End filter capable of automatically closing water inlet and water outlet during maintenance and replacement

Abstract

The invention relates to a prefilter capable of automatically closing a water inlet and a water outlet during maintenance and replacement. The prefilter comprises a filter bottle body, a tank assembly, a first seal assembly and a second seal assembly, wherein the tank assembly comprises an inner cover, a tank body and a filtering mechanism coaxially arranged in the tank body; at least one seal part is arranged on the circumference between an upper cover and the inner cover in an interference fit manner; the first seal assembly is arranged in a water inlet channel; the second seal assembly is arranged in a water outlet channel; when the tank assembly is assembled with an upper cover assembly, the water inlet channel and the water outlet channel are communicated; when the tank assembly is disassembled from the upper cover assembly, the water inlet channel and the water outlet channel are closed. The problem that a tap water main waterway switch needs to be frequently switched on and offbefore replacement of a filter element (filter mechanism) of a similar pre-filter in the current market is solved, people injuries by laser water, especially possible injuries caused by a hot water pipe, due to misoperation of the switch can be prevented.

Description

technical field [0001] The invention relates to a terminal filter capable of automatically closing a water inlet and outlet during maintenance and replacement, and belongs to the technical field of water purification equipment. Background technique [0002] The terminal filter in the prior art includes: a water inlet and outlet mechanism, a head connected to the water inlet and outlet mechanism, a filter bottle connected to the head, a drain seal connected to the lower end of the filter bottle, and a drain ball valve connected to the drain seal. A filter mechanism is arranged in the filter bottle. During use, water flows into the gap between the filter bottle and the filter mechanism from the water inlet, flows into the center of the filter mechanism after being filtered by the filter mechanism, and then flows from the center of the filter mechanism to the water outlet. [0003] The existing terminal filter, the filter mechanism will be blocked after long-term use, and need...

AI Technical Summary

Problems solved by technology

[0003] The existing terminal filter, the filter mechanism will be blocked after long-term use, and needs to be replaced or cleaned, but the water inlet and outlet cannot be automatically closed during maintenance and replacement. The operation leads to the occurrence of the injury caused by the jet water flow, especially the possible injury caused by the hot water pipe, which is very inconvenient to operate. The present invention aims to solve this technical problem

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