Multifunctional piloted type water feed valve

Abstract

The invention provides a multifunctional piloted type water feed valve through which multiple functions are integrated, work is reliable in the environment with the poor water quality, faults do not happen, and meanwhile, when a water feed system is in a negative pressure state, it can be ensured that discharged water cannot flow back to a water supply pipeline due to the anti-siphon function. Onthe structure basis of the piloted type water feed valve, a filter net is arranged on the water inlet pipe wall, it is ensured that water flowing into a flow limiting small hole is relatively clean, the flow limiting small hole cannot be blocked, it is guaranteed that valve work is reliable, the phenomenon of water leakage does not happen, and water flow can flush and bring away impurities stayingon the filter net in the water feed work state; and meanwhile, a one-way valve is arranged in a piloted through pipe leading to the flow limiting small hole, water flow can flow through the one-way valve only through the filter net, then flows into the flow limiting small hole and then flows into a piloted cavity, water in the piloted cavity can never flow back to a water inlet pipeline, accordingly, the piloted cavity is kept to be constantly in the positive pressure, and a valve assembly is closely attached to a water outlet and cannot be opened.

Description

technical field [0001] The invention belongs to the pilot-operated water supply valve in the technical field of valves, and is a water supply actuator in production and daily necessities equipment. Background technique [0002] Pilot valves are widely used in the environment of intelligent manufacturing, and are indispensable control actuators for production and domestic equipment. Its reliability is related to the quality of the whole equipment. Due to the technical characteristics of the pilot valve itself, there is a high requirement for the purity of the fluid, so the shortcomings of the valve used in the water environment are highlighted. For this reason, in order to improve the purity of water, people have added water filtration equipment, and the filter must be cleaned frequently, which adds trouble to equipment maintenance; in order to ensure the safety of tap water and drinking water, all countries in the world have introduced water feeders for tap water systems T...

AI Technical Summary

Problems solved by technology

Due to the technical characteristics of the pilot valve itself, there is a high requirement for the purity of the fluid, so the shortcomings of the valve used in the water environment are highlighted

For this reason, in order to improve the purity of water, people have added water filtration equipment, and the filter must be cleaned frequently, which adds trouble to equipment maintenance; in order to ensure the safety of tap water and drinking water, all countries in the world have introduced water feeders for tap water systems The anti-siphon mandatory standard, because the existing pilot valve itself does not have the anti-siphon function, so it can only add an anti-siphon mechanism in the tap water pipeline of the equipment to meet the standard requirements; but its volume is large, the reliability is poor, and the installation is not easy. convenient

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