Film group device with scrubbing mechanism and the water purifier using the film group deviceTechnical field
The present invention relates to a kind of film group device with scrubbing mechanism and the water purifier using the film group device, more particularly to family expenses drinkWith water process, belong to water treatment by membrane equipment technical field.
Background technology
Water treatment by membrane is in deep purification for tap water, desalinization, industrial pure water preparation, sewage disposal and reuse, industryThe field extensive uses such as concentration.
In water treatment by membrane field, fouling membrane and Membrane cleaning industry Key Common Technologies problem, Water Sproading rate is high and membrane elementPart long service life, is target that industry is most asked jointly.
At present, household reverse osmosis water purifier continues to use Industrial reverse osmosis water technology, main using coiled reverse osmosis membrane unitPart, 5 grades of purification techniques, cross-flow filtration patterns, prepare pure water.Although reverse osmosis water purifier by take 3 grades pretreatment with 1 andPost processing, the multiple technologies measure such as concentrated water is recycled, concentrated water is recycled, but the running water rate of recovery is typically only 30% or so,Less than the half of the rate of recovery of Treatment of Industrial Water, membrane lifetime is 1-2（Only the Treatment of Industrial Water film effective time is 5% leftIt is right）, the technological gap with Industrial reverse osmosis water process is huge.
Household reverse osmosis water purifier is caused to be water process system with the basic reason of the technological gap of Industrial reverse osmosis water processThe degree of perfection gap of system is huge, is mainly manifested in pretreatment water control system, film rinse-system, Chemical cleaning and Multistage MembranesThe degree of perfection of filtration system is different and implementation to be difficult to degree different.
In terms of fouling membrane is prevented, due to lacking multistage membrane filtration system, existing household reverse osmosis water purifier is by improvingThe flow velocity of running water prevents fouling membrane, should prevent pollution by flow velocity, waste water is reduced again and is produced, inherently conflictBody.Prevent fouling membrane from being restricted by technical bottleneck by the flow velocity for improving running water.
In addition, household reverse osmosis water purifier there is problems in terms of fouling membrane is prevented：
One is the validity problem of pretreatment, due to lacking the water storage device of similar industrial water process, using the pre- place of dynamicScience and engineering skill, activated carbon process time is short, and pretreating effect is limited, it is difficult to reach the water standard of industry pretreatment.
Two is the problem of dechlorination, free chlorine of the prior art in pretreatment link goes water removal, to prevent film from aoxidizing, to filmThe biological pollution of element brings new problem.
In terms of Membrane cleaning, due to lacking perfect Membrane cleaning system, existing household water-purifying machine part is borrowed at industry waterThe backwash measure of reason, increased the complexity of water purifier.If further increasing Chemical cleaning, apparatus structure will moreIt is complicated.
The content of the invention
The purpose of the present invention is, mainly for counter-infiltration household water-purifying machine and Treatment of Industrial Water membrane component service life, waterThe above-mentioned technological gap that the rate of recovery is present, there is provided one kind can prevent fouling membrane, and can mechanical removal and chemical scavenging fouling membraneFilm group device, the Water Sproading rate that makes water purifier is high, membrane lifetime is long, simple system, to overcome the deficiencies in the prior art.
Film group device of the invention and water purifier are especially suitable at dead-end filtration and cross-flow filtration batch (-type) water alternatelyPrepared by reason, such as household reverse osmosis pure water, it is also possible to for production fields such as food and drink processing, industrial concentrating and separatings.
In order to achieve the above object, technical scheme is as follows：
A kind of film group device with scrubbing mechanism, it includes the membrane component and connector of housing, one and the above, membrane componentNon-filtered part is encapsulated as an entirety with connector, and connector is connected with housing, and the filtration fraction of membrane component is arranged in housing,Water inlet, delivery port and cleaning agent hand-hole are provided with housing, membrane component is provided with pure water outlet, in the power of the aqueous solutionPure water is prepared under effect；Scouring part is provided with housing 1, under the driving of the aqueous solution or external impetus, part is cleaned and is madeMove back and forth, the separation layer surface to membrane component carries out friction cleaning.
The above-mentioned film group device with scrubbing mechanism is to clean part to include piston, fin and wiping brush, and fin connects with pistonConnect, wiping brush is connected with fin, wiping brush separates layer surface and contacts with membrane component.
The foregoing film group device with scrubbing mechanism is that piston rod is connected with piston, between the end of piston rod and housingGap coordinates, spring is socketed on piston rod.
The foregoing film group device with scrubbing mechanism is that the inwall of housing has what is extended in parallel along the scouring part direction of motionBoss, offers flow channel for liquids, the hydraulic selector that boss cooperates with flow channel for liquids composition, when the hydraulic pressure is opened on pistonWhen closing unlatching, the aqueous solution flows to delivery port one end near water inlet one end through flow channel for liquids.
The foregoing film group device with scrubbing mechanism is to be provided with lug boss on the inwall tool of housing.
The foregoing film group device with scrubbing mechanism is that fin contains activated carbon, and the mass fraction ratio that activated carbon accounts for fin is0% to 100%.
The foregoing film group device with scrubbing mechanism is, the activated carbon supported bactericide.
A kind of water purifier of film group device of use with scrubbing mechanism, the water purifier includes that pretreatment unit, water pump, band are cleanedThe film group device of mechanism, valve, electric-control system and purified water collecting unit, pretreatment unit are connected with running water water inlet, pre- placeReason unit, water pump, film group device and valve are sequentially connected in series, and purified water collecting unit is connected with the film group device with scrubbing mechanism,After the preprocessed unit preliminary purification of running water, deep purifying is carried out by the film group device with scrubbing mechanism, it is pure after deep purifyingWater purification is incorporated into purified water collecting unit, the delivery port of concentrated or not concentrated running water from the film group device with scrubbing mechanismDraw；The upstream of the film group device with scrubbing mechanism is provided with check valve, and check valve is connected in parallel with water pump；Film with scrubbing mechanismThe downstream of group device is provided with conductance probe, and it is concentrated that conductance probe film group device delivery port of the collection with scrubbing mechanism is drawnThe TDS signal transmissions of running water to electric-control system, for the working condition of control valve.
A kind of water purifier of foregoing film group device of use with scrubbing mechanism is, conductance pop one's head in running water water inlet itBetween be provided with pressure sensor, the feedwater of the film group device with scrubbing mechanism of pressure sensor collection or discharge pressure signal transmission are givenElectric-control system, for the working condition of control valve.
A kind of water purifier of foregoing film group device of use with scrubbing mechanism is, the film group device with scrubbing mechanism to valve itBetween pipeline be provided with domestic water output bypass, domestic water output bypass on be provided with domestic water valve.
A kind of water purifier of foregoing film group device of use with scrubbing mechanism is that the downstream of valve is provided with flow sensor,Measure by the wastewater discharge of valve, to the working condition of control valve.
A kind of water purifier of foregoing film group device of use with scrubbing mechanism is that pretreatment unit filtering accuracy is micro-filtration.
Beneficial effects of the present invention are as follows：
Film group device of the present invention and water purifier, mainly for household reverse osmosis water purifier and Industrial reverse osmosis water processThe technological gap of presence, there is provided one kind can prevent fouling membrane, and the film group device of energy mechanical removal and chemical scavenging fouling membrane, makeWater purifier Water Sproading rate is high, simple system, specifically has the beneficial effect that：
（1）Membrane component service life was up to more than 5 years, higher than existing family expenses wound membrane element service life 3 to 4 years.OneAspect, film group device of the invention is provided with reciprocating scouring part, pre-processes as micro-filtration is filtered, in the main removal aqueous solutionLarger-size suspension, be deposited on the solid pollutant on film surface and removed by cleaning, meanwhile, be provided with check valve, formedBig flow is intake, and makes friction cleaning and hydrodynamic cleaning while carrying out, and is more beneficial for the removal of pollutant, be slow down membrane component water and is led toThe decay of amount；Secondly, by the activated carbon cleaned on part using load bactericide in film group device, free chlorine is removed and is gone outThe process procedures such as bacterium are processed around film surface, are more beneficial for protecting membrane component and are prevented the biological pollution of film；3rd, film groupDevice is provided with cleaning agent hand-hole using open runner on film group device, with reference to moving back and forth for scrubbing mechanism, makes Chemical cleaning sideJust, easily.
（2）The running water rate of recovery is high, hardly discharges concentrated running water.On the one hand, film group device of the invention is mainUsing dead-end filtration, by the cocnentration factor for improving running water（In most cases, can reach 5 times of cocnentration factor）Prepare pure water,Under conditions of equal number pure water is prepared, the demand of running water is greatly reduced；Secondly, produced in pure water preparation processRaw concentrated aqueous solution is temporarily stored in the housing of film group device, and film group device serves water reservation, then by setting valve and automatically controlledSystem, directly connects with domestic water tap, and when domestic water is fetched water, the concentration running water stored in film group device is directly sharpWith, do not make discharge of wastewater, save substantial amounts of water resource.Such as based on the existing household reverse osmosis water purifier recoverable amount of China 10,000,000Calculate, every water purifier average year aquifer yield is 1.5 tons, 1 ton of pure-water discharging, 3 tons of condensed waters is produced, such as using of the inventionFilm group device and water purifier, can save 45,000,000 tons of the aqueous solution every year.
（3）Simplify water purifier structure.On the one hand, pretreatment system is simplified, the pretreatment of water purifier is reduced to micro-filtration,Compared with existing " PP cottons+granular activated carbon+extruded activated carbon " three-level system, two grades are reduced；Secondly as using the present inventionFilm group device, simplify concentration running water recovery or circulatory system element and pipeline.
Brief description of the drawings
Fig. 1 is a kind of film group device structural representation with scrubbing mechanism of the invention；
Fig. 2 is the Section A-A figure of Fig. 1 of the invention；
Fig. 3 is film group device structural representation of the another kind with scrubbing mechanism of the invention；
Fig. 4 is the section B-B schematic diagram of Fig. 3；
Fig. 5 is the C-C schematic cross-sections of Fig. 3；
Fig. 6 is a kind of water purifier structure schematic diagram of film group device of use with scrubbing mechanism of the invention；
Fig. 7 is a kind of control flow chart of water purifier valve 54 of film group device of use with scrubbing mechanism of the invention.
Wherein, each label is represented as in figure：1- housings；2- membrane components；3- connectors；4- cleans part；5- water inlets；6-Delivery port；7- cleaning agent hand-holes；8- boss；9- lug bosses；21- pure water outlets；41- pistons；42- piston rods；43- bulletsSpring；44- fins；45- wiping brushs；411- flow channel for liquids；51- pretreatment units；52- water pumps；Film groups of the 53- with scrubbing mechanismDevice；54- valves；55- electric-control systems；56- purified water collecting units；57- check valves；58- pressure sensors；59- flow sensingsDevice；60- conductances are popped one's head in；61- domestic water valves.
Specific embodiment
In the following detailed description, the film group device of dead-end filtration answering in counter-infiltration household water-purifying machine is focused onWith details provided herein, advantage and other explanations will also apply to the water in a kind of this film group device for illustrating and not being related toProcessing unit or other fluid filtering devices.
The present invention is described in more detail below in conjunction with drawings and Examples.
As shown in Figures 1 to 5, the film group device with scrubbing mechanism of the present invention includes housing 1, membrane component 2, connector3 are arranged on the inner chamber of housing 1 with scouring part 4, the filtration fraction of membrane component 2, and non-filtered part is connected with connector 3, connectionBody 3 is connected with housing 1, and the wiping brush 45 of scouring part 4 separates layer surface and contacts with membrane component 2, in the aqueous solution or outside dynamicUnder the driving of power, scouring part 4 is reciprocating, and the separation layer surface to membrane component 2 carries out friction cleaning；Housing 1 is provided withWater inlet 5, delivery port 6 and cleaning agent hand-hole 7, membrane component 2 are provided with pure water outlet 21, under the dynamic action of the aqueous solutionPure water is prepared, the pure water of preparation is drawn from pure water outlet 21.
As shown in fig. 6, water purifier of the present invention includes pretreatment unit 51, water pump 52, the film group with scrubbing mechanismDevice 53, valve 54, electric-control system 55, purified water collecting unit 56, check valve 57, pressure sensor 58, flow sensor 59, leadElectric rate probe 60 and domestic water valve 61.Running water preprocessed unit 51 preliminary purification, then by the film with scrubbing mechanismThe group deep purifying of device 53, the pure water for obtaining is stored in the storage container of purified water collecting unit 56 or directly led out；Band is wipedConcentrated running water TDS concentration is when the conditions such as discharge of wastewater setting value are met in the film group device 53 of washing machine structure, electric-control system55 control valves 54 are opened, and the high concentration running water stored in film group device 53 is made into discharge of wastewater；When domestic water is fetched water, bandThe concentrated or not concentrated running water stored in the film group device 53 of scrubbing mechanism is used as domestic water, in domestic waterDuring water intaking, the scouring part 4 in the film group device 53 with scrubbing mechanism is back and forth cleaned and hydrodynamic cleaning to membrane component 21.
Pure water of the present invention refers to that total dissolved solid (TDS) concentration is less than the aqueous solution of 500ppm.
Domestic water of the present invention refers to that concentrated or not concentrated total dissolved solid (TDS) concentration is less thanOr the aqueous solution equal to 1000ppm.
Waste water of the present invention refers to that concentrated total dissolved solid (TDS) concentration is water-soluble more than 1000ppmLiquid.
Reciprocating friction is cleaned
Friction cleaning of the present invention（Herein referred to as " scouring "）Refer to clean part 4 to move, membrane component 2 is static, wipesThe wiping brush 45 for washing part 4 rubs to the separation layer surface of membrane component 2, will be deposited on membrane component 2 and separates in layer surfaceSolid deposits are scraped in the aqueous solution.
Reciprocating scouring of the present invention is to be one with 2 times to clean circulation, cleans for the first time and cleaned for the second timeThe movement locus that part 4 is cleaned in journey is identical, and the direction of motion is opposite.
The motion for cleaning part 4 of the present invention includes linear motion and rotary motion.
The direction of motion of the present invention is included along the side parallel with the contact surface or tangent plane that membrane component 2 separates layer surfaceTo reciprocating motion.Usually, to be vertically arranged, the direction of motion for cleaning part 4 is generally the separation layer surface of board-like membrane component 2Vertically direction or back and forth or left and right horizontal direction move along a straight line, tubular type membrane component 2 be then along axially in parallel direction it is straightLine is moved or tangential direction is rotated.
During reciprocating scouring of the present invention, the flowing side for cleaning the reciprocating aqueous solution of part 4 is acted onTo including unidirectional drive and bi-directional drive, the aqueous solution flow direction of bi-directional drive is opposite.
The reciprocating power for cleaning power source including the aqueous solution of the present invention and gravity, the gravity for cleaning part 4 withBuoyancy；The power transmitted by piston rod 42 if piston rod 42 is installed additional on piston, during reciprocal scouring, acts on wipingThe driving force for washing part 4 includes one or more foregoing power source.
During reciprocating scouring of the present invention, spring 43 be accumulation of energy part, spring 43 by the kinetic energy of the aqueous solution withPotential energy, the kinetic energy and potential energy of cleaning part 4, the mechanical energy of the transmission of piston rod 42 etc. are converted into the potential energy of spring 43, direct driveOr participate in driving scouring part 4 to be cleaned.
Rinse
Flushing of the present invention refers to be cleaned to foregoing second after the completion of foregoing first time scouring before startingIn certain hour, rinse water solution flows into housing 1 from water inlet 5, and a portion aqueous solution flows through flow channel for liquids 411, thenFlow through and clean the runner that part 4 is formed with membrane component 2, then flowed out from delivery port 6, waterpower is carried out to cleaning part 4 and membrane component 2The process of flushing.
Rinse water solution of the present invention refers to not concentrated domestic water, waste water, the warp of concentrated rear dischargeConcentration or the mixing liquid of not concentrated running water.
The power resources of rinse water solution of the present invention are the aqueous solution for flowing into water inlet 5, and the aqueous solution both may be usedInjected with from water pump 52, it is also possible to introduced by check valve 57, preferably introduced through check valve 57.
From after the outflow of delivery port 6, the pipeline of output has single-pipeline and dual circuit two to rinse water solution of the present inventionThe mode of kind, it is therefore preferable to which single-pipeline, i.e. domestic water output pipe and discharge of wastewater pipeline are same pipeline, dual circuit refers to lifeIt is different pipelines to be exported from discharge of wastewater with water, i.e., domestic water output bypass is set on discharge of wastewater pipeline.
Pure water preparation process
Pure water of the present invention prepare include dead-end filtration, cross-flow filtration, dead-end filtration replace with cross-flow filtration intoThree kinds of modes of row.
In the case of dead-end filtration, prepared by the foregoing pure water of the present invention refers to extremely preceding after the completion of foregoing second is cleanedThe next scouring circulation stated start before certain hour in carry out；The aqueous solution that membrane component 2 separates layer surface passes through filmSeparating layer, into the non-separating layer of membrane component 2, pure water is drawn from pure water inlet 21.
In the case of cross-flow filtration, the foregoing pure water of the present invention prepare from unlike foregoing dead-end filtration, precedingIn the pure water preparation process stated, the concentrated aqueous solution accomplished continuously or intermittently flows out from delivery port 6.
Housing
Housing of the present invention 1 refers to bear to be more than the inner wall smooth of 0.1Mpa or with step, convex-concave or grooveThe pressure vessel of hollow prism body and hollow circular cylinder.
Include and be not limited to water inlet 5, the and of delivery port 6 with one and the above on the wall of housing of the present invention 1Cleaning agent inlet 7.
Boss 8 and flow channel for liquids 411 on the inwall of housing 1 are the check valve for cooperating, the aqueous solution in guide housing 1From through flow channel for liquids 411, passing through membrane component 2 near the one end of water inlet 5 and cleaning the runner that part 4 is formed, delivery port is flowed to6；When the lug boss 9 of housing 1 is contacted with the piston 41 for cleaning part 4, boss 8 and flow channel for liquids 411 on the inwall of housing 1 take offFrom being divided into two-part housing 1 by piston 41 and connected by flow channel for liquids 411.
The foregoing boss 8 of the present invention and flow channel for liquids 411 are to coordinate in pairs, and usually, the aqueous solution flows from water inlet 5Enter, flowed out from delivery port 6, boss 8 is arranged on the top of housing 1.
Membrane component
Membrane component 2 in film group device of the present invention refers to：By the porous flake membrane material with separating layer and non-separating layerExpect the UF membrane element for encapsulating supporter, membrane component 2 has pure water outlet 21, usually, in one end of membrane component 2It is provided with pure water outlet 21.
Preferably, the shape of membrane component of the invention 2 includes the cylinder body shape such as tabular, tubulose, porous flake membrane material warpFold or it is not folded be arranged in band groove or supporter not with groove on.
In some instances, membrane component of the invention 2 be containing one or more independent membrane component 2, or byThe combination of one or more membrane component 2 post package is formed, it is preferable that the one or more independent envelope of membrane component 2On a connector 3.
Porous flake membrane material
The foregoing porous flake membrane material of the present invention includes organic film material and inorganic material film.
Generally, such as organic film material is applied to micro-filtration, ultrafiltration and nano-filtration membrane, advantageously chooses polyolefin, poly- secondAlkene（PE）, polypropylene（PP）, polyamide（PA）, polytetrafluoroethylene (PTFE)（PTFE）, Kynoar（PVDF）, polysulfones（PS）And polyethersSulfone（PES）.
Generally, inorganic material film is applied to micro-filtration and ultrafiltration, advantageously chooses ceramic composite（Such as ceramic membrane）SystemInto.
The exemplary of microfiltration membranes has the aperture within the scope of about 0.1 micron to about 10 microns.
Ultrafiltration preferably has the aperture in 0.002 micron to about 0.1 micrometer range.
The film of nanofiltration is typically used for the aperture in about 0.0001 micron to about 0.01 micrometer range.
Clean part
The foregoing scouring part 4 of the present invention is monolithic construction or fabricated structure form, it is preferable that be monoblock type knotStructure.
The foregoing fabricated structure of the present invention cleans part 4, will clean part 4 and is made more than one discrete unitPart, piston 41 and piston rod 42, spring 43, fin 44 and wiping brush 45 are such as optimized be combined into more than one zeroPart.
In some instances, wiping brush 45 is continuously or discontinuously arranged on fin 44.
The foregoing scouring part 4 of the present invention is selected from porous material, or is composited by porous material and non-porous materials, exampleSuch as PP expanded materials, foaming activity charcoal, NACF, PP expanded materials and activated carbon fibrous composite, these porous materialsMaterial is preferably activated carbon.
The activated carbon of the foregoing load bactericide of the present invention, it is therefore preferable to active carbon loading silver.
The foregoing wiping brush 45 of the present invention is made up of soft material, it is therefore preferable to which sponge or staple fibre or macromolecule are compoundMaterial.
Preferably, the material that fin of the invention 44 is selected is NACF.
The foregoing wiping brush 45 of the present invention is consistent with the contact surface shape of the separating layer contact site of membrane component 2.
Embodiment 1
As depicted in figs. 1 and 2, film group device of the present invention mainly includes 1, membrane component 2 of housing, the and of connector 3Clean part 4；The lower end of membrane component 2 is packaged into an entirety with connector 3, and part 4 is cleaned in the outer socket of membrane component 2, utilizesHousing 1 encapsulates the upper end of membrane component 2 and scouring part 4, and 5, delivery port 6 of a water inlet is provided with housing 1, pureThe bottom that water out 21 is located at membrane component 2 is overhang from connector 3, and the aqueous solution is flowed into from water inlet 5, is flowed out from delivery port 6, pureWater purification flows out from pure water outlet 21.
The volume of housing 1 is 6 liters in the present embodiment, and the interior top of housing 1 is provided with a boss 8, is opened on part 4 is cleanedIt is provided with matched flow channel for liquids 411.
In the present embodiment the length × width × height of membrane component 2 be respectively 300mm, 200mm and 3mm polyamide reverse osmosis it is board-likeMembrane component 2, board-like membrane component 2 is provided with a pure water outlet 21, and effective membrane area is 0.2 square metre；One of membrane component 2Free end is located in housing 1, and pure water outlet 21 is stretched out beyond connector 3；It is an integrated part to clean part 4, whereinOne face of cylinder coordinates with the gap of housing 1, constitutes a hydraulic cylinder, and its end face has a flow channel for liquids 411, flow channel for liquids411 coordinate with the gap of boss 8, constitute a hydraulic selector.
The course of work of the invention is as follows：
Water inlet 5 is normally opened, opens delivery port 6, and the aqueous solution flows into from water inlet 5, flowed into from water inlet 5, clean part 4 toLower movement separates poised state until flow channel for liquids 411 is in boss 8, and scouring part 4 completes the separating layer table to membrane component 2The first time in face cleans process.
Delivery port 6 is closed, under the buoyancy for cleaning part 4, part 4 is cleaned and is moved upward to initial position, completedLayer surface is separated to membrane component 2 to clean for second.During being cleaned second, flow channel for liquids 411 and boss 8 from openingIt is changed into closure state, the aqueous solution near the one end of water inlet 5 is by cleaning gap of the part 4 with membrane component 2, scouring part 4The one end of delivery port 6 is close to the gap of housing 1 and the gap flow direction between flow channel for liquids 411 and boss 8.
When cleaning completion second, the reclaimed water solution water pressure of housing 1 starts to water close to or up water feeding pressure, membrane component 2Solution is filtered, and prepares pure water, and the water time processed is 60min.
Result shows that pure water yield is 3 liters, and the soluble ion concentration in pure water is 35ppm, pure water yieldAdd up to be 4 tons, the service life of membrane component 2 is 4 years.
Embodiment 2
As shown in Figures 3 to 5, film group device of the another kind with scrubbing mechanism of the present invention mainly includes housing 1, threeBoard-like membrane component 2, connector 3, piston 41, piston rod 42, spring 43, fin 44 and wiping brush 45, membrane component 2 is verticallyIt is arranged in housing 1, housing 1 is connected to membrane component 2 turns into an entirety on connector 3, piston rod 42 is arranged on housing 1Top, the socket coaxial with piston rod 42 of spring 43 is installed；Have a delivery port 6, of water inlet 5, net on film group deviceWater out 21 and a cleaning agent inlet 7.
Housing 1 is the hollow columnar thin-walled pressure vessel of one end closing, and volume is 6 liters；Have in the side inner walls of housing 1The rectilinear projection portion 9 that one boss 8 and two are extends in the vertical direction；Lug boss 9 also plays spacing work to the operation of piston 41With, and the water flowed into from flow channel for liquids 411 can be made to be flowed between fin 44 and membrane component 2, realize hydrodynamic cleaning, membrane component 2It is the board-like membrane component 2 of polyamide reverse osmosis of 300mm × 200mm × 3mm, there is a pure water inlet on every board-like membrane component 221, effective membrane area amounts to 0.6 square metre；Three membrane components of identical filtering accuracy 2 set by identical spacing distance is parallelPut, an entirety is packaged into connector 3, a free end of membrane component 2 is located in housing 1, and pure water outlet 21 stretches out companyBeyond junctor 3.
Clean part 4 to be combined by piston 41, piston rod 42, spring 43, fin 44 and wiping brush 45, piston 41 and shellThe gap of body 1 coordinates one hydraulic cylinder of composition, has a flow channel for liquids 411 on piston 41, and flow channel for liquids 411 coordinates with boss 8Constitute a hydraulic selector.
The course of work of the invention is as follows：
Water inlet 5 is normally opened, opens delivery port 6, and the aqueous solution flows out from delivery port 6 in housing 1, and the aqueous solution flows from water inlet 5Enter, moved down through piston 41, piston rod 42, fin 44 and wiping brush 45, balance is separated until flow channel for liquids 411 is in boss 8State, is completed to clean the separation layer surface of membrane component 2 for the first time, and during this, spring 43 is compressed；Delivery port 6 is closed,Compression spring 43 elastic force effect under, and the buoyancy of piston 41, piston rod 42, fin 44 and wiping brush 45 collective effectUnder, piston 41, piston rod 42, fin 44 and wiping brush 45 are moved upward to initial position, complete the separating layer to membrane component 2Clean for second on surface.Some special circumstances（After such as injecting cleaning agent from injection cleaning agent inlet 7）Can also Manual pressPulling piston rod 42 carries out active cleaning.
When cleaning completion second, the reclaimed water solution water pressure of housing 1 starts to water close to or up water feeding pressure, membrane component 2Solution is filtered, and prepares pure water, and the water time processed is 20min.
Result shows that pure water yield is 3 liters, and the soluble ion concentration in pure water is 35ppm, pure water yieldAdd up to be 5 tons, the service life of membrane component 2 is 5 years.
Embodiment 3
As shown in fig. 6, water purifier of the present invention includes pretreatment unit 51, water pump 52, the film group with scrubbing mechanismDevice 53, valve 54, electric-control system 55, purified water collecting unit 56, check valve 57, pressure sensor 58, flow sensor 59, leadElectric rate probe 60 and domestic water valve 61；The water inlet of pretreatment unit 51 and running water is connected, pretreatment unit 51, water pump 52,Film group device 53, valve 54 with scrubbing mechanism are sequentially connected in series, purified water collecting unit 56 and the film group device with scrubbing mechanism53 pure water outlet connection, the check valve 57 in parallel of water pump 52, divides between film group device 53 and valve 54 with scrubbing mechanismPressure sensor 58 and conductance probe 60 are not provided with, flow sensor 59 is arranged on the downstream of valve 54, in conductance probeA bypass with domestic water valve 61 is provided between 60 and valve 54, for exporting domestic water；Running water is through pre- placeThe reason preliminary purification of unit 51, then by the deep purifying of film group device 53 with scrubbing mechanism, the pure water for obtaining is stored in pure waterIn the storage container of collector unit 56 or directly lead out；Running water TDS concentration concentrated in film group device 53 with scrubbing mechanismWhen the conditions such as discharge of wastewater setting value are met, the control valve 54 of electric-control system 55 is opened, by the film group device 53 with scrubbing mechanismThe high concentration running water of middle storage makees discharge of wastewater；When domestic water is fetched water, stored in the film group device 53 with scrubbing mechanismConcentrated or not concentrated running water is used as domestic water, when domestic water is fetched water, the film group device with scrubbing mechanismScouring part 4 in 53 is back and forth cleaned and hydrodynamic cleaning to membrane component 21.
The work of water purifier of the present invention critical piece in pure water preparation, domestic water conveying and under discharge of wastewater state1 is shown in Table as state：
The working condition table of the critical piece of table 1
" Y " in upper table refers to that the flow channel for liquids of water pump, check valve 57 and valve 54 is in opening state.
" N " in upper table refers to that the flow channel for liquids of water pump, check valve 57 and valve 54 is closed.
" single-pipeline " in upper table refers to that domestic water is conveyed and discharge of wastewater is completely total pipeline.
" dual circuit " in upper table refers to domestic water conveying and discharge of wastewater is not exclusively total pipeline.
As shown in fig. 7, valve of the present invention 54 is used to control domestic water to convey and discharge of wastewater, it is generally located onOn discharge of wastewater pipeline, when domestic water conveying and discharge of wastewater are completely total pipeline, control mode includes that life is usedPenstock 61 is controlled and electric-control system 55 is controlled, and domestic water valve 61 is turned on and off, and valve 54 is controlled in company with being turned on and offThe rate-determining steps of system 55 are as follows：
The first step, the signal from pressure sensor 59 judges whether to meet unlocking condition, when fluid pressure is less than or waitsWhen P0, valve 54 is closed, and when fluid pressure is more than P0, judges into next step.
Second step, the signal from conductance probe 62 further determines whether to meet unlocking condition, when TDS concentration is less thanOr during equal to S0, valve 54 is closed, when fluid pressure is more than S0, valve 54 is opened.
3rd step, judges discharge of wastewater flow, judges whether to meet closedown condition from the signal of flow sensor 61, works as streamWhen amount L is more than L0, valve 54 is closed, otherwise, in opening.
Usually, above-mentioned P0 values are more than 0.01Mpa, it is preferable that be 0.02Mpa；S0 is more than 1000ppm, it is preferable that be2000ppm, L0 are more than 1 times of the liquid net capacity of film group device 53, it is therefore preferable to 1.5 times.
Result shows, it is of the present invention enter the liquid capacity 2000ml of film group device 53 that uses of water dispenser, effective membrane area 0.6Square metre, reverse osmosis membrane salt rejection rate is 98%, enters aqueous solution TDS for 400ppm, and water feeding pressure 0.5Mpa, waste water EDS are2000ppm, prepares 8000ml pure water, and the used time about 60min, pure water TDS is about 28ppm.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this areaFor art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repairChange, equivalent, improvement etc., should be included within the scope of the present invention.