CN207324517U - A kind of filter membrane and its membrane component - Google Patents
A kind of filter membrane and its membrane component Download PDFInfo
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- CN207324517U CN207324517U CN201720912098.7U CN201720912098U CN207324517U CN 207324517 U CN207324517 U CN 207324517U CN 201720912098 U CN201720912098 U CN 201720912098U CN 207324517 U CN207324517 U CN 207324517U
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Abstract
The utility model discloses a kind of filter membrane and its membrane component, wherein, the filter membrane has the raw water side of input raw water and exports the pure water side of pure water；The filter membrane includes：Membrane body；By raw water filtration when the membrane body is passed through by raw water；It is arranged on the membrane body and refuses salt structure；The salt structure of refusing can prevent salt ion from passing through the filter membrane.Filter membrane and its membrane component provided by the utility model avoid the reduction of pure water water quality in the case where water purifier cuts off the water state.
Description
Technical field
It the utility model is related to water purification field, more particularly to a kind of filter membrane and its membrane component.
Background technology
Existing water purification machine is the machine for carrying out water process using principle of reverse osmosis by reverse osmosis membrane.Wherein, it is reverse osmosis
The operation principle of film is to apply certain pressure to water, makes hydrone by reverse osmosis membrane, and the overwhelming majority being dissolved in water
Inorganic salts (including heavy metal), organic matter and bacterium, virus etc. can not pass through reverse osmosis membrane so that the pure water penetrated and
The condensed water (also referred to as waste water) that can not penetrate is stringent to be separated.It is any due to being practically free of in the pure water of water purification machine discharge
Other materials, so that, the pure water that water purification machine is made is fresher, much cleaner, safer relative to bottled water.
Needing during water processed to apply water certain pressure in view of reverse osmosis membrane could be by reverse osmosis membrane, usually
Booster pump is equipped with water purification machine, is pressurizeed by booster pump to water, guarantee effect in the hydraulic pressure of reverse osmosis film surface so that
Water passes through reverse osmosis membrane Pure-water Making.
But find to shut down (water not processed) after a period of time in water purification machine in actual use, just arranged during start
It is higher to go out the TDS (Total dissolved solids, dissolvability solid amount) of pure water, salt ionic concentration especially therein compared with
Height, influences water quality.
Utility model content
Study and find by inventor, although the raw water before reverse osmosis membrane under shutdown status is not pressurized or is in
Inactive state, still, the soluble solid such as salt ion in raw water before reverse osmosis membrane can by the effect of free migration by
Step penetrate through reverse osmosis membrane reach reverse osmosis membrane film after pure water side.With the extension of downtime, free permeation is through instead
The amount that permeable membrane enters the soluble solids such as the salt ion of pure water side gradually increases so that the pure water side after film accumulates to form part
The higher liquid of TDS contents, so that the pure water TDS contents discharged when causing just to start shooting are higher, water quality is poor.
In view of above-mentioned technical problem, the utility model provides a kind of filter membrane, and the filter membrane has the original of input raw water
Water side and the pure water side for exporting pure water；The filter membrane includes：
Membrane body；By raw water filtration when the membrane body is passed through by raw water；
It is arranged on the membrane body and refuses salt structure；The salt structure of refusing can prevent salt ion from passing through the filtering
Film.
Preferably, the salt structure of refusing includes that predetermined value can be less than in the pressure difference of the raw water side and pure water side both sides
When prevent the hydrophobic structure that passes through of water.
Preferably, the hydrophobic structure can be higher than predetermined value in the pressure difference in the raw water side and pure water side both sides
When pass water through the filter membrane.
Preferably, the hydrophobic structure includes hydrophobic layer.
Preferably, the membrane body have mutually back to raw water surface and pure water surface；The membrane body raw water from
By raw water filtration during the raw water surface flow to the pure water surface；
The hydrophobic layer is arranged on the pure water surface and/or the raw water surface.
Preferably, the membrane body includes separating layer, bottom membrane and the branch between the separating layer and bottom membrane
Support layer；The separating layer back to the surface of the supporting layer be the raw water surface；The bottom membrane is back to the supporting layer
Surface is the pure water surface.
Preferably, the hydrophobic layer is included coated in the hydrophobic coating on the pure water surface.
Preferably, the hydrophobic layer includes the hydrophobic membrane being arranged on the pure water surface.
Preferably, the hydrophobic membrane is PTFE film.
Preferably, the filter membrane is additionally provided with the water guide grid outside the raw water surface.
Preferably, the membrane body is reverse osmosis membrane or NF membrane.
A kind of membrane component, including：
Collector pipe；
As above the filter membrane described in any embodiment；The filter membrane is wound in a spiral on the collector pipe.
Filter membrane provided by the utility model is in the case where water purifier cuts off the water state, due to there is the presence for refusing salt structure, filtering
Salt ion in the raw water of film raw water side can not free permeation to pure water side, so that the salt ionic concentration of pure water side will not be caused to increase
Greatly, the water quality of discharge pure water during start is ensured.
With reference to following explanation and attached drawing, the particular implementation of the utility model is disclose in detail, specifies this practicality
New principle can be in a manner of adopted.It should be understood that the embodiment of the utility model is not subject to thus in scope
Limitation.In the range of the spirit and terms of appended claims, the embodiment of the utility model includes many changes, modifications
With it is equivalent.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
Used in a other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously
It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those skilled in the art, without having to pay creative labor,
Other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the filtering membrane structure diagram that a kind of embodiment of the utility model is provided；
Fig. 2 is the filtering membrane structure diagram that the utility model another embodiment is provided.
Embodiment
It is in order to make those skilled in the art better understand the technical solutions in the application, real below in conjunction with the application
The attached drawing in example is applied, the technical solution in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.It is common based on the embodiment in the application, this area
Technical staff's all other embodiments obtained on the premise of creative work is not made, it is new should all to belong to this practicality
The scope of type protection.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model
The normally understood implication of technical staff in domain is identical.It is simply in the term used in the description of the utility model herein
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" bag
Include the arbitrary and all combination of one or more relevant Listed Items.
Please refer to Fig.1, Fig. 2, the filter membrane 100 provided by two embodiments of the utility model.Wherein, the filtering
Film 100 has the raw water side of input raw water and exports the pure water side of pure water.The filter membrane 100 includes：Membrane body 10；It is described
By raw water filtration when membrane body 10 is passed through by raw water；It is arranged on the membrane body 10 and refuses salt structure 20；It is described to refuse salt structure
20 can prevent salt ion from passing through the filter membrane 100.
It should be noted that whether raw water and pure water are according to by 100 filtration, purification of filter membrane in this embodiment
Division.Specifically：Raw water is not considered as by 100 filtration, purification of filter membrane.Wherein, raw water is similarly 100 upstream of filter membrane
Water, whether the raw water by the purification of other filter assemblies (such as membrane component positioned at 100 upstream of filter membrane) with having been had no directly
Association.Correspondingly, raw water forms pure water after by 100 filtration, purification of filter membrane, which is the filter membrane 100 in pure water side
Production water.
The filter membrane 100 can form filter core by winding when in use, and filter core is usually cylinder, and is contained in a shell
Membrane component is formed in vivo.As shown in Figure 1, 2, the filter membrane 100 is on a collector pipe 40.Use 100 water purification of filter membrane
When, raw water (pure water part therein) from the flowing of raw water lateral pure water side, therebetween through membrane body 10, refuse salt structure 20, wherein,
Impurity in raw water stops in membrane body 10, is filtered under suction-operated, and forms pure water in pure water side, until being flowed into down
One filter assemblies or entrance water end (W.E.).
In the case where water purifier cuts off the water state, due to there is a presence for refusing salt structure 20, the salt in the raw water of 100 raw water side of filter membrane
Ion can not free permeation to pure water side, so that the salt ionic concentration of pure water side will not be caused to increase, ensure to discharge during start pure
The water quality of water.
Specifically, the filter membrane 100 can be flexible membrane, membrane component is formed so as to be wrapped.In general, tiled state
Under 100 rectangular shaped of filter membrane, since a side screw winding formed a hollow cylinder.The filter membrane 100 is also set
There is the water guide grid 30 positioned at the raw water side.The filter membrane 100 can be effluent film.Water guide grid 30 is located at raw water side, is
The flowing of raw water forms water conservancy diversion, until forming condensed water.
Filter membrane 100 can produce waste water in water processed, can not also produce waste water.For example filter membrane 100 is microfiltration membranes
When, do not produce waste water when the micro-filtration membrane element formed using the filter membrane 100 carries out water purification filter.It is in the filter membrane 100
When NF membrane or reverse osmosis membrane (RO films) or ultrafiltration membrane, when the membrane component formed using the filter membrane 100 carries out water purification filter
Waste water can be produced (also as condensed water).
Continue from the preceding paragraph description, the membrane body 10 undertakes the primarily or entirely filtering function of whole filter membrane 100.The film sheet
Body 10 can be microfiltration membranes, ultrafiltration membrane, NF membrane or reverse osmosis membrane etc..Salt structure 20 is refused by being equipped with membrane body 10,
So as to prevent salt ion from infiltrating into pure water side under shutdown status, the water quality of pure water side is influenced.
Under general water purifier shutdown status, closed, the water inlet of water purifier with water end (W.E.) taps (generally tap)
Valve is closed, so that opposite closed environment is formed in water purifier, at this time, the liquid of (raw water side and pure water side) before and after filter membrane 100
Body remains static.The filter membrane 100 is by equipped with refusing salt structure 20, by preventing the salt ion under the conditions of this through described
Filter membrane 100 reaches pure water side, avoids salt ion from being accumulated in pure water side, so as to improve water quality.In view of the point, in an embodiment party
In formula, refusing salt structure 20 can prevent salt ion from penetrating through the filter membrane 100 under hydrostatic condition.
Continue from the preceding paragraph description, membrane body 10 is the main filtration part of whole filter membrane 100, when raw water passes through membrane body 10
Filtered.Certainly, Partial filtration function can also be undertaken by refusing salt structure 20.But for membrane body 10, refuse salt structure 20
Filtering function it is weaker.In addition, filtering function can not also be undertaken by refusing salt structure 20.
Specifically, the membrane body 10 have mutually back to raw water surface 11 and pure water surface 12；The membrane body 10
When raw water flows to the pure water surface 12 from the raw water surface 11 by raw water filtration.Further, the membrane body 10
Including separating layer, bottom membrane and the supporting layer between the separating layer and bottom membrane；The separating layer is back to the branch
The surface (separating layer outer surface) for supportting layer is the raw water surface 11；Surface (counterdie of the bottom membrane back to the supporting layer
Layer outer surface) it is the pure water surface 12.
In one embodiment, it is contemplated that salt ion can be using water as carrier when permeating, this, which refuses salt structure 20, to include
The hydrophobic structure 20 that water can be prevented to pass through when the pressure difference of the raw water side and pure water side both sides is less than predetermined value.This is hydrophobic
Structure 20 has hydrophobicity, so that water can not infiltrate hydrophobic structure 20 under its non-pressurized condition, and then can not pass through hydrophobic structure
20。
Correspondingly, since water can not be by the hydrophobic structure 20, so that its internal salt ion equally can not be by avoiding
The problem of pure water side salt ionic concentration is excessive.In addition, other nuisances in raw water can be prevented at the same time using hydrophobic structure 20
Matter, such as bacterium, organic matter etc. pass through filter membrane 100, effectively prevent the TDS rise problems of pure water side in the case of shutting down.
In a feasible embodiment, it is contemplated that 100 both sides of filter membrane have no pressure difference or pressure difference very under shutdown status
Small, the ion concentration at this time in the produced pure water in pure water side is much lower compared to the ion concentration in the raw water of raw water side, so that
The pure water of pure water side is based on penetration theory in this case, may infiltrate into the big side of ion concentration (raw water side),
The pure water in turn resulting in pure water side is reduced, and ion concentration gradually increases.Based on such a consideration, the filter membrane in this embodiment
100 can include membrane body 10 and the hydrophobic structure 20 being arranged on membrane body 10.The hydrophobic structure 20 can be in raw water side
Water is prevented to pass through when being less than predetermined value with the pressure difference of pure water side both sides.
As described above, the work that the salt ion of raw water side passes through free permeation with water can not only be prevented using hydrophobic structure 20
With pure water side is entered, increase the ion concentration of pure water side, moreover it is possible to the effect for preventing the water (molecule) of pure water side from passing through free permeation
Into the ion concentration of raw water side, further increase pure water side.In addition, it can also prevent solvable in addition to salt ion in raw water
Property solid also infiltrates into pure water side, is further ensured that the water quality of pure water side pure water is not affected.
In the present embodiment, the hydrophobicity of the hydrophobic structure 20 and the passability of water are not repelled.It is understood that
In the case of with the hydrophobic structure 20, water needs infiltration to advance in process of osmosis, and (shape is shut down in the supply of no external pressure
Under state), water, since infiltration difficulty is big, the hydrophobic structure can not be passed through by the pressure of itself when infiltrating into hydrophobic structure 20
20, and then water coke slurry passage can not be formed, salt ion by carrier of water so that also can not enter pure water side.Therefore, the hydrophobic knot
Structure 20 is gives the resistance that salt ion or hydrone pass through at both sides pressure difference smaller (being less than predetermined value), so as to prevent salt ion
Through the filter membrane 100.Correspondingly, to ensure normal water processed, the hydrophobic structure 20 can the raw water side with
The pressure difference of pure water side both sides passes water through the filter membrane 100 when being higher than predetermined value.
Hydrophobic structure 20 can be that 10 self structure of membrane body is formed, and can also be different component with membrane body 10.One
In feasible embodiment, hydrophobic structure 20 can be the micro-nano structure with hydrophobic performance that 10 1 surface of membrane body is set.
At this time, refuse salt structure 20 to be formed on the surface of membrane body 10, specifically, the micro-nano structure can be on the surface of membrane body 10
The raised fine structure of intensive cilium shape (cilium-like), so as to form hydrophobicity.Wherein, the 20 direct structure of hydrophobic structure
Build on the surface of membrane body 10.
In a specific embodiment, the hydrophobic structure 20 includes hydrophobic layer 20.It is film sheet that the hydrophobic layer 20, which is not,
Body 10 itself formation.The hydrophobic layer 20 is superimposed together to form filter membrane 100 with membrane body 10.Wherein, which can be with
It is identical with the shape of the membrane body 10, such as, when membrane body 10 is rectangular shape, which can also be rectangular shape.
In the present embodiment, hydrophobic layer 20 be arranged at membrane body 10 position have it is a variety of, for example, as shown in Figure 1, institute
Stating hydrophobic layer 20 can be arranged on the pure water surface 12, at this time, have two film sheets 10, two film sheets between the filter membrane
The raw water surface 11 of body 10 is facing, is intake tunnel (influent side) between two raw water surfaces 11, and set in the intake tunnel
There is water guide grid, hydrophobic layer 20 is arranged at pure water surface 12, back to intake tunnel side, correspondingly, the outside (back of the body of hydrophobic layer 20
To the side of membrane body) formed filter membrane 100 pure water side.
In addition in the embodiment illustrated in fig. 2, the hydrophobic layer 20 is arranged on the raw water surface 11.In the reality
Apply in mode, which has two membrane bodies 10, and the raw water surface 11 of two membrane bodies 10 is facing, two raw waters
A hydrophobic layer 20 is each provided with surface 11, is intake tunnel (influent side) between two hydrophobic layers 20, two and in the water inlet
Passage is equipped with water guide grid.Certainly, in other implementations, which can also be arranged at raw water surface 11 at the same time
And pure water surface 12.
Specifically, hydrophobic layer 20, which is arranged at raw water surface 11 and/or the set-up mode on pure water surface 12, has a variety of, example
Such as, hydrophobic layer 20 can be fixed by boundary position by the mode and membrane body 10 such as being bonded, suturing, in addition, hydrophobic layer 20 can
10 side of membrane body is arranged at fitting, after filter membrane 100 is wound, hydrophobic layer 20 is opposite with the position of membrane body 10 solid
It is fixed.
Hydrophobic layer 20 has a variety of different embodiments, and in one embodiment, the hydrophobic layer 20 includes being coated in
Hydrophobic coating on the pure water surface 12.Coating by being directly painted on the pure water surface 12 of membrane body 10 by the hydrophobic coating
And/or on raw water surface 11.Coating can be liquid state or powdered, and the table of base material (membrane body 10) is attached to by spraying or applying
Face, curing molding form hydrophobic layer 20.
In another preferred embodiment, as shown in Figure 1 and Figure 2, the hydrophobic layer 20 can include being arranged at the bottom
Hydrophobic membrane in film layer outer surface (pure water surface 12).The hydrophobic membrane can be directly attached on pure water surface 12.Specifically, institute
It is PTFE film to state hydrophobic membrane.Certainly, which can also be arranged at the raw water surface 11 of membrane body 10, so as to be located in water guide
Between grid 30 and raw water surface 11.
A kind of embodiment of the utility model also provides a kind of membrane component, which includes：Collector pipe 40；As above it is any
Filter membrane 100 described in embodiment；The filter membrane 100 is wound in a spiral on the collector pipe 40.Wherein, on collector pipe 40
Equipped with inlet opening, which can communicate with the pure water side of filter membrane 100, so as to be collected to pure water.In the embodiment party
Filter membrane 100 in formula may be referred to structure, shape, construction and the function of the filter membrane 100 in the above embodiment, this
Place no longer repeats one by one.
Herein cited any digital value all include between lower limit to upper limit value with the lower value of an incremented and
The all values of upper value, there are the interval of at least two units between any lower value and any much higher value.For example, such as
Fruit elaborates that the quantity of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20
To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification
68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, it is 0.0001,0.001,0.01,0.1 suitably to think a unit.
These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to
Combination is all expressly set forth in the specification in a similar manner.
Unless otherwise indicated, all scopes all include all numerals between endpoint and endpoint.It is used together with scope
" about " or " approximation " be suitable for two endpoints of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about
30 ", including at least the endpoint indicated.
All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot
Together in this.Identified element, component, component or step and reality should be included by describing the term " substantially by ... form " of combination
Other elements, component, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or
" comprising " describes the combination of element here, component, component or step it is also contemplated that substantially by these elements, component, component
Or the embodiment that step is formed.Here by using term " can with ", it is intended to it is described any to illustrate that " can with " includes
Attribute is all optional.
Multiple element, component, component or step can be provided by single integrated component, component, component or step.It is alternative
Ground, single integrated component, component, component or step can be divided into separated multiple element, component, component or step.It is used for
The open "a" or "an" for describing element, component, component or step is not said to exclude other elements, component, component
Or step.
It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch
State, many embodiments and many applications outside the example provided all will be aobvious and easy for a person skilled in the art
See.Therefore, the scope of this teaching should not be determined with reference to foregoing description, but should with reference to appended claims and this
The four corner of the equivalent that a little claims are possessed determines.It is for comprehensive purpose, all articles and special with reference to including
The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims
Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed
A part for utility model theme.
Claims (12)
1. a kind of filter membrane, it is characterised in that the filter membrane has the raw water side of input raw water and exports the pure water of pure water
Side；The filter membrane includes：
Membrane body；By raw water filtration when the membrane body is passed through by raw water；
It is arranged on the membrane body and refuses salt structure；The salt structure of refusing can prevent salt ion from passing through the filter membrane.
2. filter membrane as claimed in claim 1, it is characterised in that：It is described refuse salt structure include can the raw water side with it is described
The hydrophobic structure for preventing water to pass through when the pressure difference of pure water side both sides is less than predetermined value.
3. filter membrane as claimed in claim 2, it is characterised in that：The hydrophobic structure can the raw water side with it is described pure
The pressure difference of water side both sides passes water through the filter membrane when being higher than predetermined value.
4. filter membrane as claimed in claim 3, it is characterised in that：The hydrophobic structure includes hydrophobic layer.
5. filter membrane as claimed in claim 4, it is characterised in that：The membrane body have mutually back to raw water surface and pure
Water surface；The membrane body is when raw water is from the raw water surface flow to the pure water surface by raw water filtration；
The hydrophobic layer is arranged on the pure water surface and/or the raw water surface.
6. filter membrane as claimed in claim 5, it is characterised in that：The membrane body includes separating layer, bottom membrane and is located at
Supporting layer between the separating layer and bottom membrane；The separating layer back to the surface of the supporting layer be the raw water surface；
The bottom membrane back to the surface of the supporting layer be the pure water surface.
7. the filter membrane as described in claim 5 or 6, it is characterised in that：The hydrophobic layer includes being coated in the pure water surface
On hydrophobic coating.
8. filter membrane as claimed in claim 6, it is characterised in that：The hydrophobic layer includes being arranged on the pure water surface
Hydrophobic membrane.
9. filter membrane as claimed in claim 8, it is characterised in that：The hydrophobic membrane is PTFE film.
10. filter membrane as claimed in claim 1, it is characterised in that：The filter membrane is additionally provided with leading positioned at the raw water side
Water grid.
11. filter membrane as claimed in claim 10, it is characterised in that：The membrane body is reverse osmosis membrane or NF membrane.
A kind of 12. membrane component, it is characterised in that including：
Collector pipe；
Filter membrane as described in one of claim 1-11；The filter membrane is wound in a spiral on the collector pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720912098.7U CN207324517U (en) | 2017-07-25 | 2017-07-25 | A kind of filter membrane and its membrane component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720912098.7U CN207324517U (en) | 2017-07-25 | 2017-07-25 | A kind of filter membrane and its membrane component |
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| CN207324517U true CN207324517U (en) | 2018-05-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012206A (en) * | 2018-10-30 | 2018-12-18 | 杭州老板电器股份有限公司 | filter core and water purifier |
| CN109731543A (en) * | 2019-01-15 | 2019-05-10 | 清华大学 | A kind of composite material nanometer fiber and its preparation and application |
-
2017
- 2017-07-25 CN CN201720912098.7U patent/CN207324517U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109012206A (en) * | 2018-10-30 | 2018-12-18 | 杭州老板电器股份有限公司 | filter core and water purifier |
| CN109012206B (en) * | 2018-10-30 | 2024-04-09 | 杭州老板电器股份有限公司 | Filter element and water purifier |
| CN109731543A (en) * | 2019-01-15 | 2019-05-10 | 清华大学 | A kind of composite material nanometer fiber and its preparation and application |
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