CN104492268B - Rolling ro components and preparation method thereof - Google Patents
Rolling ro components and preparation method thereof Download PDFInfo
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- CN104492268B CN104492268B CN201410784688.7A CN201410784688A CN104492268B CN 104492268 B CN104492268 B CN 104492268B CN 201410784688 A CN201410784688 A CN 201410784688A CN 104492268 B CN104492268 B CN 104492268B
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- central canal
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Abstract
The invention provides a kind of rolling ro components, the diaphragm group being wound on described central canal including central canal and two or more；One end of described central canal is closed and is provided with multiple inlet opening on described central canal；The pure water outlet of described rolling ro components is positioned on the periphery of described rolling ro components, on the end face of the blind end that the dense water out of described rolling ro components is positioned at the close described central canal of described rolling ro components.The present invention also provides for the preparation method of a kind of above-mentioned rolling ro components.The dense water out of the rolling ro components of the present invention is positioned on the end face of close blind end of this rolling ro components, so its dense water out is only the portion end surface of ro components, and the outflow direction of dense water is inconsistent with water inlet direction, therefore water inlet flow velocity does not interferes with the flow rate of water flow on film surface, thus effectively reduce the pollution speed of reverse osmosis diaphragm, improve the service life of rolling ro components.
Description
Technical field
The present invention relates to water cleaning systems field, particularly relate to a kind of rolling ro components.
Background technology
Current coiled reverse osmosis membrane element is all by by water inlet flow-guiding screen, reverse osmosis diaphragm, pure water flow-guiding screen
The water purification diaphragm group that superposition is constituted is wound on the water producing pipe of center to be tightly connected and forms.Such as Fig. 1, its groundwork
Process is that former water enters from the end face of element, and along water inlet flow-guiding screen flowing, a part of former water is under stress
Formed through reverse osmosis membrane and produce water, be pooled to central canal along the flowing of pure water flow-guiding screen and collect pure water；Another portion
Former water is divided to flow out along water inlet flow-guiding screen from the other end of membrane component.The membrane component of this structure is due to film table
Surface current speed is little, and flow process is short, is relatively easily formed fouling membrane, thus shortens the membrane component life-span.
Number of patent application is 201020550655.3 to propose a kind of water distribution uniform coiled reverse osmosis membrane unit
Part, its central canal is positioned in water inlet flow channel and is distributed on body multiple inlet opening towards water inlet flow channel, and it is anti-
The infiltration sealed process of diaphragm has the dense water of connection water inlet flow channel to go out at coiled reverse osmosis membrane element circumferential surface
Mouthful, there is connection to produce the pure water outlet of water flow passage at coiled reverse osmosis membrane element at least end face, this water distribution is equal
Even coiled reverse osmosis membrane element can strengthen film surface water velocity, reduces the concentration polarization of film surface, reduces
The pollution speed of wound membrane element.But owing to its dense water out is the whole circumferential surface of membrane component, and dense water
Flow out direction consistent with water inlet direction, such that when water inlet flow velocity is certain, film surface velocity can be along
Concentrated stream outgoing direction successively decreases rapidly, thus increases the film surface contamination speed away from center pipe end, thus reduces
The membrane component life-span.
Summary of the invention
For the problem of the above-mentioned membrane component surface contamination away from center pipe end, it is an object of the invention to provide one
Plant new rolling ro components and preparation method thereof.
Technical scheme is as follows:
A kind of rolling ro components, is wound on the diaphragm on described central canal including central canal and two or more
Group；Each described diaphragm group includes into water flow-guiding screen, reverse osmosis diaphragm and pure water flow-guiding screen；Described reverse osmosis
Water inlet flow channel is formed, outside the described reverse osmosis diaphragm of adjacent two described diaphragm groups between the inner surface of diaphragm
Being formed between surface and produce water flow passage, described water inlet flow-guiding screen is arranged in described water inlet flow channel, and described pure water is led
Drift net is arranged in described product water flow passage；Pure water outlet, described water inlet flow channel it is provided with in described product water flow passage
On be provided with dense water out；
One end of described central canal is closed and is provided with multiple inlet opening on described central canal；
The outlet of described pure water is positioned on the periphery of described rolling ro components, described rolling ro components
Dense water out be positioned at described rolling ro components close described central canal blind end end face on.
Wherein in an embodiment, described dense water out is that be positioned at described water inlet flow channel with described central canal phase
On adjacent side.
Wherein in an embodiment, a length of described water inlet flow channel of described dense water out with described center
Manage adjacent side length 1/10 to 1/5.
Wherein in an embodiment, the first side adjacent with described central canal of described water inlet flow channel is complete
Closing, the second side adjacent with described central canal of described water inlet flow channel is partially enclosed, described second side
Untight part form described dense water out.
Wherein in an embodiment, two sides of described product water flow passage are closed, described product water flow passage with
The opposite side that described central canal is relative forms the outlet of described pure water.
Wherein in an embodiment, the inlet opening on described central canal is uniformly arranged.
Wherein in an embodiment, the non-homogeneous setting in inlet opening on described central canal, from described central canal
Open end to described central canal blind end direction on, the distance between adjacent two described inlet openings subtracts
Little.
Wherein in an embodiment, a diameter of 1mm～5mm of described inlet opening.
The present invention also provides for the preparation method of a kind of above-mentioned rolling ro components, in described preparation method
Encapsulation process comprises the steps:
S100: reverse osmosis diaphragm is folded to form water inlet flow channel, is placed on water inlet flow-guiding screen in water inlet flow channel；
S200: central canal is placed in water inlet flow channel the inlet opening alignment water inlet flow channel making central canal；
S300: the opposite side that the first side adjacent with central canal is relative with central canal is all carried out at sealing
Reason；
S400: the second side adjacent with central canal is carried out part encapsulation process, the length of unencapsulated part
Degree accounts for the 1/10 to 1/5 of the length of second side.
Wherein in an embodiment, described encapsulation process realizes by the way of adhesive plaster gluing.
The invention has the beneficial effects as follows: it is anti-that the dense water out of the rolling ro components of the present invention is positioned at this rolling
On the end face of the close blind end of osmotic component, so its dense water out is only the portion end surface of ro components,
And the outflow direction of dense water is inconsistent with water inlet direction, therefore water inlet flow velocity does not interferes with the current stream on film surface
Speed, thus effectively reduce the pollution speed of reverse osmosis diaphragm, improve the service life of rolling ro components.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of existing rolling ro components；
The overall schematic of one embodiment of the rolling ro components of Fig. 2 present invention；
Fig. 3 is the schematic diagram of another embodiment of existing rolling ro components；
Fig. 4 is the schematic cross-section of the rolling ro components shown in Fig. 2；
Fig. 5 is the coating schematic diagram of the rolling ro components shown in Fig. 2；
Fig. 6 is the overall schematic of another embodiment of the central canal of the rolling ro components in Fig. 2.
Detailed description of the invention
In order to the rolling ro components making the present invention and preparation method thereof purpose, technical scheme and advantage more
Add clear, below in conjunction with concrete drawings and the specific embodiments, the present invention is further elaborated.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment
Can be mutually combined.
Seeing Fig. 1, existing rolling ro components Central Plains water enters from one end of whole ro components, edge
Water inlet flow-guiding screen 30 to flow, a part of former water is formed through reverse osmosis membrane under pressure and produces water, produces water
Being collected in central canal 10 along pure water flow-guiding screen 20, wherein central canal 10 is water producing pipe, central canal 10
It is mainly used in collecting and produces water i.e. pure water；The former water of another part along water inlet flow-guiding screen from another of ro components
End face flows out.The water inlet direction of this ro components is consistent with concentrated water drainage outgoing direction, but due to runner width,
Flow process is short, and water inlet speed in runner is relatively slow, and film surface easily produces concentration polarization phenomenon, thus is easier to
Forming fouling membrane, the life-span of whole ro components is shorter.
In order to solve the generation of reverse osmosis membrane surface concentration polarization phenomenon as far as possible, the invention provides a kind of new
Rolling ro components, sees Fig. 2, the rolling ro components of the present invention, and it includes central canal 100 and two
It is wound on the diaphragm group 200 on described central canal 100 more than individual；One end 110 of described central canal 100 is closed,
And it is provided with multiple inlet opening 101 on described central canal 100；The pure water outlet of described rolling ro components
On 300 peripheries being positioned at described rolling ro components, the dense water out 400 of described rolling ro components
On the end face of the blind end 110 being positioned at the close described central canal 100 of described rolling ro components.
Rolling ro components in the present embodiment is wound on by diaphragm group 200 to be made on central canal 100.
Central canal 100 in the present embodiment is water inlet pipe, and one end 110 of central canal 100 is closed as shown in Figure 2,
The other end 120 is open, and former water enters from the open end 120 of central canal, by centrally disposed pipe 100
Inlet opening 101 enter the water inlet flow channel of rolling ro components.Due to former water enter after water inlet flow channel along
Diaphragm coiling direction flows, and the runner of the most whole membrane component narrows relatively, due to V=Q/ (L × T) (V
For former water flow velocity, Q is raw water flow, and L is water inlet flow channel length, and T is water inlet flow channel thickness), at former current
Former water flowing velocity in rolling ro components is improve, to a certain extent gram under conditions of amount is certain
Take the problem that film surface easily forms concentration polarization phenomenon.General, see Fig. 3, the reverse osmosis in Fig. 3
The dense water out of element be the whole circumferential surface of membrane component and concentrated stream outgoing direction consistent with water inlet direction, when
Water inlet flow velocity certain time, the flow velocity on film surface can successively decrease rapidly along concentrated stream outgoing direction, thus increase away from
The speed of the film surface contamination of central canal, and then reduce the membrane component life-span.One as this embodiment
Improve, the concentrated stream outgoing direction in the present embodiment and water inlet direction near normal, so can increase enriched water portion
The turbulent flow divided, thus avoid the pollution on the film surface away from central canal, thus improve membrane component on the whole
Life-span.Dense water out 400 in the present embodiment is positioned at the envelope of the close central canal 100 of rolling ro components
On the end face of closed end 110, so can increase the turbulent flow in dense water channel road, thus overcome to a certain extent
The generation of film surface concentration polarization phenomenon.In the present embodiment from improve former water flowing velocity and increase enriched water attached
Turbulent flow two aspect of near current goes out to send the generation of concentration polarization phenomenon reducing ro components surface, and two
Person's synergism can be tried one's best on the premise of not changing water flux and be reduced the possibility that concentration polarization phenomenon occurs
Property, thus improve the life-span of reverse osmosis membrane.
It is also preferred that the left as a kind of embodiment, see Fig. 4, the diaphragm group 200 in the present embodiment is by described
Diaphragm group is formed by flow-guiding screen 230 of intaking, reverse osmosis diaphragm 220 and pure water flow-guiding screen 210 superposition；Described instead
Water inlet flow channel 201 is formed between the inner surface (front) of infiltration diaphragm 220, described reverse osmosis diaphragm 220
Being formed between outer surface (reverse side) and produce water flow passage 202, described water inlet flow-guiding screen 230 is arranged on described feed water flow
In road 201, described pure water flow-guiding screen 210 is arranged in described product water flow passage 202, and pure water exports 300
In producing in water flow passage 202, dense water out 400 is positioned on water inlet flow channel 201.Dense water in the present embodiment goes out
Mouth 400 is positioned at the part of the close blind end 110 of side adjacent with central canal 100 on water inlet flow channel 201.
It should be noted that, the dense water out in the present embodiment can be provided only on a side, it is also possible to arrange
On two sides.From by the most different for the setting of dense water out, dense water out is arranged by the present embodiment
Making dense water different from former water flow direction in water inlet flow channel on the side of water inlet flow channel, it is on the one hand
The turbulent flow of dense water section can be increased, on the other hand can relatively improve water flux, it is to avoid away from water inlet end
There is concentration polarization phenomenon in reverse osmosis membrane surface.
It is also preferred that the left as a kind of embodiment, see Fig. 5, the inner surface 221 of reverse osmosis diaphragm 220 it
Between formed water inlet flow channel 201, the first side 2011 adjacent with described central canal 100 of this water inlet flow channel 201
Completely enclosed, the second side 2012 part envelope adjacent with described central canal 100 of described water inlet flow channel 201
Closing, the untight part of described second side 2012 forms described dense water out 400.On central canal 100
Multiple inlet openings 101 towards water inlet flow channel 201, former water enters water inlet flow channel from inlet opening 101 in spurting
In 110 so that water inlet uniformly, does not haves into water dead angle, thus avoids the scale formation of membrane surface.This
Dense water out in embodiment is provided only on a side of this rolling ro components, so manufactures and designs
Fairly simple.
It is also preferred that the left as a kind of embodiment, the dense water out 400 in the present embodiment a length of described
The 1/10 to 1/5 of the length of the side adjacent with described central canal 100 of water inlet flow channel 201.On the one hand in order to
Increase the turbulence level of dense aqua region, on the other hand in order to ensure flow velocity of intaking, think through experimental study, this reality
Execute a length of described water inlet flow channel 201 adjacent with described central canal 100 of dense water out 400 in example
The 1/10 to 1/5 of the length of side is optimal width.
It is also preferred that the left as another kind of embodiment, two sides of described product water flow passage 202 are closed, institute
The opposite side relative with described central canal stating product water flow passage 202 forms described pure water outlet 300.When diaphragm group
200 when being wound on central canal 100, and pure water outlet 300 is located on the periphery of this rolling ro components.
It is also preferred that the left as a kind of embodiment, see Fig. 5, the inlet opening 101 on central canal 100 is uniform
Arrange.So arrange and can ensure that water distribution is uniform, do not have into water dead angle.
As another kind of embodiment, seeing Fig. 6, the inlet opening 101 on described central canal 100 is non-homogeneous
Arrange, from the open end 120 of described central canal 100 to the direction of the blind end 110 of described central canal 100
On, the density of described inlet opening 101 increases；It is to say, the closer to blind end 110, adjacent inlet opening
Distance between 101 is the least.Owing to dense water out 400 is near blind end 110, in order to ensure near blind end
The water inlet flow velocity of this part, the density of the inlet opening that the present embodiment arranges this part is bigger, say, that this
The water inlet of part is the most, so can ensure that into water flow velocity, on the other hand can increase enriched water further
The turbulent flow of part.
It is also preferred that the left as a kind of embodiment, a diameter of 1mm to 5mm of inlet opening 101.So energy
Enough guarantee is intake with spurting entrance water inlet flow channel.
Accordingly, the present invention also provides for the preparation method of a kind of above-mentioned rolling ro components, this preparation method
Encapsulation process comprise the steps:
S100: the front of reverse osmosis diaphragm 220 is folded to form water inlet flow channel 201, will water inlet flow-guiding screen 230
It is placed in water inlet flow channel 201；
S200: central canal 100 is placed in and makes the inlet opening 101 of central canal 100 be directed in water inlet flow channel 201
Water inlet flow channel 201；Central canal 100 is placed in the free end of reverse osmosis diaphragm 220 by the present embodiment；
S300: as it is shown in figure 5, to the first side 2011 adjacent with central canal 100 and central canal 100
Relative opposite side 2013 all carries out encapsulation process；
S400: the second side 2012 adjacent with central canal is carried out part encapsulation process, unencapsulated part
Length account for second side length 1/10 to 1/5.This part unencapsulated is dense water out 400.Dense
The width of water out 400 can regulate according to actual needs.
It is also preferred that the left as a kind of embodiment, encapsulation process can realize by the way of adhesive plaster gluing.
As it is shown in figure 5, be provided with adhesive waterproof tape 500 at these positions.This adhesive waterproof tape 500 can be coated directly on into
On water filter, it is also possible to be first coated on the front 221 of reverse osmosis membrane 220, then place water inlet filter.
The rolling ro components of the present invention exports by rationally arranging dense water out and pure water, it is possible to effectively drop
The pollution speed of low reverse osmosis diaphragm, improves film service life.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with right
Requirement is as the criterion.
Claims (10)
1. a rolling ro components, it is characterised in that include central canal (100) and two or more volume
The diaphragm group (200) being wound on described central canal (100)；
Each described diaphragm group (200) includes leading into water flow-guiding screen (230), reverse osmosis diaphragm (220) and pure water
Drift net (210)；Water inlet flow channel (201) is formed between the inner surface (221) of described reverse osmosis diaphragm (220),
Formed between the outer surface of the described reverse osmosis diaphragm (220) of adjacent two described diaphragm groups (200) and produce water
Runner (202), described water inlet flow-guiding screen (230) is arranged in described water inlet flow channel (201), described pure
Water flow-guiding screen (210) is arranged in described product water flow passage (202)；Described product water flow passage (202) is upper to be arranged
There is pure water to export (300), described water inlet flow channel (201) is provided with dense water out (400)；
One end of described central canal (100) is closed and is provided with multiple inlet opening on described central canal (100)
(101)；
Described pure water outlet (300) is positioned on the periphery of described rolling ro components, described rolling reverse osmosis
The dense water out (400) of element is positioned at the close described central canal (100) of described rolling ro components thoroughly
Blind end (110) end face on.
Rolling ro components the most according to claim 1, it is characterised in that described dense water out (400)
It is positioned on the side adjacent with described central canal (100) of described water inlet flow channel (201).
Rolling ro components the most according to claim 2, it is characterised in that described dense water out (400)
A length of described water inlet flow channel (201) the side adjacent with described central canal (100) length 1/10
To 1/5.
Rolling ro components the most according to claim 2, it is characterised in that described water inlet flow channel (201)
The first side (2011) adjacent with described central canal (100) completely enclose, described water inlet flow channel (201)
The second side (2012) adjacent with described central canal (100) partially enclosed, described second side (2012)
Untight part form described dense water out (400).
Rolling ro components the most according to claim 2, it is characterised in that described product water flow passage (202)
Two sides close, the opposite side shape relative with described central canal (100) of described product water flow passage (202)
Described pure water is become to export (300).
6. according to the rolling ro components described in claim 1 to 5 any one, it is characterised in that institute
The inlet opening (101) stated on central canal (100) is uniformly arranged.
7. according to the rolling ro components described in claim 1 to 5 any one, it is characterised in that institute
State inlet opening (101) the non-homogeneous setting on central canal (100), from the opening of described central canal (100)
On the direction of end (120) the extremely blind end (110) of described central canal (100), adjacent two described water inlets
Distance between hole (101) reduces.
Rolling ro components the most according to claim 1, it is characterised in that described inlet opening (101)
A diameter of 1mm～5mm.
9. a preparation method for the rolling ro components described in claim 1 to 8 any one, it is special
Levying and be, the encapsulation process in described preparation method comprises the steps:
S100: reverse osmosis diaphragm (220) is folded to form water inlet flow channel (201), will water inlet flow-guiding screen (230)
It is placed in water inlet flow channel (201)；
S200: central canal (100) is placed in the inlet opening making central canal (100) in water inlet flow channel (201)
(101) described water inlet flow channel (201) it is directed at；
S300: to the first side (2011) adjacent with described central canal (100) and described central canal (100)
Relative opposite side (2013) all carries out encapsulation process；
S400: the second side (2012) adjacent with described central canal (100) is carried out part encapsulation process,
The length of unencapsulated part accounts for the 1/10 to 1/5 of the length of described second side (2012).
Preparation method the most according to claim 9, it is characterised in that described encapsulation process passes through glue
The mode of cloth gluing realizes.
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| CN201410784688.7A CN104492268B (en) | 2014-12-16 | 2014-12-16 | Rolling ro components and preparation method thereof |
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| CN201410784688.7A CN104492268B (en) | 2014-12-16 | 2014-12-16 | Rolling ro components and preparation method thereof |
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| CN104492268B true CN104492268B (en) | 2016-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821298A (en) * | 2019-03-21 | 2019-05-31 | 浙江沁园水处理科技有限公司 | A kind of production method of RO membrane filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106693712A (en) * | 2015-11-16 | 2017-05-24 | 艾欧史密斯（南京）水处理产品有限公司 | Membrane element |
| CN105268319B (en) * | 2015-12-01 | 2017-09-29 | 深圳加仑膜技术有限公司 | External spiral multipage reverse osmosis membrane |
| CN107158954A (en) * | 2017-05-04 | 2017-09-15 | 广东韦博科技有限公司 | A kind of rolled membrane module |
| CN108404670B (en) * | 2018-04-02 | 2020-05-29 | 深圳安吉尔饮水产业集团有限公司 | Reverse osmosis membrane element and water purification equipment with same |
| CN112403275B (en) * | 2019-08-20 | 2022-05-20 | 佛山市顺德区美的饮水机制造有限公司 | Method for manufacturing reverse osmosis membrane element |
| CN110508138B (en) * | 2019-09-20 | 2021-06-01 | 珠海格力电器股份有限公司 | Method for manufacturing roll type reverse osmosis membrane element |
| CN110694481B (en) * | 2019-10-08 | 2022-01-11 | 佛山市麦克罗美的滤芯设备制造有限公司 | Method for manufacturing reverse osmosis membrane element |
| CN110975629B (en) * | 2019-12-13 | 2022-03-04 | 浙江津膜环境科技有限公司 | Design method of universal industrial reverse osmosis membrane element product |
| CN115253692B (en) * | 2022-06-22 | 2023-12-01 | 沃顿科技股份有限公司 | Membrane element, production method of membrane element and rolled membrane assembly |
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| CN101934198A (en) * | 2010-10-07 | 2011-01-05 | 艾欧史密斯（上海）水处理产品有限公司 | Coiling type reverse osmosis membrane element with even water distribution |
| CN103394287A (en) * | 2013-08-24 | 2013-11-20 | 赵东旭 | Spiral wound type reverse osmosis membrane and method for cleaning same |
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