CN210710877U - Double-membrane reverse osmosis filter element device and water purifier - Google Patents
Double-membrane reverse osmosis filter element device and water purifier Download PDFInfo
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- CN210710877U CN210710877U CN201921580996.2U CN201921580996U CN210710877U CN 210710877 U CN210710877 U CN 210710877U CN 201921580996 U CN201921580996 U CN 201921580996U CN 210710877 U CN210710877 U CN 210710877U
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Abstract
A double-membrane reverse osmosis filter element device is provided with a first membrane filtering unit and a second membrane filtering unit which are connected through a pipeline. When the operation condition is met, the concentrated water A obtained by the treatment of the first membrane filtering unit is further treated by the second membrane filtering unit, so that the proportion of pure water/concentrated water can be improved, and the waste of water resources is reduced. Simultaneously the utility model discloses two diaphragm type reverse osmosis filter core devices are by two independent membrane filtration units, are based on the reverse osmosis filter core from the condition of the first scale deposit of rear end, so the user only need change second membrane filtration unit, and need not to go to change the first membrane filtration unit that does not become invalid, consequently can greatly reduced replacement cost. A water purifier is provided with the double-membrane type reverse osmosis filter element device and a water purifier main body, and the double-membrane type reverse osmosis filter element device is assembled on the water purifier main body. The water purifier can improve the proportion of pure water/concentrated water without affecting the service life of the membrane element and the quality of produced water.
Description
Technical Field
The utility model relates to a reverse osmosis filter core field, in particular to double-membrane reverse osmosis filter core device and purifier.
Background
In the reverse osmosis filter element technology in the prior art, the pure water/concentrated water ratio is mostly adjusted to be 1:1 or 2:1, 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, it is necessary to provide a double-membrane reverse osmosis filter element device and a water purifier to solve the deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
One of the purposes of the utility model is to avoid the disadvantages of the prior art and provide a double-membrane reverse osmosis filter element device. The double-membrane reverse osmosis filter element device can improve the proportion of pure water/concentrated water under the condition of not influencing the service life of a membrane element and producing water quality.
The above object of the present invention is achieved by the following technical measures:
the utility model provides a double-membrane reverse osmosis filter core device is provided with first membrane filtration unit and second membrane filtration unit, and first membrane filtration unit and second membrane filtration unit are with the tube coupling.
When the device operates, raw water enters the first membrane filtering unit, the first membrane filtering unit obtains pure water A and concentrated water A through treatment, the concentrated water A enters the second membrane filtering unit, the second membrane filtering unit obtains pure water B and concentrated water B through treatment, the pure water B and the raw water are converged and enter the first membrane filtering unit, the pure water A is discharged from the double-membrane type reverse osmosis filter element device, and the concentrated water B is discharged from the double-membrane type reverse osmosis filter element device.
Defining the pure water/concentrated water ratio in the operating condition as C, wherein the existence of C is more than 2: 1.
when the working condition is washed, raw water 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, and the concentrated water A is discharged from the double-membrane reverse osmosis filter element device.
Defining the failure duration of the first membrane filtration unit as E1Defining the failure time of the second membrane filtration unit as E2In the presence of E1＞E2。
Preferably, C.gtoreq.3: 1.
preferably, C.gtoreq.4: 1.
defining the water yield of the first membrane filtration unit as D1The water yield of the second membrane filtration unit is defined as D2In the presence of D1≥D2。
The utility model discloses a two diaphragm type reverse osmosis filter core devices still is provided with the pump component, and the pump component is connected with the pipeline with first membrane filtration unit and second membrane unit respectively.
When the operation condition is met, raw water enters the first membrane filtering unit through the pressurization of the pump element, the first membrane filtering unit obtains pure water A and concentrated water A through treatment, the concentrated water A enters the second membrane filtering unit, the second membrane filtering unit obtains pure water B and concentrated water B through treatment, the pure water B and the raw water are converged and enter the first membrane filtering unit after the pressurization of the pump element, the pure water A discharges the double-membrane reverse osmosis filter element device, and the concentrated water B and the concentrated water A are converged and discharge the double-membrane reverse osmosis filter element device.
When the working condition is washed, raw water enters the second membrane filtration unit through pressurization of the pump element, 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 is converged with the raw water and enters the second membrane filtration unit through the pump element, and the concentrated water A is discharged from the double-membrane reverse osmosis filter element device.
The utility model discloses a two diaphragm type reverse osmosis filter core devices still is provided with and hinders dirty unit, hinders dirty unit and pump element with the tube coupling.
When the device operates, raw water is treated by the scale inhibition unit to obtain raw water A, the raw water A enters the first membrane filtration unit through the pressurization of the pump element, 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, the second membrane filtration unit obtains pure water B and concentrated water B through treatment, the pure water B and the raw water A are converged and enter the first membrane filtration unit after the pressurization of the pump element, the pure water A is discharged from the double-membrane reverse osmosis filter element device, and the concentrated water B and the concentrated water A are converged and discharged from the double-membrane reverse osmosis filter element device.
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 enters the second membrane filtration unit through the pressurization of the pump element, 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 A are converged and enter the second membrane filtration unit through the pump element, and the concentrated water A is discharged from the double-membrane reverse osmosis filter element device.
The utility model discloses a two diaphragm type reverse osmosis filter core devices still is provided with and hinders dirty unit, hinders dirty unit with respectively with pump element, first membrane filtration unit and second membrane filtration unit with the tube coupling.
When the device operates, 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, 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 and concentrated water B through treatment; pure water B and raw water are converged, treated by a scale inhibition unit, pressurized by a pump element and finally enter a first membrane filtration unit; pure water A is discharged from the double-membrane reverse osmosis filter element device, and concentrated water B and the concentrated water A are converged and discharged from the double-membrane reverse osmosis filter element device.
In a flushing working 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 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, and the first membrane filtration unit obtains concentrated water B through treatment; the concentrated water B and the raw water are converged, treated by the scale inhibition unit, pressurized by the pump element and finally enter the second membrane filtration unit; the concentrated water A is discharged out of the double-membrane type reverse osmosis filter element device.
The utility model discloses a two diaphragm type reverse osmosis filter core devices still is provided with the pump component, and the pump component respectively with hinder dirty unit, first membrane filtration unit and second membrane filtration unit tube coupling.
When the device is in an operating condition, raw water is firstly treated by the scale inhibition unit, the raw water A treated by the scale inhibition unit is pressurized by the pump element and then enters the 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 the second membrane filtration unit, the second membrane filtration unit is treated to obtain pure water B and concentrated water B, the pure water B is treated by the scale inhibition unit and then joins with the raw water A, the pure water B is pressurized by the pump element and then enters the first membrane filtration unit, the pure water A is discharged from the double-membrane reverse osmosis filter element device, and the concentrated water B is discharged from the double-membrane reverse osmosis filter element device.
When the water purifier is in a flushing working condition, raw water is firstly treated by the scale inhibition unit, the raw water A treated by the scale inhibition unit 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 through pressurization of the pump element, the first membrane filtration unit is treated to obtain concentrated water B, the concentrated water B is converged with the raw water A to enter the second membrane filtration unit, and the concentrated water A is discharged out of the double-membrane reverse osmosis filter element device.
Preferably, the first membrane filtration unit is an ultrafiltration membrane reverse osmosis filter element, a nanofiltration membrane reverse osmosis filter element or a reverse osmosis membrane reverse osmosis filter element.
Preferably, the second membrane filtration unit is an ultrafiltration membrane reverse osmosis filter element, a nanofiltration membrane reverse osmosis filter element or a reverse osmosis membrane reverse osmosis filter element.
The utility model discloses a two diaphragm type reverse osmosis filter core devices still is provided with the proportional valve, and the proportional valve just is located second membrane filter unit's product water side with tube coupling with second membrane filter unit.
The utility model discloses a double-membrane reverse osmosis filter core device is provided with first membrane filtration unit and second membrane filtration unit, and first membrane filtration unit and second membrane filtration unit are with the tube coupling. When the operation condition is met, the concentrated water A obtained by the treatment of the first membrane filtering unit is further treated by the second membrane filtering unit, so that the proportion of pure water/concentrated water can be improved, and the waste of water resources is reduced. Simultaneously the utility model discloses two diaphragm type reverse osmosis filter core devices are by two independent membrane filtration units, are based on the reverse osmosis filter core from the condition of the first scale deposit of rear end, so the user only need change second membrane filtration unit, and need not to go to change the first membrane filtration unit that does not become invalid, consequently can greatly reduced replacement cost.
Another object of the present invention is to provide a water purifying machine which avoids the disadvantages of the prior art. The water purifier can improve the proportion of pure water/concentrated water without affecting the service life of the membrane element and the quality of produced water.
The above object of the present invention is achieved by the following technical measures:
the utility model provides a water purifier, set up as above double-membrane reverse osmosis filter core device and purifier main part, double-membrane reverse osmosis filter core device assembles in the purifier main part.
When the water purifier operates, raw water enters the first membrane filtering unit, the first membrane filtering unit obtains pure water A and concentrated water A through treatment, the concentrated water A enters the second membrane filtering unit, the second membrane filtering unit obtains pure water B and concentrated water B through treatment, the pure water B and the raw water are converged and enter the first membrane filtering unit, the pure water A is discharged from the water purifier, and the concentrated water B is discharged from the water purifier.
The utility model discloses a water purifier is provided with as above double-membrane reverse osmosis filter core device and water purifier main part, double-membrane reverse osmosis filter core device assembles in the water purifier main part. The water purifier can improve the proportion of pure water/concentrated water without affecting the service life of the membrane element and the quality of produced water.
Drawings
The present invention will be further described with reference to the accompanying drawings, but the contents in the drawings do not constitute any limitation to the present invention.
Fig. 1 is a schematic view of a double-membrane reverse osmosis filter element device of example 1 in the direction of water flow in an operating condition.
Fig. 2 is a schematic view of the flow direction of a double-membrane reverse osmosis filter element device in the flushing operation of the device in embodiment 1.
Fig. 3 is a schematic view of the flow direction of a dual-membrane reverse osmosis filter element device in the operating condition of the device in embodiment 2.
Fig. 4 is a schematic view of the flow direction of a dual-membrane reverse osmosis filter element device in the flushing operation of embodiment 2.
Fig. 5 is a schematic view of the flow direction of a dual-membrane reverse osmosis filter element device in the operating condition of the device in embodiment 3.
Fig. 6 is a schematic view of the flow direction of a dual-membrane reverse osmosis filter element device in the flushing operation of the device in embodiment 3.
Fig. 7 is a schematic view of the flow direction of a dual-membrane reverse osmosis filter element device of example 4 in an operating condition.
Fig. 8 is a schematic view of the flow direction of a dual-membrane reverse osmosis filter element device in example 4 in a flushing condition.
In fig. 1 to 8, the following components are included:
a first membrane filtration unit 1,
A second membrane filtration unit 2,
A scale inhibition unit 3,
A pump element 4,
A proportional valve 5.
Detailed Description
The technical solution of the present invention will be further explained by the following examples.
Example 1.
A double-membrane type reverse osmosis filter element device is provided with a first membrane filtration unit 1 and a second membrane filtration unit 2, wherein the first membrane filtration unit 1 and the second membrane filtration unit 2 are connected by a pipeline, as shown in figures 1 and 2.
When the operation condition is in, raw water enters the first membrane filtration unit 1, pure water A and concentrated water A are obtained by the first membrane filtration unit 1 through treatment, the concentrated water A enters the second membrane filtration unit 2, the pure water B and the concentrated water B are obtained by the second membrane filtration unit 2 through treatment, the pure water B and the raw water are converged and enter the first membrane filtration unit 1, the pure water A is discharged from the double-membrane reverse osmosis filter element device, and the concentrated water B is discharged from the double-membrane reverse osmosis filter element device.
When the working condition is washed, raw water enters the second membrane filtration unit 2, the second membrane filtration unit 2 obtains pure water A and concentrated water A through treatment, the pure water A enters the first membrane filtration unit 1, the first membrane filtration unit 1 obtains concentrated water B through treatment, the concentrated water B is converged with the raw water and enters the second membrane filtration unit 2, and the concentrated water A is discharged from the double-membrane reverse osmosis filter element device.
Defining the pure water/concentrated water ratio in the operating condition as C, wherein the existence of C is more than 2: 1. further preferred C.gtoreq.4: 1 or C is more than or equal to 3: 1, C in this embodiment is specifically 4: 1.
the utility model discloses define the length when becoming invalid of first membrane filtration unit 1 as E1The length of the failure time of the second membrane filtration unit 2 is defined as E2In the presence of E1＞E2. Because the second membrane filtration unit 2 of the present invention is located at the rear end of the first membrane filtration unit 1. The second membrane filtration unit 2 is superior to the first membrane filtration unit 1 in scaling, so that the failure time of the second membrane filtration unit 2 is shorter than that of the first membrane filtration unit 1; so that the replacement frequency of the second membrane filtration unit 2 is greater than the replacement frequency of the first membrane filtration unit 1.
Many cases of membrane reverse osmosis cartridge failure are not total failure, but rather blockage and scaling occur in the active area near the concentrate outlet section, resulting in a decrease in the water production capacity of the membrane element. The utility model discloses two diaphragm type reverse osmosis filter core devices comprise two independent parts, are based on the reverse osmosis filter core from the condition of the first scale deposit of rear end, so the user only need change second membrane filter unit 2, and need not to go to change the first membrane filter unit 1 that does not become invalid, consequently can greatly reduced replacement cost.
The utility model discloses a second membrane filtration unit 22 is milipore filter reverse osmosis filter core, receives filter membrane reverse osmosis filter core or reverse osmosis membrane reverse osmosis filter core, and specific embodiment is decided according to actual conditions. The utility model discloses a first membrane filtration unit 11 is milipore filter reverse osmosis filter core unit, receives filter membrane reverse osmosis filter core unit or reverse osmosis membrane reverse osmosis filter core unit, and specific embodiment is decided according to actual conditions. In this embodiment, the second membrane filtration unit 22 is a reverse osmosis membrane filter element, and the first membrane filtration unit 11 is a reverse osmosis membrane filter element.
The utility model discloses define the water yield of first membrane filtration unit 1 as D1The water yield of the second membrane filtration unit 2 is defined as D2In the presence of D1≥D2. The utility model discloses a D2Can be D10.5 times and 0Any number of times, such as 4 times, 0.3 times, 0.25 times, and 0.2 times, may be used as long as the number is 1.0 or less, and the specific number is determined in accordance with the actual circumstances. This embodiment is specifically D2Is 0.2D1. According to a large number of experiments, the product is proved to be 0.2D1In time, the cleanness of the first membrane filtering unit 1 can be effectively ensured, and meanwhile, the replacement cost of the second membrane filtering unit 2 can be reduced.
This double-membrane reverse osmosis filter core device is provided with first membrane filtration unit 1 and second membrane filtration unit 2, and first membrane filtration unit 1 and second membrane filtration unit 2 are with the tube coupling. When the operation condition is met, the concentrated water A obtained by the treatment of the first membrane filtering unit 1 is further treated by the second membrane filtering unit 2, so that the proportion of pure water/concentrated water can be improved, and the waste of water resources is reduced. Simultaneously the utility model discloses two diaphragm type reverse osmosis filter core devices are by two independent membrane filtration unit, are based on the reverse osmosis filter core from the condition of the first scale deposit of rear end, so the user only need change second membrane filtration unit 2, and need not to go to change the first membrane filtration unit 1 that does not become invalid, consequently can greatly reduced replacement cost.
Example 2.
A dual membrane reverse osmosis cartridge assembly, as shown in figures 3 and 4, having the same other features as in example 1 except that: a pump element 4 is also arranged, and the pump element 4 is respectively connected with the first membrane filtration unit 1 and the second membrane unit through pipelines;
when the device is in an operating condition, raw water enters the first membrane filtration unit 1 through pressurization of the pump element 4, pure water A and concentrated water A are obtained through treatment of the first membrane filtration unit 1, the concentrated water A enters the second membrane filtration unit 2, pure water B and concentrated water B are obtained through treatment of the second membrane filtration unit 2, the pure water B and the raw water are converged, pressurized by the pump element 4 and then enter the first membrane filtration unit 1, the pure water A is discharged from the double-membrane reverse osmosis filter element device, and the concentrated water B and the concentrated water A are converged and discharged from the double-membrane reverse osmosis filter element device;
when the working condition is washed, raw water enters the second membrane filtration unit 2 through the pressurization of the pump element 4, the second membrane filtration unit 2 obtains pure water A and concentrated water A through treatment, the pure water A enters the first membrane filtration unit 1, the first membrane filtration unit 1 obtains concentrated water B through treatment, the concentrated water B and the raw water are converged and enter the second membrane filtration unit 2 through the pump element 4, and the concentrated water A is discharged from the double-membrane reverse osmosis filter core device.
Compared with the embodiment 1, the embodiment has the advantages that the pressure can be increased by adding the pump element 4, and the water making speed is increased.
Example 3.
A dual membrane reverse osmosis cartridge assembly, as shown in figures 5 and 6, having the same other features as in example 2 except that: and a scale inhibition unit 3 is also arranged, and the scale inhibition unit 3 is connected with the pump element 4 through a pipeline.
When the device operates, raw water is treated by the scale inhibition unit 3 to obtain raw water A, the raw water A enters the first membrane filtration unit 1 through pressurization of the pump element 4, the first membrane filtration unit 1 obtains pure water A and concentrated water A through treatment, the concentrated water A enters the second membrane filtration unit 2, the second membrane filtration unit 2 obtains pure water B and concentrated water B through treatment, the pure water B and the raw water A are converged and enter the first membrane filtration unit 1 after pressurization of the pump element 4, the pure water A is discharged from the double-membrane reverse osmosis filter element device, and the concentrated water B and the concentrated water A are converged and discharged from the double-membrane reverse osmosis filter element device.
When the working condition is washed, 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 to enter 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 is converged with the raw water A and enters the second membrane filtration unit 2 through the pump element 4, and the concentrated water A is discharged from the double-membrane reverse osmosis filter element device.
The utility model discloses a dirty effect of unit 3 is, guarantees the quality of water of raw water, makes split type reverse osmosis filter core device keep can also operate stably under high pure water/dense water ratio.
Example 4.
A dual membrane reverse osmosis cartridge assembly, as shown in figures 7 and 8, having the same other features as in example 2 except that: the scale inhibition unit 3 is also arranged, and the scale inhibition unit 3 is respectively connected with the pump element 4, the first membrane filtration unit 1 and the second membrane filtration unit 2 through pipelines.
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 obtains pure water A and concentrated water A through treatment, the concentrated water A enters the second membrane filtration unit 2, and the second membrane filtration unit 2 obtains pure water B and concentrated water B through treatment; pure water B and raw water are converged, treated by a scale inhibition unit 3, pressurized by a pump element 4 and finally enter a first membrane filtration unit 1; pure water A is discharged from the double-membrane reverse osmosis filter element device, and concentrated water B and the concentrated water A are converged and discharged from the double-membrane reverse osmosis filter element device.
In a flushing working 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 second membrane filtration unit 2, the second membrane filtration unit 2 obtains pure water A and concentrated water A through treatment, the pure water A enters the first membrane filtration unit 1, and the first membrane filtration unit 1 obtains concentrated water B through treatment; the concentrated water B and the raw water are converged, treated by the scale inhibition unit 3, pressurized by the pump element 4 and finally enter the second membrane filtration unit 2; the concentrated water A is discharged out of the double-membrane type reverse osmosis filter element device.
The utility model discloses a dirty effect of unit 3 is, guarantees the quality of water of raw water, makes split type reverse osmosis filter core device keep can also operate stably under high pure water/dense water ratio.
Example 5.
A water purifier is provided with a double-membrane type reverse osmosis filter element device and a water purifier main body as in embodiment 1, wherein the double-membrane type reverse osmosis filter element device is assembled on the water purifier main body.
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. Purifier major structure among the prior art all is fit for as the purifier main part in this application, and no longer gives unnecessary details here.
When the water purifier operates, raw water enters the 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 the second membrane filtration unit 2, the second membrane filtration unit 2 obtains pure water B and concentrated water B through treatment, the pure water B and the raw water are converged and enter the first membrane filtration unit 1, the pure water A is discharged from the water purifier, and the concentrated water B is discharged from the water purifier.
When the water purifier is in a flushing working condition, raw water enters the second membrane filtration unit 2, the second membrane filtration unit 2 obtains pure water A and concentrated water A through treatment, the concentrated water A enters the first membrane filtration unit 1, the first membrane filtration unit 1 obtains concentrated water B through treatment, 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.
This purifier is provided with as above double-membrane reverse osmosis filter core device and purifier main part, and double-membrane reverse osmosis filter core device assembles in the purifier main part. The water purifier can improve the proportion of pure water/concentrated water without affecting the service life of the membrane element and the quality of produced water.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (11)
1. A double-membrane reverse osmosis filter element device is characterized in that: the membrane filtration device is provided with a first membrane filtration unit and a second membrane filtration unit which are connected through a pipeline;
when the device is in an 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, the second membrane filtration unit obtains pure water B and concentrated water B through treatment, the pure water B and the raw water are converged and enter the first membrane filtration unit, the pure water A is discharged from a double-membrane reverse osmosis filter element device, and the concentrated water B is discharged from the double-membrane reverse osmosis filter element device;
defining the pure water/concentrated water ratio in the operating condition as C, wherein the existence of C is more than 2: 1.
2. the dual membrane reverse osmosis filter element device of claim 1, wherein: when the working condition is washed, raw water 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, and the concentrated water A is discharged from the double-membrane reverse osmosis filter element device.
3. The dual membrane reverse osmosis filter element device of claim 1, wherein: defining the failure duration of the first membrane filtration unit as E1Defining the failure time of the second membrane filtration unit as E2In the presence of E1＞E2。
4. The dual membrane reverse osmosis filter element device of claim 1, wherein: c is more than or equal to 3: 1.
5. the dual membrane reverse osmosis filter element device of claim 4, wherein: c is more than or equal to 4: 1.
6. the dual membrane reverse osmosis filter element device of claim 1, wherein: defining the water yield of the first membrane filtration unit as D1The water yield of the second membrane filtration unit is defined as D2In the presence of D1≥D2。
7. The dual membrane reverse osmosis filter element device of claim 2, wherein: the membrane filtration device is also provided with a pump element which is respectively connected with the first membrane filtration unit and the second membrane filtration unit through pipelines;
when the device is in an operating condition, raw water enters a first membrane filtration unit through pressurization of a pump element, 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, the second membrane filtration unit obtains pure water B and concentrated water B through treatment, the pure water B and the raw water are converged, pressurized through the pump element and then enter the first membrane filtration unit, the pure water A is discharged from a double-membrane reverse osmosis filter element device, and the concentrated water B and the concentrated water A are converged and discharged from the double-membrane reverse osmosis filter element device;
when the working condition is washed, raw water enters the second membrane filtration unit through pressurization of the pump element, 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 is converged with the raw water and enters the second membrane filtration unit through the pump element, and the concentrated water A is discharged from the double-membrane reverse osmosis filter element device.
8. The dual membrane reverse osmosis filter element device of claim 7, wherein: the scale inhibition unit is connected with the pump element through a pipeline;
when the device is in an 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, the first membrane filtration unit is treated to obtain pure water A and concentrated water A, the concentrated water A enters the second membrane filtration unit, the second membrane filtration unit is treated to obtain pure water B and concentrated water B, the pure water B and the raw water A are converged and enter the first membrane filtration unit after being pressurized by the pump element, the pure water A is discharged from the double-membrane reverse osmosis filter element device, and the concentrated water B and the concentrated water A are converged and discharged from the double-membrane reverse osmosis filter element device;
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 enters the second membrane filtration unit through the pressurization of the pump element, 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 A are converged and enter the second membrane filtration unit through the pump element, and the concentrated water A is discharged from the double-membrane reverse osmosis filter element device.
9. The dual membrane reverse osmosis filter element device of claim 7, wherein: the scale inhibition unit is connected with the pump element, the first membrane filtration unit and the second membrane filtration unit through pipelines;
when the device operates, 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, 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 and concentrated water B through treatment; pure water B and raw water are converged, treated by a scale inhibition unit, pressurized by a pump element and finally enter a first membrane filtration unit; the pure water A is discharged from the double-membrane type reverse osmosis filter element device, and the concentrated water B and the concentrated water A are converged and discharged from the double-membrane type reverse osmosis filter element device;
in a flushing working 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 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, and the first membrane filtration unit obtains concentrated water B through treatment; the concentrated water B and the raw water are converged, treated by the scale inhibition unit, pressurized by the pump element and finally enter the second membrane filtration unit; the concentrated water A is discharged out of the double-membrane type reverse osmosis filter element device.
10. The dual membrane reverse osmosis filter element device of claim 1, wherein: the proportional valve is connected with the second membrane filtering unit through a pipeline and is positioned on the water producing side of the second membrane filtering unit.
11. A water purifier, which is characterized in that: the double-membrane type reverse osmosis filter element device as claimed in any one of claims 1 to 10 and a water purifier body are arranged, and the double-membrane type reverse osmosis filter element device is assembled on the water purifier body;
when the water purifier operates, raw water enters the first membrane filtering unit, the first membrane filtering unit obtains pure water A and concentrated water A through treatment, the concentrated water A enters the second membrane filtering unit, the second membrane filtering unit obtains pure water B and concentrated water B through treatment, the pure water B and the raw water are converged and enter the first membrane filtering unit, the pure water A is discharged from the water purifier, and the concentrated water B is discharged from the water purifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921580996.2U CN210710877U (en) | 2019-09-21 | 2019-09-21 | Double-membrane reverse osmosis filter element device and water purifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921580996.2U CN210710877U (en) | 2019-09-21 | 2019-09-21 | Double-membrane reverse osmosis filter element device and water purifier |
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| CN110498479A (en) * | 2019-09-21 | 2019-11-26 | 佛山市云米电器科技有限公司 | A kind of reverse osmosis filter element device of dual-membrane type and a kind of water purifier |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110498479A (en) * | 2019-09-21 | 2019-11-26 | 佛山市云米电器科技有限公司 | A kind of reverse osmosis filter element device of dual-membrane type and a kind of water purifier |
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Effective date of registration: 20211109 Address after: 528300 No. 2, North Xinxi 4th Road, Xiashi village, Lunjiao street, Shunde District, Foshan City, Guangdong Province (No. 1-6, north of the first floor of office building, block a, Shengda Industrial Park) Patentee after: Guangdong Chestnut Technology Co.,Ltd. Address before: 528300 Nepheline Village Committee, Lunjiao Sub-district Office, Shunde District, Foshan City, Guangdong Province Patentee before: FOSHAN VIOMI ELECTRICAL TECHNOLOGY Co.,Ltd. Patentee before: Chen Xiaoping |