Sewage discharge system

Abstract

The invention relates to a sewage discharge system, which comprises a water tank, a filter and a connecting pipeline, and a water storage cavity is formed in the water tank; the filter comprises a filter shell and a filter element, a containing cavity is formed in the filter shell, a water inlet, a water outlet and a sewage draining exit are formed in the filter shell, and the water inlet and thesewage draining exit are both communicated with the containing cavity; the filter element is arranged in the accommodating cavity, a filter cavity is formed in the filter element, and the filter cavity is communicated with the water outlet; one end of the connecting pipeline is communicated with the drain outlet, and the other end of the connecting pipeline is communicated with the water storage cavity. When a user uses the water tank, the amount of water in the water storage cavity is reduced, the water pressure is reduced, and a water pressure difference is generated between the water storage cavity and the accommodating cavity, so that the connecting pipeline is promoted to extract water in the accommodating cavity from the drain outlet and convey the water into the water storage cavity, and impurities in the accommodating cavity are also extracted into the water storage cavity in the extraction process, so that a filter element of the filter is cleaned.

Description

technical field [0001] The invention relates to the technical field of water conservancy equipment, in particular to a sewage discharge system. Background technique [0002] The pre-filter is the first coarse filtration equipment for the whole house water, which can filter the sediment, rust, algae and other large particle impurities in the tap water to ensure the safety of water for users. At the same time, it also protects the whole house water pipes, faucets, valves, terminal water appliances and other facilities. However, after the filter works for a period of time, the filtered granular impurities will accumulate on the filter element of the pre-filter, which will affect the filtering effect. Therefore, the pre-filter needs to be cleaned regularly as required. At present, the pre-filter is usually manually drained. The user manually drains the pre-filter after using it for a period of time, which is time-consuming and laborious, and the user tends to forget the cleani...

AI Technical Summary

Problems solved by technology

At present, the pre-filter is usually manually drained. The user manually drains the pre-filter after using it for a period of time, which is time-consuming and laborious, and the user tends to forget the cleaning time, resulting in a large amount of impurities accumulated in the pre-filter, which increases the difficulty of cleaning.

At the same time, when cleaning the filter element of the pre-filter, the waste water cleaned of impurities is usually directly discharged into the floor drain, wasting water resources

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