Vortex flow type water surface control device for draining device
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United States of America Patent
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Dec 26, 2017
Issued Date -
N/A
app pub date -
Dec 9, 2011
filing date -
Dec 14, 2010
priority date (Note) -
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Abstract
A control plate is provided at a preferred position in a storm overflow chamber. An inflow pipe, an intercepting pipe, and an outflow pipe are connected to the storm overflow chamber. A vortex flow type water surface control device for a draining device includes the overflow chamber, and a control plate arranged in front of an opening portion of the intercepting pipe opening to the storm overflow chamber. A relation (1) 0.5 D≦X≦0.7 D and 0.83 D≦Y≦1.5 D holds true, or a relation (2) 0.4 D≦X≦0.5 D and 1.0 D≦Y≦1.5 D holds true, where D represents an inner diameter of the opening portion, X represents a projection length of the control plate with respect to the opening portion, and Y represents a distance between the control plate and the opening portion. As a result, contaminants enter the intercepting pipe.
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