CN218435116U - Water purification system and water purification device - Google Patents

Abstract

The utility model discloses a water purification system and purifier relates to water purification unit technical field. The water purification system comprises a reverse osmosis filter element, a water storage device and a pipeline structure. The water storage device comprises a shell and a partition component arranged in the shell, the partition component divides the shell into a raw water cavity and a pure water cavity, and the partition component has elasticity so as to reduce the volume of the pure water cavity; the pipeline structure comprises a raw water pipe, a pure water pipe, a concentrated water pipe and a return pipe, wherein the reverse osmosis filter element is respectively communicated with the raw water pipe, the pure water pipe and the concentrated water pipe, the pure water cavity is communicated with the pure water pipe, the raw water cavity is communicated with the raw water pipe, the return pipe is communicated with the concentrated water pipe and the raw water pipe, the return pipe is provided with a return check valve, and the return check valve enables water in the concentrated water pipe to enter the raw water pipe. This water purification system can store and cyclic utilization the water of recoil reverse osmosis filter core, prevents the waste of water, has improved system water efficiency.

Description

Water purification system and water purification device

Technical Field

The utility model relates to a water purification unit technical field especially relates to a water purification system and purifier.

Background

With the improvement of living standard, people put higher demands on the water quality of daily water. The water purifier is popular among consumers because the water purifier can conveniently produce fresh, more sanitary and safer purified water.

In the prior art, the water purifying device using the reverse osmosis filter element has the best comprehensive water purifying effect. After the reverse osmosis filter element produces water, pure water is arranged on one side of the reverse osmosis membrane, and raw water on the other side of the reverse osmosis membrane is changed into concentrated water and contains higher salt ions. When a user closes the water purifying device, salt ions in the concentrated water can slowly diffuse into the pure water due to the concentration difference, and the TDS value of the pure water is increased. When the user takes water again, the pure water with high TDS value is discharged, which can affect the drinking water health of people. At present, a water storage tank is adopted to store partial pure water, reverse osmosis membranes are backflushed after shutdown so as to discharge concentrated water, or pure water with a high TDS value is discharged firstly when water is taken next time, but a large amount of water resources are wasted by the two methods, and the water production efficiency is reduced.

In view of the above problems, there is a need to develop a water purification system and a water purification apparatus to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a water purification system can store and cyclic utilization the water of recoil reverse osmosis filter core, has effectively prevented the waste of water, has improved system water efficiency.

To achieve the purpose, the utility model adopts the following technical proposal:

a water purification system comprising:

a reverse osmosis filter element;

the water storage device comprises a shell and a partition component arranged in the shell, wherein the partition component divides the shell into a raw water cavity and a pure water cavity, and the partition component has elasticity so as to reduce the volume of the pure water cavity;

the pipeline structure comprises a raw water pipe, a pure water pipe, a concentrated water pipe and a return pipe, wherein the reverse osmosis filter element is respectively communicated with the raw water pipe, the pure water pipe and the concentrated water pipe, a pure water cavity is communicated with the pure water pipe, a raw water cavity is communicated with the raw water pipe, the return pipe is respectively communicated with the concentrated water pipe and the raw water pipe, the return pipe comprises a return one-way valve, and the return one-way valve can enable water of the concentrated water pipe to enter the raw water pipe.

Preferably, the water purification system further comprises a water inlet valve, wherein the water inlet valve is arranged on the raw water pipe and is positioned at the upstream of the raw water cavity and the return pipe.

Preferably, the partition assembly comprises a sliding block and an elastic piece, the sliding block is arranged in the shell in a sliding mode, and the elastic piece can drive the sliding block to slide so that the volume of the pure water cavity is reduced.

Preferably, the raw water cavity and the pure water cavity are arranged along the up-down direction or the left-right direction.

Preferably, the water purification system further comprises a backflow valve disposed on the backflow pipe and upstream of the backflow check valve.

Preferably, the water purification system further comprises a water outlet valve, and the water outlet valve is arranged on the concentrated water pipe and located at the downstream of the return pipe.

Preferably, the water purification system further comprises a concentrated water control valve, and the concentrated water control valve is arranged on the concentrated water pipe.

Preferably, the reverse osmosis cartridge comprises:

a bottle body;

the reverse osmosis component is arranged in the bottle body, a raw water area is arranged between the reverse osmosis component and the bottle body, the raw water area is communicated with the raw water pipe, and the reverse osmosis component is communicated with the concentrated water pipe and the pure water pipe respectively.

Preferably, the reverse osmosis filter core still includes the center tube, the center tube runs through the reverse osmosis subassembly, the both ends of center tube respectively with former water district reaches the pure water pipe intercommunication, the process reverse osmosis subassembly filters the pure water after can get into the center tube.

Preferably, a booster pump is arranged on the raw water pipe and is positioned at the upstream of the reverse osmosis filter element.

A water purifying device comprises the water purifying system.

The utility model has the advantages that:

the utility model provides a water purification system and purifier. In the water purification system, a raw water pipe is connected with a tap water pipe, tap water is raw water, a pure water pipe is connected with a water faucet, and after a user opens the water faucet, the raw water flows out of the pure water pipe after passing through a reverse osmosis filter element and is taken by the user. When a user closes the faucet, pure water enters the shell of the water storage device and pushes the partition assembly, so that the volume of the pure water cavity is increased to store the pure water, and meanwhile, the partition assembly stores elastic potential energy. After the former water pipe was closed, the power that the pure water got into the pure water chamber disappeared, cut off the elastic potential energy release of subassembly, and the pure water of drive pure water intracavity passes through the pure water pipe and gets into the reverse osmosis filter core to follow the concentrated water pipe with the dense water in the reverse osmosis filter core and wash out and get into former water chamber behind the back flow, the former water district and the pure water district of reverse osmosis membrane both sides are the pure water this moment, thereby prevent that salt ion from getting into the pure water district through reverse osmosis membrane.

This water purification system can utilize the elastic potential energy who cuts off the subassembly to realize the recoil of pure water to the reverse osmosis filter core, prevents that salt ion from slowly diffusing to the pure water district of reverse osmosis filter core to when having solved the user and getting water once more, the problem that the pure water of high TDS value was emitted has guaranteed that people's drinking water is healthy. And the water of the backflushing reverse osmosis filter element is stored in the original water cavity and recycled, so that the waste of water is effectively prevented, and the water production efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of a water purification system provided by an embodiment of the present invention for preparing pure water;

fig. 2 is a schematic structural view of a water purification system according to an embodiment of the present invention storing pure water;

fig. 3 is a schematic structural diagram of a water purification system according to an embodiment of the present invention when a reverse osmosis filter element is backflushed;

fig. 4 is a first schematic structural view of the reverse osmosis filter element provided by the present invention;

fig. 5 is a schematic structural diagram of a reverse osmosis filter element provided by the present invention;

FIG. 6 is a schematic structural view of a water purification system provided in the second embodiment of the present invention for preparing pure water;

fig. 7 is a schematic structural view of a water purification system according to a second embodiment of the present invention storing pure water;

fig. 8 is a schematic structural diagram of a water purification system backflushing reverse osmosis filter element according to the second embodiment of the present invention.

In the figure:

1. a reverse osmosis filter element; 11. a bottle body; 12. an end cap; 121. accommodating grooves; 13. a reverse osmosis module; 131. an isolation cylinder; 132. a reverse osmosis membrane; 14. a raw water zone; 15. a first check valve; 16. a central tube; 161. a through hole; 17. a second check valve; 2. a water storage device; 21. a housing; 22. a pure water chamber; 23. a raw water cavity; 24. a partition assembly; 241. a slider; 242. an elastic member; 31. a raw water pipe; 32. a pure water pipe; 33. a concentrated water pipe; 34. a first tube; 35. a second tube; 36. a return pipe; 361. a backflow check valve; 41. a water inlet valve; 42. a reflux valve; 43. a water outlet valve; 44. a concentrate control valve; 5. a booster pump; 6. a detection switch; 7. pretreating a filter element; 8. and (5) post-treating the filter element.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting 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 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" and "second" 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.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.

With the improvement of living standard, people put higher demands on the water quality of daily water. The water purifier is popular among consumers because the water purifier can conveniently produce fresh, more sanitary and safer purified water. In the prior art, the water purifying device using the reverse osmosis filter element has the best comprehensive water purifying effect.

Tap water is raw water, the raw water contains more salt ions, and part of the salt ions are harmful to human bodies and need to be separated to obtain pure water for people to drink. The principle of the reverse osmosis filter element is that raw water is pressurized in a raw water area on one side of a reverse osmosis membrane, so that water molecules quickly pass through the reverse osmosis membrane to enter a pure water area, and salt ions in the raw water pass through the reverse osmosis membrane at a low speed, so that the content of the salt ions in the water in the pure water area is low, and the purpose of purifying the water is achieved.

After the reverse osmosis filter element produces water, pure water is arranged on one side of the reverse osmosis membrane, and raw water on the other side of the reverse osmosis membrane is changed into concentrated water and contains higher salt ions. When the user closes the water purification device, salt ions in the concentrated water can slowly diffuse into the pure water due to the concentration difference, and the TDS (Total dissolved solids) value of the pure water is increased. When the user takes water again, the pure water with high TDS value is discharged, which can affect the drinking water health of people.

At present adopt water storage tank to store partial pure water more, carry out the recoil to reverse osmosis membrane after shutting down in order to discharge dense water, or discharge the high pure water of TDS value earlier when next water intaking, but these two kinds of methods all can waste a large amount of water resources, reduce system water efficiency.

Example one

In order to solve the above problems, the present embodiment provides a water purification system, as shown in fig. 1 to 3, the water purification system includes a reverse osmosis filter element 1, a water storage device 2 and a pipeline structure. The water storage device 2 includes a housing 21 and a partition assembly 24 disposed in the housing 21, the partition assembly 24 partitions the housing 21 into a raw water cavity 23 and a pure water cavity 22, and the partition assembly 24 has elasticity to reduce the volume of the pure water cavity 22. The pipeline structure comprises a raw water pipe 31, a pure water pipe 32, a concentrated water pipe 33 and a return pipe 36, the reverse osmosis filter element 1 is respectively communicated with the raw water pipe 31, the pure water pipe 32 and the concentrated water pipe 33, the pure water cavity 22 is communicated with the pure water pipe 32, the raw water cavity 23 is communicated with the raw water pipe 31, the return pipe 36 is respectively communicated with the concentrated water pipe 33 and the raw water pipe 31, the return pipe 36 comprises a return one-way valve 361, and the return one-way valve 361 can enable water of the concentrated water pipe 33 to enter the raw water pipe 31.

In the water purification system, a raw water pipe 31 is connected with a tap water pipe, tap water is raw water, a pure water pipe is connected with a water tap, after a user opens the water tap, the raw water flows out of the pure water pipe 32 after passing through the reverse osmosis filter element 1 and is taken by the user, and the flow direction of the water is shown by an arrow in fig. 1. When the user closes the faucet, pure water enters the housing 21 of the water storage device 2 and pushes the partition assembly 24, so that the volume of the pure water chamber 22 is increased to store the pure water, and simultaneously the partition assembly 24 stores elastic potential energy, and the flowing direction of the water is shown in fig. 2. When the raw water pipe 31 is closed, the power of pure water entering the pure water cavity 22 disappears, the elastic potential energy of the partition component 24 is released, the pure water in the pure water cavity 22 is driven to enter the reverse osmosis filter element 1, so that the concentrated water in the reverse osmosis filter element 1 is flushed out from the concentrated water pipe 33 and enters the raw water cavity 23 through the return pipe 36, at the moment, the raw water area and the pure water area on the two sides of the reverse osmosis membrane are both pure water, and therefore salt ions are prevented from entering the pure water area through the reverse osmosis membrane, and the flowing direction of the water is shown in fig. 3 at the moment. The water in the raw water cavity 23 can enter the reverse osmosis filter element 1 along with the raw water when the user takes water next time, so that the cyclic utilization is realized. The backflow check valve 361 of the backflow pipe 36 can prevent raw water from flowing into the concentrated water pipe 33 through the backflow pipe 36 and being discharged to cause waste of water resources during water production.

The pure water chamber 23 of the water storage device 2 is connected to the pure water pipe 32 through a first pipe 34, and the raw water chamber 24 is connected to the raw water pipe 31 through a second pipe 35.

This water purification system can utilize the elastic potential energy who cuts off subassembly 24 to realize the recoil of pure water to reverse osmosis filter core 1, prevents that salt ion from slowly diffusing to reverse osmosis filter core 1's pure water district to when having solved the user and getting water once more, the problem that the pure water of high TDS value was emitted has guaranteed that people's drinking water is healthy. And the water of the backflushing reverse osmosis filter element 1 is stored in the raw water cavity 23 and recycled, so that the waste of water is effectively prevented, and the water making efficiency is improved. The power of the reverse osmosis filter element 1 of the water purification system is from the elastic potential energy of the partition component 24, a driving part is not required to be arranged independently, the structure is simple, and the cost is low.

It is understood that the water in the return pipe 36 is a mixed liquid of pure water and concentrated water, which is closer to the raw water in terms of composition, and has a salt ion content between the pure water and the concentrated water.

Preferably, the water purification system further comprises a water inlet valve 41, the water inlet valve 41 being disposed on the raw water pipe 31 upstream of the raw water chamber 23 and the return pipe 36. When the reverse osmosis filter element 1 needs to be backflushed by pure water in the pure water cavity 22, the water inlet valve 41 is closed, and then the concentrated water in the return pipe 36 can enter the concentrated water cavity 23.

As shown in fig. 1-3, the water purification system further comprises a water outlet valve 43, the water outlet valve 43 being arranged on the concentrate pipe 33 behind the return pipe 36. The water outlet valve 43 can control the on-off of the concentrated water pipe 33, and the water outlet valve 43 can be closed when the reverse osmosis filter element 1 needs to be backflushed, so that the flushed mixed liquid can enter the raw water cavity 23 through the return pipe 36, and the mixed liquid is prevented from being discharged through the concentrated water pipe 33 to cause waste.

As shown in fig. 1 to 3, a booster pump 5 is provided on the raw water pipe 31, and the booster pump 5 is located upstream of the reverse osmosis filter element 1. The booster pump 5 serves to pressurize the raw water in the raw water pipe 31 to power water molecules of the raw water through the reverse osmosis membrane, and the booster pump 5 can adjust the pressure according to a demand of a user for pure water to control a speed of purifying the raw water to produce pure water. Specifically, the booster pump 5 is located behind the communication position of the second pipe 35 and the raw water pipe 31, so that not only can raw water be prevented from entering the raw water cavity 23 due to overlarge pressure after the booster pump 5 is boosted, but also water in the raw water cavity 23, the second pipe 35 and the return pipe 36 can be pumped into the reverse osmosis filter element 1 in the boosting process, and recycling is achieved.

As shown in fig. 1-3, the water purification system further includes a detection switch 6, the detection switch 6 is disposed on the pure water pipe 32, and the detection switch 6 is respectively in communication connection with the water inlet valve 41, the booster pump 5, the water outlet valve 43 and the faucet. The detection switch 6 can detect the intention of a user, when the user needs to take pure water to open the faucet, the detection switch 6 is opened along with the pure water, the water inlet valve 41 and the booster pump 5 are controlled to be opened, and the raw water is purified by the reverse osmosis filter element 1 to form pure water. When the user finishes taking the pure water, the detection switch 6 is closed and controls the water inlet valve 41, the booster pump 5 and the water outlet valve 43 to be closed, so that the pure water in the pure water cavity 22 can backflush the reverse osmosis filter element 1 and then enter the raw water cavity 23.

Further, after the user closes the water purification system, the detection switch 6 controls the water inlet valve 41 to be closed after delaying for 5-30s, and during the period before the water inlet valve 41 is closed, pure water enters the pure water cavity 22 for storage due to the fact that the detection switch 6 is closed, and the partition assembly 24 stores elastic potential energy. And after 1-10s, the booster pump 5 and the water outlet valve 43 are controlled to be closed, and at the moment, the pure water in the pure water cavity 22 enters the reverse osmosis filter element 1 under the driving of the elastic potential energy of the partition component 24, is mixed with the concentrated water and then enters the raw water cavity 23.

As shown in fig. 1-3, the water purification system further includes a concentrate control valve 44, and the concentrate control valve 44 is provided on the concentrate pipe 33. The rich control valve 44 can control the water discharge rate of the water purification system by controlling the rate of discharge of the rich water by changing the degree of opening, and the greater the degree of opening of the rich control valve 44, the more rich water is discharged when the same pure water is produced. In the present embodiment, the rich control valve 44 is provided after the point at which the return pipe 36 communicates with the rich water pipe 33, and the rich control valve 44 is used only for controlling the rate of water discharge at the time of water production.

As shown in fig. 1-3, the water purification system further includes a return valve 42, and the return valve 42 is disposed on the return pipe 36 and located at the front end of the check valve. The return valve 42 is used for controlling the on-off of the return pipe 36, and when the mixed liquid of the pure water and the concentrated water after flushing does not need to be stored, the return valve 42 can be closed, and the concentrated water control valve 44 and the water outlet valve 43 can be opened, so that the mixed liquid can be directly discharged. Furthermore, the reverse osmosis filter cartridge 1 is always discharging the concentrate during the period from the time when the user stops taking water to the time when the booster pump 5 is turned off, and the return valve 42 is turned off, so that the TDS value in the returned water can be kept as low as possible.

As shown in fig. 1 to 3, the partition assembly 24 includes a slider 241 and an elastic member 242, the slider 241 is slidably disposed in the housing 21, and the elastic member 242 can drive the slider 241 to slide so as to reduce the volume of the pure water chamber 22. When the user finishes taking water and closes the faucet, pure water enters the pure water cavity 22 and pushes the sliding block 241 to compress the elastic member 242, and then when the booster pump 5, the water inlet valve 41 and the water outlet valve 43 are all closed, the elastic member 242 releases elastic potential energy and pushes the sliding block 241 to drive the pure water to backflush the reverse osmosis filter element 1.

In other embodiments, the partition assembly 24 may also be an elastic membrane disposed on the inner wall of the housing 21, and when the reverse osmosis filter cartridge 1 needs to be backflushed with pure water, the elastic potential energy of the elastic membrane can provide the driving force of the pure water.

Specifically, the raw water chamber 23 and the pure water chamber 22 are arranged in the vertical direction or the horizontal direction, as long as the volume ratio of the raw water chamber 23 to the pure water chamber 22 can be changed when the slider slides.

As shown in fig. 4 and 5, the reverse osmosis cartridge 1 includes a bottle 11 and a reverse osmosis unit 13. The reverse osmosis component 13 is arranged in the bottle body 11, a raw water region 14 is arranged between the reverse osmosis component 13 and the bottle body 11, the raw water region 14 is communicated with a raw water pipe 31, and the reverse osmosis component 13 is respectively communicated with a concentrated water pipe 33 and a pure water pipe 32.

The reverse osmosis module 13 has a function of filtering raw water to separate the raw water into pure water and concentrated water. After the raw water enters the raw water area 14, the raw water is filtered by the reverse osmosis component 13, the pure water enters the pure water pipe 32, and the concentrated water enters the concentrated water pipe 33.

Preferably, the reverse osmosis filter element 1 further comprises a central tube 16, the central tube 16 penetrates through the reverse osmosis module 13, two ends of the central tube 16 are respectively communicated with the raw water region 14 and the pure water tube, and the pure water filtered by the reverse osmosis module 13 can enter the central tube 16.

Wherein the direction of the arrows in fig. 4 and 5 indicates the direction of flow of the water flow within the reverse osmosis cartridge 1.

As shown in fig. 4, when a user takes water through the water purification system, raw water enters the raw water area 14 through the raw water pipe 31 and enters the reverse osmosis module 13, water molecules in the raw water are filtered by the reverse osmosis module 13 to form pure water, the pure water enters the central pipe 16 and then enters the pure water cavity 23 and is taken by the user, and the raw water in the reverse osmosis module 13 becomes concentrated water due to the increase of the content of salt ions and is discharged from the concentrated water pipe 33, so that the raw water is purified.

As shown in fig. 5, when the user finishes taking water and closes the faucet and enough pure water is stored in the raw water chamber 23, the detection switch controls the water inlet valve 4 and the booster pump 5 to be closed, raw water in the raw water pipe 31 enters the raw water chamber 24, pure water is driven through the partition 22 to enter the central pipe 16 through the first pipe 34 and enter the reverse osmosis module 13 through one end of the reverse osmosis module 13, and therefore, concentrated water in the reverse osmosis module 13 is discharged from the concentrated water pipe 33.

Preferably, the side wall of the center tube 16 is perforated with a through hole 161. Pure water filtered by the reverse osmosis module 13 can enter the central tube 16 through the through hole 161 and further enter the pure water tube 32 through the central tube 16.

Preferably, the reverse osmosis module 13 comprises an isolation cylinder 131 and a reverse osmosis membrane 132 disposed in the isolation cylinder 131, wherein one end of the isolation cylinder 131 is communicated with the concentrate pipe 33. For raw water district 14 between isolation cylinder 131 and the bottle 11, isolation cylinder 131 can keep apart reverse osmosis membrane 132 and raw water district 14, makes raw water just can contact reverse osmosis membrane 132 after the tip of keeping apart cylinder 131 to be filtered by reverse osmosis membrane 132.

Preferably, the reverse osmosis filter element 1 further includes an end cover 12, the end cover is disposed at the bottom of the bottle body 11, the end cover 12 is concavely provided with a holding tank 121, the bottom of the holding tank 121 is provided with a water inlet hole, and one end of the isolating cylinder 131 far away from the concentrate pipe 33 and one end of the central pipe 16 are inserted into the holding tank 121 and communicated with the holding tank 121. The raw water of the raw water zone 14 enters the holding tank 121 through the water inlet hole and flows into the separation cylinder 131 to be purified. When the pure water of the backflushing reverse osmosis filter element 1 enters the central tube 16, the pure water enters the holding tank 121 along the central tube 16 and enters the isolation cylinder 131 through the holding tank 121, and the concentrated water in the isolation cylinder 131 is flushed into the concentrated water pipe 33 and then discharged.

Further, the reverse osmosis filter element 1 further comprises a first one-way valve 15 and a second one-way valve 17, the first one-way valve 15 is arranged at the bottom of the accommodating groove 121, and the first one-way valve 15 enables water in the raw water region 14 to enter the isolating cylinder 131. The second check valve 17 is provided in the deionized water pipe 32, and the second check valve 17 allows water in the deionized water pipe 32 to enter the housing tank 121.

When preparing pure water, the second check valve 17 can prevent raw water entering the holding tank 121 from entering the central tube and only enter the isolating cylinder 131 of the reverse osmosis module 13, so that water molecules in the raw water can enter the central tube 16 through the reverse osmosis membrane 132 and the through hole 161 of the central tube 16, and the purity of the pure water in the central tube 16 is ensured.

When utilizing pure water recoil reverse osmosis filter core 1, first check valve 15 can guarantee that the pure water of recoil reverse osmosis filter core 1 gets into holding tank 121 after, only can get into the isolation section of thick bamboo 131 of reverse osmosis module 13, can't get into former water district 14 to make the dense water in the isolation section of thick bamboo 131 discharge from dense water pipe 33.

As shown in fig. 1 to 3, the water purification system further includes a pretreatment cartridge 7, and the pretreatment cartridge 7 is disposed on the raw water pipe 31 and located at the front end of the second pipe 35. The pretreatment filter element 7 is used for pre-filtering raw water, preventing large particles (such as silt, rust and the like) in the raw water from entering the raw water cavity 23 and the reverse osmosis filter element 1, ensuring the water quality of the reverse osmosis inlet, avoiding the occurrence of the conditions of reverse osmosis such as blockage and scaling and the like, and prolonging the service life of the water purification system. Wherein, the pretreatment filter element 7 is a high-density fiber cotton filter element generally, and has good filtering effect and large dirt holding capacity.

As shown in fig. 1-3, the water purification system further includes a post-treatment filter element 8, and the post-treatment filter element 8 is disposed on the purified water pipe 32. The post-treatment filter element 8 is used for adsorbing foreign color and odor substances and improving the taste. Wherein, the post-treatment filter element 8 can be arranged in front of the detection switch 6 or behind the detection switch 6.

The embodiment also provides a water purification unit, and the water purification unit comprises the water purification system. This purifier can utilize the power of raw water to realize the recoil of pure water to reverse osmosis filter core 1, prevents that salt ion from slowly diffusing to reverse osmosis filter core 1's pure water district to when having solved the user and getting water once more, the problem that the pure water of high TDS value was emitted has guaranteed that people's drinking water is healthy. The power of the reverse osmosis filter element 1 of the water purification system is tap water, a driving piece does not need to be arranged independently, and the water purification system is simple in structure and low in cost.

Example two

This embodiment is based on the first embodiment with the position of the rich control valve 44 being changed.

As shown in fig. 6-8, the rich control valve 44 is disposed before the point of communication of the return pipe 36 with the rich pipe 33.

It will be appreciated that after pure water backflushes the reverse osmosis cartridge 1, it will flow through the concentrate control valve 44 to flush the concentrate control valve 44 to prevent fouling or foreign object clogging of the concentrate control valve 44. At this time, the opening of the rich control valve 44 may be controlled to be maximized to accomplish the rapid flushing of the rich control valve 44.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (11)

1. A water purification system, comprising:

a reverse osmosis filter element (1);

the water storage device (2) comprises a shell (21) and a partition assembly (24) arranged in the shell (21), the shell (21) is divided into a raw water cavity (23) and a pure water cavity (22) by the partition assembly (24), and the partition assembly (24) has elasticity so as to reduce the volume of the pure water cavity (22);

pipeline structure, including former water pipe (31), pure water pipe (32), dense water pipe (33) and back flow (36), reverse osmosis filter core (1) respectively with former water pipe (31) pure water pipe (32) and dense water pipe (33) are linked together, pure water chamber (22) with pure water pipe (32) are linked together, former water chamber (23) with former water pipe (31) are linked together, back flow (36) respectively with dense water pipe (33) with former water pipe (31) are linked together, back flow (36) are including backward flow check valve (361), backward flow check valve (361) can make the water of dense water pipe (33) gets into former water pipe (31).

2. Water purification system according to claim 1, further comprising a water inlet valve (41), the water inlet valve (41) being arranged on the raw water pipe (31) upstream of the raw water chamber (23) and the return pipe (36).

3. The water purification system of claim 1, wherein the partition assembly (24) comprises a slider (241) and an elastic member (242), the slider (241) is slidably disposed in the housing (21), and the elastic member (242) can drive the slider (241) to slide to reduce the volume of the pure water chamber (22).

4. The water purification system of claim 1, wherein the raw water chamber (23) and the purified water chamber (22) are arranged in an up-down direction or a left-right direction.

5. The water purification system of claim 1, further comprising a backflow valve (42), the backflow valve (42) being disposed on the backflow pipe (36) upstream of the backflow check valve (361).

6. Water purification system according to claim 1, further comprising a water outlet valve (43), the water outlet valve (43) being arranged on the concentrate pipe (33) downstream of the return pipe (36).

7. The water purification system of claim 1, further comprising a concentrate control valve (44), wherein the concentrate control valve (44) is disposed on the concentrate pipe (33).

8. Water purification system according to any one of claims 1-7, wherein the reverse osmosis cartridge (1) comprises:

a bottle body (11);

the reverse osmosis component (13) is arranged in the bottle body (11), a raw water area (14) is arranged between the reverse osmosis component (13) and the bottle body (11), the raw water area (14) is communicated with the raw water pipe (31), and the reverse osmosis component (13) is respectively communicated with the concentrated water pipe (33) and the pure water pipe (32).

9. The water purification system of claim 8, wherein the reverse osmosis filter element (1) further comprises a central tube (16), the central tube (16) penetrates through the reverse osmosis module (13), two ends of the central tube (16) are respectively communicated with the raw water region (14) and the purified water pipe (32), and the purified water filtered by the reverse osmosis module (13) can enter the central tube (16).

10. Water purification system according to claim 8, wherein a booster pump (5) is arranged on the raw water pipe (31), the booster pump (5) being located upstream of the reverse osmosis cartridge (1).

11. A water purification apparatus, characterized in that it comprises a water purification system according to any one of claims 1-10.

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