DUST COLLECTION FILTER

• Main Authors: SUMITA YUKIO, TAKAGI KOSUKE, KAWASHIMA YOSHIO
• Format: Patent
• Language: English; Japanese
• Published: 25.04.2019
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

To provide a dust collection filter which can suppress damage of a filter material in reverse washing and lowering of reverse washing performance by reverse flow of air.SOLUTION: A dust collection filter 1 includes a flat plate cylindrical filter part 3 having sheet-like filter materials 31 opposite to each other through a frame part 2, a first edge frame part 4 which is connected to one end side in a cylinder direction of the filter part 3 and has an air doorway 41, and a second edge frame part 5 which is connected to the other end side in the cylinder direction of the filter part 3, where the first edge frame part 4 is composed of a resin member that embeds one end side in the cylinder direction of the filter part 3 by being flown into a first edge frame part molding die to be cured, a width W1 in a filter material opposite direction of the air doorway 41 is set to be smaller than an opposite width W2 of the filter material 31, and a step part 42 that suppresses reverse flow of air blown into the filter in reverse washing is formed between the opposite surface of the filter material 31 and the air doorway 41.SELECTED DRAWING: Figure 2 【課題】逆洗時におけるフィルタ材の損傷や、エアの逆流による逆洗性能の低下を抑制できる防塵フィルタを提供する。【解決手段】集塵フィルタ１は、フレーム部２を介して対向するシート状のフィルタ材３１を有する平板筒形状のフィルタ部３と、フィルタ部３の筒方向一端側に連結され、且つエア出入口４１を有する第一縁枠部４と、フィルタ部３の筒方向他端側に連結される第二縁枠部５と、を備え、第一縁枠部４は、第一縁枠部成形型に流し込んで硬化させることでフィルタ部３の筒方向一端側を埋設する樹脂製部材で構成され、エア出入口４１のフィルタ材対向方向の幅Ｗ１は、フィルタ材３１の対向幅Ｗ２よりも小さく設定され、フィルタ材３１の対向面とエア出入口４１との間には、逆洗時にフィルタ内部に吹き込まれるエアの逆流を抑制する段差部４２が形成される。【選択図】図２