Water pre-injection type double-seal pedestal pan

Abstract

The invention provides a water pre-injection type double-seal pedestal pan. The pedestal pan comprises a water supply device, a pedestal pan main body and a mechanical sealing valve; the pedestal pan main body is provided with a trap, the trap is used for sealing the stored water, and the water sealing depth of the trap is 0 to 60 millimeters; the mechanical sealing valve is positioned below the trap and is not in direct contact with the sealed water in the trap, and the mechanical sealing valve is connected to a blow-off port of the pedestal pan main body; the water supply device is used for providing a flushing state and a water pre-injection state; in the water pre-injection state, the mechanical sealing valve is closed, and the pre-injected water is stored; in the flushing state, the mechanical sealing valve is opened, and sewage is drained; and in the water pre-injection state, the water sealing depth of the water pre-injection type double-seal pedestal pan is more than 55 millimeters. The double-seal pedestal pan is simple in manufacture and reliable in performance, and has optimal sealing performance, pollution discharge performance, water-saving performance and using performance.

Description

technical field

[0001] The invention relates to a hygienic cleaning appliance, in particular to a pre-filling type double-seal toilet. Background technique

[0002] The existing water flush toilet generally adopts the water trap toilet, and the water trap is used for water sealing. The national standard stipulates that the water sealing depth shall not be less than 50mm. Due to the high water sealing depth, the flushing resistance is large. A large amount of water must be used for flushing, and 6 liters of water is close to the bottom line of the amount of flushing water, resulting in a large amount of waste of water resources. For this reason, someone proposes to use a mechanical seal valve to replace the toilet of the trap. The flushing volume of the toilet with the mechanical seal valve is small, but the seal of the mechanical seal valve is often caused by scaling or hanging dirty. The seal is not tight, and water leakage occurs, resulting in too little or no water in th...

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