Buried butterfly valve

Abstract

The invention discloses a buried butterfly valve. The valve comprises a valve body, a butterfly plate, a valve rod, sealing rings, a lower bottom cover, a valve shaft sleeve, an upper valve rod assembly, an outer sleeve assembly, a valve end and an end cover, and is characterized in that the butterfly plate is arranged in the valve body, the butterfly plate is arranged in the center of the valve body, the end cover is arranged at the upper end of a protective pipe, the end cover is fixedly connected with the protective pipe, the upper valve rod assembly is installed at the upper end of the valve rod, the upper valve rod assembly is connected with the valve rod through a square hole in a matched manner, the lower portion of the valve rod is sleeved with an O-shaped ring, and the sealing rings are fixedly connected with the two end faces of the butterfly plate through hexagon socket countersunk head screws respectively. The valve can be directly buried underground to be directly connected with a pipeline, operation is convenient, a valve well does not need to be built, potential safety hazards do not exist, the requirement for the environment is low, much space can be saved in urbanconstruction and underground transmission and distribution pipelines, particularly, the whole valve can be directly buried underground, only a valve rod head needs to be exposed or hidden to facilitate opening and closing operation, and the environment and facilities are not affected.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a buried butterfly valve. Background technique [0002] At present, with the transportation of various media in the pipeline, the valve is used as an accessory of the pipeline. For the valve, it is simply a cut-off and opening device for the transmission medium, which can control the flow direction, adjust And control the parameters of the conveying medium, so the sealing performance of the valve is relatively high, and the better the sealing performance, the better the safety of the conveying pipeline. [0003] In the current urban construction, pipeline laying is essential. In order to optimize the environment and save space, most pipelines are laid underground. For transmission and distribution pipelines, valves are necessary. At present, butterfly valves in valves are also called flap valves. A regulating valve with simple structure, which can be used for switch control of lo...

AI Technical Summary

Problems solved by technology

The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. It has the advantages of simple structure, small size, light weight, rapid switching, small installation size, and drive It has the characteristics of small torque and good fluid control characteristics, but at present, ordinary valves have high requirements on the environment, and many valve wells need to be built, which affects the environment construction, and takes up a lot of space and is difficult to operate.

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