Pressure limiting valve applied to water supply pipeline

Abstract

The invention discloses a pressure limiting valve applied to a water supply pipeline. The pressure limiting valve comprises a valve body, a valve base, a piston and elastic reset members. The valve base is provided with a first outer side wall, a second outer side wall and a first communication cavity, and the inner wall of the first communication cavity is provided a first sealing part, through holes and a second sealing part; the piston is provided with a third outer side wall, a fourth outer side wall and a second communication cavity and can reciprocate in the direction from a water inletend to a water outlet end; the elastic reset members abut against the first outer side wall and the third outer side wall separately. When the piston is located at a first position, the fourth outer side wall is in sealed cooperation with the second sealing part, and a first flow channel, the second communication cavity, the first communication cavity, the through holes and a gap channel are all communicated; when the piston is located at a second position, the fourth outer side wall is separately in sealed cooperation with the second sealing part and the first sealing part and seals the through holes. The pressure limiting valve applied to the water supply pipeline can achieve the effects of voltage regulation and pressure limitation, and normal use of a water use end is ensured.

Description

technical field [0001] The invention relates to the technical field of protection devices for water supply pipelines, in particular to a pressure limiting valve applied to water supply pipelines. Background technique [0002] With the continuous acceleration of the urbanization process, the water supply pipeline system has become increasingly complex. In order to meet the water supply requirements of high-rise buildings, the water pressure of the water supply pipeline system has also become higher and higher. High water pressure will pose safety hazards, prone to pipeline rupture and leakage, affecting the normal use of the pipeline. Affected by factors such as poor exhaust, the water pressure in the pipeline will fluctuate violently to form a water hammer effect. The road vibrates strongly, the pipe joints are disconnected, and the valves and water facilities are damaged. [0003] Traditional water supply pipeline systems usually only install pressure stabilizing and pres...

AI Technical Summary

Problems solved by technology

[0002] With the continuous acceleration of the urbanization process, the water supply pipeline system has become increasingly complex. In order to meet the water supply requirements of high-rise buildings, the water pressure of the water supply pipeline system has also become higher and higher. High water pressure will pose safety hazards, prone to pipeline rupture and leakage, affecting the normal use of the pipeline. Affected by factors such as poor exhaust, the water pressure in the pipeline will fluctuate violently, forming a water hammer effect. The road vibrates strongly, the pipe joints are disconnected, and the valves and water facilities are damaged

[0003] Traditional water supply pipeline systems usually only install pressure stabilizing and pressure limiting devices on large main pipelines or the entire water supply pipeline system does not install any pressure stabilizing and pressure limiting devices. For the water terminal, when the water pressure in the pipeline is high, It cannot play the role of stabilizing and limiting the pressure, which is not conducive to the normal use of the water terminal

Images