SILT EXCLUDING SYSTEM CAPABLE OF REMOVING SEWERAGE AND SILT BY SENDING OUT SEWERAGE FLEW IN A SEWERAGE PUMP STATION ACCORDING TO THE LEVEL OF SEWERAGE OR RETURNING SEWERAGE AND SILT STAYING IN A SEWERAGE FEED PIPE TO A SEWERAGE PUMP STATION, THEN SENDING OUT TO A SEWERAGE MANHOLE THROUGH A SEWERAGE FEED PIPE, AND CONTROLLING METHOD THEREOF

摘要

PURPOSE: A slit excluding system is provided to exclude the separate removal for the slit in sewerage, to cut down the construction cost, to promote the convenience on maintenance and to protect river environment. CONSTITUTION: The slit excluding system contains: a sewerage pump station(21) provided with a sewerage pump to send out the sewerage flew in; a sewerage manhole(23) installed to one side of a river to supply the sewerage supplied from the sewerage pump station(21) to a sewerage disposal plant; a sewerage feed pipe(25) installed on the riverbed to connect the sewerage pump station(21) and the sewerage manhole(23); a silt excluding pipe(27) connecting the lower part of the sewerage feed pipe(25) and the lower part of the sewerage pump station(21); and a gate valve(29) installed to the silt excluding pipe(27) as a structure for returning the stationary sewerage and silt in the sewerage feed pipe(25) naturally to the sewerage pump station(21) through the silt excluding pipe(27).