CN217340842U - Roll up membrane structure and filter element subassembly with antipollution ability - Google Patents
Roll up membrane structure and filter element subassembly with antipollution ability Download PDFInfo
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- CN217340842U CN217340842U CN202122627923.8U CN202122627923U CN217340842U CN 217340842 U CN217340842 U CN 217340842U CN 202122627923 U CN202122627923 U CN 202122627923U CN 217340842 U CN217340842 U CN 217340842U
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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
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- 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 relates to a filter element field discloses a roll membrane structure and filter element group spare with antipollution ability, it includes water production layer and water purification import intercommunication, the membrane body coupling is inner in the one end of intaking import, the inner sealing connection of first anti-infiltration membrane has third anti-infiltration membrane, the inner sealing connection of second anti-infiltration membrane has fourth anti-infiltration membrane, third anti-infiltration membrane and fourth anti-infiltration membrane extend to the middle zone of water production layer, the end sealing connection of third anti-infiltration membrane and fourth anti-infiltration membrane, the limit of third anti-infiltration membrane and the limit of first anti-infiltration membrane are sealed, the limit of fourth anti-infiltration membrane and second anti-infiltration membrane is sealed; the first reverse osmosis membrane, the third reverse osmosis membrane, the second reverse osmosis membrane and the fourth reverse osmosis membrane form an M-type structure, the membrane body forms a first raw water layer with a longer flow channel on the outer side and a second raw water layer formed by the third reverse osmosis membrane and the fourth reverse osmosis membrane, and raw water flows out of the central pipe and then enters the first raw water layer and the second raw water layer. The filter membrane of the scheme has the advantages of small energy loss, high filtering efficiency, pollution resistance, scaling resistance and the like.
Description
Technical Field
The utility model relates to a filter core field especially relates to a roll up membrane structure and filter element group spare with antipollution ability.
Background
In most current products, all only adopt a center tube, the membrane element winding forms membrane filter core subassembly on the center tube, and during the filtration, the raw water is intake from the filter core tip to along membrane filter core's axial displacement, in collecting the center tube with the pure water after filtering, dense water then flows from the other end of membrane filter core. The disadvantages of such membrane cartridges are: the method has the advantages of low inflow, short water making flow channel, short detention time of raw water in contact with the surface of the membrane element, unstable internal pressure, low desalination rate, incomplete utilization of the membrane element, unbalanced utilization area of the membrane element and the like.
For example, chinese patent CN201611242200.3 discloses a lateral flow type reverse osmosis filter, and its technical scheme is mainly equipped with raw water inlet, pure water delivery port and dense water delivery port on the shell, the center of filter is equipped with pure water passageway and dense water passageway, pure water passageway and dense water passageway communicate with pure water delivery port and dense water delivery port respectively, the membrane element twines and forms the reverse osmosis filter core in pure water passageway and dense water passageway appearance, forms the system water runner that the heliciform extends to the center between the adjacent two-layer membrane element, the end that the membrane element is located on the lateral wall of reverse osmosis filter core has formed the raw water import with system water runner intercommunication, form the raw water between the outside of reverse osmosis filter core and the inboard of shell and hold the chamber, the raw water import holds the chamber through the raw water and communicates with raw water inlet. Compare the scheme that raw water import is located reverse osmosis filter core center among the prior art, under the condition of equal original water pressure, this utility model's scheme can make the film element of bigger area obtain the high efficiency and utilize. And because the water production efficiency is high, the section flow velocity of the raw water on the surface of the membrane element is obviously improved, and the risk of surface fouling is reduced.
However, the side-flow reverse osmosis filter is still the same as the existing side-flow reverse osmosis membrane, and because the front end and the rear end of the filter have the same filtering section, the pressure loss of the inner end (front end) is still large, and the filter is easy to pollute due to insufficient flow velocity when entering the rear end. And the lateral flow reverse osmosis membrane body with the structure has the technical problems of short water making flow channel and the like.
SUMMERY OF THE UTILITY MODEL
The utility model discloses pressure loss is big among the prior art, and rear end velocity of flow causes the shortcoming of piling up the pollution slowly easily, provides a roll up membrane structure and filter element group spare with antipollution ability.
In order to solve the technical problem, the utility model discloses a following technical scheme can solve:
a rolling membrane structure with anti-pollution capacity comprises a membrane body, wherein the membrane body is flattened and at least comprises a first reverse osmosis membrane layer and a second reverse osmosis membrane on the outer sides, the edges of the first reverse osmosis membrane layer and the second reverse osmosis membrane are connected in a sealing mode, a bag-shaped space is formed inside the first reverse osmosis membrane layer and the second reverse osmosis membrane layer, the bag-shaped space is a water production layer, a raw water layer is arranged on the outer side of the membrane body, and raw water enters the water production layer after being filtered by the first reverse osmosis membrane layer or/and the second reverse osmosis membrane from the outer sides of the first reverse osmosis membrane layer or/and the second reverse osmosis membrane;
the membrane body is connected with one end of the purified water inlet as an inner end, the inner end of the first reverse osmosis membrane is connected with a third reverse osmosis membrane in a sealing way, the inner end of the second reverse osmosis membrane is connected with a fourth reverse osmosis membrane in a sealing way, the third reverse osmosis membrane and the fourth reverse osmosis membrane extend to the middle area of the water production layer, the end parts of the third reverse osmosis membrane and the fourth reverse osmosis membrane are connected in a sealing way, the edge part of the third reverse osmosis membrane is sealed with the edge part of the first reverse osmosis membrane, and the edge part of the fourth reverse osmosis membrane is sealed with the edge part of the second reverse osmosis membrane;
the first reverse osmosis membrane, the third reverse osmosis membrane, the second reverse osmosis membrane and the fourth reverse osmosis membrane form an M-shaped structure, a first raw water layer with a longer flow channel at the outer side and a second raw water layer formed by the third reverse osmosis membrane and the fourth reverse osmosis membrane are formed on the membrane body, and raw water flows out of the central pipe and then enters the first raw water layer and the second raw water layer.
Preferably, the axial dimensions of the first reverse osmosis membrane, the second reverse osmosis membrane, the third reverse osmosis membrane and the fourth reverse osmosis membrane are the same, the radial dimensions of the first reverse osmosis membrane and the second reverse osmosis membrane are the same, the radial lengths of the third reverse osmosis membrane and the fourth reverse osmosis membrane are the same and are 1/4-1/2 of the first reverse osmosis membrane, and the ratio is related to the characteristics of the membranes.
Preferably, the third reverse osmosis membrane is formed by bending the first reverse osmosis membrane, and the second fourth reverse osmosis membrane is formed by bending the second reverse osmosis membrane.
Preferably, the membrane body is wound around the central tube to form a spiral water-producing layer, and the outer surface of the membrane body is wound to form a spiral gap, which is a raw water layer.
Preferably, flow guide nets are arranged in the raw water layer and the water production layer.
The filter element assembly comprises a central tube, a first cavity and a second cavity which are mutually independent and extend along the axial direction of the central tube are arranged in the central tube, a raw water inlet and a raw water outlet are arranged on the first cavity, and a purified water inlet and a purified water outlet are arranged on the second cavity; the central tube is coated with the rolling membrane structure with the anti-pollution capacity; the raw water outlet is communicated with the raw water layer, and the purified water inlet is communicated with the water producing layer.
Preferably, the raw water outlet is arranged at the end of the second cavity, the raw water outlet and the central pipe are arranged coaxially, the purified water inlet is arranged on the side surface of the second cavity, and the central line of the purified water inlet is perpendicular to the axis of the central pipe.
Preferably, the purified water inlet is disposed at one end of the second chamber, and the raw water inlet is disposed on a side surface of the first chamber.
Through the technical scheme, the utility model discloses following technological effect has:
this scheme has designed a roll membrane structure with antipollution ability, and it is through designing roll membrane structure, makes the raw water have great area of contact when getting into the raw water layer to can reduce and lead to raw water and the diaphragm body and center tube lateral wall equipotential to cause loss of pressure because of the contact surface undersize, thereby improve the velocity of flow through reducing the membrane area with the raw water contact when reacing the rear end, guarantee to erode the effect, solved and rolled up the shortcoming that the membrane pollutes the scale deposit easily.
Drawings
Fig. 1 is a schematic view of the overall structure of a center pipe.
Fig. 2 is a schematic view of the internal structure of the center tube.
Fig. 3 is a schematic structural diagram of the membrane body.
FIG. 4 is a flow attenuation diagram of the same material and area of the membrane of the present embodiment and the conventional membrane under the operation condition of the whole laboratory machine.
The names of the parts indicated by the numerical references in the drawings are as follows: 1-membrane body, 2-first reverse osmosis membrane, 3-second reverse osmosis membrane, 4-third reverse osmosis membrane, 5-fourth reverse osmosis membrane, 6-raw water layer, 7-water production layer, 61-first raw water layer, 62-second raw water layer, 10-first cavity, 11-second cavity, 12-raw water inlet, 13-raw water outlet, 14-purified water inlet, 15-purified water outlet and 16-central tube.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
A rolling membrane structure with anti-scaling capability comprises a membrane body 1, wherein the membrane body 1 is flattened and at least comprises a first reverse osmosis membrane 2 layer and a second reverse osmosis membrane 3 on the outer sides, the first reverse osmosis membrane 2 layer and the second reverse osmosis membrane 3 are sealed through edges to form a water production layer 7 in the membrane body, a raw water layer 6 is arranged on the outer side of the membrane body 1, and raw water enters the water production layer 7 after being filtered by the first reverse osmosis membrane 2 layer or/and the second reverse osmosis membrane 3 from the outer sides of the first reverse osmosis membrane 2 layer or/and the second reverse osmosis membrane 3;
the water producing layer 7 is communicated with the purified water inlet 14, one end of the membrane body 1 connected with the water inlet is the inner end, the inner end of the first reverse osmosis membrane 2 is connected with a third reverse osmosis membrane 4 in a sealing mode, the inner end of the second reverse osmosis membrane 3 is connected with a fourth reverse osmosis membrane 5 in a sealing mode, the third reverse osmosis membrane 4 and the fourth reverse osmosis membrane 5 extend to the middle area of the water producing layer 7, the first reverse osmosis membrane 2, the third reverse osmosis membrane 4, the second reverse osmosis membrane 3 and the fourth reverse osmosis membrane 5 form an M-shaped structure, the membrane body 1 forms a first original water layer 61 with a longer flow channel on the outer side and a second original water layer 62 formed by the third reverse osmosis membrane and the fourth reverse osmosis membrane, and the original water flows out of a central pipe and then enters the first original water layer 61 and the second original water layer 62.
The first reverse osmosis membrane 2, the third reverse osmosis membrane 4, the second reverse osmosis membrane 3 and the fourth reverse osmosis membrane 5 form an M-shaped structure, a first turbulent flow zone 8 is formed between the third reverse osmosis membrane 4 and the first reverse osmosis membrane 2, a second turbulent flow zone 9 is formed between the second reverse osmosis membrane 3 and the fourth reverse osmosis membrane 5, and the first turbulent flow zone 8 and the second turbulent flow zone 9 are formed in the water production layer 7 and are communicated with the water production layer 7.
When raw water flows out from the raw water outlet and enters the raw water layer in the scheme, the front end is provided with the first raw water layer 61 and the second raw water layer 62, so that a larger membrane area can be obtained in the initial state of raw water, and the utilization rate of the front end membrane is higher. Meanwhile, most of the pressure of the raw water with the structure acts on the membrane, so that the pressure loss irrelevant to other factors is relatively reduced, the energy loss is low, and more energy is saved.
In this embodiment, the axial dimensions of the first reverse osmosis membrane 2, the second reverse osmosis membrane 3, the third reverse osmosis membrane 4 and the fourth reverse osmosis membrane 5 are the same, the radial dimensions of the first reverse osmosis membrane 2 and the second reverse osmosis membrane 3 are the same, the radial lengths of the third reverse osmosis membrane 4 and the fourth reverse osmosis membrane 5 are the same and are 1/4-1/2 of the first reverse osmosis membrane 2, wherein the specific proportional relationship is related to the adopted membrane material and the actual requirement, and the proportion designed in this embodiment is 1/2. That is, the raw water is "run off" the second raw water layer 62, and then only the first raw water layer 61 is used to produce water, and the membrane area is reduced 1/2, so that the flow rate at the rear end is increased compared to that at the front end. The water flow area that the front end of this kind of structure distributes promptly is 2 times of rear end, so this kind of structure has improved the velocity of flow of rear end, and the velocity of flow roughly improves 2 times, has improved the anti dirt capacity of diaphragm by a wide margin, has reduced the diaphragm pollution, has improved the life of diaphragm.
In this embodiment, in order to facilitate the formation of the third reverse osmosis membrane 4 and the fourth reverse osmosis membrane 5, the third reverse osmosis membrane 4 is formed by bending the first reverse osmosis membrane 2, and the second reverse osmosis membrane is formed by bending the second reverse osmosis membrane 3.
In this embodiment, the membrane body 1 is wound around the central tube 16 to form the spiral water producing layer 7, and the outer surface of the membrane body 1 is wound to form a spiral gap, which is the raw water layer 6. And flow guide nets are arranged in the raw water layer 6 and the water producing layer 7.
Example 2
The embodiment provides a filter element assembly, which comprises a central tube 16, wherein a first cavity 10 and a second cavity 11 which are mutually independent and axially extend along the central tube 16 are arranged in the central tube 16, a raw water inlet 12 and a raw water outlet 13 are arranged on the first cavity 10, and a purified water inlet 14 and a purified water outlet 15 are arranged on the second cavity 11; the central tube 16 was assembled with the rolled membrane structure of example 1; the raw water outlet 13 is communicated with the raw water layer 6, and the purified water inlet 14 is communicated with the water producing layer 7. In this embodiment, the raw water outlet 13 is disposed at an end of the second cavity 11, the raw water outlet 13 is disposed coaxially with the central tube 16, the water inlet is disposed at a side of the second cavity 11, and a central line of the water inlet is perpendicular to an axis of the central tube 16, the purified water inlet 14 is disposed at one end of the second cavity 11, and the raw water inlet 12 is disposed at a side of the first cavity 10.
Example 3
This embodiment is different from embodiment 1 in that: the raw water inlet 12 is spline-groove-shaped.
Claims (8)
1. A roll film structure with anti-pollution capability is characterized in that: the membrane comprises a membrane body (1), the membrane body (1) is flattened and at least comprises a first reverse osmosis membrane (2) layer and a second reverse osmosis membrane (3) on the outer side, the edges of the first reverse osmosis membrane (2) layer and the second reverse osmosis membrane (3) are hermetically connected, a bag-shaped space is formed on the inner side of the first reverse osmosis membrane (2) layer and the second reverse osmosis membrane (3), the bag-shaped space is a water production layer (7), a raw water layer (6) is arranged on the outer side of the membrane body (1), and raw water enters the water production layer (7) after being filtered by the first reverse osmosis membrane (2) layer or/and the second reverse osmosis membrane (3) from the outer side of the first reverse osmosis membrane (2) layer or/and the second reverse osmosis membrane (3);
the membrane body (1) is connected with one end of the purified water inlet (14) and is the inner end, the inner end of the first reverse osmosis membrane (2) is connected with a third reverse osmosis membrane (4) in a sealing mode, the inner end of the second reverse osmosis membrane (3) is connected with a fourth reverse osmosis membrane (5) in a sealing mode, the third reverse osmosis membrane (4) and the fourth reverse osmosis membrane (5) extend to the middle area of the water production layer (7), the end portions of the third reverse osmosis membrane (4) and the fourth reverse osmosis membrane (5) are connected in a sealing mode, the edge portion of the third reverse osmosis membrane (4) is sealed with the edge portion of the first reverse osmosis membrane (2), and the edge portions of the fourth reverse osmosis membrane (5) and the second reverse osmosis membrane (3) are sealed;
the first reverse osmosis membrane (2), the third reverse osmosis membrane (4), the second reverse osmosis membrane (3) and the fourth reverse osmosis membrane (5) form an M-shaped structure, the membrane body (1) forms a first raw water layer (61) with a longer flow channel on the outer side, and a second raw water layer (62) formed by the third reverse osmosis membrane and the fourth reverse osmosis membrane, and raw water enters the first raw water layer (61) and the second raw water layer (62) after flowing out from the central pipe.
2. The anti-contamination wrap film structure of claim 1, wherein: the axial dimensions of the first reverse osmosis membrane (2), the second reverse osmosis membrane (3), the third reverse osmosis membrane (4) and the fourth reverse osmosis membrane (5) are the same, the radial dimensions of the first reverse osmosis membrane (2) and the second reverse osmosis membrane (3) are the same, and the radial lengths of the third reverse osmosis membrane (4) and the fourth reverse osmosis membrane (5) are the same and are 1/3-1/2 of the first reverse osmosis membrane (2).
3. The anti-contamination wrap film structure of claim 1, wherein: the third reverse osmosis membrane (4) is formed by bending the first reverse osmosis membrane (2), and the second fourth reverse osmosis membrane is formed by bending the second reverse osmosis membrane (3).
4. The anti-contamination wrap film structure of claim 1, wherein: the membrane body (1) is wound on the central tube (16) to form a spiral water producing layer (7), and the outer side surface of the membrane body (1) forms a spiral gap due to winding, and the gap is a raw water layer (6).
5. The anti-contamination wrap film structure of claim 1, wherein: flow guide nets are arranged in the raw water layer (6) and the water production layer (7).
6. Filter element subassembly, its characterized in that: the device comprises a central tube (16), wherein a first cavity (10) and a second cavity (11) which are mutually independent and axially extend along the central tube (16) are arranged in the central tube (16), a raw water inlet (12) and a raw water outlet (13) are arranged on the first cavity (10), and a purified water inlet (14) and a purified water outlet (15) are arranged on the second cavity (11); a central tube (16) coated with a coiled membrane structure having anti-fouling capacity according to any one of claims 1 to 5; the raw water outlet (13) is communicated with the raw water layer (6), and the purified water inlet (14) is communicated with the water producing layer (7).
7. The filter element assembly according to claim 6, wherein: the raw water outlet (13) is arranged at the end part of the second cavity (11), the raw water outlet (13) and the central pipe (16) are coaxially arranged, and the purified water inlet (14) is arranged on the side surface of the second cavity (11) and the central line of the purified water inlet is vertical to the axis of the central pipe (16).
8. The filter element assembly according to claim 7, wherein: the purified water inlet (14) is arranged at one end of the second cavity (11), and the raw water inlet (12) is arranged on the side surface of the first cavity (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122627923.8U CN217340842U (en) | 2021-10-29 | 2021-10-29 | Roll up membrane structure and filter element subassembly with antipollution ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122627923.8U CN217340842U (en) | 2021-10-29 | 2021-10-29 | Roll up membrane structure and filter element subassembly with antipollution ability |
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| Publication Number | Publication Date |
|---|---|
| CN217340842U true CN217340842U (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122627923.8U Active CN217340842U (en) | 2021-10-29 | 2021-10-29 | Roll up membrane structure and filter element subassembly with antipollution ability |
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| CN (1) | CN217340842U (en) |
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2021
- 2021-10-29 CN CN202122627923.8U patent/CN217340842U/en active Active
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