A device for preventing small water leakage of water inlet valve

Abstract

The invention discloses a small water leakage preventing device of a water inlet valve. The device is mounted on a water inlet valve body and comprises a swinging arm, an adjusting rod, a buoy, a small water tank, a siphon pipe and a counterweight buoyancy switch, wherein the swinging arm is pivoted on the water inlet valve body; a back pressure pad is mounted at one end of the swinging arm and directly faces a back pressure hole in the water inlet valve body; the other end of the swinging arm is connected with the adjusting rod; the buoy is mounted on the adjusting rod and is arranged in the small water tank; the small water tank is mounted on the water inlet valve body; the siphon pipe is mounted on the small water tank; an air hole is formed in the siphon pipe; the counterweight buoyancy switch is mounted on the small water tank and comprises a counterweight water cavity and a buoyancy water cavity; the counterweight water cavity and the buoyancy water cavity are independent of each other; a water leakage hole is formed in the lower end of the counterweight water cavity; a sealing pressing sheet is arranged at the upper end of the counterweight water cavity and is opposite to the air hole; the counterweight buoyancy switch controls the air hole to be opened and closed. According to the device, when the water tank suffers from small water leakage, water timely stops flowing into the water inlet valve, so that water resources are saved.

Description

technical field [0001] The invention relates to the technical field of water inlet valves, in particular to a small water leakage prevention device for water inlet valves. Background technique [0002] In the prior art, the water inlet valve usually includes a water inlet pipe, a top cover, a back pressure pad, a swing arm, a buoy and a small water tank. The lower end of the water inlet pipe is installed on the water supply pipe of the water tank, and the top cover is installed on the upper end of the water inlet pipe. The back pressure hole is set on the cover, the middle section of the swing arm is pivotally set on the top cover, one end of the swing arm is facing the back pressure hole, and a back pressure pad is installed, the other end of the swing arm is connected with the adjustment rod of the buoy, and the buoy is installed on a small In the water tank, while the small water tank is installed on the water inlet pipe, and there are seals to ensure watertightness betwe...

AI Technical Summary

Problems solved by technology

However, the water tank is prone to malfunction after being used for a period of time. For example, the drain valve is not closed tightly and slowly leaks water (small water leak).

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