| 摘要 |
<p>The device has a cylindrical sealed enclosure (1) made of flexible materials and assembled by welding or adhering, where the sealed enclosure is perfectly removable for a regular maintenance. Length of the enclosure is greater than depth of the perfectly removable well, where the enclosure is made of flexible materials such as PVC, Polyurethane and neoprene. The assembly of the enclosure is made by adhering or welding based on the selected material. An upper part of the enclosure is equipped with an external emptying outlet (2) and a water inlet (3).</p> |
