Pressure-free nano-filtering machine

Abstract

The invention relates to a pressure-free nano-filtering machine, which is especially suitable for pure water production of municipal directly-supplied tap water (being not less than 0.2 MPa in pressure). The pressure-free nano-filtering machine comprises a sensor, a pressurizing water pump, a pre-treatment device, a nano-filtering device or a reverse osmosis device, a waste water proportioner and a tap. A water inlet of the sensor is connected to a raw water outlet pipe of the tap. A water outlet of the sensor is connected to the water inlet of the pressurizing water pump. The water inlet of the pre-treatment device is connected to the water outlet of the pressurizing water pump. The water outlet of the pre-treatment device is connected to the water inlet of a nano-filtering membrane cylinder body. A filtering core is installed in the pre-treatment device. The nano-filtering device is provided with the cylinder body and a nano-filtering membrane is disposed inside the cylinder body; or the reverse osmosis device is provided with the cylinder body and a reverse osmosis membrane is disposed inside the cylinder body. The waste water proportioner is provided with a waste water proportioner inlet and a waste water proportioner outlet. The tap is provided with a raw water inlet, a raw water outlet, and a pure water outlet and a concentrated water outlet, wherein the raw water inlet pipe is installed on the raw water inlet, a raw water outlet pipe is installed on the raw water outlet, a pure water outlet pipe is installed on the pure water outlet and a concentrated water outlet pipe is installed on the concentrated water outlet. A valve core is installed on a body of the tap.

Description

technical field [0001] The invention relates to a pressureless nanofiltration machine, which is especially suitable for producing pure water from tap water (water pressure ≥ 0.2 MPa) directly supplied by municipal municipalities. Background technique [0002] At present, all kinds of nanofiltration machines on the market are controlled by the end faucet. When the machine is not running, there is still pressure inside the machine. When the water pressure increases or the phenomenon of "water hammer" occurs, there is a risk of water leakage; Wastewater from similar pure water machines is directly discharged into the sewer, causing waste. When the waste water pipe is not fixed firmly, the waste water pipe may even fall off and cause flooding. Contents of the invention [0003] The purpose of the present invention is to provide a pressureless nanofiltration machine for the above shortcomings, which is especially suitable for the production of pure water for general municipal d...

AI Technical Summary

Problems solved by technology

[0002] At present, all kinds of nanofiltration machines on the market are controlled by the end faucet. When the machine is not running, there is still pressure inside the machine. When the water pressure increases or the phenomenon of "water hammer" occurs, there is a risk of water leakage; Wastewater from similar pure water machines is directly discharged into the sewer, causing waste. When the waste water pipe is not fixed firmly, the waste water pipe may even fall off and cause flooding

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