High-efficiency open network pipe channel reverse osmosis membrane module

Abstract

The invention relates to a high-efficiency open network pipe flow channel reverse osmosis membrane module, including a membrane shell, a central water production pipe arranged in the membrane shell, and several membrane elements arranged around the central water production pipe. The membrane element has an open network pipe flow channel, and the membrane shell One end of the water inlet is provided with a water inlet flange end cover, and the inner side of the water inlet flange end cover is provided with a water inlet swirling flow guide plate; one end of the membrane shell outlet is provided with a water outlet flange end cover, and the inner side of the water outlet flange end cover is installed There is a water outlet swirling diversion plate; the ends of the central water production pipe are respectively provided with water production joints; the inner peripheral wall of the membrane shell is provided with a circular card groove, and a retaining ring is arranged in the card groove, and the retaining ring is tightly pressed against the end cover; Along the water inlet direction, it includes at least two sets of membrane elements connected in series before and after, and the two membrane elements connected in series in the axial direction are communicated through a diversion tube connector. The application can simultaneously take into account the advantages of resistance to pollution and blockage, small pressure loss, uniform water flow distribution, larger effective area of ​​the membrane, simple structure, convenient maintenance, and long service life.

Description

technical field [0001] The invention belongs to the technical field of sewage concentration and purification membrane modules based on the principle of reverse osmosis, and in particular relates to a reverse osmosis membrane module with an open network pipe channel. Background technique [0002] In recent years, membrane technology has developed rapidly and has been widely used in fields such as electric power, metallurgy, petroleum and petrochemical, medicine, food, municipal engineering, sewage reuse, and seawater desalination. The demand for membrane technology and equipment in various projects is even higher. is a rapid increase. [0003] 1. At present, in the field of reverse osmosis membrane application, roll membrane and disc membrane dominate the market. The application of ordinary network-managed reverse osmosis membranes is gradually promoted. Among them, the recognized roll-type reverse osmosis membrane element is a spiral-wound structure, which is formed by sup...

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Problems solved by technology

[0012] The technical problem to be solved by the present invention is that in the prior art, the spiral-wound reverse osmosis membrane element has poor water inlet flow path, poor fouling resistance, easy to cause concentration polarization, and the disc tube type reverse osmosis membrane element The membrane area is small, the maintenance is cumbersome, the investment cost is high, and the influent water distribution is uneven, and the need to set the central tie rod is cumbersome and other shortcomings. Inventing a high-efficiency open network management reverse osmosis membrane module

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