Composite filter element and water purifier containing the filter element

Abstract

The invention provides a composite filter element and a water purifier containing the same. A division plate, a first filtering cavity and a second filtering cavity are arranged in a shell of the composite filter element; the first filtering cavity and the second filtering cavity are formed through division by the division plate; filtering materials are arranged in the first filtering cavity and the second filtering cavity; a water stopping assembly is arranged at the opening position of the shell; the water stopping assembly comprises a water dividing piece and a water block piece; a water dividing flow channel is formed in the water dividing piece; a water block flow channel is formed in the water blocking piece; the water dividing piece is provided with a water dividing piece docking port; the water blocking piece is provided with a water blocking piece docking port; the water blocking piece and the water dividing piece realize docking and staggering of the water dividing piece docking port and the water blocking piece docking port through relative rotation; the water dividing flow channel comprises a first water dividing flow channel communicated with the first filtering cavityas well as a second water dividing flow channel communicated with the second filtering cavity; and the water dividing piece is provided with a drainage pipe which stretches into the division plate. Compared with the prior art, the composite filter element has the advantages of high sealing property, no water channeling and water seepage risks, good rotary operation hand feeling, low assembling difficulty, long service life and the like.

Description

technical field [0001] The invention relates to the technical field of filter elements, in particular to a composite filter element and a water purifier containing the filter element. Background technique [0002] Existing water purifiers generally adopt multi-stage filtration, and the set filter element device includes a front PP cotton filter element, a front activated carbon filter element, an RO filter element (reverse osmosis filter element) and a post activated carbon filter element. In order to reduce the total number of filter element devices and reduce the volume of the water purifier, the water purifier generally integrates multiple filter element devices into a composite filter element, that is, the composite filter element contains multi-stage filtration, and the filter element materials of each level are in different filtration stages. The cavity is connected with the corresponding water inlet and outlet through the flow channel. [0003] However, most of the c...

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Problems solved by technology

[0004] 1. There are problems of insufficient sealing between the filter chambers, between the flow channels, and between the filter chamber and the flow channels, which are prone to water channeling and water leakage, which will affect the filtration quality;

[0005] 2. The drainage tube installed in the filter cavity is not securely installed and easily deformed;

[0006] 3. The shell of the composite filter element is combined in the form of segmented bonding, which not only has a cumbersome manufacturing process, but also greatly increases the risk of water leakage of the composite filter element due to the existence of seams;

[0007] 4. The water inlet and outlet adopt a rotating water sealing structure to achieve the function of automatically cutting off the water when the composite filter element is disassembled. However, this type of water sealing structure uses the end face of the composite filter element as the working surface for water connection and water closure, so it is prone to low assembly accuracy and tightness. Insufficient, poor rotation feel, short service life and other problems

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