Overflow valve for improving overflow capability

Abstract

The invention discloses an overflow valve for improving the overflow capability. A shell is included and internally provided with a cavity. A water inlet pipe and a water outlet pipe are arranged at the top and the bottom of the shell correspondingly, and the bottom of the water inlet pipe stretches into the cavity. The part, on the side edge of the water inlet pipe, of the top wall of the cavityis fixedly provided with a supporting piece. A lever guide column is hinged to the lower portion of the supporting piece. A seal rubber pad which is in seal fit with the bottom of the water inlet pipeis fixedly arranged at one end of the lever guide column, and the other end is provided with a balance structure body used for forming lever balance with the seal rubber pad and driving the seal rubber pad to upwards reset. In the normal situation, the seal rubber pad seals and closes the water inlet pipe under the action of the balance structure body, and when a drain valve discharges water, outside air cannot enter a water outlet of the drain valve from the water inlet pipe, and the water discharging speed is greatly increased through the siphonic effect; and when the water pressure exertedon the seal rubber pad is higher than the acting force of the balance structure body, the lever guide column drives the seal rubber pad to rotate, the water inlet pipe is opened, the overflow valve achieves the overflow function, and the overflow effect is good.

Description

technical field [0001] The invention relates to the field of sanitary ware, in particular to an overflow valve with improved overflow capacity. 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 t...

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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