Buried automatic quick exhaust valve

Abstract

The invention provides a buried automatic quick exhaust valve, which consists of an upper valve body, a middle valve body, a lower valve body, an intake / exhaust hood, a quick opening / closing device, a sealing cover and a hollow float ball. The valve is characterized in that the valve in use is buried underground; airways are arranged in the middle valve body and the lower valve body; the upper valve body, the intake / exhaust hood, the quick opening / closing device, a valve stem and the sealing cover are integrally connected; the quick opening / closing device adopts a rotary opening / closing mode and thread-free design and closes when the device is pressed up; and air vents of the intake / exhaust hood are positioned at the lower end of the exhaust hood. The valve has the advantages that the valve has simple reasonable structure, management and maintenance convenience, anti-freezing property, theft-proof property and anti-destroying property; the opening / closing device is not easy to rust orfail, quick and reliable in closing; and the intake / exhaust hood ventilated at the lower end can effectively prevent rain, sand, pollution, insect damage and the like.

Description

technical field [0001] The invention relates to an exhaust valve, in particular to an underground automatic quick exhaust valve, which is suitable for intake and exhaust of water supply and drainage pipelines. Background technique [0002] At present, the exhaust valves used for water supply and drainage pipelines are all installed on the ground and exposed to the outside, which are very easy to be stolen and damaged by man-made. In addition, most of the exhaust holes of existing exhaust valves are designed on the upward or side positions, and sand and sundries are easy to fall into the valve body of the exhaust valve, which adds difficulties to the management and maintenance of the exhaust valve; the emergency shut-off gate is The screw-type exhaust valve is easy to rust and lose its due function if it is not used for many years. The above are the defects that exist in the existing exhaust valve. Contents of the invention [0003] The purpose of the present invention is...

AI Technical Summary

Problems solved by technology

[0002] At present, the exhaust valves used for water supply and drainage pipelines are all installed on the ground and exposed to the outside, which is very easy to be stolen and damaged by man-made. In winter, it is easy to crack, freeze or freeze to death, resulting in work failure.

In addition, most of the exhaust holes of existing exhaust valves are designed on the upward or side positions, and sand and sundries are easy to fall into the valve body of the exhaust valve, which adds difficulties to the management and maintenance of the exhaust valve; the emergency shut-off gate is The screw-type exhaust valve is easy to rust and lose its due function if it is not used for many years

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