CN218709433U - Reverse osmosis membrane filter core and purifier - Google Patents

Abstract

The utility model relates to a water purification unit technical field discloses a reverse osmosis membrane filter core and purifier. The reverse osmosis membrane filter core includes shell body and filtering component, and filtering component is provided with first check valve including setting up the center tube in the shell body and around the reverse osmosis membrane that center tube circumference was arranged in the center tube, and first check valve is configured to open under the water pressure effect of pure water when shutting down the back flush to end of intaking with pure water conservancy diversion to reverse osmosis membrane. The utility model discloses having guaranteed the drinking water quality, can thoroughly having solved the high TDS value problem of first cup of water, simple structure is reliable, need not special water storage tank and stores the pure water, need not complicated back flush pipeline and solenoid valve control, shuts down the required pure water volume of back flush at every turn and is few, and is efficient, saves the water resource, and is with low costs, need not the first cup of water discharge of waiting for high TDS value when receiving water once more, has improved user's use and has experienced.

Description

Reverse osmosis membrane filter core and purifier

Technical Field

The utility model relates to a water purification unit technical field especially relates to a reverse osmosis membrane filter core and purifier.

Background

With the society paying more and more attention to the safety of drinking water, the reverse osmosis water purifier gradually becomes an indispensable household appliance product for families. When the reverse osmosis water purifier produces water, under the action of external pressure, water molecules penetrate through the membrane and enter the pure water side, and salt ions and the like are trapped on the concentrated water side. When the water faucet is closed during standing, the pure water side is sealed, pure water on the pure water side cannot permeate back to the concentrated water side, and salt ions and the like slowly diffuse to the pure water side, so that the Total Dissolved Solids (TDS) on the pure water side is increased. When reused, pure water with high TDS value is discharged, which can affect the drinking water health of people.

SUMMERY OF THE UTILITY MODEL

Based on the above problems, an object of the utility model is to provide a reverse osmosis membrane filter core and purifier can guarantee the drinking water quality.

In order to realize the purpose, the following technical scheme is provided:

in a first aspect, the present invention provides a reverse osmosis membrane filter element, comprising:

an outer housing;

the filter assembly comprises a central pipe arranged in the outer shell and a reverse osmosis membrane circumferentially arranged around the central pipe, and a first one-way valve is arranged in the central pipe;

the first one-way valve is configured to open under the hydraulic pressure of the pure water during shutdown backwashing so as to guide the pure water to the water inlet end of the reverse osmosis membrane.

As the utility model provides an alternative of reverse osmosis membrane filter core, still including set up in installation end cover in the shell body, reverse osmosis membrane intake the end with the installation end cover is connected, be provided with the transition district in the installation end cover, be formed with the pure water district in the center tube, first check valve is configured to open under the water pressure effect of pure water when shutting down the back flush, in order to switch on the pure water district with the transition district.

As the utility model provides an alternative of reverse osmosis membrane filter core, first check valve is in the closed condition when being configured into system water, in order to keep apart pure water district with the transition district.

As the utility model provides an alternative of reverse osmosis membrane filter core, be provided with the limbers on the lateral wall of center tube, the pure water via after reverse osmosis membrane filters the limbers gets into pure water district.

As the utility model provides an alternative of reverse osmosis membrane filter core, be provided with the pure water delivery port on the shell body, the pure water district with the pure water delivery port intercommunication.

As an alternative of the reverse osmosis membrane filter element provided by the utility model, a second one-way valve is arranged on the mounting end cover, and an original water area is formed between the outer shell and the reverse osmosis membrane; the second one-way valve is configured to be in a closed state during shutdown backwashing so as to isolate the transition zone from the raw water zone.

As the utility model provides an alternative of reverse osmosis membrane filter core, the second check valve is configured to open under the water pressure effect of raw water when making water, in order to switch on the transition district with raw water district.

As the utility model provides an alternative of reverse osmosis membrane filter core, be provided with the raw water inlet on the shell body, the former water district with raw water inlet intercommunication.

As the utility model provides an alternative of reverse osmosis membrane filter core, still including set up in installing support in the shell body, reverse osmosis membrane's play water end with installing support connects.

As the utility model provides an alternative of reverse osmosis membrane filter core, be provided with the dense water leakage fluid dram on the shell body, reverse osmosis membrane's play water end the installing support and be formed with the dense water district between the shell body, the dense water district with dense water leakage fluid dram intercommunication.

As the utility model provides an alternative of reverse osmosis membrane filter core, the shell body is including dismantling bottle and the bottle lid of connection, filtering component is located in the bottle.

In a second aspect, the utility model also provides a water purifier, including foretell reverse osmosis membrane filter core.

The utility model has the advantages that:

the utility model provides a reverse osmosis membrane filter core and purifier, because set up first check valve in the center tube, when shutting down the back flush, first check valve is opened under the water pressure effect of pure water, to hold the end of intaking with pure water conservancy diversion to reverse osmosis membrane, reverse osmosis membrane goes out the dense water of water end and is all replaced by the pure water, can thoroughly solve the high TDS value problem of first cup of water, the drinking water quality has been guaranteed, moreover, the steam generator is simple in structure and reliable, need not special water storage tank pure water storage, need not complicated back flush pipeline and solenoid valve control, it is few to shut down the required pure water volume of back flush at every turn, high efficiency, water economy, low cost, the first cup of water that need not to wait for high TDS value when receiving water once more discharges, user's use experience has been improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural view of a reverse osmosis membrane filter element provided in an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a reverse osmosis membrane cartridge (during water production) provided in an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a reverse osmosis membrane filter element (during shutdown backwashing) provided by the embodiment of the invention.

In the figure:

1-an outer shell; 2-a filtration module; 3, mounting an end cover; 4, mounting a bracket;

11-a bottle body; 12-a bottle cap;

121-a pure water outlet; 122-raw water inlet; 123-a concentrated water outlet;

21-a central tube; 22-a reverse osmosis membrane;

211-a first one-way valve; 212-water through holes;

31-a second one-way valve;

100-transition zone; 200-pure water area; 300-raw water area; 400-concentrated water zone.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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 of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to 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 or a removable 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 3, the present embodiment provides a reverse osmosis membrane cartridge including an outer case 1 and a filter module 2. The filter assembly 2 comprises a central tube 21 disposed within the outer housing 1 and a reverse osmosis membrane 22 circumferentially arranged around the central tube 21, with a first one-way valve 211 disposed within the central tube 21. The first check valve 211 is configured to open under the hydraulic pressure of the pure water during the shutdown backwash to divert the pure water to the water inlet end of the reverse osmosis membrane 22.

Because set up first check valve 211 in center tube 21, during the back flush of shutting down, first check valve 211 is opened under the water pressure effect of pure water, with the end of intaking with pure water conservancy diversion to reverse osmosis membrane 22, reverse osmosis membrane 22 goes out the dense water of water end and is all replaced by the pure water, can thoroughly solve the high TDS value problem of first cup of water, the drinking water quality has been guaranteed, moreover, the steam generator is simple in structure and reliable, need not special water storage tank and store the pure water, need not complicated back flush pipeline and solenoid valve control, the required pure water volume of back flush of shutting down at every turn is few, high efficiency, save the water resource, therefore, the steam generator is low in cost, need not the first cup of water discharge of waiting for high TDS value when receiving water once more, user's use experience has been improved.

Optionally, the reverse osmosis membrane filter element further comprises a mounting end cover 3 arranged in the outer shell 1, the water inlet end of the reverse osmosis membrane 22 is connected with the mounting end cover 3, a transition area 100 is arranged in the mounting end cover 3, a pure water area 200 is formed in the central tube 21, and the first check valve 211 is configured to be opened under the hydraulic pressure of pure water during shutdown backwashing so as to conduct the pure water area 200 and the transition area 100. When the backwashing is stopped, the first one-way valve 211 is opened under the hydraulic action of the pure water to conduct the pure water area 200 and the transition area 100, the pure water in the pure water area 200 is guided to the transition area 100, namely the water inlet end of the reverse osmosis membrane 22, and the concentrated water at the water outlet end of the reverse osmosis membrane 22 is completely replaced by the pure water, so that the problem of high TDS value of the first cup of water can be thoroughly solved.

Optionally, the first one-way valve 211 is configured to be closed when water is produced to isolate the plain water zone 200 from the transition zone 100. First check valve 211 is in the closed condition during system water to keep apart pure water district 200 and transition district 100, avoid the raw water in transition district 100 to mix with the pure water in pure water district 200, guaranteed the drinking water quality.

Optionally, a water through hole 212 is formed in the side wall of the central pipe 21, and pure water filtered by the reverse osmosis membrane 22 enters the pure water region 200 through the water through hole 212. The plurality of water passage holes 212 are provided along the circumferential direction of the center pipe 21, and the plurality of water passage holes 212 are provided at intervals in the axial direction of the center pipe 21 to improve water passage efficiency. When water is produced, the first one-way valve 211 is in a closed state to isolate the pure water area 200 from the transition area 100, raw water in the transition area 100 cannot directly flow into the pure water area 200 through the limber hole 212 and the first one-way valve 211, and the raw water can only be filtered by the reverse osmosis membrane 22 to form pure water and then enters the pure water area 200 through the limber hole 212. When the machine is stopped for backwashing, the first one-way valve 211 is opened under the hydraulic pressure of the pure water to conduct the pure water area 200 and the transition area 100, and the pure water in the pure water area 200 is guided to the transition area 100, namely the water inlet end of the reverse osmosis membrane 22, through the water through hole 212.

Optionally, a pure water outlet 121 is provided on the outer casing 1, and the pure water region 200 is communicated with the pure water outlet 121. When water is produced, pure water in the pure water area 200 is discharged through the pure water outlet 121 and can be drunk by a user. When the machine is stopped for backwashing, external pure water enters the pure water area 200 through the pure water outlet 121, the first check valve 211 is opened under the hydraulic pressure of the pure water to conduct the pure water area 200 and the transition area 100, and the pure water in the pure water area 200 is guided to the transition area 100, namely the water inlet end of the reverse osmosis membrane 22, through the water through hole 212. The pure water area 200 and the pure water outlet 121 can be directly or indirectly communicated, and the outer shell 1 is provided with corresponding pure water channels respectively communicated with the pure water outlet 121 and the pure water area 200.

Optionally, a second one-way valve 31 is arranged on the mounting end cover 3, and a raw water area 300 is formed between the outer shell 1 and the reverse osmosis membrane 22; the second check valve 31 is configured to be in a closed state at the time of shutdown backwashing to isolate the transition zone 100 and the raw water zone 300. During shutdown backwashing, external pure water enters the pure water area 200 through the pure water outlet 121, the first one-way valve 211 is opened under the hydraulic action of the pure water to conduct the pure water area 200 and the transition area 100, the second one-way valve 31 is closed to isolate the transition area 100 from the raw water area 300, the pure water in the pure water area 200 is guided to the transition area 100 through the water through hole 212, namely the water inlet end of the reverse osmosis membrane 22, the pure water in the transition area 100 cannot enter the raw water area 300 and can completely enter the water inlet end of the reverse osmosis membrane 22 to backwash the reverse osmosis membrane 22, all the concentrated water at the water outlet end of the reverse osmosis membrane 22 is replaced by the pure water, the problem of high TDS value of the first cup of water can be thoroughly solved, a special water storage tank is not needed to store the pure water, complicated backwashing pipeline and electromagnetic valve control are not needed, the quantity of the pure water required during each shutdown backwashing is small, the efficiency is high, the water resource is saved, the cost is low, the first cup of the high TDS value is not needed to be discharged during water receiving water again, and the user experience is improved.

Alternatively, the second check valve 31 is configured to be opened by the water pressure of the raw water when producing water to conduct the transition zone 100 and the raw water zone 300. When water is produced, the first one-way valve 211 is in a closed state to isolate the pure water area 200 from the transition area 100, the second one-way valve 31 is opened under the action of the water pressure of raw water to conduct the transition area 100 and the raw water area 300, the raw water in the raw water area 300 enters the water inlet end of the reverse osmosis membrane 22 through the transition area 100, and the pure water filtered by the reverse osmosis membrane 22 enters the pure water area 200 through the limber hole 212.

Optionally, a raw water inlet 122 is provided on the outer housing 1, and the raw water zone 300 is communicated with the raw water inlet 122. The external raw water is introduced into the raw water zone 300 through the raw water inlet 122, the raw water zone 300 and the raw water outlet may be directly or indirectly communicated, and the outer shell 1 is provided with corresponding raw water passages respectively communicating the raw water outlet and the raw water zone 300.

In order to facilitate installation of the reverse osmosis membrane 22, the reverse osmosis membrane filter cartridge optionally further comprises a mounting bracket 4 disposed in the outer shell 1, and a water outlet end of the reverse osmosis membrane 22 is connected to the mounting bracket 4. In this embodiment, the mounting bracket 4 is located above the mounting end cap 3, and the reverse osmosis membrane filter element is vertically placed, so as to prevent water from flowing along a specified path under the action of gravity.

Optionally, a concentrate discharge port 123 is formed on the outer shell 1, a concentrate region 400 is formed between the water outlet end of the reverse osmosis membrane 22, the mounting bracket 4 and the outer shell 1, and the concentrate region 400 is communicated with the concentrate discharge port 123. The concentrated water area 400 and the concentrated water discharge port 123 can be directly or indirectly communicated, and corresponding concentrated water channels are arranged on the outer shell 1 and are respectively communicated with the concentrated water discharge port 123 and the concentrated water area 400. When the reverse osmosis membrane 22 is backwashed, the concentrated water at the water outlet end of the reverse osmosis membrane 22, namely the concentrated water in the concentrated water area 400 is completely replaced by the pure water, and the concentrated water is discharged through the concentrated water discharging port 123, so that the problem of high TDS value of the first cup of water can be thoroughly solved.

To facilitate disassembly and assembly for maintenance, the outer housing 1 optionally includes a body 11 and a cap 12 that are detachably connected, and the filter assembly 2 is located in the body 11. The pure water outlet 121, the raw water inlet 122, and the concentrated water outlet 123 are disposed on the bottle cap 12.

The working process of the reverse osmosis membrane filter element provided by the embodiment is approximately as follows: when water is produced, raw water is introduced into the raw water area 300 through the raw water inlet 122, under the hydraulic action of the raw water, the second one-way valve 31 is opened to conduct the transition area 100 and the raw water area 300, so that the raw water in the raw water area 300 can enter the water inlet end of the reverse osmosis membrane 22 through the transition area 100, the raw water forms pure water and concentrated water under the filtering action of the reverse osmosis membrane 22, the pure water filtered by the reverse osmosis membrane 22 enters the pure water area 200 in the central tube 21 through the water through hole 212 in the central tube 21, the pure water in the pure water area 200 is discharged through the pure water outlet 121 for a user to drink, and as the pressure of the raw water in the transition area 100 is greater than the pressure of the pure water in the pure water area 200, the first one-way valve 211 is in a closed state at the moment to isolate the pure water area 200 from the transition area 100, so that the raw water is prevented from being mixed with the pure water, and the quality of the drinking water is ensured; when the backwashing is stopped, external pure water is introduced into the pure water area 200 through the pure water outlet 121, the first one-way valve 211 is opened under the hydraulic pressure of the pure water to conduct the pure water area 200 and the transition area 100, the pure water in the pure water area 200 is guided to the transition area 100 through the water through hole 212, at the moment, raw water is not introduced into the raw water area 300, the second one-way valve 31 is in a closed state to isolate the transition area 100 from the raw water area 300, the pure water in the transition area 100 cannot enter the raw water area 300 to cause pure water waste, the pure water in the transition area 100 can completely enter the water inlet end of the reverse osmosis membrane 22 to backwash the reverse osmosis membrane 22, the concentrated water at the water outlet end of the reverse osmosis membrane 22 is completely replaced by the pure water, namely the concentrated water in the concentrated water area 400 is discharged through the concentrated water discharge port 123, and the problem of the high TDS value of the first cup water can be thoroughly solved.

This embodiment still provides a purifier, including foretell reverse osmosis membrane filter core, guaranteed the drinking water quality, can thoroughly solve the high TDS value problem of first cup of water, need not special water storage tank and store the pure water, need not complicated back flush pipeline and solenoid valve control, it is few to shut down the required pure water volume of back flush at every turn, and is efficient, saves the water resource, and is with low costs, need not to wait for the first cup of water discharge of high TDS value when the water is taken again, has improved user's use and has experienced.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious modifications, rearrangements and substitutions without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (12)

1. A reverse osmosis membrane filter element, comprising:

an outer casing (1);

a filter assembly (2) comprising a central tube (21) disposed within the outer housing (1) and a reverse osmosis membrane (22) circumferentially arranged around the central tube (21), a first one-way valve (211) being disposed within the central tube (21);

the first one-way valve (211) is configured to open under the hydraulic pressure of the pure water during shutdown backwashing so as to guide the pure water to the water inlet end of the reverse osmosis membrane (22).

2. The reverse osmosis membrane filter element according to claim 1, further comprising a mounting end cover (3) arranged in the outer shell (1), wherein the water inlet end of the reverse osmosis membrane (22) is connected with the mounting end cover (3), a transition area (100) is arranged in the mounting end cover (3), a pure water area (200) is formed in the central tube (21), and the first one-way valve (211) is configured to be opened under the hydraulic pressure of pure water during shutdown backwashing so as to conduct the pure water area (200) and the transition area (100).

3. The reverse osmosis membrane cartridge according to claim 2, wherein the first one-way valve (211) is configured to be closed when producing water to isolate the plain water zone (200) from the transition zone (100).

4. The reverse osmosis membrane cartridge according to claim 2, wherein a water through hole (212) is formed in the side wall of the central tube (21), and pure water filtered by the reverse osmosis membrane (22) enters the pure water zone (200) through the water through hole (212).

5. The reverse osmosis membrane cartridge according to claim 2, wherein the outer housing (1) is provided with a pure water outlet (121), and the pure water zone (200) is in communication with the pure water outlet (121).

6. The reverse osmosis membrane filter element according to claim 2, wherein the mounting end cap (3) is provided with a second one-way valve (31), and a raw water zone (300) is formed between the outer shell (1) and the reverse osmosis membrane (22); the second one-way valve (31) is configured to be in a closed state during shutdown backwashing to isolate the transition zone (100) from the raw water zone (300).

7. The reverse osmosis membrane cartridge according to claim 6, wherein the second one-way valve (31) is configured to open under the hydraulic pressure of raw water in water production to communicate the transition zone (100) with the raw water zone (300).

8. The reverse osmosis membrane cartridge as claimed in claim 6, wherein a raw water inlet (122) is provided in the outer housing (1), and the raw water zone (300) communicates with the raw water inlet (122).

9. The reverse osmosis membrane cartridge of any one of claims 1-8, further comprising a mounting bracket (4) disposed within the outer housing (1), the water outlet end of the reverse osmosis membrane (22) being connected to the mounting bracket (4).

10. The reverse osmosis membrane filter element according to claim 9, characterized in that a concentrate discharge port (123) is formed in the outer housing (1), and a concentrate region (400) is formed among the water outlet end of the reverse osmosis membrane (22), the mounting bracket (4) and the outer housing (1), and the concentrate region (400) is communicated with the concentrate discharge port (123).

11. The reverse osmosis membrane cartridge according to claim 1, wherein the outer housing (1) comprises a bottle body (11) and a bottle cap (12) which are detachably connected, and the filter assembly (2) is located in the bottle body (11).

12. A water purification machine comprising a reverse osmosis membrane cartridge according to any one of claims 1 to 11.

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