CN110467279A

CN110467279A - Water purification system

Info

Publication number: CN110467279A
Application number: CN201810441666.9A
Authority: CN
Inventors: 柯岩; 赵汉旭; 蔡雪刚
Original assignee: Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Priority date: 2018-05-09
Filing date: 2018-05-09
Publication date: 2019-11-19
Also published as: WO2019213906A1

Abstract

The present invention discloses a kind of water purification system comprising: membrane filter has the raw water mouth being connected to raw water tubes, the pure water mouth being connected to pure water pipe and the waste water mouth being connected to waste pipe；Inlet valve is installed on raw water tubes；Booster pump is installed on the raw water tubes between inlet valve and membrane filter；Intake switch is installed in pure water pipe；Pure water return pipe, water inlet end with pure water pipe be connected to, water outlet is connected to raw water tubes；Pure water return valve is installed on pure water return pipe；Water storage device comprising mutually independent the first water storage cavity being connected to pure water and the second water storage cavity being connected to raw water；And waste water recycling pipe, the water inlet end of return of waste water pipe are connected to waste pipe, the other end is connect with raw water tubes, and waste water recycling pipeline is for will carry out reuse in the return of waste water of membrane filter to raw water tubes or water storage device.So set, advantageously reduce water purification system be switched on every time the first cup pure water produced water quality and adequately and reasonably using waste water.

Description

Water purification system

Technical field

The present invention relates to technical field of water purification, in particular to a kind of water purification system.

Background technique

Drinking Water Problem is the problem of common people pay special attention to, and having many substances for being unfavorable for health in water has been thing out of question Real, this is also the hot root of the main reason for common people's healthy water consciousness is strengthened and purifier market.

It relies primarily on membrane filter in existing purifier to be filtered raw water, however, when the purifier is in standby When state, raw water, waste water and pure water can be existed simultaneously in the membrane filter, wherein raw water and waste water are in the film of membrane filter Before, after pure water is in the film of membrane filter, and raw water and total dissolved solidss (TDS) value of waste water are intended to greatly higher than pure water TDS value, if the purifier is in standby for a long time, the ion that will lead in the raw water and waste water of membrane filter is diffused into In pure water, so that the TDS value of pure water increases, when being switched on Pure-water Making purifier next time, the first cup pure water produced TDS value can be relatively high, influence the experience of user.

The effective ways for reducing first cup water TDS at present mainly pass through pure water and are rinsed to RO film, by TDS high in RO film Waste water flushing go out.It will lead to a large amount of water resource using pure water rinsing to be consumed.The water being wherein consumed mainly includes two A part: the pure water for flushing；And the waste water being discharged when producing flushing pure water.

Summary of the invention

The main object of the present invention is to propose a kind of water purification system, which has a variety of cleaning models, and not Same cleaning model can be applied in combination, it is intended to which water purifier stops being rinsed membrane filter when water processed, by TDS high in membrane filter Concentrated water discharge, to membrane filter and wastewater valve are immersed in the water of low TDS, water purifier water when system processed again is greatly reduced The TDS of the first cup water taken, while extending the service life of membrane filter and wastewater valve.And the water purification system has waste water recycling Pipe, can carry out reuse for the effluent part flowed out from membrane filter waste water mouth as needed, be more than rushing for 60%-80% to save The water resource consumed when washing.

The waste water of recycling mainly includes two parts:

First part: water purifier normally water processed when, from waste water mouth be discharged waste water TDS it is very high, the usually 2-4 of raw water Times, it is unable to reuse, reuse will lead to the pure water TDS produced and increase by force, and lead to membrane filter life time decay.When to film After filter core carries out pure water rinsing, what is be full of in membrane filter is the pure water of low TDS, water purifier again water processed when, the water of these low TDS Concentrated water can be become, be discharged first from waste water mouth.Therefore water purifier again water processed when the TDS of this part concentrated water that is discharged first in fact Be it is also lower than raw water, can be with reuse.In actual recovered, before this effluent part can be passed straight back to pump, it is reused for water processed.

Second part: when just starting to carry out pure water rinsing to membrane filter, the concentrated water TDS being discharged from waste water mouth is very high , usually times over raw water.But with the lasting progress of flushing, the concentrated water TDS of waste water mouth discharge is gradually lower, This effluent part after TDS is lower is also recuperable.In actual recovered, before this effluent part can be passed straight back to pump, It is reused for water processed；Or this effluent part is recovered to the second water storage cavity of water storage device, it is filled next time to water storage to water purifier It sets when filling pure water in the first water storage cavity, this effluent part of recycling can be expressed into raw water tubes, be reused for water processed.

By the recycling to this two parts waste water, the waste water of recycling generally reaches entire flushing process water loss 60-80% reduces the waste of water resource.

To achieve the above object, the present invention proposes that a kind of water purification system, the water purification system include:

Membrane filter has the raw water mouth being connected to raw water tubes, the pure water mouth being connected to pure water pipe and is connected to waste pipe Waste water mouth；

Inlet valve is installed on the raw water tubes；

Supercharging device is installed on the raw water tubes between the inlet valve and the membrane filter；

Intake switch is installed in the pure water pipe；

Pure water return pipe, the pure water pipe between water inlet end and the membrane filter and the intake switch are connected to, water outlet End is connected to the raw water tubes between the inlet valve and the supercharging device, and is connected to the first tie point；

Pure water return valve is installed on the pure water return pipe；

Water storage device comprising shell and be movably installed in the intracorporal movable part of the shell, the movable part will be described Shell is every being set as mutually independent multiple chambers.By taking two chambers as an example, the movable part is mutually indepedent every being set as by the shell The first water storage cavity and the second water storage cavity, first water storage cavity is pure by the first pipeline and the pure water return valve influent side The connection of water return pipe, second water storage cavity are connected to by the second pipeline with water source, and the water source can be into the raw water Raw water in pipe；And

One end of waste water recycling pipeline, the return of waste water pipe is connected to the waste pipe, the other end and the raw water tubes It is connected to third tie point, the third tie point is on the raw water tubes between raw water inlet and the supercharging device；It is described Waste water recycling pipeline is used to the return of waste water of membrane filter carrying out reuse in raw water tubes or water storage device to before pumping；Wherein, if First part's waste water is only recycled, the third tie point is on the raw water tubes between raw water inlet and the supercharging device ；If first part and second part waste water are recycled in optimization simultaneously, the third tie point need to be located at raw water inlet On raw water tubes between the inlet valve.

Preferably, be provided with wastewater valve and the second inlet valve on the waste pipe, the wastewater valve be located at described second into Between water valve and the waste water mouth of the membrane filter；

The water inlet end of the waste water recycling pipeline is connected to the waste pipe between the wastewater valve and the second inlet valve.

Preferably, wastewater valve and triple valve, the water inlet of the triple valve and the membrane filtration are provided on the waste pipe The waste water mouth of core is connected to, and the first water outlet of the triple valve is connected to the wastewater valve, the second water outlet of the triple valve It is connected to the water inlet end of the waste water recycling pipeline.

Waste pipe between the water inlet end and the wastewater valve of the waste water recycling pipe and the waste water mouth of the membrane filter connects It is logical.

Preferably, the first flow-limiting valve and/or second one-way valve are provided on the waste water recycling pipeline；

The second one-way valve is from the waste water mouth of the membrane filter to third tie point one-way conduction.

Preferably, the water purification system further include:

One end of return of waste water pipe, the return of waste water pipe is connected to the waste pipe, and the other end and the raw water tubes connect It is connected to the second tie point, second tie point is located on the raw water tubes before the supercharging device；

Return of waste water valve, return of waste water valve are set on the return of waste water pipe；

Preferably, the water purification system further includes waste water proportional valve, and the waste water proportional valve is set to the return of waste water Guan Shang；

The waste water proportional valve and the return of waste water valve are arranged on the return of waste water pipe；

Be provided with wastewater valve on the waste pipe, the water inlet end of the return of waste water pipe be connected to the wastewater valve with it is described Between waste water mouth.

Preferably, the water purification system further includes controller, and the controller is filled with the inlet valve, the pressurization respectively Set, the intake switch, second inlet valve and the pure water return valve electrically connect, the controller receives described When the shutdown signal of intake switch, membrane filter is rinsed, the water purification system has a variety of cleaning models, and different Cleaning model can be applied in combination:

Mixed water rinse mode: when the controller receives the shutdown signal of the intake switch, trigger the inlet valve, The control circuit of the supercharging device and the pure water return valve is opened with controlling the inlet valve, controls the pressurization dress Set holding working condition, and control the pure water return valve and close so that the pure water that the membrane filter is produced pass through it is described pure Water return pipe and first pipeline enter in first water storage cavity；The controller receives first water storage cavity and is packed into When the signal of default pure water amount, the control circuit of the inlet valve, the supercharging device and the pure water return valve is triggered, with It controls the inlet valve to open, controls the supercharging device and keep working condition, while controlling the pure water return valve and opening, with So that the pure water that the membrane filter is produced is back in the raw water tubes, and to described after being mixed with the raw water in the raw water tubes Membrane filter is rinsed；

Water processed-pure water rinsing mode: the controller receives the signal that first water storage cavity is packed into default pure water amount When, the control circuit of the inlet valve, the supercharging device and the pure water return valve is triggered, is closed with controlling the inlet valve It closes, controls the supercharging device and keep working condition, and control the pure water return valve and open, while passing through second pipeline The water flowing into second water storage cavity, so that the pure water in pure water and first water storage cavity that the membrane filter is produced is together It is back in the membrane filter to be rinsed to the membrane filter；

Common pure water rinsing mode: the controller receives the signal that first water storage cavity is packed into default pure water amount When, trigger the control circuit of the inlet valve, the supercharging device and the pure water return valve, with control the inlet valve and Supercharging device is closed, while being controlled the pure water return valve and being opened, while passing through second pipeline to second water storage cavity Interior water flowing, so that the pure water in first water storage cavity is back in the membrane filter to be rinsed to the membrane filter.

Preferably, the water purification system further includes first pressure detection device or first flow detection device, and described first Pressure-detecting device or first flow detection device are installed on first pipeline；

The controller is also electrically connected with the first pressure detection device or first flow detection device, the control Device controls the inlet valve, described according to the first pressure detection device or the testing result of first flow detection device Supercharging device, second inlet valve and pure water return valve work.

Preferably, the water purification system further includes the current detection means for detecting supercharging device；

The controller and the current detection means are electrically connected, and the controller is according to the current detection means Testing result controls the inlet valve, the supercharging device, second inlet valve and pure water return valve work.

Preferably, the water purification system further includes second pressure detection device or second flow detection device, and described Perhaps second flow detection device is installed between the supercharging device and the membrane filter or installs two pressure-detecting devices On waste pipe between the membrane filter and second inlet valve；

The controller is also electrically connected with the second pressure detection device or second flow detection device, the control Device processed controls the inlet valve, institute according to the second pressure detection device or the testing result of second flow detection device State supercharging device, second inlet valve and pure water return valve work.

Preferably, the water purification system further includes time set, and the time set is for detecting the water purification system Standby time；

The controller is also electrically connected with the time set, and the controller is according to the detection knot of the time set Fruit controls the work of the inlet valve, the supercharging device, second inlet valve and the pure water return valve, to described Membrane filter is rinsed；The controller at regular intervals carries out membrane filter according to the timing result of the time set Once flushing.

Preferably, the water purification system further includes TDS sensing device, and the TDS sensing device is installed on the waste pipe On；The controller is also electrically connected with the TDS sensing device, and the controller is according to the testing result of the time set The work for controlling the inlet valve, the supercharging device, second inlet valve and the pure water return valve, to the film Filter core is rinsed.

Preferably, the water purification system further includes third pressure-detecting device, and the third pressure-detecting device is installed on In the pure water pipe；

Pure water pipe between the water inlet end and the membrane filter and the third pressure-detecting device of the pure water return pipe Connection；

The controller is also electrically connected with the third pressure-detecting device, and the controller receives the third pressure When the hydraulic pressure value of force checking device detection is higher than the detection signal of the 4th default hydraulic pressure value, the inlet valve, the pressurization are triggered The control circuit of device, second inlet valve and the pure water return valve, to control the inlet valve, pressurization dress It sets, the work of second inlet valve and the pure water return valve, to be rinsed to the membrane filter；The controller receives When the hydraulic pressure value detected to the third pressure-detecting device is lower than the detection signal of the 5th default hydraulic pressure value, the water inlet is triggered The control circuit of valve, the supercharging device, second inlet valve and the pure water return valve, with control the inlet valve, The supercharging device, second inlet valve and pure water return valve work, so that the membrane filter starts water processed；Its In, the 4th default hydraulic pressure value is greater than the 5th default hydraulic pressure value.

Technical solution of the present invention, by closing the intake switch at the end of water inlet system water, so that The pure water that the membrane filter of the water purification system is produced flows into the first water storage of water storage device by pure water return pipe and the first pipeline It is intracavitary, and after being packed into a certain amount of pure water in first water storage cavity, it can be by the pure water return valve of the water purification system It opens, so that the pure water that the membrane filter is produced is rinsed the membrane filter by a variety of rinse modes, and a variety of punchings The mode of washing can be applied in combination；

It is arranged such, it is ensured that ion infiltration will not occur when the water purification system is in standby, in the membrane filter Saturating problem, so ensure the water quality for the first cup pure water that water purification system next time, booting was produced can satisfy for need It asks；And extend the service life of membrane filter.

A variety of modes for rinsing membrane filter are optional, and different backwashing manners can be applied in combination, and significantly increase punching The washability of mode is washed, so that user can select backwashing manner the most suitable according to actual needs, to realize membrane filtration The flushing of core while the low TDS of acquisition first cup water, or promotes the effect rinsed or reduces the water rinsed；Or reduce net The volume of hydrophone；Or it reduces noise during rinsing and improves the service life of increasing pump.

In addition, by increase waste water recycling pipeline (waste water recycling pipeline includes, waste water recycling pipe and be arranged on the Two check valves), by the raw water tubes being back to according to demand before pumping from the waste water that membrane filter waste water mouth flows out or storage can be recycled to In the second water storage cavity of water installations, effluent part is reused, therefore our water purification system can save 60-80% Rinse the water of consumption.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with The structure shown according to these attached drawings obtains other attached drawings.

Fig. 1 is the structural schematic diagram of one embodiment of water purification system of the present invention；

Fig. 2 is the structural schematic diagram of water storage device in Fig. 1；

Fig. 3 is the structural schematic diagram of another embodiment of water purification system of the present invention；

Fig. 4 is the structural schematic diagram of the another embodiment of water purification system of the present invention；

Fig. 5 is the structural schematic diagram of water purification system another embodiment of the present invention；

Fig. 6 is the structural schematic diagram of water purification system a further embodiment of the present invention.

Drawing reference numeral explanation:

Label	Title	Label	Title
				100	Water purification system	40	First pressure detection device
10	Membrane filter	45	First flow detection device
				a	Raw water tubes
b	Pure water pipe	55	First check valve
				c	Waste pipe	80	Second pressure detection device
15	Inlet valve	85	Second flow detection device
				20	Supercharging device
25	Intake switch	95	Wastewater valve
				d	Pure water return pipe	96	Third pressure-detecting device
30	Pure water return valve	97	5th check valve
				35	Water storage device	98	Front filter element
351	Shell	99	Postposition filter core
				352	Movable part	102	Return of waste water valve
35a	First water storage cavity	h	Return of waste water pipe
				35b	Second water storage cavity	105	Second one-way valve
e	First pipeline	106	Triple valve
				f	Second pipeline	104	First flow-limiting valve
101	6th check valve	j	Waste water recycling pipeline
				103	Waste water proportional valve	107	Second inlet valve
108	TDS sensing device

The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its His embodiment, shall fall within the protection scope of the present invention.

It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention, Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship, Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.

In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution Conjunction is not present, also not the present invention claims protection scope within.

The present invention mainly describes the various ways being rinsed after water processed to membrane filter, net adequately to reduce TDS value in the first cup water of hydrophone.Wherein, membrane filter is rinsed, the water purification system has a variety of cleaning models, and not Same cleaning model can be applied in combination.In addition, passing through the setting of waste water recycling pipeline in the present invention, can will give up from membrane filter The waste water of mouth of a river outflow is back to the raw water tubes before pumping according to demand or is recycled in the second water storage cavity of water storage device, so that part Waste water can be reused, and save 60-80% because rinsing the water of consumption.

The present invention proposes a kind of water purification system 100, please refers to Fig. 1, it is real that Fig. 1 shows water purification system 100 1 of the invention Apply the structural schematic diagram of example, the water purification system 100 include membrane filter 10, inlet valve 15, supercharging device 20, intake switch 25, The components such as pure water return valve 30, water storage device 35.

The membrane filter 10 has raw water mouth, pure water mouth and waste water mouth；Wherein, the raw water mouth of the membrane filter 10 and original Water pipe a (i.e. running water pipe or the water pipe being connected to water source) connection；The pure water mouth of the membrane filter 10 is connected to pure water pipe b, The pure water discharge produced for the membrane filter 10；The waste water mouth of the membrane filter 10 is connected to waste pipe c, for the membrane filtration The waste water discharge generated when 10 Pure-water Making of core.

The inlet valve 15 can be solenoid valve, be also possible to armstrong's patent valve, does not do and has to the inlet valve 15 at this The restriction of body, the inlet valve 15 are installed on the raw water tubes a, are in and are beaten in 100 Pure-water Making of water purification system Open state is in close state when the water purification system 100 is standby.

By taking booster pump as an example, booster pump 20 is installed on the raw water tubes a supercharging device 20, preferably, the increasing Press pump 20 is installed on the raw water tubes a between the membrane filter 10 and the inlet valve 15, and the booster pump 20 not only drives institute The raw water stated in raw water tubes a flows into the membrane filter 10, but also the raw water hydraulic pressure in the raw water tubes a can be improved, with The raw water hydraulic pressure for ensuring to flow into the membrane filter 10 is sufficiently high, and then ensures that the membrane filter 10 being capable of normal Pure-water Making.

Preferably, the booster pump 20 be freq uency conversion supercharging pump 20, due to freq uency conversion supercharging pump 20 frequency be it is adjustable, thus The working frequency for adjusting freq uency conversion supercharging pump 20 according to their own needs convenient for user, it is a large amount of pure when needing to obtain in user's short time When water, the working frequency that freq uency conversion supercharging can be pumped 20 by user is turned up, and passes through freq uency conversion supercharging pump 20 within the unit time at this time Raw water water can be relatively more, to ensure that the raw water water entered in the membrane filter 10 in the unit time can also increase accordingly Add, and then is conducive to improve the pure water amount obtained in 10 unit time of membrane filter；When needing to obtain in user's short time Pure water amount it is less when, user can by freq uency conversion supercharging pump 20 working frequency turn down, pass through frequency conversion within the unit time at this time The raw water water of booster pump 20 is fewer, but the raw water entered in the membrane filter 10 can be filtered adequately, in turn Be conducive to improve the utilization rate of water resource.

The intake switch 25 can be solenoid valve, can be solenoid valve, be also possible to armstrong's patent valve, at this to described Intake switch 25 does not do specific restriction；The intake switch 25 is installed on the water outlet of the pure water pipe b, takes in user It is in the open state when pure water, it is in close state at the end of user's water intaking.The intake switch 25 can also be intelligence Intake switch when intake switch opens or closes, can will open or close signal automatically and send controller to.

The pure water return pipe d is for the pure water pipe b to be connected to the raw water tubes a, water inlet end and the membrane filtration Pure water pipe b connection between core 10 and the intake switch 25, water outlet and the inlet valve 15 and the booster pump 20 it Between raw water tubes a connection.Pure water return pipe d and raw water tubes a are connected to the first tie point M；

The pure water return valve 30 is installed on the pure water pipe b, and the pure water return valve 30 can be solenoid valve, can also To be armstrong's patent valve, at this specific restriction is not done to the pure water return valve 30；The pure water return valve 30 is for controlling The pure water return pipe d's turns on or off.

Water storage device 35 comprising shell 351 and the movable part 352 being movably installed in the shell 351, the work Moving part 352 is by the shell 35 every being set as mutually independent first water storage cavity 35a and the second water storage cavity 35b, first water storage Chamber is connected to by the first pipeline with the pure water return pipe of the pure water return valve influent side, and second water storage cavity passes through the second pipe Road is connected to water source, and the water source can be the raw water into the raw water tubes.

The water storage device 35 is for storing pure water, please with reference to Fig. 2 comprising shell 351 with inner cavity and The movable part 352 being movably installed in the shell 351, the movable part 352 are mutual every being set as by the inner cavity of the shell 351 Independent first water storage cavity 35a and the second water storage cavity 35b, wherein the first water storage cavity 35a by the first pipeline e with it is described The pure water return pipe d of 30 influent side of pure water return valve is connected to, and the second water storage cavity 35b is connected to by the second pipeline f with water source； And

Waste water recycling pipeline, one end of the return of waste water pipe are connected to the waste pipe c, the other end and the raw water tubes It is connected to third tie point P, the third tie point P is on the raw water tubes between raw water inlet and the booster pump；It is described Waste water recycling pipeline is used to guide the waste water of membrane filter to before pumping raw water tubes or flows back into weight in the second water storage cavity of water storage device It is new to use；Wherein, if only recycling first part's waste water, the third tie point P is located at raw water inlet and the increasing On raw water tubes between press pump；If first part and second part waste water, the third tie point P are recycled in optimization simultaneously It need to be on the raw water tubes between raw water inlet and the inlet valve.In the present embodiment, by increasing waste water recycling pipeline, waste water Reuse pipeline includes waste water recycling pipe j and the second one-way valve being arranged on 105, one end and the waste pipe c of waste water recycling pipe j Connection, the raw water tubes connection between the other end and raw water inlet and the booster pump, when needing the filtered waste water of membrane filter When reuse, the second inlet valve is closed, waste water recycling pipeline can be by the waste water flowed out from membrane filter waste water mouth according to demand It send in the second water storage cavity of raw water tubes or water storage device to inlet valve far from booster pump one end, waste water is reused； To greatly reduce the water consumed when flushing, the utilization rate of water greatly improved.Wherein, second one-way valve 105 is set It sets so that only waste water being allowed to flow to raw water tubes from membrane filter in waste water recycling pipeline, the raw water in raw water tubes being avoided to be expelled directly out； In addition first flow-limiting valve 104 can also be set on waste water recycling pipeline, so that flow velocity of the waste water in waste water recycling pipeline can To be adjusted, be conducive to the flow velocity for preferably controlling waste water recycling.

" wastewater valve " of water purification industrial practice refer to set foraminate solenoid valve block at.When the solenoid valve of wastewater valve is closed When, waste water can only be flowed out from aperture, and flow is limited, and flow velocity depends on the pressure of water and the size of aperture.Work as wastewater valve Solenoid valve open when, wastewater valve standard-sized sheet, waste water energy be directly over solenoid valve outflow, at this time wastewater valve do not have metering function.

Lower mask body introduces the form of several realizations:

The first is provided with wastewater valve 95 and the second inlet valve 107, the wastewater valve referring to Fig.1 on the waste pipe c 95 between second inlet valve 107 and the waste water mouth of the membrane filter；The water inlet end of the waste water recycling pipeline j and institute State the waste pipe c connection between wastewater valve and the second inlet valve 107.

In the present embodiment, when the second inlet valve 107 is opened, waste water is expelled directly out from waste pipe c；When the second inlet valve When 107 closing, waste water flows back on the raw water tubes before pumping or in the second water storage cavity of water storage device by waste water recycling pipeline j.

Second, referring to Fig. 3, it is provided with wastewater valve 95 and triple valve 106 on the waste pipe c, the triple valve 106 Water inlet is connected to the waste water mouth of the membrane filter, and the first water outlet of the triple valve 106 is connected to the wastewater valve 95, institute The second water outlet for stating triple valve 106 is connected to the water inlet end of the waste water recycling pipeline j.

When opening into the first water outlet for triple valve 106, when the second water outlet is closed, waste water is discharged from waste pipe c；When three Port valve 106 is closed into the first water outlet, when the second water outlet is opened, before waste water flows back into pump by waste water recycling pipeline j On raw water tubes or in the second water storage cavity of water storage device.

The third, referring to Fig. 4, water purification system as described in claim 1, which is characterized in that be arranged on the waste pipe c There are wastewater valve 95 and the second inlet valve 107, the wastewater valve 95 is located at the waste water of second inlet valve 107 and the membrane filter Between mouthful；Waste pipe between the water inlet end and the wastewater valve 95 of the waste water recycling pipeline and the waste water mouth of the membrane filter C connection.

In the present embodiment, when the second inlet valve 107 is all opened, a part of waste water is directly expelled directly out from waste pipe c, separately A part of waste water flows back on the raw water tubes before pumping by waste water recycling pipeline j；When the second inlet valve 107 is closed, waste water warp It crosses on the raw water tubes before waste water recycling pipeline j flows back into pump or in the second water storage cavity of water storage device.

4th kind, referring to Fig. 5, the return of waste water pipe h in the first situation and following example cooperates；

5th kind, Parameter Map 6, second case cooperates with the return of waste water pipe h in following example.It is detailed in following waste water Return schemes.

It is worth noting that in the above embodiments, it is unidirectional that second can be provided on the waste water recycling pipeline Valve 105；The second one-way valve 105 is from the waste water mouth of the membrane filter to third tie point P one-way conduction.The embodiment can be with It is combined with the other embodiments in the application.The first flow-limiting valve can also be arranged on the waste water recycling pipeline in optimization 104, further to adjust the wastewater flow of reuse.

Certainly, in some embodiments, water purification system further includes return of waste water pipe, one end of the return of waste water pipe and institute Waste pipe connection is stated, the other end and the raw water tubes are connected to the second tie point N, before the second tie point N is located at booster pump Raw water tubes on；Return of waste water valve, the return of waste water valve are all set on the return of waste water pipe.

Return of waste water pipe h, one end of the return of waste water pipe h are connected to the waste pipe, the other end and the raw water tubes It is connected to the second tie point N, the second tie point N is located in the raw water tubes before the booster pump；Return of waste water pipe h is for connecting Logical waste pipe and raw water tubes, so that before effluent part can be back to booster pump, reducing the reality of water purification system when normal water processed The rate of recovery promotes the service life that high-recovery runs lower membrane filter.

Return of waste water valve 102 and the 6th check valve 101, return of waste water valve 102 and the 6th check valve 101 are all set in described On return of waste water pipe h；The return of waste water valve 102 can be solenoid valve, be also possible to mechanical valve, at this to the return of waste water Valve 102 does not do specific restriction, and the return of waste water valve 102 is installed on return of waste water pipe h, to control whether waste water flows back. Its in the water purification system Pure-water Making in opening or closing state, when the water purification system is rinsed the stage at In closed state.6th 101, check valve permission water flows to raw water tubes from waste pipe, does not allow water to flow to waste water from raw water tubes Pipe.

It should be noted that the movable part 352 can be diaphragm, piston or other can be transported under the impact of fluid Structure that is dynamic or can generating deformation, is just not listed one by one herein, due to the movable part 352 be movably installed in it is described In shell 351, this allows for hydraulic pressure of the movable part 352 in the first water storage cavity 35a and second water storage cavity Hydraulic pressure in 35b when there is pressure difference can activity so that the first water storage cavity 35a and the second water storage cavity 35b A high meeting of middle hydraulic pressure squeezes out the water in low one of hydraulic pressure.

When user needs to take pure water, the intake switch 25 and the inlet valve 15 are opened simultaneously, it will be described pure Water return valve 30 remains turned-off, while the booster pump 20 being opened, and the booster pump 20 drives the raw water in the raw water tubes a It flows into the membrane filter 10, the membrane filter 10 also generates waste water while pure water is made to raw water filtration, pure water passes through institute Pure water pipe b outflow is stated so that user takes, waste water is discharged by the waste pipe c；Or a part of waste water passes through the waste pipe c Discharge, before another part flows back into booster pump by return of waste water pipe.

At the end of user's water intaking, the intake switch 25 is closed, the inlet valve 15 is kept open, by institute It states pure water return valve 30 to continue to remain off, while the booster pump 20 being kept it turned on, so that the membrane filtration Core 10 can continue to Pure-water Making, and the pure water produced of the membrane filter 10 passes through the pure water return pipe d and described the One pipeline e enters in the first water storage cavity 35a；When the first water storage cavity 35a is provided with default pure water amount, according to default Rinse mode control the work of the inlet valve 15, the booster pump 20, pure water return valve 55 and second inlet valve 107 Make, while by the second pipeline f water flowing into the second water storage cavity 35b, making the pure water in the first water storage cavity 35a Flow into the membrane filter 10 and the membrane filter 10 be rinsed so that the raw water being originally present in the membrane filter 10 and Waste water is gone out by pure water rinsing, so that there is only pure water in the membrane filter 10, and then avoids the membrane filter 10 The problem of interior generation ion is spread.

It should say, when being rinsed to the membrane filter 10, a variety of rinse modes, different rinse modes can be carried out It will be pumped when lower opening/closing such as following table with valve.And different rinse modes can be combined with each other when rinsing.For example it can first use mode After 4 rinse a period of time, it is rinsed in the mode that is switched to 3.

The working condition table of rinse mode and each water route component

Below by taking rinse mode 4 as an example, the single mode flushing process of this water purification system is introduced.

Rinse mode 4: when carrying out the flushing of mode 4 to the membrane filter 10, the inlet valve 15 is in close state, described Booster pump 20 is in the open state, can ensure in this way the membrane filter 10 when being rinsed by pure water, the membrane filter 10 Pure-water Making can also be kept, the pure water in pure water and the first water storage cavity 35a that the membrane filter 10 is produced leads to together It crosses the pure water return pipe d to flow back into the membrane filter 10, under the catharsis of the membrane filter 10, a portion is net Be melted into pure water, and be back in the membrane filter 10 again by the pure water return pipe d, with to the membrane filter 10 again into Row rinses, and another part pure water then forms waste water and carries the TDS in the membrane filter 10 and is discharged together from the waste pipe c； Pure water in first water storage cavity 35a of the water storage device 35 is squeezed out and is passed through described by the water in the second water storage cavity 35b Pure water return pipe d is flowed into the membrane filter 10, thus effectively supplements the waste water by waste pipe c discharge, from And it ensure that entire water purification system 100 and, when being rinsed to the membrane filter 10, while also assuring 20 He of booster pump The membrane filter 10 good can be run, and avoid the booster pump 20 and the membrane filter 10 is operating abnormally because of water shortage Problem occurs.During flushing can according to rinse the signals such as duration or waste water TDS control the opening of the second inlet valve/ It closes, the second water storage cavity of water storage device will be recovered to when partial flushing from the concentrated water that waste water mouth is discharged.

It is rinsed below in the combination for by taking rinse mode 4- rinse mode 3 combines rinse mode as an example, introducing this water purification system Process.

Rinse mode 4- rinse mode 3 combine rinse mode: first to the membrane filter 10 carry out mode 4 rinse, it is described into Water valve 15 is in close state, and the booster pump 20 is in the open state, can ensure the membrane filter 10 by pure water in this way When being rinsed, the membrane filter 10 can also keep Pure-water Making, the pure water and described first that the membrane filter 10 is produced Pure water (under the draft effect of raw water extrusion and booster pump in the second water storage cavity 35b) in water storage cavity 35a leads to together It crosses the pure water return pipe d to flow back into the membrane filter 10, the membrane filter 10 is rinsed.After rinsing a period of time, System receives mode switching signal (washing time, flow sensor signal, waste water TDS), and rinse mode is switched to mode 3, wastewater valve is opened at this time, the extrusion of water of the remaining pure water in the first water storage cavity 35a in the second water storage cavity 35b is made With being flowed into rapidly under the draft with booster pump in membrane filter and go out concentrated water in membrane filter.Believe to the end of system receives flushing After number after (washing time, pump current signal, flow sensor signal, waste water TDS, high-voltage switch gear), system enters standby mode. It is arranged such, it is ensured that when the water purification system 100 is in standby, ion infiltration will not occur in the membrane filter 10 Problem, so ensure the water quality of the water purification system first cup pure water that booting was produced 100 next time can satisfy for demand.

It should say, be that any rinse mode of selection can be according to raw water after the water purification system 100 water processed Water quality, the service life of booster pump and membrane filter, consumer to the acceptance level of flushing effect, the duration of cleaning and noise or Other factors determine, are herein just not listed one by one.

In view of user is when using the water purification system 100, the section control water purification system in different times is needed Being turned on or off for 100 different elements, thus brings inconvenience to users, in consideration of it, water purification system 100 of the invention Further include controller (not shown), the controller can be single-chip microcontroller or PWM controller, the controller respectively with it is described Inlet valve 15, booster pump 20, intake switch 25, the second inlet valve 107 and pure water return valve 30 in water purification system 100 are electrically Connection, the controller control the corresponding first device of the water purification system 100 when the water purification system 100 is in different conditions Part work.

When user needs to fetch water, the intake switch 25 can be opened, the controller receives the intake switch 25 When the signal of opening, the control circuit of the inlet valve 15 and the booster pump 20 is triggered, to control the inlet valve 15 and institute The unlatching of booster pump 20 is stated, so that raw water is entered in the membrane filter 10 and is filtered, the film by the raw water tubes a The pure water that filter core 10 is produced is discharged so that user takes, caused by 10 Pure-water Making of membrane filter by the pure water pipe b Waste water then passes through the waste pipe c discharge (Fig. 1)；Or the waste water that a part generates then passes through the waste pipe c discharge；Another portion Point waste water is back to (Fig. 4, Fig. 5) before booster pump by waste water recycling pipeline (Fig. 3) or return of waste water pipeline.

At the end of user's water intaking, the intake switch 25 can be closed, the controller receives the intake switch 25 close signal when, the controller triggers the inlet valve 15, the booster pump 20, the second inlet valve 107 and described The control circuit of pure water return valve 30 continues to keep it turned on, simultaneously to control the inlet valve 15 and the booster pump 20 It controls the pure water return valve 30 to remain off, at this point, the pure water that the membrane filter 10 is produced is flowed back by the pure water Pipe d and the first pipeline e are flowed into the first water storage cavity 35a of the water storage device 35, and will be in the second water storage cavity 35b Water squeeze out.It (can be filled by water level detecting when the controller receives the first water storage cavity 35a equipped with default pure water amount Set, the devices such as flowmeter or booster pump current detection means detect) signal when, the controller triggers the pure water reflux The control circuit of valve 30, according to preset cleaning model, opening/closing pump and valve are to be cleaned.By taking cleaning model 7/8 as an example, institute When stating controller and receiving the signal that the intake switch 25 is closed, the controller triggers the inlet valve 15, the pressurization The control circuit for pumping the 20, second inlet valve 107 and the pure water return valve 30, stays open shape to control the inlet valve 15 State controls the pure water return valve 30 and continues to remain off, while controlling the booster pump 20 and keeping it turned on, so that Obtaining the membrane filter 10 can continue to Pure-water Making, and the pure water that the membrane filter 10 is produced passes through the pure water return pipe d And the first pipeline e enters in the first water storage cavity 35a；When the controller receives the first water storage cavity 35a When signal equipped with default pure water amount, the controller triggers the control electricity of the inlet valve 15 and the pure water return valve 30 Road is closed with controlling the inlet valve 15 and booster pump, controls the pure water return valve 30 and open, wastewater valve opens/closes, together When into the second water storage cavity 35b water flowing and by the first water storage cavity 35a pure water squeeze out, at this point, first water storage cavity The pure water that 35a is extruded flows into the membrane filter 10 and carries out common pure water rinsing to the membrane filter 10, allows in this way The raw water and waste water being originally present in the membrane filter 10 are gone out by pure water rinsing, so that only depositing in the membrane filter 10 In pure water, and then avoid the problem of ion diffusion occurs in the membrane filter 10.

Certainly, at the end of user's water intaking, the controller can also trigger each element (example in the water purification system 100 Such as inlet valve 15, booster pump 20, pure water return valve 30) control circuit, first to carry out other modes to the membrane filter 10 Clean or be combined mode cleaning.Here it is not describing one by one.

Whether the pure water of predetermined amount is packed into the first water storage cavity 35a for the ease of confirming the water storage device 35, at this In one embodiment of invention, Fig. 1 is please referred to, the water purification system 100 further includes first pressure detection device 40 or first flow Detection device 45 or booster pump current detection means or TDS sensor 108, the first pressure detection device 40 or described first Flow detector 45 is installed on the first pipeline e；The controller also with the first pressure detection device 40 or the One flow detector 45 is electrically connected, and the controller is examined according to the first pressure detection device 40, the first flow The testing result for surveying device 45 or booster pump current detection means triggers the inlet valve 15, booster pump 20, described pure The control circuit of water return valve 30 and second inlet valve 107, to control the inlet valve 15, booster pump 20, described Pure water return valve 30 and second inlet valve 107 work.

When being equipped with first pressure detection device 40 on the first pipeline e or pure water return pipe d, Xiang Suoshu water storage dress When setting the 35 built-in pure water of the first water storage cavity 35a, the hydraulic pressure on the first pipeline e can be gradually increased, when the water storage device When being packed into default pure water amount in 35 the first water storage cavity 35a, the hydraulic pressure in the first pipeline e can also reach the first default water Pressure, at this point, the controller, which receives the hydraulic pressure value that the first pressure detection device 40 detects, reaches the first default hydraulic pressure After detecting signal, the inlet valve 15, the booster pump 20, second inlet valve 107 and the pure water return valve are triggered 30 control circuit, to be rinsed to the membrane filter 10；When being rinsed to the membrane filter 10, first water storage Pure water in chamber 35a is back in the membrane filter 10 by the pure water return pipe d, can thus make first water storage Pure water in chamber 35a is gradually reduced, so that the hydraulic pressure in the first pipeline e can also gradually decrease, when the controller It receives the first pressure detection device 40 and detects that the hydraulic pressure in the first pipeline e reaches the second default hydraulic pressure (second Default hydraulic pressure will be lower than the first default hydraulic pressure setting) when, the controller triggers the inlet valve 15, the booster pump 20, institute The control circuit of the second inlet valve 107 and the pure water return valve 30 is stated, stopping is rinsed the membrane filter 10.

When being equipped with first flow detection device 45 on the first pipeline e, the first storage of Xiang Suoshu water storage device 35 When the built-in pure water of water cavity 35a, increased by the passage at any time on the first pipeline e, when the first flow detects When device 45 detects loading predetermined amount pure water in the first water storage cavity 35a, cleaning model is triggered,；When the first flow When detection device 45 detects discharge predetermined amount pure water in the first water storage cavity 35a, the controller triggers the inlet valve 15, the control circuit of the booster pump 20, second inlet valve 107 and the pure water return valve 30 stops to the film Filter core 10 is rinsed.

When the water purification system is equipped with booster pump current detection means, the first water storage cavity of Xiang Suoshu water storage device 35 When the built-in pure water of 35a, the booster pump electric current can be gradually increased, and be packed into when in the first water storage cavity 35a of the water storage device 35 When default pure water amount, the booster pump electric current can also reach the first pre-set current value, at this point, the controller receives the increasing After the current value of press pump current detection means detection reaches the first pre-set current value, the inlet valve 15, the booster pump are triggered 20, the control circuit of second inlet valve 107 and the pure water return valve 30, to be rinsed to the membrane filter 10； When being rinsed to the membrane filter 10, the pure water in the first water storage cavity 35a is back to by the pure water return pipe d In the membrane filter 10, the pure water in the first water storage cavity 35a can thus be made to be gradually reduced, gradually water shortage is empty for booster pump Turn, so that the electric current of the booster pump can also gradually decrease, when the controller receives the booster pump current detecting When device detects that the booster pump electric current reaches the second pre-set current value (the second predetermined current will be lower than the first predetermined current), The controller triggers the inlet valve 15, the booster pump 20, second inlet valve 107 and the pure water return valve 30 Control circuit, stopping the membrane filter 10 is rinsed.

Further, the water purification system 100 further includes the first check valve 55, and first check valve 55 is installed on described On the pure water return pipe d of 30 water outlet side of pure water return valve, so set, when being on the one hand avoided that normal water processed, described in raw water warp Pure water return pipe d enters in the first water storage cavity 35a of the water storage device 35；On the other hand the raw water can be efficiently avoided Raw water in pipe a interferes the pure water reflux in the pure water return pipe d, and then convenient in the first water storage cavity 35a It is flowed into the raw water tubes a with the pure water in the pure water pipe b by the pure water return pipe d.

For the ease of controlling the duration being rinsed to the membrane filter 10, the water purification system 100 further includes the second pressure Force checking device 80, the second pressure detection device 80 is installed between booster pump 20 and membrane filter 10 or film on waste pipe c Between the waste water mouth of filter core 10 and the second inlet valve 107；The controller also with the second pressure detection device 80 or Two flow detectors 85 are electrically connected, and the pressure value that the controller detect in the second pressure detection device 80 is lower than the When three default hydraulic pressure values, triggers the inlet valve 15, the booster pump 20, second inlet valve 107 and the pure water and return The control circuit of valve 30 is flowed, the membrane filter 10 is rinsed with stopping executing.

For the ease of controlling the duration being rinsed to the membrane filter 10, the water purification system 100 further includes TDS sensing Device 108, TDS sensing device 108 are installed on waste pipe c, when the TDS sensing device 108 detects that the TDS of waste water is lower than When default first TDS value, the membrane filter 10 is rinsed with stopping executing.

In addition when using rinse mode is combined, first flow detection device 45 detects that the first water storage cavity of water storage device is arranged When pure water amount reaches predetermined amount out；When TDS sensing device 108 detects that the TDS of waste water is lower than default 2nd TDS value；Or meter When device when detecting that washing time reaches preset duration, be rinsed pattern switching.

Obviously, the water purification system 100 can also control rushing to the membrane filter 10 by other detection devices Duration is washed, for example, the water purification system 100 can also include the timer (not shown) being electrically connected with the controller, institute Timer is stated for detecting the water inlet duration of the second water storage cavity 35b, since the pure water return valve 30 is only in the film It is just opened when filter core 10 is rinsed, that is to say, that the duration and the second water storage cavity 35b that the pure water return valve 30 is opened Water inlet duration it is suitable, therefore, the timer can be by detecting the opening duration of the pure water return valve 30 to determine The water inlet duration of the second water storage cavity 35b is stated, i.e., detects the pure water return valve when the controller receives the timer 30 durations opened are when reaching preset duration, the controller trigger the inlet valve 15, the booster pump 20, described second into The control circuit of water valve 107 and the pure water return valve 30, to stop being rinsed the membrane filter 10.

Lead to occur ion diffusion in the membrane filter 10 in order to avoid 100 stand-by time of water purification system is too long Phenomenon, the water purification system 100 are additionally provided with time set (not shown), and the time set is for detecting the water purification system 100 standby times, the controller and the time set are electrically connected, and the controller is according to the detection of the time set As a result, triggering the control of the inlet valve 15, the booster pump 20, second inlet valve 107 and the pure water return valve 30 Circuit processed, to control the inlet valve 15, the booster pump 20, second inlet valve 107 and the pure water return valve 30 Work, to be rinsed to the membrane filter 10.

When being in standby due to the water purification system 100, the booster pump 20 is to be in close state, the water purification When system 100 is in water state processed or rinses state, the booster pump 20 be it is in the open state, therefore, timing dress The standby time of the water purification system 100 can be determined by detecting the standby time of the booster pump 20 by setting.When the control When device processed receives the time set and detects that the standby time of the booster pump 20 reaches the signal of default standby time, institute It states controller and triggers the inlet valve 15, the booster pump 20, second inlet valve 107 and the pure water return valve 30 Control circuit, to be rinsed to the membrane filter 10.So set, ensure that the membrane filter 10 of the water purification system 100 is every It will be cleaned once, this assures ion diffusion phenomena will not occur inside the membrane filter 10, together every a period of time When also ensure the freshness of water in the membrane filter 10.

It is, of course, also possible to which by the way that a cleaning switch is arranged on the controller, user is defeated by the cleaning switch Enter clear instruction, the controller receive trigger after clear instruction the inlet valve 15, the booster pump 20, described second into The control circuit of water valve 107 and the pure water return valve 30, to control the inlet valve 15, the booster pump 20, described Two inlet valves 107 and the pure water return valve 30 work, to be rinsed to the membrane filter 10.

For the ease of confirming whether the water purification system 100 terminates water processed, i.e. taking convenient for the confirmation water purification system 100 Whether taps 25 close, and please refer to Fig. 1, Fig. 3, Fig. 4 or Fig. 5, in one embodiment of this invention, the water purification system 100 further include third pressure-detecting device 96, the third pressure-detecting device 96 can be pressure sensor, pressure switch or Other are able to detect the device of hydraulic pressure to person, and the third pressure-detecting device 96 is installed on the pure water pipe b, is used to detect Hydraulic pressure in the pure water pipe b.Specifically, the membrane filter 10 can't stop immediately when the intake switch 25 is closed Water processed, but the pure water that the membrane filter 10 is produced can be discharged into the pure water pipe b, at this point, the hydraulic pressure meeting in the pure water pipe b Increase, reaches the when the controller receives the hydraulic pressure that the third pressure-detecting device 96 detects in the pure water pipe b When the signal of four default hydraulic pressure values, the controller can trigger the inlet valve 15, the booster pump 20 and the pure water and return Valve 30 is flowed, to be rinsed to the membrane filter 10；When the intake switch 25 is opened, the controller receives described the When three pressure-detecting devices 96 detect the hydraulic pressure in the pure water pipe b lower than five default hydraulic pressure values, the controller can be touched Send out inlet valve 15, the booster pump 20 and the pure water return valve 30 described, to start water processed.

For the ease of confirming whether the intake switch is opened, Intelligent water taking switch is can be used in intake switch, and water intaking is opened When closing opening, signal is transmitted directly to controller, and the controller can trigger the inlet valve 15, the booster pump 20 and institute Pure water return valve 30 is stated, to start water processed.

In order to improve the detection accuracy of the third pressure-detecting device 96, the water purification system 100 is additionally provided with the 5th Check valve 97, the 5th check valve 97 are installed on the pure water pipe b between the excessively described membrane filter 10 and the intake switch 25, The water inlet end of the pure water return pipe d is installed on the pure water pipe b between the membrane filter 10 and the 5th check valve 97.Such as This setting, it is ensured that the pure water in the pure water pipe b of 97 water outlet side of the 5th check valve will not be back in the membrane filter 10, And then ensure the accuracy of the hydraulic pressure in pure water pipe b that the third pressure-detecting device 96 detects.

In order to extend the service life of the membrane filter 10, in one embodiment of this invention, the water purification system 100 is also Including front filter element 98, the front filter element 98 is installed on the raw water tubes a.It should be noted that the front filter element 98 Quantity can be one, multiple perhaps composite filter elements front filter element 98 can be P cotton filter core, active carbon filter core or Other filter cores with filtering function, do not do specific restriction herein.Front filter element 98 is set before the membrane filter 10, in this way It just can be effectively filtered large granular impurity in raw water, and then avoid granule foreign in raw water and be attached to the membrane filter 10 On interior, and the problem for causing the membrane filter 10 blocked occurs, and then appearance the problem of shorten 10 service life of membrane filter.

Preferably, the front filter element 98 is composite filter element, which includes non-woven fabrics, carbon fiber and three layers of P cotton It is compounded to form, i.e. the composite filter element set function of carbon fiber filter core and P cotton filter core, namely with a filter core can replace two Filter core, which reduces the quantity of front filter element 98, so that installation space required for entire water purification system 100 is more It is small.

In order to promote the water quality and mouthfeel of pure water, in one embodiment of this invention, Fig. 1, Fig. 3, Fig. 4 or figure are please referred to 5, the water purification system 100 further includes postposition filter core 99, and the postposition filter core 99 is serially connected on the pure water pipe b.It needs to illustrate , the quantity of the front filter element 98 can be one, multiple or composite filter element.The postposition filter core 99 can be work Property filtration core or ultra-filtration element, active carbon filter core can go chlorine residue in water removal, different mainly using active carbon as primary raw material Taste etc., while the mouthfeel of water can also be improved, and then be conducive to be promoted the experience of user, ultra-filtration element can further be gone in water removal The pollutants such as colloid, iron rust, suspended matter, silt and larger molecular organics.

It should say to be, in the various embodiments of the invention, inlet valve 15, booster pump 20 in the water purification system 100, The control circuit of pure water return valve 30, the second inlet valve 107 and other elements is existing circuit, at this to the water purification The control circuit of each element just repeats no more in system 100.

Present water purifier gradually develops to high-recovery (waste water ratio), but the rate of recovery is too high that will lead to the membrane filter service life fast Speed decaying can be arranged return of waste water pipeline in water purifying apparatus system, reduce normal reality during water production to promote filter element life The border rate of recovery, so that it is guaranteed that membrane filter also has a longer life expectancy under high-recovery (such as 50% or even 75% rate of recovery).This It applies for a patent middle Fig. 1 and Fig. 3 is the example for being not provided with return of waste water pipeline, Fig. 4 is return of waste water pipeline and Sewage treatment pipeline Two-in-one example, Fig. 5 and Fig. 6 are the examples provided with return of waste water pipeline.In addition the example in Fig. 1 and Fig. 5 is by The example of the realization waste water recycling/not reuse switching of two inlet valves 107, Fig. 3 and Fig. 6 are real by triple valve (One In and Two Out valve) The switching of existing waste water recycling/not reuse.Fig. 5 and Fig. 6 is the switching that return of waste water/do not flow back is realized by return of waste water valve.

Such as Fig. 1 example, return of waste water pipe j water inlet is located between wastewater valve 95 and the second inlet valve 107.When the second water inlet When valve 107 is opened, waste water is discharged through wastewater valve 95 and the second inlet valve 107 from waste pipe；When the second inlet valve 107 is closed, Waste water carries out reuse through wastewater valve 95, waste water recycling pipeline j；

Such as Fig. 3 example, wastewater valve 95 is located at the outlet of triple valve 106 1, and it is another that Sewage treatment pipeline j is located at triple valve 106 Outlet is connected.When exporting opening where 106 wastewater valve 95 of triple valve, waste water is discharged through wastewater valve 95 from waste pipe；Work as threeway When outlet where 106 Sewage treatment pipeline j of valve is opened, waste water carries out reuse through waste water recycling pipeline j；

Such as Fig. 4 example, return of waste water pipe j water inlet is between membrane filter waste water end and wastewater valve 95.When the second water inlet When valve 107 is opened, a part of waste water is discharged through wastewater valve 95 and the second inlet valve 107 from waste pipe, and another part waste water is through useless Water reuse pipeline j reflux；When the second inlet valve 107 is closed, waste water carries out reuse through waste water recycling pipeline j；

As shown in Fig. 5 example, return of waste water pipe j water inlet is located between wastewater valve 95 and the second inlet valve 107.When second When inlet valve 107 is opened, a part of waste water is discharged through wastewater valve 95 and the second inlet valve 107 from waste pipe, another part waste water Through return of waste water pipeline h reflux (when return of waste water valve 102 is opened)；When the second inlet valve 107 is closed, a part of waste water is through useless Water valve 95 and waste water recycling pipeline j reuse, another part waste water flows back through return of waste water pipeline h, and (return of waste water valve 102 is opened When)；

As shown in Fig. 6 example, wastewater valve 95 and return of waste water pipeline h are located at the outlet of triple valve 106 1, Sewage treatment pipeline J is connected with another outlet of triple valve 106.When exporting opening where 106 wastewater valve 95 of triple valve, a part of waste water is through wastewater valve 95 are discharged from waste pipe, and another part waste water flows back (when return of waste water valve 102 is opened) through return of waste water pipeline j；Work as triple valve When outlet where 106 Sewage treatment pipeline j is opened, waste water carries out reuse through waste water recycling pipeline j.

Each specific work process and waste water recycling mechanism for implementing example water purifier is specifically described below.

The specific work process of water purifier is divided into three phases:

Normal water stage processed-water storage device first chamber fills the pure water stage-wash phase.

The normal water stage processed:

Intake switch is opened, and pump, inlet water solenoid valve 1 are opened；Pure water return valve is opened, and the second inlet valve is returned according to waste water Close/open is carried out with/not reuse；Return of waste water valve (Fig. 5, Fig. 6 example) is according to return of waste water, and/do not flow back and open/closes It closes.

Waste water recycling: raw water enters booster pump through inlet water solenoid valve 1, is filtered after pressurization into membrane filter, In filtered pure water flowed out through pure water pipe c, remaining concentrated water is flowed out through waste water end after filtering.In the rigid incipient stage of water processed, Since the concentrated water TDS being discharged from waste water end is very low, the second inlet valve is closed into (Fig. 1, Fig. 4, Fig. 5) at this time or triple valve gives up Water recovery culvert exports (Fig. 3, Fig. 6) and opens, before concentrated water is recycled to pump through waste water recovery pipe, again water processed (Fig. 1, Fig. 3, Fig. 4)；Or before a part of concentrated water is through being recycled to pump through waste water recovery pipe, another part flows back through return of waste water pipe (Fig. 5, Fig. 6).

Waste water not reuse: with the lasting progress of water processed, waste water TDS is gradually increasing, and is not suitable for continuing reuse, at this time by the Two inlet valves open (Fig. 1, Fig. 4, Fig. 5) or open triple valve waste water valve outlet (Fig. 3, Fig. 6), and concentrated water is direct through wastewater valve It is discharged (Fig. 1, Fig. 3)；Or a part of concentrated water is discharged through wastewater valve, another part flows back through return of waste water pipe (Fig. 4, Fig. 5, Fig. 6).

Water storage device first chamber fills the pure water stage:

When intake switch is closed, water storage device first chamber fills the pure water stage.

The normal Pure-water Making of water purifier at this time, pure water flow into water storage device first chamber through pure water return line, and by the Water in two chambers squeezes out, for water processed again.

This stage control program and normal water stage processed are essentially identical.Fig. 5 and Fig. 6 example can determine according to the actual situation Whether this fixed stage opens/closes return of waste water valve and carries out return of waste water/do not flow back.

Wash phase:

When water storage device first chamber is packed into the pure water of predetermined amount, into wash phase.

At this time according to cleaning procedure is preset, controller control inlet water solenoid valve 1, pump, wastewater valve are opened/closed.

Mode 5,6,7,8: when cleaning, raw water enters water storage device second chamber, and the pure water in first chamber is squeezed out It is gone out into membrane filter, and by the concentrated water in membrane filter.Since pump is not turned under these modes, no driving force by Sewage treatment, Waste water is directly discharged through waste water circuit.

Mode 1,2,3,4: raw water enters second chamber, in addition the draft of booster pump, the pure water in first chamber squeeze out to In membrane filter, and the concentrated water in membrane filter is gone out.Since pump is opened under these modes, pump provides driving force for Sewage treatment.

The waste water TDS at cleaning initial stage, discharge is very high, is not suitable for recycling, and concentrated water is directly over waste line discharge at this time.

With the progress of cleaning, waste water TDS is gradually decreased, at this time by the second inlet valve close (Fig. 1, Fig. 4, Fig. 5) or Triple valve Sewage treatment tube outlet (Fig. 3, Fig. 6) is opened.According to default cleaning procedure, concentrated water is recycled to through waste water recovery pipe Before pump (mode 1,2), water processed again；Or be recovered in water storage device second chamber through waste water recovery pipe (mode 3,4, Pure water is discharged in water storage device first chamber, goes out the concentrated water in membrane filter under the pressurization of pump, due to first chamber Middle pure water discharge, the volume of second chamber increase, and the concentrated water gone out just enters in the increased volume of second chamber), to next A to fill the pure water stage, pure water flows into first chamber, and the concentrated water recycled in second chamber is squeezed out, for water processed again.

The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all in the present invention Inventive concept under, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/be used in it indirectly He is included in scope of patent protection of the invention relevant technical field.

Claims

1. a kind of water purification system, which is characterized in that the water purification system includes:

Membrane filter is connected to the raw water mouth being connected to raw water tubes, the pure water mouth being connected to pure water pipe and with waste pipe useless The mouth of a river；

Inlet valve is installed on the raw water tubes；

Intake switch is installed in the pure water pipe；

Pure water return pipe, the pure water pipe between water inlet end and the membrane filter and the intake switch are connected to, water outlet with Raw water tubes connection between the inlet valve and the supercharging device, and it is connected to the first tie point；

Pure water return valve is installed on the pure water return pipe；

Water storage device comprising shell and be movably installed in the intracorporal movable part of the shell, the movable part is by the shell Every being set as mutually independent multiple chambers；Chamber includes the first water storage cavity and the second water storage cavity, and first water storage cavity passes through the One pipeline is connected to the pure water return pipe of the pure water return valve influent side, and second water storage cavity passes through the second pipeline and water source Connection, the water source can be the raw water into the raw water tubes；

And waste water recycling pipeline, one end of the return of waste water pipe are connected to the waste pipe, the other end and the raw water tubes It is connected to third tie point, the third tie point is on the raw water tubes between raw water inlet and the supercharging device；It is described Waste water recycling pipeline is for will carry out reuse in the return of waste water of membrane filter to raw water tubes or water storage device.

2. water purification system as described in claim 1, which is characterized in that be provided with wastewater valve and the second water inlet on the waste pipe Valve, the wastewater valve is between second inlet valve and the waste water mouth of the membrane filter；

3. water purification system as claimed in claim 2, which is characterized in that it is unidirectional to be provided with second on the waste water recycling pipeline Valve；

4. water purification system as described in claim 1, which is characterized in that it is provided with wastewater valve and triple valve on the waste pipe, The water inlet of the triple valve is connected to the waste water mouth of the membrane filter, the first water outlet and the wastewater valve of the triple valve Connection, the second water outlet of the triple valve are connected to the water inlet end of the waste water recycling pipeline.

5. water purification system as described in claim 1, which is characterized in that the water purification system further include:

One end of return of waste water pipe, the return of waste water pipe is connected to the waste pipe, and the other end is connected to the raw water tubes Second tie point, second tie point are located on the raw water tubes before supercharging device；

Return of waste water valve, return of waste water valve are set on the return of waste water pipe.

6. water purification system as claimed in claim 5, which is characterized in that the water purification system further includes waste water proportional valve, described Waste water proportional valve is set on the return of waste water pipe；

Wastewater valve is provided on the waste pipe, the water inlet end of the return of waste water pipe is connected to the wastewater valve and the waste water Between mouthful.

7. water purification system as claimed in claim 2 or claim 3, which is characterized in that the water purification system further includes controller, the control Device processed flows back with the inlet valve, the supercharging device, the intake switch, second inlet valve and the pure water respectively Valve electrically connects, and when the controller receives the shutdown signal of the intake switch, is rinsed to membrane filter, the water purification System has a variety of cleaning models, and different cleaning models can be applied in combination.

8. water purification system as claimed in claim 2 or claim 3, which is characterized in that the water purification system further includes first pressure detection Device or first flow detection device, the first pressure detection device or first flow detection device are installed on first pipe On the road；

The controller is also electrically connected with the first pressure detection device or first flow detection device, the controller root According to the first pressure detection device or the testing result of first flow detection device, the inlet valve, the pressurization are controlled Device, second inlet valve and pure water return valve work.

9. water purification system as claimed in claim 2 or claim 3, which is characterized in that the water purification system further includes for detecting pressurization The current detection means of device；

The controller and the current detection means are electrically connected, and the controller is according to the detection of the current detection means As a result, controlling the inlet valve, the supercharging device, second inlet valve and pure water return valve work.

10. water purification system as claimed in claim 2 or claim 3, which is characterized in that the water purification system further includes second pressure detection Perhaps the second flow detection device second pressure detection device or second flow detection device are installed on the increasing to device Between pressure device and the membrane filter, or on the waste pipe that is installed between the membrane filter and second inlet valve；

The controller is also electrically connected with the second pressure detection device or second flow detection device, the controller According to the second pressure detection device or the testing result of second flow detection device, the inlet valve, the increasing are controlled Pressure device, second inlet valve and pure water return valve work.

11. water purification system as claimed in claim 2 or claim 3, which is characterized in that the water purification system further includes time set, institute Time set is stated for detecting the standby time of the water purification system；

The controller is also electrically connected with the time set, and the controller is according to the testing result control of the time set The work for making the inlet valve, the supercharging device, second inlet valve and the pure water return valve, to the membrane filtration Core is rinsed；The controller at regular intervals carries out membrane filter primary according to the timing result of the time set It rinses.

12. water purification system as claimed in claim 2 or claim 3, which is characterized in that the water purification system further includes TDS sensing device, The TDS sensing device is installed on the waste pipe；The controller is also electrically connected with the TDS sensing device, described Controller according to the testing result of the time set control the inlet valve, the supercharging device, second inlet valve with And the work of the pure water return valve, to be rinsed to the membrane filter.

13. water purification system as claimed in claim 2 or claim 3, which is characterized in that the water purification system further includes third pressure detecting Device, the third pressure-detecting device are installed in the pure water pipe；

Pure water pipe between the water inlet end of the pure water return pipe and the membrane filter and the third pressure-detecting device is connected to；

The controller is also electrically connected with the third pressure-detecting device, and the controller receives the third pressure inspection Survey device detection hydraulic pressure value be higher than the 4th default hydraulic pressure value detection signal when, trigger the inlet valve, the supercharging device, The control circuit of second inlet valve and the pure water return valve, to control the inlet valve, supercharging device, described Second inlet valve and pure water return valve work, to be rinsed to the membrane filter；The controller receives described When the hydraulic pressure value of third pressure-detecting device detection is lower than the detection signal of the 5th default hydraulic pressure value, the inlet valve, institute are triggered The control circuit of supercharging device, second inlet valve and the pure water return valve is stated, to control the inlet valve, the increasing Pressure device, second inlet valve and pure water return valve work, so that the membrane filter starts water processed；Wherein, described 4th default hydraulic pressure value is greater than the 5th default hydraulic pressure value.