Water purification system

Abstract

The invention discloses a water purification system. The water purification system comprises: a membrane filter element provided with a raw water port communicated with a raw water tube, a pure waterport communicated with a pure water tube and a wastewater port communicated with a wastewater tube; a water inlet solenoid valve mounted on the raw water tube; a booster pump mounted on the raw watertube between the membrane filter element and the water inlet solenoid valve; a water taking switch mounted on the pure water tube; a flush valve, wherein the water inlet end of the flush valve is communicated with the pure water tube between the membrane filter element and the water taking switch, and the water outlet end of the flush valve is communicated with the raw water tube between the waterinlet solenoid valve and the membrane filter element; and a raw water branch, wherein the water inlet end of the raw water branch is communicated with the raw water, and the water outlet end of the raw water branch is communicated with the water inlet end of the flush valve. The system makes the membrane filter element full filled with mixed water formed by mixing the raw water and pure water, and small TDS value of the mixed water makes almost no ion diffusion phenomenon occur in the membrane filter element, so it is ensured that the TDS value of pure water in the first cup, produced at nextturn-on of the water purification system also can meet the demands of users.

Description

technical field [0001] The invention relates to the technical field of water purification, in particular to a water purification system. Background technique [0002] The problem of drinking water is a matter of great concern to the public. It is an indisputable fact that there are many substances that are not conducive to health in the water. This is also the main reason why people's awareness of healthy drinking water has been strengthened, and it is also the root of the hot water purification equipment market. [0003] The existing water purification equipment mainly relies on the membrane filter element to filter the raw water. However, when the water purification equipment is in the standby state, there will be raw water, waste water and pure water in the membrane filter element at the same time. In front of the membrane, the pure water is behind the membrane of the membrane filter element, and the TDS values ​​of raw water and waste water are much higher than the TDS v...

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Problems solved by technology

[0003] The existing water purification equipment mainly relies on the membrane filter element to filter the raw water. However, when the water purification equipment is in the standby state, there will be raw water, waste water and pure water in the membrane filter element at the same time. In front of the membrane, the pure water is behind the membrane of the membrane filter element, and the TDS values ​​of raw water and wastewater are much higher than that of pure water. If the water purification equipment is in a standby state for a long time, the raw water and The ions in the wastewater diffuse into the pure water, thereby increasing the TDS value of the pure water. When the water purification equipment is turned on to obtain pure water next time, the TDS value of the first cup of pure water produced will be relatively high, which will affect users. experience

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