Drainage method for assembling and disassembling filter element of backwashing water purifier

Abstract

The invention relates to the water treatment industry, in particular to advanced purification of drinking water. The invention discloses a drainage method for assembling and disassembling a filter element of a backwashing water purifier. The backwashing water purifier is equipped with a water inlet pipeline, a water outlet pipeline, a drainage pipeline and a waterway switcher, wherein, the water inlet pipeline is equipped with a water inlet valve; a drainage port of the waterway switcher is connected with the drainage pipeline, a water inlet of the waterway switcher is connected with the water inlet pipeline, a water outlet of the waterway switcher is connected with the water outlet pipeline, and the water outlet and the drainage port are alternatively opened; a controlled water inlet and a controlled water outlet of the waterway switcher are respectively butted with the water inlet and the water outlet and connected with the water inlet pipeline and the water outlet pipeline of the filter element to form a filtering channel; when the waterway switcher is located in a backwashing switching position, the controlled water inlet and the controlled water outlet of the waterway switcher are respectively butted with the drainage port and the water inlet to form a backwashing channel of the filter element; when the water inlet valve is opened, water entering the backwashing water purifier is discharged from the drainage pipeline; and when the water inlet valve is closed, water in the backwashing water purifier is discharged from the drainage pipeline in a gravity drop manner. The drainage method of the invention has the advantages of clean, sanitary and pollution-free filter element replacing process, and high-grade products.

Description

technical field [0001] The invention relates to the water treatment industry, and specifically relates to the deep filtration and purification of drinking water. Background technique [0002] At present, water purifiers are relatively popular in China. When drinking water is used, the water purifier is used to deeply filter the impurities in the water and water pipelines, which better protects the health of users. As a consumable of the water purifier, the filter element needs to be replaced after being used for a period of time. However, with the popularization of water purifiers, their defects and deficiencies in application are gradually exposed: most of the middle and low-priced water purifiers use an open liner configuration bare metal model. The machine structure in which the filter housing with built-in liner is hoisted under the machine base, although the filter housing can be reused, correspondingly reduces the cost of replacing the filter element by 10-20% for co...

AI Technical Summary

Problems solved by technology

The related problems caused by replacing the filter element often recur, so that it is recognized as one of the three major problems that water purifiers are difficult to popularize

Above-mentioned defect and deficiency cause water purifier to be difficult to obtain wider popularization