CN213977064U - Water purifier - Google Patents

Abstract

The application discloses a water purifier, which comprises a water pump, a first reverse osmosis filter element and a second reverse osmosis filter element; the raw water end of the first reverse osmosis filter element is connected with the water outlet of the water pump through a first connecting structure, the pure water end of the first reverse osmosis filter element is connected with the pure water port, and the concentrated water end of the first reverse osmosis filter element is connected with the waste water port; the raw water end of the second reverse osmosis filter element is connected with the water outlet of the water pump through a second connecting structure, the pure water end of the second reverse osmosis filter element is connected with the pure water port, and the concentrated water end of the second reverse osmosis filter element is connected with the waste water port; wherein, first connection structure is different with the second connection structure for the water pump is different to the water supply mode of first reverse osmosis filter core and second reverse osmosis filter core. Through the mode, an asymmetrical water supply structure can be formed between the water pump and the first reverse osmosis filter element and the second reverse osmosis filter element, so that the small-flux and large-flux water supply mode can be switched conveniently and flexibly, the number of parts can be reduced, the structure of the water purifier is simplified, and the cost is saved.

Description

Water purifier

Technical Field

The application relates to the technical field of water purification, in particular to a water purifier.

Background

At present, in order to improve the water flux of the reverse osmosis water purifier, the water flux is mainly realized by increasing the area of a reverse osmosis membrane coiled film or by connecting a plurality of reverse osmosis filter elements in parallel, and large-flux drainage can be realized by connecting the plurality of reverse osmosis filter elements in parallel.

SUMMERY OF THE UTILITY MODEL

The application mainly provides a water purifier to solve the technical problem that the displacement of the water purifier can not be adjusted.

In order to solve the technical problem, the application adopts a technical scheme that: there is provided a water purifier comprising: a water pump; the raw water end of the first reverse osmosis filter element is connected with the water outlet of the water pump through a first connecting structure, the pure water end of the first reverse osmosis filter element is connected with a pure water port, and the concentrated water end of the first reverse osmosis filter element is connected with a waste water port; the raw water end of the second reverse osmosis filter element is connected with the water outlet of the water pump through a second connecting structure, the pure water end of the second reverse osmosis filter element is connected with the pure water port, and the concentrated water end of the second reverse osmosis filter element is connected with the waste water port; the first connecting structure and the second connecting structure are different, so that the water pump supplies water to the first reverse osmosis filter element and the second reverse osmosis filter element in different modes.

According to an embodiment of the present invention, the first connecting structure includes a first water supply pipeline and a first normally closed solenoid valve, the raw water end of the first reverse osmosis filter element is connected to the water outlet of the water pump through the first water supply pipeline, and the first normally closed solenoid valve is disposed on the first water supply pipeline and is used for controlling the on-off of the first water supply pipeline; the second connection structure comprises a second water supply pipeline, and the raw water end of the second reverse osmosis filter element is directly connected with the water outlet of the water pump through the second water supply pipeline.

According to the utility model discloses an embodiment, first reverse osmosis filter core and/or the pure water end of second reverse osmosis filter core is connected the water inlet of water pump.

According to the utility model discloses an embodiment, the pure water end of second reverse osmosis filter core is connected the water inlet of water pump, the pure water end of second reverse osmosis filter core is connected the former water end of first reverse osmosis filter core, the pure water end of second reverse osmosis filter core is connected the waste water mouth.

According to the utility model discloses an embodiment, the pure water end of second reverse osmosis filter core with be provided with second normally closed solenoid valve and first check valve between the raw water end of first reverse osmosis filter core, first check valve is in the second reverse osmosis filter core arrives switch on in the direction of first reverse osmosis filter core.

According to the utility model discloses an embodiment, the pure water end of second reverse osmosis filter core with be provided with third normally closed solenoid valve and second check valve between the waste water mouth, the second check valve is in the second reverse osmosis filter core arrives switch on between the waste water mouth.

According to the utility model discloses an embodiment, the concentrate end of first reverse osmosis filter core with be provided with first waste water solenoid valve between the waste water mouth, the concentrate end of second reverse osmosis filter core with be provided with second waste water solenoid valve between the waste water mouth.

According to the utility model discloses an embodiment, the water pump is the booster pump, the booster pump is the variable pump of power, the booster pump is used for adjusting the water pump is right the water supply power of first reverse osmosis filter core and/or second reverse osmosis filter core.

According to the utility model discloses an embodiment, the purifier includes: the first sensor is connected between the water inlet and the water pump and used for detecting an ion concentration value; and the second sensor is connected between the pure water end of the first reverse osmosis filter element and the pure water end of the second reverse osmosis filter element and the pure water port and is used for detecting an ion concentration value.

According to the utility model discloses an embodiment, the purifier still includes: the preposed reverse osmosis filter element is arranged between the water pump and the water inlet; and the rear reverse osmosis filter element is arranged between the pure water ends of the first reverse osmosis filter element and the second reverse osmosis filter element and the pure water port.

The beneficial effect of this application is: be different from prior art's condition, the embodiment of the utility model provides a water purifier pressurizes the raw water that the water inlet flowed in by the water pump, and the raw water after the pressurization is provided water for first reverse osmosis filter core and second reverse osmosis filter core respectively through first connection structure and second connection structure, and the raw water filters through first reverse osmosis filter core and second reverse osmosis filter core, divide into dense water and pure water, and dense water is discharged through waste water outlet, and the pure water is discharged through the pure water mouth. Through setting up first connection structure and second connection structure difference between first reverse osmosis filter core and the second reverse osmosis filter core and the water pump, can form asymmetric water supply structure between water pump and first reverse osmosis filter core and second reverse osmosis filter core, so, can be convenient for switch over little flux and big flux water supply mode in a flexible way, with the demand that satisfies different users, realize the water supply mode of little flux and big flux simultaneously through a water pump in addition, can reduce the quantity of part, simplify the structure of purifier, and save the cost.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the description of the present application or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts, wherein:

fig. 1 shows a schematic structural diagram of a water purifier in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a water purifier according to another embodiment of the present invention;

fig. 3 is a schematic structural diagram of a water purifier according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a water purifier according to another embodiment of the present invention;

fig. 5 shows a schematic structural diagram of a water purifier in another embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 5 is:

the water purifier comprises a water purifier 100, a water pump 10, a water inlet 11, a first reverse osmosis filter element 21, a first connecting structure 22, a first water supply pipeline 221, a first normally closed electromagnetic valve 223, a second reverse osmosis filter element 23, a second connecting structure 24, a second water supply pipeline 241, a front reverse osmosis filter element 25, a rear reverse osmosis filter element 27, a first sensor 31, a second sensor 33, a third sensor 35, a fourth sensor 37, a pure water port 40, a waste water port 50, a first waste water electromagnetic valve 61, a second waste water electromagnetic valve 62, a second normally closed electromagnetic valve 72, a third normally closed electromagnetic valve 73, a first switch 81, a second switch 82, a third switch 83, a first check valve 91 and a second check valve 92.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in the embodiments of the present application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The present application provides a water purifier 100, as shown in fig. 1, fig. 1 shows a schematic structural diagram of a water purifier in an embodiment of the present invention. Purifier 100 includes water pump 10, first reverse osmosis filter core 21 and second reverse osmosis filter core 23. The raw water end of the first reverse osmosis filter element 21 is connected with the water outlet of the water pump 10 through the first connecting structure 22, the pure water end of the first reverse osmosis filter element 21 is connected with the pure water port 40, and the concentrated water end of the first reverse osmosis filter element 21 is connected with the waste water port 50. The raw water end of the second reverse osmosis filter element 23 is connected with the water outlet of the water pump 10 through the second connecting structure 24, the pure water end of the second reverse osmosis filter element 23 is connected with the pure water port 40, and the concentrated water end of the second reverse osmosis filter element 23 is connected with the waste water port 50. The first connection structure 22 and the second connection structure 24 are different, so that the water pump 10 supplies water to the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 in different manners.

The embodiment of the utility model provides a water purifier 100 is pressurizeed the raw water that water inlet 11 flowed in by water pump 10, and the raw water after the pressurization is supplied water for first reverse osmosis filter core 21 and second reverse osmosis filter core 23 respectively through first connection structure 22 and second connection structure 24, and the raw water filters through first reverse osmosis filter core 21 and second reverse osmosis filter core 23, divide into dense water and pure water, and dense water is discharged through waste water opening 50, and the pure water is discharged through pure water opening 40. Through setting up first connection structure 22 and second connection structure 24 difference between first reverse osmosis filter core 21 and second reverse osmosis filter core 23 and the water pump 10, can form asymmetric water supply structure between water pump 10 and first reverse osmosis filter core 21 and second reverse osmosis filter core 23, thus, can be convenient for switch over little flux and big flux water supply mode in a flexible way, with the demand that satisfies different users, realize the water supply mode of little flux and big flux simultaneously through a water pump 10 in addition, can reduce the quantity of part, simplify the structure of purifier 100, and save the cost.

Specifically, the asymmetric water supply structure formed between the water pump 10 and the first and second reverse osmosis filter elements 21 and 23 means that the types and the arrangement order of the elements disposed between the first reverse osmosis filter element 21 and the water pump 10 are not completely the same as those of the elements disposed between the second reverse osmosis filter element 23 and the water pump 10.

Optionally, in one embodiment, a first waste solenoid valve 61 is disposed between the concentrate end of the first reverse osmosis cartridge 21 and the waste 50, and a second waste solenoid valve 62 is disposed between the concentrate end of the second reverse osmosis cartridge 23 and the waste 50. Wherein, the first wastewater solenoid valve 61 and the second wastewater solenoid valve 62 are both opening-adjustable valves and are provided with drain holes. When first waste water solenoid valve 61 and second waste water solenoid valve 62 are not electrified, utilize the wash port to carry out the pressurize waste water of discharging, when first waste water solenoid valve 61 and second waste water solenoid valve 62 are electrified, the aperture of first waste water solenoid valve 61 and second waste water solenoid valve 62 is opened to the biggest to the waste water of discharging, so, through setting up first waste water solenoid valve 61 and the variable water yield of second waste water solenoid valve 62 exhaust, can guarantee the stability of system.

Alternatively, the water pump 10 may be a booster pump, and may be a variable power pump. Therefore, the power of the water pump 10 supplied to one reverse osmosis filter element or a plurality of reverse osmosis filter elements can be adjusted, and the stability of the system is ensured.

In the present embodiment, the pure water port 40 of the first reverse osmosis filter element 21 and the pure water port 40 of the second reverse osmosis filter element 23 may be shared, or the pure water ports 40 may be provided separately. The waste water mouth 50 of first reverse osmosis filter core 21 and the waste water mouth 50 of second reverse osmosis filter core 23 can share, also can set up corresponding waste water mouth 50 respectively, the embodiment of the utility model provides a do not specifically limit.

In an embodiment, as shown in fig. 1, the first connection structure 22 includes a first water supply pipeline 221 and a first normally closed electromagnetic valve 223, the raw water end of the first reverse osmosis filter element 21 is connected to the water outlet of the water pump 10 through the first water supply pipeline 221, and the first normally closed electromagnetic valve 223 is disposed on the first water supply pipeline 221 and is used for controlling on-off of the first water supply pipeline 221; the second connection structure 24 includes a second water supply pipeline 241, and the raw water end of the second reverse osmosis filter element 23 is directly connected to the water outlet of the water pump 10 through the second water supply pipeline 241.

Specifically, in the present embodiment, when the water purifier 100 is started to produce water, if the first normally closed solenoid valve 223 is not opened by the control system, the water pump 10 only supplies water to the second reverse osmosis filter element 23, so that the second reverse osmosis filter element 23 starts to operate, and pure water generated by the operation of the second reverse osmosis filter element 23 is discharged through the pure water port 40 for use by a user, thereby realizing small-flux water supply. Or, when the water purifier 100 is started to produce water, if the first normally closed solenoid valve 223 is opened by the control system, the water pump 10 simultaneously supplies water to the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23, so that the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 simultaneously produce water, and pure water produced by filtration of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 is simultaneously discharged through the pure water port 40 for use by a user, thereby realizing large-flux water supply.

Alternatively, in other embodiments, the first normally closed solenoid valve 223 may be disposed on the second water supply pipeline 241, and directly connect the first reverse osmosis filter element 21 with the water outlet of the water pump 10, so as to realize flexible switching between the small-flux and large-flux water supply modes.

In other embodiments, the first connection structure may further include a first water supply pipeline and a first valve with an adjustable opening degree, and/or the second connection structure may include a second water supply pipeline and a second valve with an adjustable opening degree, where opening degree adjustment ranges of the first valve and the second valve are different, so as to expand an adjustment range of water flux and achieve continuous change of water flux by adjusting opening degrees of the first valve and the second valve.

Further, in an embodiment, the pure water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23 may be connected to the water inlet 11 of the water pump 10. The pure water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23 is connected with the water inlet 11 of the water pump 10, so that the pure water generated by the pure water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23 can flush and replace the concentrated water in the concentrated water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23, the concentrated water in the concentrated water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23 is discharged through the waste water outlet 50, the ion concentration value of the concentrated water in the concentrated water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23 is reduced, and the situation that the ion concentration value of the concentrated water in the concentrated water end is too high and is transferred to the pure water end to cause pure water pollution and influence on use of a user is avoided.

In an embodiment, the structure and the operation principle of the water purifier 100 in this embodiment are described by taking the example that the pure water end of the first reverse osmosis filter element 21 is connected to the pure water inlet 40, and the pure water end of the second reverse osmosis filter element 23 is connected to the water inlet 11 of the water pump 10.

Specifically, as shown in fig. 2, a first switch 81 is provided between the pure water end of the first reverse osmosis filter element 21 and the pure water port 40, a second switch 82 is provided between the pure water end of the second reverse osmosis filter element 23 and the pure water port 40, and a third switch 83 is provided between the pure water end of the second reverse osmosis filter element 23 and the water inlet 11 of the water pump 10. The first switch 81, the second switch 82, and the third switch 83 may be normally closed solenoid valves, or may be other types of switches. The working mode of the water purifier 100 in this embodiment is as follows:

(1) when a user takes water for the first time, the water inlet 11 supplies raw water, the water pump 10 starts pressurization work at the moment, the first normally closed electromagnetic valve 223 is opened, the first switch 81 and the second switch 82 are opened, the third switch 83 is closed, the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 normally produce water, and pure water produced by the first reverse osmosis filter element 21 passes through the first switch 81 and then is converged with pure water produced by the second reverse osmosis filter element 23 after passing through the second switch 82, and is discharged through the pure water port 40. The concentrated water generated by the first reverse osmosis filter element 21 passes through the first wastewater solenoid valve 61 and then is converged with the concentrated water generated by the second reverse osmosis filter element 23 after passing through the second wastewater solenoid valve 62, and is discharged through the wastewater outlet 50. At this time, the water purifier 100 may initially discharge water normally and take water.

(2) When the user finishes taking water, the first switch 81 and the second switch 82 are turned off, and the pure water is blocked from being discharged from the pure water port 40. Pure water replacement is performed at this time, namely: the water pump 10 continues to operate, the first normally closed solenoid valve 223 is closed, the third switch 83 is opened, the second reverse osmosis filter element 23 normally produces water, pure water produced by filtration of the second reverse osmosis filter element 23 flows back to the water inlet 11 of the water pump 10 through the third switch 83, the pure water is mixed with raw water and then enters the concentrated water end of the second reverse osmosis filter element 23 through the water pump 10, and then the pure water is discharged out of the waste water outlet 50 through the second waste water solenoid valve 62, so that replacement of concentrated water before membrane of the second reverse osmosis filter element 23 is achieved, and therefore the ion concentration value of the pure water of the second reverse osmosis filter element 23 is guaranteed to be low. After the second reverse osmosis filter element 23 is flushed for a period of time, the whole machine is shut down.

Or, in another specific embodiment, the pure water end of the first reverse osmosis filter element 21 can be connected with the water inlet 11 of the water pump 10, and the pure water end of the second reverse osmosis filter element 23 can be connected with the pure water port 40. The working processes of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 are substantially the same as those in the above embodiments, and please refer to the description in the above embodiments, which is not repeated herein.

Or, in another embodiment, the pure water end of the first reverse osmosis filter element 21 may be connected to the water inlet 11 of the water pump 10, and the pure water end of the second reverse osmosis filter element 23 may be connected to the water inlet 11 of the water pump 10, so as to flush the concentrated water end with the pure water generated by the pure water ends of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 at the same time, so as to reduce the ion concentration value at the concentrated water ends of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23.

In the present embodiment, the water purifier 100 includes two reverse osmosis filter elements (the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23), in some other embodiments, the number of the reverse osmosis filter elements may also be three or more, and the pure water ends of the plurality of reverse osmosis filter elements are all or at least partially connected to the water inlet 11 of the water pump 10 to increase the flow rate of the pure water inlet 40.

Further, in another embodiment, as shown in fig. 3, fig. 3 shows a schematic structural diagram of a water purifier in another embodiment of the present invention. The structure of the water purifier 100 in this embodiment is substantially the same as that of the water purifier 100 shown in fig. 2, except that in this embodiment, the pure water end of the second reverse osmosis filter element 23 is further connected to the raw water end of the first reverse osmosis filter element 21.

Specifically, a second normally closed solenoid valve 72 and a first check valve 91 are disposed between the pure water end of the second reverse osmosis filter element 23 and the raw water end of the first reverse osmosis filter element 21, and the first check valve 91 is communicated in the direction from the second reverse osmosis filter element 23 to the first reverse osmosis filter element 21. The setting of first check valve 91 can guarantee that pure water uniflow to realize two-way water seal, avoid taking place the refluence from the water that second reverse osmosis filter core 23 flows out.

Alternatively, in one embodiment, the first check valve 91 is connected between the plain water end of the second reverse osmosis cartridge 23 and the second normally closed solenoid valve 72, and the second normally closed solenoid valve 72 is connected between the second normally closed solenoid valve 72 and the plain water end of the first reverse osmosis cartridge 21.

In another embodiment, the second normally closed electromagnetic valve 72 may be connected between the pure water end of the second reverse osmosis filter element 23 and the first check valve 91, and the first check valve 91 may be connected between the second normally closed electromagnetic valve 72 and the raw water end of the first reverse osmosis filter element 21, as long as the conducting direction of the first check valve 91 is ensured to be unchanged, and the relative positions of the first check valve 91 and the second normally closed electromagnetic valve 72 are not specifically limited in the embodiment of the present application.

Alternatively, in other embodiments, if the second normally closed solenoid valve 72 can perform bidirectional water sealing, and the second normally closed solenoid valve 72 can be opened quickly, that is, the time for the second normally closed solenoid valve 72 to be switched from off to on is less than 1s, the first check valve 91 may not be provided.

The working mode of the water purifier 100 in this embodiment is as follows:

(1) when a user takes water for the first time, the water inlet 11 supplies raw water, at the moment, the water pump 10 starts pressurization work, the first normally closed electromagnetic valve 223 is opened, the second normally closed electromagnetic valve 72 is closed, the first switch 81 and the second switch 82 are opened, the third switch 83 is closed, the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 normally produce water, and pure water produced by the first reverse osmosis filter element 21 passes through the first switch 81 and then joins with pure water produced by the second reverse osmosis filter element 23 after passing through the third switch 83, and is discharged through the pure water port 40. The concentrated water generated by the first reverse osmosis filter element 21 passes through the first wastewater solenoid valve 61 and then is converged with the concentrated water generated by the second reverse osmosis filter element 23 after passing through the second wastewater solenoid valve 62, and is discharged through the wastewater outlet 50. At this time, the water purifier 100 may initially discharge water normally and take water.

(2) When the user finishes taking water, the first switch 81 and the second switch 82 are turned off, and the pure water is blocked from being discharged from the pure water port 40. Pure water replacement is performed at this time, namely: the water pump 10 continues to operate, the first normally closed solenoid valve 223 is closed, the second normally closed solenoid valve 72 is opened, the third switch 83 is closed, the second reverse osmosis filter element 23 normally produces water, pure water produced by filtration of the second reverse osmosis filter element 23 flows into the raw water end of the first reverse osmosis filter element 21 through the first check valve 91 and the second normally closed solenoid valve 72, all the concentrated water at the concentrated water end of the first reverse osmosis filter element 21 is replaced by pure water, and then the pure water is discharged from the wastewater outlet 50 through the first wastewater solenoid valve 61. Thus, after the water purifier 100 works for a period of time, the whole machine is stopped.

Alternatively, in another embodiment, after step (1) is performed, the following step (3) may be further performed, specifically:

in step (3), when the user finishes taking water, the first switch 81 and the second switch 82 are turned off to block the pure water from being discharged from the pure water port 40. Pure water replacement is performed at this time, namely: the water pump 10 continues to operate, the first normally closed electromagnetic valve 223 is closed, the second normally closed electromagnetic valve 72 is closed, the third switch 83 is opened, the second reverse osmosis filter element 23 works normally, pure water generated by the second reverse osmosis filter element 23 flows back to the water inlet 11 of the water pump 10 through the third switch 83, the pure water is mixed with raw water, then, the concentrated water at the concentrated water end of the second reverse osmosis filter element 23 is replaced by mixed water, and then, the mixed water is discharged from the wastewater outlet 50 through the second wastewater electromagnetic valve 62. After the operation is carried out for a period of time, the whole machine is stopped. Thus, after the pure water and the raw water are mixed, the difference in ion concentration between the front and rear of the membrane of the second reverse osmosis filter element 23 can be reduced, and the ion concentration value of the pure water in the pure water end of the second reverse osmosis filter element 23 can be reduced.

One of the steps (2) and (3) may be selected to be performed, or the steps (2) and (3) may be simultaneously performed to flush the water purifier 100, specifically: after the user finishes taking water, the water pump 10 continues to operate, the first normally closed solenoid valve 223 is closed, the second normally closed solenoid valve 72 is opened, the first switch 81, the second switch 82 and the third switch 83 are closed, the second reverse osmosis filter element 23 normally produces water, pure water at the pure water end of the second reverse osmosis filter element 23 flows into the raw water end of the first reverse osmosis filter element 21 through the first check valve 91 and the second normally closed solenoid valve 72, all concentrated water at the concentrated water end of the first reverse osmosis filter element 21 is replaced by pure water, and then the pure water is discharged from the wastewater outlet 50 through the first wastewater solenoid valve 61. When the user takes water again, the first normally closed solenoid valve 223 is opened, the second normally closed solenoid valve 72 is closed, the first switch 81 is opened, the second switch 82 and the third switch 83 are closed, the first reverse osmosis filter element 21 produces water normally, pure water produced by the first reverse osmosis filter element 21 is discharged from the pure water port 40 after passing through the first switch 81, and concentrated water at the concentrated water end of the first reverse osmosis filter element 21 is discharged from the waste water port 50 through the first waste water solenoid valve 61. The second reverse osmosis filter element 23 is not filtered, and the raw water entering the water pump 10 replaces the concentrated water at the concentrated water end of the second reverse osmosis filter element 23 with the raw water, and then is discharged from the waste water port 50 through the second waste water electromagnetic valve 62. After the operation for a period of time, the second reverse osmosis filter element 23 starts to filter normally, at this time, the second switch 82 is turned on, and the rest is unchanged, at this time, the pure water generated by the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 is supplied to the user normally through the pure water port 40. By adopting the steps (2) and (3) to simultaneously wash the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23, a user can obtain pure water without waiting, and the ion concentration value in the first cup of water discharged by the water purifier 100 can be ensured to be lower, so that the user experience is improved.

In another embodiment, as shown in fig. 4, fig. 4 is a schematic structural diagram of a water purifier in another embodiment of the present invention. The structure of the water purifier 100 in this embodiment is substantially the same as that of the water purifier 100 in fig. 2, except that in this embodiment, the pure water end of the second reverse osmosis filter element 23 is connected to the waste water port 50.

Specifically, a third normally closed solenoid valve 73 and a second check valve 92 are provided between the pure water end of the second reverse osmosis filter element 23 and the waste water port 50, and the second check valve 92 is communicated between the second reverse osmosis filter element 23 and the waste water port 50. The second check valve 92 can ensure the one-way flow of pure water to realize the two-way water sealing and prevent the water flowing out of the second reverse osmosis filter element 23 from flowing backwards.

The setting manner of the second check valve 92 is substantially the same as the setting manner of the first check valve 91, please refer to the setting manner of the first check valve 91 in the above embodiments, and will not be described herein again.

The operation of the water purifier 100 in this embodiment is substantially the same as the operation of the water purifier 100 shown in fig. 2, except that the water purifier 100 in this embodiment further includes, after performing step (1) and step (2): when the user gets water again, the water inlet 11 supplies raw water, at this time, the water pump 10 starts pressurization work, the first normally closed solenoid valve 223 and the third normally closed solenoid valve 73 are opened, the first switch 81 is opened, the second switch 82 and the third switch 83 are closed, the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 normally produce water, pure water generated by the first reverse osmosis filter element 21 is discharged from the pure water port 40 after passing through the first switch 81, and concentrated water generated by the first reverse osmosis filter element 21 is discharged from the waste water port 50 after passing through the first waste water solenoid valve 61. Pure water generated by the second reverse osmosis filter element 23 passes through the second check valve 92 and the third normally closed electromagnetic valve 73 and then is discharged through the waste water port 50, when the water purifier 100 works for a period of time, the third normally closed electromagnetic valve 73 is closed, the second switch 82 is opened, and the rest is unchanged, and then the pure water generated by the first reverse osmosis filter element 21 and the pure water generated by the second reverse osmosis filter element 23 are both normally supplied to a user through the pure water port 40. By connecting the pure water end of the second reverse osmosis filter element 23 with the waste water port 50 by using the third normally closed solenoid valve 73, pure water in the pure water end of the second reverse osmosis filter element 23 can be discharged through the waste water port 50 after being polluted by raw water, so as to reduce the ion concentration value in the first cup of water.

In another embodiment, as shown in fig. 5, fig. 5 is a schematic structural diagram of a water purifier in another embodiment of the present invention. The structure of the water purifier 100 in this embodiment is substantially the same as that of the water purifier 100 shown in fig. 3, except that in this embodiment, the pure water end of the second reverse osmosis filter element 23 is connected to the waste water port 50.

Specifically, a third normally closed solenoid valve 73 and a second check valve 92 are provided between the pure water end of the second reverse osmosis filter element 23 and the waste water port 50, and the second check valve 92 is communicated between the second reverse osmosis filter element 23 and the waste water port 50. The second check valve 92 can ensure the one-way flow of pure water to realize the two-way water sealing and prevent the water flowing out of the second reverse osmosis filter element 23 from flowing backwards.

The operation of the water purifier 100 in this embodiment is substantially the same as the operation of the water purifier 100 shown in fig. 3, except that the water purifier 100 in this embodiment further includes, after performing step (1) and step (2) in the embodiment of fig. 3 or performing step (1) and step (3) in the embodiment of fig. 3: when the user gets water again, the water inlet 11 supplies raw water, at this time, the water pump 10 starts pressurization work, the first normally closed solenoid valve 223 and the third normally closed solenoid valve 73 are opened, the first switch 81 is opened, the second switch 82 and the third switch 83 are closed, the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 normally produce water, pure water generated by the first reverse osmosis filter element 21 is discharged from the pure water port 40 after passing through the first switch 81, and concentrated water generated by the first reverse osmosis filter element 21 is discharged from the waste water port 50 after passing through the first waste water solenoid valve 61. Pure water produced by the second reverse osmosis filter element 23 passes through the second check valve 92 and the third normally closed solenoid valve 73 and is discharged through the waste water port 50. When the water purifier 100 works for a period of time, the third normally closed solenoid valve 73 is closed, the second switch 82 is opened, and the rest is unchanged, and then the pure water generated by the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 is normally supplied to the user through the pure water port 40. By connecting the pure water end of the second reverse osmosis filter element 23 with the waste water port 50 by using the third normally closed solenoid valve 73, pure water in the pure water end of the second reverse osmosis filter element 23 can be discharged through the waste water port 50 after being polluted by raw water, so as to reduce the ion concentration value in the first cup of water.

Alternatively, in another embodiment, after step (1), step (2) and step (3) in the embodiment of fig. 3 are performed, when the second reverse osmosis filter element 23 starts to work, the third normally closed electromagnetic valve 73 is opened, and the rest is unchanged, then the pure water at the pure water end of the second reverse osmosis filter element 23 is discharged through the waste water port 50, when the ion concentration value of the water discharged from the waste water port 50 is low, the third normally closed electromagnetic valve 73 can be closed and the second switch 82 can be opened, and then the pure water generated by the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 is normally supplied to the user through the pure water port 40. By connecting the pure water end of the second reverse osmosis filter element 23 with the waste water port 50 by using the third normally closed solenoid valve 73, pure water in the pure water end of the second reverse osmosis filter element 23 can be discharged through the waste water port 50 after being polluted by raw water, so as to reduce the ion concentration value in the first cup of water.

Further, as shown in fig. 1 to 5, the water purifier 100 may include a first sensor 31 and a second sensor 33. The first sensor 31 is connected between the water inlet 11 and the water pump 10 for detecting the ion concentration value. The second sensor 33 is connected between the pure water end of the first reverse osmosis filter element 21 and the pure water end of the second reverse osmosis filter element 23 and the pure water port 40, and detects an ion concentration value.

Specifically, the first sensor 31 is configured to detect an ion concentration value in the raw water, and the second sensor 33 is configured to detect an ion concentration value in the purified water, so as to adjust the flushing time and the flushing period of the water purifier 100 for the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 according to a proportional relationship between the ion concentration value in the raw water and the ion concentration value in the purified water.

For example, when the ratio of the ion concentration value in the raw water to the ion concentration value in the pure water is small, it is proved that the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 have poor filtering effects, and at this time, the washing time of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 may be prolonged or the washing period of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 may be shortened, so as to reduce the ion concentration value in the pure water. When the ratio of the ion concentration value in the raw water to the ion concentration value in the pure water is large, it is proved that the filtering effects of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 are good, and at this time, the flushing time of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 can be properly shortened or the flushing period of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 can be properly prolonged, so that water resources are saved and energy consumption is saved.

Further, as shown in fig. 1 to 5, the water purifier 100 may further include a third sensor 35 and a fourth sensor 37. A third sensor 35 is connected between the concentrate end of the first reverse osmosis cartridge 21 and the waste water port 50 for detecting an ion concentration value; a fourth sensor 37 is connected between the concentrate end of the second reverse osmosis cartridge 23 and the waste water port 50 for detecting an ion concentration value.

Specifically, the third sensor 35 is configured to detect an ion concentration value in the concentrated water discharged through the first reverse osmosis filter element 21, and the fourth sensor 37 is configured to detect an ion concentration value in the concentrated water discharged through the second reverse osmosis filter element 23, so as to control the flushing time of the concentrated water ends of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 according to the magnitude of the ion concentration value in the concentrated water discharged through the first reverse osmosis filter element 21 or the second reverse osmosis filter element 23.

For example, when the third sensor 35 detects that the ion concentration value in the concentrate discharged through the first reverse osmosis cartridge 21 is low, then the second normally closed solenoid valve 72 may be closed to end the flushing of the first reverse osmosis cartridge 21. When the fourth sensor 37 detects that the ion concentration value in the concentrate discharged through the second reverse osmosis filter element 23 is low, the flushing of the second reverse osmosis filter element 23 may be terminated, and the second reverse osmosis filter element 23 may be started to start filtering, so that the second reverse osmosis filter element 23 starts to operate, and thus, the operation of each element may be controlled conveniently.

Further, as shown in fig. 1 to 5, the water purifier 100 may further include a front reverse osmosis filter element 25 and a rear reverse osmosis filter element 27. The front reverse osmosis filter element 25 is arranged between the water pump 10 and the water inlet 11, and the rear reverse osmosis filter element 27 is arranged between the pure water ends of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 and the pure water port 40.

Optionally, in a specific embodiment, the pre-reverse osmosis filter element 25 may be configured to perform coarse filtration on silt, rust, colloid, etc. in raw water, and remove residual chlorine and most organic matters, so as to improve the filtering effect and the service life of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23. The post-positioned reverse osmosis filter element 27 can be arranged for further processing the pure water generated by the filtration of the first reverse osmosis filter element 21 and the second reverse osmosis filter element 23 so as to remove peculiar smell and improve the drinking taste.

Be different from prior art's condition, the embodiment of the utility model provides a purifier 100 is pressurizeed the raw water that water inlet 11 flowed in by water pump 10, filters through first reverse osmosis filter core 21 and second reverse osmosis filter core 23, divide into dense water and pure water, and dense water is discharged through waste water mouth 50, and the pure water is discharged through pure water mouth 40. And the pure water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23 is connected to the water inlet 11 of the water pump 10, so that the pure water generated at the pure water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23 can flush and replace the concentrated water at the concentrated water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23, so that the concentrated water at the concentrated water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23 is discharged through the waste water outlet 50, the ion concentration value of the raw water at the concentrated water end of the first reverse osmosis filter element 21 and/or the second reverse osmosis filter element 23 is reduced, and further, the situation that the ion concentration value of the raw water at the concentrated water end is too high and is transferred to the pure water end to cause pure water pollution and influence on the use of a user is avoided.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims (10)

1. A water purifier, characterized in that the water purifier comprises:

a water pump;

the raw water end of the first reverse osmosis filter element is connected with the water outlet of the water pump through a first connecting structure, the pure water end of the first reverse osmosis filter element is connected with a pure water port, and the concentrated water end of the first reverse osmosis filter element is connected with a waste water port; and

the raw water end of the second reverse osmosis filter element is connected with the water outlet of the water pump through a second connecting structure, the pure water end of the second reverse osmosis filter element is connected with the pure water port, and the concentrated water end of the second reverse osmosis filter element is connected with the waste water port;

the first connecting structure and the second connecting structure are different, so that the water pump supplies water to the first reverse osmosis filter element and the second reverse osmosis filter element in different modes.

2. The water purifier as recited in claim 1, wherein the first connection structure comprises a first water supply pipeline and a first normally closed solenoid valve, the raw water end of the first reverse osmosis filter element is connected to the water outlet of the water pump through the first water supply pipeline, and the first normally closed solenoid valve is disposed on the first water supply pipeline and is used for controlling the on-off of the first water supply pipeline; the second connection structure comprises a second water supply pipeline, and the raw water end of the second reverse osmosis filter element is directly connected with the water outlet of the water pump through the second water supply pipeline.

3. The water purifier of claim 1, wherein a pure water end of the first reverse osmosis filter element and/or the second reverse osmosis filter element is connected to a water inlet of the water pump.

4. The water purifier of claim 3, wherein the pure water end of the second reverse osmosis filter element is connected to the water inlet of the water pump, the pure water end of the second reverse osmosis filter element is connected to the raw water end of the first reverse osmosis filter element, and the pure water end of the second reverse osmosis filter element is connected to the waste water outlet.

5. The water purifier as recited in claim 4, wherein a second normally closed solenoid valve and a first one-way valve are disposed between the purified water end of the second reverse osmosis filter element and the raw water end of the first reverse osmosis filter element, the first one-way valve being open in a direction from the second reverse osmosis filter element to the first reverse osmosis filter element.

6. The water purifier of claim 4, wherein a third normally closed solenoid valve and a second one-way valve are disposed between the purified water end of the second reverse osmosis cartridge and the waste water outlet, the second one-way valve communicating between the second reverse osmosis cartridge and the waste water outlet.

7. The water purifier of claim 1, wherein a first wastewater solenoid valve is disposed between the concentrate end of the first reverse osmosis cartridge and the wastewater port, and a second wastewater solenoid valve is disposed between the concentrate end of the second reverse osmosis cartridge and the wastewater port.

8. The water purifier of claim 1, wherein the water pump is a booster pump, the booster pump is a variable power pump, and the booster pump is configured to adjust a water supply power of the water pump to the first and/or second reverse osmosis filter elements.

9. The water purifier of claim 3, wherein the water purifier comprises:

the first sensor is connected between the water inlet and the water pump and used for detecting an ion concentration value; and

and the second sensor is connected between the pure water end of the first reverse osmosis filter element and the pure water end of the second reverse osmosis filter element and the pure water port and is used for detecting an ion concentration value.

10. The water purifier of claim 3, further comprising:

the preposed reverse osmosis filter element is arranged between the water pump and the water inlet; and

the rear reverse osmosis filter element is arranged between the pure water ends of the first reverse osmosis filter element and the second reverse osmosis filter element and the pure water port.

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