber; a wash pipe connected to an end of the filter element to let fluid flow from the raw fluid chamber in the axial direction to wash the filter elements; and a wash fluid drain pipe which discharges trapped substances, wherein the other end of the filter element connected to the wash pipe is always open to the raw fluid chamber.

主权项

1. A filtration device comprising:
a casing having a fluid inlet into which fluid flows from outside and a fluid outlet from which fluid filtered inside thereof flows to the outside; a first partition wall which partitions the inside of the casing into a first raw fluid chamber communicating with the fluid inlet to store fluid before being filtered, and a filtered-fluid chamber communicating with the fluid outlet to store filtered fluid; a filter element having a cylindrical shape open at both ends and provided inside the filtered-fluid chamber in such a manner that one end thereof is fitted and held in a through hole formed in the first partition wall, and inside thereof communicates with the first raw fluid chamber to let fluid pass through from the inside to the outside so as to filter the fluid; a second partition wall provided on the other end side of the filter element in parallel with the first partition wall, which fits and holds the other end of the filter element in a through hole to form a second raw fluid chamber communicating with the first raw fluid chamber, and partitions the inside of the casing into the filtered-fluid chamber and a second raw fluid chamber; a wash pipe connected to at least one end side of the filter element to cause fluid to flow in an axial direction of the filter element from the first or second raw fluid chamber via the other end of the filter element to wash the filter element; and a wash fluid drain pipe connected to a discharge side of the wash pipe to discharge, to the outside of the casing, trapped substances removed by washing the filter element, wherein the other end of the filter element connected to the wash pipe is always open to the first or second raw fluid chamber.