CN113697985A

CN113697985A - Large-flux filtering system

Info

Publication number: CN113697985A
Application number: CN202111136681.0A
Authority: CN
Inventors: 胡兴亿; 缪虹娟; 霍嘉健
Original assignee: Foshan City Shunde District Bpsafe Environmental Protection Technology Co ltd
Current assignee: Foshan City Shunde District Bpsafe Environmental Protection Technology Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2021-11-26

Abstract

The invention discloses a large-flux filtering system which is provided with a water inlet, a pure water port and a wastewater port and comprises a composite filter element, a water inlet valve, a booster pump and a second RO (reverse osmosis) membrane filter element; the large-flux filtering system uses two RO membrane filter elements connected in parallel, and the total flux of the filtering system is increased in a mode of two RO membrane filter elements connected in parallel and having smaller flux, so that the large-flux filtering system can filter more pure water in unit time. And composite filter core and second RO membrane filter core are independent each other, appear polluting or life-span when reaching the time when composite filter core or second RO membrane filter core, only need to change corresponding composite filter core or second RO membrane filter core can, avoid current big flux filtration system need change the condition of whole big flux filter core, not only realize the purpose of big flux water purification, still practice thrift the cost of changing big flux filter core.

Description

Large-flux filtering system

Technical Field

The invention relates to the field of water purification systems, in particular to a large-flux filtration system.

Background

At present, tap water contains a lot of substances which are not beneficial to health, so more and more people can set up water purifying equipment at home to filter the tap water. Current water purification unit mainly relies on reverse osmosis membrane (RO membrane) to filter the running water, in order to filter enough pure water in time, all can set up big flux reverse osmosis filter core in the water purification unit, and big flux is 1000G or more.

In prior art water purification unit, when the filter core appears polluting or the life-span is up to date, need to change the whole filter core of purifier, the flow of purifier is bigger more usually, and the replacement cost of filter core just is higher more, and consequently big flux purifier filter core replacement cost is just higher. And single filter core water purification unit is relatively poor to quality of water environment or to the user that produces the higher requirement of water, and its mode of producing water does not satisfy the requirement.

Disclosure of Invention

The invention aims to provide a large-flux filtering system to solve the problem that the filter element of a large-flux water purifier is high in replacement cost.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a large-flux filtering system which is provided with a water inlet, a pure water port and a wastewater port and comprises a composite filter element, a water inlet valve, a booster pump and a second RO (reverse osmosis) membrane filter element;

the composite filter element comprises a preposed filter element and a first RO membrane filter element which are not communicated with each other; the water inlet end of the preposed filter element is communicated with the water inlet, the water outlet end of the preposed filter element is communicated with the water inlet valve, and the water inlet valve is communicated with the water inlet end of the booster pump;

the water outlet end of the booster pump is respectively communicated with the water inlet ends of the first RO membrane filter element and the second RO membrane filter element; pure water outlet ends of the first RO membrane filter element and the second RO membrane filter element are respectively connected with a pure water port; and the wastewater end of the second RO membrane filter element is communicated with the wastewater port.

In the large-flux filtering system, the wastewater end of the first RO membrane filter element is communicated with the water inlet end of the front filter element in a one-way mode.

In the large-flux filtering system, the composite filter element further comprises a filtering cover and a shell; the preposed filter element and the first RO membrane filter element are arranged in the shell, and the filter cover is detachably connected with the shell;

the filter cover is provided with a raw water inlet, a primary filtered water outlet, a primary filtered water inlet and a pure water outlet;

the filter cover is provided with a first cavity, a second cavity, a third cavity and a fourth cavity which are not communicated with each other, and the first cavity, the second cavity, the third cavity and the fourth cavity are respectively arranged in an annular shape; the first chamber surrounds the periphery of the second chamber, the second chamber surrounds the periphery of the third chamber, and the third chamber surrounds the periphery of the fourth chamber;

the first chamber is respectively communicated with the raw water inlet and the water inlet end of the preposed filter element; the second chamber is respectively communicated with the primary filtered water outlet and the water outlet end of the pre-filter element, the third chamber is respectively communicated with the primary filtered water inlet and the water inlet end of the first RO membrane filter element, and the fourth chamber is respectively communicated with the pure water outlet and the pure water outlet end of the first RO membrane filter element;

and the waste water outlet end of the first RO membrane filter element is communicated with the first chamber in a one-way mode.

In the high flux filtration system, the flux of the booster pump is 800 gallons per hour, the flux of the first RO membrane cartridge is 300 gallons per hour, and the flux of the second RO membrane cartridge is 700 gallons per hour.

In the large-flux filtering system, a water path between the pure water outlet end of the second RO membrane filter element and the pure water port is provided with a high-voltage switch, and the high-voltage switch is electrically connected with the booster pump.

In the large-flux filtering system, a first check valve is arranged on a water path between the high-pressure switch and the pure water outlet end of the second RO membrane filter element.

In the large-flux filtering system, a wastewater proportional valve is arranged on a water path between the wastewater end of the second RO membrane filter element and the wastewater port.

In the large-flux filtering system, a second check valve is arranged on a water path between the water inlet and the pure water outlet end of the first RO membrane filter element.

One technical scheme in the invention can have the following beneficial effects:

the large-flux filtering system uses two RO membrane filter elements connected in parallel, and the total flux of the filtering system is increased in a mode of two RO membrane filter elements connected in parallel and having smaller flux, so that the large-flux filtering system can filter more pure water in unit time. And composite filter core and second RO membrane filter core are independent each other, appear polluting or life-span when reaching the time when composite filter core or second RO membrane filter core, only need to change corresponding composite filter core or second RO membrane filter core can, avoid current big flux filtration system need change the condition of whole big flux filter core, not only realize the purpose of big flux water purification, still practice thrift the cost of changing big flux filter core.

Drawings

FIG. 1 is a schematic overall structure of one embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a composite filter element according to one embodiment of the present invention;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

FIG. 4 is a schematic diagram of a filter lid according to one embodiment of the present invention;

in the drawings: a water inlet 1, a pure water port 2 and a waste water port 3; the device comprises a composite filter element 4, a water inlet valve 5, a booster pump 6, a second RO membrane filter element 7, a high-pressure switch 8, a first check valve 9 and a second check valve 10;

a pre-filter 41, a first RO membrane filter 42; a filter cover 43, a housing 44; a waste water proportional valve 71; a raw water inlet 431, an initial filtered water outlet 432, an initial filtered water inlet 433, and a pure water outlet 434; a first chamber 435, a second chamber 436, a third chamber 437, a fourth chamber 438.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 4, the invention provides a large-flux filtration system, which is provided with a water inlet 1, a pure water port 2 and a wastewater port 3, and comprises a composite filter element 4, a water inlet valve 5, a booster pump 6 and a second RO membrane filter element 7;

the composite filter element 4 comprises a front filter element 41 and a first RO membrane filter element 42 which are not communicated with each other; the water inlet end of the preposed filter element 41 is communicated with the water inlet 1, the water outlet end of the preposed filter element 41 is communicated with the water inlet valve 5, and the water inlet valve 5 is communicated with the water inlet end of the booster pump 6;

the water outlet end of the booster pump 6 is respectively communicated with the water inlet ends of the first RO membrane filter element 42 and the second RO membrane filter element 7; the pure water outlet ends of the first RO membrane filter element 42 and the second RO membrane filter element 7 are respectively connected with the pure water port 2; and the waste water end of the second RO membrane filter element 7 is communicated with the waste water port 3.

The large-flux filtering system uses two RO membrane filter elements connected in parallel, and the total flux of the filtering system is increased in a mode of two RO membrane filter elements connected in parallel and having smaller flux, so that the large-flux filtering system can filter more pure water in unit time. And composite filter element 4 and second RO membrane filter element 7 are independent each other, appear polluting or when life-span arrives in the time when composite filter element 4 or second RO membrane filter element 7, only need to change composite filter element 4 or second RO membrane filter element 7 that correspond can, avoid current big flux filtration system need change the condition of whole big flux filter element, not only realize the purpose of big flux water purification, still practice thrift the cost of changing big flux filter element.

The pre-filter element 41 plays a role of pre-filtering, when tap water enters from the water inlet, impurities in the tap water are filtered out through the pre-filter element 41, and then pure water is filtered through the first RO membrane filter element 42 or the second RO membrane filter element 7. So set up, prevent that impurity in the running water from attaching on the RO membrane and influencing the work of first RO membrane filter core 42 or second RO membrane filter core 7, can prolong the life of first RO membrane filter core 42 and second RO membrane filter core 7.

The water which is not filtered by the large-flux filtering system is raw water, the raw water enters the preposed filter element 41 from the water inlet 1, and the preposed filter element 41 filters the raw water into primary filter water; after being discharged from the water outlet end of the preposed filter element 41, the initial filter water enters a booster pump 6 through a water inlet valve 5; the water outlet end of the booster pump 6 is divided into two paths, one path is communicated with the water inlet end of the first RO membrane filter element 42, and the other path is communicated with the water inlet end of the second RO membrane filter element 7; the booster pump 6 pumps the primary filter water into the first RO membrane filter element 42 or the second RO membrane filter element 7, and the first RO membrane filter element 42 or the second RO membrane filter element 7 carries out reverse osmosis filtration; the first RO membrane filter element 42 and the second RO membrane filter element 7 can filter the primary filtered water into pure water, the pure water outlet ends of the first RO membrane filter element 42 and the second RO membrane filter element 7 are respectively communicated with the pure water port 2, and the pure water is discharged out of the large-flux filtering system through the pure water port 2; and the waste water generated by the filtration of the second RO membrane cartridge 7 is discharged through the waste water port 3.

Specifically, the waste water end of the first RO membrane cartridge 42 is in one-way communication with the water inlet end of the pre-filter cartridge 41. Adopt above-mentioned structure, the waste water that first RO membrane filter element 42 filtered the production mixes with the raw water, gets into leading filter core 41 again and filters, make full use of the waste water that first RO membrane filter element 42 produced, reduce the proportion between waste water and the pure water, reduce the production of waste water, reach the purpose of using water wisely. Waste water can only get into from the end of intaking of leading filter core 41, and the initial drainage can't be through the end of intaking of leading filter core 41 and waste water round, avoids taking place the problem of running water. Furthermore, the first RO membrane cartridge 42 does not discharge waste water, and the loss of water pressure in the first RO membrane cartridge 42 can be avoided.

In particular, the composite filter element 4 further comprises a filter cover 43 and a casing 44; the pre-filter cartridge 41 and the first RO membrane cartridge 42 are disposed in a housing 44, and the filter cover 43 is detachably connected to the housing 44;

the filter cover 43 is provided with a raw water inlet 431, a primary filtered water outlet 432, a primary filtered water inlet 433 and a pure water outlet 434;

the filter cover 43 is provided with a first chamber 435, a second chamber 436, a third chamber 437 and a fourth chamber 438 which are not communicated with each other, and the first chamber 435, the second chamber 436, the third chamber 437 and the fourth chamber 438 are respectively arranged in a ring shape; the first chamber 435 surrounds the second chamber 436, the second chamber 436 surrounds the third chamber 437, and the third chamber 437 surrounds the fourth chamber 438;

the first chamber 435 is respectively communicated with the raw water inlet 431 and the water inlet end of the front filter element 41; the second chamber 436 is respectively communicated with the initial filtered water outlet 432 and the water outlet end of the pre-filter element 41, the third chamber is respectively communicated with the initial filtered water inlet 433 and the water inlet end of the first RO membrane filter element 42, and the fourth chamber is respectively communicated with the pure water outlet 434 and the pure water outlet end of the first RO membrane filter element 42;

the waste water outlet end of the first RO membrane cartridge 42 is in one-way communication with the first chamber 435.

Leading filter core 41 and first RO membrane filter core 42 make up into composite filter core 4, can practice thrift the space, make water purification system's water route arrange more succinctly. The specific structure of the composite filter element 4 can refer to fig. 2-4, and the arrow indicates the water flow direction.

The first chamber 435, the second chamber 436, the third chamber 437 and the fourth chamber 438 are not communicated with each other, and raw water enters the first chamber 435 from a water inlet and then enters the pre-filter element 41 for filtration; and the primary filtered water exits the pre-filter cartridge 41 and enters the second chamber 436 and is subsequently discharged through the primary filtered water outlet 432; one part of the primary filter water is pressurized by a booster pump 6 and pumped to the second RO membrane filter element 7 for reverse osmosis filtration, and the other part of the primary filter water is pressurized by the booster pump 6 and pumped back to the first RO membrane filter element 42 for reverse osmosis filtration; the pure water produced by the filtration in the first RO membrane cartridge 42 is discharged to the fourth chamber section and from the pure water outlet 434, the composite cartridge 4.

Alternatively, the booster pump 6 has a flux of 800 gallons per hour, the first RO membrane filter cartridge 42 has a flux of 300 gallons per hour, and the second RO membrane filter cartridge 7 has a flux of 700 gallons per hour.

The first RO membrane filter cartridge 42 flux was 300 gallons per hour and the second RO membrane filter cartridge 7 flux was 700 gallons per hour, with the total flux of the large flux filtration system being 1000 gallons per hour due to the first RO membrane filter cartridge 42 being in parallel with the second RO membrane filter cartridge 7. Moreover, with the above parallel connection, the flux of the booster pump 6 only needs 800 gallons/hour, and thus the requirements of the first RO membrane cartridge 42 and the second RO membrane cartridge 7 can be met, and at the same time, 1000 gallons/hour of pure water can be produced, and the large-flux filtration system reduces the requirements for the booster pump 6, thereby saving the cost, reducing the volume of the booster pump 6, and saving the space for the large-flux filtration system.

Further, a water path between the pure water outlet end of the second RO membrane filter element 7 and the pure water port is provided with a high-voltage switch 8, and the high-voltage switch 8 is electrically connected with the booster pump 6.

The high-voltage switch 8 is provided with a pressure threshold value, and by adopting the structure, the booster pump 6 can be automatically controlled to be opened or closed according to the water pressure; when the pure water port 2 is closed, the booster pump 6 can continue to work, so that the water pressure between the second RO membrane filter element 7 and the pure water port 2 is gradually increased, and when the pressure is greater than the pressure threshold value of the high-pressure switch 8, the high-pressure switch 8 is closed, so that the booster pump 6 stops working, and the phenomenon that a water path between the pure water outlet end of the second RO membrane filter element 7 and the pure water port 2 is broken due to overlarge pressure is avoided; when pure water mouth 2 was opened, pure water flowed out from pure water mouth 2, and waterway pressure diminishes, and when the water pressure between pure water play water end of second RO membrane filter core 7 and pure water mouth 2 was less than the pressure threshold, high pressure switch 8 opened, started booster pump 6. When the booster pump 6 is operated, the booster pump 6 pumps the primary filtered water to the first RO membrane cartridge 42 or the second RO membrane cartridge 7 for filtration to replenish the pure water, so that the pure water can stably flow out from the pure water port 2.

Furthermore, a first check valve 9 is arranged on a water path between the high-pressure switch 8 and the pure water outlet end of the second RO membrane filter element 7.

The first check valve 9 plays a role in limiting the flow direction of the pure water, prevents the pure water from flowing back to the second RO membrane filter element 7, and avoids the problem that the pure water is polluted.

Specifically, a waste water proportional valve 71 is arranged on a water path between the waste water end of the second RO membrane filter element 7 and the waste water port 3.

Adopt above-mentioned structure, can restrict the discharge velocity of waste water, at the in-process of the 7 discharged waste water of second RO membrane filter core, can hardly influence the pure water outlet yield of second RO membrane filter core 7 to the water purification efficiency of second RO membrane filter core 7 has been improved.

Specifically, a second check valve 10 is arranged on a water path between the water inlet 1 and the pure water outlet end of the first RO membrane filter element 42. The second check valve 10 plays a role in the flow direction of the pure water, prevents the pure water from flowing back to the mixed first RO membrane cartridge 42, and avoids the problem that the pure water is polluted.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Other embodiments of the invention will occur to those skilled in the art without the exercise of inventive faculty based on the explanations herein, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined in the appended claims.

Claims

1. The utility model provides a big flux filtration system, big flux filtration system is equipped with water inlet, pure water mouth and waste water mouth, its characterized in that: the large-flux filtering system comprises a composite filter element, a water inlet valve, a booster pump and a second RO membrane filter element;

2. A high flux filtration system as claimed in claim 1 wherein: the waste water end of the first RO membrane filter element is communicated with the water inlet end of the front filter element in a one-way mode.

3. A high flux filtration system as claimed in claim 1 wherein: the composite filter element also comprises a filter cover and a shell; the preposed filter element and the first RO membrane filter element are arranged in the shell, and the filter cover is detachably connected with the shell;

4. A high flux filtration system as claimed in claim 1 wherein: the booster pump flux was 800 gallons per hour, the first RO membrane cartridge flux was 300 gallons per hour, and the second RO membrane cartridge flux was 700 gallons per hour.

5. A high flux filtration system as claimed in claim 1 wherein: and a water path between the pure water outlet end of the second RO membrane filter element and the pure water port is provided with a high-voltage switch, and the high-voltage switch is electrically connected with the booster pump.

6. A high flux filtration system according to claim 5 wherein: and a first check valve is arranged on a water path between the high-pressure switch and the pure water outlet end of the second RO membrane filter element.

7. A high flux filtration system as claimed in claim 1 wherein: and a wastewater proportional valve is arranged on a water path between the wastewater end of the second RO membrane filter element and the wastewater port.

8. A high flux filtration system as claimed in claim 1 wherein: and a second check valve is arranged on a water path between the water inlet and the pure water outlet end of the first RO membrane filter element.