Multistage water purifier capable of conveniently replacing filter elements

Abstract

The invention discloses a multistage water purifier capable of conveniently replacing filter elements. The multistage water purifier comprises a machine body and filter element cylinders, wherein insertion holes, a raw water inlet and a purified water outlet are formed in a base of the machine body; each filter element cylinder is inserted in each insertion hole; a water inlet column and a water outlet column are arranged in each insertion hole; a filter element water inlet hole and a filter element water outlet hole are formed in the lower end of each filter element cylinder; water locking components are arranged in the water inlet columns, the filter element water inlet holes, the water outlet columns and the filter element water outlet holes; when the water inlet columns and the water outlet columns are respectively inserted into the filter element water inlet holes and the filter element water outlet holes, two groups of water locking components are opened, so that a water channelis penetrated, and all the filter element cylinders are connected in series on the water channel. The multistage water purifier is capable of preventing the residual water from flowing out when replacing the filter elements and is also capable of preventing the inflow water and the outflow water of the filter elements from mixing during purifying water and preventing the water from leaking from filter element joints at the same time.

Description

technical field [0001] The invention relates to the technical field of water purifiers, in particular to a multi-stage water purifier which is convenient for replacing filter elements. Background technique [0002] The water purifier is a water treatment equipment that purifies the water quality in depth according to the requirements of water use. Its working principle is to introduce raw water into the filter cartridge, and under the action of pressure, water molecules and beneficial minerals flow out through the filter cartridge. Filtration becomes purified water, while harmful substances such as bacteria, colloids, rust, and suspended solids are trapped in the filter element, thereby achieving the effect of filtration and purification. [0003] The Chinese invention patent CN106746145A specification discloses a nine-core water purifier, including a multi-stage purification device. The multi-stage purification device includes a bushing body, a filter element and a water en...

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Problems solved by technology

[0004] The prior art has the following defects: (1) when installing, at first the water inlet pipe interface and the water outlet pipe interface of each filter element base are connected in series through the pipeline, and then the filter element base is fixedly installed on the base of the water purifier by screws , and then insert the filter element on the filter element base, its structure is complex, the integrity is poor, the assembly is troublesome, and there are many joints between the filter element bases, which increases the probability of water leakage;

[0005] (2) This patent uses a rotating body to cooperate with the water sealing structure in the filter element to prevent the remaining water in the filter element from flowing out from the inlet and outlet of the filter element when the filter element is replaced, and the remaining water in other waterways from the inlet pipe interface and outlet of the filter element base. The water pipe interface pops out. However, when installing and dismounting, the filter element needs to drive the rotating body to rotate. The rotating body will cause the sealing ring to wear or the sealing ring will shift, which will affect the sealing performance of the structure and easily cause water inflow and outflow. water leakage

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