A pressure relief device for a spherical sewer manhole cover with nodular ink for waterlogging prevention

Abstract

The invention discloses a pressure relief device used for preventing falling during waterlogging and applied to a spherulitic graphite round sewer well lid. The structure of the pressure relief devicecomprises a pressure relief main lid body, a ferrule, stiffening angle iron and a fixing base. The pressure relief main lid body is installed above the ferrule and connected with the ferrule in a locked manner. The ferrule is welded to the fixing base through the stiffening angle iron. The pressure relief main lid body comprises a supporting round base with holes, a top cover, a locking groove, apressure relief connecting layer, a water pressure detecting device, a chassis and an overhauling and assembling opening. The right end of the top cover is provided with the locking groove and is welded with the locking groove. When the equipment is used, by means of the arranged pressure relief mechanism, the pressure relief device can avoid the problems that in the low-lying area, due to comingof rain seasons, large precipitation amount causes a sewer pipeline not to drain water in time, accumulated water under the well lid is too full and impacts the well lid upwards all the time, a partof the well lid is damaged or falls off, and many unsafe factors are brought to pedestrians and vehicles, and the equipment effectively reduces flushing pressure on the well lid from the waterloggingwater, and enables the well lid to be used safely.

Description

technical field [0001] The invention relates to a pressure relief device for a circular sewer manhole cover cast by waterlogging and detachment-proof ductile ink, which belongs to the field of manhole cover equipment. Background technique [0002] Cast iron manhole cover is a kind of metal manhole cover used for sewer wells. It is generally used in road administration in urban areas. It is generally round, because the round manhole cover is not easy to tilt, and can be used for daily sewer maintenance and can better protect pedestrians and people. vehicle safety. In the southern region, there is a lot of rain in summer, especially in low-lying areas on typhoon days, which are often prone to waterlogging problems. [0003] The existing technology has the following disadvantages: due to the coming of the rainy season in low-lying areas, the high precipitation makes the drainage of the sewer pipeline insufficient, which will cause the water under the manhole cover to be too fu...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a pressure relief device for a circular sewer manhole cover made of waterlogging and detachment-proof nodular ink, so as to solve the existing problems

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