Method for preventing tap water from being polluted by a tankless toilet

Abstract

The invention discloses a method for preventing a water-tank-free toilet from contaminating tap water. The inlets of flushing valves are connected with a water supply pipe; the outlets of the flushing valves are higher than the water surface of a toilet siphon pool; valves communicated with the air are arranged on the water supply pipes or water outlet pipes of the flushing valves; when no pressure exists at the inlets or outlets of the flushing valves, the valves are opened, and the water supply pipes or water outlet pipes of the flushing valves are communicated with the air; when pressure exists at the inlet or the outlets of the flushing valves, the valves are closed to form closed water channels. According to the method, when negative pressure exists at the outlets or inlets of the flushing valves, the outlets or inlets of the flushing valves are automatically communicated with the air to form an air isolation zone, so that when the water supply pipe is short of water, the flushing valves are opened and negative pressure in the water supply pipe cannot be transmitted into the water outlet pipes of the flushing valves; the negative pressure in the water supply pipe cannot cause a siphon action on the toilet, so that siphon sewage in the siphon pool and odor in a urinal cannot be sucked into the water supply pipe so as not to contaminate water in a tap water pipe system.

Description

[technical field] [0001] The invention relates to sanitary ware, in particular to a method for preventing tap water from being polluted by a tankless toilet. [Background technique] [0002] The old-fashioned flush toilet is equipped with a water tank; the water tank of the flush toilet is connected to the water inlet pipe to store clean water before flushing the toilet; when flushing, the water in the water tank enters the pool, and the sewage and debris are discharged through the sewage pipe. But the water storage capacity of water tank is fixed, and the displacement is also fixed during each flushing, and after each flushing, it takes a period of time for the water tank to refill the water for the next flushing; Flushing water can’t flush it clean, and multiple flushes will take a long time to wait; sometimes there is less dirt, and a full tank of water is still needed when flushing, wasting water resources; in addition, the water tank needs to occupy additional space arou...

AI Technical Summary

Problems solved by technology

But the water storage capacity of water tank is fixed, and the displacement is also fixed during each flushing, and after each flushing, it takes a period of time for the water tank to refill the water for the next flushing; Flushing water can’t flush it clean, and multiple flushes will take a long time to wait; sometimes there is less dirt, and a full tank of water is still needed when flushing, wasting water resources; in addition, the water tank needs to occupy additional space around the toilet, and it takes a long time The water tank also emits an odor that pollutes the air in the restroom

[0003] Tankless toilets are superior to older tank-based toilets in terms of space and water savings, but there are still some drawbacks

The flush pipe on the upper part of the tankless toilet and the jet pipe in the siphon pool at the bottom of the urinal are connected to the tap water pipe through the flush valve. Bacteria flow back into the water pipe due to the siphon effect, causing serious pollution to the water quality in the water pipe system; in addition, if the installation position of the flush valve is lower than the upper surface of the toilet, when the toilet is blocked and flushed, the overall water level in the urinal will rise , when the highest water level is higher than the flush valve, the sewage in the toilet will directly contact the flush valve and cause water pollution

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