CN110498478B - Split type reverse osmosis filter element device and water purifier - Google Patents
Split type reverse osmosis filter element device and water purifier Download PDFInfo
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- CN110498478B CN110498478B CN201910895925.XA CN201910895925A CN110498478B CN 110498478 B CN110498478 B CN 110498478B CN 201910895925 A CN201910895925 A CN 201910895925A CN 110498478 B CN110498478 B CN 110498478B
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- pure water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 470
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 101
- 239000012528 membrane Substances 0.000 claims abstract description 67
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 238000005374 membrane filtration Methods 0.000 claims description 206
- 230000005764 inhibitory process Effects 0.000 claims description 30
- 238000007599 discharging Methods 0.000 claims description 17
- 238000005406 washing Methods 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 239000012141 concentrate Substances 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002474 experimental 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
The method comprises the following steps ofThe 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 adjusting pure water B 1 With pure water B 2 And a proportional adjustment assembly. And in the operating condition, one part of the pure water treated by the second membrane filtering unit is further treated by the first membrane filtering unit, and the other part of the pure 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 pure water of the two parts is regulated by the regulating component 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 to solve the defects in the prior art.
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 adjusting pure water B 1 With pure water B 2 The first membrane filter unit and the second membrane filter unit are connected through a pipeline, the adjusting component is connected with the second membrane filter unit through a pipeline, and the adjusting component is positioned on the water producing side of the second membrane filter unit and is also positioned on the first membrane filter unitA water producing side of the membrane filtration unit.
Under the operating condition, raw water enters a first membrane filtration unit, the first membrane filtration unit obtains pure water A and concentrated water A through treatment, the concentrated water A enters a second membrane filtration unit, and the second membrane filtration unit obtains pure water B through treatment 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with raw water and entering a first membrane filtration unit, pure water A and pure water B 2 And discharging the concentrated water B out of 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 temperature sensor for measuring the temperature of raw water, and the temperature sensor is assembled on the water inlet side of the first membrane filtration unit.
Defining a temperature value measured by a temperature sensor as T, and defining a first temperature threshold as T Threshold 1 The second temperature threshold is defined as T Threshold 2 And there is T Threshold 1 ＞T Threshold 2 。
When T is greater than or equal to T Threshold 1 Pure water B 2 Is 0ml/min.
When T is less than or equal to T Threshold 2 Pure water B 1 Is 0ml/min.
When T is Threshold 2 ＜T＜T Threshold 1 Pure water B 1 (pure water B) 1 +pure water B 2 ) =γ, and γ is present greater than O.
Preferably, T is as defined above Threshold 1 Is 25 ℃.
Preferably, T is as defined above Threshold 2 Is 10 ℃.
Preferably, the above-mentioned γ is 0.1 to 0.9.
The split type reverse osmosis filter element device is also provided with a device for metering pure water B 2 And the flowmeter is connected with the second membrane filtration unit through a pipeline.
Preferably, the adjusting assembly is provided with a first valve body, a second valve body and a flow adjusting valve.
The first valve body is connected with the first membrane filtration unit and the second membrane filtration unit through pipelines respectively, and the first valve body is positioned on the water inlet side of the first membrane filtration unit.
The second valve body, the flowmeter and the flow regulating valve are sequentially connected in series and are connected with the second membrane filter unit through pipelines, and the flow regulating valve is connected with the first membrane filter unit and is positioned on the water producing side of the first membrane filter 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, the first membrane filtration unit is treated to obtain pure water A and concentrated water A, the concentrated water A enters a second membrane filtration unit, and the second membrane filtration unit is treated to obtain pure water B 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with raw water, pressurizing by a pump element, and then entering a first membrane filtration unit, pure water A and pure water B 2 And discharging the concentrated water B out of 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 a scale inhibition unit to obtain raw water A, the raw water A is pressurized by a pump element and enters a first membrane filtration unit, the first membrane filtration unit is treated to obtain pure water A and concentrated water A, the concentrated water A enters a second membrane filtration unit, and the second membrane filtration unit is treated to obtain pure water B 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with the raw water A, pressurizing by a pump element, and then entering a first membrane filtration unit, wherein pure water A and pure water B 2 And discharging the concentrated water B out of 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 a scale inhibition unit to obtain raw water A, the raw water A is pressurized by a pump element and enters a first membrane filtration unit, the first membrane filtration unit is treated to obtain pure water A and concentrated water A, the concentrated water A enters a second membrane filtration unit, and the second membrane filtration unit is treated to obtain pure water B 1 Pure water B 2 And concentrate B; pure water B 1 The sewage is converged with raw water, treated by a scale inhibition unit, pressurized by a pump element and finally enters a first membrane filtration unit; pure water A and pure water B 2 And discharging the concentrated water B out of 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 proportional valve, and the proportional valve is connected with the second membrane filtration unit through a pipeline and is positioned on the water producing side of the second membrane filtration unit.
The invention relates to a split type reverse osmosis filter element device which is provided with a first membrane filter unit, a second membrane filter unit and a filter unit for adjusting pure water B 1 With pure water B 2 The first membrane filter unit and the second membrane filter unit are connected through pipelines, the adjusting assembly is connected with the second membrane filter unit through pipelines, and the adjusting assembly is located on the water producing side of the second membrane filter unit and is also located on the water producing side of the first membrane filter unit. And in the operating condition, one part of the pure water treated by the second membrane filtering unit is further treated by the first membrane filtering unit, and the other part of the pure 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 pure water of the two parts is regulated by the regulating component 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.
Under the operating condition, raw water enters a first membrane filtration unit, the first membrane filtration unit obtains pure water A and concentrated water A through treatment, the concentrated water A enters a second membrane filtration unit, and the second membrane filtration unit obtains pure water B through treatment 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with raw water and entering a first membrane filtration unit, pure water A and pure water B 2 And discharging the water purifier, wherein the concentrated water B is converged and 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.
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.
In fig. 1 to 8, 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 first valve body 61, a second valve body 62, and a flow rate regulating valve 63,
A temperature sensor 7.
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 filter unit for adjusting pure water B as shown in figures 1 and 2 1 With pure water B 2 The first membrane filtration unit 1 and the second membrane filtration unit 2 are connected through pipelines, the adjusting component is connected with the second membrane filtration unit 2 through pipelines, and the adjusting component is positioned on the water producing side of the second membrane filtration unit 2 and is also positioned on the water producing side of the first membrane filtration unit 1.
Under the operating condition, raw water enters a first membrane filtration unit 1, pure water A and concentrated water A are obtained by treatment of the first membrane filtration unit 1, the concentrated water A enters a second membrane filtration unit 2, and pure water B is obtained by treatment of the second membrane filtration unit 2 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with raw water and entering a first membrane filtration unit 1, pure water A and pure water B 2 And discharging the concentrated water B out of 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 temperature sensor 7 for measuring the temperature of raw water, and the temperature sensor 7 is assembled on the water inlet side of the first membrane filtration unit 1. Sensing the temperatureThe temperature value measured by the device 7 defines T, and the first temperature threshold is defined as T Threshold 1 The second temperature threshold is defined as T Threshold 2 And there is T Threshold 1 ＞T Threshold 2 . When T is greater than or equal to T Threshold 1 Pure water B 2 Is 0ml/min. When T is less than or equal to T Threshold 2 Pure water B 1 Is 0ml/min. When T is Threshold 2 ＜T＜T Threshold 1 Pure water B 1 (pure water B) 1 +pure water B 2 ) =γ, and γ is present greater than O.
T of the invention Threshold 1 Specifically 25 ℃; t (T) Threshold 2 Specifically 10 ℃. The gamma of the present invention is 0.1-0.9, and may be any value of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, etc., the gamma of this embodiment is specifically 0.5, that is, when the temperature value measured by the temperature sensor 7 is between 25 ℃ and 10 ℃, the regulating component is regulated to make pure water B 1 =pure water B 2 。
It should be noted that, when the actual temperature is higher than the first temperature threshold, the adjusting component of the invention can fully enter the pure water of the second membrane filtration unit 2 into the first membrane filtration unit 1, so that the water quality of the produced water of the split type reverse osmosis filter element device can be improved, and the scaling risk of the first membrane filtration unit 1 under the high pure water/concentrated water ratio can be reduced; when the actual temperature is lower than or equal to the second temperature threshold value, the adjusting component is adjusted to enable pure water of the second membrane filtration unit 2 to flow out completely, and the total water production capacity of the split type reverse osmosis filter element device is improved.
Meanwhile, the split type reverse osmosis filter element device is also provided with a device for metering pure water B 2 A flow meter 5 for the flow rate, the flow meter 5 being connected to the second membrane filtration unit 2 by a pipeline. The regulating assembly is provided with a first valve body 61, a second valve body 62 and a flow regulating valve 63, wherein the first valve body 61 is respectively connected with a first membrane filtration unit 1 and a second membrane filtration unit 2 through pipelines, the first valve body 61 is positioned on the water inlet side of the first membrane filtration unit 1, the second valve body 62, a flowmeter 5 and the flow regulating valve 63 are sequentially connected in series and are connected with the second membrane filtration unit 2 through pipelines, and the flow regulating valve 63 is connected with the first membrane filtration unit 1 and is positioned on the water production side of the first membrane filtration unit 1.
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 number of experiments, when 0.2D is confirmed 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 further provided with a proportional valve, and the proportional valve is connected with the second membrane filtration unit 2 through a pipeline and is positioned on the water producing side of the second membrane filtration unit 2.
The proportional valve of the invention is used for adjusting the pure water/concentrated water ratio.
The split type reverse osmosis filter element device is provided with a first membrane filter unit 1, a second membrane filter unit 2 and a filter unit for adjusting pure water B 1 With pure water B 2 The first membrane filtration unit 1 and the second membrane filtration unit 2 are connected through pipelines, the adjusting component is connected with the second membrane filtration unit 2 through pipelines, and the adjusting component is positioned on the water producing side of the second membrane filtration unit 2 and is also positioned on the water producing side of the first membrane filtration unit 1. In the operating condition, a part of pure water treated by the second membrane filtration unit 2 is further treated by the first membrane filtration unit 1, and the other part of pure water is directly discharged, so that the pure water/concentrated water ratio can be improved, and the waste of water resources is reduced. The ratio of the pure water of the two parts is regulated by the regulating assembly 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 filter unit 1, the first membrane filter unit 1 obtains pure water A and concentrated water A through treatment, the concentrated water A enters the second membrane filter unit 2, and the second membrane filter unit 2 obtains pure water B through treatment 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with raw water, pressurizing by a pump element 4, and then entering a first membrane filtration unit 1, pure water A and pure water B 2 And discharging the concentrated water B out of 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, the first membrane filtration unit 1 is treated to obtain pure water A and concentrated water A, the concentrated water A enters the second membrane filtration unit 2, and the second membrane filtration unit 2 is treated to obtain pure water B 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with the raw water A, pressurizing by a pump element 4, and then entering a first membrane filtration unit 1, pure water A and pure water B 2 And discharging the concentrated water B out of 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, the first membrane filtration unit 1 is treated to obtain pure water A and concentrated water A, the concentrated water A enters the second membrane filtration unit 2, and the second membrane filtration unit 2 is treated to obtain pure water B 1 Pure water B 2 And concentrate B; pure water B 1 The sewage is converged with raw water and treated by a scale inhibition unit 3, then pressurized by a pump element 4, and finally enters a first membrane filtration unit 1; pure water A and pure water B 2 And discharging the concentrated water B out of 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 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.
Under the operating condition, raw water enters a first membrane filtration unit 1, the first membrane filtration unit 1 obtains pure water A and concentrated water A through treatment, the concentrated water A enters a second membrane filtration unit 2, and the second membrane filtration unit is provided with a filter membraneThe pure water B is obtained by processing element 2 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with raw water and entering a first membrane filtration unit 1, pure water A and pure water B 2 And discharging the water purifier, wherein the concentrated water B is converged and discharged out of the water purifier.
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 (12)
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 pure water B 1 With pure water B 2 The first membrane filter unit and the second membrane filter unit are connected through a pipeline, the adjusting component is connected with the second membrane filter unit through a pipeline, and the adjusting component is positioned on the water producing side of the second membrane filter unit and is also positioned on the water producing side of the first membrane filter unit;
under the operating condition, raw water enters a first membrane filtration unit, the first membrane filtration unit obtains pure water A and concentrated water A through treatment, the concentrated water A enters a second membrane filtration unit, and the second membrane filtration unit obtains pure water B through treatment 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with raw water and entering a first membrane filtration unit, and purifyingWater A and pure water B 2 Discharging the split type reverse osmosis filter element device, and discharging the concentrated water B out of 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 temperature sensor is used for measuring the temperature of raw water and is assembled on the water inlet side of the first membrane filtration unit;
defining a temperature value measured by a temperature sensor as T, and defining a first temperature threshold as T Threshold 1 The second temperature threshold is defined as T Threshold 2 And there is T Threshold 1 ＞T Threshold 2 ；
When T is greater than or equal to T Threshold 1 Pure water B 2 0ml/min;
when T is less than or equal to T Threshold 2 Pure water B 1 0ml/min;
when T is Threshold 2 ＜T＜T Threshold 1 Pure water B 1 (pure water B) 1 +pure water B 2 ) =γ, and γ is present greater than O;
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.
2. A split reverse osmosis cartridge device according to claim 1, wherein: the T is Threshold 1 25 ℃;
the T is Threshold 2 10 ℃;
the gamma is 0.1-0.9.
3. A split reverse osmosis cartridge device according to claim 1, wherein: is also provided with a device for metering pure water B 2 And the flowmeter is connected with the second membrane filtration unit through a pipeline.
4. A split reverse osmosis cartridge device according to claim 3, wherein: the regulating component is provided with a first valve body, a second valve body and a flow regulating valve,
the first valve body is respectively connected with the first membrane filtration unit and the second membrane filtration unit through pipelines, and is positioned on the water inlet side of the first membrane filtration unit,
the second valve body, the flowmeter and the flow regulating valve are sequentially connected in series and are connected with the second membrane filter unit through pipelines, and the flow regulating valve is connected with the first membrane filter unit and is positioned on the water producing side of the first membrane filter unit.
5. 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 。
6. A split reverse osmosis cartridge device according to claim 1, wherein: c is more than or equal to 4:1.
7. 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 。
8. The split reverse osmosis cartridge device of claim 4, 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, the first membrane filtration unit is treated to obtain pure water A and concentrated water A, the concentrated water A enters a second membrane filtration unit, and the second membrane filtration unit is treated to obtain pure water B 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with raw water, pressurizing by a pump element, and then entering a first membrane filtration unit, pure water A and pure water B 2 Discharge split type reverse osmosis filter core dressThe concentrated water B is discharged out of 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.
9. The split reverse osmosis cartridge device of claim 8, wherein: the scale inhibition unit is connected with the pump element through a pipeline;
in the operating 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 first membrane filtration unit, the first membrane filtration unit is treated to obtain pure water A and concentrated water A, the concentrated water A enters a second membrane filtration unit, and the second membrane filtration unit is treated to obtain pure water B 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with the raw water A, pressurizing by a pump element, and then entering a first membrane filtration unit, wherein pure water A and pure water B 2 Discharging the split type reverse osmosis filter element device, and discharging the concentrated water B out of 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.
10. The split reverse osmosis cartridge device of claim 8, 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, the raw water is treated by the scale inhibition unit to obtain raw water A, and the raw water A is pressurized by the pump element to enter the first tankThe membrane filtration unit, the first membrane filtration unit obtains pure water A and concentrated water A through treatment, the concentrated water A enters the second membrane filtration unit, and the second membrane filtration unit obtains pure water B through treatment 1 Pure water B 2 And concentrate B; pure water B 1 The sewage is converged with raw water, treated by a scale inhibition unit, pressurized by a pump element and finally enters a first membrane filtration unit; pure water A and pure water B 2 Discharging the split type reverse osmosis filter element device, and discharging the concentrated water B out of 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.
11. A split reverse osmosis cartridge device according to claim 1, wherein: the water-producing device is also provided with a proportional valve which is connected with the second membrane filtration unit through a pipeline and is positioned on the water-producing side of the second membrane filtration unit.
12. 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 11, wherein the split type reverse osmosis filter element device is assembled on the water purifier main body;
under the operating condition, raw water enters a first membrane filtration unit, the first membrane filtration unit obtains pure water A and concentrated water A through treatment, the concentrated water A enters a second membrane filtration unit, and the second membrane filtration unit obtains pure water B through treatment 1 Pure water B 2 And concentrated water B, pure water B 1 Merging with raw water and entering a first membrane filtration unit, pure water A and pure water B 2 And discharging the water purifier, wherein the concentrated water B is converged and discharged out of the water purifier.
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