Novel anti-siphonage water outlet connecting device

Abstract

The invention provides a novel anti-siphonage water outlet connecting device. The device comprises an outer shell, an inner shell and an anti-siphonage V-shaped ring, wherein a first water passing channel is formed in the outer shell; the inner shell is arranged at the water outlet end of the first water passing channel, a second water passing channel is formed inside the inner shell, and the size of an opening in the inner side wall of the second water passing channel is gradually increased in the water flow direction; and the anti-siphonage V-shaped ring is arranged in the second water passing channel and comprises an elastic part, and the elastic part abuts against the inner side wall of the second water passing channel under the action of the elasticity of the elastic part and shrinks inwards in the water flow direction under the action of the water flow pressure. According to the novel anti-siphonage water outlet connecting device, the anti-siphonage V-shaped ring is arranged in the inner shell so that the anti-siphonage effect can be achieved; and meanwhile, the size of the opening in the inner side wall of the second water passing channel of the inner shell is gradually increased in the water flow direction, and therefore in the sealing state, the elastic part of the anti-siphonage V-shaped ring can better abut against the inner side wall of the inner shell, and the sealing effect is better.

Description

technical field [0001] The invention relates to the technical field of water outlet accessories, in particular to a novel anti-siphon water outlet connection device. Background technique [0002] see figure 1 It is a structural diagram of the anti-siphon state of the traditional anti-siphon water-saving valve. Its general structure is: a spring and a sealing structure are arranged in the inner casing. Under the action of the spring, the sealing structure is used to ensure the sealing of the inner casing. When there is water flow through, Use the water pressure to impact the sealing structure, and the spring is compressed to make the water flow. For details, please refer to figure 2 It is a structural diagram of the water inlet state of the traditional anti-siphon water-saving valve. However, the traditional anti-siphon water-saving valve has the following disadvantages: [0003] First, the spring plus sealing structure is relatively complex and inconvenient to install; ...

AI Technical Summary

Problems solved by technology

[0003] First, the overall structure of the spring plus the seal is relatively complicated and inconvenient to install;

[0004]Second, when the spring is soaked in water for a long time, it will fatigue or fail. In addition, it will be corroded by scale in the water, causing the spring to break, affecting the entire Use of anti-siphon valves;

[0005]Third, because the flow of water needs to overcome the spring force, the spring needs a certain amount of elasticity. When the pressure of the water flow is too small, there is a situation where the sealing structure cannot be opened

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