CN208577521U

CN208577521U - A kind of water-saving RO water purification machine

Info

Publication number: CN208577521U
Application number: CN201820687719.0U
Authority: CN
Inventors: 陈毅平
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-09
Filing date: 2018-05-09
Publication date: 2019-03-05
Anticipated expiration: 2028-05-09

Abstract

The utility model relates to a kind of water-saving RO water purification machines, including pretreatment unit and reverse osmosis membrane assembly, the pretreatment unit includes sequentially connected PP cotton filter element, the first active carbon filter core and ultrafiltration membrane, the water outlet of the ultrafiltration membrane connects cyclic water tank by the first valve, the cyclic water tank is connected by force (forcing) pump with the water inlet end of reverse osmosis membrane, the cyclic water tank connects conductivity sensor, and the water producing tank connects liquid level sensor.The water-saving RO water purification machine water rate of recovery described in the utility model is about 70-75%, has the characteristics that water-saving, while quality of drinking water obtained is high.

Description

A kind of water-saving RO water purification machine

Technical field

The utility model relates to purifier, especially a kind of water-saving RO water purification machine.

Background technique

RO water purification machine (or RO reverse osmosis water purification machine/RO water purifier) is to carry out water filtering using reverse osmosis technology principle Purifier.The pressure applied by the external world, such as pressurizeed by pump, allow hydrone by reverse osmosis membrane, and in water The impurity such as inorganic salts, heavy metal ion, organic matter, colloid, bacterium, virus can not penetrate reverse osmosis membrane, so that after purification Be separated, obtain dialyzate, and the water not penetrated forms condensed water because of solute increase.

Since degree of filtration of the reverse osmosis membrane system to water is very deep, a large amount of concentrate, commercially available RO pure water are often generated The water rate of recovery (amount of inlet water when pure water water ÷ water when the water rate of recovery=water processed) of machine generally in 25%-30% or so, It means that 75% or so water inlet needs are outer and is discharged to drainage pipeline, water waste is very serious.Water is claimed in the prior art The purifier of 100% reuse, its essence is the principles according to gradient water, and the concentrate that reverse osmosis membrane filtration obtains is used for Kitchen water, lavatory flushing etc. do not solve the problems, such as that the reverse osmosis film water rate of recovery is low fundamentally, but also bring existing The inconvenience of field installation.Therefore, the RO water purification machine with water saving advantage becomes the hot spot that consumer chooses water purification machine.

Utility model content

For the serious problem of common RO water purification machine waste water resource, the utility model provides a kind of water-saving RO water purification machine, By the way that the cooperating of cyclic water tank and reverse osmosis membrane assembly is arranged, so that the water rate of recovery of the equipment compares common RO water purification machine Improve 45-50%.

To solve this technical problem, the utility model takes following scheme:

A kind of water-saving RO water purification machine, including pretreatment unit and reverse osmosis membrane assembly, the pretreatment unit include successively The water outlet of the PP cotton filter element of connection, the first active carbon filter core and ultrafiltration membrane, the ultrafiltration membrane passes through the first valve connection circulation Water tank, the cyclic water tank are connected by force (forcing) pump with the water inlet end of reverse osmosis membrane, the concentrated solution outlet packet of the reverse osmosis membrane First outlet and second outlet are included, the first outlet is connected by the second valve with cyclic water tank, the second outlet connection Third valve, the second active carbon filter core of dialyzate outlet connection of the reverse osmosis membrane, the second active carbon filter core connection produce Water tank；The cyclic water tank connects conductivity sensor, and the water producing tank connects liquid level sensor.

Further, the precision of the PP cotton filter element is 5-10 μm.

Further, first active carbon filter core is granular activated carbon filter core.

Further, second active carbon filter core is coconut activated filtration core.

Further, the ultrafiltration membrane is hollow fiber ultrafiltration membrane, and molecular cut off is 1000-1000000 dalton.

Further, the ultrafiltration membrane is polyvinylidene fluoride (PVDF) ultrafiltration membrane.

Further, the reverse osmosis membrane is rolled film, and molecular cut off is less than or equal to 100 dalton.

By using preceding solution, the utility model compared with prior art, has the advantages that water-saving, this is practical new The water-saving RO water purification machine water rate of recovery is about 70-75% described in type, is realized by liquid level sensor and conductivity sensor cooperation anti- The concentrate circulating and recovering of permeable membrane realizes pretreatment link by the first active carbon filter core and the second active carbon filter core respectively The essence absorption of thick absorption and last pure water, it is ensured that obtain the drinking water of high-quality.

Detailed description of the invention

Fig. 1 is structural schematic diagram provided by the embodiment of the utility model.

Specific embodiment

Technical solutions of the utility model are further elaborated with reference to the accompanying drawings and examples, present embodiment can have Different forms and it is not understood as limited to explanation set forth herein.Identical appended drawing reference represents identical always in text Element, similar appended drawing reference represent similar element.

Embodiment 1:

With reference to Fig. 1, water-saving RO water purification machine includes pretreatment unit and reverse osmosis membrane assembly, and wherein pretreatment unit is by PP cotton Filter core 1, the first active carbon filter core 2 and ultrafiltration membrane 3 form, and the entrance (water inlet of water-saving RO water purification machine) of PP cotton filter element 1 is direct It is connected with running water pipe, the outlet of PP cotton filter element 1 is connected with the entrance of the first active carbon filter core 2, and the first active carbon filter core 2 goes out Mouth is connected with the entrance of ultrafiltration membrane 3.Reverse osmosis membrane assembly mainly includes cyclic water tank 5, reverse osmosis membrane 9, the second active carbon filter core 10 and water producing tank 11, the import of cyclic water tank 5 be connected with the water outlet of ultrafiltration membrane 3, conductivity sensor is equipped in cyclic water tank 5 51, cyclic water tank 5 is the water supply of reverse osmosis membrane 9, the active carbon filtration of dialyzate outlet connection second of reverse osmosis membrane 9 by force (forcing) pump 6 Core 10, the concentrated solution outlet of reverse osmosis membrane 9 include first outlet and second outlet, wherein first outlet by the second valve 7 with Cyclic water tank 5 is connected, and second outlet connects third valve 8.The water outlet of second active carbon filter core 10 connects water producing tank 11, produces water Case 11 connects liquid level sensor 111.

Preferably, the precision of PP cotton filter element 1 is 5 μm, is suitble to city tap-water pipeline.First active carbon filter core 2 is particle Active carbon composition.The molecular cut off of ultrafiltration membrane 3 is 1000000 dalton, preferably hollow fiber ultrafiltration membrane, and material is poly- inclined Vinyl fluoride (PVDF), operating pressure 0.1-0.3Mpa.Reverse osmosis membrane 9 is rolled film, and material is composite membrane, and molecular cut off is 50 dalton, operating pressure 0.5-4MPa.Second active carbon filter core 10 is coconut activated filtration core.

The working principle of water-saving RO water purification machine is that the tap water in running water pipe initially enters PP cotton filter element 1, PP cotton filter element Iron rust, silt, bulky grain suspended matter in 1 removable tap water etc., purified water enter the first active carbon filter core 2, a huge sum of money The harmful chemicals such as category, organic matter are adsorbed by the first active carbon filter core 2, and purified water enters ultrafiltration membrane 3 later, for going Except bacterium, fractionated viral and large scale colloid etc., the water body after ultrafiltration membrane treatment completes pretreatment, is stored in cyclic water tank In 5, it is prepared to enter into reverse osmosis membrane.

Reverse osmosis membrane assembly has following three kinds of states:

The first state produces water state, when liquid level sensor 111 detects the liquid level in water producing tank 11 lower than setting most Low liquid level, force (forcing) pump 6 are opened, and are supplied water by force (forcing) pump 6 to reverse osmosis membrane 9, the first valve 4 is opened at this time, and the second valve 7 is opened It opens, third valve 8 is closed.

Second of state stops producing water state, when liquid level sensor 111 detects that the liquid level in water producing tank 11 reaches highest Liquid level closes force (forcing) pump 6, stops supplying water to reverse osmosis membrane 9, and reverse osmosis membrane 9 stops working, and the first valve 4 is closed at this time, and second Valve 7 is closed, and third valve 8 is closed.

The third state, hull-borne, cyclic water tank 5 is interior to be arranged conductivity sensor 51, when the water in cyclic water tank 5 Conductivity reaches the first setting value, then controls the unlatching of the first valve 4, and the second valve 7 is closed, and third valve 8 is opened, third valve 8 can be such that the concentrate in reverse osmosis membrane 9 is discharged, the working condition of reverse osmosis membrane 9 is not drained by drainpipe outside piping connection Influence.When the water in cyclic water tank 5 conductivity be lower than the second setting value, be restored to production water state.

Reverse osmosis membrane 9 almost can remove whole ions, the production water of reverse osmosis membrane 9 in water and adsorb through the second active carbon filter core 10 Foreign odor, peculiar smell etc. are removed, the purification finally obtained produces water and is stored in water producing tank 11.

In use, the water inlet of water-saving RO water purification machine is connected on running water pipe, water-saving RO water purification machine starts to produce water, works as liquid Level sensor 111 detects that the liquid level in water producing tank 11 reaches highest liquid level, stops producing water.User drinks water so that in water producing tank 11 Storage purified water reduce, when liquid level sensor 111 detect the liquid level in water producing tank 11 lower than setting minimum liquid level, restore Produce water.With the propulsion for producing water process, the ion concentration in cyclic water tank 5 is gradually risen, and conductivity is gradually increased, and works as recirculated water The conductivity of water in case 5 reaches the first setting value, starts to drain, and reverse osmosis membrane 9, which is generally lain in, at this time produces in water state, specifically Depending on the level condition that liquid level sensor 111 detects in water producing tank 11.As pretreated water is right by the first valve 4 Cyclic water tank 5 is supplemented, and the conductivity of the water in cyclic water tank 5 is gradually reduced, when the conductivity of the water in cyclic water tank 5 is low In the second setting value, it is restored to production water state.

The equipment water rate of recovery is about 70%, improves 45% or so compared to the common RO water purification machine water rate of recovery, passes through liquid The concentrate circulating and recovering of reverse osmosis membrane is realized in level sensor and conductivity sensor cooperation, passes through the first active carbon filter core and second Active carbon filter core realizes the thick absorption of pretreatment link and the essence absorption of last pure water respectively, it is ensured that obtains drinking for high-quality Water.

Embodiment 2:

PP cotton filter element 1 on the basis of embodiment 1, is replaced with 10 μm of precision of PP cotton filter element, for city by the present embodiment The more occasion of bulky grain suspended matter in the water of town avoids PP cotton filter element blocking that water efficiency processed is caused to decline, and because of filter core mistake It is inconvenient brought by frequent replacement to cross.The molecular cut off of ultrafiltration membrane 3 is 1000 dalton, the retention molecule of reverse osmosis membrane 9 Amount is 100 dalton.

The equipment water rate of recovery is about 75%, improves 50% compared to the common RO water purification machine water rate of recovery, is passed by liquid level The concentrate circulating and recovering of reverse osmosis membrane is realized in sensor and conductivity sensor cooperation, passes through the first active carbon filter core and the second activity Filtration core realizes the thick absorption of pretreatment link and the essence absorption of last pure water respectively, it is ensured that obtains the drinking water of high-quality.

Embodiment 3:

PP cotton filter element 1 on the basis of embodiment 1, is replaced with 8 μm of precision of PP cotton filter element, ultrafiltration membrane 3 by the present embodiment Molecular cut off be 10000 dalton, the molecular cut off of reverse osmosis membrane 9 is 80 dalton.It is measured through use process, water The rate of recovery is about 72%.

The present embodiment is only exemplary, and the utility model is not limited to such structure, and those skilled in the art should think It arrives, PP cotton filter element 1 can also be other numerical value, such as 6 μm, 7 μm or 9 μm, the molecular cut off of ultrafiltration membrane 3 can also be 50000 dalton, 450000 dalton, 600000 dalton, 800000 dalton, the molecular cut off of reverse osmosis membrane 9 are 25 Dalton, 45 dalton, 60 dalton, 70 dalton, to adapt to the demand of different quality and water supply flow.

Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is Illustratively, it should not be understood as limiting the present invention, those skilled in the art are not departing from the utility model Principle and objective in the case where above-described embodiment can be changed in the scope of the utility model, modify, replace and Modification.

Claims

1. a kind of water-saving RO water purification machine, including pretreatment unit and reverse osmosis membrane assembly, it is characterised in that: the pretreatment unit Including sequentially connected PP cotton filter element, the first active carbon filter core and ultrafiltration membrane, the water outlet of the ultrafiltration membrane passes through the first valve Cyclic water tank is connected, the cyclic water tank is connected by force (forcing) pump with the water inlet end of reverse osmosis membrane, the concentration of the reverse osmosis membrane Liquid outlet includes first outlet and second outlet, and the first outlet is connected by the second valve with cyclic water tank, and described second Outlet connection third valve, the second active carbon filter core of dialyzate outlet connection of the reverse osmosis membrane, the described second active carbon filtration Core connects water producing tank；The cyclic water tank connects conductivity sensor, and the water producing tank connects liquid level sensor.

2. water-saving RO water purification machine according to claim 1, it is characterised in that: the precision of the PP cotton filter element is 5-10 μm.

3. water-saving RO water purification machine according to claim 1, it is characterised in that: first active carbon filter core is seed activity Filtration core.

4. water-saving RO water purification machine according to claim 1, it is characterised in that: second active carbon filter core is coconut activated Filtration core.

5. water-saving RO water purification machine according to claim 1, it is characterised in that: the ultrafiltration membrane is hollow fiber ultrafiltration membrane, Molecular cut off is 1000-1000000 dalton.

6. water-saving RO water purification machine according to claim 1, it is characterised in that: the ultrafiltration membrane is Kynoar ultrafiltration Film.

7. water-saving RO water purification machine according to claim 1, it is characterised in that: the reverse osmosis membrane is rolled film, retention point Son amount is less than or equal to 100 dalton.