| 摘要 |
The present relates to a vertical pump for ejecting fluid from a storage tank. A vertical pump having an apparatus for protecting a driving shaft according to an embodiment of the present invention includes an ejector casing for allowing fluid to flow therein or out therefrom, a driving motor including a driving shaft passing through the ejector casing, and an impeller coupled to the driving shaft for absorbing or ejecting the fluid, wherein the apparatus for protecting a driving shaft includes a protective pipe surrounding the driving shaft and having a pure water inlet through which pure water is input from pure water supply equipment, and a delay unit positioned in the protective pipe and for delaying a time taken to move the pure water to a low portion of the protective pipe. Thus, the pump efficiency can be prevented from being deteriorated due to a foreign substance inserted into the driving shaft, and the driving shaft can be prevented from being worn away so that the durability is improved. |
