| 摘要 |
PURPOSE: A pleated bag filter for a large size dust collector or a portable dust collector is provided to enhance the filtration efficiency of the pleated bag filter by increasing the filtering area. CONSTITUTION: A pleated bag filter includes a bag cage(110) and a bag filter(120). The bag cage includes plural threads(112) and grooves(111) on the outer circumference of a cylinder shape formed inside the bag filter. The bag filter wrinkles the pleated bag filter into a screw thread shape to make the cylinder shape, to form plural filter threads(122) and filter grooves(121).
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