CN110508146A - Reverse osmosis membrane filter element and water purifier - Google Patents
Reverse osmosis membrane filter element and water purifier Download PDFInfo
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- CN110508146A CN110508146A CN201910895184.5A CN201910895184A CN110508146A CN 110508146 A CN110508146 A CN 110508146A CN 201910895184 A CN201910895184 A CN 201910895184A CN 110508146 A CN110508146 A CN 110508146A
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- reverse osmosis
- osmosis membrane
- water inlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/06—Tubular membrane modules
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
Abstract
The invention discloses a kind of reverse osmosis membrane filter element and water purifiers；The reverse osmosis membrane filter element includes: central tube；And reverse osmosis membrane group, the reverse osmosis membrane group is coated on the outer wall of the central tube, the reverse osmosis membrane group is formed with concentrated water outlet, original water inlet, pure water outlet, water inlet flow channel and pure water runner, the original water inlet is connected to the water inlet of the water inlet flow channel, the outlet of the water inlet flow channel and the concentrated water outlet, the reverse osmosis membrane group includes reverse osmosis membrane, the reverse osmosis membrane is set between the water inlet flow channel and the pure water runner for filtering raw water, and the pure water outlet is exported relative to the concentrated water closer to the original water inlet.The reverse osmosis membrane filter element can improve the concentrated water side concentration polarization phenomenon of reverse osmosis membrane, promote the service life of reverse osmosis filter core；Water purifier includes above-mentioned reverse osmosis membrane, and therefore, which has the advantages of long service life.
Description
Technical field
The present invention relates to purifier technical fields, more particularly to a kind of reverse osmosis membrane filter element and water purifier.
Background technique
Reverse osmosis membrane group be by water inlet filter, reverse osmosis membrane, pure water flow-guiding cloth on the water producing pipe of center the company of sealing
It connects.During water processed, raw water enters from an end face of reverse osmosis membrane group, wherein effect of a part of raw water in pressure
The lower back side through diaphragm forms pure water, and pure water collects via central tube from one or both ends along pure water flow-guiding cloth to flow out, separately
A part of raw water is flowed out along water inlet filter from the other end of membrane component, it is generally the case that the flow of final concentrated water end discharge
The generally 20-70% of raw water flow of inlet water.
However, traditional reverse osmosis membrane group is when in use, gradually due to flow of the raw water water inlet on runner extending direction
It reduces, film surface flow velocity reduces, process is short, the concentrated water side concentration polarization phenomenon aggravation of reverse osmosis membrane, the reverse osmosis membrane group service life
Shorten.
Summary of the invention
Based on this, for the problem that the conventional reverse osmosis film group service life is short, a kind of reverse osmosis membrane filter element and water purifier are proposed；
The reverse osmosis membrane filter element can improve the concentrated water side concentration polarization phenomenon of reverse osmosis membrane, and promote reverse osmosis filter core uses the longevity
Life；Water purifier includes above-mentioned reverse osmosis membrane, and therefore, which has the advantages of long service life.
Specific technical solution is as follows:
On the one hand, this application involves a kind of reverse osmosis membrane filter elements, comprising: central tube；And reverse osmosis membrane group, it is described reverse osmosis
Film group is coated on the outer wall of the central tube, the reverse osmosis membrane group be formed with concentrated water outlet, original water inlet, pure water outlet, into
Water flow passage and pure water runner, the original water inlet are connected to the water inlet of the water inlet flow channel, the outlet of the water inlet flow channel with
The concentrated water outlet, the reverse osmosis membrane group includes reverse osmosis membrane, and the reverse osmosis membrane is set to the feed water flow
For filtering raw water between road and the pure water runner, the pure water outlet is connected to the water outlet of the pure water runner, described
Pure water outlet is exported relative to the concentrated water closer to the original water inlet.
Above-mentioned reverse osmosis membrane filter element is delivered to water inlet flow channel by original water inlet when in use, by raw water to be clean, into
In water flow passage raw water by reverse osmosis membrane filter, filtered pure water by along pure water runner be delivered to pure water outlet be discharged into
And realize the purification to raw water, purified concentrated water is delivered to concentrated water outlet discharge along water inlet flow channel；Further, in purification water making
In the process, the flow due to raw water on the flow direction along water inlet flow channel gradually decreases, and raw water constantly filters in water inlet flow channel
Concentration, since the pure water outlet is exported relative to the concentrated water closer to the original water inlet, water quality is relatively preferable, feed water flow
Film surface osmotic pressure on road extending direction at the original water inlet is smaller, by setting pure water outlet close to original water inlet
Meter, film surface back pressure is smaller, and flow passage resistance force of waterproof is smaller at original water inlet, and filtered pure water can rapidly flow to pure water and go out
Mouthful；According to formula: pressure-film surface osmotic pressure-film surface back pressure before film surface effective pressure=film, it is known that, one timing of pressure before film,
Larger in the film surface effective pressure at the original water inlet, the film surface pressure loss is small, and water efficiency processed is higher, due to concentrated water outlet with
The water outlet of water inlet flow channel is connected to, and concentrated water outlet is located at the end of water inlet flow channel, and flow passage resistance force of waterproof is maximum, close to concentrated water exit
Film surface back pressure is larger, and film surface effective pressure is smaller, and water processed is relatively inefficient, and film surface load mitigates, and then can mitigate close
The concentration polarization in concentrated water exit improves reverse osmosis membrane filter element antifouling property；As it can be seen that by by the pure water outlet relative to
The concentrated water outlet can promote processed water efficiency of the water inlet flow channel at original water inlet, reduce closer to the original water inlet
Film surface load of the water inlet flow channel close to concentrated water exit improves concentration polarization, promotes the service life of reverse osmosis membrane filter element.
In one of the embodiments, the permeable membrane element be located at the width direction of the original water inlet sectional area it is small
Sectional area on the length direction that the permeable membrane element is located at the water inlet flow channel.
The width of the original water inlet is less than the length of the water inlet flow channel in one of the embodiments,.
The water inlet flow channel extends along the longitudinal direction of the reverse osmosis membrane in one of the embodiments, described pure
Water flow passage extends along the longitudinal direction of the reverse osmosis membrane.
In one of the embodiments, the runner extending direction of the water inlet flow channel it is vertical with the axis of the central tube or
Close to vertically.
The reverse osmosis membrane includes folding part in one of the embodiments, and the reverse osmosis membrane is along the folding
Portion folds.
The reverse osmosis membrane further includes first seal and second seal, the reverse osmosis in one of the embodiments,
Permeable membrane group includes at least two layers reverse osmosis membrane, and the reverse osmosis membrane further includes opposite with the folding part first opening
Mouth end and the second open end being set between first open end and the folding part, the end shape of second open end
At there is opening, the first seal part seals or is fully sealed the opening and folds with being located in the reverse osmosis membrane
The side wall of inside limits to form the water inlet flow channel, is formed between the two neighboring reverse osmosis membrane along the reverse osmosis membrane
The gap that the longitudinal direction of piece extends, the second seal part seal the gap and are located at institute with the reverse osmosis membrane
The side wall on the inside of gap is stated to limit to form pure water runner.
The first seal part sealing opening and the first seal and institute in one of the embodiments,
It states reverse osmosis membrane and is located at the side wall of the opening and limit to form the original water inlet, the concentrated water outlet is set to described first
Open end, the relatively described folding part in the first open end closer to the central tube, the two neighboring reverse osmosis membrane
Two folding part intervals are arranged to form the pure water outlet, and the pure water outlet is exported relative to the concentrated water closer to institute
State original water inlet.
Two of the two neighboring reverse osmosis membrane folding part intervals are arranged to be formed in one of the embodiments,
The pure water outlet, the concentrated water outlet are set to first open end, and the folding part offers the original water inlet, institute
The relatively described folding part in the first open end is stated closer to the central tube, the pure water outlet is more leaned on relative to concentrated water outlet
The nearly original water inlet.
The reverse osmosis membrane further includes third sealing element in one of the embodiments, is located in one of the folding
The original water inlet in portion includes the first outer edge, and the original water inlet positioned at another adjacent folding part includes the
Two outer edges, the gap between first outer edge and second outer edge are sealed by the third sealing element.
The side wall of the second seal and the opening, which limits, in one of the embodiments, to form the pure water and goes out
Mouthful, the folding part offers the original water inlet, and the concentrated water outlet is set to first open end, the folding part phase
To first open end closer to the central tube, the circumferential side wall of the central tube offers water inlet, the water inlet
It is connected to the original water inlet, the pure water outlet is exported relative to the concentrated water closer to the original water inlet.
The reverse osmosis membrane further includes water inlet pipe in one of the embodiments, and the original water inlet passes through the water inlet
Pipe is connected to supply equipment.
The reverse osmosis membrane filter element further includes into water filter in one of the embodiments, and the water inlet filter is set to institute
It states in water inlet flow channel for guiding water flow.
The reverse osmosis membrane filter element further includes conducting element in one of the embodiments, and the conducting element is set to described pure
For guiding water flow in water flow passage.
On the other hand, the application further relates to a kind of water purifier, including the reverse osmosis membrane filter element in any of the above-described embodiment.
Above-mentioned water purifier is delivered to water inlet flow channel, water inlet flow channel by original water inlet when in use, by raw water to be clean
Middle raw water is filtered by reverse osmosis membrane, and filtered pure water is realized by being delivered to and then pure water outlet is discharged along pure water runner
Purification to raw water, purified concentrated water are delivered to concentrated water outlet discharge along water inlet flow channel；Further, in purification water making process
In, since flow of the raw water on the flow direction along water inlet flow channel gradually decreases, the continuous filtering and concentrating of raw water in water inlet flow channel,
Since the pure water outlet is exported relative to the concentrated water closer to the original water inlet, water quality is relatively preferable, and water inlet flow channel prolongs
The film surface osmotic pressure stretched on direction at the original water inlet is smaller, by the way that pure water outlet is designed close to original water inlet, film
Face back pressure is smaller, and flow passage resistance force of waterproof is smaller at original water inlet, and filtered pure water can rapidly flow to pure water outlet；According to
Formula: pressure-film surface osmotic pressure-film surface back pressure before film surface effective pressure=film, it is known that, one timing of pressure before film, close
Film surface effective pressure at original water inlet is larger, and the film surface pressure loss is small, and water efficiency processed is higher；Due to concentrated water outlet and feed water flow
The water outlet in road is connected to, and concentrated water outlet is located at the end of water inlet flow channel, and flow passage resistance force of waterproof is maximum, and the film surface close to concentrated water exit is carried on the back
Press larger, film surface effective pressure is smaller, and water processed is relatively inefficient, and film surface load mitigates, and then can mitigate and go out close to concentrated water
Concentration polarization at mouthful improves reverse osmosis membrane filter element antifouling property；As it can be seen that by by the pure water outlet relative to described dense
Water out can promote processed water efficiency of the water inlet flow channel at original water inlet closer to the original water inlet, reduce feed water flow
Film surface load of the road close to concentrated water exit improves concentration polarization, promotes the service life of reverse osmosis membrane filter element, and then is promoted net
The service life of water dispenser and water processed.
Detailed description of the invention
Fig. 1 is the expanded schematic diagram of wherein reverse osmosis membrane group in an embodiment；
Fig. 2 is the expanded schematic diagram of reverse osmosis membrane group in another embodiment；
Fig. 3 is the expanded schematic diagram of reverse osmosis membrane group in another embodiment；
Fig. 4 is the expanded schematic diagram of reverse osmosis membrane group in another embodiment；
Fig. 5 is the dimension mark figure of reverse osmosis membrane group.
Description of symbols:
10, reverse osmosis membrane filter element；100, central tube；200, reverse osmosis membrane；210, original water inlet；220, pure water outlet；
230, folding part；240, the first open end；250, concentrated water exports；300, raw water water inlet direction；400, pure water flow direction；500,
Concentrated water flow direction；600, water inlet pipe.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, below in conjunction with attached drawing and specific embodiment party
Formula, the present invention is further described in detail.It should be understood that the specific embodiments described herein are only to solve
The present invention is released, and the scope of protection of the present invention is not limited.
It should be noted that it can directly on the other element when element is referred to as " being set to " another element
Or there may also be elements placed in the middle.When element is referred to as " being fixedly arranged on " another element, it can be directly in another yuan
On part or there may also be elements placed in the middle.When an element is considered as " connection " another element, it be can be directly
It is connected to another element or may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ",
"left", "right" and similar statement for illustrative purposes only, are not meant to be the only embodiment.
It is important to point out that when element is referred to as " being fixedly arranged on " another element, two elements can be it is integrated,
It can be and be detachably connected between two elements.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
Body embodiment purpose, it is not intended that in limitation the present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
In addition it is also necessary to understand, in the present embodiment, term "lower", "upper", "front", "rear", "left", "right",
"inner", "outside", "top", "bottom", " side ", " other side ", " one end ", " other end ", etc. indicated by positional relationship be based on
Positional relationship shown in the drawings；The terms such as " first ", " second " are to distinguish different structure members.These terms are only
Convenient for the description present invention and simplify description, is not considered as limiting the invention.
As shown in Figures 1 to 4, one of embodiment reverse osmosis membrane filter element 10, comprising: central tube 100；And it is reverse osmosis
Film group, reverse osmosis membrane group are coated on the outer wall of central tube 100, reverse osmosis membrane group be formed with concentrated water outlet 250, original water inlet 210,
Water inlet flow channel and pure water runner, original water inlet 210 are connected to the water inlet of water inlet flow channel, and the outlet of water inlet flow channel and concentrated water export
250 connections, reverse osmosis membrane group includes reverse osmosis membrane 200, and reverse osmosis membrane 200 is set between water inlet flow channel and pure water runner
For filtering raw water, pure water outlet 220 is connected to the water outlet of pure water runner, and pure water outlet 220 exports 250 more relative to concentrated water
Close to original water inlet 210.
Above-mentioned reverse osmosis membrane filter element 10 is delivered to feed water flow by original water inlet 210 when in use, by raw water to be clean
Road, raw water is filtered by reverse osmosis membrane 200 in water inlet flow channel, and filtered pure water is gone out by being delivered to pure water along pure water runner
Mouth 220 is discharged and then realizes the purification to raw water, and purified concentrated water is delivered to concentrated water outlet 250 along water inlet flow channel and is discharged；Into
One step, during purification water making, since flow of the raw water on the flow direction along water inlet flow channel gradually decreases, water inlet flow channel
The middle continuous filtering and concentrating of raw water, since pure water outlet 220 exports 250 closer to original water inlet 210 relative to concentrated water, water quality is opposite
Preferably, the film surface osmotic pressure on water inlet flow channel extending direction at original water inlet 210 is smaller, by leaning on pure water outlet 220
Nearly original water inlet 210 designs, and film surface back pressure is smaller, and flow passage resistance force of waterproof is smaller at original water inlet 210, and filtered pure water can be fast
It flow to pure water outlet 220 fastly；According to formula: pressure-film surface osmotic pressure-film surface back pressure before film surface effective pressure=film, it can
Know, one timing of pressure before film, larger in the film surface effective pressure at original water inlet 210, the film surface pressure loss is small, water processed
Efficiency is higher；Since concentrated water outlet 250 is connected to the water outlet of water inlet flow channel, concentrated water outlet 250 is located at the end of water inlet flow channel,
Flow passage resistance force of waterproof is maximum, and the film surface back pressure at concentrated water outlet 250 is larger, and film surface effective pressure is smaller, and water efficiency processed is relatively
Low, film surface load mitigates, and then can mitigate the concentration polarization at concentrated water outlet 250, and it is anti-to improve reverse osmosis membrane filter element 10
Pollutant performance；As it can be seen that by by pure water outlet 220 relative to concentrated water outlet 250 closer to original water inlet 210, can be promoted into
Processed water efficiency of the water flow passage at original water inlet 210, reducing film surface load of the water inlet flow channel at concentrated water outlet 250 improves
Concentration polarization promotes the service life of reverse osmosis membrane filter element 10, and then promotes the service life of water purifier.
As shown in figure 5, the width of original water inlet 210 is greater than water inlet flow channel due in traditional reverse osmosis membrane filter element 10
Length, at this time when the timing of the thickness of reverse osmosis membrane 200 one, water is relatively low in crossflow velocity, and it is smaller that film surface washes away dynamics, film
Face concentration polarization is serious, and 10 resistance tocrocking of reverse osmosis membrane filter element is poor, and water inlet flow channel is relatively short, raw water and reverse osmosis membrane 200
Time of contact is shorter, and filtering is insufficient, and mass-transfer efficiency is low, the water low efficiency processed of reverse osmosis membrane filter element 10, therefore in above-described embodiment
On the basis of, the sectional area that permeable membrane element is located at the width direction of original water inlet 210 is less than permeable membrane element and is located at feed water flow
Sectional area on the length direction in road, water inlet area reduce, and opposite conventional reverse osmosis membrane filter 10 improves crossflow velocity, mitigate
The film surface concentration polarization of reverse osmosis membrane filter element 10 improves the antifouling property of reverse osmosis membrane filter element 10；In the base of this embodiment
On plinth, the width of original water inlet 210 is less than the length of water inlet flow channel, reduces the width of original water inlet 210, water inlet flow channel at this time
Narrow, in one timing of thickness of reverse osmosis membrane 200, water inlet area reduces, and improves crossflow velocity, while extending water inlet flow channel
Length keeps filtering runner longer and extends time of contact between raw water and reverse osmosis membrane 200, and sufficiently, mass-transfer efficiency is high for filtering,
Improve the water efficiency processed of reverse osmosis membrane filter element 10.
Based on any of the above embodiments, water inlet flow channel extends along the longitudinal direction of reverse osmosis membrane 200, stream of pure water
Road along reverse osmosis membrane 200 longitudinal direction extend, on the basis of this embodiment, the runner extending direction of water inlet flow channel with
The axis of central tube 100 is vertical or near vertical.As shown in Figures 1 to 4, when reverse osmosis membrane 200 is unfolded, water inlet flow channel hangs down
Axis that is straight or being approximately perpendicular to central tube 100, raw water enters water inlet flow channel through the mode of inside spin and is filtered at this time, pure
Water flows out water inlet flow channel through the mode of external spiral, at this time the end of water inlet flow channel, is adjacent at concentrated water outlet 250, with stream of pure water
The section start in road is close to central tube, and due to the exit of water inlet flow channel, i.e., at concentrated water outlet 250, water quality is poor, concentration difference
Serious polarization, film surface back pressure is larger at pure water runner corresponding with the exit of water inlet flow channel, when water inlet flow channel is vertical or
When being approximately perpendicular to the axis setting of central tube 100, the bending curvature close to the reverse osmosis membrane 200 of 100 position of central tube is big,
Crossflow velocity is larger, and then can slow down concentration polarization of the water inlet flow channel at concentrated water outlet 250, improves reverse osmosis membrane filter element
10 antifouling property, while also improving water efficiency processed；Or raw water enters water inlet flow channel through the mode of external spiral and filters, pure water warp
The mode of inside spin flows out water inlet flow channel, the end of starting point (i.e. at original water inlet 210) and pure water runner of water inlet flow channel
End is ipsilateral (i.e. at pure water outlet 220), is close to 100 position of central tube, and the beginning raw water quality of water inlet flow channel is preferable, and
The position film surface back pressure of pure water runner corresponding with the beginning of water inlet flow channel is smaller, when water inlet flow channel is vertical or is approximately perpendicular to
When the axis setting of central tube 100, the film bag bending curvature close to 100 position of central tube is larger, and crossflow velocity is larger, further
The water efficiency processed of reverse osmosis membrane filter element 10, is performed to maximum by the water efficiency processed for improving reverse osmosis membrane filter element 10.
Specifically, the longitudinal direction of reverse osmosis membrane 200 is then circumferentially side of the helical coil on the central tube 100,
As water processed when in water inlet flow channel water flow direction of advance be distributed side.In general, reverse osmosis membrane 200 is in concentrated water pipe 100
On roll multi-turn after, the long side be greater than short side.
It is important to point out that when the angle between the runner extending direction of water inlet flow channel and the axis of central tube 100 is
90 ° ± 5 °, the runner direction that can think water inlet flow channel and the axis of central tube 100 are vertical or near vertical, wherein water inlet
The runner extending direction of runner should be after entering along the water inlet of water inlet flow channel and before the discharge of the water outlet of water inlet flow channel
Water flow is in the overall flow direction of water inlet flow channel.
As shown in Figures 1 to 4, based on any of the above embodiments, reverse osmosis membrane 200 includes folding part 230, instead
It permeates diaphragm 200 to fold along folding part 230, may be implemented to seal 200 part of reverse osmosis membrane using folding mode at this time, mention
Sealing performance at high water inlet flow channel and pure water outlet 220；On the basis of this embodiment, reverse osmosis membrane group includes at least
Two layers of reverse osmosis membrane 200, reverse osmosis membrane 200 further include first open end 240 opposite with folding part 230 and are set to
The second open end between one open end 240 and folding part 230, the end of the second open end are formed with opening, first seal
Part seals or is fully sealed opening and be located at the side wall on the inside of folding with reverse osmosis membrane 200 and limits to be formed along reverse osmosis membrane
The water inlet flow channel that 200 longitudinal direction of piece extends is formed with along reverse osmosis membrane 200 between two neighboring reverse osmosis membrane 200
The gap that longitudinal direction extends, second seal part seal clearance and reverse osmosis membrane 200 are located at the limit of the side wall on the inside of gap
System forms the pure water runner that extends along 200 longitudinal direction of reverse osmosis membrane, further, by by first seal and reverse osmosis membrane
The inner wall of piece 200 limits to form water inlet flow channel, and water can be flowed along the extending direction of water inlet flow channel at this time, plays guiding role,
The setting of first seal the concentrated water in water inlet flow channel can be isolated with pure water；Similarly, second seal confidential paper and
The side wall of gap limits to form pure water runner, and pure water runner plays guiding role at this time, allows pure water along the extension of pure water runner
Direction flowing, while the setting of second seal raw water can be isolated with pure water.Further, in the base of this embodiment
On plinth, folding part 230 far from 250 setting of concentrated water outlet, pure water outlet 220 with respect to concentrated water outlet 250 closer to folding part 230,
Reverse osmosis membrane 200 is winding axis with central tube 100 and is that coiling starting point twines with the first open end 240 or folding part 230
It is wound on the outer wall of central tube 100.
As shown in Figure 1, first seal part sealed opening and first seal and reverse osmosis membrane 200 are located at opening
Side wall limits to form original water inlet 210, in this way, the raw water of processing to be clean is delivered to water inlet flow channel by original water inlet 210, it is dense
Water out 250 is set to the first open end 240, and the portion 230 folded against of the first open end 240 is closer to central tube 100, and adjacent two
Two folding parts 230 interval setting of a reverse osmosis membrane 200 forms pure water outlet 220, pure water outlet 220 and pure water runner
Outlet, pure water outlet 220 export 250 closer to original water inlet 210, at this point, original water inlet 210 is set to relative to concentrated water
Between pure water outlet 220 and concentrated water outlet 250, and pure water outlet 220 with respect to concentrated water outlet 250 closer to original water inlet 210, this
When, the raw water with purification enters water inlet flow channel by permeating the end direction of membrane filter, passes through reverse osmosis membrane in water inlet flow channel
Piece 200 is filtered, and filtered pure water infiltrates into pure water runner and is discharged along pure water outlet 220；Further, it is based on above-mentioned point
Analysis, due to pure water outlet 220 with respect to concentrated water outlet 250 closer to original water inlet 210, can be promoted water inlet flow channel close to raw water into
Water efficiency processed at mouth 210, reducing film surface load of the water inlet flow channel at concentrated water outlet 250 improves concentration polarization, is promoted instead
The service life of membrane filter 10 is permeated, and then promotes the service life of water purifier, therefore the reverse osmosis membrane filter element in the present embodiment
10 have the advantages of high purification efficiency and long service life.Further, the side wall of central tube 100 offers discharge outlet, passes through row
The mouth of a river is connected to concentrated water outlet 250 and realizes water conservancy diversion concentrated water.In this embodiment, reverse osmosis membrane 200 is to twine with central tube 100
It is the outer wall that coiling starting point is wrapped in central tube 100 around axis and with the first open end 240.Wherein, first seal can be set
It is placed in opening, or is set to reverse osmosis membrane 200 and is located in the opposite two side walls that are open for partially sealing the opening
And then original water inlet 210 is formed, when reverse osmosis membrane 200 is wound on central tube 100, original water inlet 210 is set to court
To on the end face of 100 end of central tube.
As shown in Fig. 2, specifically, there are many modes that raw water is conveyed to water inlet flow channel, and in this embodiment, the reverse osmosis
Permeable membrane filter core 10 further includes water inlet pipe 600, and original water inlet 210 is connected to by water inlet pipe 600 with supply equipment, and then supply equipment
Interior raw water is delivered in water inlet flow channel by water inlet pipe 600.
As shown in figure 3, of course, in other embodiments, two folding parts 230 of two neighboring reverse osmosis membrane 200
Interval setting forms pure water outlet 220, the outlet of pure water outlet 220 and pure water runner, and concentrated water outlet 250 is set to first
Open end 240, folding part 230 offer original water inlet 210, and the portion 230 folded against of the first open end 240 is closer to central tube
100, pure water outlet 220 exports 250 closer to original water inlet 210, at this point, raw water to be clean is from positioned at folding part with respect to concentrated water
230 original water inlet 210 enters water inlet flow channel, is filtered in water inlet flow channel by reverse osmosis membrane 200, filtered pure
Water penetration is discharged to pure water runner and along pure water outlet 220；Further, based on above-mentioned analysis, since pure water outlet 220 is relatively dense
Water out 250 can promote processed water efficiency of the water inlet flow channel at original water inlet 210 closer to original water inlet 210, reduce into
Film surface load of the water flow passage at concentrated water outlet 250 improves concentration polarization, promotes the service life of reverse osmosis membrane filter element 10, into
And the service life of water purifier is promoted, therefore the reverse osmosis membrane filter element 10 in the present embodiment has purification efficiency height and service life
Long advantage.Further, the side wall of central tube 100 offers discharge outlet, is connected to realization with concentrated water outlet 250 by discharge outlet and leads
Flow concentrated water.In this embodiment, reverse osmosis membrane 200 is winding axis with central tube 100 and is coiling with the first open end 240
Starting point is wrapped in the outer wall of central tube 100.
Further, in order to which raw water and pure water is isolated, in this embodiment, which further includes that third is close
Sealing, the original water inlet 210 for being located in one of folding part 230 includes the first outer edge, positioned at another adjacent folding part
230 original water inlet 210 includes the second outer edge, and the gap between the first outer edge and the second outer edge passes through third sealing element
Filtered pure water is discharged along pure water outlet 220 at this point, restriction effect is equally played in the setting of third sealing element in sealing.
As shown in figure 4, in another embodiment, the side wall of second seal and opening limits to form pure water outlet 220,
The outlet of pure water outlet 220 and pure water runner, folding part 230 offer original water inlet 210, and concentrated water outlet 250 is set to
First open end 240, closer to central tube 100, the circumferential side wall of central tube 100 is opened at folding part 230 opposite first open end 240
Equipped with water inlet, water inlet is connected to original water inlet 210, and pure water outlet 220 exports 250 closer to original water inlet with respect to concentrated water
210, at this point, conveying raw water to be clean to water inlet flow channel by central tube 100, pass through reverse osmosis membrane in water inlet flow channel
200 are filtered, and filtered pure water infiltrates into pure water runner and is discharged along pure water outlet 220；Further, it is based on above-mentioned point
Analysis, due to pure water outlet 220 with respect to concentrated water outlet 250 closer to original water inlet 210, can be promoted water inlet flow channel close to raw water into
Water efficiency processed at mouth 210, reducing film surface load of the water inlet flow channel at concentrated water outlet 250 improves concentration polarization, is promoted instead
The service life of membrane filter 10 is permeated, and then promotes the service life of water purifier, therefore the reverse osmosis membrane filter element in the present embodiment
10 have the advantages of high purification efficiency and long service life.In this embodiment, reverse osmosis membrane 200 is with central tube 100
Winding axis and the outer wall for being wrapped in central tube 100 for coiling starting point with folding part 230.
Specifically, first seal, second seal and third sealing element can be sealing glue.
Based on any of the above embodiments, when reverse osmosis membrane 200 can compress water inlet flow channel under the effect of the pressure
Conveying space be unfavorable for the flowing of water, further include into water filter in the reverse osmosis membrane filter element 10, filter of intaking is set into water
In runner, in this way, water inlet filter can support space certain together when being pressurized in permeable membrane, and filter of intaking can also be risen
To the effect of conveying water.
Based on any of the above embodiments, when reverse osmosis membrane 200 can compress pure water runner under the effect of the pressure
Conveying space be unfavorable for the flowing of water, which further includes conducting element, and conducting element is set in pure water runner.
In this way, conducting element can support space certain together when being pressurized in permeable membrane, and conducting element can also play conveying water
Effect, in this embodiment, conducting element is flow-guiding cloth.
It is noted that a kind of water purifier is further related in an embodiment, including reverse osmosis in any of the above-described embodiment
Membrane filter 10.
Above-mentioned water purifier is delivered to water inlet flow channel, feed water flow by original water inlet 210 when in use, by raw water to be clean
Raw water is filtered by reverse osmosis membrane 200 in road, and filtered pure water is discharged by being delivered to pure water outlet 220 along pure water runner
And then purification of the realization to raw water；Further, during purification water making, since raw water is on the flow direction along water inlet flow channel
Flow gradually decrease, the continuous filtering and concentrating of raw water in water inlet flow channel, due to pure water outlet 220 relative to concentrated water outlet 250 more
Close to original water inlet 210, water quality is relatively preferable, the film surface osmotic pressure on water inlet flow channel extending direction at original water inlet 210
Smaller, by designing pure water outlet 220 close to original water inlet 210, film surface back pressure is smaller, flow passage resistance force of waterproof at original water inlet 210
Smaller, filtered pure water can rapidly flow to pure water outlet 220；According to formula: being pressed before film surface effective pressure=film
Power-film surface osmotic pressure-film surface back pressure, it is known that, one timing of pressure before film is effectively pressed in the film surface at original water inlet 210
Power is larger, and the film surface pressure loss is small, and water efficiency processed is higher；Since concentrated water outlet 250 is connected to the water outlet of water inlet flow channel, concentrated water
Outlet 250 is located at the end of water inlet flow channel, and flow passage resistance force of waterproof is maximum, and the film surface back pressure at concentrated water outlet 250 is larger, and film surface has
Effect pressure is smaller, and water processed is relatively inefficient, and film surface load mitigates, and then can mitigate the concentration difference at concentrated water outlet 250
Polarization improves 10 antifouling property of reverse osmosis membrane filter element；As it can be seen that by the way that pure water outlet 220 is more leaned on relative to concentrated water outlet 250
Nearly original water inlet 210, can promote processed water efficiency of the water inlet flow channel at original water inlet 210, reduce water inlet flow channel close to dense
Film surface load at water out 250 improves concentration polarization, promotes the service life of reverse osmosis membrane filter element 10, and then promote water purifier
Service life.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Only several embodiments of the present invention are expressed for above embodiments, and the description thereof is more specific and detailed, but can not
Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art, In
Under the premise of not departing from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (15)
1. a kind of reverse osmosis membrane filter element characterized by comprising
Central tube；And
Reverse osmosis membrane group, the reverse osmosis membrane group are coated on the outer wall of the central tube, and the reverse osmosis membrane group is formed with concentrated water
Outlet, original water inlet, pure water outlet, water inlet flow channel and pure water runner, the water inlet of the original water inlet and the water inlet flow channel
Connection, the outlet of the water inlet flow channel and the concentrated water outlet, the reverse osmosis membrane group includes reverse osmosis membrane, described anti-
Infiltration diaphragm is set between the water inlet flow channel and the pure water runner for filtering raw water, the pure water outlet with it is described pure
The water outlet of water flow passage is connected to, and the pure water outlet is exported relative to the concentrated water closer to the original water inlet.
2. reverse osmosis membrane filter element according to claim 1, which is characterized in that the permeable membrane element be located at the raw water into
The sectional area of the width direction of mouth is less than the permeable membrane element and is located at the sectional area on the length direction of the water inlet flow channel.
3. reverse osmosis membrane filter element according to claim 1, which is characterized in that the width of the original water inlet be less than it is described into
The length of water flow passage.
4. reverse osmosis membrane filter element according to claim 1, which is characterized in that the water inlet flow channel is along the reverse osmosis membrane
Longitudinal direction extend, the pure water runner along the reverse osmosis membrane longitudinal direction extend.
5. reverse osmosis membrane filter element according to claim 4, which is characterized in that the runner extending direction of the water inlet flow channel with
The axis of the central tube is vertical or near vertical.
6. reverse osmosis membrane filter element according to claim 4, which is characterized in that the reverse osmosis membrane includes folding part, institute
Reverse osmosis membrane is stated to fold along the folding part.
7. reverse osmosis membrane filter element according to claim 6, which is characterized in that further include first seal and the second sealing
Part, the reverse osmosis membrane group include at least two layers reverse osmosis membrane, and the reverse osmosis membrane further includes and the folding part
The first opposite open end and the second open end being set between first open end and the folding part, described second opens
The end at mouthful end is formed with opening, the first seal part sealing or be fully sealed it is described be open and with the reverse osmosis membrane
It is located at the side wall on the inside of folding in piece to limit to form the water inlet flow channel, is formed with edge between the two neighboring reverse osmosis membrane
The gap that the longitudinal direction of the reverse osmosis membrane extends, the second seal part seal the gap and with the reverse osmosis
The side wall that permeable membrane piece is located on the inside of the gap limits to form pure water runner.
8. reverse osmosis membrane filter element according to claim 7, which is characterized in that opened described in the first seal part sealing
The side wall that mouth and the first seal and the reverse osmosis membrane are located at the opening limits to form the original water inlet, described
Concentrated water outlet is set to first open end, and the relatively described folding part in the first open end is closer to the central tube, phase
Two folding part intervals of adjacent two reverse osmosis membranes are arranged to form the pure water outlet, and the pure water outlet is opposite
It exports in the concentrated water closer to the original water inlet.
9. reverse osmosis membrane filter element according to claim 7, which is characterized in that two of the two neighboring reverse osmosis membrane
The folding part interval is arranged to form the pure water outlet, and the concentrated water outlet is set to first open end, the folding
Portion offers the original water inlet, and closer to the central tube, the pure water goes out for the relatively described folding part in the first open end
Mouth is exported relative to the concentrated water closer to the original water inlet.
10. reverse osmosis membrane filter element according to claim 9, which is characterized in that further include third sealing element, be located therein one
The original water inlet of a folding part includes the first outer edge, the raw water positioned at another adjacent folding part
Import includes the second outer edge, and the gap between first outer edge and second outer edge passes through the third sealing element
Sealing.
11. reverse osmosis membrane filter element according to claim 7, which is characterized in that the second seal and the opening
Side wall limits to form the pure water outlet, and the folding part offers the original water inlet, and the concentrated water outlet is set to described
First open end, relatively described first open end in the folding part is closer to the central tube, the circumferential side wall of the central tube
Water inlet is offered, the water inlet is connected to the original water inlet, and the pure water outlet is more leaned on relative to concentrated water outlet
The nearly original water inlet.
12. reverse osmosis membrane filter element according to claim 1, which is characterized in that further include water inlet pipe, the original water inlet is logical
The water inlet pipe is crossed to be connected to supply equipment.
13. according to claim 1 to 12 described in any item reverse osmosis membrane filter elements, which is characterized in that further include into water filter, institute
It states and is set in the water inlet flow channel into water filter for guiding water flow.
14. reverse osmosis membrane filter element according to claim 13, which is characterized in that further include conducting element, the conducting element is set
It is placed in the pure water runner for guiding water flow.
15. a kind of water purifier, which is characterized in that including the described in any item reverse osmosis membrane filter elements of claim 1 to 14.
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| CN201910895184.5A CN110508146A (en) | 2019-09-20 | 2019-09-20 | Reverse osmosis membrane filter element and water purifier |
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| CN201910895184.5A CN110508146A (en) | 2019-09-20 | 2019-09-20 | Reverse osmosis membrane filter element and water purifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610433A (en) * | 2020-12-08 | 2021-04-06 | 南京工业大学 | Forward osmosis-electric salt difference energy efficient continuous power generation device based on porous medium |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838033A (en) * | 2010-04-23 | 2010-09-22 | 艾欧史密斯（上海）水处理产品有限公司 | Rolled reverse osmosis membrane element |
| 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 |
| CN201799219U (en) * | 2010-09-30 | 2011-04-20 | 艾欧史密斯（上海）水处理产品有限公司 | Reverse osmosis filter with water yielded at two ends |
| CN103394288A (en) * | 2013-08-24 | 2013-11-20 | 赵东旭 | Coiled type reverse osmosis membrane element and water purifier using same |
| CN103394287A (en) * | 2013-08-24 | 2013-11-20 | 赵东旭 | Spiral wound type reverse osmosis membrane and method for cleaning same |
| CN104226113A (en) * | 2013-06-19 | 2014-12-24 | 珠海格力电器股份有限公司 | Reverse osmosis membrane filter element and water treatment equipment with reverse osmosis membrane filter element |
| CN104607047A (en) * | 2015-02-13 | 2015-05-13 | 湖南澳维环保科技有限公司 | Roll type reverse osmosis membrane element |
| CN104941448A (en) * | 2015-07-07 | 2015-09-30 | 珠海格力电器股份有限公司 | Reverse osmosis membrane element |
| CN106474925A (en) * | 2016-10-17 | 2017-03-08 | 珠海格力电器股份有限公司 | Reverse-osmosis membrane element and purifier |
| CN108751351A (en) * | 2018-08-06 | 2018-11-06 | 珠海格力电器股份有限公司 | Reverse osmosis membrane filter element with new flow passage structure and anti-penetration water purifier |
| CN108996615A (en) * | 2018-09-13 | 2018-12-14 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane filter element and water purifier |
| CN108996614A (en) * | 2018-09-13 | 2018-12-14 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane filter element and water purifier |
| CN109179579A (en) * | 2018-10-17 | 2019-01-11 | 珠海格力电器股份有限公司 | Coiled reverse osmosis membrane filter core and anti-penetration water purifier |
| CN109264826A (en) * | 2018-10-26 | 2019-01-25 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane structure, filter core and water purifier |
| CN109371241A (en) * | 2018-11-06 | 2019-02-22 | 刘昊 | A kind of earth of positive pole decopper(ing) device |
| CN109569303A (en) * | 2019-01-24 | 2019-04-05 | 珠海格力电器股份有限公司 | Coiled reverse osmosis membrane element, water purifier and water purifier water controling method |
| CN209039122U (en) * | 2018-09-13 | 2019-06-28 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane filter element and water purifier |
| CN209098258U (en) * | 2018-10-26 | 2019-07-12 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane structure, filter core and water purifier |
-
2019
- 2019-09-20 CN CN201910895184.5A patent/CN110508146A/en active Pending
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838033A (en) * | 2010-04-23 | 2010-09-22 | 艾欧史密斯（上海）水处理产品有限公司 | Rolled reverse osmosis membrane element |
| CN201799219U (en) * | 2010-09-30 | 2011-04-20 | 艾欧史密斯（上海）水处理产品有限公司 | Reverse osmosis filter with water yielded at two ends |
| 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 |
| CN104226113A (en) * | 2013-06-19 | 2014-12-24 | 珠海格力电器股份有限公司 | Reverse osmosis membrane filter element and water treatment equipment with reverse osmosis membrane filter element |
| CN103394288A (en) * | 2013-08-24 | 2013-11-20 | 赵东旭 | Coiled type reverse osmosis membrane element and water purifier using same |
| CN103394287A (en) * | 2013-08-24 | 2013-11-20 | 赵东旭 | Spiral wound type reverse osmosis membrane and method for cleaning same |
| CN104607047A (en) * | 2015-02-13 | 2015-05-13 | 湖南澳维环保科技有限公司 | Roll type reverse osmosis membrane element |
| CN104941448A (en) * | 2015-07-07 | 2015-09-30 | 珠海格力电器股份有限公司 | Reverse osmosis membrane element |
| CN106474925A (en) * | 2016-10-17 | 2017-03-08 | 珠海格力电器股份有限公司 | Reverse-osmosis membrane element and purifier |
| CN108751351A (en) * | 2018-08-06 | 2018-11-06 | 珠海格力电器股份有限公司 | Reverse osmosis membrane filter element with new flow passage structure and anti-penetration water purifier |
| CN108996615A (en) * | 2018-09-13 | 2018-12-14 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane filter element and water purifier |
| CN108996614A (en) * | 2018-09-13 | 2018-12-14 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane filter element and water purifier |
| CN209039122U (en) * | 2018-09-13 | 2019-06-28 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane filter element and water purifier |
| CN109179579A (en) * | 2018-10-17 | 2019-01-11 | 珠海格力电器股份有限公司 | Coiled reverse osmosis membrane filter core and anti-penetration water purifier |
| CN109264826A (en) * | 2018-10-26 | 2019-01-25 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane structure, filter core and water purifier |
| CN209098258U (en) * | 2018-10-26 | 2019-07-12 | 珠海格力电器股份有限公司 | A kind of reverse osmosis membrane structure, filter core and water purifier |
| CN109371241A (en) * | 2018-11-06 | 2019-02-22 | 刘昊 | A kind of earth of positive pole decopper(ing) device |
| CN109569303A (en) * | 2019-01-24 | 2019-04-05 | 珠海格力电器股份有限公司 | Coiled reverse osmosis membrane element, water purifier and water purifier water controling method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610433A (en) * | 2020-12-08 | 2021-04-06 | 南京工业大学 | Forward osmosis-electric salt difference energy efficient continuous power generation device based on porous medium |
| CN112610433B (en) * | 2020-12-08 | 2022-05-03 | 南京工业大学 | Forward osmosis-electric salt difference energy efficient continuous power generation device based on porous medium |
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