Filter cartridge for purifying water

Abstract

The invention provides a filter cartridge for purifying water with large and compact accommodation space of a filter and high filter capacity. The filter cartridge for purifying water is disposed in the shell including a raw water inlet and a purified water outlet, and includes a hollow filament membrane bundle and a powder filter. The powder filter is saved in the inner space of a cylinder vessel formed by an inner wall, an outer wall, an upper wall, and a lower wall. The cylinder vessel includes a tabling part A, one end of the hollow filament membrane bundle is fixed on a sealing cover with a sealing agent, and a part of the part except the end of the hollow filament membrane bundle forms a projection part protruding from the sealing cover. The projection part is accommodated inside of the inner wall, and the sealing cover includes a tabling part B. The tabling part A and the tabling part B tables in a watertight manner, so that the water can go through from the surface of the outer wall on the side of the shell to the surface of the inner wall on the side of the hollow filament membrane bundle on the radial direction of the filter cartridge for purifying water.

Description

technical field [0001] The present invention relates to a water purification cartridge installed in a water purifier. Background technique [0002] In recent years, in households, water purifiers for purifying tap water have been widely used. In these water purifiers, a water purification cartridge containing various filters for purifying tap water is used. As a filter element, generally, powder (granular or powder) activated carbon that removes free residual chlorine, bleach smell, musty smell, trihalomethane, etc. from tap water, and activated carbon that removes turbid components, bacteria, etc. Hollow fiber membrane. The total amount of filtered water that these filters can handle is limited, so users continue to use the water purifier while regularly replacing the water purification cartridge. Therefore, users need a water purification cartridge that is as compact as possible, has a high filtering capacity, and can handle a large total amount of filtered water. [0...

AI Technical Summary

Problems solved by technology

[0005] However, in the water purification cartridge of Patent Document 1, there is a problem that the hollow fiber membrane is accommodated in the cylindrical cover, and the space of the cylindrical cover is not used as a storage space for the filter element.

In addition, there is the following problem: in order to make raw water flow upward in the axial direction after passing through the cylindrical fibrous activated carbon compact, a gap as a flow path is provided between the cylindrical cover and the fibrous activated carbon compact, and the gap The space is not used as the accommodation space of the filter

However, the fibrous activated carbon molded body uses a synthetic resin binder for molding, so there is a problem that the binder accounts for a relatively large proportion of the mass of the fibrous activated carbon molded body, and a sufficiently high filtration capacity cannot be obtained.

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