| 摘要 |
A strainer for use in a submergible pump is constructed by a plurality of stoppers arranged on a plate member and each of the stoppers is disposed and extended in the direction of liquid flow passing from the peripheral portion of the plate member towards the central portion of the same or the suctioning opening of the pump. Each of the members is provided with a slanted edge near the center portion, an upright edge near the outer periphery and a tip edge parallel to the plate member and coupling the slanted edge. The upright edge and the height of the tip edge is made shorter in its axial length so that the liquid flow may freely pass between the adjacent stoppers as well as the portion between the tip edge and the pump body. The stoppers or entire strainer may be made of elastic material to give flexibility to the stoppers so as to make the flow passage larger by the deflection thereof to allow smooth backward flow and give facility for cleaning when the pump is de-energized.
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