Central tube for filter element and filter device provided with same

Abstract

The invention discloses a central tube for a filter element and a filter device provided with the same. The central tube comprises a first half tube, a second half tube and a membrane element, wherein the first half tube has a first matching surface which extends in the axial direction of the first half tube, and a groove is formed in the first matching surface to form a first flow path which extends in the axial direction; the second half tube has a second matching surface which extends in the axial direction of the second half tube, and a groove is formed in the second matching surface to form a second flow path which extends in the axial direction; the first half tube and the second half tube are in butt joint, and the first matching surface and the second matching surface are opposite; the first half tube and the second half tube are matched to form a hollow straight tube; the membrane element is arranged between the first half tube and the second half tube and seals the first flow path and the second flow path. According to the central tube for the filter element, the structure of the central tube can be simplified, mold making of the central tube is convenient, and then batch production of the central tube can be achieved.

Description

technical field [0001] The invention relates to the technical field of water purification equipment, in particular to a central pipe used for a filter element and a filter device with the same. Background technique [0002] Filtration technologies in household water purifiers can generally be divided into microfiltration, ultrafiltration, ion exchange, adsorption and reverse osmosis (RO) / nanofiltration (NF) technologies. The core component of RO / NF is the RO / NF membrane element . RO / NF membrane elements will produce concentrated water during use, and pure water only accounts for about 30% of the influent water, which will generate relatively large waste. [0003] The traditional water inlet method of the membrane element is to enter the raw water and concentrate water from the direction parallel to the pure water collection pipe (central pipe), and the flow channel is relatively short. In the related art, it is realized by changing the flow direction of the raw water in th...

AI Technical Summary

Problems solved by technology

For example, in related technologies, the direction of raw water inlet flow rate and concentrated water outlet direction are perpendicular to the center pipe, but its special center pipe structure cannot be molded on household water purifiers, and mass production cannot be realized

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