CN217868221U - Nanofiltration roll type membrane filter core - Google Patents
Nanofiltration roll type membrane filter core Download PDFInfo
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- CN217868221U CN217868221U CN202221348072.1U CN202221348072U CN217868221U CN 217868221 U CN217868221 U CN 217868221U CN 202221348072 U CN202221348072 U CN 202221348072U CN 217868221 U CN217868221 U CN 217868221U
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Abstract
A nanofiltration roll type membrane filter element comprises a shell and a membrane element arranged in the shell, wherein the shell is provided with a pure water outlet, a raw water inlet and a concentrated water outlet; one end of the long side of the membrane bag is provided with a water inlet opening, the wide side is provided with a water outlet opening, and the rest of the membrane bag is provided with a closed end; the water inlet separation net is arranged in the film bag, a plurality of rubber blocks are arranged in the water inlet separation net at intervals, and the rubber blocks are staggered with each other to enable the inner water flow to form a curved water flow channel. The raw water flow is prolonged, and the concentration polarization phenomenon is not easy to generate.
Description
Technical Field
The utility model relates to a water purification filter core especially relates to a nanofiltration filter core.
Background
Along with the improvement of living standard, the popularization of the water purifier is more and more extensive. The nanofiltration membrane is between reverse osmosis and ultrafiltration, the filtration precision reaches 0.001 micron, and silt, rust, heavy metal, calcium and magnesium ions and the like can be filtered. Scale can be filtered off and part of the minerals retained.
The formula membrane filter core that uses always at present adopts one end to advance raw water, and through the diaphragm filtration, the foraminiferous center tube is flowed into from the membrane bag to the pure water, and concentrated water flows out from the other end, and this structural style raw water flow is short, and the velocity of flow is low, easily produces concentration polarization phenomenon, and the easy scale deposit in membrane surface reduces film element life.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved in the utility model is to provide a long and difficult formula membrane filter core of receiving straining that produces concentration polarization phenomenon of former water flow to foretell technical current situation.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a nanofiltration roll type membrane filter element comprises a shell and a membrane element arranged in the shell, wherein the shell is provided with a pure water outlet, a raw water inlet and a concentrated water outlet, and the nanofiltration roll type membrane filter element is characterized in that the membrane element comprises a pure water outlet, a raw water inlet and a concentrated water outlet
The central tube is hollow in the axial direction, an opening at the upper end of the central tube is communicated with the pure water outlet, the bottom end of the central tube is closed, and a pure water hole is formed in the lateral direction of the central tube;
the membrane bag is wound on the central tube, the membrane bag is formed by laminating two membranes or folding the middle of one membrane, a water inlet opening is formed at one end of the long edge, a water outlet opening is formed at the wide edge, and the rest membranes form closed ends;
the water inlet separation net is arranged in the membrane bag, a plurality of rubber blocks are arranged in the water inlet separation net at intervals, and the rubber blocks are staggered with each other to enable the inner water flow to form a curved water flow channel; and
and the flow guide cloth is positioned on the outer side of the film bag and wound on the central pipe.
Furthermore, the rubber blocks are in a straight strip shape and are arranged in parallel, and the water flow channel is in a right-angle S shape.
Preferably, the shell comprises a lower shell and an upper cover arranged at the port of the lower shell, and the pure water outlet, the raw water inlet and the concentrated water outlet are formed in the upper cover.
Preferably, one end of the membrane element, which is close to the upper cover, is provided with a hollow water stop cover, correspondingly, the inner side of the upper cover is convexly provided with an inner barrel and an outer barrel which is positioned outside the inner barrel, the inner barrel extends into the port of the water stop cover and is provided with a water inlet gap for raw water to flow in, the pure water outlet is communicated with the inner barrel, the raw water inlet is communicated with the water inlet gap, the upper end of the central tube is in sealing fit with the inner barrel, the inner wall of the outer barrel is in sealing fit with the outer wall of the port of the water stop cover, a concentrated water area is formed between the side wall of the membrane element and the inner wall of the lower shell, and the concentrated water outlet is communicated with the concentrated water area.
Compared with the prior art, the utility model has the advantages of: raw water enters the filter element, and after the raw water is filtered by the curved water flowing channel for a long distance, the concentrated water flows out from the concentrated water outlet, and the pure water flows out from the side surface of the membrane, passes through the pure water hole, passes through the inner cavity of the central tube, and finally flows out from the pure water outlet. The raw water flow is prolonged, and the concentration polarization phenomenon is not easy to generate.
Drawings
FIG. 1 is a sectional view of an embodiment.
Fig. 2 is a schematic view of the membrane element in an expanded state.
Fig. 3 is a schematic view of a film bag.
FIG. 4 is a schematic view showing the direction of water flow in the film bag
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, the nanofiltration roll-type membrane filter element in the present embodiment includes a housing 1 and a membrane element disposed in the housing 1, the housing 1 in the present embodiment includes a lower shell 11 and an upper cover 12 disposed at an end of the lower shell 11, and a pure water outlet 14, a raw water inlet 15 and a concentrated water outlet 13 are formed on the upper cover 12.
One end of the membrane element 4 close to the upper cover 12 is provided with a hollow water stop cover 5, the inner side of the upper cover 12 is convexly provided with an inner barrel 16 and an outer barrel 17 positioned on the outer side of the inner barrel 16, the inner barrel 16 extends into the port of the water stop cover 5 and is provided with a water inlet gap 1a between the inner wall of the port of the water stop cover 5, the raw water flows in, a pure water outlet 14 is communicated with the inner barrel 16, a raw water inlet 15 is communicated with the water inlet gap 1a, the upper end of the central tube 3 is in sealing fit with the inner barrel 16, the inner wall of the outer barrel 17 is in sealing fit with the outer wall of the port of the water stop cover 5, a concentrated water area 1b is formed between the side wall of the membrane element 4 and the inner wall of the lower shell 11, and a concentrated water outlet 13 is communicated with the concentrated water area 1 b.
Referring to fig. 2 and 3, the membrane element 4 includes a central tube 3, a membrane bag 41, a water inlet separation net 42 and a flow guide cloth 43, the central tube 3 is hollow in the axial direction, the upper end opening is communicated with the pure water outlet 14, the bottom end is closed, and the central tube 3 is laterally formed with a pure water hole 31; the membrane bag 41 is wound on the central tube 3, the membrane bag 41 is formed by folding the middle of a membrane 411, a water inlet opening 1c is formed at one end of the long edge, a water outlet opening 1d is formed at the wide edge, and the rest parts form a closed end; the water inlet isolating net 42 is arranged in the membrane bag 41, and the water inlet isolating net 42 is in an interval thickening shape. A plurality of rubber blocks 44 are arranged in the water inlet isolation net 42 at intervals, and the rubber blocks 44 are staggered with each other to enable the inner water flow to form a curved water flow channel; the glue blocks 44 in this embodiment are straight and arranged parallel to each other, and the water flow channel is in a right-angled S-shape. The baffle cloth 43 is positioned closely outside the membrane bag 41 and is wound around the central tube 3.
Referring to fig. 1 and 4, raw water enters from the raw water inlet 15, passes through the water inlet gap 1a, enters the membrane element 4, passes through the water inlet opening 1c, and the right-angled S-shaped water passage of the water inlet separation net 42, and flows out from the water outlet opening 1d, enters the concentrated water area 1b, and finally flows out from the concentrated water outlet 13, while pure water flows out from the side of the membrane, passes through the pure water hole 31, passes through the inner cavity of the central tube 3, and finally flows out from the pure water outlet 14.
The rolling method of the nanofiltration roll-type membrane filter core comprises the following rolling steps: one end of the flow guide cloth is fixed on the central tube. And folding the nanofiltration membrane in half, placing a water inlet separation net on the inner side of the folded membrane, and placing the membrane bag embedded with the water inlet separation net on the pure water diversion cloth. Glue is applied to the two ends of the upper side and the lower side inside and outside the membrane bag, the glue applying direction is parallel to the rolling direction, glue is applied to the front surface of the membrane bag, and the glue applying direction is parallel to the direction of the central tube. Finally, the element is wound to form a membrane element. The length of the water inlet separation net is consistent with that of the folded diaphragm. The upper end of the front side of the membrane bag is glued and is left empty 3-5cm away from the central tube.
Claims (4)
1. A nanofiltration roll type membrane filter element comprises a shell (1) and a membrane element (4) arranged in the shell (1), wherein the shell (1) is provided with a pure water outlet (14), a raw water inlet (15) and a concentrated water outlet (13), and the nanofiltration roll type membrane filter element is characterized in that the membrane element (4) comprises
The central pipe (3) is hollow in the axial direction, an opening at the upper end of the central pipe is communicated with the pure water outlet (14), the bottom end of the central pipe is closed, and a pure water hole (31) is formed in the lateral direction of the central pipe (3);
the membrane bag (41) is wound on the central tube (3), the membrane bag (41) is formed by laminating two membranes (411) or folding the middle of one membrane (411), one end of the long side is provided with a water inlet opening (1 c), the wide side is provided with a water outlet opening (1 d), and the rest membranes form closed ends;
the water inlet separation net (42) is arranged in the membrane bag (41), a plurality of rubber blocks (44) are arranged in the water inlet separation net (42) at intervals, and the rubber blocks (44) are staggered with each other to enable the inner water flow to form a curved water flow channel; and
and a flow guide cloth which is positioned outside the film bag (41) and is wound on the central tube (3).
2. Nanofiltration roll-to-roll membrane filter according to claim 1, characterized in that the glue blocks (44) are straight and arranged parallel to each other, the water flow channels being right-angled S-shaped.
3. Nanofiltration roll membrane cartridge according to claim 1, characterized in that the housing (1) comprises a lower shell (11) and an upper cover (12) arranged at the end of the lower shell (11), and the pure water outlet (14), the raw water inlet (15) and the concentrated water outlet (13) are formed on the upper cover (12).
4. The nanofiltration roll-type membrane filter element according to claim 3, wherein one end of the membrane element (4) close to the upper cover (12) is provided with a hollow water stop cover (5), correspondingly, the inner side of the upper cover (12) is convexly provided with an inner cylinder (16) and an outer cylinder (17) positioned at the outer side of the inner cylinder (16), the inner cylinder (16) extends into the port of the water stop cover (5) and is provided with a water inlet gap (1 a) for raw water to flow in with the inner wall of the port of the water stop cover (5), the pure water outlet (14) is communicated with the inner cylinder (16), the raw water inlet (15) is communicated with the water inlet gap (1 a), the upper end of the central tube (3) is in sealing fit with the inner cylinder (16), the inner wall of the outer cylinder (17) is in sealing fit with the outer wall of the port of the water stop cover (5), a concentrated water region (1 b) is formed between the side wall of the membrane element (4) and the inner wall of the lower shell (11), and the concentrated water outlet (13) is communicated with the concentrated water region (1 b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221348072.1U CN217868221U (en) | 2022-05-26 | 2022-05-26 | Nanofiltration roll type membrane filter core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221348072.1U CN217868221U (en) | 2022-05-26 | 2022-05-26 | Nanofiltration roll type membrane filter core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217868221U true CN217868221U (en) | 2022-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221348072.1U Active CN217868221U (en) | 2022-05-26 | 2022-05-26 | Nanofiltration roll type membrane filter core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217868221U (en) |
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2022
- 2022-05-26 CN CN202221348072.1U patent/CN217868221U/en active Active
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