Water purification machine system with pressure-limiting stop valve

Abstract

The invention relates to a water purification machine system with a new stop valve. The source water inlet (225) of the negative pressure stop valve of the system is communicated with source water through a pipeline, the source water outlet (201) is communicated with a source water tap (P) through a pipeline, the water purifier port (207) is directly communicated with the water inlet of a self-priming booster pump (M) through a pipeline, the filtering unit of a water purification machine is not arranged in front of the water inlet of the self-priming booster pump (M), and the water outlet of the self-priming booster pump (M) is communicated with the water inlet of a polypropylene (PP) cotton filter barrel. The water supply cut-off protect point of the water purification machine system in power-off state moves before the PP cotton filter barrel of the water purification machine through the change of the installation position of the water-break pump, thus greatly improving the bearing safety performance of the filtering units of the water purification machine.

Description

technical field [0001] The invention relates to a pure water machine system with a pressure limiting stop valve. Background technique [0002] At present, the three-way valve or three-way joint of the general pure water machine system only has the function of an ordinary three-way, and does not have the function of pressure limiting and filtering. If the machine system causes potential safety hazards, the usual practice is to add a pressure limiting valve in the waterway to solve the problem of high source water pressure. However, both the pressure reducing valve and the three-way valve are used in the pure water machine system, which increases the cost of accessories and installation required for the pure water machine system. On the other hand, the existing valves do not have a filtering function, so that the booster water shut-off pump with water-cut function can only be installed after the first-stage filter unit of the pure water machine system, that is, the PP surface...

AI Technical Summary

Problems solved by technology

[0002] At present, the three-way valve or three-way joint of the general pure water machine system only has the function of an ordinary three-way, and does not have the function of pressure limiting and filtering. If the machine system causes potential safety hazards, the usual practice is to add a pressure limiting valve in the waterway to solve the problem of high source water pressure

However, both the pressure reducing valve and the three-way valve are used in the pure water machine system, which increases the cost of accessories and installation required for the pure water machine system

On the other hand, the existing valves do not have a filtering function, so that the booster water shut-off pump with water-cut function can only be installed after the first-stage filter unit of the pure water machine system, that is, the PP surface filter barrel, that is to say, the PP cotton filter The filter barrel is directly connected to the source water pipe network. When the source water pressure is high, the filter barrel has a greater potential safety hazard under pressure; The combination of pressure cut-off valve and booster cut-off pump is a necessary and feasible solution to improve the safety performance of household water purifiers before installing the first-stage filter unit of the pure water machine, that is, the PP cotton filter barrel.

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