CN116675292A - Filtering method and filtering system based on circulating waterway - Google Patents
Filtering method and filtering system based on circulating waterway Download PDFInfo
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- CN116675292A CN116675292A CN202210169998.2A CN202210169998A CN116675292A CN 116675292 A CN116675292 A CN 116675292A CN 202210169998 A CN202210169998 A CN 202210169998A CN 116675292 A CN116675292 A CN 116675292A
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- 238000001914 filtration Methods 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 767
- 239000002351 wastewater Substances 0.000 claims abstract description 240
- 238000011010 flushing procedure Methods 0.000 claims abstract description 146
- 238000010992 reflux Methods 0.000 claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 claims description 119
- 238000001514 detection method Methods 0.000 claims description 37
- 238000011144 upstream manufacturing Methods 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000012372 quality testing Methods 0.000 claims description 3
- 239000008213 purified water Substances 0.000 claims 2
- 239000002699 waste material Substances 0.000 abstract description 9
- 238000001223 reverse osmosis Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000012528 membrane Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000000746 purification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
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- 241000579895 Chlorostilbon Species 0.000 description 1
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- 238000004590 computer program Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
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- ZLIBICFPKPWGIZ-UHFFFAOYSA-N pyrimethanil Chemical compound CC1=CC(C)=NC(NC=2C=CC=CC=2)=N1 ZLIBICFPKPWGIZ-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Abstract
The invention discloses a filtering method based on a circulating waterway, which is applied to a filtering system, wherein the filtering system comprises a raw water branch, a supercharging device, a water producing branch, a wastewater discharge branch, a pure water reflux branch and a front device, and when judging that the water producing branch meets the flushing condition, the filtering system is controlled to execute flushing operation, wherein the flushing operation comprises flushing of a first stage and/or flushing of a second stage; and when judging that the water producing branch circuit meets the water producing condition, controlling the filtering system to execute the water producing of the first stage and the water producing of the second stage. Therefore, the invention can provide a multi-stage flushing and water making control mechanism to effectively flush and make water for the filter system, thereby remarkably improving the intelligent control level of the filter system, improving the flushing efficiency of the filter element, improving the water yield of the filter system, improving the water quality of the cup water and avoiding the waste of water resources.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to a filtering method and a filtering system based on a circulating waterway.
Background
Along with the rapid development of water purification technology, a filtration system for filtering through a reverse osmosis pressure membrane and other devices is increasingly popular, but concentrated wastewater stays in the reverse osmosis membrane device for a long time, so that salt or other soluble solids are attached to the reverse osmosis pressure membrane, and the service life of the reverse osmosis pressure membrane is reduced. Therefore, frequent flushing of the filtration system is required.
In the practical application process, the wastewater side of the reverse osmosis pressure membrane is usually washed by filtered water or raw water and the washed water is directly discharged. However, this flushing method can result in a filtration system that discharges a greater amount of wastewater during the flushing process, reducing the water production efficiency of the filtration system and wasting water resources.
It is important to provide a filtering method based on a circulating waterway to improve the flushing and water production efficiency.
Disclosure of Invention
The invention provides a filtering method and a device based on a circulating waterway, which can provide a multi-stage flushing and water making control mechanism to effectively flush and make water for a filtering system, remarkably improve the intelligent control level of the filtering system, improve the flushing efficiency of a filter element, improve the water yield of the filtering system, improve the water quality of cup water and avoid the waste of water resources.
In order to solve the technical problem, a first aspect of the present invention discloses a filtration method based on a circulation waterway, the method is applied to a filtration system, the filtration system comprises a raw water branch, a supercharging device, a water producing branch, a wastewater discharging branch and a pure water discharging branch, the water producing branch comprises a filter element water inlet, a filter element, a pure water outlet and a wastewater outlet, the raw water branch is provided with the supercharging device, the supercharging device is used for generating water pressure difference, the supercharging device is located at the upstream of the water producing branch, the filtration system further comprises a pure water backflow branch and a front device, and the front device is located at the upstream of the supercharging device, the method comprises:
judging whether the water producing branch circuit meets flushing conditions or not;
when the water producing branch circuit is judged to meet the flushing condition, controlling the filtering system to execute flushing operation, wherein the flushing operation comprises flushing of a first stage and/or flushing of a second stage;
when the first-stage flushing is performed, controlling the filtering system to perform a first flushing operation, wherein the first flushing operation is used for returning pure water generated by the water generating branch to the front device through the pure water return branch so as to push water in the front device out of the pressurizing device and then input the water generating branch to flush the filter element;
When the second-stage flushing is carried out, controlling the filtering system to execute a second flushing operation, wherein the second flushing operation is used for starting the waste water discharge branch, pushing water in the front device to the pressurizing device in a high-flow mode, and then inputting the water into the water production branch to burst the filter element;
judging whether the water producing branch circuit meets the water producing condition or not;
when the water producing branch circuit meets the water producing condition, controlling the filtering system to execute water producing in the first stage and water producing in the second stage;
when the water making of the first stage is carried out, controlling the filtering system to execute a first water making operation, wherein the first water making operation is used for controlling the waste water discharge branch to discharge waste water at an opening smaller than a preset opening so as to discharge pure water generated by the water production branch through the pure water discharge branch;
and when the water making of the second stage is performed, controlling the filtering system to execute a second water making operation, wherein the second water making operation is used for controlling the wastewater discharge branch to discharge wastewater at the preset opening degree so as to discharge pure water generated by the water production branch through the pure water discharge branch.
As an alternative embodiment, in the first aspect of the present invention, the filtration system further includes a waste water return branch;
While performing the first stage flush, the method further comprises:
controlling the waste water backflow branch to execute a first waste water backflow operation, wherein the first waste water backflow operation is used for backflow of waste water discharged from the waste water outlet to the adding device and then inputting the waste water into the water production branch so as to maintain the water quality balance of the filter element; and closing the waste water discharge branch.
As an alternative embodiment, in the first aspect of the present invention, when the first stage of water production is performed, the method further includes:
and controlling the waste water backflow branch to execute a second waste water backflow operation, wherein the second waste water backflow operation is used for controlling the waste water backflow branch to backflow waste water discharged from the waste water outlet to the supercharging device and then inputting the waste water into the water production branch so as to discharge pure water generated by the water production branch through the pure water discharge branch.
As an alternative embodiment, in the first aspect of the present invention, the method further includes:
judging whether the water production of the first stage is finished or not when the water production of the first stage is carried out, and starting the water production of the second stage when the water production of the first stage is judged to be finished;
Wherein, the judging whether the water making in the first stage is completed comprises:
judging whether the duration of the water making in the first stage exceeds a first preset duration, and determining that the water making in the first stage is completed when judging that the duration of the water making in the first stage exceeds the first preset duration; or alternatively, the process may be performed,
judging whether the first water quality value of the wastewater outlet exceeds a first water quality threshold value, and determining that the water production in the first stage is completed when the first water quality value of the wastewater outlet exceeds the first water quality threshold value.
As an alternative embodiment, in the first aspect of the present invention, the method further includes:
and when the water making in the first stage or the water making in the second stage is carried out, controlling the waste water backflow branch to execute closing operation when judging that the first water quality value of the waste water outlet exceeds a second water quality threshold value or when judging that the second water quality value of the water inlet of the filter element exceeds a third water quality threshold value.
As an optional implementation manner, in the first aspect of the present invention, the method for determining that the water producing branch meets the flushing condition includes:
Judging whether the first water quality value of the wastewater outlet exceeds a fourth water quality threshold, and determining that the water producing branch meets the flushing condition when the first water quality value exceeds the fourth water quality threshold; or alternatively, the process may be performed,
judging whether the third water quality value of the pure water outlet exceeds a fifth water quality threshold value, and determining that the water producing branch meets the flushing condition when the third water quality value exceeds the fifth water quality threshold value; or alternatively, the process may be performed,
judging whether the fourth water quality value of the pure water discharge branch exceeds a sixth water quality threshold, and determining that the water producing branch meets the flushing condition when the fourth water quality value exceeds the sixth water quality threshold; or alternatively, the process may be performed,
judging whether the time difference between the current time point and the time point when the last flushing of the water producing branch is finished exceeds a second preset duration, and determining that the water producing branch meets the flushing condition when the time difference between the current time point and the time point when the last flushing of the water producing branch is finished exceeds the second preset duration; or alternatively, the process may be performed,
judging whether the working time length of the water producing branch circuit exceeds a third preset time length, and determining that the water producing branch circuit meets the flushing condition when the working time length of the water producing branch circuit exceeds the third preset time length, wherein the working time length comprises the total time length of single water producing working time length or the latest N water producing working time lengths; or alternatively, the process may be performed,
Judging whether the water production amount of the water producing branch exceeds a preset water amount, and determining that the water producing branch meets the flushing condition when judging that the water production amount of the water producing branch exceeds the preset water amount, wherein the water production amount comprises the water production amount of a single time or the total water production amount of the latest N times; or alternatively, the process may be performed,
judging whether the water production times of the water production branch circuit exceeds preset water production times, and determining that the water production branch circuit meets the flushing condition when judging that the water production times of the water production branch circuit exceeds the preset water production times, wherein the water production times comprise the sum of the water production times between the current time point and the time point when the latest flushing of the water production branch circuit is finished or the total water production times in the water production life cycle of the water production branch circuit.
The second aspect of the present invention discloses a filtration system, the filtration system includes a raw water branch, a supercharging device, a water producing branch, a waste water discharging branch and a pure water discharging branch, the water producing branch includes a filter core water inlet, a filter core, a pure water outlet and a waste water outlet, the raw water branch is provided with the supercharging device, the supercharging device is used for generating a water pressure difference, the supercharging device is located at the upstream of the water producing branch, the filtration system is characterized in that the filtration system further includes:
The pure water backflow branch circuit and the pure water discharge branch circuit are intersected at a first pure water backflow intersection point, and the pure water backflow branch circuit and the raw water branch circuit are intersected at a second pure water backflow intersection point;
the raw water branch is provided with a front device which is used for buffering raw water of the raw water branch or/and the pure water outlet to discharge the returned pure water; the front device is positioned downstream of the second pure water reflux cross point and upstream of the pressurizing device;
the filtering system is used for performing flushing operation when judging that the water producing branch circuit meets flushing conditions, wherein the flushing operation comprises flushing of a first stage and/or flushing of a second stage;
when the first-stage flushing is carried out, the pure water backflow branch is used for backflow of pure water generated by the water production branch to the front device so as to push water in the front device out of the pressurizing device and then input the water production branch to flush the filter element;
when the second stage flushing is carried out, the waste water discharge branch is opened, and the front device is used for pushing out the water buffered by the front device to the pressurizing device in a high flow mode and then inputting the water to the water production branch so as to burst the filter element;
The water producing branch is used for producing water in the first stage and producing water in the second stage when judging that the water producing branch meets the water producing condition;
wherein, when the water production in the first stage is carried out, the waste water discharge branch is used for discharging waste water with the opening degree smaller than the preset opening degree so as to discharge pure water generated by the water production branch through the pure water discharge branch;
and when water production in the second stage is performed, the waste water discharge branch is used for discharging waste water at the preset opening degree so as to discharge pure water generated by the water production branch through the pure water discharge branch.
As an alternative embodiment, in the second aspect of the present invention, the filtering system further includes:
a waste water return branch, wherein the waste water return branch and the waste water discharge branch are intersected at a first waste water return intersection point, and the waste water return branch and the raw water branch are intersected at a second waste water return intersection point; the second wastewater reflux intersection point is positioned at the downstream of the front device and at the upstream of the supercharging device;
when the first-stage flushing is carried out, the waste water reflux branch is used for refluxing the waste water discharged from the waste water outlet to the adding device and then inputting the waste water into the water producing branch so as to maintain the water quality balance of the filter element; the waste water discharge branch is closed.
As an alternative embodiment, in the second aspect of the present invention, the pure water reflux branch is provided with a pure water reflux valve assembly; the waste water reflux branch is provided with a waste water reflux valve component; the pure water discharge branch is provided with a pure water valve component; and a wastewater valve assembly is arranged on the wastewater discharge branch.
As an alternative embodiment, in the second aspect of the present invention, the filtering system further includes:
a water quality detection device is arranged on a branch communicated with the wastewater outlet and is used for monitoring the real-time water quality value of the wastewater outlet;
wherein, water quality testing device includes:
the first water quality detection device is arranged at the wastewater outlet; or/and the combination of the two,
the second water quality detection device is arranged on the waste water return branch; or/and the combination of the two,
and a third water quality detection device arranged on the waste water discharge branch.
In a second aspect of the present invention, when the waste water recirculation branch and the waste water discharge branch share a part of the branch, waste water proportioning means are provided on the branch shared by the waste water recirculation branch and the waste water discharge branch, the waste water proportioning means being used for adjusting the water volume proportions of the waste water discharged from the waste water outlet flowing into the waste water recirculation branch and the waste water discharge branch, respectively.
In a second aspect of the present invention, a fourth water quality detection device is disposed at the water inlet of the filter element of the water producing branch, and the fourth water quality detection device is used for detecting the water quality condition of the water inlet of the filter element.
In a second aspect of the present invention, a fifth water quality detection device is provided on the raw water branch, the fifth water quality detection device being located downstream of the second pure water backflow intersection and upstream of the front device, the fifth water quality detection device being configured to detect the water quality of mixed water formed by mixing the pure water discharged from the pure water outlet with raw water in the raw water branch after the pure water backflow.
In a second aspect of the present invention, a sixth water quality detection device is provided on the raw water branch, the sixth water quality detection device being located downstream of the pre-device and upstream of the second wastewater return junction, the sixth water quality detection device being configured to detect the water quality of the water output from the pre-device.
In a third aspect, the invention discloses another filtering device based on a circulating waterway, the device comprises:
A memory storing executable program code;
a processor coupled to the memory;
the processor invokes the executable program code stored in the memory to perform part or all of the steps in any of the filtering methods based on the circulating waterway disclosed in the first aspect of the present invention.
A fourth aspect of the invention discloses a computer storage medium storing computer instructions which, when invoked, are adapted to perform part or all of the steps of any one of the circulation waterway-based filtration methods disclosed in the first aspect of the invention.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a filtering method based on a circulating waterway, which is applied to a filtering system, wherein the filtering system comprises a raw water branch, a supercharging device, a water producing branch, a wastewater discharge branch, a pure water reflux branch and a front device, and when judging that the water producing branch meets the flushing condition, the filtering system is controlled to execute flushing operation, wherein the flushing operation comprises flushing of a first stage and/or flushing of a second stage; and when judging that the water producing branch circuit meets the water producing condition, controlling the filtering system to execute the water producing of the first stage and the water producing of the second stage. Therefore, the invention can provide a multi-stage flushing and water making control mechanism to effectively flush and make water for the filter system, thereby remarkably improving the intelligent control level of the filter system, improving the flushing efficiency of the filter element, improving the water yield of the filter system, improving the water quality of the cup water and avoiding the waste of water resources.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a filtering method based on a circulating waterway, disclosed in an embodiment of the present invention;
FIG. 2 is a schematic flow chart of another filtering method based on a circulating waterway, disclosed in the embodiment of the present invention;
FIG. 3 is a schematic diagram of a filtering system based on a circulating water channel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another filtering system based on a circulating water circuit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a filtering control device based on a circulating waterway according to an embodiment of the present invention.
The reference numerals in the drawings represent the following meanings: a water producing branch 1; a pure water return valve assembly 2; a supercharging device 3; a first water quality detection device 4; a front-end device 5; a waste water return valve assembly 6; a fourth water quality detection device 7; an eighth water quality detection device 8; a fifth water quality detection device 9; a wastewater proportioning device 10; a second water quality detection device 11; a third water quality detection device 12; a waste valve assembly 13; a pure water valve assembly 14; a first pure water reflux cross point A; a second pure water reflux cross point B; a first wastewater reflux crossover point C; and the second wastewater flows back to the cross point D.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms first, second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, apparatus, article, or article that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or article.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The invention discloses a filtering method and a device based on a circulating waterway, which can provide a multi-stage flushing and water making control mechanism to effectively flush and make water for a filtering system, remarkably improve the intelligent control level of the filtering system, improve the flushing efficiency of a filter element, improve the water yield of the filtering system, improve the water quality of head cup water and avoid the waste of water resources. In addition, one or more embodiments of the present invention may be applied to any filtering system, such as a household filtering system, a commercial water purifier, a water purifier for a water purification plant, etc., and the embodiments of the present invention are not limited thereto, and are described in detail below.
Example 1
Referring to fig. 1, fig. 1 is a schematic flow chart of a filtering method based on a circulating water channel according to an embodiment of the invention. As shown in fig. 1, the filtering method based on the circulation waterway may include the following operations:
101. judging whether the water producing branch circuit meets the flushing condition.
In the embodiment of the invention, the filtering system comprises a raw water branch, a supercharging device, a water producing branch, a waste water discharging branch and a pure water discharging branch, wherein the water producing branch comprises a filter element water inlet, a filter element, a pure water outlet and a waste water outlet, the raw water branch is provided with the supercharging device, the supercharging device is used for generating water pressure difference, the supercharging device is positioned at the upstream of the water producing branch, the filtering system also comprises a pure water backflow branch and a front device, and the front device is positioned at the upstream of the supercharging device. Raw water flows through the front device and is pressurized by the pressurizing device, then is input into a water inlet of a filter element of the water producing branch, filtered into pure water and waste water by the filter element of the water producing branch, and pure water can flow back to the upstream of the front device through the pure water backflow branch and then is input into the water producing branch through the pressurizing device, and can be discharged through the pure water discharge branch; the wastewater can be discharged through the wastewater discharge branch. The method of the invention needs to judge whether the water producing branch circuit meets the flushing condition, namely whether the filter element meets the flushing condition, and the flushing operation is started when the flushing condition is met. For example, after a user accumulates a certain volume of water, the flushing operation is started by detecting a change in TDS at the wastewater outlet to a certain value. In the embodiment of the invention, the front device is used for buffering water input by the raw water branch and/or the pure water reflux branch. The front device may include a single-cavity water storage device, a multi-cavity water storage device, an air bag water storage device, a filtering device, and the like, and the embodiment of the invention is not limited. In addition, the present invention is not limited to the capacity of the front-end device, but preferably, the capacity of the front-end device is not fixed and is adjustable.
102. And when the water producing branch circuit is judged to meet the flushing condition, controlling the filtering system to execute flushing operation, wherein the flushing operation comprises flushing in the first stage and/or flushing in the second stage.
In the embodiment of the invention, when judging that the water producing branch meets the flushing condition, the filter element is required to be flushed, and the flushing of the filter element in the embodiment of the invention is divided into two stages: a first stage rinse and/or a second stage rinse. The embodiments of the present invention are not limited to a two stage rinse sequence.
103. The filter system is controlled to perform a first flushing operation while the first stage flushing is performed.
In the embodiment of the invention, the first flushing operation is used for refluxing pure water generated by the water producing branch to the front device through the pure water reflux branch so as to push the water in the front device to the pressurizing device and then input the water producing branch to flush the filter element.
In the first stage of flushing, only pure water or mixed water of pure water and raw water is input into the front-end device, at the moment, the water quality value (such as TDS, alkalinity, hardness and the like, which are not limited in the embodiment of the invention) of the input water is obviously very small (namely, the water quality condition is better), and at the moment, the water level of the front-end device is low, so that a better flushing effect on the filter element can be achieved. Meanwhile, the small flow discharge or closing (also can be firstly closed and then the small flow discharge, or a certain flow is firstly discharged and then the discharge flow is gradually reduced to be closed) of the waste water discharge branch is controlled, and the smaller the waste water discharge, the lower the concentration of the dilution water buffered in the front-end device, namely, the better the water quality is, is needed to be explained.
104. The filter system is controlled to perform a second flushing operation while the second stage flushing is performed.
In the embodiment of the invention, the second flushing operation is used for starting the waste water discharge branch, pushing out the water in the front device to the supercharging device in a high-flow mode, and then inputting the water into the water production branch to burst the filter element.
And when the second stage is performed, the pure water discharge branch is closed, the waste water discharge branch is opened to a large flow discharge degree, and the low-concentration water buffered in the front device is quickly flushed into the waste water side of the filter element so as to flush and replace the concentrated water on the waste water side. At this time, since the opening degree of the waste water discharge branch is large, the water inflow of the filter element is hardly concentrated, and the water concentration on the waste water side in the whole filter element is almost equal to the concentration of the water inflow of the filter element, so that the average water concentration of the whole filter element is extremely low (equilibrium concentration).
105. Judging whether the water producing branch circuit meets the water producing condition.
106. And when judging that the water producing branch circuit meets the water producing condition, controlling the filtering system to execute the water producing of the first stage and the water producing of the second stage.
107. The filter system is controlled to perform a first water making operation when the first stage water making is performed.
In the embodiment of the invention, when the water making in the first stage is performed, the filtering system is controlled to execute the first water making operation, and the first water making operation is used for controlling the wastewater discharge branch to discharge wastewater at the opening degree smaller than the preset opening degree so as to discharge pure water generated by the water production branch through the pure water discharge branch.
In the embodiment of the invention, the time or flow of wastewater discharge can be controlled according to the preset control mode. The preset control mode may be a time mode, a water quality module, a mixture of a time mode and a water quality mode, or the like, and the embodiment of the invention is not limited.
108. And controlling the filtering system to execute a second water making operation when the second stage water making is carried out.
In the embodiment of the invention, when water production in the second stage is performed, the filtering system is controlled to perform a second water production operation, and the second water production operation is used for controlling the wastewater discharge branch to discharge wastewater at a preset opening degree so as to discharge pure water generated by the water production branch through the pure water discharge branch.
Therefore, the method described by the embodiment of the invention can provide a multi-stage flushing and water making control mechanism to effectively flush and make water for the filter system, thereby obviously improving the intelligent control level of the filter system, improving the flushing efficiency of the filter element, improving the water yield of the filter system, improving the water quality of the cup water and avoiding the waste of water resources.
In an alternative embodiment, the method may further comprise the operations of:
judging whether the water production of the first stage is finished when the water production of the first stage is carried out, and starting the water production of the second stage when the water production of the first stage is judged to be finished;
Wherein, judge whether the water production of first stage is accomplished, include:
judging whether the duration of the water making in the first stage exceeds a first preset duration, and determining that the water making in the first stage is finished when judging that the duration of the water making in the first stage exceeds the first preset duration; or alternatively, the process may be performed,
judging whether the first water quality value of the wastewater outlet exceeds a first water quality threshold value, and determining that the water production in the first stage is completed when the first water quality value of the wastewater outlet exceeds the first water quality threshold value.
In the embodiment of the invention, the demarcation point between the water making process of the first stage and the water making process of the second stage can be controlled according to the preset control mode. The preset control mode may be a time mode, a water quality module, a mixture of a time mode and a water quality mode, or the like, and the embodiment of the invention is not limited.
Therefore, the method described by the embodiment of the invention can provide a flexible control mode, realize the accurate segmentation of the water making stage, be favorable for realizing the fine regulation and control level of the water making process and further improve the water yield of the filtering system.
In yet another alternative embodiment, determining whether the water producing branch meets the flush condition may include the operations of:
Judging whether the first water quality value of the wastewater outlet exceeds a fourth water quality threshold value, and determining that the water producing branch meets the flushing condition when the first water quality value exceeds the fourth water quality threshold value; or alternatively, the process may be performed,
judging whether the third water quality value of the pure water outlet exceeds a fifth water quality threshold value, and determining that the water producing branch meets the flushing condition when the third water quality value exceeds the fifth water quality threshold value; or alternatively, the process may be performed,
judging whether the fourth water quality value of the pure water discharge branch exceeds a sixth water quality threshold, and determining that the water producing branch meets the flushing condition when the fourth water quality value exceeds the sixth water quality threshold; or alternatively, the process may be performed,
judging whether the time difference between the current time point and the time point when the water producing branch is finished in the last flushing exceeds a second preset duration, and determining that the water producing branch meets the flushing condition when the time difference between the current time point and the time point when the water producing branch is finished in the last flushing exceeds the second preset duration; or alternatively, the process may be performed,
judging whether the working time length of the water producing branch exceeds a third preset time length, and determining that the water producing branch meets the flushing condition when the working time length of the water producing branch exceeds the third preset time length, wherein the working time length comprises the total time length of single water producing working time length or the latest N water producing working time lengths; or alternatively, the process may be performed,
Judging whether the water production amount of the water producing branch exceeds a preset water amount, and determining that the water producing branch meets a flushing condition when judging that the water production amount of the water producing branch exceeds the preset water amount, wherein the water production amount comprises the water production amount of a single time or the water production amount sum of N times recently; or alternatively, the process may be performed,
judging whether the water production times of the water production branch circuit exceeds preset water production times, and determining that the water production branch circuit meets the flushing condition when judging that the water production times of the water production branch circuit exceeds the preset water production times, wherein the water production times comprise the sum of the water production times between the current time point and the time point when the last flushing of the water production branch circuit is finished or the total water production times in the water production life cycle of the water production branch circuit.
Therefore, the method described by the embodiment of the invention can provide a multi-stage waterway control mechanism to realize effective flushing and water production of the filtering system, and also provides a plurality of methods for detecting whether the filter element meets flushing conditions, so that the service condition of the filter element can be monitored more accurately, the filter element can be flushed accurately, unnecessary flushing operation is avoided, the flushing effect of the filter element is further improved, and the water yield of the system is improved.
Example two
Referring to fig. 2, fig. 2 is a flow chart of another filtering method based on a circulating water channel according to an embodiment of the invention. As shown in fig. 2, the filtering method based on the circulation waterway may include the following operations:
201. Judging whether the water producing branch circuit meets the flushing condition.
202. And when the water producing branch circuit is judged to meet the flushing condition, controlling the filtering system to execute flushing operation, wherein the flushing operation comprises flushing in the first stage and/or flushing in the second stage.
203. When the first-stage flushing is performed, the filtering system is controlled to perform a first flushing operation, and the waste water backflow branch is controlled to perform a first waste water backflow operation.
In the embodiment of the invention, when the first-stage flushing is performed, the filtering system is controlled to execute the first flushing operation, and the waste water backflow branch is controlled to execute the first waste water backflow operation, wherein the first waste water backflow operation is used for backflow of waste water discharged from the waste water outlet to the adding device and then inputting the waste water into the water production branch so as to maintain the water quality balance of the filter element; and closing the waste water discharge branch.
In the embodiment of the invention, pure water generated by the water producing branch flows back to the front device through the pure water backflow branch, raw water in the front device is diluted into low-concentration water, meanwhile, waste water generated by the water producing branch flows back to the downstream of the front device, and is input into the water producing branch through the supercharging device, so that the TDS balance of the filter element can be maintained, waste water is not discharged at the moment, and flushing water can be saved.
204. The filter system is controlled to perform a second flushing operation while the second stage flushing is performed.
205. Judging whether the water producing branch circuit meets the water producing condition.
206. And when judging that the water producing branch circuit meets the water producing condition, controlling the filtering system to execute the water producing of the first stage and the water producing of the second stage.
207. When the water making of the first stage is carried out, the filtering system is controlled to execute the first water making operation, and meanwhile, the waste water backflow branch is controlled to execute the second waste water backflow operation.
In the embodiment of the invention, when water production in the first stage is performed, the filtering system is controlled to execute the first water production operation, and the waste water backflow branch is controlled to execute the second waste water backflow operation, wherein the second waste water backflow operation is used for controlling the waste water backflow branch to backflow the waste water discharged from the waste water outlet to the supercharging device and then inputting the waste water into the water production branch so as to discharge pure water generated by the water production branch through the pure water discharge branch.
In the embodiment of the invention, after the flushing operation is finished, the concentration of the wastewater generated by the water producing branch is lower, and part of the low-concentration wastewater can be input into the water producing branch through the wastewater reflux branch in a reflux way so as to produce water, thereby achieving the purpose of saving water.
208. And controlling the filtering system to execute a second water making operation when the second stage water making is carried out.
In the embodiment of the present invention, for other descriptions of the steps 201 to 208, please refer to the detailed descriptions of the steps 101 to 108 in the first embodiment, respectively, and the description of the embodiment of the present invention is omitted.
Therefore, the method described by the embodiment of the invention can provide a multi-stage waterway control mechanism combining pure water and wastewater circulation, and after the filtering system is effectively washed, the operation of mixing water and preparing water is continuously carried out through the wastewater reflux circulation, so that the purposes of reutilizing the mixed water in the front device and the wastewater in the water preparing process are achieved, the aim of secondary water saving is fulfilled, the problem that the water quality value of the cup water is poor when a user takes water is solved, the water yield of the filtering system is improved, and the waste of water resources is avoided.
In yet another alternative embodiment, the method may further comprise the operations of:
when the first water quality value of the wastewater outlet exceeds the second water quality threshold value or the second water quality value of the water inlet of the filter element exceeds the third water quality threshold value, the wastewater reflux branch is controlled to execute closing operation.
In the embodiment of the invention, whether in the water making process of the first stage or the water making process of the second stage, the opening or closing of the waste water reflux branch can be controlled by monitoring whether the water quality value of the waste water outlet exceeds the standard or whether the water quality value of the water inlet of the filter element exceeds the standard. Meanwhile, the use proportion of wastewater circulation can be adjusted according to the parameters, so that the accurate utilization of wastewater can be realized.
Therefore, the method described by the embodiment of the invention can provide a flexible control mode, dynamically adjust the use proportion of wastewater circulation while not increasing the salinity of the filter element, achieve the level of fine regulation and control of wastewater backflow, be favorable for realizing the accurate flushing of the filter element, simultaneously improve the recycling rate of wastewater, and further improve the water production and water yield of the filtering system.
Example III
Referring to fig. 3, fig. 3 is a schematic structural diagram of a filtering system based on a circulation water path according to an embodiment of the present invention. As shown in fig. 3, the filtering system includes a water producing branch 1, the water producing branch 1 includes a filter element water inlet, a filter element, a pure water outlet and a waste water outlet, the filter element water inlet is connected with a raw water branch, the pure water outlet is connected with a pure water discharging branch, the waste water outlet is connected with a waste water discharging branch, wherein the filter element can be a common filter element or a reverse osmosis filter element, and the embodiment of the invention is not limited. When the filter core is a reverse osmosis filter core, the upstream of the water producing branch 1 can be further provided with a pressurizing device 3, the pressurizing device 3 is used for generating water pressure difference, the pressurized water can permeate through the filter core, the following pure water backflow branch and the waste water backflow branch can be controlled, and the filtering system can further comprise:
The pure water backflow branch circuit is intersected with the pure water discharge branch circuit at a first pure water backflow intersection point A, and the pure water backflow branch circuit is intersected with the raw water branch circuit at a second pure water backflow intersection point B;
the raw water branch is provided with a front device 5, and the front device 5 is used for buffering raw water of the raw water branch or/and discharging the returned pure water from the pure water outlet; the front device 5 is positioned downstream of the second pure water reflux intersection B and upstream of the pressurizing device 3;
the filtering system is used for performing flushing operation when judging that the water producing branch circuit meets flushing conditions, wherein the flushing operation comprises flushing of a first stage and/or flushing of a second stage;
during the first stage of flushing, the pure water reflux branch is used for refluxing pure water generated by the water producing branch to the front device 5 so as to push water in the front device 5 out to the pressurizing device 3 and then input the water producing branch to flush the filter element;
when the second stage flushing is carried out, the waste water discharge branch is opened, and the front device 5 is used for pushing out the water buffered by the front device to the supercharging device 3 in a high flow mode and inputting the water into the water production branch so as to burst the filter element;
the water producing branch is used for producing water in the first stage and producing water in the second stage when judging that the water producing branch meets the water producing condition;
The waste water discharge branch is used for discharging waste water at an opening degree smaller than a preset opening degree when water production in the first stage is carried out, so that pure water generated by the water production branch is discharged through the pure water discharge branch;
and when the water production of the second stage is carried out, the wastewater discharge branch is used for discharging wastewater at a preset opening degree so as to discharge pure water generated by the water production branch through the pure water discharge branch.
Therefore, the filter system described in the embodiment of the invention can provide a multi-stage flushing and water making control mechanism to effectively flush and make water for the filter system, so that the intelligent control level of the filter system is remarkably improved, the flushing efficiency of the filter element is improved, the water yield of the filter system is improved, the water quality of the cup water is improved, and the waste of water resources is avoided.
In an alternative embodiment, as shown in fig. 4, fig. 4 is a schematic structural diagram of another filtering system based on a circulation waterway, as shown in fig. 4, which may include:
a waste water reflux branch, wherein the waste water reflux branch and the waste water discharge branch are intersected at a first waste water reflux intersection point C, and the waste water reflux branch and the raw water branch are intersected at a second waste water reflux intersection point D; the second wastewater return junction D is located downstream of the pre-device 5 and upstream of the pressurizing device 3;
The waste water backflow branch is used for backflow of waste water discharged from the waste water outlet to the adding device 3 and then is input into the water production branch when the first-stage flushing is carried out, so that the water quality balance of the filter element is maintained; and closing the waste water discharge branch.
Therefore, the filtering system described in the embodiment of the invention can provide a multi-stage waterway control mechanism combining pure water and wastewater circulation, and after the filtering system is effectively washed, the operation of mixing water and preparing water is continuously carried out through the wastewater reflux circulation, so that the purposes of reutilizing the mixed water in the front device and the wastewater in the water preparing process are achieved, the aim of secondary water saving is fulfilled, the problem that the water quality value of the cup water is poor when a user takes water is solved, the water yield of the filtering system is improved, and the waste of water resources is avoided.
In an alternative embodiment, as shown in fig. 4, a pure water return valve assembly 1 is provided in the pure water return branch; a waste water reflux valve component 6 is arranged on the waste water reflux branch; the pure water discharge branch is provided with a pure water valve component; the waste water discharge branch is provided with a waste water valve component.
In another alternative embodiment, the filtration system further comprises:
a water quality detection device is arranged on a branch communicated with the wastewater outlet and is used for monitoring the real-time water quality value of the wastewater outlet;
Wherein, water quality testing device includes:
a first water quality detection device 4 arranged at the wastewater outlet; or/and the combination of the two,
the second water quality detection device 11 is arranged on the waste water return branch; or/and the combination of the two,
a third water quality detection device 12 is arranged on the waste water discharge branch.
Optionally, when the waste water reflux branch and the waste water discharge branch share part of the branch, the branch shared by the waste water reflux branch and the waste water discharge branch is provided with a waste water proportion device 10, and the waste water proportion device 10 is used for adjusting the water quantity proportion of waste water discharged by the waste water outlet to flow into the waste water reflux branch and the waste water discharge branch respectively.
Optionally, a fourth water quality detection device 7 is arranged at the water inlet of the filter element of the water producing branch, and the fourth water quality detection device 7 is used for detecting the water quality condition of the water inlet of the filter element.
Optionally, a fifth water quality detecting device 9 is disposed on the raw water branch, the fifth water quality detecting device 9 is located downstream of the second pure water backflow intersection B and upstream of the front device 5, and the fifth water quality detecting device 9 is configured to detect water quality of mixed water formed by mixing pure water discharged from the pure water outlet after backflow with raw water in the raw water branch.
Optionally, a sixth water quality detection device 8 is arranged on the raw water branch, the sixth water quality detection device 8 is located at the downstream of the front device 5 and at the upstream of the second wastewater reflux intersection point D, and the sixth water quality detection device 8 is used for detecting the water quality condition of the water output by the front device.
Example IV
Referring to fig. 5, fig. 5 is a schematic structural diagram of a filtering control device based on a circulating water channel according to an embodiment of the present invention. The apparatus described in fig. 5 may be a stand-alone apparatus, or may be integrated into a filtration processing device, which is not limited by the embodiment of the present invention. As shown in fig. 5, the filtering control device based on the circulation waterway may include:
a memory 401 storing executable program codes;
a processor 402 coupled with the memory 401;
the processor 402 invokes executable program codes stored in the memory 401 to perform some or all of the steps in the filtering method based on the circulation waterway disclosed in the first or second embodiment of the present invention.
Example five
The embodiment of the invention discloses a computer storage medium which stores computer instructions for executing the steps in the filtering method based on the circulating waterway disclosed in the first or second embodiment of the invention when the computer instructions are called.
The apparatus embodiments described above are merely illustrative, wherein the modules illustrated as separate components may or may not be physically separate, and the components shown as modules may or may not be physical, i.e., may be located in one place, or may be distributed over a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above detailed description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course by means of hardware. Based on such understanding, the foregoing technical solutions may be embodied essentially or in part in the form of a software product that may be stored in a computer-readable storage medium including Read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), one-time programmable Read-Only Memory (OTPROM), electrically erasable programmable Read-Only Memory (EEPROM), compact disc Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM) or other optical disc Memory, magnetic disc Memory, tape Memory, or any other medium that can be used for computer-readable carrying or storing data.
It should be noted that the computer program code required for operation of portions of the present description may be written in any one or more programming languages, including an object oriented programming language such as Java, scala, smalltalk, eiffel, JADE, emerald, C ++, c#, vb.net, python, etc., a conventional programming language such as C language, visual Basic, fortran2003, perl, COBOL 2002, PHP, ABAP, a dynamic programming language such as Python, ruby and Groovy, or other programming languages, etc. The program code may run entirely on the computer (PC, embedded smart device, etc.), on the user's computer as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any form of network, such as a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet), or the use of services such as software as a service (SaaS) in a cloud computing environment.
Finally, it should be noted that: the embodiment of the invention discloses a filtering method and a filtering device based on a circulating waterway, which are disclosed by the embodiment of the invention only for illustrating the technical scheme of the invention, but not limiting the technical scheme; although the invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that; the technical scheme recorded in the various embodiments can be modified or part of technical features in the technical scheme can be replaced equivalently; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (14)
1. The utility model provides a filtering method based on circulation water route, the method is applied to among the filtration system, filtration system includes raw water branch road, supercharging device, produces water branch road, waste water and discharges branch road and pure water and discharge the branch road, produce water branch road and include filter core water inlet, filter core, pure water export and waste water export, be equipped with supercharging device on the raw water branch road, supercharging device is used for producing the water pressure difference, supercharging device is located produce the upstream of water branch road, characterized in that, filtration system still includes pure water backward flow branch road, front-end device is located supercharging device's upstream, the method includes:
judging whether the water producing branch circuit meets flushing conditions or not;
when the water producing branch circuit is judged to meet the flushing condition, controlling the filtering system to execute flushing operation, wherein the flushing operation comprises flushing of a first stage and/or flushing of a second stage;
when the first-stage flushing is performed, controlling the filtering system to perform a first flushing operation, wherein the first flushing operation is used for returning pure water generated by the water generating branch to the front device through the pure water return branch so as to push water in the front device out of the pressurizing device and then input the water generating branch to flush the filter element;
When the second-stage flushing is carried out, controlling the filtering system to execute a second flushing operation, wherein the second flushing operation is used for starting the waste water discharge branch, pushing water in the front device to the pressurizing device in a high-flow mode, and then inputting the water into the water production branch to burst the filter element;
judging whether the water producing branch circuit meets the water producing condition or not;
when the water producing branch circuit meets the water producing condition, controlling the filtering system to execute water producing in the first stage and water producing in the second stage;
when the water making of the first stage is carried out, controlling the filtering system to execute a first water making operation, wherein the first water making operation is used for controlling the waste water discharge branch to discharge waste water at an opening smaller than a preset opening so as to discharge pure water generated by the water production branch through the pure water discharge branch;
and when the water making of the second stage is performed, controlling the filtering system to execute a second water making operation, wherein the second water making operation is used for controlling the wastewater discharge branch to discharge wastewater at the preset opening degree so as to discharge pure water generated by the water production branch through the pure water discharge branch.
2. The method of circulating waterway-based filtration of claim 1, wherein the filtration system further comprises a wastewater return leg;
While performing the first stage flush, the method further comprises:
controlling the waste water backflow branch to execute a first waste water backflow operation, wherein the first waste water backflow operation is used for backflow of waste water discharged from the waste water outlet to the supercharging device and then inputting the waste water into the water production branch so as to maintain the water quality balance of the filter element; and closing the waste water discharge branch.
3. The method of circulating water path-based filtration of claim 2, wherein in performing the first stage of water production, the method further comprises:
and controlling the waste water backflow branch to execute a second waste water backflow operation, wherein the second waste water backflow operation is used for controlling the waste water backflow branch to backflow waste water discharged from the waste water outlet to the supercharging device and then inputting the waste water into the water production branch so as to discharge pure water generated by the water production branch through the pure water discharge branch.
4. A method of circulating waterway-based filtration according to claim 3, characterized in that the method further comprises:
judging whether the water production of the first stage is finished or not when the water production of the first stage is carried out, and starting the water production of the second stage when the water production of the first stage is judged to be finished;
Wherein, the judging whether the water making in the first stage is completed comprises:
judging whether the duration of the water making in the first stage exceeds a first preset duration, and determining that the water making in the first stage is completed when judging that the duration of the water making in the first stage exceeds the first preset duration; or alternatively, the process may be performed,
judging whether the first water quality value of the wastewater outlet exceeds a first water quality threshold value, and determining that the water production in the first stage is completed when the first water quality value of the wastewater outlet exceeds the first water quality threshold value.
5. The method of circulating waterway-based filtering according to claim 3 or 4, the method further comprising:
and when the water making in the first stage or the water making in the second stage is carried out, controlling the waste water backflow branch to execute closing operation when judging that the first water quality value of the waste water outlet exceeds a second water quality threshold value or when judging that the second water quality value of the water inlet of the filter element exceeds a third water quality threshold value.
6. The method according to claim 5, wherein the determining that the water producing branch meets the flushing condition comprises:
Judging whether the first water quality value of the wastewater outlet exceeds a fourth water quality threshold, and determining that the water producing branch meets the flushing condition when the first water quality value exceeds the fourth water quality threshold; or alternatively, the process may be performed,
judging whether the third water quality value of the pure water outlet exceeds a fifth water quality threshold value, and determining that the water producing branch meets the flushing condition when the third water quality value exceeds the fifth water quality threshold value; or alternatively, the process may be performed,
judging whether the fourth water quality value of the pure water discharge branch exceeds a sixth water quality threshold, and determining that the water producing branch meets the flushing condition when the fourth water quality value exceeds the sixth water quality threshold; or alternatively, the process may be performed,
judging whether the time difference between the current time point and the time point when the last flushing of the water producing branch is finished exceeds a second preset duration, and determining that the water producing branch meets the flushing condition when the time difference between the current time point and the time point when the last flushing of the water producing branch is finished exceeds the second preset duration; or alternatively, the process may be performed,
judging whether the working time length of the water producing branch circuit exceeds a third preset time length, and determining that the water producing branch circuit meets the flushing condition when the working time length of the water producing branch circuit exceeds the third preset time length, wherein the working time length comprises the total time length of single water producing working time length or the latest N water producing working time lengths; or alternatively, the process may be performed,
Judging whether the water production amount of the water producing branch exceeds a preset water amount, and determining that the water producing branch meets the flushing condition when judging that the water production amount of the water producing branch exceeds the preset water amount, wherein the water production amount comprises the water production amount of a single time or the total water production amount of the latest N times; or alternatively, the process may be performed,
judging whether the water production times of the water production branch circuit exceeds preset water production times, and determining that the water production branch circuit meets the flushing condition when judging that the water production times of the water production branch circuit exceeds the preset water production times, wherein the water production times comprise the sum of the water production times between the current time point and the time point when the latest flushing of the water production branch circuit is finished or the total water production times in the water production life cycle of the water production branch circuit.
7. Filtration system based on circulation water route, filtration system includes raw water branch road, supercharging device, produces water branch road, waste water and discharges the branch road and pure water, produce water branch road and include filter core water inlet, filter core, pure water export and waste water export, be equipped with supercharging device on the raw water branch road, supercharging device is used for producing the water pressure difference, supercharging device is located produce the upper reaches of water branch road, its characterized in that, filtration system still includes:
The pure water backflow branch circuit and the pure water discharge branch circuit are intersected at a first pure water backflow intersection point, and the pure water backflow branch circuit and the raw water branch circuit are intersected at a second pure water backflow intersection point;
the raw water branch is provided with a front device which is used for buffering raw water of the raw water branch or/and the pure water outlet to discharge the returned pure water; the front device is positioned downstream of the second pure water reflux cross point and upstream of the pressurizing device;
the filtering system is used for performing flushing operation when judging that the water producing branch circuit meets flushing conditions, wherein the flushing operation comprises flushing of a first stage and/or flushing of a second stage;
when the first-stage flushing is carried out, the pure water backflow branch is used for backflow of pure water generated by the water production branch to the front device so as to push water in the front device out of the pressurizing device and then input the water production branch to flush the filter element;
when the second stage flushing is carried out, the waste water discharge branch is opened, and the front device is used for pushing out the water buffered by the front device to the pressurizing device in a high flow mode and then inputting the water to the water production branch so as to burst the filter element;
The water producing branch is used for producing water in the first stage and producing water in the second stage when judging that the water producing branch meets the water producing condition;
wherein, when the water production in the first stage is carried out, the waste water discharge branch is used for discharging waste water with the opening degree smaller than the preset opening degree so as to discharge pure water generated by the water production branch through the pure water discharge branch;
and when water production in the second stage is performed, the waste water discharge branch is used for discharging waste water at the preset opening degree so as to discharge pure water generated by the water production branch through the pure water discharge branch.
8. The recirculation waterway-based filtration system of claim 7, further comprising:
a waste water return branch, wherein the waste water return branch and the waste water discharge branch are intersected at a first waste water return intersection point, and the waste water return branch and the raw water branch are intersected at a second waste water return intersection point; the second wastewater reflux intersection point is positioned at the downstream of the front device and at the upstream of the supercharging device;
when the first-stage flushing is carried out, the waste water reflux branch is used for refluxing the waste water discharged from the waste water outlet to the supercharging device and then inputting the waste water into the water producing branch so as to maintain the water quality balance of the filter element; the waste water discharge branch is closed.
9. The recirculation waterway-based filtration system of claim 8, wherein the purified water return branch is provided with a purified water return valve assembly; the waste water reflux branch is provided with a waste water reflux valve component; the pure water discharge branch is provided with a pure water valve component; and a wastewater valve assembly is arranged on the wastewater discharge branch.
10. The recirculation waterway-based filtration system of claim 9, further comprising:
a water quality detection device is arranged on a branch communicated with the wastewater outlet and is used for monitoring the real-time water quality value of the wastewater outlet;
wherein, water quality testing device includes:
the first water quality detection device is arranged at the wastewater outlet; or/and the combination of the two,
the second water quality detection device is arranged on the waste water return branch; or/and the combination of the two,
and a third water quality detection device arranged on the waste water discharge branch.
11. The circulation waterway-based filtering system according to claim 9 or 10, wherein when the waste water return branch and the waste water discharge branch share a partial branch, the waste water return branch and the waste water discharge branch share a branch provided with waste water proportion means for adjusting the water proportions of waste water discharged from the waste water outlet flowing into the waste water return branch and the waste water discharge branch, respectively.
12. The filtering system based on the circulating waterway of claim 11, wherein a fourth water quality detecting device is arranged at a water inlet of a filter element of the water producing branch, and the fourth water quality detecting device is used for detecting water quality of the water inlet of the filter element.
13. The circulating waterway-based filtration system of claim 12, wherein a fifth water quality detection device is provided on the raw water branch, the fifth water quality detection device being located downstream of the second pure water backflow crossing point and upstream of the front device, the fifth water quality detection device being configured to detect a water quality condition of mixed water formed by mixing pure water discharged from the pure water outlet with raw water in the raw water branch after backflow.
14. The circulating waterway-based filtration system of claim 13, wherein a sixth water quality detection device is disposed on the raw water branch, the sixth water quality detection device being downstream of the pre-device and upstream of the second wastewater return junction, the sixth water quality detection device being configured to detect a water quality condition of water output from the pre-device.
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| CN202210169998.2A CN116675292A (en) | 2022-02-23 | 2022-02-23 | Filtering method and filtering system based on circulating waterway |
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| CN202210169998.2A CN116675292A (en) | 2022-02-23 | 2022-02-23 | Filtering method and filtering system based on circulating waterway |
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