CN116692999A

CN116692999A - Intelligent water purification control method and water purification system

Info

Publication number: CN116692999A
Application number: CN202210174579.8A
Authority: CN
Inventors: 陈小平; 李大川; 吕苏; 董红晨
Original assignee: Foshan Viomi Electrical Technology Co Ltd
Current assignee: Foshan Viomi Electrical Technology Co Ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2023-09-05

Abstract

The invention discloses an intelligent water purification control method which is applied to a water purification system, wherein the water purification system comprises a raw water branch, a supercharging device, a water production branch, a wastewater discharge branch, a pure water discharge branch and a supercharging device, when judging that the water production branch meets the flushing condition, the water purification system is controlled to execute flushing operation, and the flushing operation comprises flushing in a first stage, flushing in a second stage and flushing in a third stage; when the water producing branch circuit meets the water producing condition, controlling the water purifying system to execute the water producing in the first stage and the water producing in the second stage. Therefore, the invention can provide a multi-stage flushing and water production control mechanism, adopts a structure of double filter components, effectively flushes and produces water for the water purification system through flushing operation among the filter unit groups and the explosion flushing process of the front device, improves the intelligent control level of the water purification system, improves the flushing efficiency of the filter element, improves the water yield of the water purification system, improves the water quality of the cup water, and avoids the waste of water resources.

Description

Intelligent water purification control method and water purification system

Technical Field

The invention relates to the field of water purification, in particular to an intelligent water purification control method and a water purification system.

Background

With the rapid development of water purification technology, water purifiers which filter through devices such as reverse osmosis pressure membranes and the like are becoming popular, but concentrated wastewater stays in the reverse osmosis membrane device all the time after long-time use, so that salt or other soluble solids are attached to the reverse osmosis pressure membranes, and the service life of the reverse osmosis pressure membranes is reduced. Therefore, the water purifier needs to be frequently washed.

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, the flushing method can lead to the water purifier to discharge more wastewater in the flushing process, thereby reducing the water production efficiency of the water purifier and wasting water resources.

Therefore, it is important to provide an intelligent water purification control method to improve the washing and water production efficiency.

Disclosure of Invention

The invention provides an intelligent water purification control method and a water purification system, which can provide a multi-stage flushing and water production control mechanism, adopt a structure of double filter assemblies, achieve the purpose of rapid flushing by flushing operation among filter unit groups and the explosion flushing process of a front device, save the water consumption in the flushing process, effectively flush and produce water for the water purification system, obviously improve the intelligent control level of the water purification system, improve the flushing efficiency of a filter element, improve the water yield of the water purification system, promote the water quality of cup water and avoid the waste of water resources.

In order to solve the technical problem, the first aspect of the present invention discloses an intelligent water purification control method, the method is applied in a water purification system, the water purification system includes a raw water branch, a supercharging device, a water producing branch, a wastewater discharging branch and a pure water discharging branch, 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 intelligent water purification control method is characterized in that the raw water branch is further provided with a front device, the water producing branch includes a first filtering unit group and a second filtering unit group, the first filtering unit group includes a first filter element water inlet, a first filter element assembly, a first wastewater outlet and a first pure water outlet, the second filtering unit group includes a second filter element water inlet, a second filter element assembly, a second wastewater outlet and a second pure water outlet, the first wastewater outlet is connected with the second filter element water inlet, the first pure water outlet and the second pure water outlet are connected with the pure water discharging branch, the first pure water outlet is further connected with a first pure water reflux branch, the second pure water outlet is further connected with the wastewater discharging branch, and the method includes the steps of:

Judging whether the water producing branch circuit meets flushing conditions or not;

when the water producing branch circuit meets the flushing condition, controlling the water purifying system to execute flushing operation, wherein the flushing operation comprises flushing of a first stage, flushing of a second stage and/or flushing of a third stage;

when the water purification system is subjected to the first-stage flushing, controlling the water purification system to execute a first flushing operation, wherein the first flushing operation is used for respectively refluxing pure water generated by the first filtering unit group and the second filtering unit group to the front-end device through the first pure water reflux branch and the second pure water reflux branch so as to push water in the front-end device to the supercharging device, and then inputting the water to the water-producing branch so as to flush the first filter element assembly and the second filter element assembly;

when the second stage flushing is performed, controlling the water purification system to perform a second flushing operation, wherein the second flushing operation is used for closing the first pure water backflow branch and backflow pure water generated by the second filtering unit group to the front device through the second pure water backflow branch so as to push water in the front device out of the pressurizing device and then input the water production branch to flush the first filter element assembly and the second filter element assembly;

When the water purification system is subjected to flushing in the third stage, controlling the water purification system to execute a third flushing operation, wherein the third 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 to the water production branch so as to perform burst flushing on the first filter element assembly and the second filter element assembly;

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 water purifying system to execute water producing in the first stage and water producing in the second stage;

when the water production in the first stage is carried out, controlling the water purification system to execute a first water production operation, wherein the first water production operation is used for controlling pure water generated by the second filter unit group to flow back through the second pure water backflow branch, then mixing the pure water with raw water, inputting the mixture into the front device, and then inputting the mixture into the first filter unit group through the supercharging device, so that pure water generated by the first filter unit group is discharged through the pure water discharge branch;

and when the water making of the second stage is performed, controlling the water purifying system to execute a second water making operation, wherein the second water making operation is used for discharging pure water generated by the first filtering unit group and the second filtering unit group through the pure water discharging branch respectively.

As an optional implementation manner, in the first aspect of the present invention, the second waste water outlet is further connected to a waste water reflux 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 by the second waste water outlet to the adding device and then inputting the waste water into the water production branch so as to maintain water quality balance of the first filter element assembly and the second filter element assembly; 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 the waste water discharged from the second waste water outlet to the supercharging device and then inputting the waste water into the first filtering unit group so as to discharge pure water generated by the first filtering unit group 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 second wastewater outlet exceeds a first water quality threshold value, and determining that the water production in the first stage is completed when judging that the first water quality value of the second wastewater outlet exceeds the first water quality threshold value.

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 second 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 first filter element exceeds a third water quality threshold value.

In an optional implementation manner, in the first aspect of the present invention, the determining whether the water producing branch meets the flushing condition includes:

judging whether the third water quality value of the first 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 first water quality value of the second wastewater outlet exceeds a fifth water quality threshold, and determining that the water producing branch meets the flushing condition when the first water quality value exceeds the fifth water quality threshold; or alternatively, the process may be performed,

judging whether a fourth water quality value of the first pure water outlet 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 a fifth water quality value of the second pure water outlet exceeds a seventh water quality threshold, and determining that the water producing branch meets the flushing condition when the fifth water quality value exceeds the seventh water quality threshold; or alternatively, the process may be performed,

judging whether a sixth water quality value of the pure water discharge branch exceeds an eighth water quality threshold, and determining that the water producing branch meets the flushing condition when the sixth water quality value exceeds the eighth 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 an intelligent water purification system, the water purification system includes a raw water branch, a water producing branch, a waste water discharging branch and a pure water discharging branch, the raw water branch is provided with a pressurizing device, the pressurizing device is used for generating a water pressure difference, and the pressurizing device is located at the upstream of the water producing branch, the intelligent water purification system is characterized in that the intelligent water purification system further includes:

the water producing branch comprises a first filter unit group and a second filter unit group, the first filter unit group comprises a first filter element water inlet, a first filter element assembly, a first waste water outlet and a first pure water outlet, the second filter unit group comprises a second filter element water inlet, a second filter element assembly, a second waste water outlet and a second pure water outlet, the first waste water outlet is connected with the second filter element water inlet, and the first pure water outlet and the second pure water outlet are both connected with the pure water discharging branch;

a first pure water return branch, which is intersected with the pure water discharge branch at a first pure water return intersection point, and which is intersected with the raw water branch at a second pure water return intersection point; a second pure water reflux branch, one end of which is connected to the second pure water outlet, and the other end of which is intersected with the first pure water reflux branch at a third pure water reflux intersection point, wherein the third pure water reflux intersection point is positioned between the first pure water reflux intersection point and the second pure water reflux intersection point;

The raw water branch is also provided with a front device which is used for buffering raw water of the raw water branch and/or pure water refluxed by the first pure water reflux branch and/or pure water refluxed by the second pure water reflux branch; the front device is positioned downstream of the second pure water reflux cross point and upstream of the pressurizing device;

the water purification system is used for performing flushing operation when judging that the water producing branch circuit meets flushing conditions, wherein the flushing operation comprises flushing at a first stage, and/or flushing at a second stage and/or flushing at a third stage;

when the first stage of flushing is performed, the first pure water backflow branch and the second pure water backflow branch are used for respectively reflowing pure water generated by the first filtering unit group and the second filtering unit group 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 first filter element assembly and the second filter element assembly;

when the second-stage flushing is performed, the first pure water backflow branch is closed, and the second pure water backflow branch is used for backflow of pure water generated by the second filtering unit group 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 first filter element assembly and the second filter element assembly;

When the third-stage flushing is carried out, the waste water discharge branch is opened, and the front device is used for pushing out the buffered water to the pressurizing device in a high-flow mode and then inputting the water to the water production branch so as to carry out the bursting of the first filter element component and the second filter element component;

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;

when water is produced in the first stage, the second pure water backflow branch is used for backflow of pure water generated by the second filtering unit group, mixing the pure water with raw water, inputting the mixture into the front device, and inputting the mixture into the first filtering unit group through the pressurizing device so as to discharge the pure water generated by the first filtering unit group through the pure water discharge branch;

and when the water production of the second stage is carried out, the water production branch is used for discharging pure water generated by the first filtering unit group and the second filtering unit group through the pure water discharge branch respectively.

As an alternative embodiment, in the second aspect of the present invention, the water purification 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 upstream of the supercharging device;

Wherein, when the first-stage flushing is performed, the waste water reflux branch is used for refluxing the waste water discharged by the second 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 first filter element component and the second filter element component; the waste water discharge branch is closed.

As an alternative embodiment, in the second aspect of the present invention, a first pure water reflux valve assembly and a second pure water reflux valve assembly are provided on the first pure water reflux branch, the first pure water reflux valve assembly is located between the first pure water reflux intersection point and the third pure water reflux intersection point, and the second pure water reflux valve assembly is located between the second pure water reflux intersection point and the third pure water reflux intersection point; 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.

a water quality detection device is arranged on a branch communicated with the second wastewater outlet and is used for monitoring the real-time water quality value of the second wastewater outlet;

Wherein, water quality testing device includes:

the first water quality detection device is arranged at the second 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 first wastewater outlet, and the fourth water quality detection device is configured to detect a water quality condition of the first wastewater outlet.

In a second aspect of the present invention, a fifth water quality detection device is provided on the first pure water return branch, the fifth water quality detection device being located between the first pure water outlet and the first pure water return intersection, the fifth water quality detection device being configured to detect a water quality condition of the first pure water outlet.

In a second aspect of the present invention, a sixth water quality detection device is provided on the second pure water return branch, the sixth water quality detection device being located between the second pure water outlet and the third pure water return intersection, the sixth water quality detection device being configured to detect a water quality condition of the second pure water outlet.

In a second aspect of the present invention, a seventh water quality detection device is disposed on the raw water branch, the seventh water quality detection device being located between the second pure water backflow intersection and the first filter element water inlet, and the seventh water quality detection device being configured to detect a water quality condition of the first filter element water inlet.

In a third aspect, the present invention discloses another intelligent water purification control device, which 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 one of the intelligent water purification control methods disclosed in the first aspect of the present invention.

A fourth aspect of the present invention discloses a computer storage medium storing computer instructions that, when invoked, are used to perform part or all of the steps of any one of the intelligent water purification control methods disclosed in the first aspect of the present invention.

Compared with the prior art, the invention has the following beneficial effects:

the invention discloses an intelligent water purification control method which is applied to a water purification system, wherein the water purification system comprises a raw water branch, a supercharging device, a water production branch, a wastewater discharge branch, a pure water discharge branch and a supercharging device, when judging that the water production branch meets the flushing condition, the water purification system is controlled to execute flushing operation, and the flushing operation comprises flushing in a first stage, flushing in a second stage and flushing in a third stage; when the water producing branch circuit meets the water producing condition, controlling the water purifying system to execute the water producing in the first stage and the water producing in the second stage. Therefore, the invention can provide a multi-stage flushing and water production control mechanism, adopts a structure of double filter components, effectively flushes and produces water for the water purification system through flushing operation among the filter unit groups and the explosion flushing process of the front device, obviously improves the intelligent control level of the water purification system, improves the flushing efficiency of the filter element, improves the water yield of the water purification system, improves the water quality of the cup water, and avoids 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 an intelligent water purification control method disclosed in an embodiment of the invention;

FIG. 2 is a schematic flow chart of another intelligent water purification control method disclosed in the embodiment of the invention;

FIG. 3 is a schematic diagram of an intelligent water purification system according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of another intelligent water purification system according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an intelligent water purification control device according to an embodiment of the present invention.

The reference numerals in the drawings represent the following meanings: a first filter element group 1; a second filter element group 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 first pure water return valve assembly 7; a second pure water return valve assembly 8; a pure water valve assembly 9; a wastewater proportioning device 10; a second water quality detection device 11; a third water quality detection device 12; a fourth water quality detection device 13; a sixth water quality detection device 14; a seventh water quality detecting device 15; a fifth water quality detection device 16; a waste valve assembly 17; a first pure water reflux cross point A; a second pure water reflux cross point B; a third pure water reflux cross point C; a first wastewater reflux crossover point D; and the second wastewater flows back to the cross point E.

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 an intelligent water purification control method and device, which can provide a multi-stage flushing and water production control mechanism, adopt a structure of double filter components, achieve the purpose of rapid flushing by flushing operation among filter unit groups and the explosion flushing process of a front device, save the water consumption in the flushing process, effectively flush and produce water for a water purification system, obviously improve the intelligent control level of the water purification system, improve the flushing efficiency of a filter element, improve the water yield of the water purification system, improve the water quality of head cup water and avoid the waste of water resources. The following will explain in detail.

Example 1

Referring to fig. 1, fig. 1 is a schematic flow chart of an intelligent water purifying control method according to an embodiment of the invention. As shown in fig. 1, the intelligent water purification control method may include the following operations:

101. judging whether the water producing branch circuit meets the flushing condition.

In the embodiment of the invention, the water purification system comprises a raw water branch, a supercharging device, a water production branch, a wastewater discharge branch and a pure water discharge branch, wherein 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 production branch, the water production branch comprises a first filter unit group and a second filter unit group, the first filter unit group comprises a first filter element water inlet, a first filter element assembly, a first wastewater outlet and a first pure water outlet, the second filter unit group comprises a second filter element water inlet, a second filter element assembly, a second wastewater outlet and a second pure water outlet, the first wastewater outlet is connected with the second filter element water inlet, the first pure water outlet and the second pure water outlet are both connected with the pure water discharge branch, the first pure water outlet is also connected with a first pure water reflux branch, the second pure water outlet is also connected with a second pure water reflux branch, and the second wastewater outlet is connected with the wastewater discharge branch. The raw water branch is also provided with a front device, the front device is positioned at the upstream of the pressurizing device, and the second waste water outlet is also connected with a waste water backflow branch. Raw water flows through the front device and is pressurized by the pressurizing device, then is input into the first filtering unit group, is filtered into pure water and waste water by the first filtering unit group, and pure water can flow back to the upstream of the front device through the first 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 waste water can be input into the second filtering unit group, and is continuously filtered into pure water and waste water by the second filtering unit group, the pure water can be input into a water producing waterway through a supercharging device after flowing back to the upstream of the front device through the second pure water backflow branch, and can be discharged through the pure water discharge branch, and the waste water can be directly discharged through the waste water 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 water purifying system to execute a flushing operation, wherein the flushing operation comprises a first-stage flushing, a second-stage flushing and/or a third-stage flushing.

In the embodiment of the invention, when judging that the water producing branch circuit meets the flushing condition, the first filter element component and/or the second filter element component are required to be flushed, and the flushing of the filter element in the embodiment of the invention is divided into three stages: a first stage rinse, and/or a second stage rinse, and/or a third stage rinse. The three stage rinse sequence is not limiting in this embodiment.

103. When the first-stage flushing is performed, the water purifying system is controlled to execute a first flushing operation.

In the embodiment of the invention, the first flushing operation is used for respectively refluxing pure water generated by the first filtering unit group and the second filtering unit group to the front device through the first pure water reflux branch and the second pure water reflux branch so as to push water in the front device out of the pressurizing device and then input the water to the water generating branch so as to flush the first filter element component and the second filter element component. The pure water generated by the first filtering unit group and the second filtering unit group is refluxed through the first flushing operation, the raw water in the front device is diluted into low-concentration water, and at the moment, the waste water discharge branch can be discharged at a small flow rate or closed (the waste water discharge branch can be closed firstly and then discharged at a small flow rate, or a certain flow rate is discharged firstly and then the discharge flow rate is gradually reduced to be closed, and the embodiment of the invention is not limited). The amount of wastewater discharged is equal to the amount of water fed through the raw water branch, and the lower the amount of wastewater discharged, the lower the water concentration after dilution in the front-end device.

104. And controlling the water purifying system to execute a second flushing operation when the flushing in the second stage is performed.

In the embodiment of the invention, the second flushing operation is used for closing the first pure water backflow branch and backflow pure water generated by the second filtering unit group to the front device through the second pure water backflow branch so as to push water in the front device out to the supercharging device and then input the water production branch to flush the first filter element assembly and the second filter element assembly. And through the second flushing operation, only pure water generated by the second filtering unit group is used for continuously diluting the water in the front device, so that the salt content in the flushed filter element is further reduced.

105. And controlling the water purifying system to execute a third flushing operation when flushing in the third stage is carried out.

In the embodiment of the invention, the third flushing operation is used for opening the waste water discharge branch, pushing water in the front device to the supercharging device in a high-flow mode, and then inputting the water into the water production branch so as to perform burst flushing on the first filter element assembly and the second filter element assembly. At this time, the waste water discharge branch adopts a large flow opening state, and the low-concentration water in the front device is quickly flushed into the waste water filtering side of the first filter element assembly and/or the second filter element assembly, and the high-concentration waste water on the waste water filtering side is flushed and replaced. Because the opening degree of the waste water discharge branch is large at this time, the inflow water of the first filter element assembly and/or the second filter element assembly is hardly concentrated, and the waste water concentration on the waste water filtering side in the whole filter assembly is almost equal to the concentration on the inflow water side of the filter assembly, so that the average water concentration of the whole filter assembly is extremely low (equilibrium concentration).

It should be noted that the whole flushing operation may include any one, two or three of the first stage flushing, the second stage flushing and the third stage flushing, which is not limited by the embodiment of the present invention.

106. Judging whether the water producing branch circuit meets the water producing condition.

107. When the water producing branch circuit meets the water producing condition, controlling the water purifying system to execute the water producing in the first stage and the water producing in the second stage.

108. And controlling the water purifying system to execute the first water making operation when the first stage water making is carried out.

In the embodiment of the invention, the first water making operation is used for controlling the pure water generated by the second filtering unit group to flow back through the second pure water backflow branch, then mixing the pure water with raw water, inputting the mixture into the front device, and then inputting the mixture into the first filtering unit group through the pressurizing device so as to discharge the pure water generated by the first filtering unit group through the pure water discharge branch. In the first water production operation process, the waste water discharge branch can be opened, or can be closed for a period of time and then opened, and the embodiment of the invention is not limited, so that the waste water discharge amount can be reduced, and the water consumption is saved. At this time, only the pure water generated by the second filter unit group is returned, mixed with the raw water, input into the front-end device, and then enters the first filter unit group through the pressurizing device, and the pure water generated by the first filter unit group is used.

109. And controlling the water purifying system to execute a second water making operation when the second stage of water making is carried out.

In the embodiment of the invention, the second water making operation is used for discharging pure water generated by the first filtering unit group and the second filtering unit group through the pure water discharging branch respectively.

Therefore, the method described by the embodiment of the invention can provide a multi-stage flushing and water production control mechanism, adopts a structure of double filter assemblies, achieves the purpose of rapid flushing by flushing operation among the filter unit groups and the explosion flushing process of the front device, saves the water consumption in the flushing process, effectively flushes and produces water for the water purification system, obviously improves the intelligent control level of the water purification system, improves the flushing efficiency of the filter element, improves the water yield of the water purification system, improves the water quality of the cup water, and avoids 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 second wastewater outlet exceeds a first water quality threshold value, and determining that the water production of the first stage is completed when the first water quality value of the second 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 multi-stage flushing and water production control mechanism, adopts a structure of double filter assemblies, achieves the purpose of rapid flushing, saves the water consumption in the flushing process, provides a flexible control mode, realizes accurate segmentation of the water production stage, is beneficial to realizing the fine regulation level of the water production process, and further improves the water yield of the filter system by adopting the flushing operation among the filter unit groups and the flushing process of the front device.

In another alternative embodiment, determining whether the water producing branch meets the flush condition may include the operations of:

judging whether the third water quality value of the first 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 fourth water quality value of the first pure water outlet 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 fifth water quality value of the second pure water outlet exceeds a seventh water quality threshold value, and determining that the water producing branch meets the flushing condition when the fifth water quality value exceeds the seventh water quality threshold value; or alternatively, the process may be performed,

judging whether the sixth water quality value of the pure water discharge branch exceeds an eighth water quality threshold, and determining that the water producing branch meets the flushing condition when the sixth water quality value exceeds the eighth 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 flushing and water production control mechanism, adopts a structure of double filter assemblies, achieves the purpose of rapid flushing by flushing operation among filter unit groups and the explosion flushing process of a front device, saves water consumption in the flushing process, and simultaneously provides a plurality of methods for detecting whether the filter element meets flushing conditions or not, so that the use 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 an incoming system is improved.

Example two

Referring to fig. 2, fig. 2 is a flow chart of another intelligent water purifying control method according to an embodiment of the invention. As shown in fig. 2, the intelligent water purification control method may include the following operations:

201. judging whether the water producing branch circuit meets the flushing condition.

202. And when judging that the water producing branch circuit meets the flushing condition, controlling the water purifying system to execute the flushing operation.

203. When the first-stage flushing is performed, the water purification system is controlled to perform the first flushing operation, and the wastewater reflux branch is controlled to perform the first wastewater reflux operation.

In the embodiment of the invention, the first wastewater reflux operation is used for refluxing the wastewater discharged by the second wastewater outlet to the adding device and then inputting the wastewater to the water producing branch so as to maintain the water quality balance of the first filter element component and the second filter element component; and closing the waste water discharge branch. When the first-stage flushing is carried out, the waste water is returned to the downstream of the front-end device through the first waste water return operation, and is input into the water producing branch through the supercharging device, so that the TDS balance of the filter element assembly can be maintained, and at the moment, the waste water discharging branch can be closed to save flushing water.

204. And controlling the water purifying system to execute a second flushing operation when the flushing in the second stage is performed.

205. And controlling the water purifying system to execute a third flushing operation when flushing in the third stage is carried out.

206. Judging whether the water producing branch circuit meets the water producing condition.

207. When the water producing branch circuit meets the water producing condition, controlling the water purifying system to execute the water producing in the first stage and the water producing in the second stage.

208. When the water making in the first stage is carried out, the water purifying system is controlled to execute the first water making operation, and the waste water backflow branch is controlled to execute the second waste water backflow operation.

In the embodiment of the invention, the second wastewater reflux operation is used for controlling the wastewater reflux branch to reflux the wastewater discharged from the second wastewater outlet to the supercharging device and then inputting the wastewater into the first filtering unit group so as to discharge pure water generated by the first filtering unit group through the pure water discharge branch. And when the water making in the first stage is carried out, the pure water generated by the second filtering unit group flows back to the upstream of the front device, meanwhile, the waste water generated by the second filtering unit group flows back to the downstream of the front device through the waste water backflow branch, and the waste water is mixed at the supercharging device and then is input into the first filtering unit group so as to discharge the pure water generated by the first filtering unit group through the pure water discharge branch.

209. And controlling the water purifying system to execute a second water making operation when the second stage of water making is carried out.

In the embodiment of the present invention, for other descriptions of step 201 to step 209, please refer to the detailed descriptions of step 101 to step 109 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 flushing and water production control mechanism, adopts a structure of double filter assemblies, achieves the aim of rapid flushing, saves the water consumption in the flushing process through the flushing operation among the filter unit groups and the flushing process of the front-end device, and simultaneously continuously carries out the operation of mixing water and producing water through the backflow circulation of the wastewater, thereby realizing the aim of reutilizing the mixing water in the front-end device and the wastewater in the water production process, realizing the aim of secondary water saving, solving the problem of poor water quality value of the head cup water when a user takes water, improving the water yield of the water purifier and avoiding the waste of water resources.

In an alternative embodiment, the method may further comprise:

when the water is produced in the first stage or in the second stage, the waste water backflow branch is controlled to execute closing operation when the first water quality value of the second waste water outlet exceeds the second water quality threshold value or when the second water quality value of the water inlet of the first filter element exceeds the third water quality threshold value.

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 multi-stage flushing and water production control mechanism, adopts a structure of double filter assemblies, achieves the purpose of rapid flushing, saves the water consumption in the flushing process and provides a flexible control mode through flushing operation among the filter unit groups and the explosion flushing process of the front device, and the method can dynamically adjust the use proportion of wastewater circulation without increasing the salinity of the filter element, thereby achieving the level of fine regulation and control of wastewater backflow, being beneficial to realizing the accurate flushing of the filter element, improving the recycling ratio of wastewater, and further improving the water production and water yield of the filter system.

Example III

Referring to fig. 3, fig. 3 is a schematic structural diagram of an intelligent water purification system according to an embodiment of the invention. As shown in fig. 3, the intelligent water purification system includes a raw water branch, a water producing branch, a waste water discharging branch and a pure water discharging branch, wherein the raw water branch is provided with a pressurizing device 3, the pressurizing device 3 is used for generating water pressure difference, so that pressurized water can permeate through a filter element, the pure water backflow branch and the waste water backflow branch can be controlled, the pressurizing device 3 is positioned at the upstream of the water producing branch, the filter element can be a common filter element or a reverse osmosis filter element, and the embodiment of the invention is not limited. The water purification system may further include:

The water producing branch comprises a first filter unit group 1 and a second filter unit group 2, wherein the first filter unit group 1 comprises a first filter element water inlet, a first filter element component, a first waste water outlet and a first pure water outlet, the second filter unit group 2 comprises a second filter element water inlet, a second filter element component, a second waste water outlet and a second pure water outlet, the first waste water outlet is connected with the second filter element water inlet, and the first pure water outlet and the second pure water outlet are both connected with the pure water discharging branch;

the first pure water reflux branch circuit is intersected with the pure water discharge branch circuit at a first pure water reflux intersection point A, and the first pure water reflux branch circuit is intersected with the raw water branch circuit at a second pure water reflux intersection point B; one end of the second pure water reflux branch is connected to the second pure water outlet, the other end of the second pure water reflux branch and the first pure water reflux branch are intersected at a third pure water reflux intersection point C, and the third pure water reflux intersection point C is positioned between the first pure water reflux intersection point A and the second pure water reflux intersection point B;

the raw water branch is also provided with a pre-device 5, and the pre-device 5 is used for buffering raw water of the raw water branch and/or pure water returned by the first pure water return branch and/or pure water returned by the second pure water return branch; the front device 5 is positioned downstream of the second pure water reflux intersection B and upstream of the pressurizing device 3;

The water purification 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, flushing of a second stage and/or flushing of a third stage;

when the first stage of flushing is performed, the first pure water backflow branch and the second pure water backflow branch are used for respectively reflowing pure water generated by the first filtering unit group 1 and the second filtering unit group 2 to the front device 5 so as to push water in the front device 5 out to the supercharging device 3 and then input the water production branch to flush the first filter element component and the second filter element component;

when the second stage of flushing is performed, the first pure water backflow branch is closed, and the second pure water backflow branch is used for backflow of pure water generated by the second filtering unit group 2 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 production branch to flush the first filter element assembly and the second filter element assembly;

when the third-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 carry out the bursting of the first filter element component and the second filter element component;

when water is produced in the first stage, the second pure water backflow branch is used for backflow of pure water generated by the second filter unit group 2, mixing the pure water with raw water, inputting the mixture into the front device 5, and inputting the mixture into the first filter unit group 1 through the pressurizing device 3 so as to discharge the pure water generated by the first filter unit group 1 through the pure water discharge branch;

wherein, when the water production of the second stage is carried out, the water producing branch is used for discharging the pure water generated by the first filtering unit group 1 and the second filtering unit group 2 through the pure water discharging branch respectively.

Therefore, the intelligent water purification system described in the embodiment of the invention can provide a multi-stage flushing and water production control mechanism, adopts a structure of double filter assemblies, achieves the purpose of rapid flushing by flushing operation among filter unit groups and the explosion flushing process of a front device, saves the water consumption in the flushing process, effectively flushes and produces water for the water purification system, obviously improves the intelligent control level of the water purification system, improves the flushing efficiency of a filter element, improves the water yield of the water purification system, improves the water quality of head cup water, and avoids the waste of water resources.

In an alternative embodiment, as shown in fig. 4, the water purification system may further 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 D, and the waste water reflux branch and the raw water branch are intersected at a second waste water reflux intersection point E; the second wastewater return junction E is located upstream of the pressurizing device 3;

wherein, when the first stage flushing is carried out, the waste water reflux branch is used for refluxing the waste water discharged by the second waste water outlet to the adding device 3 and then inputting the waste water into the water producing branch so as to maintain the water quality balance of the first filter element component and the second filter element component; and closing the waste water discharge branch.

In another alternative embodiment, a first pure water reflux valve assembly 7 and a second pure water reflux valve assembly 8 are arranged on the first pure water reflux branch, the first pure water reflux valve assembly 7 is positioned between the first pure water reflux intersection point A and the third pure water reflux intersection point C, and the second pure water reflux valve assembly 8 is positioned between the second pure water reflux intersection point B and the third pure water reflux intersection point C; 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 9; a waste water valve assembly 17 is provided on the waste water discharge branch.

In yet another alternative embodiment, the water purification system further comprises:

wherein, water quality testing device includes:

a first water quality detection device 4 arranged at the second 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 backflow branch and the waste water discharge branch share part of the branch, the waste water backflow branch and the branch shared by the waste water discharge branch are 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 backflow branch and the waste water discharge branch respectively.

Optionally, a fourth water quality detection device 13 is arranged at the first wastewater outlet, and the fourth water quality detection device 13 is used for detecting the water quality condition of the first wastewater outlet.

Optionally, a fifth water quality detecting device 16 is disposed on the first pure water return branch, the fifth water quality detecting device 16 is located between the first pure water outlet and the first pure water return intersection point a, and the fifth water quality detecting device 16 is used for detecting the water quality condition of the first pure water outlet.

Optionally, a sixth water quality detecting device 14 is disposed on the second pure water return branch, the sixth water quality detecting device 14 is located between the second pure water outlet and the third pure water return intersection C, and the sixth water quality detecting device 14 is used for detecting the water quality condition of the second pure water outlet.

Optionally, a seventh water quality detection device 15 is disposed on the raw water branch, the seventh water quality detection device 15 is located between the second pure water backflow intersection B and the water inlet of the first filter element, and the seventh water quality detection device 15 is used for detecting the water quality condition of the water inlet of the first filter element.

Example IV

Referring to fig. 5, fig. 5 is a schematic structural diagram of another intelligent water purifying control device according to an embodiment of the present invention. The device described in fig. 5 may be a stand-alone device, or may be integrated into an intelligent water purifying apparatus, which is not limited by the embodiment of the present invention. As shown in fig. 5, the intelligent water purification control apparatus 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 intelligent water purification control method 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 intelligent water purification control method 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 an intelligent water purifying control method and an intelligent water purifying system, which are only disclosed as preferred embodiments of the invention, and are only used 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

1. The intelligent water purification control method is applied to a water purification system, the water purification system comprises a raw water branch, a supercharging device, a water production branch, a wastewater discharge branch and a pure water discharge branch, 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 production branch, the intelligent water purification control method is characterized in that the raw water branch is further provided with a front device, the water production branch comprises a first filter element group and a second filter element group, the first filter element group comprises a first filter element water inlet, a first filter element assembly, a first wastewater outlet and a first pure water outlet, the second filter element group comprises a second filter element water inlet, a second filter element assembly, a second wastewater outlet and a second pure water outlet, the first wastewater outlet is connected with the second filter element water inlet, the first pure water outlet and the second pure water outlet are all connected with the pure water discharge branch, the first pure water outlet is further connected with a first pure water backflow branch, the second pure water backflow branch is further connected with the second pure water backflow branch, the second pure water outlet is further connected with the wastewater discharge branch, and the wastewater discharge method comprises the wastewater discharge branch.

2. The intelligent water purification control method according to claim 1, wherein the second waste water outlet is further connected with 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 by the second waste water outlet to the supercharging device and then inputting the waste water into the water production branch so as to maintain water quality balance of the first filter element assembly and the second filter element assembly; and closing the waste water discharge branch.

3. The intelligent water purification control method according to claim 2, wherein when the first stage water production is performed, the method further comprises:

4. The intelligent water purification control method according to claim 3, further comprising:

5. The intelligent water purification control method according to claim 4, further comprising:

6. The intelligent water purification control method according to claim 4 or 5, wherein the determining whether the water producing branch meets a flushing condition comprises:

7. An intelligent water purification system, the water purification system includes raw water branch road, produces water branch road, waste water emission branch road and pure water emission branch road, 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 water upstream of branch road, its characterized in that, the water purification system still includes:

8. The intelligent water purification system of claim 7, further comprising:

Wherein, when the first-stage flushing is performed, the waste water reflux branch is used for refluxing the waste water discharged by the second 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 first filter element component and the second filter element component; the waste water discharge branch is closed.

9. The intelligent water purification system according to claim 8, wherein a first pure water return valve assembly and a second pure water return valve assembly are provided on the first pure water return branch, the first pure water return valve assembly being located between the first pure water return intersection and the third pure water return intersection, the second pure water return valve assembly being located between the second pure water return intersection and the third pure water return intersection; 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 intelligent water purification system of claim 8 or 9, further comprising:

Wherein, water quality testing device includes:

11. The intelligent water purification system according to claim 10, wherein when the waste water return branch and the waste water discharge branch share a part of the branch, the waste water return branch and the branch shared by the waste water discharge branch are provided with waste water proportioning means for adjusting the water volume proportions of the waste water discharged from the waste water outlet flowing into the waste water return branch and the waste water discharge branch, respectively.

12. The intelligent water purification system according to claim 11, wherein a fourth water quality detection device is provided at the first wastewater outlet, and the fourth water quality detection device is configured to detect a water quality condition of the first wastewater outlet.

13. The intelligent water purification system according to claim 12, wherein a fifth water quality detection device is provided on the first pure water return branch, the fifth water quality detection device being located between the first pure water outlet and the first pure water return intersection, the fifth water quality detection device being configured to detect a water quality condition of the first pure water outlet.

14. The intelligent water purification system according to claim 13, wherein a sixth water quality detection device is provided on the second pure water return branch, the sixth water quality detection device being located between the second pure water outlet and the third pure water return cross point, the sixth water quality detection device being configured to detect a water quality condition of the second pure water outlet.

15. The intelligent water purification system according to claim 14, wherein a seventh water quality detection device is disposed on the raw water branch, the seventh water quality detection device being located between the second pure water backflow intersection and the first filter element water inlet, the seventh water quality detection device being configured to detect a water quality condition of the first filter element water inlet.