FILTER DEVICE

PROBLEM TO BE SOLVED: To reduce trouble in maintenance work for a filter device and its cost while keeping its performance.SOLUTION: A filter device 10 comprises a cylindrical outer frame 20 having opening parts 25, 26 at one end side and the other end side respectively; a filter hanging-down part 30 arranged inside the outer frame 20 to support an upper end part 100t of a filter material 100 positioned in a plane crossing a direction connecting the opening part 25 on the one end side and the opening part 26 on the other end side to hang down the filter material 100; a fixing frame 40 fixed to the inside of the opening part 25 on the one end side with respect to the filter material 100 and abutted against the outer peripheral part of the filter material 100; a moving frame 50 arranged at the other end side with respect to the filter material 100 and arranged to be movable in a direction moving close to or moving away from the fixing frame 40 so as to hold the outer peripheral part of the filter material 100 between it and the fixing frame 40; and a moving frame driving part 60 for moving the moving frame 50 with respect to the fixing frame 40 in a direction moving close to or moving away from the fixing frame.SELECTED DRAWING: Figure 3 【課題】フィルタ装置としての性能を維持しつつ、メンテナンスの手間およびコストを低減する。【解決手段】フィルタ装置１０は、筒状をなし、一端側と他端側にそれぞれ開口部２５、２６を有した外枠２０と、外枠２０の内側に設けられ、一端側の開口部２５と他端側の開口部２６とを結ぶ方向に対して交差する面内に位置するフィルタ濾材１００の上端部１００ｔを支持してフィルタ濾材１００を吊下するフィルタ吊下部３０と、フィルタ濾材１００に対して一端側の開口部２５の内側に固定され、フィルタ濾材１００の外周部に突き当たる固定枠４０と、フィルタ濾材１００に対して他端側に配置され、固定枠４０に対して接離する方向に移動可能に設けられ、固定枠４０との間にフィルタ濾材１００の外周部を挟み込む移動枠５０と、移動枠５０を固定枠４０に対して接離する方向に移動させる移動枠駆動部６０と、を備える。【選択図】図３