RO membrane filter

A membrane filter and membrane element technology, applied in the field of water purification, can solve the problems of reduced filtration efficiency of RO membrane elements, easy fouling of RO membrane elements, and existence of dead ends in filtration, so as to improve practicability, increase contact time, and save cost effect

CN108479401APending Publication Date: 2018-09-04SHANGHAI OZNER WATER PURIFICATION SCI & TECH DEV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-09-04

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Abstract

The invention provides a RO membrane filter. An end cover is arranged at one end of a shell, a waste water outlet is arranged at the end cover, and a water inlet and a pure water outlet are formed inthe other end of the shell; a RO membrane element is arranged in the shell, a water nozzle is formed in one end of the RO membrane element, a sealing ring is arranged between the end, close to the water nozzle, of the RO membrane element and the shell, a waste water area is defined between the outer diameter part at one side, at which the sealing ring is close to the end cover, of the RO membraneelement and the inner wall of the shell, a water inlet area is defined between the outer diameter part, at the other side of the sealing ring, of the RO membrane element and the inner wall of the shell, the water inlet is communicated with the water inlet area at the end surface of the RO membrane element, the pure water outlet is connected to the water nozzle, and the waste water outlet is communicated with the waste water area; a support ring sleeves the end, close to the end cover, of the RO membrane element for fixing the end cover inside the shell, and a gap is formed between the supportring and the inner wall of the shell. The RO membrane filter not only improves the recovery rate of the RO membrane element, but also increases the total water purification amount, and compared with acommon RO membrane element, a center tube and a wrapping tape are shortened as the width of a membrane is reduced, so that the cost is reduced.
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Description

technical field

[0001] The invention relates to the field of water purification, in particular to an RO membrane filter. Background technique

[0002] Common RO membrane elements on the market are formed by a composite multi-layer winding center tube composed of RO diaphragms, water inlet grids, and pure water diversion nets. The center tube is placed between folded RO diaphragms, and the water inlet grid is located at the RO The water inlet flow channel formed between the folded inner surfaces of the membrane, the pure water flow guide network is located between the folded outer surfaces of the reverse osmosis membrane to form a water flow channel, the ordinary RO membrane element is the RO membrane on both sides The end face and the wall of the winding center tube are bonded with glue, and the entire outer surface is wrapped and sealed with tape, and a layer of sealing ring is added.

[0003] Ordinary RO membrane elements are matched with ordinary RO membrane shells to ma...

Examples

Embodiment Construction

[0020] In the following description, numerous specific details are given in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without one or more of these details. In other examples, some technical features known in the art are not described in order to avoid confusion with the present invention.

[0021] In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description, so as to illustrate the technical solution of the present invention. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments besides these detailed descriptions.

[0022] Figure 1-2 A schematic diagram of a commonly used RO membrane filter is shown at present. An end cover 2 is fixed at one end of the housing 1. A sealing ring 3 is p...