CN110498480B - Split type reverse osmosis filter element device and purifier - Google Patents
Split type reverse osmosis filter element device and purifier Download PDFInfo
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- CN110498480B CN110498480B CN201910895931.5A CN201910895931A CN110498480B CN 110498480 B CN110498480 B CN 110498480B CN 201910895931 A CN201910895931 A CN 201910895931A CN 110498480 B CN110498480 B CN 110498480B
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 133
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 485
- 239000012528 membrane Substances 0.000 claims abstract description 92
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 238000005374 membrane filtration Methods 0.000 claims description 189
- 239000012141 concentrate Substances 0.000 claims description 39
- 230000005764 inhibitory process Effects 0.000 claims description 30
- 238000007599 discharging Methods 0.000 claims description 15
- 238000005406 washing Methods 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 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
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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
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A split type reverse osmosis filter element device is provided with a first membrane filter unit and a second membrane filter unit, wherein the first membrane filter unit and the second membrane filter unit are connected through a pipeline. And in the operating condition, one part of the concentrated water treated by the first membrane filtering unit is further treated by the second membrane filtering unit, and the other part of the concentrated water is directly discharged, so that the pure water/concentrated water ratio can be improved, and the waste of water resources is reduced. The proportion of the two parts of concentrated water is regulated by the valve body and the flowmeter. Meanwhile, the split type reverse osmosis filter element device is formed by two independent membrane filter units, and the reverse osmosis filter element is based on the condition that the reverse osmosis filter element is firstly scaled from the rear end, so that a user only needs to replace the second membrane filter unit, and does not need to replace the first membrane filter unit which is not failed, and the replacement cost can be greatly reduced. A water purifier can improve the ratio of pure water to concentrated water without affecting the life of a membrane element and the quality of produced water.
Description
Technical Field
The invention relates to the field of reverse osmosis filter elements, in particular to a split type reverse osmosis filter element device and a water purifier.
Background
In the reverse osmosis filter element technology in the prior art, the pure water/concentrated water ratio is adjusted to be 1:1 or 2:1 for the most part, and the pure water/concentrated water ratio can cause waste of water resources. However, if the pure water/concentrated water ratio is directly increased in the existing reverse osmosis technology, the service life of the membrane element is reduced, and the quality of produced water is also reduced.
Therefore, in order to solve the defects in the prior art, it is necessary to provide a split type reverse osmosis filter element device and a water purifier.
Disclosure of Invention
One of the purposes of the present invention is to provide a split reverse osmosis filter element device that avoids the deficiencies of the prior art. The split reverse osmosis filter element device can improve the pure water/concentrated water ratio under the condition that the service life of the membrane element is not influenced and the water quality of produced water is improved.
The above object of the present invention is achieved by the following technical measures:
the split type reverse osmosis filter element device is provided with a first membrane filter unit, a second membrane filter unit and a filter unit for regulating concentrated water A 1 With concentrated water A 2 Proportional valve body, first membrane filter unit and second membrane filter unitThe valve body is connected with the first membrane filtration unit through a pipeline, and is positioned on the concentrate side of the first membrane filtration unit and on the water inlet side of the second membrane filtration unit.
During the operation condition, the raw water enters a first membrane filtration unit, and the first membrane filtration unit obtains pure water A and concentrated water A through treatment 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filter unit, pure water B and concentrated water B are obtained by treatment of the second membrane filter unit, the pure water B and raw water are converged and enter the first membrane filter unit, the pure water A is discharged out of the split type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are discharged out of the split type reverse osmosis filter element device 2 And merging and discharging the water from the split type reverse osmosis filter element device.
The pure water/concentrate ratio at operating conditions is defined as C, where C > 2:1.
the split type reverse osmosis filter element device is further provided with a flowmeter for measuring the flow of the pure water B, and the flowmeter is respectively connected with the second membrane filter unit and the first membrane filter unit through pipelines and is positioned on the pure water side of the second membrane filter unit.
The flow rate of pure water B is defined as beta, and the water yield of the first membrane filtration unit is defined as D 1 。
When beta > alpha D 1 When in use, the water A is concentrated 2 Equal to 0ml/min, concentrated water A 1 Greater than 0ml/min.
When beta is less than or equal to alpha D 1 When in use, the water A is concentrated 2 And concentrate A 1 Are all greater than 0ml/min.
Alpha and D 1 Are positive numbers.
Preferably, the above 5% is not more than 25% of a.
Preferably, the a is 10%.
The split type reverse osmosis filter element device is also provided with a device for metering the concentrated water A 1 And concentrate A 2 The flowmeter is connected with the second membrane filtration unit and the first membrane filtration unit through pipelines respectively and is positioned on the concentrated water side of the first membrane filtration unit.
Concentrated water A 1 And concentrate A 2 Delta is defined for the total flow rate of the first membrane filtration unit, and D is defined for the water yield of the first membrane filtration unit 1 。
When delta > epsilon D 1 When in use, the water A is concentrated 2 Equal to 0ml/min, concentrated water A 1 Greater than 0ml/min.
When delta is less than or equal to epsilon D 1 When in use, the water A is concentrated 2 And concentrate A 1 Are all greater than 0ml/min.
Epsilon and D 1 Are positive numbers.
Preferably, the content of epsilon is more than or equal to 10% and less than or equal to 50%.
Preferably, the epsilon is 33%.
The split type reverse osmosis filter element device is further provided with a prompt control device, and the prompt control device is respectively and electrically connected with the flowmeter and the valve body.
Prompt control device for judging beta and alpha D 1 Is of a size of (2); opening or closing the valve body; the user is prompted to replace the second membrane filtration unit.
The split type reverse osmosis filter element device is further provided with a prompt control device, and the prompt control device is respectively and electrically connected with the flowmeter and the valve body.
Prompt control device for judging delta and epsilon D 1 Is of a size of (2); opening or closing the valve body; the user is prompted to replace the second membrane filtration unit.
And when the washing working condition is adopted, raw water enters a second membrane filtration unit, pure water A and concentrated water A are obtained through treatment by the second membrane filtration unit, pure water A enters a first membrane filtration unit, concentrated water B is obtained through treatment by the first membrane filtration unit, the concentrated water B and the raw water are converged and enter the second membrane filtration unit, and the concentrated water A is discharged out of the split-type reverse osmosis filter element device.
Defining the failure time of the first membrane filtration unit as E 1 Defining the failure time of the second membrane filtration unit as E 2 In the presence of E 1 ＞E 2 。
Preferably, the above C is not less than 4:1.
the water yield of the first membrane filtration unit is defined as D 1 The water yield of the second membrane filtration unit is defined as D 2 In the presence of D 1 ≥D 2 。
The split type reverse osmosis filter element device is further provided with a pump element, and the pump element is connected with the first membrane filter unit and the second membrane unit through pipelines respectively.
In the operating condition, raw water is pressurized by a pump element and enters a first membrane filtration unit, and the first membrane filtration unit obtains pure water A and concentrated water A through treatment 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filter unit, pure water B and concentrated water B are obtained through treatment by the second membrane filter unit, the pure water B and the raw water are converged, pressurized by a pump element and then enter the first membrane filter unit, the pure water A is discharged out of the split type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are discharged out of the split type reverse osmosis filter element device 2 And merging and discharging the water from the split type reverse osmosis filter element device.
And when the washing working condition is met, raw water is pressurized through the pump element and enters the second membrane filtration unit, the second membrane filtration unit obtains pure water A and concentrated water A through treatment, the pure water A enters the first membrane filtration unit, the first membrane filtration unit obtains concentrated water B through treatment, the concentrated water B and the raw water are converged and enter the second membrane filtration unit through the pump element, and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
The split type reverse osmosis filter element device is further provided with a scale inhibition unit, and the scale inhibition unit is connected with the pump element through a pipeline.
In the operating condition, raw water is treated by the scale inhibition unit to obtain raw water A, the raw water A is pressurized by the pump element and enters the first membrane filtration unit, and the first membrane filtration unit is treated to obtain pure water A and concentrated water A 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filter unit, pure water B and concentrated water B are obtained through treatment by the second membrane filter unit, the pure water B and the raw water A are converged and pressurized by a pump element and then enter the first membrane filter unit, the pure water A is discharged out of the split type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are discharged out of the split type reverse osmosis filter element device 2 And merging and discharging the water from the split type reverse osmosis filter element device.
And when the washing working condition is met, raw water is treated by the scale inhibition unit to obtain raw water A, the raw water A is pressurized by the pump element and enters the second membrane filtration unit, the second membrane filtration unit is treated to obtain pure water A and concentrated water A, the pure water A enters the first membrane filtration unit, the first membrane filtration unit is treated to obtain concentrated water B, the concentrated water B and the raw water A are converged and enter the second membrane filtration unit through the pump element, and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
The split type reverse osmosis filter element device is further provided with a scale inhibition unit, and the scale inhibition unit is connected with the pump element, the first membrane filtration unit and the second membrane filtration unit through pipelines respectively.
In the operating condition, raw water is treated by the scale inhibition unit to obtain raw water A, the raw water A is pressurized by the pump element and enters the first membrane filtration unit, and the first membrane filtration unit is treated to obtain pure water A and concentrated water A 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filtration unit, and pure water B and concentrated water B are obtained through treatment by the second membrane filtration unit; pure water B and raw water are converged and treated by the scale inhibition unit, pressurized by the pump element and finally enter the first membrane filtration unit; pure water A is discharged split type reverse osmosis filter element device, and dense water B and dense water A 2 And merging and discharging the water from the split type reverse osmosis filter element device.
In a flushing working condition, raw water is treated by a scale inhibition unit to obtain raw water A, the raw water A is pressurized by a pump element and enters a second membrane filtration unit, pure water A and concentrated water A are obtained by treatment of the second membrane filtration unit, pure water A enters a first membrane filtration unit, and concentrated water B is obtained by treatment of the first membrane filtration unit; the concentrated water B and the raw water are converged and treated by the scale inhibition unit, then pressurized by the pump element, and finally filtered by the second membrane filtration unit; and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
The split type reverse osmosis filter element device is further provided with a first flow limiting device, and the first flow limiting device is assembled on the water outlet side of the valve body.
Preferably, the first flow limiting device is a proportional control valve, a flow control valve or a waste water hole.
The split type reverse osmosis filter element device is further provided with a second flow limiting device, and the second flow limiting device is connected with the second membrane filter unit through a pipeline and is positioned on the concentrate side of the second membrane filter unit.
Preferably, the second flow limiting device is a proportional control valve, a flow control valve or a waste water hole.
The split type reverse osmosis filter element device is provided with a first membrane filter unit and a second membrane filter unit, and the first membrane filter unit is connected with the second membrane filter unit through a pipeline. And in the operating condition, one part of the concentrated water treated by the first membrane filtering unit is further treated by the second membrane filtering unit, and the other part of the concentrated water is directly discharged, so that the pure water/concentrated water ratio can be improved, and the waste of water resources is reduced. The proportion of the two parts of concentrated water is regulated by the valve body and the flowmeter. Meanwhile, the split type reverse osmosis filter element device is formed by two independent membrane filter units, and the reverse osmosis filter element is based on the condition that the reverse osmosis filter element is firstly scaled from the rear end, so that a user only needs to replace the second membrane filter unit, and does not need to replace the first membrane filter unit which is not failed, and the replacement cost can be greatly reduced.
Another object of the present invention is to provide a water purifier that avoids the drawbacks of the prior art. The water purifier can improve the pure water/concentrated water ratio under the condition that the service life of the membrane element is not influenced and the water quality of produced water is not influenced.
The above object of the present invention is achieved by the following technical measures:
the split type reverse osmosis filter element device is assembled on the water purifier main body.
During the operation condition, the raw water enters a first membrane filtration unit, and the first membrane filtration unit obtains pure water A and concentrated water A through treatment 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filter unit, pure water B and concentrated water B are obtained by treatment of the second membrane filter unit, the pure water B and raw water are converged and enter a first membrane filter unit, the pure water A is discharged out of the water purifier, and the concentrated water B and the concentrated water A are discharged out of the water purifier 2 And merging and discharging the water purifying machine.
The water purifier is provided with the split type reverse osmosis filter element device and the water purifier main body, and the split type reverse osmosis filter element device is assembled on the water purifier main body. The water purifier can improve the pure water/concentrated water ratio under the condition that the service life of the membrane element is not influenced and the water quality of produced water is not influenced.
Drawings
The invention is further illustrated by the accompanying drawings, which are not to be construed as limiting the invention in any way.
FIG. 1 is a schematic view of the split reverse osmosis filter cartridge device of example 1 illustrating the direction of water flow during operating conditions.
Fig. 2 is a schematic view of the water flow direction of the split reverse osmosis filter element device of example 1 under the flushing condition.
FIG. 3 is a schematic view of the split reverse osmosis filter cartridge device of example 2 illustrating the direction of water flow during operating conditions.
Fig. 4 is a schematic view of the water flow direction of the split reverse osmosis filter element device of example 2 under the flushing condition.
FIG. 5 is a schematic view of the split reverse osmosis filter cartridge device of example 3 illustrating the direction of water flow during operating conditions.
Fig. 6 is a schematic view of the water flow direction of a split reverse osmosis filter cartridge device of example 3 under a flushing condition.
FIG. 7 is a schematic view of the split reverse osmosis cartridge device of example 4 illustrating the direction of water flow during operating conditions.
Fig. 8 is a schematic view of the direction of water flow of a split reverse osmosis filter cartridge device of example 4 under flushing conditions.
FIG. 9 is a schematic view of the split reverse osmosis cartridge device of example 6 illustrating the direction of water flow during operating conditions.
FIG. 10 is a schematic view of the split reverse osmosis cartridge device of example 7 illustrating the direction of water flow during operating conditions.
In fig. 1 to 10, the method includes:
a first membrane filtration unit 1,
A second membrane filtration unit 2,
A scale inhibition unit 3,
A pump element 4,
A flow meter 5,
A valve body 6,
A first current limiting device 7,
A second flow restricting device 8.
Detailed Description
The technical scheme of the invention is further described with reference to the following examples.
Example 1.
A split type reverse osmosis filter element device is provided with a first membrane filter unit 1, a second membrane filter unit 2 and a device for adjusting concentrated water A as shown in figures 1 and 2 1 With concentrated water A 2 The valve body 6 of proportion, first membrane filtration unit 1 and second membrane filtration unit 2 are connected with the pipeline, and valve body and first membrane filtration unit 1 are connected with the pipeline, and valve body 6 is located the dense water side of first membrane filtration unit 1 and is located the intake side of second membrane filtration unit 2.
In the operating condition, raw water enters a first membrane filtration unit 1, and the first membrane filtration unit 1 obtains pure water A and concentrated water A through treatment 1 And concentrate A 2 Concentrated water A 1 The pure water enters a second membrane filter unit 2, the pure water B and the concentrated water B are obtained by treatment of the second membrane filter unit 2, the pure water B and the raw water are converged and enter the first membrane filter unit 1, the pure water A is discharged out of the split type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are discharged out of the split type reverse osmosis filter element device 2 And merging and discharging the water from the split type reverse osmosis filter element device.
The split type reverse osmosis filter element device of the invention defines the pure water/concentrated water ratio as C in the operation condition, and the C is more than 2:1. further preferred C.gtoreq.4: 1, the specific value of C in this embodiment is 4:1.
the split type reverse osmosis filter element device is further provided with a flowmeter 5 for measuring the flow of pure water B, and the flowmeter 5 is respectively connected with the second membrane filter unit 2 and the first membrane filter unit 1 through pipelines and is positioned on the pure water side of the second membrane filter unit 2.
The flow rate of pure water B is defined as beta, and the water yield of the first membrane filtration unit 1 is defined as D 1 。
When beta > alpha D 1 When in use, the water A is concentrated 2 Equal to 0ml/min, concentrated water A 1 Greater than 0ml/min. When beta is less than or equal to alpha D 1 When in use, the water A is concentrated 2 And concentrate A 1 Are all greater than 0ml/min. Alpha and D 1 Are positive numbers.
The invention opens the valve body 6 to make the concentrated water A 2 Greater than 0ml/min, the valve body 6 is closed to enable the concentrated water A to be 2 Equal to 0ml/min.
Because when beta is less than or equal to alpha D 1 Description will be given of the water producing ability of the second membrane filtration unit 2The force decreases, thus decreasing the concentrate A 1, 1 The flow rate, thereby acting as a protection for the first membrane filtration unit 1.
The preferred 5% or less and 25% or less of a is the invention, the a of this example is 10%.
When the washing working condition is adopted, raw water enters the second membrane filtration unit 2, pure water A and concentrated water A are obtained through treatment by the second membrane filtration unit 2, the pure water A enters the first membrane filtration unit 1, concentrated water B is obtained through treatment by the first membrane filtration unit 1, the concentrated water B and the raw water are converged and enter the second membrane filtration unit 2, and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
The invention defines the failure time of the first membrane filtration unit 1 as E 1 The failure time period of the second membrane filtration unit 2 is defined as E 2 In the presence of E 1 ＞E 2 . Since the second membrane filtration unit 2 of the invention is located at the rear end of the first membrane filtration unit 1. The second membrane filtration unit 2 is fouled earlier than the first membrane filtration unit 1, so the failure time of the second membrane filtration unit 2 is less than that of the first membrane filtration unit 1; so that the frequency of replacement of the second membrane filtration unit 2 is greater than the frequency of replacement of the first membrane filtration unit 1.
Many cases of membrane reverse osmosis cartridge failure are not overall failure, but rather blockage and scaling of the active area near the concentrate outlet section, resulting in a decrease in the water production capacity of the membrane element. The split type reverse osmosis filter element device is composed of two independent components, and based on the condition that the reverse osmosis filter element is firstly scaled from the rear end, a user only needs to replace the second membrane filter unit 2, and does not need to replace the first membrane filter unit 1 which is not failed, so that the replacement cost can be greatly reduced.
The invention defines the water yield of the first membrane filtration unit 1 as D 1 The water yield of the second membrane filtration unit 2 is defined as D 2 In the presence of D 1 ≥D 2 . D of the invention 2 May be D 1 The number of (2) may be any number of times, such as 0.5, 0.4, 0.3, 0.25, and 0.2, 1.0 or less, depending on the actual situation. The embodiment is specifically D 2 Is 0.2D 1 . According to a plurality of experiments, when0.2D 1 In this case, the cleaning of the first membrane filtration unit 1 can be effectively ensured, and the replacement cost of the second membrane filtration unit 2 can be reduced.
The split type reverse osmosis filter element device is provided with a first membrane filter unit 1 and a second membrane filter unit 2, and the first membrane filter unit 1 and the second membrane filter unit 2 are connected through pipelines. In the operating condition, a part of the concentrated water treated by the first membrane filtration unit 1 is further treated by the second membrane filtration unit 2, and the other part of the concentrated water is directly discharged, so that the pure water/concentrated water ratio can be improved, and the waste of water resources is reduced. The proportion of the two parts of concentrated water is regulated by the valve body 6 and the flowmeter 5. Meanwhile, the split type reverse osmosis filter element device is formed by two independent membrane filter units, and the reverse osmosis filter element is based on the condition that the reverse osmosis filter element is firstly scaled from the rear end, so that a user only needs to replace the second membrane filter unit 2, and does not need to replace the first membrane filter unit 1 which is not failed, and the replacement cost can be greatly reduced.
Example 2.
A split reverse osmosis cartridge device as shown in figures 3 and 4, with other features being the same as in example 1, except that: the split type reverse osmosis filter element device is further provided with a pump element 4, and the pump element 4 is respectively connected with the first membrane filtration unit 1 and the second membrane unit through pipelines;
in the operating condition, raw water is pressurized by the pump element 4 and enters the first membrane filtration unit 1, and the first membrane filtration unit 1 obtains pure water A and concentrated water A through treatment 1 And concentrate A 2 Concentrated water A 1 The pure water enters a second membrane filter unit 2, the second membrane filter unit 2 obtains pure water B and concentrated water B through treatment, the pure water B and the raw water are converged and pressurized by a pump element 4 and then enter a first membrane filter unit 1, pure water A is discharged out of a split type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are discharged out of the split type reverse osmosis filter element device 2 And merging and discharging the water from the split type reverse osmosis filter element device.
When the washing working condition is adopted, raw water is pressurized through the pump element 4 and enters the second membrane filter unit 2, the second membrane filter unit 2 is treated to obtain pure water A and concentrated water A, the pure water A enters the first membrane filter unit 1, the first membrane filter unit 1 is treated to obtain concentrated water B, the concentrated water B and the raw water are converged and enter the second membrane filter unit 2 through the pump element 4, and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
In this embodiment, the pump element 4 is added to increase the pressure and the water production rate as compared with embodiment 1.
Example 3.
A split reverse osmosis cartridge device as shown in fig. 5 and 6, other features are the same as in example 2, except that: the split type reverse osmosis filter element device is further provided with a scale inhibition unit 3, and the scale inhibition unit 3 is connected with a pump element 4 through a pipeline.
In the operating condition, raw water is treated by the scale inhibition unit 3 to obtain raw water A, the raw water A is pressurized by the pump element 4 and enters the first membrane filtration unit 1, and the first membrane filtration unit 1 is treated to obtain pure water A and concentrated water A 1 And concentrate A 2 Concentrated water A 1 The pure water enters a second membrane filter unit 2, pure water B and concentrated water B are obtained by treatment of the second membrane filter unit 2, the pure water B and the raw water A are converged and pressurized by a pump element 4 and then enter a first membrane filter unit 1, the pure water A is discharged from a split type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are discharged from the split type reverse osmosis filter element device 2 And merging and discharging the water from the split type reverse osmosis filter element device.
When the washing working condition is adopted, raw water is treated by the scale inhibition unit 3 to obtain raw water A, the raw water A is pressurized by the pump element 4 and enters the second membrane filtration unit 2, the second membrane filtration unit 2 is treated to obtain pure water A and concentrated water A, the pure water A enters the first membrane filtration unit 1, the first membrane filtration unit 1 is treated to obtain concentrated water B, the concentrated water B and the raw water A are converged and enter the second membrane filtration unit 2 by the pump element 4, and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
The scale inhibition unit 3 of the invention has the function of ensuring the quality of raw water, so that the split type reverse osmosis filter element device can be stably operated under the high pure water/concentrated water ratio.
Example 4.
A split reverse osmosis cartridge device as shown in fig. 7 and 8, with the other features being the same as in example 2, except that: the split type reverse osmosis filter element device is further provided with a scale inhibition unit 3, and the scale inhibition unit 3 is connected with a pump element 4, a first membrane filtration unit 1 and a second membrane filtration unit 2 through pipelines respectively.
In the operating condition, raw water is treated by the scale inhibition unit 3 to obtain raw water A, the raw water A is pressurized by the pump element 4 and enters the first membrane filtration unit 1, and the first membrane filtration unit 1 is treated to obtain pure water A and concentrated water A 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filtration unit 2, and the second membrane filtration unit 2 is treated to obtain pure water B and concentrated water B; pure water B and raw water are converged and treated by the scale inhibition unit 3, pressurized by the pump element 4 and finally enter the first membrane filtration unit 1; pure water A is discharged split type reverse osmosis filter element device, and dense water B and dense water A 2 And merging and discharging the water from the split type reverse osmosis filter element device.
In a flushing working condition, raw water is treated by a scale inhibition unit 3 to obtain raw water A, the raw water A is pressurized by a pump element 4 and enters a second membrane filtration unit 2, pure water A and concentrated water A are obtained by treatment of the second membrane filtration unit 2, the pure water A enters a first membrane filtration unit 1, and concentrated water B is obtained by treatment of the first membrane filtration unit 1; the concentrated water B and the raw water are converged and treated by the scale inhibition unit 3, then pressurized by the pump element 4, and finally filtered by the second membrane filtration unit 2; and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
Example 5.
A split reverse osmosis cartridge device having the same other features as in example 1, except that: a prompt control device is also arranged and is respectively and electrically connected with the flowmeter 5 and the valve body 6.
Prompt control device for judging beta and alpha D 1 Is of a size of (2); opening or closing the valve body 6; the user is prompted to replace the second membrane filtration unit 2.
The operation of the prompt control device is as follows:
prompt control device judges beta and alpha D 1 Is of the size of (a) when beta > alpha D 1 When the valve is in the closed state, the prompt control device controls the valve body 6 to enable the concentrated water A to be 2 Equal to 0ml/min, concentrated water A 1 Greater than 0ml/min; when beta is less than or equal to alpha D 1 When in use, the prompt control device controls the valve body 6 to be opened so as to enable the concentrated water A to be 2 And concentrate A 1 Are greater than 0ml/min, and the user is prompted to replace the second membrane filtration unit 2.
Compared with the embodiment 1, the valve body 6 can be opened or closed in time to protect the first membrane filtration unit 1, and a user can be prompted to replace the second membrane filtration unit 2, so that the operation stability of the split type reverse osmosis filter element device is protected.
Example 6.
A split reverse osmosis cartridge device as shown in fig. 9, other features are the same as those of embodiment 1, except that: is also provided with a device for metering the concentrated water A 1 And concentrate A 2 The flowmeter is connected with the second membrane filtration unit and the first membrane filtration unit through pipelines respectively and is positioned on the concentrated water side of the first membrane filtration unit.
Concentrated water A 1 And concentrate A 2 Delta is defined for the total flow rate of the first membrane filtration unit, and D is defined for the water yield of the first membrane filtration unit 1 。
When delta > epsilon D 1 When in use, the water A is concentrated 2 Equal to 0ml/min, concentrated water A 1 Greater than 0ml/min. When delta is less than or equal to epsilon D 1 When in use, the water A is concentrated 2 And concentrate A 1 Are all greater than 0ml/min. Epsilon and D 1 Are positive numbers.
The invention opens the valve body 6 to make the concentrated water A 2 Greater than 0ml/min, the valve body 6 is closed to enable the concentrated water A to be 2 Equal to 0ml/min.
Because when delta is less than or equal to epsilon D 1 At this time, it is explained that the water production capacity of the second membrane filtration unit 2 is lowered, thereby lowering the concentrate a 1 Thereby serving to protect the first membrane filtration unit 1.
The preferred epsilon is more than or equal to 10% and less than or equal to 50%, and epsilon in the embodiment is 33%.
This embodiment increases the flexibility of the assembly of the flowmeter as compared to embodiment 1. Example 7.
A split reverse osmosis cartridge device having the same other features as in example 6, except that: the valve is also provided with a prompt control device which is respectively and electrically connected with the flowmeter and the valve body.
Prompt control device for judging delta and epsilon D 1 Is of a size of (2); opening or closing the valve body; prompting the userThe second membrane filtration unit is replaced.
The operation of the prompt control device is as follows:
prompt control device judges delta and epsilon D 11 When delta > epsilon D 1 When the valve is in the closed state, the prompt control device controls the valve body 6 to enable the concentrated water A to be 2 Equal to 0ml/min, concentrated water A 1 Greater than 0ml/min; when delta is less than or equal to epsilon D 1 When in use, the prompt control device controls the valve body 6 to be opened so as to enable the concentrated water A to be 2 And concentrate A 1 Are greater than 0ml/min, and the user is prompted to replace the second membrane filtration unit 2.
Compared with the embodiment 1, the valve body 6 can be opened or closed in time to protect the first membrane filtration unit 1, and a user can be prompted to replace the second membrane filtration unit 2, so that the operation stability of the split type reverse osmosis filter element device is protected.
Example 8.
As shown in fig. 10, the split type reverse osmosis filter element device of this embodiment is further provided with a first flow limiting device 7, and the first flow limiting device 7 is assembled on the water outlet side of the valve body 6.
Meanwhile, the split type reverse osmosis filter element device of the embodiment is further provided with a second flow limiting device 8, and the second flow limiting device 8 is connected with the second membrane filtration unit 2 through a pipeline and is positioned on the concentrate side of the second membrane filtration unit 2.
The first restriction 7 of the present invention may be a proportional control valve, a flow control valve or a waste water orifice. The first flow restriction device 7 of this embodiment is embodied as a waste water hole. The second restriction 8 of the present invention may be a proportional control valve, a flow control valve or a waste water orifice. The second flow restriction 8 of the present embodiment is in particular a proportional control valve.
The second flow restriction 8 of the present invention serves to regulate the pure water/concentrate ratio. The first flow-limiting device 7 is used for concentrating water A 2 And performing current limiting.
Example 9.
A water purifier having the split type reverse osmosis cartridge device of embodiment 1 and a water purifier body to which the split type reverse osmosis cartridge device is assembled.
It should be noted that the main structure of the water purifier is common knowledge of those skilled in the art, and is not a main point of the present application. The main structure of the water purifier in the prior art is suitable for being used as the main body of the water purifier in the application, and is not repeated here.
In the operating condition, raw water enters a first membrane filtration unit 1, and the first membrane filtration unit 1 obtains pure water A and concentrated water A through treatment 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filter unit 2, pure water B and concentrated water B are obtained by treatment of the second membrane filter unit 2, the pure water B and the raw water are converged and enter a first membrane filter unit 1, the pure water A is discharged out of the water purifier, and the concentrated water B and the concentrated water A are discharged out of the water purifier 2 And merging and discharging the water purifying machine.
When the washing working condition is adopted, raw water enters the second membrane filtration unit 2, pure water A and concentrated water A are obtained through treatment by the second membrane filtration unit 2, the pure water A enters the first membrane filtration unit 1, concentrated water B is obtained through treatment by the first membrane filtration unit 1, the concentrated water B and the raw water are converged and enter the second membrane filtration unit 2, and the concentrated water A is discharged out of the water purifier.
The water purifier is provided with the split type reverse osmosis filter element device and the water purifier main body, and the split type reverse osmosis filter element device is assembled on the water purifier main body. The water purifier can improve the pure water/concentrated water ratio under the condition that the service life of the membrane element is not influenced and the water quality of produced water is not influenced.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (19)
1. A split reverse osmosis filter element device, which is characterized in that: is provided with a first membrane filtration unit, a second membrane filtration unit and a device for adjusting the concentrated water A 1 With concentrated water A 2 The valve body of proportion, first membrane filtration unit and second membrane filtration unit are connected with pipeline, valve body and first membrane filtration unit are connected with pipeline, and the valveThe body is positioned on the concentrated water side of the first membrane filtration unit and on the water inlet side of the second membrane filtration unit;
during the operation condition, the raw water enters a first membrane filtration unit, and the first membrane filtration unit obtains pure water A and concentrated water A through treatment 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filter unit, pure water B and concentrated water B are obtained by treatment of the second membrane filter unit, the pure water B and raw water are converged and enter the first membrane filter unit, the pure water A is discharged out of the split type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are discharged out of the split type reverse osmosis filter element device 2 Converging and discharging the split type reverse osmosis filter element device;
the pure water/concentrate ratio at operating conditions is defined as C, where C > 2:1, a step of;
the flow meter is respectively connected with the second membrane filtration unit and the first membrane filtration unit through pipelines and is positioned on the pure water side of the second membrane filtration unit;
the flow rate of pure water B is defined as beta, and the water yield of the first membrane filtration unit is defined as D 1 ；
When beta > alpha D 1 When in use, the water A is concentrated 2 Equal to 0ml/min, concentrated water A 1 Greater than 0ml/min;
when beta is less than or equal to alpha D 1 When in use, the water A is concentrated 2 And concentrate A 1 Are all larger than 0ml/min;
alpha and D 1 Are positive numbers;
or alternatively
Is also provided with a device for metering the concentrated water A 1 And concentrate A 2 The flowmeter is respectively connected with the second membrane filtration unit and the first membrane filtration unit through pipelines and is positioned on the concentrated water side of the first membrane filtration unit;
concentrated water A 1 And concentrate A 2 Delta is defined for the total flow of the first membrane filtration unit, and the water yield is defined as D 1 ；
When delta > epsilon D 1 When in use, the water A is concentrated 2 Equal to 0ml/min, concentrated water A 1 Greater than 0ml/min;
when delta is less than or equal to epsilon D 1 When in use, the water A is concentrated 2 And concentrate A 1 Are all larger than 0ml/min;
epsilon and D 1 Are positive numbers.
2. A split reverse osmosis cartridge device according to claim 1, wherein: alpha is more than or equal to 5% and less than or equal to 25%.
3. The split reverse osmosis cartridge device of claim 2, wherein: the alpha is 10 percent.
4. A split reverse osmosis cartridge device according to claim 1, wherein: epsilon is more than or equal to 10 percent and less than or equal to 50 percent.
5. A split reverse osmosis cartridge device according to claim 1, wherein: the epsilon was 33%.
6. A split reverse osmosis cartridge device according to claim 3, wherein: the valve is also provided with a prompt control device which is respectively and electrically connected with the flowmeter and the valve body;
prompt control device for judging beta and alpha D 1 Is of a size of (2); opening or closing the valve body; the user is prompted to replace the second membrane filtration unit.
7. A split reverse osmosis cartridge device according to claim 1, wherein: the valve is also provided with a prompt control device which is respectively and electrically connected with the flowmeter and the valve body;
prompt control device for judging delta and epsilon D 1 Is of a size of (2); opening or closing the valve body; the user is prompted to replace the second membrane filtration unit.
8. A split reverse osmosis cartridge device according to claim 1, wherein: and when the washing working condition is adopted, raw water enters a second membrane filtration unit, pure water A and concentrated water A are obtained through treatment by the second membrane filtration unit, pure water A enters a first membrane filtration unit, concentrated water B is obtained through treatment by the first membrane filtration unit, the concentrated water B and the raw water are converged and enter the second membrane filtration unit, and the concentrated water A is discharged out of the split-type reverse osmosis filter element device.
9. A split reverse osmosis cartridge device according to claim 1, wherein: defining the failure time of the first membrane filtration unit as E 1 Defining the failure time of the second membrane filtration unit as E 2 In the presence of E 1 ＞E 2 。
10. A split reverse osmosis cartridge device according to claim 1, wherein: c is more than or equal to 4:1.
11. a split reverse osmosis cartridge device according to claim 1, wherein: the water yield of the first membrane filtration unit is defined as D 1 The water yield of the second membrane filtration unit is defined as D 2 In the presence of D 1 ≥D 2 。
12. The split reverse osmosis cartridge device of claim 8, wherein: the pump element is respectively connected with the first membrane filtration unit and the second membrane unit through pipelines;
in the operating condition, raw water is pressurized by a pump element and enters a first membrane filtration unit, and the first membrane filtration unit obtains pure water A and concentrated water A through treatment 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filter unit, pure water B and concentrated water B are obtained through treatment by the second membrane filter unit, the pure water B and the raw water are converged, pressurized by a pump element and then enter the first membrane filter unit, the pure water A is discharged out of the split type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are discharged out of the split type reverse osmosis filter element device 2 Converging and discharging the split type reverse osmosis filter element device;
and when the washing working condition is met, raw water is pressurized through the pump element and enters the second membrane filtration unit, the second membrane filtration unit obtains pure water A and concentrated water A through treatment, the pure water A enters the first membrane filtration unit, the first membrane filtration unit obtains concentrated water B through treatment, the concentrated water B and the raw water are converged and enter the second membrane filtration unit through the pump element, and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
13. A split reverse osmosis cartridge device according to claim 12, wherein: the scale inhibition unit is connected with the pump element through a pipeline;
in the operating condition, raw water is treated by the scale inhibition unit to obtain raw water A, the raw water A is pressurized by the pump element and enters the first membrane filtration unit, and the first membrane filtration unit is treated to obtain pure water A and concentrated water A 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filter unit, pure water B and concentrated water B are obtained through treatment by the second membrane filter unit, the pure water B and the raw water A are converged and pressurized by a pump element and then enter the first membrane filter unit, the pure water A is discharged out of the split type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are discharged out of the split type reverse osmosis filter element device 2 Converging and discharging the split type reverse osmosis filter element device;
and when the washing working condition is met, raw water is treated by the scale inhibition unit to obtain raw water A, the raw water A is pressurized by the pump element and enters the second membrane filtration unit, the second membrane filtration unit is treated to obtain pure water A and concentrated water A, the pure water A enters the first membrane filtration unit, the first membrane filtration unit is treated to obtain concentrated water B, the concentrated water B and the raw water A are converged and enter the second membrane filtration unit through the pump element, and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
14. A split reverse osmosis cartridge device according to claim 12, wherein: the scale inhibition unit is connected with the pump element, the first membrane filtration unit and the second membrane filtration unit through pipelines respectively;
in the operating condition, raw water is treated by the scale inhibition unit to obtain raw water A, the raw water A is pressurized by the pump element and enters the first membrane filtration unit, and the first membrane filtration unit is treated to obtain pure water A and concentrated water A 1 And concentrate A 2 Concentrated water A 1 The water enters a second membrane filtration unit, and pure water B and concentrated water B are obtained through treatment by the second membrane filtration unit; pure water B and raw water are converged and treated by the scale inhibition unit, pressurized by the pump element and finally enter the first membrane filtration unit; pure water A is discharged split type reverse osmosis filter element device, and dense water B and dense water A 2 Converging and discharging split type reverse osmosis filter elementA device;
in a flushing working condition, raw water is treated by a scale inhibition unit to obtain raw water A, the raw water A is pressurized by a pump element and enters a second membrane filtration unit, pure water A and concentrated water A are obtained by treatment of the second membrane filtration unit, pure water A enters a first membrane filtration unit, and concentrated water B is obtained by treatment of the first membrane filtration unit; the concentrated water B and the raw water are converged and treated by the scale inhibition unit, then pressurized by the pump element, and finally filtered by the second membrane filtration unit; and the concentrated water A is discharged out of the split type reverse osmosis filter element device.
15. A split reverse osmosis cartridge device according to claim 1, wherein: the valve is also provided with a first flow limiting device which is assembled on the water outlet side of the valve body.
16. A split reverse osmosis cartridge device according to claim 15, wherein: the first flow limiting device is a proportional control valve, a flow control valve or a waste water hole.
17. A split reverse osmosis cartridge device according to claim 1, wherein: the second flow limiting device is connected with the second membrane filtration unit through a pipeline and is positioned on the concentrate side of the second membrane filtration unit.
18. A split reverse osmosis cartridge device according to claim 17, wherein: the second flow limiting device is a proportional regulating valve, a flow regulating valve or a waste water hole.
19. A water purifier, characterized in that: a split type reverse osmosis filter element device and a water purifier main body according to any one of claims 1 to 18, wherein the split type reverse osmosis filter element device is assembled on the water purifier main body;
during the operation condition, the raw water enters a first membrane filtration unit, and the first membrane filtration unit obtains pure water A and concentrated water A through treatment 1 And concentrate A 2 Concentrated water A 1 Enters a second membrane filtration unit which is treated by the methodPure water B and concentrated water B are obtained, the pure water B and raw water are converged and enter a first membrane filter unit, pure water A is discharged out of the water purifier, and the concentrated water B and the concentrated water A are discharged out of the water purifier 2 And merging and discharging the water purifying machine.
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