Filter and water purification apparatus

Abstract

The present invention relates to the technical field of liquid separation, and discloses a filter and a water purification apparatus. The filter comprises a shell (10) and a membrane separation unit (20) arranged on the inner wall of the shell (10) and used for filtration, wherein a liquid inlet (100), a passing liquid outlet (101) for allowing a liquid penetrating through the membrane separationunit to pass, and a concentrated liquid outlet (102) for allowing a liquid impermeable to the membrane separation unit (20) are arranged on the shell (10), the filter further comprises a scrubbing unit (30) for scrubbing the surface of the membrane separation unit, and the scrubbing unit comprises a scrubbing head (301) and is arranged for making the scrubbing head selectively contact the membraneseparation unit. According to the present invention, the filter can remove contaminants on the surface of the separation membrane, and has uniform scrubbing friction; and the filter can be inserted into the softening water agent tank to form the water purification apparatus for preparing non-drinking soft water for washing rooms and soft water meeting drinking water standard, and the advantages of low cost, high water recovery rate and the like can be achieved.

Description

technical field [0001] The invention relates to the technical field of liquid separation, in particular to a filter and a water purification device. Background technique [0002] Membrane separation technology refers to the technology that achieves selective separation of a mixture of molecules with different particle sizes at the molecular level when they pass through a semi-permeable membrane. Semipermeable membrane is also called separation membrane or filter membrane, and the membrane wall is covered with small holes. According to the pore size classification, the separation membrane can be divided into microfiltration membrane, ultrafiltration membrane, nanofiltration membrane and reverse osmosis membrane. According to material classification, separation membranes can be divided into organic membranes and inorganic membranes. Common membrane separation filtration methods include full-flow filtration, cross-flow filtration, dead-end filtration, and tangential-flow filt...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, an automatic membrane cleaning device is used to scrub the membrane in a linear reciprocating manner. Although the pollutants on the surface of the separation membrane can be removed, the scrubbing part is always in contact with the surface of the separation membrane.

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