CN204051456U - A kind of rolled membrane module - Google Patents
A kind of rolled membrane module Download PDFInfo
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- CN204051456U CN204051456U CN201420477562.0U CN201420477562U CN204051456U CN 204051456 U CN204051456 U CN 204051456U CN 201420477562 U CN201420477562 U CN 201420477562U CN 204051456 U CN204051456 U CN 204051456U
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Abstract
The utility model discloses a kind of rolled membrane module, comprise center water producing pipe, and be wrapped at least one group of water purification diaphragm group on the water producing pipe of center; Described water purification diaphragm group comprises one and produces water flow-guiding screen, two tabular filter membranes and a former water flow-guiding screen; Be former water flow passage between the inner surface of described two tabular filter membranes, for producing water flow passage between the outer surface of two tabular filter membranes; Described former water flow-guiding screen is arranged in former water flow passage; Described product water flow-guiding screen is arranged on and produces in water flow passage; The thickness of described former water flow-guiding screen is 0.18mm ~ 0.35mm.The utility model is keeping under the condition that condensed water minimum of computation flow velocity is identical with traditional scheme, and the Concentrate flow of this programme only has 1/1 to three/2nd of traditional scheme, and even less, namely water-saving result is remarkable; Condensed water minimum of computation flow velocity simultaneously owing to significantly affecting reverse osmosis membrane blocking does not decline, so the not easily plugging performance of reverse osmosis membrane also can keep well, even also can improve.
Description
Technical field
The utility model relates to a kind of rolled membrane module.
Background technology
A large amount of family expenses coiled reverse osmosis membrane used in the market, although its filtering accuracy is very high, figuratively, be exactly except hydrogen ion and hydroxide ion, other any ion nearly all can not penetrate, so be called pure water through the water outlet of reverse osmosis membrane filtration, if occupation mode is correct, usual service life is all very long, not easily blocks.One of not susceptible to plugging essential reason, be exactly that the water velocity of former current when reverse osmosis membrane surface is enough high, former water filters limit flowing in film Surface Edge, particle in water slips over reverse osmosis membrane surface along water (flow) direction, make at film surface deposition or to gather, so reverse osmosis membrane not easily blocks.So former water is a crucial operational factor at the tangential flow velocity on film surface.Due to former water at the tangential flow velocity of the reality on film surface with velocity field formal distribution, may be not identical everywhere strictly speaking, for the ease of problem analysis, we define the minimum of computation flow velocity V of a former water in the tangential flowing in film surface:
V＝Q/A，
In formula: V is the minimum of computation flow velocitys of current in the tangential flowing in film surface, and unit is m/s; Condensed water emission flow when Q is coiled reverse osmosis membrane operation, unit is m
3/ s; A is the cross-sectional area of the former water flow passage of coiled reverse osmosis membrane, and unit is m
2.
Can think that this flow velocity is equivalent to the characteristic value of former water at the tangential flow velocity of the reality on film surface, the size of actual water Flow Velocity can be reacted to a certain extent.To use the coiled reverse osmosis membrane assembly of maximum 50GPD in household reverse osmosis water purifier, the thickness of its former water flow-guiding screen is 0.7mm, and the length of former water flow passage is 305mm, and the width of former water flow passage is 820mm, condensed water emission flow during operation is 390mL/min, then have
Q＝390(mL/min)＝390×10
-6/60(m
3/S)＝65×10
-6(m
3/S)；
A＝0.7×10
-3×820×10
-3＝5.74×10
-4(m
2)；
V＝Q/A＝(65×10
-6)/(5.74×10
-4)＝1.132×10
-2(m/S)＝11.32(mm/S)。
Namely former water is 11.32mm/S at the minimum of computation flow velocity V of the tangential flowing in film surface, this ensures the not susceptible to plugging former water minimum of computation flow velocity in the tangential flowing in film surface when a large amount of family expenses 50GPD reverse osmosis membrane assembly used runs on the market at present, wherein the implication of 50GPD produces 50 gallons, water every day, be the flow producing water, also can be expressed as 130mL/min.
Although above-mentioned parameter is proved to be reliable for the stable operation of reverse osmosis membrane, the service life of reverse osmosis membrane is also long.But, Concentrate flow is 390mL/min, pure water flow is 130mL/min (implication of 50GPD), when namely running, the ratio of flow of pure water and condensed water is 1 to 3, and condensed water substantially as waste water discharged to sewer, former water use efficiency only has 25%, cause a large amount of water resource waste, this is difficult to accept, so urgently wish better technology in household water-purifying machine industry: the service life of neither significantly reducing reverse osmosis membrane, can reduce again the discharge capacity of condensed water significantly.
Another problem is, when reverse osmosis membrane assembly normally runs, in order to overcome osmotic pressure, the pressure of Yuan Shui side is usually all within the scope of 0.42MPa ~ 0.60MPa, namely hydraulic pressure is higher, and pressure is just thoroughly laid down by a choke valve (in the industry also referred to as waste water ratio) by such water under high pressure, and this part pressure energy is not utilized, the flow of row's condensed water is larger, and the pressure energy of waste is more.For industrial large reverse osmosis system, more advanced scheme by an energy recycle device by this part pressure energy recycling, but, in household water-purifying machine, the cost pressure increasing energy recycle device can not be born, so this part energy has just wasted.Although the quantity of single this part pressure energy of household reverse osmosis water purifier is little, but the quantity of household reverse osmosis water purifier is very huge, the household reverse osmosis water purifier that current China is using, the most conservative estimation is also more than 2,000 ten thousand, if single machine waste in a year 2 degree of electricity, the annual just waste 4,000 ten thousand degree in whole nation electricity, this is a very large waste.So the power saving of household reverse osmosis water purifier is also the large problem that can not ignore.
Utility model content
The purpose of this utility model be to provide a kind of water-saving result significantly, not easily block, the significant rolled membrane module of energy-saving effect, be particularly suitable for using in family expenses reverse osmosis water purifier, also can use in the occasion of similar applications.
The technical scheme realizing the utility model object is: a kind of rolled membrane module, comprises center water producing pipe, and is wrapped at least one group of water purification diaphragm group on the water producing pipe of center; Described water purification diaphragm group comprises one and produces water flow-guiding screen, two tabular filter membranes and a former water flow-guiding screen; Be former water flow passage between the inner surface of described two tabular filter membranes, for producing water flow passage between the outer surface of two tabular filter membranes; Described former water flow-guiding screen is arranged in former water flow passage; Described product water flow-guiding screen is arranged on and produces in water flow passage; Described center water producing pipe is provided with axial endoporus, and the tube wall of center water producing pipe is provided with the limbers of multiple its endoporus of connection; Endoporus one end of described center water producing pipe is closed, and the other end is provided with delivery port; The described product water flow passage often organized in water purification diaphragm group is all communicated with the limbers on the water producing pipe of center; The flow direction of described former water in water purification diaphragm group and the axis being parallel of center water producing pipe; The thickness of described former water flow-guiding screen is 0.18mm ~ 0.35mm.
The product water flow-guiding screen of described water purification diaphragm group or a part for product water flow passage are close to center water producing pipe; Described product water flow passage is rectangular after launching, and the maintenance that this rectangle is communicated with the limbers of center water producing pipe is unimpeded, and its excess-three limit is closed by adhesive bond.
Preferred technical scheme: two tabular filter membranes of described often group water purification diaphragm group are parallel with center water producing pipe and side near center water producing pipe is all closed by adhesive bond.
Another kind of preferred technical scheme: described two the tabular filter membranes often organizing water purification diaphragm group are forming near the bending of water producing pipe place, center by a long plate shape filter membrane.
The lateral surface of described water purification diaphragm group is wound with sealant tape.
The outside of described sealant tape is provided with sealing ring.
The tabular filter membrane of described water purification diaphragm group is reverse osmosis membrane or NF membrane or milipore filter.
The thickness of the former water flow-guiding screen of described water purification diaphragm group is 0.18mm ~ 0.22mm.
The length of the former water flow passage of described water purification diaphragm group is not more than 508mm, and preferred length is not more than 305mm.
Have employed technique scheme, the utility model has following beneficial effect: the thickness of (1) former water flow-guiding screen of the present utility model is 0.18mm ~ 0.35mm, only have 1/1 to three/2nd of traditional scheme, namely the cross-sectional area of the former water flow passage of the utility model scheme is 1/1 to three/2nd of traditional scheme, so keeping under the condition that condensed water minimum of computation flow velocity is identical with traditional scheme, the Concentrate flow of this programme only has 1/1 to three/2nd of traditional scheme, even less, namely water-saving result is remarkable; Condensed water minimum of computation flow velocity simultaneously owing to significantly affecting reverse osmosis membrane blocking does not decline, so the not easily plugging performance of reverse osmosis membrane also can keep well, even also can improve.
(2) Concentrate flow of the present utility model significantly declines, namely discharge the pressure energy of loss when high-pressure thick is shunk significantly to decline, and be usually all provided with special RO membrane pump in the inlet pipeline of reverse osmosis membrane, this pump characteristics is pressure increase can cause pump after water flow declines after, because the input power of pump is substantially constant, the pressure of such reverse osmosis membrane Yuan Shui side significantly will rise along with the remarkable decline of condensed water emission flow, it is exactly that the ability overcoming osmotic pressure rises that the pressure of reverse osmosis membrane Yuan Shui side significantly rises, the water flow of reverse osmosis membrane assembly will be caused significantly to rise, in fact this part water flow increased is exactly the result of pressure energy for increasing the water flow of reverse osmosis membrane assembly of recovery, just the water time processed can be reduced after water flow increases, namely the running time of special RO pump is reduced, namely significantly energy-conservation object is reached.
(3) length of the former water flow passage of water purification diaphragm group of the present utility model is not more than 508mm, preferred length is not more than 305mm, this length is the appropriate length of the rolled membrane module used in household water-purifying machine, the resistance that water flow produces in this length range, it is exactly the on-way resistance part during resistance to water-flow calculates, according to hydromechanical theory, this resistance is proportional to flow channel length, namely the longer then on-way resistance of flow channel length is larger, be limited in technical solutions of the utility model Central Plains water flow passage length and be not more than 508mm, so its on-way resistance caused can be thought within the acceptable range, so use in the equipment of the utility model rolled membrane module especial for family use water purifier or similar applications, and be not suitable for in industrially large reverse osmosis system.
(4) the remarkable difference of rolled membrane module of the present utility model and conventional domestic reverse osmosis membrane assembly is the thickness of former water flow passage or the thickness of former water flow-guiding screen, and other size can be accomplished identical with conventional domestic reverse osmosis membrane assembly, in other words, the pressure vessel for reverse osmosis can accomplished exactly and use in household reverse osmosis water purifiers a large amount of on the market is at present completely compatible in fitted position, it is also identical that pipeline connects requirement, so, be easy to promote the use of, thus for household reverse osmosis water purifier water saving, economize on electricity deal with problems technically.
(5) thickness of the former water flow passage of the utility model rolled membrane module or the thickness of former water flow-guiding screen are significantly less than traditional coiled membrane module, in other words, this improving one's methods is the method reducing material usage, namely reduce the method for manufacturing cost, and water saving and energy-conservation object can be reached by this improvement, so the meaning of this technological progress is very rare.
Accompanying drawing explanation
In order to make content of the present utility model more easily be clearly understood, below according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the structural representation of embodiment 1 of the present utility model.
The A place enlarged drawing of Fig. 2 to be Fig. 2 be Fig. 1.
Fig. 3 is that the structure of embodiment 1 of the present utility model is launched and pure water flows to schematic diagram.
Fig. 4 is that the structure of embodiment 1 of the present utility model is launched and former current direction schematic diagram.
Fig. 5 is the schematic appearance of embodiment 1 of the present utility model.
Fig. 6 is the structural representation of embodiment 2 of the present utility model.
Fig. 7 is the structural representation of embodiment 3 of the present utility model.
Fig. 8 is the structural representation of embodiment 4 of the present utility model.
Label in accompanying drawing is:
Water purification diaphragm group 1, product water flow-guiding screen 11, tabular filter membrane 12, former water flow-guiding screen 13, former water flow passage 14, product water flow passage 15, center water producing pipe 2, limbers 21, delivery port 22, pipe plug 23, binding agent 3, sealant tape 4, sealing ring 5.
Detailed description of the invention
(embodiment 1)
See Fig. 1 to Fig. 5, the rolled membrane module of the present embodiment, comprise center water producing pipe 2, and be wrapped in the water purification diaphragm group 1 on center water producing pipe 2.
Water purification diaphragm group 1 comprises one and produces water flow-guiding screen 11, two tabular filter membranes 12 and a former water flow-guiding screen 13.Between the inner surface of two tabular filter membranes 12 be former water flow passage 14, two tabular filter membranes 12 outer surface between for produce water flow passage 15.Former water flow-guiding screen 13 is arranged in former water flow passage 14.Produce water flow-guiding screen 11 to be arranged in product water flow passage 15.Center water producing pipe 2 is provided with axial endoporus, and the tube wall of center water producing pipe 2 is provided with the limbers 21 of multiple its endoporus of connection.Endoporus one end of center water producing pipe 2 is closed by pipe plug 23, and the other end is provided with delivery port 22.Product water flow passage 15 in water purification diaphragm group 1 is communicated with the limbers 21 on center water producing pipe 2.The flow direction of former water in water purification diaphragm group 1 and the axis being parallel of center water producing pipe 2.The thickness of former water flow-guiding screen 13 is 0.18mm ~ 0.35mm, is preferably 0.18mm ~ 0.22mm.The length of former water flow passage 14 is not more than 508mm, is preferably not more than 305mm.
The product water flow-guiding screen 11 of water purification diaphragm group 1 or a part for product water flow passage 15 are close to center water producing pipe 2.Producing water flow passage 15 launches rear rectangular, and the maintenance that this rectangle is communicated with the limbers 21 of center water producing pipe 2 is unimpeded, and its excess-three limit is bonded by binding agent 3 and closes.Two tabular filter membranes 12 of water purification diaphragm group 1 are parallel with center water producing pipe 2 and side near center water producing pipe bonds closed by binding agent 3.The lateral surface of water purification diaphragm group 1 is wound with sealant tape 4.The outside of sealant tape 4 is provided with sealing ring 5.The tabular filter membrane 12 of water purification diaphragm group 1 is reverse osmosis membrane or NF membrane or milipore filter.
The rolled membrane module of the present embodiment is owing to being reduced to 0.18mm ~ 0.35mm by the thickness of former water flow passage from 0.7mm, in flow one timing, can ensure to reduce flow when water velocity does not reduce thus obtain to reduce condensed water discharge and energy-conservation technique effect, meanwhile, also can along with the increase of former water flow resistance, thus, this programme is not suitable for for the long membrane module of former water flow passage, (the former water flow passage length of the rolled membrane module in industrial large reverse osmosis system can reach 5000mm to such as industrial large-scale rolled membrane module, 6000mm, because it can be connected in series several rolled membrane modules in a pressure vessel, the former water flow passage of such length must reduce resistance to water-flow as much as possible, namely former water flow passage thickness can not be too little).Therefore the length of former water flow passage 14 is limited in and is not more than 508mm by the utility model, preferably be not more than within the scope of 305mm, the appropriate length of the rolled membrane module that this length range uses in household water-purifying machine just, the Pressure Drop caused by resistance that water flow produces in this length range is very little, can accept completely in household machine, so this programme rolled film is only suitable for using in family expenses and similar applications water purifier.
The test situation of the rolled membrane module of the present embodiment is as follows:
Get the former water flow-guiding screen 13 that thickness is 0.20mm, the length of former water flow passage 14 is 305mm, and the width of former water flow passage 14 is 820mm, concentrated water discharge flow location 130mL/min during operation.The minimum of computation flow velocity V of former water in the tangential flowing in film surface is calculated by formula V=Q/A:
Q＝130(mL/min)＝130×10
-6/60(m
3/S)＝2.17×10
-6(m
3/S)；
A＝0.2×10
-3×820×10
-3＝1.64×10
-4(m
2)；
V＝Q/A＝(2.17×10
-6)/(1.64×10
-4)＝1.323×10
-2(m/S)＝13.23(mm/S)。
By above-mentioned coiled reverse osmosis membrane component assembling in the pipe-line system of traditional household reverse osmosis water purifier, start special 50GPD household reverse osmosis water purifier dedicated pump, pressurize to the Yuan Shui side of coiled reverse osmosis membrane assembly, and condensed water water flow is controlled at 130mL/min, at this moment pure water water flow reaches 200mL/min, and at accumulative pure water water yield 2m
3after, there is not remarkable decline in pure water water flow.
Above-mentioned result of the test is as follows compared with the example of background technology:
1. condensed water is reduced to 130mL/min from 390mL/min, illustrates that water saving significantly.
2. produce discharge and rise to 200mL/min from 130mL/min, illustrate that pure water water flow enlarges markedly, namely significantly can reduce the water time processed, energy-saving effect is remarkable.
3. former water rises to 13.23mm/S at the minimum of computation flow velocity V of the tangential flowing in film surface from 11.32mm/S, and the intensity that former water washes away reverse osmosis membrane surface is stronger, illustrates that reverse osmosis membrane more not easily blocks.Accumulative pure water water yield 2m
3after, there is not remarkable decline in pure water water flow, illustrates that result of the test conforms to beneficial effect.
(embodiment 2)
See Fig. 6, the present embodiment is substantially the same manner as Example 1, and difference is: two tabular filter membranes 12 of the water purification diaphragm group 1 in the present embodiment are being formed near center water producing pipe 2 bending by a long plate shape filter membrane.
(embodiment 3)
See Fig. 7, the present embodiment is substantially the same manner as Example 1, difference is: the present embodiment is provided with two groups of water purification diaphragm groups, and two the tabular films often organizing water purification diaphragm group are closed near the bonding of water producing pipe place, center, and what be close to center water producing pipe is produce water flow-guiding screen or produce water flow passage.The product water flow passage 15 often organized in water purification diaphragm group 1 is all communicated with the limbers 21 on center water producing pipe 2.Two the tabular filter membranes 12 often organizing water purification diaphragm group 1 are parallel with center water producing pipe 2 and side near center water producing pipe all bonds closed by binding agent 3.
The water purification diaphragm group of the present embodiment also can arrange more than two.
(embodiment 4)
See Fig. 8, the present embodiment is substantially the same manner as Example 3, and difference is: two the tabular filter membranes 12 often organizing water purification diaphragm group 1 are forming near the bending of center water producing pipe 2 place by a long plate shape filter membrane.
Above specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; be understood that; these are only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a rolled membrane module, is characterized in that: comprise center water producing pipe (2), and is wrapped at least one group of water purification diaphragm group (1) on center water producing pipe (2); Described water purification diaphragm group (1) comprises one and produces water flow-guiding screen (11), two tabular filter membranes (12) and a former water flow-guiding screen (13); Be former water flow passage (14) between the inner surface of described two tabular filter membranes (12), for producing water flow passage (15) between the outer surface of two tabular filter membranes (12); Described former water flow-guiding screen (13) is arranged in former water flow passage (14); Described product water flow-guiding screen (11) is arranged on produces in water flow passage (15); Described center water producing pipe (2) is provided with axial endoporus, and the tube wall of center water producing pipe (2) is provided with the limbers (21) of multiple its endoporus of connection; The endoporus one end at described center water producing pipe (2) is closed, and the other end is provided with delivery port (22); The described often product water flow passage (15) organized in water purification diaphragm group (1) is all communicated with the limbers (21) on center water producing pipe (2); The flow direction of described former water in water purification diaphragm group (1) and the axis being parallel of center water producing pipe (2); The thickness of described former water flow-guiding screen (13) is 0.18mm ~ 0.35mm.
2. a kind of rolled membrane module according to claim 1, is characterized in that: the product water flow-guiding screen (11) of described water purification diaphragm group (1) or a part for product water flow passage (15) are close to center water producing pipe (2); Described product water flow passage (15) is rectangular after launching, and the maintenance that this rectangle is communicated with the limbers (21) at center water producing pipe (2) is unimpeded, and its excess-three limit is closed by binding agent (3) bonding.
3. a kind of rolled membrane module according to claim 1, is characterized in that: two tabular filter membranes (12) of described often group water purification diaphragm group (1) are parallel with center water producing pipe (2) and side near center water producing pipe all bonds closed by binding agent (3).
4. a kind of rolled membrane module according to claim 1, is characterized in that: described two the tabular filter membranes (12) often organizing water purification diaphragm group (1) are forming near the bending of center water producing pipe (2) place by a long plate shape filter membrane.
5. a kind of rolled membrane module according to claim 1, is characterized in that: the lateral surface of described water purification diaphragm group (1) is wound with sealant tape (4).
6. a kind of rolled membrane module according to claim 5, is characterized in that: the outside of described sealant tape (4) is provided with sealing ring (5).
7. a kind of rolled membrane module according to claim 1, is characterized in that: the tabular filter membrane (12) of described water purification diaphragm group (1) is reverse osmosis membrane or NF membrane or milipore filter.
8. a kind of rolled membrane module according to claim 1, is characterized in that: the thickness of the former water flow-guiding screen (13) of described water purification diaphragm group (1) is 0.18mm ~ 0.22mm.
9. a kind of rolled membrane module according to claim 1, is characterized in that: the length of the former water flow passage (14) of described water purification diaphragm group (1) is not more than 508mm.
10. a kind of rolled membrane module according to claim 9, is characterized in that: the length of the former water flow passage (14) of described water purification diaphragm group (1) is not more than 305mm.
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|---|---|---|---|
| CN201420477562.0U CN204051456U (en) | 2014-08-22 | 2014-08-22 | A kind of rolled membrane module |
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|---|---|---|---|
| CN201420477562.0U CN204051456U (en) | 2014-08-22 | 2014-08-22 | A kind of rolled membrane module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138714A (en) * | 2014-08-22 | 2014-11-12 | 江苏正本净化节水科技实业有限公司 | Spiral-wound film component |
| CN106110893A (en) * | 2016-07-04 | 2016-11-16 | 佛山市麦克罗美的滤芯设备制造有限公司 | Water saving membrane component and filtration thereof |
| CN106925129A (en) * | 2015-12-29 | 2017-07-07 | 株式会社皮克布朗 | With the lateral flow type reverse osmosis membrane filt of one-piece type formation stream |
| CN108421415A (en) * | 2018-05-16 | 2018-08-21 | 南京帝膜净水材料开发有限公司 | A kind of wound membrane element |
| CN108654390A (en) * | 2018-05-16 | 2018-10-16 | 南京帝膜净水材料开发有限公司 | A kind of wound membrane element |
-
2014
- 2014-08-22 CN CN201420477562.0U patent/CN204051456U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138714A (en) * | 2014-08-22 | 2014-11-12 | 江苏正本净化节水科技实业有限公司 | Spiral-wound film component |
| CN106925129A (en) * | 2015-12-29 | 2017-07-07 | 株式会社皮克布朗 | With the lateral flow type reverse osmosis membrane filt of one-piece type formation stream |
| CN106110893A (en) * | 2016-07-04 | 2016-11-16 | 佛山市麦克罗美的滤芯设备制造有限公司 | Water saving membrane component and filtration thereof |
| CN108421415A (en) * | 2018-05-16 | 2018-08-21 | 南京帝膜净水材料开发有限公司 | A kind of wound membrane element |
| CN108654390A (en) * | 2018-05-16 | 2018-10-16 | 南京帝膜净水材料开发有限公司 | A kind of wound membrane element |
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