| 摘要 |
The frame (9) of the machine is placed on the bottom (7) of the ditch (1). At the front of the machine, a folded perforated sheet (13) is drawn off a supply roll (12). The resultant U-shaped perforated filter is deployed to hold the filter material. The filter material, which is sand, gravel, plastic particles, etc., is fed to the filter area via a funnel (20). The filtered water is extracted via a drainage pipe (21). A flap valve (22) controls the movement of filter particles.
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