CN217909793U - External pressure type hollow fiber reverse osmosis membrane assembly and reverse osmosis system - Google Patents
External pressure type hollow fiber reverse osmosis membrane assembly and reverse osmosis system Download PDFInfo
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- CN217909793U CN217909793U CN202221652118.9U CN202221652118U CN217909793U CN 217909793 U CN217909793 U CN 217909793U CN 202221652118 U CN202221652118 U CN 202221652118U CN 217909793 U CN217909793 U CN 217909793U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The utility model provides an external pressure type hollow fiber reverse osmosis membrane assembly and a reverse osmosis system, which are formed by bundling a pressure-resistant membrane shell, an upper end cover, a lower end cover and a hollow fiber reverse osmosis membrane in the pressure-resistant membrane shell, and are beneficial to further reducing the investment cost of a reverse osmosis membrane device; in addition, a water production outlet of an upper end cover of the external pressure type hollow fiber reverse osmosis membrane component is open, and a water production pump is arranged on a water production pipe of the upper end cover to form a reverse osmosis system with two ends producing water; the water production outlet of the upper end cover is closed to form a reverse osmosis system with single end producing water; the water outlet of the upper end cover is used as the feed inlet of the upper end cover, and the feed pipe of the upper end cover is provided with a water inlet pump to form an energy-saving reverse osmosis concentration system. The utility model provides an external pressure type hollow fiber reverse osmosis membrane subassembly and reverse osmosis system to further reducing reverse osmosis membrane device running cost, widen reverse osmosis membrane technical application field and have positive meaning.
Description
Technical Field
The utility model belongs to the technical field of reverse osmosis, especially, relate to an external pressure type hollow fiber reverse osmosis membrane subassembly and reverse osmosis system.
Background
The reverse osmosis membrane technology utilizes the selective permeability of a reverse osmosis membrane to separate water (solvent) and ions (or small molecules) in feed liquid, thereby achieving the purpose of purification or concentration. The technology has the advantages of low energy consumption, simple process, easy engineering realization and the like, and is widely applied to the fields of seawater and brackish water desalination, drinking water purification, pure water preparation, industrial product concentration of chemistry, food, pharmacy and the like, wastewater treatment and the like. The reverse osmosis membrane module is the minimum basic unit for assembling the reverse osmosis membrane into a practical application and is a main component of a reverse osmosis membrane device. Currently, commercial reverse osmosis membrane modules are mainly of plate frame, tubular, roll and hollow fiber types. Among them, the roll type and hollow fiber type have higher filling density, are easy to produce in large scale, can be applied in large scale, and are the main structural forms in reverse osmosis water treatment.
The filling density of the hollow fiber reverse osmosis membrane component can be more than ten times of that of the roll type reverse osmosis membrane component, and the investment cost of a reverse osmosis membrane device is further reduced. On the other hand, can utilize hollow fiber reverse osmosis membrane subassembly structural feature, through pouring into lower concentration feed liquid into hollow fiber reverse osmosis membrane silk capillary, reduce reverse osmosis membrane both sides feed liquid osmotic pressure difference to reduce reverse osmosis membrane device required operating pressure and energy consumption, this has positive meaning to further reducing reverse osmosis membrane device running cost, widen reverse osmosis membrane technical application.
Chinese patent CN210079269U provides a column-shaped hollow reverse osmosis membrane element, which is an internal pressure type reverse osmosis membrane element, and the dense selection layer of the reverse osmosis membrane is on the inner surface of the membrane tube. The internal pressure type hollow fiber reverse osmosis membrane component has large pressure loss, difficult membrane cleaning and high requirement on the quality of inlet water.
Therefore, it is necessary to develop an external pressure type hollow fiber reverse osmosis membrane module, which further reduces the investment and operation cost of the reverse osmosis membrane device and widens the application field of the reverse osmosis membrane technology.
SUMMERY OF THE UTILITY MODEL
The first objective of the present invention is to provide an external pressure type hollow fiber reverse osmosis membrane module, which is not enough in the prior art.
To this end, the above object of the present invention is achieved by the following technical solutions:
an external pressure type hollow fiber reverse osmosis membrane component is characterized in that: the external pressure type hollow fiber reverse osmosis membrane module comprises: the pressure-resistant membrane shell comprises a pressure-resistant membrane shell, an upper end cover and a lower end cover, wherein the upper end cover and the lower end cover are connected with two ends of the pressure-resistant membrane shell; a hollow fiber reverse osmosis membrane cluster is arranged in the pressure-resistant membrane shell, and two ends of the hollow fiber reverse osmosis membrane cluster are respectively communicated with the inner cavity of the upper end cover and the inner cavity of the lower end cover;
the pressure-resistant membrane shell is spaced from the inner cavity of the upper end cover and the inner cavity of the lower end cover;
a stock solution inlet arranged towards the hollow fiber reverse osmosis membrane bundling direction is formed in the lower side wall of the pressure-resistant membrane shell, and a concentrated water outlet arranged back to the hollow fiber reverse osmosis membrane bundling direction is formed in the upper side wall of the pressure-resistant membrane shell;
and the upper end cover and the lower end cover are both provided with water production outlets.
When adopting above-mentioned technical scheme, the utility model discloses can also adopt or make up and adopt following technical scheme:
as a preferred technical solution of the utility model: the joints of the pressure-resistant membrane shell and the upper end cover and the lower end cover are respectively provided with an epoxy resin cementing layer, and the epoxy resin cementing layers form intervals among the pressure-resistant membrane shell, an inner cavity of the upper end cover and an inner cavity of the lower end cover;
the epoxy resin cementing layer is used for wrapping and fixing the end part of the hollow fiber reverse osmosis membrane cluster.
As a preferred technical solution of the utility model: the upper end cover and the lower end cover are respectively provided with a limiting part protruding inwards, and the limiting parts are used for abutting against the epoxy resin cementing layer from top to bottom so as to prevent the epoxy resin cementing layer from being separated or prevent the hollow fiber reverse osmosis membrane cluster from being broken when the reverse osmosis membrane assembly runs at high pressure.
As an optimal technical solution of the utility model: the limiting part is an annular limiting ring.
As an optimal technical solution of the utility model: the end part of the pressure-resistant membrane shell is provided with a first flange protruding towards the outer side of the circumference, the upper end cover and the lower end cover are provided with a second flange protruding towards the outer side of the circumference, and the first flange is matched with the second flange and is connected and fastened through a hoop.
As an optimal technical solution of the utility model: and the concentrated water outlet is provided with an exhaust port, the exhaust port is used for exhausting the shell side air of the reverse osmosis membrane module when low-pressure water is fed, and the exhaust port is in a closed state after being exhausted.
As an optimal technical solution of the utility model: the pressure-resistant membrane shell, the upper end cover and the lower end cover are made of fiber reinforced plastics, and the pressure-resistant grade is 1000 PSI.
As an optimal technical solution of the utility model: the hollow fiber reverse osmosis membrane cluster is formed by assembling a plurality of hollow fiber reverse osmosis membrane filaments, and the filling density of the hollow fiber reverse osmosis membrane is 8000-15000 m 2 /m 3 ；
The hollow fiber reverse osmosis membrane material is a cellulose acetate asymmetric reverse osmosis membrane or an aromatic polyamide composite reverse osmosis membrane;
the cellulose acetate asymmetric reverse osmosis membrane is prepared by a melt spinning-phase separation method;
the aromatic polyamide composite reverse osmosis membrane is prepared by an interfacial polymerization method;
the compact selective layer of the hollow fiber reverse osmosis membrane filaments is arranged on the outer surface of the membrane filaments.
The utility model also aims to provide a reverse osmosis system with external pressure type hollow fiber reverse osmosis membrane component aiming at the defects existing in the prior art.
To this end, the above object of the present invention is achieved by the following technical solutions:
a reverse osmosis system having the external pressure type hollow fiber reverse osmosis membrane module as described above, characterized in that: when the water production outlet of the upper end cover is open, a water production pump is arranged on the water production pipe of the upper end cover to form a reverse osmosis system with two ends producing water;
when the water production outlet of the upper end cover is closed, a reverse osmosis system with single end producing water is formed;
when the water outlet of the upper end cover is used as the feed inlet of the upper end cover, the feed pipe of the upper end cover is provided with a water inlet pump to form an energy-saving reverse osmosis concentration system.
The utility model provides an external pressure type hollow fiber reverse osmosis membrane assembly and a reverse osmosis system, which are formed by bundling a pressure-resistant membrane shell, an upper end cover, a lower end cover and a hollow fiber reverse osmosis membrane in the pressure-resistant membrane shell, and are beneficial to further reducing the investment cost of a reverse osmosis membrane device; in addition, a water production outlet of an upper end cover of the external pressure type hollow fiber reverse osmosis membrane component is open, and a water production pump is arranged on a water production pipe of the upper end cover to form a reverse osmosis system with two ends producing water; the water production outlet of the upper end cover is closed to form a reverse osmosis system with single end producing water; the water outlet of the upper end cover is used as the feed inlet of the upper end cover, and the feed pipe of the upper end cover is provided with a water inlet pump to form an energy-saving reverse osmosis concentration system. The utility model provides an external pressure type hollow fiber reverse osmosis membrane subassembly and reverse osmosis system to further reducing reverse osmosis membrane device running cost, widen reverse osmosis membrane technical application field and have positive meaning.
Drawings
Fig. 1 is a schematic view of an external pressure type hollow fiber reverse osmosis membrane module provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
An external pressure type hollow fiber reverse osmosis membrane module comprising: the pressure-resistant membrane shell 110, an upper end cover 121 and a lower end cover 122 connected with two ends of the pressure-resistant membrane shell 110, wherein an inner cavity of the upper end cover 121 is arranged in the upper end cover 121, and an inner cavity of the lower end cover 122 is arranged in the lower end cover 122; a hollow fiber reverse osmosis membrane cluster 130 is arranged in the pressure-resistant membrane shell 110, and two ends of the hollow fiber reverse osmosis membrane cluster 130 are respectively communicated with the inner cavity of the upper end cover 121 and the inner cavity of the lower end cover 122;
the pressure-resistant membrane shell 110 is spaced from the inner cavities of the upper end cover 121 and the lower end cover 122;
a stock solution inlet 111 arranged towards the direction of the hollow fiber reverse osmosis membrane cluster 130 is arranged on the lower side wall of the pressure-resistant membrane shell 110, and a concentrated water outlet 112 arranged back to the direction of the hollow fiber reverse osmosis membrane cluster 130 is arranged on the upper side wall of the pressure-resistant membrane shell 110; the concentrated water outlet 112 and the stock solution inlet 111 are arranged in a diagonal manner;
the upper end cover 121 and the lower end cover 122 are both provided with a water production outlet 140;
the upper end cap 121 and the lower end cap 122 are manufactured by the same mold.
The joints of the pressure-resistant membrane shell 110, the upper end cover 121 and the lower end cover 122 are respectively provided with an epoxy resin cementing layer 150, and the epoxy resin cementing layer 150 forms a space between the pressure-resistant membrane shell 110 and the inner cavities of the upper end cover 121 and the lower end cover 122;
the epoxy resin adhesive layer 150 is used for wrapping and fixing the end part of the hollow fiber reverse osmosis membrane bundle 130.
The upper end cover 121 and the lower end cover 122 are respectively provided with a limiting part 121b and a limiting part 122b which protrude inwards, and the limiting parts 121b and 122b are used for abutting against the epoxy resin cementing layer 150 up and down so as to prevent the epoxy resin cementing layer 150 from falling off or prevent the hollow fiber reverse osmosis membrane bundle 130 from being broken when the reverse osmosis membrane assembly runs at high pressure.
In this embodiment: the stoppers 121b and 122b are annular stoppers.
The end of the pressure-resistant membrane shell 110 is provided with a first flange 110a protruding to the outside of the circumference, the upper end cover 121 and the lower end cover 122 are provided with second flanges 121a and 122a protruding to the outside of the circumference, and the first flange 110a and the second flanges 121a and 122a are matched and fastened through hoops.
The concentrated water outlet 112 is provided with an air outlet 113, and the air outlet 113 is used for exhausting the shell side air of the reverse osmosis membrane module during low-pressure water inlet and is in a closed state after being exhausted.
The internal space of the external pressure type hollow fiber reverse osmosis membrane component is divided into an upper end cover 121 cavity, a lower end cover 122 cavity, a membrane component shell pass and a membrane bundling capillary tube pass by an upper epoxy resin cementing layer 150, a lower epoxy resin cementing layer 150 and a hollow fiber reverse osmosis membrane bundling 130. The pretreated high-pressure stock solution enters a membrane module shell pass through a stock solution inlet 111 and flows upwards along the membrane module shell pass, water molecules in the stock solution overcome osmotic pressure difference under high-pressure driving and permeate a hollow fiber reverse osmosis membrane to enter a membrane bundling capillary pass, and are collected in an upper end cover 121 cavity and a lower end cover 122 cavity under the driving of a water production pump and are respectively produced through water production outlets 140 on the upper end cover 121 and the lower end cover 122; the stock solution is concentrated and then is output through a concentrated water outlet 112.
The pressure-resistant membrane shell 110, the upper end cover 121 and the lower end cover 122 are made of fiber reinforced plastics, and the pressure-resistant grade is 1000 PSI.
The hollow fiber reverse osmosis membrane cluster 130 is formed by gathering a plurality of hollow fiber reverse osmosis membrane filaments, and the filling density of the hollow fiber reverse osmosis membrane is 8000-15000 m 2 /m 3 ；
The hollow fiber reverse osmosis membrane material is a cellulose acetate asymmetric reverse osmosis membrane or an aromatic polyamide composite reverse osmosis membrane;
the cellulose acetate asymmetric reverse osmosis membrane is prepared by a melt spinning-phase separation method;
the aromatic polyamide composite reverse osmosis membrane is prepared by an interfacial polymerization method;
the dense selective layer of the hollow fiber reverse osmosis membrane filaments is arranged on the outer surface of the membrane filaments.
The utility model also provides a reverse osmosis system with the external pressure type hollow fiber reverse osmosis membrane component, when the water production outlet 140 of the upper end cover 121 is open, the water production pipe of the upper end cover 121 is provided with a water production pump to form a reverse osmosis system with double ends producing water;
when the water production outlet 140 of the upper end cover 121 is closed, a reverse osmosis system with single end producing water is formed;
when the produced water outlet 140 of the upper end cover 121 is used as the feed inlet of the upper end cover 121, the feed pipe of the upper end cover 121 is provided with a water inlet pump to form an energy-saving reverse osmosis concentration system.
The above detailed description is provided for explaining the present invention, and is only a preferred embodiment of the present invention, but not for limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made by the present invention are within the scope of the present invention.
Claims (9)
1. An external pressure type hollow fiber reverse osmosis membrane component is characterized in that: the external pressure type hollow fiber reverse osmosis membrane module comprises: the pressure-resistant membrane shell comprises a pressure-resistant membrane shell, an upper end cover and a lower end cover, wherein the upper end cover and the lower end cover are connected with two ends of the pressure-resistant membrane shell; a hollow fiber reverse osmosis membrane cluster is arranged in the pressure-resistant membrane shell, and two ends of the hollow fiber reverse osmosis membrane cluster are respectively communicated with the inner cavity of the upper end cover and the inner cavity of the lower end cover;
the pressure-resistant membrane shell is spaced from the inner cavity of the upper end cover and the inner cavity of the lower end cover;
a stock solution inlet arranged towards the hollow fiber reverse osmosis membrane bundling direction is formed in the lower side wall of the pressure-resistant membrane shell, and a concentrated water outlet arranged back to the hollow fiber reverse osmosis membrane bundling direction is formed in the upper side wall of the pressure-resistant membrane shell;
and the upper end cover and the lower end cover are both provided with water production outlets.
2. The external pressure type hollow fiber reverse osmosis membrane module according to claim 1, wherein: the joints of the pressure-resistant membrane shell and the upper end cover and the lower end cover are respectively provided with an epoxy resin cementing layer, and the epoxy resin cementing layers form intervals among the pressure-resistant membrane shell, an inner cavity of the upper end cover and an inner cavity of the lower end cover;
the epoxy resin cementing layer is used for wrapping and fixing the end part of the hollow fiber reverse osmosis membrane cluster.
3. The external pressure type hollow fiber reverse osmosis membrane module according to claim 2, wherein: all be equipped with the spacing portion of inside salient on upper end cover, the lower end cover, spacing portion is used for upper and lower support epoxy cementing layer in order to prevent when reverse osmosis membrane subassembly high pressure operation that epoxy cementing layer from deviating from or hollow fiber reverse osmosis membrane tied in a bundle breaks.
4. The external pressure type hollow fiber reverse osmosis membrane module according to claim 3, wherein: the limiting part is an annular limiting ring.
5. The external pressure type hollow fiber reverse osmosis membrane module according to claim 1, wherein: the end part of the pressure-resistant membrane shell is provided with a first flange protruding towards the outer side of the circumference, the upper end cover and the lower end cover are provided with a second flange protruding towards the outer side of the circumference, and the first flange and the second flange are matched and connected and fastened through a hoop.
6. The external pressure type hollow fiber reverse osmosis membrane module according to claim 1, wherein: and the concentrated water outlet is provided with an exhaust port, the exhaust port is used for exhausting the shell side air of the reverse osmosis membrane module when low-pressure water is fed, and the exhaust port is in a closed state after being exhausted.
7. The external pressure type hollow fiber reverse osmosis membrane module according to claim 1, wherein: the pressure-resistant membrane shell, the upper end cover and the lower end cover are made of fiber reinforced plastics, and the pressure-resistant grade is 1000 PSI.
8. The external pressure type hollow fiber reverse osmosis membrane module according to claim 1, which is characterized in thatCharacterized in that: the hollow fiber reverse osmosis membrane cluster is formed by assembling a plurality of hollow fiber reverse osmosis membrane filaments, and the filling density of the hollow fiber reverse osmosis membrane is 8000-15000 m 2 /m 3 ；
The hollow fiber reverse osmosis membrane material is a cellulose acetate asymmetric reverse osmosis membrane or an aromatic polyamide composite reverse osmosis membrane;
the cellulose acetate asymmetric reverse osmosis membrane is prepared by a melt spinning-phase separation method;
the aromatic polyamide composite reverse osmosis membrane is prepared by an interfacial polymerization method;
the compact selective layer of the hollow fiber reverse osmosis membrane filaments is arranged on the outer surface of the membrane filaments.
9. A reverse osmosis system having the external pressure type hollow fiber reverse osmosis membrane module of claim 1, wherein: when the water production outlet of the upper end cover is open, a water production pump is arranged on the water production pipe of the upper end cover to form a reverse osmosis system with two ends producing water;
when the water production outlet of the upper end cover is closed, a reverse osmosis system with single end producing water is formed;
when the water outlet of the upper end cover is used as the feed inlet of the upper end cover, the feed pipe of the upper end cover is provided with a water inlet pump to form an energy-saving reverse osmosis concentration system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221652118.9U CN217909793U (en) | 2022-06-28 | 2022-06-28 | External pressure type hollow fiber reverse osmosis membrane assembly and reverse osmosis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221652118.9U CN217909793U (en) | 2022-06-28 | 2022-06-28 | External pressure type hollow fiber reverse osmosis membrane assembly and reverse osmosis system |
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| Publication Number | Publication Date |
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| CN217909793U true CN217909793U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221652118.9U Active CN217909793U (en) | 2022-06-28 | 2022-06-28 | External pressure type hollow fiber reverse osmosis membrane assembly and reverse osmosis system |
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| CN (1) | CN217909793U (en) |
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- 2022-06-28 CN CN202221652118.9U patent/CN217909793U/en active Active
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