Leakage-preventing structure

Abstract

The invention discloses a leakage-preventing structure and relates to the technical field of valves. The leakage-preventing structure comprises valve bodies. A water inlet and a water outlet are formed in the valve bodies respectively, valve seats and rubber mats are fixed to the inner walls of the valve bodies, valve plates are arranged in the valve bodies, do reciprocating motion in the water flow direction under the effect of the water pressure and the effect of resetting devices and are sealed in the radial direction when making contact with the valve seats, and sealing space is formed among the rubber mats, the valve seats and the valve plates when the valve plates make contact with the valve seats and the rubber mats at the same time. According to the invention, when water leaks, the pressure difference of the sealing space formed among the rubber mats, the valve seats and the valve plates is damaged, water flow larger than starting flow of a water meter is formed instantly so as to drive the water meter to measure the water flow, and therefore the phenomenon that the water meter cannot measure the water flow because the water flow is small is prevented, loss of water suppliers is avoided, backflow of fluid is prevented, and the flow direction of the fluid is limited.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to an anti-drip structure. Background technique [0002] At present, due to the limitation of the sensitivity of the water meter, when the flow rate is small enough, the water meter cannot measure the flow rate. Therefore, water is received in the way of "thin water and long flow" to avoid the water fee that should be paid and cause losses to the water supplier. Most of the existing valves can only simply control the opening and closing of the fluid channel, but cannot limit the flow direction of the fluid, and cannot prevent and avoid the backflow phenomenon that easily occurs during the municipal tap water supply process. [0003] In order to solve the above problems, reduce the loss of the water supply side, and cherish the national wealth, it is necessary to design an anti-drip structure to prevent the phenomenon that the water meter cannot be rotated when the flow rate is small,...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the limitation of the sensitivity of the water meter, when the flow rate is small to a certain extent, the water meter cannot measure the flow rate. Therefore, water is received in the way of "thin water and long flow" to avoid the water fee that should be paid and cause losses to the water supplier.

Most of the existing valves can only simply control the opening and closing of the fluid channel, but cannot limit the flow direction of the fluid, and cannot prevent and avoid the backflow phenomenon that is prone to occur during the municipal tap water supply process.

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