| 摘要 |
A device for filtering ballast water which performs filtering by installing a filter element having a conical shape in a concentric circle direction inside the device for filtering ballast water that accommodates a filter portion, and introducing ballast water from a lower end of the device for filtering and passing same through the filter element inside the device for filtering, and for discharging backwash water containing foreign substances that are inside a filter by ways of differential pressure, which is created by a driving portion communicating with a filter element by rotating an aspiration portion that is located on the lower end of the device for filtering. In particular, the present invention relates to a candle-type device for filtering ballast water, wherein the driving portion is positioned on a lower portion of the housing so that more filter elements can be accommodated inside the housing. |
| 主权项 |
1. A candle-type ballast-water filtering device, comprising:
a housing having an inlet portion and an outlet portion that allows ballast water to flow into and out of a vessel; a filter portion located in the housing to filter original ballast water introduced through the inlet portion; and an automatic washing portion washing foreign substances off of the filter portion, wherein the automatic washing portion is located in a lower portion of the filtering device, and comprises a suction portion that sucks backwash water containing foreign substances attached to the filter portion, a driving portion that is connected to the suction portion to rotate the suction portion, and a discharging portion that accommodates a side of the suction portion and discharges backwash water sucked by the suction portion, the filter portion comprises one or more filter elements for filtering and backwashing, the filter elements arranged along concentric paths around a driving shaft of the driving portion, the suction portion comprises one or more flushing arms that rotate around the driving shaft by the driving portion to communicate with the respective filter elements on the concentric paths of the filter portion and thereby receive backwash water, the driving portion is located in a lower portion of the housing to be connected to the suction portion via the driving shaft, and the discharging portion comprises a back-pressure prevention tank on one discharge line that is provided under the suction portion to communicate therewith, so that backwash water and foreign substances of the discharge line are primarily stored in the back-pressure prevention tank, thus preventing back pressure on the discharge line from increasing. |
