| 摘要 |
1. Device for web filters in which the filter material (2) is stretched in a cassette frame (3) consisting of a frame part (4), end wall parts (5) and a floor beam (6), which is insertable in a filter housing and is formed with one or more rows (7, 8) of filter bags (9) which form channels for the purified gas and which on their lower end (10) are closed and on their upper end (11) are stretched out by means of stiffening elements for the formation of a purified gas opening and for sealing to the purified gas channel of the filter housing in the frame part (4), characterised in that the stiffening elements (13) have an elongated shape and are positioned on the bag outlet sides along the length and/or height of the filter bags at various heights and longitudinally of the filter rows (7, 8) transversely of the filter bags (9) of each rows filter row, and these elongate stiffening elements are given a bow-shape, wave-shape, or zigzag-shape and the stiffening elements (13) cooperate with means (15, 16) for the resilient stretching of the filter material (2) on the side wall parts (5) and the floor beams (6) of the cassette frame (3). |
