CN207760137U - Water purifier - Google Patents

Abstract

The utility model provides a kind of water purifier, includes at least：Reverse osmosis membrane apparatus (30), wherein the water inlet of the reverse osmosis membrane apparatus (30) is equipped with entering water electromagnetic valve (21), wherein：Further include：Combined filtering device (50), at least two the first filter elements (51) mutually separated and the second filter element (52) are equipped in the combined filtering device (50), and the first water inlet (A1) being connected to first filter element (51) and the first water outlet (B1) are opened up on the combined filtering device (50), and the second water inlet (A1) and the second water outlet (B2) being connected to second filter element (52), water purifier provided by the utility model solve existing water purifier when drainage series increases volume increase and drainage series reduce when RO film reduced service life the technical issues of.

Description

Water purifier

Technical field

The utility model is related to field of household appliances, more particularly to a kind of water purifier.

Background technology

Reverse osmosis is a kind of pressure using higher than osmotic pressure as motive force, can only cannot through water using selective membrane Through the selective penetrated property of solute, by the process of hydrone and solute phase separation from water body, reverse osmosis water purifier is main profit The machine of water process is carried out with principle of reverse osmosis, operation principle is to apply certain pressure to water, makes hydrone and ionic state Mineral matter element is by reverse osmosis membrane, and the most inorganic salts (including heavy metal) being dissolved in water, organic matter and thin Bacterium, virus etc. can not penetrate reverse osmosis membrane, and the condensed water to make the pure water penetrated and can not penetrate is stringent to be separated.

Currently, patent (CN205076905U) discloses a kind of high recycling reverse osmosis water purification units, specific open (participation figure 1)：Including water inlet pipe 1 and outlet pipe 3, piping connection has filter core group, booster pump 5, reverse osmosis successively between water inlet pipe 1 and outlet pipe 3 Thoroughly (Reverse Osmosis, referred to as：RO) film 6 further include waste pipe 4, the water inlet end of waste pipe 4 and a nozzle of threeway 11 Connection, other two nozzle of threeway 11 are connect with the water outlet pipeline of the water inlet of booster pump 5 and reverse osmosis membrane 6 respectively, are given up Combination scouring electromagnetic valve 10 is installed on water pipe 4, concentrate recirculation valve is installed on the pipeline between threeway 11 and booster pump 5, In, filter core group includes：PP cotton filter element 21, granular activated carbon filter core 22, extruded activated carbon filter core 23, PP cotton filter element 21 are lived with particle It is connected with low tension switch 9 on pipeline between property filtration core 22, high pressure is installed on the pipeline between reverse osmosis membrane 6 and outlet pipe 3 Switch 8, is equipped with entering water electromagnetic valve 7 on the pipeline between booster pump 5 and filter core group, and when work is specially：Be powered machine for the first time It rinses 18 seconds, machine starts normally water processed；Every 15 to 20 minutes of water time processed rinses 2.5 seconds, quickly by 6 surface of reverse osmosis membrane and Crystalline solid in multifunctional electromagnetic valves 10 is rinsed, and playing prevents 10 fouling of 6 surface of reverse osmosis membrane and multifunctional electromagnetic valves.

However, in above-mentioned purifier, when filter element filtering series is excessive, machine space necessarily increases, and causes purifier It is sufficiently bulky, if filtering series reduces, and complete machine RO membrane lifetimes can be influenced.

Utility model content

Purifier volume when filter element filtering series is more in purifier for being related to of solving to mention in background technology Become larger and RO membrane lifetimes reduce when filtration grade is less at least one problem, the utility model provide a kind of filtering series increase And the water purifier that volume does not increase and RO membrane lifetimes increase, while simplifying pipeline.

The utility model provides a kind of water purifier, includes at least：Reverse osmosis membrane apparatus, wherein the reverse osmosis membrane apparatus Water inlet go out equipped with entering water electromagnetic valve, wherein：Further include：

Combined filtering device is equipped at least two the first filter elements mutually separated and the in the combined filtering device Two filter elements, and open up the first water inlet being connected to first filter element and first in the combined filtering device and go out The mouth of a river, and the second water inlet and the second water outlet that are connected to second filter element；

Wherein, first water inlet is connected with the pure water outlet of the reverse osmosis membrane apparatus, first water outlet Mouth is connected with pure water water receiving end；

Second water inlet is connected with the concentrated water water outlet of the reverse osmosis membrane apparatus, second water outlet and institute The water inlet for stating reverse osmosis membrane apparatus is connected.

By including combined filtering device, and at least two the first mistakes mutually separated are equipped in the combined filtering device Unit and the second filter element are filtered, and opens up the first water inlet being connected to first filter element in the combined filtering device Mouthful and the first water outlet, and the second water inlet and the second water outlet that are connected to second filter element, described first into The mouth of a river is connected with the pure water outlet of the reverse osmosis membrane apparatus, and first water outlet is connected with pure water water receiving end；Institute It states the second water inlet with the concentrated water water outlet of the reverse osmosis membrane apparatus to be connected, second water outlet and the reverse osmosis membrane The water inlet of device is connected, and when such drainage, the drainage set-up mode that combined filtering device goes with each other all the time is realized in difference Switching is shunted between water route, and mutually non-interference between water route, it can be simultaneously to reverse osmosis membrane apparatus pure water and concentrated water two path water Filtering increase drainage series in this way, and due to need to only set to realize the filter cartridge construction that multistage filtering is integrated A combined filtering device is set, so the volume of water purifier will not increase, while simplifying pipeline, and since reverse osmosis membrane fills Reverse osmosis membrane apparatus is flowed back into after the second filter element filtering that the concentrated water for setting the discharge of concentrated water water outlet passes through combined filtering device, Concentrated water is reduced by the filtration impurity of the second filter element in this way, effectively stops the incrustation scale in waste water, such reverse osmosis membrane It is not easy to damage reverse osmosis membrane apparatus when device is filtered it, so that the service life of reverse osmosis membrane apparatus Extend, therefore, the present embodiment provides water purifiers to solve existing water purifier volume increase and drainage when drainage series increases When series is reduced the technical issues of RO film reduced service life.

Optionally, further include：Pressure pot, the pure water outlet of the pressure pot and the reverse osmosis membrane apparatus and described First water inlet of combined filtering device is connected.

Optionally, first filter element is composite filter element, and the composite filter element includes at least ultra-filtration element and activity Filtration core, or

First filter element is single filter core.

Optionally, second filter element is scale inhibition filter core.

Optionally, it is connected by return duct between second water outlet and the water inlet of the reverse osmosis membrane apparatus, And the return duct is equipped with multifunctional electromagnetic valves and check valve.

Optionally, the return duct is equipped with the waste pipe being connected to the return duct, and the waste pipe is equipped with and gives up Water valve.

Optionally, the pipeline between first water inlet and the pure water outlet of the reverse osmosis membrane apparatus is equipped with height It compresses switch and non-return valve.

Optionally, further include：Pre-filtering device, the water outlet of the pre-filtering device and the reverse osmosis membrane apparatus Water inlet be connected；

The water outlet of the pre-filtering device is connected by pure water pipe with water purification water receiving end.

Optionally, the pre-filtering device is composite filter element, and the composite filter element includes at least PP cotton filter element and activity Carbon filter core.

Optionally, the water inlet of the pre-filtering device is connected with water inlet pipe, and the water inlet pipe is equipped with water inlet Ball valve；

Supercharging device is equipped between the pre-filtering device and the reverse osmosis membrane apparatus, and second water outlet is logical The return duct is crossed with the water inlet of the supercharging device to be connected.

The construction of the utility model and its other goals of the invention and advantageous effect will be in conjunction with the accompanying drawings to excellent Select the description of embodiment and more obvious and easy to understand.

Description of the drawings

Fig. 1 is the structural schematic diagram of existing water purifier；

Fig. 2 is the structural schematic diagram of water purifier provided by the utility model；

Fig. 3 is the schematic diagram that combined filtering device goes with each other all the time in water purifier provided by the utility model；

Fig. 4 is the another schematic diagram that combined filtering device goes with each other all the time in water purifier provided by the utility model；

Fig. 5 is another schematic diagram that combined filtering device goes with each other all the time in water purifier provided by the utility model；

Fig. 6 is the another structural schematic diagram of water purifier provided by the utility model.

Reference sign：

Water inlet pipe -10；

Water intake ball valve -11；

Pre-filtering device -20；

Entering water electromagnetic valve -21；

Supercharging device -22；

Pure water pipe -23；

Water purification water receiving end -24；

Reverse osmosis membrane apparatus -30；

Water inlet-C1；

Concentrated water water outlet-C2；

Pure water outlet-C3；

Non-return valve -31；

High-voltage switch gear -32；

Pipeline -40；

Pressure pot -41；

Combined filtering device -50；

First filter element -51；

Second filter element -52；

First water inlet-A1；

First water outlet-B1；

Second water inlet-A2；

Second water outlet-B2；

Return duct -60；

Multifunctional electromagnetic valves -61；

Check valve -62；

Wastewater valve -63；

Waste pipe -64；

Pure water pipe -70；

Pure water water receiving end -71.

Specific implementation mode

It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, the every other embodiment that those of ordinary skill in the art are obtained without creative efforts belong to The range of the utility model protection.

Embodiment one

Fig. 2 is the structural schematic diagram of water purifier provided by the utility model, and Fig. 3 is in water purifier provided by the utility model The schematic diagram that combined filtering device goes with each other all the time；Fig. 4 is that combined filtering device is double into double in water purifier provided by the utility model The another schematic diagram gone out；Fig. 5 is another schematic diagram that combined filtering device goes with each other all the time in water purifier provided by the utility model.

Wherein, water purifier provided in this embodiment realize filter series increase when purifier volume do not increase and The purpose that RO film service lifes increase.

Wherein, in the present embodiment, as shown in Fig. 2, water purifier includes at least：Reverse osmosis membrane apparatus 30, at the same time it can also wrap Include pre-filtering device 20, wherein the pipeline that pre-filtering device 20 is connected with reverse osmosis membrane apparatus 30 is equipped with supercharging device 22 and entering water electromagnetic valve 21, specifically, the water inlet of pre-filtering device 20 is connected with running water pipe, pre-filtering device 20 Water outlet be connected with the water inlet of entering water electromagnetic valve 21, the water outlet of entering water electromagnetic valve 21 and the water inlet phase of supercharging device 22 Connection, the water outlet of supercharging device 22 are connected with the water inlet C1 of reverse osmosis membrane apparatus 30, and reverse osmosis membrane apparatus 30 has two A water outlet, respectively pure water outlet C3 and concentrated water water outlet C2, specifically, pure water outlet C3 is reverse osmosis for will transmit through The water discharge (i.e. purified water flows out) of film, concentrated water water outlet C2 are used to the water (i.e. concentrated water) for not penetrating reverse osmosis membrane being discharged.

Wherein, in the present embodiment, for the pure water that 30 pure water outlet C3 of reverse osmosis membrane apparatus is discharged and to reverse osmosis The concentrated water of 30 concentrated water water outlet C2 discharges of permeable membrane device is filtered, specifically, further including：Combined filtering device 50, was combined It filters and is equipped at least two the first filter elements 51 and the second filter element 52 mutually separated, i.e. combined filtering device in device 50 50 are made of at least two independent filter elements, and filter element one of in this way can go out 30 pure water of reverse osmosis membrane apparatus The pure water of mouth of a river C3 discharges is filtered, meanwhile, another filter element is to 30 concentrated water water outlet C2 discharges of reverse osmosis membrane apparatus Concentrated water be filtered, to achieve the purpose that one filter device of setting is simultaneously filtered two path water, wherein this implementation In example, as shown in Fig. 2, specifically, combined filtering device 50 includes two filter elements, respectively the first filter element 51 and the Two filter elements 52, and the first filter element 51 and the second filter element 52 are spaced apart from each other, the first filter element 51 and second Filter element 52 is not connected to, and is filtered respectively to two path water.

Wherein, specifically, opened up in combined filtering device 50 the first water inlet A 1 being connected to the first filter element 51 and First water outlet B 1, and the second water inlet A 2 and the second water outlet B 2 that are connected to the second filter element 52, as shown in Fig. 2, Connection relation between combined filtering device 50 and reverse osmosis membrane apparatus 30 is specially：First water inlet A 1 and reverse osmosis membrane apparatus 30 pure water outlet C3 is connected, and the first water outlet B 1 is connected with pure water water receiving end 71, i.e. 30 pure water of reverse osmosis membrane apparatus During the pure water of water outlet C3 discharge is entered by the first water inlet A 1 between first filter element 51 of combined filtering device 50 It is filtered, filtered pure water is discharged to pure water water receiving end 71 by the first water outlet B 1, and such user is from pure water water receiving end 71 can obtain pure water；Second water inlet A 2 is connected with the concentrated water water outlet C2 of reverse osmosis membrane apparatus 30, the second water outlet B 2 It is connected with the water inlet of supercharging device 22, i.e. the concentrated water of 30 concentrated water water outlet C2 discharges of reverse osmosis membrane apparatus passes through the second water inlet It is filtered in entering between the second filter element 52 of combined filtering device 50, filtered concentrated water passes through the second water outlet B2 is re-entered into reverse osmosis membrane apparatus 30, i.e., combined filtering device 50 both can be to 30 pure water outlet of reverse osmosis membrane apparatus The pure water of C3 discharges is filtered, while can also be carried out to the concentrated water of 30 concentrated water water outlet C2 discharges of reverse osmosis membrane apparatus Filter, that is, a combined filtering device 50, which is arranged, realizes the filtering to reverse osmosis membrane apparatus 30 pure water and concentrated water two path water, to So that the drainage series of water purifier increases.

Therefore, the drainage pattern to be gone with each other all the time by combined filtering device 50 realizes the shunting between different water routes and turns It connects, and mutually non-interference between water route, to realize the filter cartridge construction that multistage filtering is integrated, increases drainage grade in this way Number, and since a combined filtering device 50 need to only be arranged, so the volume of water purifier will not increase, simultaneously as reverse osmosis It flows back after the second filter element 52 filtering that the concentrated water of 30 concentrated water water outlet C2 discharges of permeable membrane device passes through combined filtering device 50 To reverse osmosis membrane apparatus 30, such concentrated water reduces by the filtration impurity of the second filter element 52, effectively stops in waste water Incrustation scale, such reverse osmosis membrane apparatus 30 is not easy to damage reverse osmosis membrane apparatus 30 when being filtered it, to make The service life for obtaining reverse osmosis membrane apparatus 30 extends, and therefore, water purifier provided in this embodiment passes through and combined filtering device is arranged 50, when such drainage, it can go with each other all the time, and non-interference between water route, to realize the purpose of multistage filtering.

Wherein, in the present embodiment, it should be noted that combined filtering device 50 be an integral filter core, be by two level with On filter element filtering layer composition, the first filter element 51 and the second filter element 52 are on same filter flask, wherein the first filtering is single It may be left and right flow dividing structure (as in Figure 3-5) that member 51 and the second filter element 52, which can be upper and lower flow dividing structure, simultaneously Go out into three or four into the four drainage membrane types that go out it should be noted that combined filtering device 50 may be arranged as three, that is, combined It includes mutual indepedent three or four filter elements to filter device 50.

Water purifier provided in this embodiment by including combined filtering device 50, and is equipped with extremely in combined filtering device 50 Few two the first filter elements 51 and the second filter element 52 mutually separated, and opened up in combined filtering device 50 and the first mistake The first water inlet A 1 and the first water outlet B 1 that unit 51 is connected to are filtered, and the second water inlet being connected to the second filter element 52 A2 and the second water outlet B 2, the first water inlet A 1 are connected with the pure water outlet C3 of reverse osmosis membrane apparatus 30, the first water outlet B1 is connected with pure water water receiving end 71；Second water inlet A 2 is connected with the concentrated water water outlet C2 of reverse osmosis membrane apparatus 30, and second Water outlet B 2 is connected with the water inlet of supercharging device 22, and when such drainage, the drainage that combined filtering device 50 goes with each other all the time is set Mode is set, realizes and shunts switching between different water routes, and is mutually non-interference between water route, reverse osmosis membrane can be filled simultaneously The filtering for setting 30 pure water and concentrated water two path water increases filter in this way to realize the filter cartridge construction that multistage filtering is integrated Water series, and since a combined filtering device 50 need to only be arranged, so the volume of water purifier will not increase, and simplify Water pipeline, simultaneously as the concentrated water of 30 concentrated water water outlet C2 discharge of reverse osmosis membrane apparatus pass through combined filtering device 50 the Reverse osmosis membrane apparatus 30 is flowed back into after the filtering of two filter elements 52, such concentrated water is miscellaneous by the filtration of the second filter element 52 Matter is reduced, and effectively stops that the incrustation scale in waste water, such reverse osmosis membrane apparatus 30 are not easy when being filtered to it to reverse osmosis membrane Device 30 damages, so that the service life of reverse osmosis membrane apparatus 30 extends, therefore, the present embodiment provides water purifier solutions The skill of RO film reduced service life when existing water purifier volume when drainage series increases of having determined increases and drainage series reduces Art problem.

Wherein, in the present embodiment, the first filter element 51 is specially composite filter element, and composite filter element includes at least ultrafiltration (UF) Filter core and activated carbon (C) filter core, i.e. the first filter element 51 are C+UF composite filter elements, wherein it should be noted that the present embodiment In, can also include PP cotton filter element in composite filter element, i.e., the first filter element 51 can when the first filter element 51 is composite filter element With by polypropylene fibre (polypropylene, abbreviation：PP) the composite filter element that cotton filter core, active carbon filter core and ultra-filtration element three form, Drainage number can be increased in this way so that drainage is better, alternatively, in the present embodiment, the first filter element 51 can be with For single filter core, i.e. the first filter element 51 is made of a kind of filter core, for example, the first filter element 51 can be PP cotton filter element, Ultra-filtration element or active carbon filter core.

Wherein, in the present embodiment, the second filter element 52 is scale inhibition filter core, i.e., by scale removal filter core to the dissolving in concentrated water Property solid objects are filtered, under the filtration of scale removal filter core, total dissolved solidss (the Total dissolved of concentrated water Solids, referred to as：TDS) value reduces, and during such water purifier use, reverse osmosis membrane is not susceptible to scale formation, wherein this In embodiment, the quantity of scale removal filter core can be one in the second filter element 52, or can be two concatenated scale removal filters Core, when being including two concatenated filter cores, the concentrated water being discharged in this way from reverse osmosis membrane apparatus 30 just carries out after filtering twice Reflux or discharge, so that the TDS values in the concentrated water of reflux or discharge are lower, the soluble solid object pair in such concentrated water The damage smaller of reverse osmosis membrane, so that the service life is longer for reverse osmosis membrane.

Wherein, in the present embodiment, pre-filtering device 20 is set, such raw water is entering instead before reverse osmosis membrane apparatus 30 Permeable membrane device 30 carries out the filtering of early period before being filtered, the sundries in such water is filtered out a part, in the present embodiment, In order to enable the service life is longer for reverse osmosis membrane, specifically, pre-filtering device 20 is composite filter element, i.e. pre-filtering device 20 include at least two filter cores, in the present embodiment, by filtering at least twice before reverse osmosis membrane filtration, substantially reduce so anti- The filtering of permeable membrane is born, wherein in 20 composite filter element of pre-filtering device, one of filter core can be PP cotton filter element, separately One can be active carbon filter core, that is, choose two different filter element filterings.

Wherein, in the present embodiment, the water inlet of pre-filtering device 20 is connected with water inlet pipe 10, and is set on water inlet pipe 10 There is water intake ball valve 11, wherein water inlet pipe 10 is connected with running water pipe, and the water in water inlet pipe 10 is controlled by water intake ball valve 11 Stream.

Wherein, in the present embodiment, supercharging device 22 is booster pump, and booster pump is existing equipment, and structure and principle can To refer to the prior art, this embodiment is not repeated.

Wherein, in the present embodiment, as shown in Fig. 2, the water inlet C1 of the second water outlet B 2 and the reverse osmosis membrane apparatus 30 Between be connected by return duct 60, specifically, water inlet of second water outlet B 2 by return duct 60 first with supercharging device 22 Mouth is connected, and is then connected with the water inlet C1 of reverse osmosis membrane apparatus 30 by supercharging device 22, wherein set on return duct 60 There are multifunctional electromagnetic valves 61 and check valve 62, wherein in the present embodiment, the concentrated water being discharged from the second water outlet B 2 is due to passing through scale removal The filtering of filter core, such concentrated water enters return duct 60 when flowing back into reverse osmosis membrane apparatus 30, multifunctional electromagnetic valves 61 and check valve 62 are not susceptible to scale formation.

Wherein, it in the present embodiment, during the concentrate recirculation that the second water outlet B 2 is discharged, needs to discharge a part Concentrated water, specifically, as shown in Fig. 2, return duct 60 is equipped with the waste pipe 64 being connected to return duct 60, and waste pipe 64 is equipped with Wastewater valve 63, after wastewater valve 63 is opened, the concentrated water in return duct 60 discharges a part through waste pipe 64.

Wherein, in the present embodiment, entering water electromagnetic valve 21, multifunctional electromagnetic valves 61, check valve 62 and wastewater valve 63 are existing Control valve, specific operation principle and structure can refer to the prior art, be repeated no more in the present embodiment.

Wherein, in the present embodiment, the pipeline between the first water inlet A 1 and the pure water outlet C3 of reverse osmosis membrane apparatus 30 40 are equipped with high-voltage switch gear 32 and non-return valve 31.

Wherein, water purifier provided in this embodiment is in use, be specifically：When starting water processed, when in 10 tunnel of water inlet pipe Pressure when reaching 32 working value of high-voltage switch gear, closing of circuit, entering water electromagnetic valve 21, supercharging device 22,31 energization work of non-return valve Make, multifunctional electromagnetic valves 61, check valve 62 and wastewater valve 63 are closed, and start drainage, in filter process, by the water of reverse osmosis membrane It is discharged from pure water outlet C3, flows into the of combined filtering device 50 from the first water inlet A 1 through non-return valve 31 and high-voltage switch gear 32 One filter element 51 is filtered, and is flowed out from the first water outlet B 1 after filtering, pure water water receiving end 71 is flowed to by pure water pipe 70, and It is flowed out from concentrated water water outlet C2 without the concentrated water of reverse osmosis membrane, and combined filtering device 50 is entered by the second water inlet A 2 The second filter element 52 in, flow to return duct 60 from the second water outlet B 2 after filtering, wherein drainage after a certain period of time, combination Solenoid valve 61 and check valve 62 are opened, the water inlet end of filtered concentrate recirculation to supercharging device 22, meanwhile, wastewater valve 63 is regular It is opened so that a part of concentrated water is discharged from waste pipe 64 in return duct 60, i.e., the concentrated water being discharged from the second water outlet B 2 is (useless Water) it is divided into two-way, all the way through wastewater valve 63, directly drain, another way arrives check valve 62 back through multifunctional electromagnetic valves 61, returns To before booster pump, flow back after first passing through scale inhibition filter core due to waste water, can effectively stop the incrustation scale in waste water, can make wastewater valve 63, Multifunctional electromagnetic valves 61 and check valve 62 are not easy fouling, the long wastewater valve 63 in the court of a feudal ruler, multifunctional electromagnetic valves 61 and check valve 62 service life.

Embodiment two

Fig. 6 is the another structural schematic diagram of water purifier provided by the utility model, wherein the present embodiment and above-described embodiment Be distinguished as：In the present embodiment, as shown in fig. 6, further including：Pressure pot 41, the pure water of pressure pot 41 and reverse osmosis membrane apparatus 30 First water inlet A 1 of water outlet C3 and combined filtering device 50 is connected, specifically, going out from 30 pure water of reverse osmosis membrane apparatus The pure water of mouth of a river C3 discharges enters combined filtering device 50 through non-return valve 31 and 32 a portion of high-voltage switch gear and filters, another portion Point enter in pressure pot 41 and to be stored, when needing a large amount of pure water in use in this way, the pure water that is stored in pressure pot 41 It can enter in combined filtering device 50 and be filtered.

It wherein,, can be in advance by 30 filtered pure water of reverse osmosis membrane apparatus by the way that pressure pot 41 is arranged in the present embodiment Into being stored in pressure pot 41, so when needed, can the pure water in pressure pot 41 be directly filtered use, this Sample can shorten drainage duration.

Wherein, in the present embodiment, as shown in fig. 6, the water outlet of pre-filtering device 20 is connect by pure water pipe 23 with water purification Water end (W.E.) 24 is connected, and so in use, when relatively low to water quality requirement, will can directly pass through 20 mistake of pre-filtering device Water purification after filter is obtained from water purification water receiving end 24.

Term " comprising " and " having " in the specification and claims of the utility model and their any change Shape, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product Or equipment those of is not necessarily limited to clearly to list step or unit, but may include not listing clearly or for these The intrinsic other steps of process, method, product or equipment or unit.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, can also be integral； It can be mechanical connection, can also be electrical connection, can also be communication connection；Can be directly connected to, centre can also be passed through Medium is indirectly connected with, and can be the interaction relationship of the connection or two elements inside two elements, unless otherwise clear Restriction.For the ordinary skill in the art, above-mentioned term can be understood in the utility model as the case may be In concrete meaning.

Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of water purifier, includes at least：Reverse osmosis membrane apparatus (30), wherein the water inlet of the reverse osmosis membrane apparatus (30) (C1) entering water electromagnetic valve (21) is equipped at, it is characterised in that：Further include：

Combined filtering device (50), the combined filtering device (50) is interior to be equipped at least two the first filter elements mutually separated (51) and the second filter element (52) it opens up, and in the combined filtering device (50) and is connected to first filter element (51) The first water inlet (A1) and the first water outlet (B1), and the second water inlet for being connected to second filter element (52) (A2) and the second water outlet (B2)；

Wherein, first water inlet (A1) is connected with the pure water outlet (C3) of the reverse osmosis membrane apparatus (30), described First water outlet (B1) is connected with pure water water receiving end；

Second water inlet (A2) is connected with the concentrated water water outlet (C2) of the reverse osmosis membrane apparatus (30), and described second goes out The mouth of a river (B2) is connected with the water inlet (C1) of the reverse osmosis membrane apparatus (30).

2. water purifier according to claim 1, which is characterized in that further include：Pressure pot (41), the pressure pot (41) with The pure water outlet (C3) of the reverse osmosis membrane apparatus (30) and the first water inlet (A1) of the combined filtering device (50) It is connected.

3. water purifier according to claim 2, which is characterized in that first filter element (51) is composite filter element, institute It states composite filter element and includes at least ultra-filtration element and active carbon filter core, or

First filter element (51) is single filter core.

4. according to any water purifiers of claim 1-3, which is characterized in that second filter element (52) is filtered for scale inhibition Core.

5. according to any water purifiers of claim 1-3, which is characterized in that second water outlet (B2) and the reverse osmosis It is connected by return duct (60) between the water inlet (C1) of permeable membrane device (30), and the return duct (60) is equipped with combination electricity Magnet valve (61) and check valve (62).

6. water purifier according to claim 5, which is characterized in that the return duct (60) is equipped with and the return duct (60) waste pipe (64) being connected to, and the waste pipe (64) is equipped with wastewater valve (63).

7. according to any water purifiers of claim 1-3, which is characterized in that first water inlet (A1) and the reverse osmosis Pipeline (40) between the pure water outlet (C3) of permeable membrane device (30) is equipped with high-voltage switch gear (32) and non-return valve (31).

8. water purifier according to claim 6, which is characterized in that further include：Pre-filtering device (20), the preposition mistake The water outlet of filter device (20) is connected with the water inlet (C1) of the reverse osmosis membrane apparatus (30)；

And the water outlet of the pre-filtering device (20) is connected by pure water pipe (23) with water purification water receiving end (24).

9. water purifier according to claim 8, which is characterized in that the pre-filtering device (20) is composite filter element, institute It states composite filter element and includes at least polypropylene fibre PP cotton filter element and activated carbon cartridge.

10. water purifier according to claim 8, which is characterized in that the water inlet of the pre-filtering device (20) with into Water pipe (10) is connected, and the water inlet pipe (10) is equipped with water intake ball valve (11)；

Supercharging device (22), and described second are equipped between the pre-filtering device (20) and the reverse osmosis membrane apparatus (30) Water outlet (B2) is connected by the return duct (60) with the water inlet of the supercharging device (22).