Water purification system and water purifier

Abstract

The utility model relates to the technical field of water purification equipment, in particular to a water purification system and a water purifier. The water purification system comprises a water inlet pipeline, a pure water pipeline, a concentrated water pipeline, a membrane filter element and a sealed container, one end of the water inlet pipeline is communicated with the water inlet, one end of the concentrated water pipeline is communicated with the concentrated water opening, the sealed container and the pure water pipeline are both communicated with the pure water opening, and when the pure water pipeline is switched from opening to closing, the water purification system continues to work for preset time; and pure water generated by the membrane filter element enters the sealed container through the pure water port. The compressed air in the sealed container pushes out the pure water in the sealed container, the pure water permeates through a membrane of the membrane filter element under the action of pressure, enters the concentrated water side and extrudes out the concentrated water, and the problems that in the standing process after water making of an RO water purifier in the prior art, the concentration of calcium and magnesium ions measured by the concentrated water of an RO membrane is very high, and the calcium and magnesium ions are easily crystallized and precipitated to be attached to the membrane surface, so that the water purification effect is poor are solved. Therefore, the water production capacity of the RO water purifier is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, in particular to a water purification system and a water purifier. Background Art

[0002] As living standards improve, people are increasingly concerned about water quality and hygiene, and equipping households with water purification equipment has become a trend. A water purifier, also known as a water purifier or water purifier, is a water treatment device that deeply filters and purifies water according to specific usage requirements. Its core technology lies in the filtration membrane within the filter element, primarily derived from three technologies: ultrafiltration, RO (reverse osmosis), and nanofiltration. After a conventional RO water purifier produces water, the high concentrations of calcium and magnesium ions in the concentrated water of the RO membrane easily crystallize and precipitate, adhering to the membrane surface. This precipitated scale, covering the membrane surface, affects the membrane's water production capacity, resulting in a decrease in the purifier's water production capacity. Utility Model Content

[0003] In view of this, the present invention provides a water purification system and a water purifier, which are used to solve the problem in the prior art that during the static process after water production, the calcium and magnesium ion concentrations measured in the RO membrane concentrated water of the RO water purifier are very high, which are easily crystallized and precipitated and attached to the membrane surface, resulting in a decrease in the water production capacity of the RO water purifier.

[0004] In order to achieve one or part or all of the above-mentioned purposes or other purposes, the utility model proposes a water purification system, including a water inlet pipeline, a pure water pipeline, a concentrated water pipeline, a membrane filter element and a sealed container, the membrane filter element having a water inlet, a pure water outlet and a concentrated water outlet, one end of the water inlet pipeline is connected to the water inlet, one end of the concentrated water pipeline is connected to the concentrated water outlet, the sealed container and the pure water pipeline are both connected to the pure water outlet, when the pure water pipeline is switched from open to closed, the water purification system continues to work for a preset time, and the pure water generated by the membrane filter element enters the sealed container through its pure water outlet.

[0005] Preferably, the membrane filter element includes a filter element housing, a membrane element, an upper end cover, a lower end cover and a concentrate check valve; the water inlet, the pure water inlet and the concentrate inlet are arranged on the filter element housing; the central tube of the membrane element is sealed and connected to the filter element housing and is communicated with the pure water inlet; the upper end cover is arranged on the upper end of the membrane element and forms a raw water channel; the raw water channel is communicated with the water inlet; the lower end cover is arranged on the lower end of the membrane element to form a first channel; the outer side wall of the membrane element and the inner side wall of the filter element housing form a second channel; the first channel and the second channel form a concentrate channel; the concentrate channel is communicated with the concentrate inlet; the concentrate check valve is arranged in the lower end cover to separate the first channel from the second channel.

[0006] Preferably, the upper end of the center tube is an open end and protrudes, the lower end of the center tube is a closed end, the upper inner wall of the filter element housing is provided with a first connecting port, the first connecting port is connected to the pure water port, and the outer side wall of the open end is sealed with the inner side wall of the first connecting port.

[0007] Preferably, the upper end cover is provided with an upper cover opening, the upper inner wall of the filter element housing is provided with a second connection port, the second connection port is connected to the water inlet, the first connection port is located inside the second connection port, and the outer side wall of the upper cover opening is connected to the inner side wall of the second connection port.

[0008] Preferably, the lower end cover is provided with a lower cover opening, the first channel is formed by the closed end, the lower end portion of the membrane element and the inner side wall of the lower end cover, the concentrated water check valve is provided at the lower cover opening, and the second channel is formed by the outer side wall of the membrane element, the inner side wall of the filter element housing, the outer side wall of the upper end cover and the outer side wall of the lower end cover.

[0009] Preferably, the sealed container is an air bottle.

[0010] Preferably, the sealed container includes an air bag bottle and an air bag, the air bag bottle is connected to the pure water inlet, a preset amount of gas is filled in the air bag, and the air bag is placed in the air bag bottle.

[0011] Preferably, the water inlet pipeline includes a first pipe, a first solenoid valve and a booster pump, one end of the first pipe is connected to the water inlet, and the first solenoid valve and the booster pump are both arranged in the first pipe.

[0012] Preferably, the pure water pipeline includes a pure water pipe and a second solenoid valve, one end of the pure water pipe is connected to the pure water port, the second solenoid valve is arranged on the pure water pipe, the pure water pipe is provided with a branch port, the branch port is located between the pure water port and the second solenoid valve, and the sealed container is connected to the branch port.

[0013] The utility model also provides a water purifier, comprising the above-mentioned water purification system.

[0014] The implementation of the present invention will have the following beneficial effects:

[0015] After adopting the above-mentioned water purification system and water purifier, when the user closes the drinking water outlet, the pure water pipeline is closed, and the water purification system continues to produce water. The pressure in the pure water pipeline increases, the pure water will enter the sealed container, and the air inside the sealed container will be compressed; when the water purification system stops producing water, the compressed air in the sealed container will push out the pure water inside the sealed container. Under the action of pressure, the pure water will penetrate the membrane of the membrane filter element and enter the concentrated water side, squeezing out the concentrated water, thereby greatly reducing the TDS on the concentrated water side and reducing the calcium and magnesium ion concentrations on the concentrated water side, solving the problem in the prior art that during the static process after water production, the calcium and magnesium ion concentrations of the RO membrane concentrated water of the RO water purifier are very high, which are easy to crystallize and precipitate and adhere to the membrane surface, resulting in a decrease in the water production capacity of the RO water purifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] in:

[0018] Figure 1 This is a schematic structural diagram of a water purification system in one embodiment of the present utility model;

[0019] Figure 2 A schematic cross-sectional view of a membrane filter element in an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of the water flow direction of a membrane filter element in an embodiment of the present invention;

[0021] Figure 4 This is a structural diagram of a water purification system in another embodiment of the present utility model.

[0022] Description of reference numerals:

[0023] Water inlet pipeline 1, first pipeline 11, first solenoid valve 12, booster pump 13, pure water pipeline 2, concentrated water pipeline 3, membrane filter element 4, central tube 41, connecting port 411, filter element housing 42, water inlet 421, pure water port 422, concentrated water port 423, first connecting port 424, second connecting port 425, membrane element 43, upper end cover 44, lower end cover 45, concentrated water check valve 46, raw water channel 47, pure water channel 48, first channel 491, second channel 492, sealed container 5, airbag bottle 51, airbag 52. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 therefore should not be understood as a limitation to the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include at least one of these features.

[0027] Example 1

[0028] like Figures 1 to 4 As shown, an embodiment of the present utility model discloses a water purification system, including a water inlet pipeline 1, a pure water pipeline 2, a concentrated water pipeline 3, a membrane filter element 4 and a sealed container 5, the membrane filter element 4 having a water inlet 421, a pure water outlet 422 and a concentrated water outlet 423, one end of the water inlet pipeline 1 is connected to the water inlet 421, one end of the concentrated water pipeline 3 is connected to the concentrated water outlet 423, the sealed container 5 and the pure water pipeline 2 are both connected to the pure water outlet 422, when the pure water pipeline 2 is switched from open to closed, the water purification system continues to work for a preset time, and the pure water generated by the membrane filter element 4 enters the sealed container 5 through its pure water outlet 422.

[0029] When the user closes the drinking water outlet, the pure water pipeline 2 is closed, and the water purification system continues to produce water. The pressure in the pure water pipeline 2 increases, and the pure water enters the sealed container 5, and the air inside the sealed container 5 is compressed.

[0030] When the water purification system stops producing water, the compressed air in the sealed container 5 will push the pure water inside the sealed container 5 out. The pure water will penetrate the membrane of the membrane filter element 4 under the action of pressure and enter the concentrated water side, squeezing out the concentrated water, thereby greatly reducing the TDS on the concentrated water side and reducing the calcium and magnesium ion concentrations on the concentrated water side. This solves the problem in the prior art that during the static process after water production, the calcium and magnesium ion concentrations measured in the concentrated water of the RO membrane are very high, which are easily crystallized and precipitated and attached to the membrane surface, resulting in a decrease in the water production capacity of the RO water purifier.

[0031] In this embodiment, the membrane filter element 4 includes a filter element housing 42, a membrane element 43, an upper end cover 44, a lower end cover 45 and a concentrated water check valve 46. The water inlet 421, the pure water port 422 and the concentrated water port 423 are provided on the filter element housing 42. The central tube 41 of the membrane element 43 is sealed and connected to the filter element housing 42 and communicates with the pure water port 422. The upper end cover 44 is provided on the upper end of the membrane element 43 to form a raw water channel 47. The raw water channel 47 is connected to the concentrated water port 423. The water inlet 421 is connected, and the lower end cover 45 is covered on the lower end of the membrane element 43 to form a first channel 491. The outer wall of the membrane element 43 and the inner wall of the filter element housing 42 form a second channel 492. The first channel 491 and the second channel 492 form a concentrated water channel, and the concentrated water channel is connected to the concentrated water port 423. The concentrated water check valve 46 is provided in the lower end cover 45 to separate the first channel 491 and the second channel 492.

[0032] The water inlet pipe 1 enters the raw water channel 47 through the water inlet 421. Under the action of the membrane element 43, the prepared pure water enters the pure water channel 48 through the connecting port 411, and the prepared concentrated water enters the first channel 491. The concentrated water then flows to the second channel 492 through the concentrated water check valve 46, and then flows out through the concentrated water port 423. The action of the concentrated water check valve 46 can prevent the concentrated water in the second channel 492 from flowing back to the first channel 491.

[0033] In this embodiment, the upper end of the central tube 41 is open and protrudes, while the lower end of the central tube 41 is closed. The upper inner sidewall of the filter element housing 42 is provided with a first connection port 424, which communicates with the pure water port 422. The outer sidewall of the open end is sealedly connected to the inner sidewall of the first connection port 424. The protrusion of the central tube 41 facilitates a sealed connection with the first connection port 424, preventing pure water in the central tube 41 from leaking through the connection.

[0034] In this embodiment, the upper end cap 44 is provided with an upper cover opening, and the upper inner sidewall of the filter cartridge housing 42 is provided with a second connection opening 425. The second connection opening 425 is in communication with the water inlet 421. The first connection opening 424 is located within the second connection opening 425, and the outer sidewall of the upper cover opening is connected to the inner sidewall of the second connection opening 425. The first connection opening 424 is located within the second connection opening 425, so that the protruding portion of the central tube 41 is located within the raw water channel 47, effectively reducing the overall volume of the membrane filter cartridge 4.

[0035] In this embodiment, the lower end cap 45 has a lower cover opening. The first channel 491 is formed by the closed end, the lower end of the membrane element 43, and the inner sidewall of the lower end cap 45. The concentrate check valve 46 is located in the lower cover opening. The second channel 492 is formed by the outer sidewall of the membrane element 43, the inner sidewall of the filter cartridge housing 42, the outer sidewall of the upper end cap 44, and the outer sidewall of the lower end cap 45. The concentrate check valve 46 is installed in the lower cover opening. The function of the concentrate check valve 46 is to separate the concentrate within the membrane element 43 from the concentrate between the membrane element 43 and the filter cartridge housing 42.

[0036] In this embodiment, the sealed container 5 is an air bottle.

[0037] In some embodiments, the sealed container 5 includes an airbag bottle 51 and an airbag 52. The airbag bottle 51 is connected to the pure water inlet 422. The airbag 52 is filled with a preset amount of gas and is placed within the airbag bottle 51. When the pure water pipeline 2 is closed and the water purification system continues to operate, pure water enters the airbag bottle 51 and squeezes the airbag 52. When the water purification system stops operating, the airbag 52 inflates, squeezing the pure water out of the airbag bottle 51. The gas in the airbag bottle 51 is separated from the pure water, preventing the problem of air dissolving in the pure water when the air bottle is in operation for a long time.

[0038] In this embodiment, the water inlet pipeline 1 includes a first pipe 11, a first solenoid valve 12, and a booster pump 13. One end of the first pipe 11 is connected to the water inlet 421, and the first solenoid valve 12 and the booster pump 13 are both located in the first pipe 11. The other end of the first pipe 11 is connected to tap water. The first solenoid valve 12 opens or closes the water inlet pipeline 1 to the membrane filter element 4, and the booster pump 13 increases the water pressure of the water entering the membrane filter element 4, allowing the membrane filter element 4 to produce pure water at normal operating pressure.

[0039] In this embodiment, the pure water pipeline 2 includes a pure water pipeline and a second solenoid valve. One end of the pure water pipeline is connected to the pure water inlet 422. The second solenoid valve is provided in the pure water pipeline. The pure water pipeline has a branch port located between the pure water inlet 422 and the second solenoid valve. The sealed container 5 is connected to the branch port. The sealed container 5 is connected to the pure water inlet 422 via the branch port on the pure water pipeline.

[0040] Example 2

[0041] like Figures 1 to 4 As shown, an embodiment of the present invention further discloses a water purifier, including the above-mentioned water purification system. The water purification system includes a water inlet pipeline 1, a pure water pipeline 2, a concentrate water pipeline 3, a membrane filter element 4, and a sealed container 5. The membrane filter element 4 has a water inlet 421, a pure water outlet 422, and a concentrate water outlet 423. One end of the water inlet pipeline 1 is connected to the water inlet 421, one end of the concentrate water pipeline 3 is connected to the concentrate water outlet 423, and the sealed container 5 and the pure water pipeline 2 are both connected to the pure water outlet 422. When the pure water pipeline 2 is switched from open to closed, the water purification system continues to operate for a preset time, and the pure water produced by the membrane filter element 4 enters the sealed container 5 through its pure water outlet 422.

[0042] When the user closes the drinking water outlet, the pure water pipeline 2 is closed, and the water purification system continues to produce water. The pressure in the pure water pipeline 2 increases, and the pure water will enter the sealed container 5, and the air inside the sealed container 5 will be compressed; when the water purification system stops producing water, the compressed air in the sealed container 5 will push the pure water inside the sealed container 5 out, and the pure water will penetrate the membrane of the membrane filter element 4 under the action of pressure and enter the concentrated water side, squeezing out the concentrated water, thereby greatly reducing the TDS on the concentrated water side and reducing the calcium and magnesium ion concentrations on the concentrated water side, solving the problem in the prior art that during the static process after water production, the calcium and magnesium ion concentrations of the RO membrane concentrated water of the RO water purifier are very high, and are easily crystallized and precipitated and attached to the membrane surface, resulting in a decrease in the water production capacity of the RO water purifier.

[0043] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A water purification system, characterized in that: It includes a water inlet pipeline, a pure water pipeline, a concentrated water pipeline, a membrane filter element and a sealed container. The membrane filter element has a water inlet, a pure water outlet and a concentrated water outlet. One end of the water inlet pipeline is connected to the water inlet, and one end of the concentrated water pipeline is connected to the concentrated water outlet. The sealed container and the pure water pipeline are both connected to the pure water outlet. When the pure water pipeline is switched from on to off, the water purification system continues to work for a preset time, and the pure water produced by the membrane filter element enters the sealed container through its pure water outlet.

2. The water purification system according to claim 1, wherein: The membrane filter element includes a filter element housing, a membrane element, an upper end cover, a lower end cover and a concentrated water check valve. The water inlet, the pure water port and the concentrated water port are arranged on the filter element housing. The central tube of the membrane element is sealed and connected to the filter element housing and is communicated with the pure water port. The upper end cover is arranged on the upper end of the membrane element and forms a raw water channel. The raw water channel is communicated with the water inlet. The lower end cover is arranged on the lower end of the membrane element to form a first channel. The outer wall of the membrane element and the inner wall of the filter element housing form a second channel. The first channel and the second channel form a concentrated water channel. The concentrated water channel is communicated with the concentrated water port. The concentrated water check valve is arranged in the lower end cover to separate the first channel from the second channel.

3. The water purification system according to claim 2, wherein: The upper end of the central tube is an open end and protrudes, the lower end of the central tube is a closed end, the upper inner wall of the filter element housing is provided with a first connecting port, the first connecting port is connected to the pure water port, and the outer side wall of the open end is sealed with the inner side wall of the first connecting port.

4. The water purification system according to claim 3, wherein: The upper end cover is provided with an upper cover opening, the upper inner wall of the filter element housing is provided with a second connecting port, the second connecting port is connected to the water inlet, the first connecting port is located inside the second connecting port, and the outer side wall of the upper cover opening is connected to the inner side wall of the second connecting port.

5. The water purification system according to claim 4, characterized in that: The lower end cover is provided with a lower cover opening, the first channel is formed by the closed end, the lower end portion of the membrane element and the inner side wall of the lower end cover, the concentrated water check valve is provided at the lower cover opening, and the second channel is formed by the outer side wall of the membrane element, the inner side wall of the filter element housing, the outer side wall of the upper end cover and the outer side wall of the lower end cover.

6. The water purification system according to claim 1, wherein: The sealed container is an air bottle.

7. The water purification system according to claim 1, wherein: The sealed container includes an air bag bottle and an air bag. The air bag bottle is connected to the pure water port. A preset amount of gas is filled in the air bag, and the air bag is placed in the air bag bottle.

8. The water purification system according to claim 1, wherein: The water inlet pipeline includes a first pipe, a first solenoid valve and a booster pump. One end of the first pipe is connected to the water inlet. The first solenoid valve and the booster pump are both arranged in the first pipe.

9. The water purification system according to claim 1, wherein: The pure water pipeline includes a pure water pipe and a second solenoid valve, one end of the pure water pipe is connected to the pure water port, the second solenoid valve is arranged on the pure water pipe, the pure water pipe is provided with a branch port, the branch port is located between the pure water port and the second solenoid valve, and the sealed container is connected to the branch port.

10. A water purifier, characterized in that: Comprising a water purification system as described in any one of claims 1-9.

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