초록 ▼

A vacuum sewer system comprises a liquid-driven ejector, the working medium of which is fed to the ejector by a circulation pump from a sewage collecting container, the suction side of the ejector being connected via a check valve to a vacuum sewer network. Air and sewage delivered through the sewer

A vacuum sewer system comprises a liquid-driven ejector, the working medium of which is fed to the ejector by a circulation pump from a sewage collecting container, the suction side of the ejector being connected via a check valve to a vacuum sewer network. Air and sewage delivered through the sewer network flow through the ejector into the collecting container. The bore of the discharge pipe of the ejector is substantially cylindrical throughout. Its length is 8 to 20, preferably 10 to 15, times the diameter of its bore and the pipe discharges directly into the open interior of the collecting container.

대표청구항 ▼

A method of operating a vacuum sewer system that comprises a vacuum sewer network, a sewage collecting container defining an open interior space, and an ejector having a suction inlet, a working medium inlet, and an outlet, said method comprising pumping liquid from the sewage collecting container t

A method of operating a vacuum sewer system that comprises a vacuum sewer network, a sewage collecting container defining an open interior space, and an ejector having a suction inlet, a working medium inlet, and an outlet, said method comprising pumping liquid from the sewage collecting container to the working medium inlet of the ejector as working medium, so that air and sewage in the sewer network are drawn into the ejector, and discharging fluid from the ejector into the sewage collecting container through said outlet and an elongate discharge pipe that debouches into the open interior space of the sewage collecting container, the discharge pipe defining a bore that is substantially cylindrical over the length of the discharge pipe, and the length of the discharge pipe being from about 8 to about 20 times the diameter of its bore. A vacuum sewer system comprising: a vacuum sewer network, a sewage collecting container defining an open interior space, an ejector having a suction inlet, a working medium inlet, and an elongate discharge pipe that debouches into the open interior space of the sewage collecting container, a check valve connected between the vacuum sewer network and the suction inlet of the ejector, and a circulating pump connected between the sewage collecting container and the working medium inlet of the ejector for supplying liquid from the sewage collecting container to the ejector as working medium, so that air and sewage in the sewer network are drawn into the ejector through the check valve and are discharged into the sewage collecting container through the discharge pipe, and wherein the discharge pipe defines a bore that is substantially cylindrical over the length of the discharge pipe and the length of the discharge pipe is from about 8 to about 20 times the diameter of the bore.