| 摘要 |
PURPOSE:To decrease energy and to improve the recovery property of a carrier in a fluid tank by forming the carrier of a hollow body which consists of a freely expandable and contractable material and is so formed as not to allow leakage of the gas included therein to the outside and to vary the apparent sp. gr. thereof with a change in external pressure. CONSTITUTION:The carrier is the hollow body 1 which consists of the freely expandable and contractable material and is so formed as not to allow leakage of the gas 2 included therein to the outside and to vary the apparent sp. gr. of the carrier with a change in the external pressure. More specifically, the sp. gr. of the carrier is below the sp. gr. of water or is of the value approximate thereto in the fluid tank where the flow of the carrier is necessary. The sp. gr. of the carrier increases to 1 or above and the carrier is liable to settle in a recovering tank where the sepn. of the carrier is necessary. The carrier contributes to a decrease of aeration energy and permits extremely easy recovery of the carrier. |
