CN215388744U

CN215388744U - Efficient wear-resistant reverse osmosis membrane with long service life

Info

Publication number: CN215388744U
Application number: CN202121696057.1U
Authority: CN
Inventors: 黄海兵
Original assignee: Shanxi Blue Sky Blue Water Technology Co ltd
Current assignee: Shanxi Blue Sky Blue Water Technology Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-01-04
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a high-efficiency wear-resistant reverse osmosis membrane with long service life, which comprises a winding drum, wherein a reverse osmosis membrane body is sleeved on the outer surface of the winding drum, the reverse osmosis membrane body comprises a substrate layer, and a first high-efficiency wear-resistant layer comprises a polytetrafluoroethylene material layer and a mixed cellulose ester material layer. According to the utility model, the first high-efficiency wear-resistant layer is fixedly connected to the top of the substrate layer, the first high-efficiency wear-resistant layer comprises the polytetrafluoroethylene material layer and the mixed cellulose ester material layer, both the polytetrafluoroethylene material layer and the mixed cellulose ester material layer have the advantages of high efficiency and wear resistance, the second high-efficiency wear-resistant layer is fixedly connected to the bottom of the substrate layer, the second high-efficiency wear-resistant layer comprises the polypropylene material layer and the nylon film layer, both the polypropylene material layer and the nylon film layer have the advantages of high efficiency and wear resistance, the purpose of long service life is achieved, and the problems that the conventional reverse osmosis membrane is easy to wear and affects the service life due to short service life are solved.

Description

Efficient wear-resistant reverse osmosis membrane with long service life

Technical Field

The utility model relates to the technical field of reverse osmosis membranes, in particular to a reverse osmosis membrane which is efficient, wear-resistant and long in service life.

Background

The reverse osmosis membrane is an artificial semipermeable membrane with certain characteristics and is a core component of a reverse osmosis technology, the principle of the reverse osmosis technology is that under the action of osmotic pressure higher than that of a solution, other substances cannot permeate the semipermeable membrane to separate the substances from the water, the membrane aperture of the reverse osmosis membrane is very small, so that dissolved salts, colloids, microorganisms, organic matters and the like in the water can be effectively removed, a system has the advantages of good water quality, low energy consumption, no pollution, simple process, simple and convenient operation and the like, the reverse osmosis membrane is a core element for realizing reverse osmosis, is an artificial semipermeable membrane with certain characteristics and is generally made of high polymer materials, such as cellulose acetate membranes, aromatic polyhydrazide membranes and aromatic polyamide membranes, the diameter of surface micropores is generally between 0.5 and 10nm, and the size of permeability is related to the chemical structure of the membrane, some high molecular materials have good salt repellency, but the water permeation rate is not good, and some high molecular materials have more hydrophilic groups in chemical structures, so that the water permeation rate is relatively high, therefore, a satisfactory reverse osmosis membrane should have proper permeation amount or salt rejection rate, and the reverse osmosis membrane should have the following characteristics: (1) high salt rejection at high flow rates; (2) the mechanical strength is high and the service life is long; (3) can perform functions under lower operating pressure; (4) can resist the influence of chemical or biochemical action; (5) the influence of factors such as pH value, temperature and the like is small; (6) the membrane preparation raw material has easy source, simple and convenient processing and low cost, the structure of the reverse osmosis membrane comprises two types of asymmetric membrane and homogeneous membrane, the currently used membrane materials mainly comprise cellulose acetate and aromatic polyamide, and the components comprise hollow fiber type, roll type, plate frame type and tube type, can be used for chemical unit operations such as separation, concentration, purification and the like, and is mainly used in the pure water preparation and water treatment industries, and the principle is as follows: reverse osmosis is also known as reverse osmosis, a membrane separation operation that separates a solvent from a solution using a pressure difference as a driving force, applies pressure to a feed liquid on one side of a membrane, and when the pressure exceeds its osmotic pressure, the solvent undergoes reverse osmosis against the direction of natural osmosis, thereby obtaining a permeated solvent, i.e., a permeate, on the low pressure side of the membrane; the equipment used for reverse osmosis is mainly hollow fiber type or roll type membrane separation equipment, the reverse osmosis membrane can intercept various inorganic ions, colloidal substances and macromolecular solutes in water so as to obtain purified water, and can also be used for pre-concentration of macromolecular organic matter solution, and the reverse osmosis membrane is rapidly developed in nearly 20 years due to simple reverse osmosis process and low energy consumption, is widely applied to desalination of seawater and brackish water (brine), softening of water for boilers and wastewater treatment, and is combined with ion exchange to prepare high-purity water.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-efficiency wear-resistant reverse osmosis membrane with long service life, which has the advantage of long service life and solves the problem that the service life of the conventional reverse osmosis membrane is influenced because the conventional reverse osmosis membrane is easy to wear in use due to short service life.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a wear-resisting long service life's of high efficiency reverse osmosis membrane, includes the receipts spool, the surface cover of receipts spool is equipped with reverse osmosis membrane body, reverse osmosis membrane body includes the stratum basale, the first high-efficient wearing layer of top fixedly connected with of stratum basale, first high-efficient wearing layer includes polytetrafluoroethylene material layer and mixed cellulose ester material layer, the high-efficient wearing layer of bottom fixedly connected with second of stratum basale, the high-efficient wearing layer of second includes polypropylene material layer and nylon film layer.

Preferably, the mixed cellulose ester material layer is positioned on the top of the substrate layer, and a polytetrafluoroethylene material layer is fixedly connected to the top of the mixed cellulose ester material layer.

Preferably, the thickness of the polytetrafluoroethylene material layer is the same as that of the mixed cellulose ester material layer, and the thickness of the first high-efficiency wear-resistant layer is the same as that of the substrate layer.

Preferably, the polypropylene material layer is located at the bottom of the substrate layer, and the nylon membrane layer is fixedly connected to the bottom of the polypropylene material layer.

Preferably, the thickness of the polypropylene material layer is the same as that of the nylon film layer, and the thickness of the second efficient wear-resistant layer is the same as that of the first efficient wear-resistant layer.

Preferably, the winding drum is made of paper materials, and the winding drum is circular in shape.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model is characterized in that the top of the substrate layer is fixedly connected with a first high-efficiency wear-resistant layer, the first high-efficiency wear-resistant layer comprises a polytetrafluoroethylene material layer and a mixed cellulose ester material layer, the polytetrafluoroethylene material layer has the advantage of strong tolerance and can filter various strong solvents, the mixed cellulose ester material layer has the advantages of light weight and uniform structure, the polytetrafluoroethylene material layer and the mixed cellulose ester material layer both have the advantages of high efficiency and wear resistance, the bottom of the substrate layer is fixedly connected with a second high-efficiency wear-resistant layer, the second high-efficiency wear-resistant layer comprises a polypropylene material layer and a nylon film layer, the polypropylene material layer has the advantages of high temperature resistance and stable chemical property, the nylon film layer has the advantage of corrosion resistance, the polypropylene material layer and the nylon film layer both have the advantages of high efficiency and wear resistance, the purpose of long service life is achieved, and the problem that the service life of the existing reverse osmosis membrane is short is solved, the problem that the service life of the product is affected because the product is easy to wear when in use.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of a reverse osmosis membrane body according to the present invention;

FIG. 3 is a schematic structural view of a first high-efficiency wear-resistant layer according to the present invention;

fig. 4 is a schematic structural view of a second high-efficiency wear-resistant layer according to the utility model.

In the figure: 1. winding the roll; 2. a reverse osmosis membrane body; 21. a base layer; 22. a first highly effective wear resistant layer; 221. a layer of polytetrafluoroethylene material; 222. a layer of mixed cellulose ester material; 23. a second highly effective wear resistant layer; 231. a layer of polypropylene material; 232. a nylon membrane layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The winding drum 1, the reverse osmosis membrane body 2, the substrate layer 21, the first high-efficiency wear-resistant layer 22, the polytetrafluoroethylene material layer 221, the mixed cellulose ester material layer 222, the second high-efficiency wear-resistant layer 23, the polypropylene material layer 231 and the nylon membrane layer 232 are all universal standard parts or parts known by those skilled in the art, and the structure and principle of the winding drum are known by the technical manual or by a conventional experimental method.

Referring to fig. 1-4, a reverse osmosis membrane with high efficiency, wear resistance and long service life comprises a winding drum 1, the winding drum 1 is made of paper material, the winding drum 1 is circular, a reverse osmosis membrane body 2 is sleeved on the outer surface of the winding drum 1, the reverse osmosis membrane body 2 comprises a base layer 21, a first high efficiency wear-resistant layer 22 is fixedly connected to the top of the base layer 21, the first high efficiency wear-resistant layer 22 comprises a polytetrafluoroethylene material layer 221 and a mixed cellulose ester material layer 222, the mixed cellulose ester material layer 222 is located on the top of the base layer 21, the polytetrafluoroethylene material layer 221 is fixedly connected to the top of the mixed cellulose ester material layer 222, the thickness of the polytetrafluoroethylene material layer 221 is the same as that of the mixed cellulose ester material layer 222, the thickness of the first high efficiency wear-resistant layer 22 is the same as that of the base layer 21, and a second high efficiency wear-resistant layer 23 is fixedly connected to the bottom of the base layer 21, the second high-efficiency wear-resistant layer 23 comprises a polypropylene material layer 231 and a nylon film layer 232, the polypropylene material layer 231 is located at the bottom of the base layer 21, the bottom of the polypropylene material layer 231 is fixedly connected with the nylon film layer 232, the thickness of the polypropylene material layer 231 is the same as that of the nylon film layer 232, the thickness of the second high-efficiency wear-resistant layer 23 is the same as that of the first high-efficiency wear-resistant layer 22, the first high-efficiency wear-resistant layer 12 is fixedly connected with the top of the base layer 11, the first high-efficiency wear-resistant layer 12 comprises a polytetrafluoroethylene material layer 121 and a mixed cellulose ester material layer 122, the polytetrafluoroethylene material layer 121 has the advantage of strong tolerance, various strong solvents can be filtered, the mixed cellulose ester material layer 122 has the advantages of light weight, thin and uniform structure, the polytetrafluoroethylene material layer 121 and the mixed cellulose ester material layer 122 both have the advantages of high efficiency and wear resistance, the second high-efficiency wear-resistant layer 13 is fixedly connected with the bottom of the base layer 11, the high-efficient wearing layer 13 of second includes polypropylene material layer 131 and nylon membrane layer 132, and polypropylene material layer 131 possesses the stable advantage of high temperature resistant and chemical property, and nylon membrane layer 132 possesses corrosion-resistant advantage, and polypropylene material layer 131 all has high-efficient wear-resisting advantage with nylon membrane layer 132, has reached long service life's purpose.

When in use, the first high-efficiency wear-resistant layer 12 is fixedly connected to the top of the base layer 11, the first high-efficiency wear-resistant layer 12 comprises a polytetrafluoroethylene material layer 121 and a mixed cellulose ester material layer 122, the polytetrafluoroethylene material layer 121 has the advantage of strong tolerance, and can filter various strong solvents, the mixed cellulose ester material layer 122 has the advantages of light weight, light weight and uniform structure, the polytetrafluoroethylene material layer 121 and the mixed cellulose ester material layer 122 both have the advantages of high efficiency and wear resistance, the second high-efficiency wear-resistant layer 13 is fixedly connected to the bottom of the base layer 11, the second high-efficiency wear-resistant layer 13 comprises a polypropylene material layer 131 and a nylon film layer 132, the polypropylene material layer 131 has the advantages of high temperature resistance and stable chemical property, the nylon film layer 132 has the advantage of corrosion resistance, the polypropylene material layer 131 and the nylon film layer 132 both have the advantages of high efficiency and wear resistance, and the purpose of long service life is achieved, the problem of current reverse osmosis membrane life short, easily wearing and tearing when leading to its use influence life is solved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high-efficient wear-resisting long service life's reverse osmosis membrane, includes winding drum (1), its characterized in that: the outer surface cover of receipts spool (1) is equipped with reverse osmosis membrane body (2), reverse osmosis membrane body (2) include stratum basale (21), the first high-efficient wearing layer (22) of top fixedly connected with of stratum basale (21), first high-efficient wearing layer (22) include polytetrafluoroethylene material layer (221) and mix cellulose ester material layer (222), the high-efficient wearing layer (23) of bottom fixedly connected with second of stratum basale (21), the high-efficient wearing layer (23) of second include polypropylene material layer (231) and nylon membranous layer (232).

2. The reverse osmosis membrane of claim 1 which is highly effective, resistant to wear and has a long service life, wherein: the mixed cellulose ester material layer (222) is positioned on the top of the base layer (21), and a polytetrafluoroethylene material layer (221) is fixedly connected to the top of the mixed cellulose ester material layer (222).

3. The reverse osmosis membrane of claim 1 which is highly effective, resistant to wear and has a long service life, wherein: the thickness of the polytetrafluoroethylene material layer (221) is the same as that of the mixed cellulose ester material layer (222), and the thickness of the first high-efficiency wear-resistant layer (22) is the same as that of the base layer (21).

4. The reverse osmosis membrane of claim 1 which is highly effective, resistant to wear and has a long service life, wherein: the polypropylene material layer (231) is located at the bottom of the base layer (21), and a nylon film layer (232) is fixedly connected to the bottom of the polypropylene material layer (231).

5. The reverse osmosis membrane of claim 1 which is highly effective, resistant to wear and has a long service life, wherein: the thickness of the polypropylene material layer (231) is the same as that of the nylon film layer (232), and the thickness of the second efficient wear-resistant layer (23) is the same as that of the first efficient wear-resistant layer (22).

6. The reverse osmosis membrane of claim 1 which is highly effective, resistant to wear and has a long service life, wherein: the winding drum (1) is made of paper materials, and the winding drum (1) is circular.