CN109592747A - The cleaning method and water purification machine of the reverse osmosis membrane filter element of water purification machine - Google Patents
The cleaning method and water purification machine of the reverse osmosis membrane filter element of water purification machine Download PDFInfo
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- CN109592747A CN109592747A CN201910093037.6A CN201910093037A CN109592747A CN 109592747 A CN109592747 A CN 109592747A CN 201910093037 A CN201910093037 A CN 201910093037A CN 109592747 A CN109592747 A CN 109592747A
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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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application discloses the cleaning method and water purification machine of a kind of reverse osmosis membrane filter element of water purification machine.This method comprises: obtaining the total dissolved solid value of water in the wastewater effluent pipeline；Determine the total dissolved solid value set interval in the wastewater effluent pipeline where the total dissolved solid value of water；According to the total dissolved solid value set interval, the corresponding cleaning operation condition of the total dissolved solid value set interval is determined；And cleaning operation is executed according to the cleaning operation condition, wherein the cleaning operation condition includes: to control the waste water solenoid valve according to default duty ratio to open and close preset times.Present application addresses the reverse osmosis membrane filter elements of water purification machine due to that can only cannot determine cleaning condition according to water purification machine current state based on caused by fixed waste water solenoid valve on-off duty ratio cleaning, water effect is low in cleaning process, the fine particle being difficult to clean off when cleaning in reverse osmosis membrane duct, so that the technical problem that reverse osmosis membrane service life is low.
Description
Technical field
This application involves purifier fields, in particular to a kind of cleaning side of the reverse osmosis membrane filter element of water purification machine
Method and a kind of water purification machine.
Background technique
Water purification machine is a kind of purifier that purification of water quality processing is carried out using multi-stage filter, is handled mostly using not addition
Learn the physical methods such as the filtering of substance, absorption, reverse osmosis.Reverse osmosis membrane filter element is the core component of water purification machine, and utilization is reverse osmosis
Film filters out most of impurity, work principle of filter are as follows: under pressure, hydrone can be by reverse osmosis membrane, and raw water
In the impurity such as inorganic salts, heavy metal ion, organic matter, colloid, bacterium, virus can not penetrate reverse osmosis membrane, to make one
Water is divided to come out through reverse osmosis membrane separation, the water not penetrated forms condensed water because of solute increase.
Reverse osmosis deionized water purification machine is needed to be serviced in short-term deactivate, and inappropriate processing will lead to reverse osmosis membrane
Function reduction and it cannot restore.Water purification machine is predominantly to fix waste water solenoid valve on-off duty ratio to reverse osmosis in the prior art
Film is cleaned, and cannot determine cleaning condition in cleaning process according to water purification machine current state, and water effect is low in cleaning process, and clear
The fine particle being difficult to clean off in reverse osmosis membrane duct when washing causes the reverse osmosis membrane service life low.
For the above problem in the prior art, currently no effective solution has been proposed.
Summary of the invention
The main purpose of the application is to provide a kind of frequency conversion cleaning method of the reverse osmosis membrane filter element of water purification machine, to solve
The reverse osmosis membrane filter element of water purification machine in the prior art is made by that can only be based on fixed waste water solenoid valve on-off duty ratio cleaning
At cleaning condition cannot be determined according to water purification machine current state, water effect is low in cleaning process, and when cleaning is difficult to clean off reverse osmosis
Fine particle in fenestra road, so that the technical problem that reverse osmosis membrane service life is low.
To achieve the goals above, according to the one aspect of the application, a kind of reverse osmosis membrane filter element of water purification machine is provided
Cleaning method, the water purification machine includes: reverse osmosis membrane filter element and the inlet pipeline being connected with the reverse osmosis membrane filter element, pure water
Outlet pipeline and wastewater effluent pipeline are provided with inlet water solenoid valve and booster water pump, the pure water water outlet on the inlet pipeline
Non-return valve is provided on pipeline, the waste water outlet pipe road is provided with waste water solenoid valve and TDS detector, wherein the side
Method comprises determining that the total dissolved solid value set interval where the total dissolved solid value of water in wastewater effluent pipeline；According to
The total dissolved solid value set interval determines the corresponding cleaning operation item of the total dissolved solid value set interval
Part；And cleaning operation is executed according to the cleaning operation condition, wherein the cleaning operation condition includes: to account for according to default
It is empty to open and close preset times than controlling the waste water solenoid valve.
It is further, described that execute cleaning operation according to the cleaning operation condition include: the control inlet water solenoid valve
It is opened with booster water pump；And the waste water solenoid valve is controlled according to the cleaning operation condition and is opened and closed.
Further, the total dissolved solid in the determining wastewater effluent pipeline where the total dissolved solid value of water
It is worth before set interval, the method also includes: judge whether the water purification machine meets the cleaning touching of the reverse osmosis membrane filter element
Clockwork spring part；And when judging that the water purification machine meets the cleaning trigger condition of the reverse osmosis membrane filter element, then described in execution
The step of determining the total dissolved solid value set interval where the total dissolved solid value of water in wastewater effluent pipeline.
Further, the cleaning trigger condition for judging the water purification machine and whether meeting the reverse osmosis membrane filter element, packet
It includes: obtaining the total dissolved solid value of water in the wastewater effluent pipeline；And judge the molten of water in the wastewater effluent pipeline
Whether solution property total solid value is more than or equal to the first default total dissolved solid value, wherein when judging the wastewater effluent pipeline
When the total dissolved solid value of middle water is more than or equal to the first default total dissolved solid value, the water purification machine meets described reverse osmosis
The cleaning trigger condition of membrane filter.
Further, it is described judge the water purification machine whether meet the reverse osmosis membrane filter element cleaning trigger condition it
Afterwards, the method also includes: when judging that the water purification machine is unsatisfactory for the cleaning trigger condition of the reverse osmosis membrane filter element, then
Terminate the cleaning of reverse osmosis membrane filter element.
Further, before the execution cleaning operation according to the cleaning operation condition, the method also includes: inspection
Survey the cleaning the service condition whether water purification machine meets the reverse osmosis membrane filter element；If detecting that the water purification machine is unsatisfactory for
The cleaning service condition of the reverse osmosis membrane filter element then controls the pure water mechanism water；Judge whether the water purification machine meets
One preset condition；And if it is judged that the water purification machine meets first preset condition, then execute described according to described clear
Wash the step of operating condition executes cleaning operation, wherein first preset condition includes one of the following conditions or a variety of:
Hydraulic pressure is more than or equal to first in advance before the water duration processed of the water purification machine reaches the pre- film for being equipped with water duration and reverse osmosis membrane filter element
If hydraulic pressure threshold value.
Further, it is determined according to the total dissolved solid value set interval and described pre- is equipped with water duration and described first
Default hydraulic pressure threshold value.
Further, whether the detection water purification machine meets the cleaning service condition packet of the reverse osmosis membrane filter element
It includes: detecting hydraulic pressure before the film of the reverse osmosis membrane filter element；And whether hydraulic pressure is lower than the second default hydraulic pressure threshold before judging the film
Value, wherein when hydraulic pressure is lower than the second default hydraulic pressure threshold value before judging the film, the water purification machine is unsatisfactory for the reverse osmosis membrane
The cleaning service condition of filter core.
To achieve the goals above, according to the one aspect of the application, a kind of water purification machine is provided, which includes:
Control device, reverse osmosis membrane filter element and the inlet pipeline being connected with the reverse osmosis membrane filter element, pure water outlet pipeline and waste water go out
Water lines are provided with inlet water solenoid valve and booster water pump on the inlet pipeline, are provided with check on the pure water outlet pipeline
Valve, the waste water outlet pipe road are provided with waste water solenoid valve and TDS detector, wherein the control device and the water inlet
Solenoid valve, booster water pump, waste water solenoid valve connect with TDS detector, for executing the reverse osmosis membrane filter element of above-mentioned water purification machine
Cleaning method.
In the embodiment of the present application, using the method according to waste water quality dynamic regulation cleaning operation condition, pass through determination
Total dissolved solid value set interval in wastewater effluent pipeline where the total dissolved solid value of water, to further determine that out
With cleaning operation condition corresponding to the total dissolved solid value set interval, that is to say, that for the different waste water detected
Total dissolved solid value cleans reverse osmosis membrane filter element using different cleaning operation condition control water purification machines, on the one hand
It can be improved water effect, on the other hand can recycle " water hammer " effect generated by on-off waste water solenoid valve and remove reverse osmosis membrane
Fine particle in duct, the more effective service life for extending reverse osmosis membrane.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present application, so that the application's is other
Feature, objects and advantages become more apparent upon.The illustrative examples attached drawing and its explanation of the application is for explaining the application, not
Constitute the improper restriction to the application.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of water purification machine in the embodiment of the present application；
Fig. 2 is a kind of process signal of the cleaning method of the reverse osmosis membrane filter element for water purification machine that one embodiment of the application provides
Figure；
Fig. 3 is that a kind of process of the cleaning method of the reverse osmosis membrane filter element for water purification machine that another embodiment of the application provides is shown
It is intended to；
Fig. 4 is the workflow according to the cleaning method of the reverse osmosis membrane filter element of water purification machine in one specific embodiment of the application
Figure.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described embodiment is only
The embodiment of the application a part, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
Member's every other embodiment obtained without making creative work, all should belong to the model of the application protection
It encloses.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so as to embodiments herein described herein.In addition, term " includes " and " tool
Have " and their any deformation, it is intended that cover it is non-exclusive include, for example, containing a series of steps or units
Process, method, system, product or equipment those of are not necessarily limited to be clearly listed step or unit, but may include without clear
Other step or units listing to Chu or intrinsic for these process, methods, product or equipment.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Figure 1, the embodiment of the present application provides a kind of water purification machine, the water purification machine include: reverse osmosis membrane filter element 1 and with it is anti-
Membrane filter connected inlet pipeline 100, pure water outlet pipeline 200 and wastewater effluent pipeline 300 are permeated, is set on inlet pipeline 100
It is equipped with inlet water solenoid valve 2 and booster water pump 3, non-return valve 4 is provided on pure water outlet pipeline 200, is set on wastewater effluent pipeline 300
It is equipped with waste water solenoid valve 5 and TDS detector 6, optionally, pressure sensor 7 is provided on inlet pipeline 100.Wherein, it intakes
Solenoid valve 2 is used to control the on-off of inlet pipeline 100, and booster water pump 3 is for raw water to be pumped into reverse osmosis membrane filter element 1, check
Valve 4 is used to control the one-way flow of pure water in pure water outlet pipeline 200, and waste water solenoid valve 5 is for controlling wastewater effluent pipeline
On-off, TDS detector 6 are used to detect the total dissolved solid value of water in wastewater effluent pipeline, and the setting of pressure sensor 7 is being pressurized
Between water pump 3 and reverse osmosis membrane filter element 1, pressure before the film for detecting reverse osmosis membrane filter element.
The embodiment of the present application provides a kind of cleaning of the reverse osmosis membrane filter element of water purification machine based on above-mentioned water purification machine structure
Method is specifically described this method below in conjunction with attached drawing 2, attached drawing 3.
Fig. 2 is a kind of process signal of the cleaning method of the reverse osmosis membrane filter element for water purification machine that one embodiment of the application provides
Figure, as shown in Fig. 2, this method includes the following steps, namely S1 to step S3:
Step S1 determines the total dissolved solid value setting area where the total dissolved solid value of water in wastewater effluent pipeline
Between.
In this method, the interval range end value of total dissolved solid value, such as TDS delimited in advance0、
TDS1······TDSn, it is formed with multiple n total dissolved solid value set interval [TDS0, TDS1]、[TDSn-1,
TDSn].Preferably, TDS0=200, TDS1=400, TDSn=1000.
The total dissolved solid delimited according to the total dissolved solid value of water in current wastewater effluent pipeline and in advance
The interval range end value of value determines the total dissolved solid value in the wastewater effluent pipeline where the total dissolved solid value of water
Set interval.
Step S2 determines that total dissolved solid value set interval is corresponding according to total dissolved solid value set interval
Cleaning operation condition.
Corresponding cleaning operation condition is determined according to the fine or not degree of waste water quality, that is, is directed to different waste water outlet pipes
The total dissolved solid value of Lu Zhongshui matches different cleaning operation conditions for it.Wherein, cleaning operation condition include: according to
Default duty ratio control waste water solenoid valve opens and closes preset times.
Duty ratio refers to that in a pulse cycle, conduction time is relative to ratio shared by total time.In this step,
It is opened and closed according to default duty ratio control waste water solenoid valve, i.e., control waste water solenoid valve has a default opening time and pre-
If close duration, as duty ratio be 1:5 when, control waste water solenoid valve open 1 unit time, close 4 unit times, according to
Default duty ratio 1:5 control waste water solenoid valve opens and closes preset times 5 times, i.e. control waste water solenoid valve opens 1 unit
Duration closes 4 unit times and is again turned on 1 unit time, close 4 unit times, is repeated 5 times.
Step S3 executes cleaning operation according to cleaning operation condition.
Executing cleaning operation according to cleaning operation condition includes: that control inlet water solenoid valve and booster water pump are opened；And it presses
It is opened and closed according to cleaning operation condition control waste water solenoid valve.
Fig. 3 is that a kind of process of the cleaning method of the reverse osmosis membrane filter element for water purification machine that another embodiment of the application provides is shown
It is intended to, as shown in Fig. 2, this method comprises the following steps that
Following step S0 is first carried out after starting the cleaning procedure of water purification machine reverse osmosis membrane filter element:
Step S0, judges whether water purification machine meets the cleaning trigger condition of reverse osmosis membrane filter element.Specifically include following two step
It is rapid:
Obtain the total dissolved solid value of water in wastewater effluent pipeline；Judge that the dissolubility of water in wastewater effluent pipeline is always solid
Whether body value is more than or equal to the first default total dissolved solid value.
Total dissolved solid (TDS) refers to the total amount of dissolved constituent in water, including be dissolved in the water various ions, molecule,
The total amount of compound, but do not include suspended matter and dissolved gas.TDS value is higher, indicates that the dissolved matter contained in water is more, from one
Aspect represents the fine or not degree of water quality.When judging that it is default that the total dissolved solid value in wastewater effluent pipeline is more than or equal to first
When total dissolved solid value, water purification machine meets the cleaning trigger condition of reverse osmosis membrane filter element.
When judging that water purification machine meets the cleaning trigger condition of reverse osmosis membrane filter element, then above-mentioned step S1 is executed, really
Determine the total dissolved solid value set interval where the total dissolved solid value of water in wastewater effluent pipeline.
When judging that water purification machine is unsatisfactory for the cleaning trigger condition of reverse osmosis membrane filter element, then terminate reverse osmosis membrane filter element
Cleaning.
It should include the steps that judging whether water purification machine enters cleaning procedure before water purification machine enters cleaning procedure, clean
Trigger condition is the condition for triggering water purification machine and entering cleaning procedure.When judging that water purification machine is unsatisfactory for the cleaning of reverse osmosis membrane filter element
When trigger condition, water purification machine does not enter cleaning procedure；When judging that water purification machine meets the cleaning trigger condition of reverse osmosis membrane filter element
When, then water purification machine carries out cleaning procedure.Preferably, the first default total dissolved solid value chooses above-mentioned total dissolved solid value
The minimum end value in section, i.e. TDS0.That is, when detecting that the total dissolved solid value of water in wastewater effluent pipeline is greater than
TDS0When, trigger the cleaning procedure of reverse osmosis membrane filter element.
Other than the cleaning trigger condition of above-mentioned reverse osmosis membrane filter element, can also by be arranged water purification machine cleaning switch,
Artificial control cleaning switch is opened to trigger cleaning procedure, which can open at any time according to user demand or timing is opened
It opens.
After executing above-mentioned step S1, executes above-mentioned step S2: determining that the dissolubility of water in wastewater effluent pipeline is total
Total dissolved solid value set interval where solid values.
It should include the steps that judging whether water purification machine can run cleaning procedure before water purification machine operation cleaning, namely
Whether step S30, detection water purification machine meet the cleaning service condition of reverse osmosis membrane filter element.
When water purification machine meets the cleaning service condition of reverse osmosis membrane, above-mentioned step S3 can be executed: being grasped according to cleaning
Make condition and executes cleaning operation.
Specifically, the cleaning service condition whether detection water purification machine meets reverse osmosis membrane filter element includes:
Hydraulic pressure before the film of detection reverse osmosis membrane filter element；And
Whether hydraulic pressure is lower than the second default hydraulic pressure threshold value before judging film, wherein hydraulic pressure is default lower than second before judging film
When hydraulic pressure threshold value, water purification machine is unsatisfactory for the cleaning service condition of reverse osmosis membrane filter element.Preferably, it is set according to total dissolved solid value
Determine section and determines the second default hydraulic pressure threshold value.
When detecting that water purification machine is unsatisfactory for the cleaning service condition of reverse osmosis membrane filter element, i.e. water purification machine current state can not
When implementing the operation of cleaning reverse osmosis membrane filter element, need to first carry out step S31: control pure water mechanism water controls pure water mechanism water
Concrete operations are as follows: control inlet water solenoid valve and booster water pump open, control waste water solenoid valve close.
Step S32 is needed to be implemented during water processed: whether detection water purification machine current state meets the first preset condition.Its
In, stop water processed when meeting the first preset condition, into above-mentioned step S3: executing cleaning operation according to cleaning operation condition
The step of；Then continue water processed when being unsatisfactory for the first preset condition, meets the first preset condition when until detecting again.
First preset condition includes one of the following conditions or a variety of: the water duration processed of water purification machine reaches pre- when being equipped with water
Hydraulic pressure is more than or equal to the first default hydraulic pressure threshold value before long and reverse osmosis membrane filter element film.
Preferably, it is determined according to total dissolved solid value set interval and is equipped with water duration and the first default hydraulic pressure threshold value in advance.
The first preset condition is determined according to the quality of waste water quality, is come clearly for example, generally requiring more water when waste water quality is poor
It washes, water duration processed is then mutually in requisition for longer, and hydraulic pressure is mutually in requisition for higher before film.Pass through water in the wastewater effluent pipeline determined
Total dissolved solid value set interval where total dissolved solid value is accordingly determined pre- to be equipped with water duration and the first default water
Threshold value is pressed, water effect can be improved, flexibility is stronger.Preferably, the first default hydraulic pressure threshold value is equal with the second default hydraulic pressure threshold value.
For example, the first default hydraulic pressure threshold value and the second default hydraulic pressure threshold value take when total dissolved solid value set interval is [0,200]
Value is 0.1, and at [200,400], value is 0.2, and at [1000,~], value is 0.25.
In this method, total dissolved solid value set interval, default duty ratio, preset times, first are preset in advance
If the mapping relations between condition,.For example, part mapping relationship is shown in Table 1.
1 parameter preset mapping table of table
In the embodiment of the present application, using the method according to waste water quality dynamic regulation cleaning operation condition, pass through acquisition
In wastewater effluent pipeline the total dissolved solid value of water and determine wastewater effluent pipeline in water total dissolved solid value where
Total dissolved solid value set interval, to further determine that out and cleaning corresponding to the total dissolved solid value set interval
Operating condition, that is to say, that for the different waste water total dissolved solid values detected, using different cleaning operation conditions
Control water purification machine cleans reverse osmosis membrane filter element, on the one hand can be improved water effect, on the other hand, in control waste water solenoid valve
During opening and closing repeatedly, the water hammer effect that the waste water side of reverse osmosis membrane filter element is generated by pressure difference can remove reverse osmosis
Fine particle in permeable membrane duct, the more effective service life for extending reverse osmosis membrane filter element.
As shown in figure 3, after step S3 executes cleaning operation according to cleaning operation condition, this method further include:
Step S0 is executed again, judges whether water purification machine meets the cleaning trigger condition of reverse osmosis membrane filter element.
When judging that water purification machine is unsatisfactory for the cleaning trigger condition of reverse osmosis membrane filter element, terminate the clear of reverse osmosis membrane filter element
It washes.
When judging that water purification machine meets the cleaning trigger condition of reverse osmosis membrane filter element, then continues to execute S1 and determine that waste water goes out
The step of total dissolved solid value set interval in water lines where the total dissolved solid value of water.
Fig. 4 is the workflow according to the cleaning method of the reverse osmosis membrane filter element of water purification machine in one specific embodiment of the application
Figure.
When water purification machine enters cleaning procedure, the total dissolved solid value TDS of water first in detection wastewater effluent pipelineWaste water,
TDS is worked as in judgementWaste waterMore than or equal to TDS0When, into subsequent cleaning procedure.Work as TDSWaste waterLess than TDS0When, terminate cleaning procedure.
By TDSn(the maximum end value of total dissolved solid value set interval) rises, and successively judges TDSWaste waterWhether TDS is greater thann,
If it is, i=n is determined, if it is not, then judging TDSWaste waterWhether TDS is greater thann-1, successively judged in this way, until really
Make i value, that is to say, that TDS is determined by this stepWaste waterThe total dissolved solid value set interval at place.
It determines after obtaining i value, whether hydraulic pressure is greater than the second default hydraulic pressure threshold value before judging film, the second default hydraulic pressure threshold value
Take TDSWaste waterThe corresponding hydraulic pressure threshold value P of total dissolved solid value set interval at placei。
If hydraulic pressure is greater than P before filmi, then enter cleaning procedure, concrete operations are as follows: control inlet water solenoid valve and booster water pump
It opens, according to default duty ratio RiIt controls waste water solenoid valve and acts CiSecondary, which takes TDSWaste waterThe dissolubility at place is total
The corresponding duty cycle threshold R of solid values set intervali, which takes TDSWaste waterThe total dissolved solid value at place is set
The corresponding preset times threshold value C in sectioni。
If hydraulic pressure is less than P before filmi, then enter water program processed, concrete operations are as follows: control inlet water solenoid valve and booster water pump
It opens, control waste water solenoid valve is closed.Water duration processed is detected in water program processed whether reach pre- be equipped with water duration or detection
Whether hydraulic pressure is more than or equal to the first default hydraulic pressure threshold value before film, wherein being equipped with water duration takes TDS in advanceWaste waterThe dissolubility at place is always solid
Body value set interval is corresponding pre- to be equipped with water duration Ti, the first default hydraulic pressure threshold value is equal with the second default hydraulic pressure threshold value, takes
TDSWaste waterThe corresponding hydraulic pressure threshold value P of total dissolved solid value set interval at placei.If above-mentioned testing result is "Yes",
Control water purification machine enters cleaning procedure, and concrete operations are same as above；If above-mentioned testing result is "No", continue water processed until detection
To water duration processed reach it is pre- be equipped with water duration or detection film before hydraulic pressure be more than or equal to the first default hydraulic pressure threshold value.
After the operation for completing cleaning procedure, the total dissolved solid value TDS of water in wastewater effluent pipeline is detected againWaste water,
And judge to work as TDSWaste waterMore than or equal to TDS0When, it is again introduced into cleaning procedure.Work as TDSWaste waterLess than TDS0When, terminate cleaning procedure.
As the preferred embodiment of the application, the automatic clear of water purification machine reverse osmosis membrane filter element is realized by the following method
Wash: setting control device, the control device and control device and inlet water solenoid valve, booster water pump, waste water solenoid valve, TDS are detected
Device, pressure sensor connection, the cleaning method of the reverse osmosis membrane filter element for executing above-mentioned water purification machine.
Obviously, those skilled in the art should be understood that above-mentioned each step of the present invention can use general computing device
It realizes, they can be concentrated on a single computing device, or be distributed over a network of multiple computing devices, can
Selection of land, they can be realized with the program code that computing device can perform, it is thus possible to be stored in storage device
It is performed by computing device, perhaps they are fabricated to each integrated circuit modules or by multiple modules in them
Or step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and software knots
It closes.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (9)
1. a kind of cleaning method of the reverse osmosis membrane filter element of water purification machine, which is characterized in that the water purification machine includes: reverse osmosis membrane filtration
Core and the inlet pipeline being connected with the reverse osmosis membrane filter element, pure water outlet pipeline and wastewater effluent pipeline, the inlet pipeline
On be provided with inlet water solenoid valve and booster water pump, non-return valve, the wastewater effluent pipeline are provided on the pure water outlet pipeline
On be provided with waste water solenoid valve and TDS detector, wherein the described method includes:
Determine the total dissolved solid value set interval where the total dissolved solid value of water in wastewater effluent pipeline；
According to the total dissolved solid value set interval, the corresponding cleaning of the total dissolved solid value set interval is determined
Operating condition；And
Cleaning operation is executed according to the cleaning operation condition, wherein the cleaning operation condition includes: according to default duty ratio
It controls the waste water solenoid valve and opens and closes preset times.
2. the cleaning method of the reverse osmosis membrane filter element of water purification machine according to claim 1, which is characterized in that described according to
Cleaning operation condition executes cleaning operation
It controls the inlet water solenoid valve and booster water pump is opened；And
The waste water solenoid valve is controlled according to the cleaning operation condition to open and close.
3. the cleaning method of the reverse osmosis membrane filter element of water purification machine according to claim 1, which is characterized in that useless in the determination
Before total dissolved solid value set interval in water outlet pipeline where the total dissolved solid value of water, the method is also wrapped
It includes:
Judge whether the water purification machine meets the cleaning trigger condition of the reverse osmosis membrane filter element；And
When judging that the water purification machine meets the cleaning trigger condition of the reverse osmosis membrane filter element, then the determining waste water is executed
The step of total dissolved solid value set interval in outlet pipeline where the total dissolved solid value of water.
4. the cleaning method of the reverse osmosis membrane filter element of water purification machine according to claim 3, which is characterized in that described in the judgement
Whether water purification machine meets the cleaning trigger condition of the reverse osmosis membrane filter element, comprising:
Obtain the total dissolved solid value of water in the wastewater effluent pipeline；And
Judge whether the total dissolved solid value of water in the wastewater effluent pipeline is more than or equal to the first default total dissolved solid
Value, wherein when the total dissolved solid value for judging water in the wastewater effluent pipeline is total more than or equal to the first default dissolubility
When solid values, the water purification machine meets the cleaning trigger condition of the reverse osmosis membrane filter element.
5. the cleaning method of the reverse osmosis membrane filter element of water purification machine according to claim 3, which is characterized in that in the judgement institute
It states after whether water purification machine meet the cleaning trigger condition of the reverse osmosis membrane filter element, the method also includes:
When judging that the water purification machine is unsatisfactory for the cleaning trigger condition of the reverse osmosis membrane filter element, then terminate reverse osmosis membrane filtration
The cleaning of core.
6. the cleaning method of the reverse osmosis membrane filter element of water purification machine according to claim 1, which is characterized in that described according to institute
Before stating cleaning operation condition execution cleaning operation, the method also includes:
Detect the cleaning the service condition whether water purification machine meets the reverse osmosis membrane filter element；
If detecting that the water purification machine is unsatisfactory for the cleaning service condition of the reverse osmosis membrane filter element, the water purification machine is controlled
Water processed；
Judge whether the water purification machine meets the first preset condition；And
If it is judged that the water purification machine meets first preset condition, then executes and described held according to the cleaning operation condition
The step of row cleaning operation, wherein first preset condition includes one of the following conditions or a variety of: the water purification machine
Hydraulic pressure is more than or equal to the first default hydraulic pressure threshold value before water duration processed reaches the pre- film for being equipped with water duration and reverse osmosis membrane filter element.
7. the cleaning method of the reverse osmosis membrane filter element of water purification machine according to claim 6, which is characterized in that according to the dissolution
Property total solid value set interval, which determines, described pre- is equipped with water duration and the first default hydraulic pressure threshold value.
8. the cleaning method of the reverse osmosis membrane filter element of water purification machine according to claim 6, which is characterized in that described in the detection
The cleaning service condition whether water purification machine meets the reverse osmosis membrane filter element includes:
Detect hydraulic pressure before the film of the reverse osmosis membrane filter element；And
Whether hydraulic pressure is lower than the second default hydraulic pressure threshold value before judging the film, wherein hydraulic pressure is lower than second before judging the film
When default hydraulic pressure threshold value, the water purification machine is unsatisfactory for the cleaning service condition of the reverse osmosis membrane filter element.
9. a kind of water purification machine characterized by comprising control device, reverse osmosis membrane filter element and with the reverse osmosis membrane filter element phase
Inlet pipeline, pure water outlet pipeline and wastewater effluent pipeline even is provided with inlet water solenoid valve and pressurization on the inlet pipeline
Water pump, non-return valve is provided on the pure water outlet pipeline, and the waste water outlet pipe road is provided with waste water solenoid valve and TDS inspection
Survey device, wherein the control device is connect with the inlet water solenoid valve, booster water pump, waste water solenoid valve and TDS detector, is used
The cleaning method of the reverse osmosis membrane filter element of any one of 1 to 9 water purification machine is required in perform claim.
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| CN201910093037.6A CN109592747A (en) | 2019-01-30 | 2019-01-30 | The cleaning method and water purification machine of the reverse osmosis membrane filter element of water purification machine |
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| US10882760B1 (en) * | 2020-05-13 | 2021-01-05 | Benjamin John Koppenhoefer | System and method for reducing water pump cycling and TDS creep when producing purified water |
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| GB2529179A (en) * | 2014-08-12 | 2016-02-17 | Membrane Recovery Ltd | Forward osmotic and water hammer method of membrane cleaning |
| CN105906081A (en) * | 2016-05-09 | 2016-08-31 | 佛山市云米电器科技有限公司 | Reverse osmosis water purifying machine and flushing method of reverse osmosis filter core of reverse osmosis water purifying machine |
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Application publication date: 20190409 |