Overflow valve

Abstract

The invention discloses an overflow valve. The overflow valve comprises a shell and a swing lever assembly, a water guide cavity is formed in the shell, a water inlet pipe and a water outlet pipe arearranged at the top and the bottom of the shell respectively, the bottom of the water inlet pipe extends into the water guide cavity, and a supporting piece is fixedly arranged on the side of the water inlet pipe. The swing lever assembly comprises a lever guide column hinged to the lower portion of the supporting piece, a water seal structure fixedly arranged at one end of the lever guide columnand a load fixedly arranged at the other end of the lever guide column. The water seal structure comprises a partition plate and an annular water baffle, a water storage area is defined by the annularwater baffle and the partition plate, and the bottom of the water inlet pipe extends into the water storage area. Under the normal condition, the swing lever assembly is in a closed state under the balance effect of the load, water in the water storage area plays a role in isolating air, when a drain valve drains water, outside air cannot enter a water outlet from the water inlet pipe, and the drainage speed is greatly increased through the siphonic effect; and when the pressure borne by the water seal structure is larger than the acting force of the load, the lever guide column rotates and opens the water inlet pipe to achieve overflowing.

Description

technical field [0001] The invention relates to the field of bathroom, in particular to an overflow valve. Background technique [0002] Existing drain valve is made of valve body, base, overflow pipe. Wherein, the valve base communicates with the overflow pipe. Under the normal water-stop state, the outside air communicates with the drain port of the drain valve base through the overflow pipe. When an overflow occurs, water flows from the overflow pipe to the drain at the base of the drain valve and into the toilet pipe. When the drain valve is opened, the water flows out through the drain port of the drain valve base. During normal use, since the drain port of the drain valve base communicates with the outside air through the overflow pipe channel, when draining, a negative pressure will be generated in the drain channel, and the outside world will Under the action of atmospheric pressure, air will be mixed into the drain outlet of the drain valve base together, so that...

AI Technical Summary

Problems solved by technology

When the drain valve is opened, the water flows out through the drain port of the drain valve base. During normal use, since the drain port of the drain valve base communicates with the outside air through the overflow pipe channel, when draining, a negative pressure will be generated in the drain channel, and the outside world will Under the action of atmospheric pressure, the air will be mixed into the drain outlet of the drain valve base, so that the drain channel is not full of water, thereby reducing the draining speed

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