Reverse osmosis water purifier with effect of controlling proportion of waste water to pure water

Abstract

A reverse osmosis water purifier with ratio control of waste water and pure water, comprising a reverse osmosis water purification device, the water inlet of the device is connected to the water inlet channel, the pure water outlet is connected to the pure water channel, the waste water outlet is connected to the waste water channel, and the booster pump is arranged on The water inlet channel and the waste water proportional device are arranged in the waste water channel; the feature also includes an electric control device, the electric control device includes a regulating part with a regulator and a power part with a power semiconductor switch; the output power of the power part is adjusted by adjusting the regulator , Change the operating power of the booster pump, thereby adjusting the working pressure of the reverse osmosis water purifier, to achieve the purpose of adjusting the ratio of pure water to waste water.

Description

Technical field [0001] The invention relates to a reverse osmosis water purifier, in particular to a reverse osmosis water purifier with waste water and pure water ratio control. Background technique [0002] The reverse osmosis water purifier controls the ratio of waste water to pure water by the method of limiting the flow of the waste water proportioner, and the perfect reverse osmosis water purifier should produce pure water as much as possible where the raw water quality is good. Place as much waste water as possible to protect the water purifier; the contradiction between the production of water and the protection of the machine requires a good coordinated control; the current reverse osmosis water purifier adjusts and controls the ratio of waste water to pure water using a waste water proportional device The built-in small hole flow restriction method, the small hole is a fixed aperture. Once set, the ratio of wastewater to pure water is fixed and cannot be adjusted, which...

AI Technical Summary

Problems solved by technology

[0002] The reverse osmosis water purifier controls the ratio of waste water to pure water through the method of limiting the flow of the waste water proportioner, and a perfect reverse osmosis water purifier should produce as much pure water as possible in places with good raw water quality, and in places with poor raw water quality The local government should discharge as much waste water as possible to protect the water purifier; between the contradiction between producing more water and protecting the machine, good coordination and control are required; at present, the method of adjusting and controlling the ratio of waste water to pure water in reverse osmosis water purifiers mostly uses waste water proportioner The built-in small hole current limiting method, the small hole is a fixed aperture, once set, the ratio of waste water to pure water is fixed and cannot be adjusted, which cannot meet the requirements

A small number of waste water proportioners have built-in threaded adjustment rods, which can adjust the aperture size by thread rotation, but they are mechanical angle valves or needle valves, which need to be operated manually. Because of their small apertures, small adjustment changes can cause relatively small aperture ratios. Large changes, so manual adjustment is difficult to be accurate and precise, and random, inaccurate adjustment without professional instruments often has a great impact on the performance of the whole machine, often outweighing the gain

In the patent CN201610007570.2 "Water Purifier with Wastewater Volume Control", a method of adjusting the water flow of the water outlet channel through the electronic control device (wastewater proportional device) is proposed, which realizes the adjustable function of waste water and pure water , can adjust the proportion of wastewater according to the water quality, which is an improvement in the working method of reverse osmosis water purifiers, but this method requires high structural precision, such as the typical value of the wastewater proportioner is 1.2 mm effective diameter aperture, 0.3-1L / min flow rate, The precision of the electronically controlled spool adjustment angle is extremely high. At the same time, the machine cannot be adjusted dynamically and in real time. Unreliable factors such as mechanical life, reliability, and accuracy make its application extremely difficult. For example, after each adjustment, the adjustment mechanism It needs to be reset to ensure its accuracy, and the precision requirement makes it difficult to guarantee its accuracy even if it is reset

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