When running, the lower part of the rake chain is immersed in water. Driven by the power unit, the rake chain makes a rotary motion to separate the debris in the liquid. When it runs to the upper part, due to the guide of the sprocket and the curved rail The function is to produce relative movement between Meizu rake teeth, most of the solid debris fall off by its own weight, and the other part of the debris sticking to the rake is cleaned by rubber brushes and removed by pressure washing water.

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