| 摘要 |
An industrial dust filter has two concentric filter hoses (1) with the incoming dust impinging upon the outer hose outer face, which is retained by a steel ring (2). Dust also impinges on the inner face of the inner hose, which is secured at the top by a snap ring (3). The hoses are separated by a frame (4) with top end injector pipes (5) beneath jets (9). The injector pipe walls are strengthened by cross-pieces (7) and press the outer hose walls against the edges of the supporting structure (10), and the inner hose walls against the snap ring (3).
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