摘要:
An opening/closing device 1 includes a gate 10 that receives a flow of a sewage W, and can fall toward a downstream side of the flow, a fall prevention unit 20b that prevents the gate 10 from falling by supporting the gate 10, a support release unit 22b that releases the support for the gate 10 by the fall prevention unit 20b, a first float 18 that is arranged on the upstream side of the gate 10, and is smaller in specific gravity than the sewage W, a surfacing prevention unit 44 that prevents the first float 18 from surfacing, a second float 16 that is arranged on the upstream side of the gate 10, is arranged above the first float 18, and is smaller in specific gravity than the fluid, and a surfacing-prevention release unit 42 that releases, resulting from surfacing of the second float 16, the prevention of the surfacing of the first float 18 by the surfacing prevention unit 44. Further, the support release unit 22b is activated resulting from surfacing of the first float 18.
摘要:
An opening/closing device 1 includes a gate 10 that receives a flow of a sewage W, and can fall toward a downstream side of the flow, a fall prevention unit 20b that prevents the gate 10 from falling by supporting the gate 10, a support release unit 22b that releases the support for the gate 10 by the fall prevention unit 20b, a first float 18 that is arranged on the upstream side of the gate 10, and is smaller in specific gravity than the sewage W, a surfacing prevention unit 44 that prevents the first float 18 from surfacing, a second float 16 that is arranged on the upstream side of the gate 10, is arranged above the first float 18, and is smaller in specific gravity than the fluid, and a surfacing-prevention release unit 42 that releases, resulting from surfacing of the second float 16, the prevention of the surfacing of the first float 18 by the surfacing prevention unit 44. Further, the support release unit 22b is activated resulting from surfacing of the first float 18.
摘要:
An opening/closing device 1 according to the present invention includes a gate 10 that receives a flow of a sewage W in an upright state, and can fall toward a downstream side of the flow and a first spring 52a that generates a force for bringing the gate 10 into an upright state, wherein the first spring 52 generates a force insufficient for bringing the gate 10 into the upright state if the gate 10 is in a fallen state, and generates a force sufficient for bringing the gate into the upright state if the gate 10 is tilted by an angle equal to or less than a predetermined angle.
摘要:
A control plate is provided at a preferred position in a storm overflow chamber. An inflow pipe 2, an intercepting pipe 3, and an outflow pipe 4 are connected to the storm overflow chamber 10. A vortex flow type water surface control device for a draining device includes the overflow chamber 10, and a control plate 6 arranged in front of an opening portion 3a of the intercepting pipe 3 opening to the storm overflow chamber 10. A relation (1) 0.5D‰¤X‰¤0.7D and 0.83D‰¤Y‰¤1.5D holds true, or a relation (2) 0.4D‰¤X
摘要:
A control plate is provided at a preferred position in a storm overflow chamber. An inflow pipe 2, an intercepting pipe 3, and an outflow pipe 4 are connected to the storm overflow chamber 10. A vortex flow type water surface control device for a draining device includes the overflow chamber 10, and a control plate 6 arranged in front of an opening portion 3a of the intercepting pipe 3 opening to the storm overflow chamber 10. A relation (1) 0.5D≤X≤0.7D and 0.83D≤Y≤1.5D holds true, or a relation (2) 0.4D≤X