Composite filter cartridge

Abstract

The invention discloses a composite filter cartridge. The composite filter cartridge comprises a casing, wherein a water inlet channel is formed in the casing, a water outlet pipe is arranged in the casing and sleeved with an annular block made of a filter material, a water through channel is formed between the inner circumferential wall of the annular block and the outer circumferential wall of the water outlet pipe, a water inlet communicated with the water through channel and the inside of the water outlet pipe is formed in the water outlet pipe, and an anti-scale filter cartridge is arranged in the water outlet pipe. The composite filter cartridge is formed by a front filter cartridge and the rear anti-scale filter cartridge through integration, so that size of the whole machine is reduced greatly, the machine is conveniently mounted by a user, the rear anti-scale filter cartridge can be replaced independently when the filter cartridge needs replacement, and the maximum use ratio of the whole filter cartridge can be realized.

Description

technical field [0001] The invention relates to a composite filter element, which belongs to the water purification industry. Background technique [0002] The principle of RO water purification is also called the principle of RO reverse osmosis. RO reverse osmosis is a kind of method such as reverse osmosis, which is currently popular in the world, to filter raw water (physical method) and produce water that can be directly consumed by humans without adding any compounds. Pure water machines (also known as terminal water purification equipment), so now RO water purifiers have been purchased by more and more consumers, but now the volume of RO water purifiers is too large for people living in cities. The pre-filter and post-scale anti-scaling filter of the water purifier are composed of two separate filter elements. The volume of the machine is large and takes up a lot of space, resulting in the installation position of the consumer's home. decanter. Contents of the inven...

AI Technical Summary

Problems solved by technology

[0002] The principle of RO water purification is also called the principle of RO reverse osmosis. RO reverse osmosis is a kind of method such as reverse osmosis, which is currently popular in the world, to filter raw water (physical method) and produce water that can be directly consumed by humans without adding any compounds. Pure water machines (also known as terminal water purification equipment), so now RO water purifiers have been purchased by more and more consumers, but now the volume of RO water purifiers is too large for people living in cities. The pre-filter and post-scale anti-scaling filter of the water purifier are composed of two separate filter elements. The volume of the machine is large and takes up a lot of space, resulting in the installation position of the consumer's home. water vessel

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