Stirring device

A stirring device for a water storage system, the water storage system housing water with sediments deposited therein, and having an inlet that is disposed inside the water storage system for fluid flow therethrough, said stirring device comprising:

• a tube unit comprising:
• a rigid tube member, and
• a flexible tube member adapted for interconnecting said rigid tube member and the inlet of the water storage system, such that the water flows into said flexible tube member via said rigid tube member, and flows eventually through the inlet;
• and
• a stirring unit comprising:
• a center rod extending rotatably into said rigid tube member along an longitudinal direction of said rigid tube member,
• a support subunit positioning said center rod within said rigid tube member,
• a driver fan subunit mounted to said center rod and adapted to be driven by the water for actuating rotation of said center rod, and
• a stirring member mounted co-rotatably to said center rod and adapted for stirring the sediments in the water;
• wherein said center rod of said stirring unit comprises:
• an inner rod portion that is disposed in said rigid tube member of said tube unit,
• an outer rod portion that is disposed outside of said rigid tube member, and
• a middle rod portion that interconnects said inner and outer rod portions;
• wherein said driver fan subunit is mounted to said middle rod portion and is disposed outside of said rigid tube member;
• wherein said stirring member is mounted to said outer rod portion;
• and
• wherein said stirring unit further comprises a propeller fan subunit that is mounted to said middle rod portion of said center rod, that is disposed between said driver fan subunit and said rigid tube member of said tube unit, and that is adapted to be driven rotatably by the water, such that rotation of said propeller fan subunit results in movement of said rigid tube member of said tube unit.