PURPOSE: An automatic draining apparatus of condensed water for an odor prevention facility in a sewage treatment plant is provided to prevent the inflow of external air and a freezing phenomenon in winter, to improve facility performance and product quality by conducting the valve closing operation more stably and firmly. CONSTITUTION: An automatic draining apparatus of condensed water for an odor prevention facility in a sewage treatment plant comprises a base element(20), a cylindrical valve sheet(30), a cylindrical housing(40), a cone-shape valve(50), and a protection component(70). The base element is continuously installed on the end of a drainpipe(12) in a flange coupling type. In the center of the base element, a vertical penetration hole(20a) is equipped. The valve sheet is installed to pass through the penetration hole from the upper part of the base element. A gradient part(32) is on an inner lower side wall of the valve sheet. The housing is continuously installed in the lower part of the base element, and partially contains the lower end of the valve sheet. Sidewalls of the housing are opened. The valve is interlocked between the valve sheet and the housing using a guide rod and a recovery element in a freely ascendable manner.
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