Water-saving reverse osmosis (RO) machine

Abstract

The invention discloses a water-saving reverse osmosis (RO) machine. An outlet of a pretreatment filter element is communicated with a water inlet, and an outlet of the pretreatment filter element is communicated with an inlet of an RO treatment unit; a booster pump is arranged on an inlet pipeline of the RO treatment unit; a pure water outlet of the RO treatment unit is communicated with a pure water outlet; one end of a reflux pipe is communicated with a concentrated water outlet of the RO treatment unit, and the other end of the reflux pipe is communicated with the inlet of the pretreatment filter element; a high flow throttle valve is arranged on the reflux pipe; a pipeline where concentrated water from the concentrated water outlet of the RO treatment unit passes through is a circulating pipeline; an inlet of a low flow throttle valve is communicated with the circulating pipeline, and an outlet of the low flow throttle valve is emptied. According to the water-saving RO machine, the concentrated water flowing out of the concentrated water outlet of the RO treatment unit completely flows back to the inlet of the pretreatment filter element, and the discharge flow of the low flow throttle valve is obviously less than the discharge flow of a conventional throttle valve, so that the water-saving RO machine can remarkably improve the water resource utilization rate when used for producing water.

Description

technical field [0001] The invention relates to a water-saving RO machine. Background technique [0002] Household and similar reverse osmosis water purifiers usually include a pretreatment filter element, a booster pump, a reverse osmosis processor, a flush valve and a throttle valve. The outlet of the treatment filter element is connected to the inlet of the reverse osmosis processor; the inlet of the flushing valve and the throttle valve are connected to the concentrated water outlet of the reverse osmosis processor, and the outlet is vented; the booster pump is arranged in the water inlet pipeline of the reverse osmosis processor; Purified pure water flows out of the outlet of the reverse osmosis processor. This is the pipe connection method of traditional household and similar reverse osmosis water purifiers, and it has strong adaptability to water sources. For example: for raw water with high hardness value, a throttle valve with a large flow rate can be used to adap...

AI Technical Summary

Problems solved by technology

After the pilot hole of the pilot-operated solenoid valve is blocked, the opening and closing of the solenoid valve will be out of control, and it will not be able to control the opening and closing of the waterway, which will cause the reverse osmosis system to malfunction and cannot operate normally.

[0010] In short, the reverse osmosis water purifiers for household and similar purposes that are currently manufactured and sold in large quantities can be roughly divided into two categories: one is the traditional model, which has the problem of large wastewater discharge during water production and large discharge during flushing , there may still be too much unnecessary flushing water discharge; the other type is the water-saving model, the amount of wastewater discharge is not large during water production, but there is a large amount of flushing water discharge during flushing and the flushing solenoid valve is easy to break out. Faults, and there may be too many unnecessary flushing water discharge problems; and for measures that can solve the excessive unnecessary flushing water discharge problem, it will lead to a significant increase in the complexity of the control system and manufacturing costs, and also With the decrease of the reliability of the control system

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