CN110498479A - A kind of reverse osmosis filter element device of dual-membrane type and a kind of water purifier - Google Patents
A kind of reverse osmosis filter element device of dual-membrane type and a kind of water purifier Download PDFInfo
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- CN110498479A CN110498479A CN201910895927.9A CN201910895927A CN110498479A CN 110498479 A CN110498479 A CN 110498479A CN 201910895927 A CN201910895927 A CN 201910895927A CN 110498479 A CN110498479 A CN 110498479A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 406
- 239000012528 membrane Substances 0.000 title claims abstract description 327
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 121
- 230000005764 inhibitory process Effects 0.000 claims description 37
- 238000001914 filtration Methods 0.000 claims description 10
- 238000011026 diafiltration Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000001728 nano-filtration Methods 0.000 description 4
- 238000000108 ultra-filtration Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
Classifications
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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
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A kind of reverse osmosis filter element device of dual-membrane type is provided with the first membrane filter unit and the second membrane filter unit, and the first membrane filter unit and the second membrane filter unit are with piping connection.In operating condition, the concentrated water A handled through the first membrane filter unit is further processed using the second membrane filter unit, so as to improve pure water/concentrated water ratio, reduces the waste of water resource.The reverse osmosis filter element device of dual-membrane type of the present invention is by two independent membrane filter units simultaneously, it is from the case where the fouling of rear end elder generation based on reverse osmosis filter core, so user only needs replacing the second membrane filter unit, without the first membrane filter unit for going replacement not fail, therefore replacement cost can be substantially reduced.A kind of water purifier, is provided with the reverse osmosis filter element device of dual-membrane type as described above and water purifier main body, and the reverse osmosis filter element device of dual-membrane type is assemblied in water purifier main body.The water purification function is not influencing to improve pure water/concentrated water ratio under there is producing water water quality in the membrane component service life.
Description
Technical field
The present invention relates to reverse osmosis filter core field, in particular to a kind of reverse osmosis filter element device of dual-membrane type and a kind of water purification
Machine.
Background technique
Reverse osmosis filter core technology in the prior art, pure water/concentrated water proportion adjustment portion big absolutely are 1:1 or 2:1, these
Pure water/concentrated water ratio will cause the waste of water resource.But if directly improved in existing reverse osmosis technology merely pure water/
Concentrated water ratio can reduce the membrane component service life again while also reduce producing water water quality.
Therefore, in view of the shortcomings of the prior art, providing a kind of reverse osmosis filter element device of dual-membrane type and a kind of water purifier to solve
Prior art deficiency is very necessary.
Summary of the invention
The one of purpose of the present invention is to avoid the deficiencies in the prior art place and provide a kind of dual-membrane type reverse osmosis diafiltration
Core apparatus.Under the reverse osmosis filter element device of the dual-membrane type there can be producing water water quality not influencing the membrane component service life, pure water/concentrated water ratio is improved
Example.
Above-mentioned purpose of the invention is realized by following technical measures:
A kind of reverse osmosis filter element device of dual-membrane type is provided, the first membrane filter unit and the second membrane filter unit are provided with, the
One membrane filter unit and the second membrane filter unit are with piping connection.
In operating condition, raw water enter the first membrane filter unit, the first membrane filter unit by processing obtain pure water A and
Concentrated water A, concentrated water A enter the second membrane filter unit, and the second membrane filter unit obtains pure water B and concentrated water B by processing, pure water B with
Raw water is converged into the first membrane filter unit, and the reverse osmosis filter element device of dual-membrane type is discharged in pure water A, and dual-membrane type reverse osmosis is discharged in concentrated water B
Diafiltration core apparatus.
Pure water/concentrated water ratio when by operating condition is defined as C, and there are C > 2:1.
When rinsing operating condition, raw water enter the second membrane filter unit, the second membrane filter unit by processing obtain pure water A and
Concentrated water A, pure water A enter the first membrane filter unit, and the first membrane filter unit obtains concentrated water B by processing, and concentrated water B converges with raw water
Into the second membrane filter unit, the reverse osmosis filter element device of dual-membrane type is discharged in concentrated water A.
The failure duration of first membrane filter unit is defined as E1, the failure duration of the second membrane filter unit is defined as E2,
There are E1> E2。
Preferably, above-mentioned C >=3:1.
Preferably, above-mentioned C >=4:1.
The water yield of first membrane filter unit is defined as D1, the water yield of the second membrane filter unit is defined as D2, exist
D1≥D2。
The reverse osmosis filter element device of dual-membrane type of the invention, is additionally provided with pump element, and pump element filters with the first film single respectively
Member and the second film unit are with piping connection.
In operating condition, raw water enters the first membrane filter unit by pump element pressurization, and the first membrane filter unit passes through
Processing obtains pure water A and concentrated water A, and concentrated water A enters the second membrane filter unit, and the second membrane filter unit obtains pure water B by processing
With concentrated water B, pure water B and raw water are converged into the first membrane filter unit after pump element is pressurized, and it is reverse osmosis that dual-membrane type is discharged in pure water A
Filter element device, concentrated water B and concentrated water A converge the discharge reverse osmosis filter element device of dual-membrane type.
When rinsing operating condition, raw water enters the second membrane filter unit by pump element pressurization, and the second membrane filter unit passes through
Processing obtains pure water A and concentrated water A, and pure water A enters the first membrane filter unit, and the first membrane filter unit obtains concentrated water B by processing,
Concentrated water B and raw water, which are converged, enters the second membrane filter unit through pump element, and the reverse osmosis filter element device of dual-membrane type is discharged in concentrated water A.
The reverse osmosis filter element device of dual-membrane type of the invention is additionally provided with scale inhibition unit, and scale inhibition unit and pump element are with pipeline
Connection.
In operating condition, raw water obtains raw water A by scale inhibition cell processing, and raw water A enters the by pump element pressurization
One membrane filter unit, the first membrane filter unit obtain pure water A and concentrated water A by processing, and concentrated water A enters the second membrane filter unit,
Second membrane filter unit obtains pure water B and concentrated water B by processing, and pure water B and raw water A converge enters first after pump element is pressurized
The reverse osmosis filter element device of dual-membrane type is discharged in membrane filter unit, pure water A, and concentrated water B and concentrated water A converge the discharge reverse osmosis filter core of dual-membrane type
Device.
When rinsing operating condition, raw water obtains raw water A by scale inhibition cell processing, and raw water A enters the by pump element pressurization
Two membrane filter units, the second membrane filter unit obtain pure water A and concentrated water A by processing, and pure water A enters the first membrane filter unit,
First membrane filter unit obtains concentrated water B, concentrated water B and raw water A by processing and converges through pump element into the second membrane filter unit, dense
The reverse osmosis filter element device of dual-membrane type is discharged in water A.
The reverse osmosis filter element device of dual-membrane type of the invention, is additionally provided with scale inhibition unit, scale inhibition unit with respectively with pump element,
First membrane filter unit and the second membrane filter unit are with piping connection.
In operating condition, raw water obtains raw water A by scale inhibition cell processing, and raw water A enters the by pump element pressurization
One membrane filter unit, the first membrane filter unit obtain pure water A and concentrated water A by processing, and concentrated water A enters the second membrane filter unit,
Second membrane filter unit obtains pure water B and concentrated water B by processing；Pure water B and raw water are converged after scale inhibition cell processing, then through pumping
Element pressurization, finally enters the first membrane filter unit；The reverse osmosis filter element device of dual-membrane type is discharged in pure water A, and concentrated water B and concentrated water A converge
Close the discharge reverse osmosis filter element device of dual-membrane type.
When rinsing operating condition, raw water obtains raw water A by scale inhibition cell processing, and raw water A enters the by pump element pressurization
Two membrane filter units, the second membrane filter unit obtain pure water A and concentrated water A by processing, and pure water A enters the first membrane filter unit,
First membrane filter unit obtains concentrated water B by processing；Concentrated water B and raw water are converged after scale inhibition cell processing, then increase through pump element
Pressure, finally enters the second membrane filter unit；The reverse osmosis filter element device of dual-membrane type is discharged in concentrated water A.
The reverse osmosis filter element device of dual-membrane type of the invention, is additionally provided with pump element, pump element respectively with scale inhibition unit, first
Membrane filter unit and the second membrane filter unit piping connection.
In operating condition, raw water first passes through scale inhibition cell processing, the raw water A through scale inhibition cell processing, raw water A using
Pump element pressurization enters back into the first membrane filter unit, and the first membrane filter unit obtains pure water A and concentrated water A by processing, concentrated water A into
Enter the second membrane filter unit, the second membrane filter unit obtains pure water B and concentrated water B by processing, and pure water B passes through scale inhibition cell processing
It after converging afterwards with raw water A, then is pressurized through pump element and enters back into the first membrane filter unit, the reverse osmosis filter core of dual-membrane type is discharged in pure water A
The reverse osmosis filter element device of dual-membrane type is discharged in device, concentrated water B.
When rinsing operating condition, raw water first passes through scale inhibition cell processing, and the raw water A through scale inhibition cell processing, raw water A are entered back into
Second membrane filter unit, the second membrane filter unit obtain pure water A and concentrated water A by processing, and pure water A is pressurized by pump element to be entered
First membrane filter unit, the first membrane filter unit obtain concentrated water B, concentrated water B and raw water A by processing and converge into the filtering of the second film
The reverse osmosis filter element device of dual-membrane type is discharged in unit, concentrated water A.
Preferably, above-mentioned first membrane filter unit is ultrafiltration membrane reverse osmosis filter core, nanofiltration membrane reverse osmosis filter core or reverse osmosis
The reverse osmosis filter core of permeable membrane.
Preferably, above-mentioned second membrane filter unit is ultrafiltration membrane reverse osmosis filter core, nanofiltration membrane reverse osmosis filter core or reverse osmosis
The reverse osmosis filter core of permeable membrane.
The reverse osmosis filter element device of dual-membrane type of the invention, be additionally provided with proportioning valve, proportioning valve and the second membrane filter unit with
Piping connection and the production water side for being located at the second membrane filter unit.
The reverse osmosis filter element device of a kind of dual-membrane type of the invention, is provided with the first membrane filter unit and the filtering of the second film is single
Member, the first membrane filter unit and the second membrane filter unit are with piping connection.In operating condition, handled through the first membrane filter unit
Obtained concentrated water A is further processed using the second membrane filter unit, so as to improve pure water/concentrated water ratio, reduces water money
The waste in source.The reverse osmosis filter element device of dual-membrane type of the present invention is based on reverse osmosis filter core by two independent membrane filter units simultaneously
Be from the case where the fouling of rear end elder generation, so user only needs replacing the second membrane filter unit, without go that replacement do not fail the
One membrane filter unit, therefore replacement cost can be substantially reduced.
Another object of the present invention is to avoid the deficiencies in the prior art place and provide a kind of water purifier.The water purification function
It is not influencing to improve pure water/concentrated water ratio under there is producing water water quality in the membrane component service life.
Above-mentioned purpose of the invention is realized by following technical measures:
A kind of water purifier is provided, the reverse osmosis filter element device of dual-membrane type as described above and water purifier main body, double films are provided with
The reverse osmosis filter element device of formula is assemblied in water purifier main body.
In operating condition, raw water enter the first membrane filter unit, the first membrane filter unit by processing obtain pure water A and
Concentrated water A, concentrated water A enter the second membrane filter unit, and the second membrane filter unit obtains pure water B and concentrated water B by processing, pure water B with
Raw water is converged into the first membrane filter unit, and water purifier is discharged in pure water A, and water purifier is discharged in concentrated water B.
A kind of water purifier of the invention is provided with the reverse osmosis filter element device of dual-membrane type as described above and water purifier main body,
The reverse osmosis filter element device of dual-membrane type is assemblied in water purifier main body.The water purification function has producing water water quality not influencing the membrane component service life
Under, improve pure water/concentrated water ratio.
Detailed description of the invention
Using attached drawing, the present invention is further illustrated, but the content in attached drawing is not constituted to any limit of the invention
System.
Fig. 1 be embodiment 1 a kind of reverse osmosis filter element device of dual-membrane type in operating condition water (flow) direction schematic diagram.
Fig. 2 be embodiment 1 a kind of reverse osmosis filter element device of dual-membrane type when rinsing operating condition water (flow) direction schematic diagram.
Fig. 3 be embodiment 2 a kind of reverse osmosis filter element device of dual-membrane type in operating condition water (flow) direction schematic diagram.
Fig. 4 be embodiment 2 a kind of reverse osmosis filter element device of dual-membrane type when rinsing operating condition water (flow) direction schematic diagram.
Fig. 5 be embodiment 3 a kind of reverse osmosis filter element device of dual-membrane type in operating condition water (flow) direction schematic diagram.
Fig. 6 be embodiment 3 a kind of reverse osmosis filter element device of dual-membrane type when rinsing operating condition water (flow) direction schematic diagram.
Fig. 7 be embodiment 4 a kind of reverse osmosis filter element device of dual-membrane type in operating condition water (flow) direction schematic diagram.
Fig. 8 be embodiment 4 a kind of reverse osmosis filter element device of dual-membrane type when rinsing operating condition water (flow) direction schematic diagram.
Fig. 1 includes into Fig. 8:
First membrane filter unit 1,
Second membrane filter unit 2,
Scale inhibition unit 3,
Pump element 4,
Proportioning valve 5.
Specific embodiment
Technical solution of the present invention is described further with the following Examples.
Embodiment 1.
A kind of reverse osmosis filter element device of dual-membrane type is provided with the first membrane filter unit 1 and the second film mistake as illustrated in fig. 1 and 2
Unit 2 is filtered, the first membrane filter unit 1 and the second membrane filter unit 2 are with piping connection.
In operating condition, raw water enters the first membrane filter unit 1, and the first membrane filter unit 1 obtains pure water A by processing
Enter the second membrane filter unit 2 with concentrated water A, concentrated water A, the second membrane filter unit 2 obtains pure water B and concentrated water B, pure water by processing
B and raw water are converged into the first membrane filter unit 1, and the reverse osmosis filter element device of dual-membrane type is discharged in pure water A, and dual-membrane type is discharged in concentrated water B
Reverse osmosis filter element device.
When rinsing operating condition, raw water enters the second membrane filter unit 2, and the second membrane filter unit 2 obtains pure water A by processing
Enter the first membrane filter unit 1 with concentrated water A, pure water A, the first membrane filter unit 1 obtains concentrated water B, concentrated water B and raw water by processing
Converge and enter the second membrane filter unit 2, the reverse osmosis filter element device of dual-membrane type is discharged in concentrated water A.
Pure water/concentrated water ratio when by operating condition is defined as C, and there are C > 2:1.Further preferred C >=4:1 or C
>=3:1, the C of the present embodiment are specially 4:1.
The failure duration of first membrane filter unit 1 is defined as E by the present invention1, by the failure duration of the second membrane filter unit 2
It is defined as E2, there are E1> E2.Because the second membrane filter unit 2 of the invention is located at the rear end of the first membrane filter unit 1.Second
Membrane filter unit 2 is better than the first fouling of the first membrane filter unit 1, so the failure duration of the second membrane filter unit 2 is less than the first film
The failure duration of filter element 1；To which the replacement frequency of the second membrane filter unit 2 is greater than the replacement frequency of the first membrane filter unit 1
Rate.
Many situations of membrane reverse osmosis filter core failure are not global failure, and are proximate to the effective area of concentrated water outlet section
Appearance blocks and fouling, and the water-yielding capacity of membrane component is caused to decline.The reverse osmosis filter element device of dual-membrane type of the present invention is by two independences
Component constitute, be from the case where the fouling of rear end elder generation, so only to need replacing the filtering of the second film single by user based on reverse osmosis filter core
Member 2 without the first membrane filter unit 1 for going replacement not fail, therefore can substantially reduce replacement cost.
Second membrane filter unit 22 of the invention is ultrafiltration membrane reverse osmosis filter core, nanofiltration membrane reverse osmosis filter core or reverse osmosis
Membrane reverse osmosis filter core, specific embodiment according to the actual situation depending on.First membrane filter unit 11 of the invention is ultrafiltration membrane
Reverse osmosis filter core unit, nanofiltration membrane reverse osmosis filter core unit or the reverse osmosis filter core unit of reverse osmosis membrane, specific embodiment
Depending on according to the actual situation.Specific second membrane filter unit 22 of the present embodiment is the reverse osmosis filter core of reverse osmosis membrane, the first film mistake
Filter unit 11 is the reverse osmosis filter core unit of reverse osmosis membrane.
The water yield of first membrane filter unit 1 is defined as D by the present invention1, the water yield of the second membrane filter unit 2 is defined
For D2, there are D1≥D2.D of the invention2It can be D10.5 times, 0.4 times, 0.3 times, 0.25 times, 0.2 times etc., as long as being less than
Any multiple equal to 1.0 times is ok, specific multiple according to the actual situation depending on.The present embodiment is specially D2For 0.2D1。
Work as 0.2D according to many experiments confirmation1When, the cleaning of the first membrane filter unit 1 can be effectively ensured, while can be reduced again
The replacement cost of two membrane filter units 2.
The reverse osmosis filter element device of the dual-membrane type is provided with the first membrane filter unit 1 and the second membrane filter unit 2, the first film
Filter element 1 and the second membrane filter unit 2 are with piping connection.In operating condition, obtained through the processing of the first membrane filter unit 1
Concentrated water A is further processed using the second membrane filter unit 2, so as to improve pure water/concentrated water ratio, reduces the wave of water resource
Take.The reverse osmosis filter element device of dual-membrane type of the present invention is from rear based on reverse osmosis filter core by two independent membrane filter units simultaneously
The case where holding first fouling, so user only needs replacing the second membrane filter unit 2, without the first film mistake for going replacement not fail
Unit 1 is filtered, therefore replacement cost can be substantially reduced.
Embodiment 2.
A kind of reverse osmosis filter element device of dual-membrane type, as shown in Figures 3 and 4, other features are same as Example 1, difference
It is: is additionally provided with pump element 4, pump element 4 is respectively with the first membrane filter unit 1 and the second film unit with piping connection；
In operating condition, raw water enters the first membrane filter unit 1 by the pressurization of pump element 4, and the first membrane filter unit 1 is logical
It crosses processing and obtains pure water A and concentrated water A, concentrated water A enters the second membrane filter unit 2, and the second membrane filter unit 2 is obtained pure by processing
Water B and concentrated water B, pure water B and raw water are converged enters the first membrane filter unit 1 after the pressurization of pump element 4, and dual-membrane type is discharged in pure water A
Reverse osmosis filter element device, concentrated water B and concentrated water A converge the discharge reverse osmosis filter element device of dual-membrane type；
When rinsing operating condition, raw water enters the second membrane filter unit 2 by the pressurization of pump element 4, and the second membrane filter unit 2 is logical
It crosses processing and obtains pure water A and concentrated water A, pure water A enters the first membrane filter unit 1, and the first membrane filter unit 1 is obtained dense by processing
Water B, concentrated water B and raw water, which are converged, enters the second membrane filter unit 2 through pump element 4, and the reverse osmosis filter core dress of dual-membrane type is discharged in concentrated water A
It sets.
Compared with Example 1, the present embodiment, which increases pump element 4, can increase pressure, improve water speed processed.
Embodiment 3.
A kind of reverse osmosis filter element device of dual-membrane type, as it can be seen in figures 5 and 6, other features are same as Example 2, difference
It is: is additionally provided with scale inhibition unit 3, scale inhibition unit 3 and pump element 4 are with piping connection.
In operating condition, raw water obtains raw water A by the processing of scale inhibition unit 3, and raw water A enters by the pressurization of pump element 4
First membrane filter unit 1, the first membrane filter unit 1 obtain pure water A and concentrated water A by processing, and it is single that concentrated water A enters the filtering of the second film
Member 2, the second membrane filter unit 2 obtain pure water B and concentrated water B by processing, pure water B and raw water A converge be pressurized through pump element 4 it is laggard
Enter the first membrane filter unit 1, the reverse osmosis filter element device of dual-membrane type is discharged in pure water A, and it is anti-that concentrated water B and concentrated water A converge discharge dual-membrane type
Permeate filter element device.
When rinsing operating condition, raw water obtains raw water A by the processing of scale inhibition unit 3, and raw water A enters by the pressurization of pump element 4
Second membrane filter unit 2, the second membrane filter unit 2 obtain pure water A and concentrated water A by processing, and it is single that pure water A enters the filtering of the first film
Member 1, the first membrane filter unit 1 by processing obtain concentrated water B, concentrated water B and raw water A converge through pump element 4 enter the second film filtering
The reverse osmosis filter element device of dual-membrane type is discharged in unit 2, concentrated water A.
The effect of scale inhibition unit 3 of the invention is to guarantee the water quality of raw water, is maintained at split type reverse osmosis filter element device
It can also be stable under high purity water/concentrated water ratio.
Embodiment 4.
A kind of reverse osmosis filter element device of dual-membrane type, as shown in FIG. 7 and 8, other features are same as Example 2, difference
It is: is additionally provided with scale inhibition unit 3, scale inhibition unit 3 filters with respectively with pump element 4, the first membrane filter unit 1 and the second film single
Member 2 is with piping connection.
In operating condition, raw water obtains raw water A by the processing of scale inhibition unit 3, and raw water A enters by the pressurization of pump element 4
First membrane filter unit 1, the first membrane filter unit 1 obtain pure water A and concentrated water A by processing, and it is single that concentrated water A enters the filtering of the second film
Member 2, the second membrane filter unit 2 obtain pure water B and concentrated water B by processing；Pure water B and raw water are converged after the processing of scale inhibition unit 3,
It is pressurized again through pump element 4, finally enters the first membrane filter unit 1；Pure water A be discharged the reverse osmosis filter element device of dual-membrane type, concentrated water B and
Concentrated water A converges the discharge reverse osmosis filter element device of dual-membrane type.
When rinsing operating condition, raw water obtains raw water A by the processing of scale inhibition unit 3, and raw water A enters by the pressurization of pump element 4
Second membrane filter unit 2, the second membrane filter unit 2 obtain pure water A and concentrated water A by processing, and it is single that pure water A enters the filtering of the first film
Member 1, the first membrane filter unit 1 obtain concentrated water B by processing；Concentrated water B and raw water are converged after the processing of scale inhibition unit 3, then through pumping
Element 4 is pressurized, and finally enters the second membrane filter unit 2；The reverse osmosis filter element device of dual-membrane type is discharged in concentrated water A.
The effect of scale inhibition unit 3 of the invention is to guarantee the water quality of raw water, is maintained at split type reverse osmosis filter element device
It can also be stable under high purity water/concentrated water ratio.
Embodiment 5.
A kind of water purifier has the reverse osmosis filter element device of dual-membrane type and water purifier main body such as embodiment 1, dual-membrane type reverse osmosis
Diafiltration core apparatus is assemblied in water purifier main body.
It should be noted that water purifier main structure is known to the skilled person common sense, it is not the main of the application
Inventive point.Water purifier main structure in the prior art is suitable for as the water purifier main body in the application, and details are not described herein.
In operating condition, raw water enters the first membrane filter unit 1, and the first membrane filter unit 1 obtains pure water A by processing
Enter the second membrane filter unit 2 with concentrated water A, concentrated water A, the second membrane filter unit 2 obtains pure water B and concentrated water B, pure water by processing
B and raw water are converged into the first membrane filter unit 1, and water purifier is discharged in pure water A, and water purifier is discharged in concentrated water B.
For water purifier when rinsing operating condition, raw water enters the second membrane filter unit 2, and the second membrane filter unit 2 is by handling
Enter the first membrane filter unit 1 to pure water A and concentrated water A, concentrated water A, the first membrane filter unit 1 obtains concentrated water B, concentrated water by processing
B and raw water are converged into the second membrane filter unit 2, and water purifier is discharged in concentrated water A.
The water purifier is provided with the reverse osmosis filter element device of dual-membrane type as described above and water purifier main body, dual-membrane type reverse osmosis
Diafiltration core apparatus is assemblied in water purifier main body.The water purification function is not influencing under there is producing water water quality in the membrane component service life, improve pure water/
Concentrated water ratio.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should be managed
Solution, can be with modifying or equivalently replacing the technical solution of the present invention, without departing from the essence and model of technical solution of the present invention
It encloses.
Claims (11)
1. a kind of reverse osmosis filter element device of dual-membrane type, it is characterised in that: it is provided with the first membrane filter unit and the filtering of the second film is single
Member, the first membrane filter unit and the second membrane filter unit are with piping connection；
In operating condition, raw water enters the first membrane filter unit, and the first membrane filter unit obtains pure water A and concentrated water by processing
A, concentrated water A enter the second membrane filter unit, and the second membrane filter unit obtains pure water B and concentrated water B, pure water B and raw water by processing
Converge and enter the first membrane filter unit, the reverse osmosis filter element device of dual-membrane type is discharged in pure water A, and dual-membrane type reverse osmosis diafiltration is discharged in concentrated water B
Core apparatus；
Pure water/concentrated water ratio when by operating condition is defined as C, and there are C > 2:1.
2. the reverse osmosis filter element device of dual-membrane type according to claim 1, it is characterised in that: when rinsing operating condition, raw water into
Enter the second membrane filter unit, the second membrane filter unit obtains pure water A and concentrated water A by processing, and it is single that pure water A enters the filtering of the first film
Member, the first membrane filter unit obtain concentrated water B by processing, and concentrated water B and raw water are converged into the second membrane filter unit, concentrated water A row
The reverse osmosis filter element device of dual-membrane type out.
3. the reverse osmosis filter element device of dual-membrane type according to claim 1, it is characterised in that: by the mistake of the first membrane filter unit
Effect duration is defined as E1, the failure duration of the second membrane filter unit is defined as E2, there are E1> E2。
4. the reverse osmosis filter element device of dual-membrane type according to claim 1, it is characterised in that: the C >=3:1.
5. the reverse osmosis filter element device of dual-membrane type according to claim 4, it is characterised in that: the C >=4:1.
6. the reverse osmosis filter element device of dual-membrane type according to claim 1, it is characterised in that: by the production of the first membrane filter unit
Water is defined as D1, the water yield of the second membrane filter unit is defined as D2, there are D1≥D2。
7. the reverse osmosis filter element device of dual-membrane type according to claim 2, it is characterised in that: be additionally provided with pump element, pump member
Part is respectively with the first membrane filter unit and the second film unit with piping connection；
In operating condition, raw water enters the first membrane filter unit by pump element pressurization, and the first membrane filter unit passes through processing
Obtain pure water A and concentrated water A, concentrated water A enters the second membrane filter unit, and the second membrane filter unit obtains pure water B and dense by processing
Water B, pure water B and raw water are converged and enter the first membrane filter unit after pump element is pressurized, and the reverse osmosis filter core of dual-membrane type is discharged in pure water A
Device, concentrated water B and concentrated water A converge the discharge reverse osmosis filter element device of dual-membrane type；
When rinsing operating condition, raw water enters the second membrane filter unit by pump element pressurization, and the second membrane filter unit passes through processing
Pure water A and concentrated water A are obtained, pure water A enters the first membrane filter unit, and the first membrane filter unit obtains concentrated water B, concentrated water by processing
B and raw water, which are converged, enters the second membrane filter unit through pump element, and the reverse osmosis filter element device of dual-membrane type is discharged in concentrated water A.
8. the reverse osmosis filter element device of dual-membrane type according to claim 7, it is characterised in that: be additionally provided with scale inhibition unit, hinder
Dirty unit and pump element are with piping connection；
In operating condition, raw water obtains raw water A by scale inhibition cell processing, and raw water A enters the first film by pump element pressurization
Filter element, the first membrane filter unit obtain pure water A and concentrated water A by processing, and concentrated water A enters the second membrane filter unit, and second
Membrane filter unit obtains pure water B and concentrated water B by processing, and pure water B and raw water A converge enters the first film mistake after pump element is pressurized
Unit is filtered, the reverse osmosis filter element device of dual-membrane type is discharged in pure water A, and concentrated water B and concentrated water A converge the reverse osmosis filter core dress of discharge dual-membrane type
It sets；
When rinsing operating condition, raw water obtains raw water A by scale inhibition cell processing, and raw water A enters the second film by pump element pressurization
Filter element, the second membrane filter unit obtain pure water A and concentrated water A by processing, and pure water A enters the first membrane filter unit, and first
Membrane filter unit obtains concentrated water B, concentrated water B and raw water A by processing and converges through pump element into the second membrane filter unit, concentrated water A
The reverse osmosis filter element device of dual-membrane type is discharged.
9. the reverse osmosis filter element device of dual-membrane type according to claim 7, it is characterised in that: be additionally provided with scale inhibition unit, hinder
Dirty unit with respectively with pump element, the first membrane filter unit and the second membrane filter unit with piping connection；
In operating condition, raw water obtains raw water A by scale inhibition cell processing, and raw water A enters the first film by pump element pressurization
Filter element, the first membrane filter unit obtain pure water A and concentrated water A by processing, and concentrated water A enters the second membrane filter unit, and second
Membrane filter unit obtains pure water B and concentrated water B by processing；Pure water B and raw water are converged after scale inhibition cell processing, then through pump element
Pressurization, finally enters the first membrane filter unit；The reverse osmosis filter element device of dual-membrane type is discharged in pure water A, and concentrated water B and concentrated water A converge row
The reverse osmosis filter element device of dual-membrane type out；
When rinsing operating condition, raw water obtains raw water A by scale inhibition cell processing, and raw water A enters the second film by pump element pressurization
Filter element, the second membrane filter unit obtain pure water A and concentrated water A by processing, and pure water A enters the first membrane filter unit, and first
Membrane filter unit obtains concentrated water B by processing；Concentrated water B and raw water are converged after scale inhibition cell processing, then are pressurized through pump element, most
Enter the second membrane filter unit afterwards；The reverse osmosis filter element device of dual-membrane type is discharged in concentrated water A.
10. the reverse osmosis filter element device of dual-membrane type according to claim 1, it is characterised in that: be additionally provided with proportioning valve, ratio
Valve and the second membrane filter unit are with piping connection and positioned at the production water side of the second membrane filter unit.
11. a kind of water purifier, it is characterised in that: setting is reverse osmosis just like dual-membrane type described in claims 1 to 10 any one
Filter element device and water purifier main body, the reverse osmosis filter element device of dual-membrane type are assemblied in water purifier main body；
In operating condition, raw water enters the first membrane filter unit, and the first membrane filter unit obtains pure water A and concentrated water by processing
A, concentrated water A enter the second membrane filter unit, and the second membrane filter unit obtains pure water B and concentrated water B, pure water B and raw water by processing
Converge and enter the first membrane filter unit, water purifier is discharged in pure water A, and water purifier is discharged in concentrated water B.
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