Automatic front and back washing ultrafiltration reverse osmosis water purification system provided with water storage diaphragm pressure tank

Abstract

The invention provides an automatic front and back washing ultrafiltration reverse osmosis water purification system provided with a water storage diaphragm pressure tank. The system comprises a water inlet pipeline, a water draining pipeline, an ultrafiltration purified water conveying pipeline and a reverse osmosis pure water conveying pipeline and also comprises an ultrafiltration membrane component, a reverse osmosis membrane component and a diaphragm pressure tank, wherein an electric washing ball valve is connected with the water draining pipeline in series, the ultrafiltration purified water conveying pipeline is divided into a first branch and a second branch, a reverse osmosis pure water outlet of the reverse osmosis membrane component is connected with the reverse osmosis pure water conveying pipeline, and the reverse osmosis pure water conveying pipeline is divided into a third branch and a fourth branch. The system has the beneficial effects that front washing and back washing can be carried out on an ultrafiltration membrane at the same time when the water purification system is used, and thus the service life of the membrane is prolonged; and besides, the diaphragm pressure tank which is dual-purpose can be used for storing reverse osmosis pure water and carrying out back washing on the ultrafiltration membrane. The water purification system can provide high-flow ultrafiltration purified water and pure water at the same time, and thus the usage requirements of people are met.

Description

technical field [0001] The invention belongs to the field of water purification treatment, in particular to an automatic front and back flushing ultrafiltration reverse osmosis water purification system with a water storage diaphragm pressure tank. Background technique [0002] In the existing water purification system, the water purification process is usually: pre-filtration device → pre-filtration device → ultrafiltration device → reverse osmosis device, the raw water is converted into purified water containing minerals through the ultrafiltration device, and transformed into For pure water, the large particles in the raw water are removed through the pre-filtration device and the pre-filtration device, and the ultra-filtration device intercepts microorganisms, colloids, suspended solids and macromolecular organic matter, etc., and the water filtered by the ultra-filtration device becomes mineral-containing For water purification of substances, the reverse osmosis device ...

AI Technical Summary

Problems solved by technology

[0002] In the existing water purification system, the water purification process is usually: pre-filtration device → pre-filtration device → ultrafiltration device → reverse osmosis device, the raw water is converted into purified water containing minerals through the ultrafiltration device, and transformed into For pure water, the large particles in the raw water are removed through the pre-filtration device and the pre-filtration device, and the ultra-filtration device intercepts microorganisms, colloids, suspended solids and macromolecular organic matter, etc., and the water filtered by the ultra-filtration device becomes mineral-containing For water purification of substances, the reverse osmosis device removes ions and small molecules in the water to become pure water. The filter element and filter membrane of the above-mentioned water purification system do not have automatic cleaning function, and need to be replaced after about 3-6 months of use. The purchase of filter elements and filter membranes requires professionals to replace them, which brings a lot of inconvenience to users and increases the cost of use

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