CN212833156U - Domestic central RO reverse osmosis water purification system - Google Patents

Abstract

The utility model relates to a domestic central RO reverse osmosis water purification system, which comprises a pre-filter and a first RO reverse osmosis filter which are arranged in sequence, wherein the pre-filter comprises a PP cotton filter element and a composite filter element, an ozone sterilization device is arranged between the pre-filter and the first RO reverse osmosis filter, a first pure water port and a first concentrated water port are arranged on the first RO reverse osmosis filter, a pure water tank is communicated with the first pure water port, and a concentrated water tank is communicated with the first concentrated water port; a bathing pipeline is communicated between the ozone sterilization device and the first RO reverse osmosis filter; the utility model can reduce the flux level of the first RO reverse osmosis filter, and greatly reduce the replacement cost of the RO membrane.

Description

Domestic central RO reverse osmosis water purification system

Technical Field

The utility model belongs to the technical field of the water purification, especially domestic central RO reverse osmosis water purification system field.

Background

According to the relevant research data of the World Health Organization (WHO), the main ways and approximate proportions of the harmful substances in water absorbed by the human body are as follows: 1/3 oral intake (drinking water, brushing teeth, food), 1/3 skin absorption (washing hands, bathing), 1/3 respiratory inhalation (cleansing face, bathing), and in the face of such conditions, the world health organization calls for everyone: water for daily use and drinking water should meet the same criteria! The whole house purified water can comprehensively take care of the water demand of each person in the house, the life quality of the whole family is improved, and the family can drink healthy water and use safe water at any time and any place indoors; therefore, some manufacturers have introduced whole-house purification equipment to achieve the purpose of using purified water in the whole house, but the existing water purification technology adopts reverse osmosis technology, which is a membrane separation technology that separates a solvent from a solution by taking pressure difference as a driving force; applying pressure to the solution on one side of the membrane, and when the pressure exceeds its osmotic pressure, the solvent will reverse osmosis against the direction of natural osmosis, thereby obtaining a permeated solvent, i.e. permeate, on the low pressure side of the membrane; obtaining concentrated solution at the high-pressure side, namely concentrated solution; the key and cost of purification is therefore mostly on RO membranes; as is well known, the purification rate of the RO membrane is limited, the flux of 50G and the water production rate are 0.13L/min. When a large amount of water is used for cooking or guests at home, the requirement that the guests need to use one barrel of water and then fill one barrel of water is 52.3min, even if 400G of high flux is used, the water production speed is only 1L/min, the replacement cost is very expensive, and the requirement of daily washing, especially bathing cannot be met; however, the chronic injury of the serious chloride and other harmful substances in the tap water to the human body has to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a domestic central RO water purification system which has low cost, can meet daily bathing needs and can meet household water purification needs in order to solve the problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a household central RO reverse osmosis water purification system comprises a pre-filter and a first RO reverse osmosis filter which are sequentially arranged, wherein the pre-filter comprises a PP cotton filter element and a composite filter element, an ozone sterilization device is arranged between the pre-filter and the first RO reverse osmosis filter, a first pure water port and a first concentrated water port are formed in the first RO reverse osmosis filter, a pure water tank is communicated with the first pure water port, and a concentrated water tank is communicated with the first concentrated water port; a bathing pipeline is communicated between the ozone sterilization device and the first RO reverse osmosis filter.

As a further optimization scheme of the utility model, composite filter element includes KDF filter element layer, coconut husk active carbon filter element layer, calcium sulfite filter element layer, year silver-colored active carbon layer.

As the utility model discloses a further optimization scheme, be equipped with second RO reverse osmosis filter between first dense mouth of a river and the dense water tank, be equipped with the dense mouth of a river of second pure mouth of a river and second on the second RO reverse osmosis filter, the second pure mouth of a river and pure water tank intercommunication, the dense mouth of a river of second and dense water tank intercommunication.

As a further optimization of the present invention, the flux of the second RO reverse osmosis filter is smaller than the flux of the first RO reverse osmosis filter.

As a further optimization scheme of the utility model, be equipped with the solenoid valve between second RO reverse osmosis filter and the dense water tank, parallelly connected being equipped with secondary filter on the second RO reverse osmosis filter, secondary filter's one end and solenoid valve intercommunication, the other end and second RO reverse osmosis filter's water inlet UNICOM, one side of secondary filter is equipped with the check valve.

The beneficial effects of the utility model reside in that:

1) the utility model meets the requirement of ultra-large flux in short time in household use on the basis of adopting the pre-filter to filter serious chloride and other harmful substances in tap water, and avoids the flux short plate of RO reverse osmosis technology in the prior art;

2) meanwhile, the system can reduce the flux level of the first RO reverse osmosis filter, and greatly reduce the replacement cost of the RO membrane.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

in the figure: 1. a pre-filter; 11. a PP cotton filter element; 12. a composite filter element; 2. a first RO reverse osmosis filter; 21. a first pure water port; 22. a first concentrate port; 3. an ozone sterilization device; 4. a pure water tank; 5. a concentrated water tank; 6. a bathing branch; 7. a second RO reverse osmosis filter; 71. a second purified water port; 72. a second concentrate port; 73. a secondary filter; 8. an electromagnetic valve; 9. a one-way valve.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

As shown in fig. 1, a household central RO reverse osmosis water purification system comprises a pre-filter 1, an ozone sterilization device 3 and a first RO reverse osmosis filter 2, which are sequentially arranged, wherein the pre-filter 1 comprises a PP cotton filter element 11 and a composite filter element 12, and harmful substances such as silt particles, colloid, turbidity, rust and the like in tap water can be filtered by PP cotton; the situation that the filter element is blocked due to the direct entry of the larger harmful substances into the rear filter element is prevented; the composite filter element 12 adopted here comprises a KDF filter element layer, a coconut shell activated carbon filter element layer, a calcium sulfite filter element layer and a silver-loaded activated carbon layer; firstly, KDF is a high-purity copper alloy, heavy metal and acid radical ions in water can be removed, the activation degree of water is improved, when tap water flows through the KDF, pollutants such as residual chlorine and harmful heavy metal ions in the water are adsorbed to the surface and pore channels of a filter element, the residual chlorine is reduced into chlorine ions under the action of the KDF, and the heavy metal ions are also oxidized and reduced into metal complexes which are not contained in the water and not absorbed by a human body, so that the purpose of certain purification is achieved; secondly, the second coconut shell activated carbon filter element layer can remove harmful substances such as heterochrosis, peculiar smell, heavy metal and the like in tap water; moreover, the third calcium sulfite filter layer can effectively remove residual chlorine, trichloromethane and other carcinogenic chlorine compounds; finally, a silver-loaded activated carbon layer is adopted, anion is exchanged for micropores of activated carbon, a new technology purification product is adopted for high-temperature fixation, after the activated carbon is used for adsorbing harmful substances, the silver ions are used for decomposing the harmful substances such as formaldehyde, benzene, ammonia and the like to decompose the harmful substances into carbon dioxide and water, and no secondary pollution is caused; in a word, most harmful substances in water, especially chloride and heavy metal harmful substances in water, are filtered by the composite filter element; most harmful substances with larger particles, especially carcinogenic substances such as residual chlorine, chloride and the like can be filtered by the pre-filter, so that the ozone sterilization device 3 is arranged behind the pre-filter in order to further kill the harmful substances such as tiny bacteria, viruses and the like, and the ozone sterilization device 3 can efficiently inactivate the bacteria and the viruses by utilizing the far away of ozone sterilization, thereby greatly reducing the harmful substances to human bodies in the raw water;

in addition, the RO membrane with the precision reaching 0.0001 micron is adopted by the RO reverse osmosis filter element, so that chemical pollutants such as pesticide, bromobenzene and bromate can be effectively filtered, and heavy metals are deeply filtered; a first pure water port 21 and a first concentrated water port 22 are arranged on the first RO reverse osmosis filter 2, a pure water tank 4 is communicated with the first pure water port 21, and a concentrated water tank 5 is communicated with the first concentrated water port 22; a bathing branch 6 is communicated between the ozone sterilization device 3 and the first RO reverse osmosis filter 2; therefore, the water source for washing and bathing water in daily life can be water on the bathing branch, so that the balance between the use cost and the use reliability is realized, and the problem that the traditional reverse osmosis type water purifying device system cannot effectively meet the requirement of a large amount of water consumption in a centralized bathing process is avoided;

furthermore, in consideration of the use cost, the proportion of the waste water to the purified water of the current reverse osmosis water purification system is about 1:1, namely, one liter of pure water is produced, and one liter of concentrated water is produced at the same time, and the concentrated water is usually directly discharged out of a sewer, so that great water source waste is caused; therefore, a second RO reverse osmosis filter 7 is arranged between the first concentrated water port 22 and the concentrated water tank 5, a second pure water port 71 and a second concentrated water port 72 are arranged on the second RO reverse osmosis filter 7, the second pure water port 71 is communicated with the pure water tank 4, and the second concentrated water port 72 is communicated with the concentrated water tank 5; the flux of the second RO reverse osmosis filter 7 may be made smaller than the flux of the first RO reverse osmosis filter 2 for cost savings; thus, the concentrated water generated by the first reverse osmosis filter is secondarily filtered by the arrangement of the second RO reverse osmosis filter 7, and part of water source is recycled; the discharge of concentrated water of primary filtration is reduced; in addition, in order to utilize the waste of the concentrated water, a concentrated water tank in the system is communicated to a toilet bowl, so that the waste water is reused, and the water resource is further saved;

furthermore, an electromagnetic valve 8 is arranged between the second RO reverse osmosis filter 7 and the concentrated water tank 5, a secondary filter 73 is connected in parallel on the second RO reverse osmosis filter 7, one end of the secondary filter 73 is communicated with the electromagnetic valve 8, the other end is communicated with a water inlet of the second RO reverse osmosis filter 7, and one side of the secondary filter 73 is provided with a one-way valve 9; when the device is used, when the concentrated water in the concentrated water tank is filled with concentrated water, the concentrated water can flow through the secondary filter by opening or closing the electromagnetic valve, the filtered concentrated water enters the second RO reverse osmosis filter 7 again for filtering, and the circulation is carried out in such a way, so that the water of the concentrated water can be recovered as much as possible, and more concentrated water is generated; the secondary filter connected in parallel can adopt the same structure as the front filter, and can filter harmful substances in the concentrated water to a certain degree, so that in the continuous circulation process of the concentrated water, the harmful substances are continuously intercepted and then enter the secondary filter, the consumption of the second RO reverse osmosis filter 7 is reduced, and the service life of the second RO reverse osmosis filter 7 is prolonged; this can reduce the cost of replacing the second RO reverse osmosis filter 7 by replacing the secondary filter.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (5)

1. The utility model provides a domestic central RO reverse osmosis water purification system which characterized in that: the device comprises a pre-filter (1) and a first RO (reverse osmosis) filter (2) which are sequentially arranged, wherein the pre-filter (1) comprises a PP cotton filter element (11) and a composite filter element (12), an ozone sterilization device (3) is arranged between the pre-filter (1) and the first RO filter (2), a first pure water port (21) and a first concentrated water port (22) are arranged on the first RO filter (2), a pure water tank (4) is communicated with the first pure water port (21), and a concentrated water tank (5) is communicated with the first concentrated water port (22); a bathing branch (6) is communicated between the ozone sterilization device (3) and the first RO reverse osmosis filter (2).

2. The domestic central RO reverse osmosis water purification system of claim 1, characterized in that: the composite filter element (12) comprises a KDF filter element layer, a coconut shell activated carbon filter element layer, a calcium sulfite filter element layer and a silver-loaded activated carbon layer.

3. The domestic central RO reverse osmosis water purification system of claim 1, characterized in that: a second RO reverse osmosis filter (7) is arranged between the first concentrated water port (22) and the concentrated water tank (5), a second pure water port (71) and a second concentrated water port (72) are arranged on the second RO reverse osmosis filter (7), the second pure water port (71) is communicated with the pure water tank (4), and the second concentrated water port (72) is communicated with the concentrated water tank (5).

4. A domestic central RO reverse osmosis water purification system according to claim 3, wherein: the flux of the second RO reverse osmosis filter (7) is smaller than the flux of the first RO reverse osmosis filter (2).

5. A domestic central RO reverse osmosis water purification system according to any of claims 3 or 4, characterized in that: be equipped with solenoid valve (8) between second RO reverse osmosis filter (7) and dense water tank (5), parallelly connected secondary filter (73) of being equipped with on second RO reverse osmosis filter (7), the one end and solenoid valve (8) the intercommunication of secondary filter (73), the water inlet UNICOM of the other end and second RO reverse osmosis filter (7), one side of secondary filter (73) is equipped with check valve (9).

Images