Water purifying machine system with novel check valve

Abstract

The invention relates to a water purifying machine system with a novel check valve, wherein a source water inlet (225) of a negative pressure check valve of the system is communicated with source water via a pipeline; a source water outlet (201) is communicated with a source water faucet (P) via a pipeline; a water purifier connector (207) is directly communicated with the water inlet end of a self-priming booster pump (M) via a pipeline; the water inlet end of the self-priming booster pump (M) has no filter unit of the water purifier; and the water outlet end of the self-priming booster pump (M) is communicated with the water inlet end of a PP cotton filter bucket (L). The water purifying machine system forwards moves the installment position of a water-break pump in the front of the PP cotton filter bucket of the water purifying machine when the machine is shut down at the water-break protecting point, thereby significantly improving the bearing safety performance of each filter unit of the water purifying machine system.

Description

technical field [0001] The invention relates to a pure water machine system with a novel cut-off valve. Background technique [0002] At present, the three-way valve or three-way joint of the pure water machine system only has the function of an ordinary three-way, and does not have the function of pressure limiting and filtering. The 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 s...

AI Technical Summary

Problems solved by technology

[0002] At present, the three-way valve or three-way joint of the pure water machine system only has the function of an ordinary three-way, and does not have the function of pressure limiting and filtering. The 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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