Fire hydrant contraction concealing and self-stretching high-pressure water jet method

Abstract

The invention discloses a fire hydrant contraction concealing and self-stretching high-pressure water jet method. The method includes steps: in a stretching stage, a first valve is turned on to allowwater to flow into a transition cavity, and water flow contacts with a positioning conduction mechanism and pushes a second firefighting vertical pipe to move along the center axis of a first firefighting vertical pipe from a water inlet end of the first firefighting vertical pipe to a water outlet end of the first firefighting vertical pipe; in a transition stage, a second valve is turned off, the second firefighting vertical pipe stops discharging water but is still in the stretching stage; in a contraction stage, the first valve completes transition and is in a closed state, water flows into a storage cavity, water flow contacts with the positioning conduction mechanism and pushes the second firefighting vertical pipe to move along the center axis of the first firefighting vertical pipefrom the water outlet end of the first firefighting vertical pipe to the water inlet end of the first firefighting vertical pipe, the positioning conduction mechanism is separated from a limiting mechanism, a trigger rod is separated from an inner limiting step, a second valve core moves upwards under the elastic force of a first spring, and a first drainage hole is sealed by the second valve core.

Description

technical field [0001] The invention relates to a fire rescue method, in particular to a high-pressure water spraying method of a fire hydrant. Background technique [0002] While fire brings convenience to human beings, it also brings great disasters to human beings. Fire hydrant is a necessary fire-fighting facility in a city, which marks the development speed of a city. Fire-fighting facilities in cities are generally located above the ground, and often Crashed or even crashed by passing vehicles, the damaged fire hydrant will discharge a large amount of water, which not only affects urban traffic and urban beautification, but also wastes water resources. Fire rescue has brought huge threat to people's life and property safety. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the object of the present invention is to provide a retractable fire hydrant installed below the ground. [0004] In order to realize the above-mentioned te...

AI Technical Summary

Problems solved by technology

[0002] While fire brings convenience to human beings, it also brings great disasters to human beings. Fire hydrant is a necessary fire-fighting facility in a city, which marks the development speed of a city. Fire-fighting facilities in cities are generally located above the ground, and often Crashed or even crashed by passing vehicles, the damaged fire hydrant will discharge a large amount of water, which not only affects urban traffic and urban beautification, but also wastes water resources. fire rescue, which poses a huge threat to the safety of people's lives and property

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