| 摘要 |
A retainer (1), which is mounted on a cylindrical filter (20) that is fixed to a dust collector, is characterized in comprising: a venturi tube (5) that is fastened on the open end (17a) of the cylindrical filter (20); a base plate cap (8) that is disposed opposite the venturi tube (5) and is connected to the venturi tube (5) by multiple longitudinal rods (6); a connecting nut (9) that is fixed to the center of the base plate cap (8); an adjustment bolt (10) that is rotatably fastened to the connecting nut (9); multiple longitudinal extension rods (12) that penetrate multiple insertion holes (8a) bored in a circle at the margin of the base plate cap (8); and an extension unit (15) that has an extension base plate cap (11) to which the multiple longitudinal extension rods (12) are fastened and to which one end of the adjustment bolt (10) is rotatably fixed. |
