CN109231360B

CN109231360B - Water treatment system, control method thereof and filter element structure

Info

Publication number: CN109231360B
Application number: CN201810996116.3A
Authority: CN
Inventors: 王涛; 祁腾腾; 王世乾; 罗清亮; 詹婷; 陈黄锰; 史新洋; 周曌
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2023-08-11
Anticipated expiration: 2038-08-29
Also published as: CN109231360A

Abstract

The invention discloses a water treatment system, a control method thereof and a filter element structure, wherein the water treatment system comprises a first filter device, the first filter device comprises at least two chambers which are mutually independent, a filter structure is arranged in each chamber, the water treatment system can form a water making flow path and a flushing flow path, the water treatment system also comprises a switching device, the switching device is configured to switch the at least two chambers into the water making flow path and the flushing flow path, when one chamber is used as a water making cavity, the other chamber can be used as a flushing cavity, and the water making cavity and the flushing cavity can be interchanged, the structure is simple and reasonable, the cleaning is easy, the first filter device is not required to be disassembled for manual flushing, the cleaning difficulty is reduced, the subsequent maintenance cost is saved, and meanwhile, the service life of the first filter device is prolonged, so that the service life of the water treatment system is prolonged, and the use experience of a user is improved.

Description

Water treatment system, control method thereof and filter element structure

Technical Field

The invention relates to the technical field of water treatment, in particular to a water treatment system, a control method and a filter element structure.

Background

The ultrafiltration membrane technology is a green and efficient water purification treatment technology, and the ultrafiltration membrane filter core has good interception effect on pollutants such as sediment, bacteria, viruses, colloid, organic matters and the like. The ultrafiltration membrane filter core widely applied in the market is an external pressure type hollow fiber ultrafiltration membrane component, a single-inlet and single-outlet dead-end filtering mode is adopted in most cases, water is fed from one end, and purified water is produced after the filtration of the ultrafiltration membrane. Because the water pressure distributes unevenly in the subassembly, the farther away from the water inlet, the lower the water pressure, the lower the water velocity and flow, the flow state is worse, the pollutant is very easy to attach on the membrane wire surface, and the membrane pollution is more serious, leads to the life-span shorter, and the subassembly is changed frequently very high, does not have the flushing pipeline moreover, need to unpack the filter core and carry out manual flushing, and the washing degree of difficulty is very big, leads to after-market cost extravagant.

Disclosure of Invention

Therefore, one of the purposes of the present invention is to provide a water treatment system, a control method thereof, and a filter element structure, so as to solve the problems of short service life and high replacement frequency of the existing filter element.

In order to achieve the above purpose, on one hand, the present invention adopts the following technical scheme:

a water treatment system comprising a first filter device comprising at least two chambers independent of each other, each chamber having a filter structure disposed therein, the water treatment system being capable of forming a water-making flow path and a flushing flow path, the water treatment system further comprising a switching device configured to enable switching of the at least two chambers into the water-making flow path and the flushing flow path.

Preferably, the at least two chambers comprise a first chamber and a second chamber,

a first water gap and a second water gap are arranged on the first chamber, one of the first water gap and the second water gap is communicated with the space at the upstream side of the filtering structure in the first chamber, the other one of the first water gap and the second water gap is communicated with the space at the downstream side of the filtering structure in the first chamber,

a third water gap and a fourth water gap are arranged on the second chamber, one of the third water gap and the fourth water gap is communicated with the space at the upstream side of the filtering structure in the second chamber, the other of the third water gap and the fourth water gap is communicated with the space at the downstream side of the filtering structure in the second chamber,

the water treatment system comprises a water inlet branch, a first waste discharge branch and a first purified water branch, the switching device comprises a first switching unit and a second switching unit, the first switching unit is used for switching the water inlet branch and the first waste discharge branch between the first water gap and the third water gap, and the second switching unit is configured to enable the second water gap or the fourth water gap to be communicated with the first purified water branch.

Preferably, the second switching unit is further configured to enable the second nozzle to communicate with the fourth nozzle.

Preferably, the water treatment apparatus further comprises a flushing water branch, the switching apparatus further comprising a third switching unit for switching communication between the first purified water branch and the flushing water branch between the second water port and the fourth water port.

Preferably, the water treatment system further comprises a second filtering device, wherein the water outlet of the first purified water branch is communicated with the water inlet of the second filtering device, the waste water port of the second filtering device is connected with a second waste discharge branch, and the flushing water branch is communicated with the second waste discharge branch; and/or the number of the groups of groups,

the water treatment system further comprises a water storage device, and the flushing water branch is communicated with the water storage device.

Preferably, a fifth water gap is arranged on the first chamber, the fifth water gap and the first water gap are communicated with the same side space of the filtering structure of the first chamber,

a sixth water gap is arranged on the second chamber, the sixth water gap and the third water gap are communicated with the same side space of the filtering structure of the second chamber,

the water treatment system further comprises a third waste discharge branch, and the switching device further comprises a fourth switching unit, wherein the fourth switching unit is used for switching the third waste discharge branch to be communicated between the fifth water gap and the sixth water gap.

On the other hand, the invention adopts the following technical scheme:

preferably, the water treatment system has a first water making mode, a second water making mode, a first flushing mode, a second flushing mode,

in the first water making mode, the first switching unit is controlled to communicate the water inlet branch with the first water gap, and the second switching unit is controlled to communicate the second water gap with the first purified water branch;

in the first flushing mode, the first switching unit is controlled to communicate the first waste discharge branch with the third water gap, the water inlet branch is controlled to communicate the first water gap, and the second switching unit is controlled to communicate the second water gap with the fourth water gap;

in the second water making mode, the first switching unit is controlled to communicate the water inlet branch with the third water gap, and the second switching unit is controlled to communicate the fourth water gap with the first purified water branch;

and in the second flushing mode, the first switching unit is controlled to communicate the first waste discharge branch with the first water gap, the water inlet branch with the third water gap, and the second switching unit is controlled to communicate the second water gap with the fourth water gap.

in the first flushing mode, the first switching unit is controlled to communicate the first waste discharge branch with the third water gap, and the second switching unit is controlled to communicate the fourth water gap with the flushing water branch;

and in the second flushing mode, the first switching unit is controlled to communicate the first waste discharge branch with the first water gap, and the second switching unit is controlled to communicate the second water gap with the flushing water branch.

Preferably, the water treatment system has a third rinse mode and a fourth rinse mode,

In the third flushing mode, the first switching unit is controlled to communicate the water inlet branch with the third water gap, and the fourth switching unit is controlled to communicate the third waste discharge branch with the sixth water gap;

and in the fourth flushing mode, the first switching unit is controlled to communicate the water inlet with the first water gap, and the fourth switching unit is controlled to communicate the third waste discharge branch with the fifth water gap.

In yet another aspect, the present invention employs the following technical scheme:

the first filtering device in the water treatment system is characterized by comprising a shell, wherein a separation structure is arranged inside the shell, the inside of the shell is separated into at least two chambers by the separation structure, and each chamber is internally provided with a filtering structure.

Preferably, the shell comprises a filter flask with one end closed and the other end open and a first end structure arranged at the open end of the filter flask, wherein the first water gap, the second water gap, the third water gap and the fourth water gap are all arranged on the first end structure, and the separation structure comprises a separation plate which extends along the axial direction of the shell and is connected with the side wall of the filter flask so as to divide the inner cavity of the shell into a first cavity and a second cavity which are mutually independent.

Preferably, the filter element structure further comprises a membrane shell sleeved in the filter flask, the filter structure is arranged in the membrane shell, the membrane shell and the filter structure are divided into two parts by the partition plate, one part of the membrane shell and the filter structure is located in the first chamber, and the other part of the membrane shell and the filter structure is located in the second chamber.

Preferably, the membrane shell comprises a tubular structure with two open ends and a second end structure arranged at an open end of the tubular structure, wherein a first port and a second port are arranged on the second end structure, the first port is communicated with the second port, the second port is communicated with the fourth port, a part of structure at one end of the partition plate is connected with the second end structure so as to separate the first port from the second port, the other end of the partition plate is connected with the closed end of the filter flask, and a space is reserved between the other open end of the tubular structure and the closed end of the filter flask.

Preferably, the tubular structure is provided with a water through hole; and/or the number of the groups of groups,

the inner side wall and/or the outer side wall of the cylindrical structure are/is provided with a convex and/or a concave structure.

Preferably, the projection and/or recess arrangement extends in a spiral direction.

Preferably, said fifth nozzle and said sixth nozzle are provided on said first end structure,

a first partition part is arranged in the first chamber, is arranged between the membrane shell and the outer shell and is connected with the first end part structure, and separates the fifth water gap from the first water gap; and/or the number of the groups of groups,

a second partition is arranged in the second chamber, is arranged between the membrane shell and the outer shell and is connected with the first end structure, and the second partition separates the sixth water gap from the third water gap.

Preferably, the first partition part comprises a first semi-cylindrical structure, one end of the first semi-cylindrical structure is connected with the first end part structure, the other end of the first semi-cylindrical structure is provided with a first flow dividing plate, and the radial inner end of the first flow dividing plate is positioned between the partition plate and the membrane shell in the radial direction of the first semi-cylindrical structure; and/or the number of the groups of groups,

the second partition part comprises a second semi-cylindrical structure, one end of the second semi-cylindrical structure is connected with the first end part structure, a second flow dividing plate is arranged at the other end of the second semi-cylindrical structure, and the radial inner end of the second flow dividing plate is positioned between the partition plate and the membrane shell in the radial direction of the second semi-cylindrical structure.

According to the water treatment system, the control method and the filter element structure thereof, at least two chambers in the first filtering device are switched into the water making flow path and the flushing flow path through the switching device, when one chamber is used as the water making chamber, the other chamber can be used as the flushing chamber, the water making chamber and the flushing chamber can be interchanged, the structure is simple and reasonable, the cleaning is easy, the first filtering device is not required to be disassembled for manual flushing, the cleaning difficulty is reduced, the subsequent maintenance cost is saved, and meanwhile, the service life of the first filtering device is prolonged, so that the service life of the water treatment system is prolonged, and the use experience of a user is improved.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

FIG. 1 shows a longitudinal cross-sectional view of a filter cartridge structure provided in one embodiment of the present invention;

FIG. 2 shows a cross-sectional view of the cartridge structure provided by the embodiment shown in FIG. 1;

FIG. 3 shows a schematic view of a water treatment system provided by a first embodiment employing the cartridge configuration of FIG. 1;

FIG. 4 shows a schematic view of a water treatment system provided by a second embodiment employing the cartridge configuration of FIG. 1;

FIG. 5 shows a schematic view of a water treatment system provided by a third embodiment employing the cartridge configuration of FIG. 1;

FIG. 6 shows a partial schematic of the structure of FIG. 3;

FIG. 7 shows a longitudinal cross-sectional view of a filter cartridge structure provided by another embodiment of the present invention;

FIG. 8 illustrates a cross-sectional view of a cartridge structure provided in accordance with the embodiment of the present invention shown in FIG. 7;

FIG. 9 shows a schematic view of a water treatment system provided by a fourth embodiment employing the cartridge configuration of FIG. 7;

FIG. 10 shows a schematic view of a water treatment system provided by a fifth embodiment employing the cartridge configuration of FIG. 7;

FIG. 11 shows a schematic view of a water treatment system provided by a sixth embodiment employing the cartridge configuration of FIG. 7;

fig. 12 shows a partial schematic structure of fig. 9.

In the drawing the view of the figure,

1. a first waste discharge branch; 2. a second waste discharge branch; 21. a waste water ratio electromagnetic valve; 3. a third waste discharge branch; 4. a user water taking branch; 41. a gooseneck tap; 5. a water storage branch; 51. a water storage device; 6. a first purified water branch; 61. a third filtering device; 62. a pressure stabilizing pump; 7. a second purified water branch; 71. a non-return valve; 72. a fourth filtering device; 8. a water inlet branch; 9. a rinse water branch;

10. A first filtering device; 10-1, a first chamber; 10-11, a first partition; 10-111, a first semi-cylindrical structure; 10-112, a first diverter plate; 10-2, a second chamber; 10-21, a second partition; 10-211, a second semi-cylindrical structure; 10-212, a second splitter plate; 10-3, a shell; 10-31, separating structure; 10-32, a filter flask; 10-33, a first end structure; 10-331, a first nozzle; 10-332, a second nozzle; 10-333, a third nozzle; 10-334, a fourth nozzle; 10-335, a fifth nozzle; 10-336, a sixth nozzle; 10-4, a filtering structure; 10-5, a membrane shell; 10-51, a cylindrical structure; 10-511, water passing through holes; 10-52, a second end structure; 10-521, a first port; 10-522, second port; 10-53 parts of ultrafiltration membrane wires; 10-54, end socket;

20. a second filtering device;

30. a switching device; 30-1, a first switching unit; 30-2, a second switching unit; 30-3, a third switching unit; 30-4, a fourth switching unit.

Detailed Description

The present invention is described below based on examples, but the present invention is not limited to only these examples. Well-known methods, procedures, flows, and components have not been described in detail so as not to obscure the nature of the invention.

Moreover, those of ordinary skill in the art will appreciate that the drawings are provided herein for illustrative purposes and that the drawings are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, it is the meaning of "including but not limited to".

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The application provides a water treatment system, referring to fig. 1 and 3, the water treatment system comprises a first filter device 10, for example, the first filter device 10 comprises an ultrafiltration membrane filter core, the first filter device 10 comprises at least two chambers which are independent from each other, a filter structure 10-4 is arranged in each chamber, the water treatment system can form a water making flow path and a flushing flow path, the water treatment system further comprises a switching device 30, the switching device 30 is configured to switch the at least two chambers into the water making flow path and the flushing flow path, namely, the switching device 30 can switch the chambers into the water making flow path, and can switch the chambers into the flushing flow path, for example, the first filter device 10 comprises two chambers, namely, a first chamber 10-1 and a second chamber 10-2, and the switching device 30 enables the first chamber 10-1 and the second chamber 10-2 to switch into the water making flow path and the flushing flow path, so that the flushing of the first chamber 10-1 and the second chamber 10-2 can be realized, the structure is simple and reasonable, the flushing device is easy to clean, the first filter device 10 does not need to be dismounted, the service life of the system is prolonged, and the service life of the system is saved.

The application also provides a filter element structure, and referring to fig. 1 and 2, the filter element structure forms the first filtering device 10, and comprises a shell 10-3, wherein a separation structure 10-31 is arranged inside the shell 10-3, the separation structure 10-31 divides the interior of the shell 10-3 into at least two chambers, such as a first chamber 10-1 and a second chamber 10-2, and a filtering structure 10-4 is arranged in each chamber, so that each chamber can filter water to achieve the effect of purifying water.

Referring to fig. 1 and 2, the housing 10-3 includes a filter flask 10-32 having one end closed and the other end opened, and a first end structure 10-33 provided at the open end of the filter flask 10-32, the first water port 10-331, the second water port 10-332, the third water port 10-333, and the fourth water port 10-334 are all provided on the first end structure 10-33, and the partition structure 10-31 includes a partition plate extending in an axial direction of the filter flask 10-32 and connected to a sidewall of the filter flask 10-32 to divide an inner cavity of the housing 10-3 into a first chamber 10-1 and a second chamber 10-2 independent of each other, ensuring that water flowing through the first chamber 10-1 and the second chamber 10-2 does not interfere with each other.

Referring to fig. 1 and 2, the filter element structure further includes a membrane shell 10-5 sleeved in the filter bottle 10-32, the filter structure 10-4 is disposed in the membrane shell 10-5, preferably, the filter structure 10-4 includes an ultrafiltration membrane wire 10-53, one end of the ultrafiltration membrane wire 10-53 forms a seal head 10-54 by pouring or other fixing methods, and the partition plate passes through the seal head 10-54 to divide the membrane shell 10-5 and the filter structure 10-4 into two parts, wherein one part is located in the first chamber 10-1, and the other part is located in the second chamber 10-2, so as to realize mutual independence of the first chamber 10-1 and the second chamber 10-2.

Referring to fig. 1 and 2, the membrane shell 10-5 includes a tubular structure 10-51 with two open ends and a second end structure 10-52 disposed at one of the open ends of the tubular structure 10-51, it should be noted that the tubular structure 10-51 may be a cylindrical structure, a square tubular structure or a polygonal tubular structure, etc., the second end structure 10-52 is provided with a first port 10-521 and a second port 10-522, the first port 10-521 is in communication with the second water port 10-332, the second port 10-522 is in communication with the fourth water port 10-334, preferably the second end structure 10-52 is located at one side of the membrane shell 10-5 near the first end structure 10-33, so that the first port 10-521 is more conveniently communicated with the second water port 10-332, the second port 10-522 is more conveniently communicated with the fourth water port 10-334, a part of one end structure of the separator plate is connected with the second end structure 10-52 to connect the first port 10-521 with the second port 10-52, so as to avoid the second port 10-522 from being in communication with the other end of the first port 10-33, and a separation chamber 2-32 is further separated from the other end of the filter bottle, and the other end of the filter membrane shell 10-5 is separated from the first port 10-32 and the other end chamber 2-32 is separated from the other end of the filter chamber 2. It should be noted that, the connection modes of the partition plate and the second end structure 10-52, the closed end of the partition plate and the filter flask 10-32, the second end structure 10-52 and the first end structure 10-33, and the second end structure 10-52 and the tubular structure 10-51 include a snap connection, a sealing ring connection, a threaded connection, an adhesive connection, a welding connection or a connection through a fastener, so as to ensure the stability and reliability of the integral structure of the filter core structure, better ensure the mutual independence of water flow between the first chamber 10-1 and the second chamber 10-2, and avoid the mutual influence between the water flow in the first chamber 10-1 and the second chamber 10-2.

Preferably, referring to fig. 1 and 2, the tubular structure 10-51 is provided with a water through hole 10-511, so that water flows out of the tubular structure 10-51, so as to further ensure smooth circulation of water in the first chamber 10-1 and the second chamber 10-2, more preferably, the inner side wall and/or the outer side wall of the tubular structure 10-51 is provided with a protrusion and/or a groove structure, and the protrusion and/or the groove structure preferably extends along the spiral line direction, so that the disturbance state of water in the tubular structure can be increased, the intensity of water flow flushing the membrane filaments can be improved, the cleaning effect can be improved, and the pollution degree of the membrane filaments can be reduced.

Referring to fig. 1 and 2, one of the first water gap 10-331 and the second water gap 10-332 is communicated with the space on the upstream side of the filtering structure 10-4 in the first chamber 10-1, and the other is communicated with the space on the downstream side of the filtering structure 10-4 in the first chamber 10-1, so that water flow can enter the first chamber 10-1 from the first water gap 10-331, flow out of the first chamber 10-1 from the second water gap 10-332 after being filtered by the filtering structure 10-4, or flow into the first chamber 10-1 from the second water gap 10-332 and flow out of the first chamber 10-1 from the first water gap 10-331 after being filtered by the filtering structure 10-4, thereby realizing the filtering of water flowing through the first chamber 10-1 and achieving the effect of purifying water.

Referring to fig. 1 and 2, similarly to the first chamber 10-1, one of the third water gap 10-333 and the fourth water gap 10-334 is communicated with the upstream side space of the filter structure 10-4 in the second chamber 10-2, and the other is communicated with the downstream side space of the filter structure 10-4 in the second chamber 10-2, thereby achieving the effect of filtering water flowing through the second chamber 10-2 to purify the water.

It will be appreciated that an external pressure type filter structure may be formed in the first chamber 10-1 and the second chamber 10-2, or an internal pressure type filter structure may be formed. In the embodiment shown in fig. 1, when the external pressure type filtering structure is formed in the first chamber 10-1 and the second chamber 10-2, if the first chamber 10-1 is a water making chamber, the second chamber 10-2 is a flushing chamber, the first water gap 10-331 is a raw water inlet, the second water gap 10-332 is a purified water outlet, the fourth water gap 10-334 is a flushing water inlet, the third water gap 10-333 is a waste water outlet, if the first chamber 10-1 is a flushing chamber, the second chamber 10-2 is a water making chamber, the third water gap 10-333 is a raw water inlet, the fourth water gap 10-334 is a purified water outlet, the second water gap 10-332 is a flushing water inlet, and the first water gap 10-331 is a waste water outlet.

When the internal pressure type filtering structure is formed in the first chamber 10-1 and the second chamber 10-2, if the first chamber 10-1 is a water making chamber, the second chamber 10-2 is a flushing chamber, the second water gap 10-332 is a raw water inlet, the first water gap 10-331 is a purified water outlet, the third water gap 10-333 is a flushing water inlet, the fourth water gap 10-334 is a waste water outlet, if the first chamber 10-1 is a flushing chamber, the second chamber 10-2 is a water making chamber, the fourth water gap 10-334 is a raw water inlet, the third water gap 10-333 is a purified water outlet, the first water gap 10-331 is a flushing water inlet, and the second water gap 10-332 is a waste water outlet.

Referring to fig. 3 and 6, the water treatment system includes a water inlet branch 8, a first waste discharge branch 1 and a first purified water branch 6, the switching device 30 includes a first switching unit 30-1 and a second switching unit 30-2, the first switching unit 30-1 and the second switching unit 30-2 are, for example, change valves, the first switching unit 30-1 is used to switch the water inlet branch 8 and the first waste discharge branch 1 between the first water gap 10-331 and the third water gap 10-333, that is, the first switching unit 30-1 may enable the water inlet branch 8 to be communicated with the first water gap 10-331 while enabling the first waste discharge branch 1 to be communicated with the third water gap 10-333, or enable the water inlet branch 8 to be communicated with the first water gap 10-331 while enabling the first waste discharge branch 1 to be communicated with the third water gap 10-333; the second switching unit 30-2 is configured such that the second water gap 10-332 communicates with the fourth water gap 10-334, the second water gap 10-332 communicates with the first purified water branch 6, and the fourth water gap 10-334 communicates with the first purified water branch 6. When the second water gap 10-332 is in communication with the fourth water gap 10-334, the filter element structure may be backwashed with purified water (described in detail below).

Further, referring to fig. 3, a third filtering device 61 and a pressure stabilizing device, for example, a pressure stabilizing pump 62 are further disposed on the first purifying branch 6 of the water treatment system, the third filtering device 61 includes, for example, an activated carbon filter core, further performs purifying treatment on the purified water treated by the first filtering device 10, the pressure stabilizing pump 62 stabilizes the water treatment system to ensure that there is enough water pressure in the water treatment system, so as to ensure the normal operation of the water treatment system, and a gooseneck faucet 41 is disposed at the water taking end of the user of the water treatment system, so as to provide convenience for the user to take water.

Referring to fig. 3 and 6, the water treatment system has a first water making mode, a second water making mode, a first flushing mode, and a second flushing mode.

In the first water making mode, the first switching unit 30-1 is controlled to communicate the water inlet branch 8 with the first water gap 10-331, the second switching unit 30-2 is controlled to communicate the second water gap 10-332 with the first purified water branch 6, at this time, raw water enters the first chamber 10-1 through the first water gap 10-331 via the water inlet branch 8, raw water is filtered to generate purified water through the first chamber 10-1, and purified water processed by the first chamber 10-1 enters the first purified water branch 6 through the second water gap 10-332 for users to use.

In the first flushing mode, the first switching unit 30-1 is controlled to communicate the first waste discharge branch 1 with the third water gap 10-333, the water inlet branch 8 is controlled to communicate the first water gap 10-331, the second switching unit 30-2 is controlled to communicate the second water gap 10-332 with the fourth water gap 10-334, at this time, the purified water filtered by the first chamber 10-1 is discharged from the second water gap 10-332, then enters the second chamber 10-2 through the fourth water gap 10-334, backflushes the filter element structure in the second chamber 10-2, and then is discharged from the water treatment system through the third water gap 10-333 through the first waste discharge branch 1, thereby finishing backflushing the filter element structure in the second chamber 10-2.

In the second water producing mode, the first switching unit 30-1 is controlled to communicate the water inlet branch 8 with the third water gap 10-333, the second switching unit 30-2 is controlled to communicate the fourth water gap 10-334 with the first purified water branch 6, and at this time, raw water is filtered through the second chamber 10-2 to obtain purified water for users.

In the second flushing mode, the first switching unit 30-1 is controlled to communicate the first waste discharge branch 1 with the first water gap 10-331, the water inlet branch 8 is controlled to communicate the third water gap 10-333, the second switching unit 30-2 is controlled to communicate the second water gap 10-332 with the fourth water gap 10-334, at this time, raw water is filtered through the second chamber 10-2 to obtain purified water, then the filter element structure in the first chamber 10-1 is backwashed by the purified water, and backwashed waste water is discharged through the first waste discharge branch 1.

Of course, it will be appreciated that the water for backwashing the filter element structure is not limited to purified water, but may be utilized with other water, such as raw water, or with water on other branches in a water system.

In a preferred embodiment, referring to fig. 5, the water treatment apparatus further comprises a flushing water branch 9 and a water storage device 51 communicating with the flushing water branch 9, the water storage device 51 is, for example, a pressurized water bucket, the water storage device 51 may provide temporary water for a user, the water storage device 51 may be connected to the first purified water branch 6 through the water storage branch 5, or, as shown in fig. 4, the water outlet of the first purified water branch 6 is communicated with the water inlet of the second filtering device 20, the water outlet of the second filtering device 20 is communicated with the second waste branch 2, the waste water generated after passing through the second filtering device 20 is discharged, the water purifying port of the second filtering device 20 is communicated with the second purified water branch 7, a check valve 71 is provided at a position of the second purified water branch 7 close to the second filtering device 20, and in the first water producing mode, the check valve 71 is provided behind the check valve 71 on the second purified water branch 7 in the water flow direction, and the check valve 71 can effectively prevent the water on the second purified water branch 7 from flowing back into the second filtering device 20. The water storage means 51 may also be used to provide flushing water for the first and second chambers 10-1 and 10-2 for flushing the first and second chambers 10-1 and 10-2. The switching device 30 further comprises a third switching unit 30-3, the third switching unit 30-3 being adapted to switch the second water gap 10-332 and the fourth water gap 10-334 between the first purified water branch 6 and the flushing water branch 9.

In a first water making mode, the purified water obtained by filtering through the first chamber 10-1 is partially used by a user, and the other part is stored in the water storage device 51, and in a first flushing mode, the first switching unit 30-1 is controlled to communicate the first waste discharge branch 1 with the third water gap 10-333, the second switching unit 30-2 is controlled to communicate the fourth water gap 10-334 with the flushing water branch 9, flushing water is provided for flushing the second chamber 10-2 through the water storage device 51, and the second chamber 10-2 is flushed; in the second water making mode, the second chamber 10-2 is filtered to obtain purified water, one part of the purified water is used by a user, the other part of the purified water is stored in the water storage device 51, in the second flushing mode, the first switching unit 30-1 is controlled to communicate the first waste discharging branch 1 with the first water gap 10-331, the second switching unit 30-2 is controlled to communicate the second water gap 10-332 with the flushing water branch 9, flushing water is provided for flushing the first chamber 10-1 through the water storage device 51, and the first chamber 10-1 is flushed. It should be noted that in the preferred embodiment, the first flushing mode and the first water making mode may be operated simultaneously or not, and the second flushing mode and the second water making mode may be operated simultaneously or not, so that when the first chamber 10-1 or the second chamber 10-2 needs to be flushed, the water treatment system simultaneously makes water, and the water consumption of the user is not affected, so that the requirements of the user can be better satisfied.

In another preferred embodiment, referring to fig. 4, the water treatment system further includes a second filter device 20, and the second filter device 20 includes, for example, a reverse osmosis membrane filter, and further purifies the purified water obtained after the treatment by the first filter device 10, so that the user obtains water with better quality. The water outlet of the first purified water branch 6 is communicated with the water inlet of the second filtering device 20, the waste water port of the second filtering device 20 is connected with the second waste discharge branch 2, a waste water ratio electromagnetic valve 21, preferably an adjustable waste water ratio electromagnetic valve 21, is arranged on the second waste discharge branch 2 so as to better control the waste water ratio and ensure the normal operation of the water treatment system, the flushing water branch 9 is communicated with the second waste discharge branch 2, the waste water generated by the second filtering device 20 is used for providing flushing water for a first flushing mode and a second flushing mode, the waste water is reasonably utilized, the waste water is prevented from being wasted, and the first chamber 10-1 and the second chamber 10-2 are flushed, so that the water is saved.

At this time, in the first flushing mode, the first switching unit 30-1 is controlled to communicate the first waste discharge branch 1 with the third water gap 10-333, the second switching unit 30-2 is controlled to communicate the fourth water gap 10-334 with the flushing water branch 9, raw water is filtered through the first chamber 10-1 to obtain purified water, the purified water enters the second filtering device 20 through the first purified water branch 6 to be treated again, the obtained secondary purified water is used for a user to use, the secondary waste water generated through the second filtering device 20 enters the flushing water branch 9 through the second waste discharge branch 2 to be used as flushing water for flushing the second chamber 10-2, the flushing water enters the second chamber 10-2 through the fourth water gap 10-334, is discharged from the second chamber 10-2 through the third water gap 10-333, and is discharged through the first waste discharge branch 1 to finish flushing the second chamber 10-2. It should be noted that, in the first flushing mode, the first water making mode is also in an operation state so as to ensure water consumption of the user. The basic principle of the second flushing mode is the same as that of the first flushing mode, and the description is omitted.

Further, referring to FIGS. 7 and 8, in order to achieve a positive flushing of the filter structure in the first filter device 10, the first filter device 10 further comprises a fifth water gap 10-335 and a sixth water gap 10-336 on the first end structure 10-33, the fifth water gap 10-335 being arranged on the first chamber 10-1, the fifth water gap 10-335 and the first water gap 10-331 being in communication with the same side space of the filter structure 10-4 of the first chamber 10-1, the sixth water gap 10-336 being arranged on the second chamber 10-2, the sixth water gap 10-336 and the third water gap 10-333 being in communication with the same side space of the filter structure 10-4 of the second chamber 10-2, a first partition 10-11 being arranged in the first chamber 10-1, a second partition 10-21 being arranged in the second chamber 10-2, the first partition 10-11 being arranged between the membrane shell 10-5 and the housing 10-3 and being connected to the first end structure 10-3, the fifth water gap 10-333 being in communication with the same side space of the filter structure 10-4 of the second chamber 10-2, the fifth water gap 10-33 being further separated from the first water gap 10-1 by a further separation between the first partition 10-11 and the fifth water gap 10-1 and the fifth water gap 10-2 being arranged in the second chamber 10-2 and the second partition 10-1, to ensure that flushing of the second chamber 10-2 is better completed in a third flushing mode (described in more detail below).

Referring to fig. 7 and 8, the first partition 10-11 includes a first semi-cylindrical structure 10-111, one end of the first semi-cylindrical structure 10-111 is connected to the first end structure 10-33, and the other end is provided with a first diverter plate 10-112, and in the radial direction of the first semi-cylindrical structure 10-111, the radially inner end of the first diverter plate 10-112 is located between the diverter plate and the membrane shell 10-5 to better ensure that water flows through the first water gap 10-331 into the first chamber 10-1, so that the water flows through the water through holes 10-511 into the filter structure 10-4 due to the existence of the first plate cylindrical structure 10-51, and then the ultrafiltration membrane wires 10-53 are rinsed, so that the water flows better through the space between the first diverter plate 10-112 and the membrane shell 10-5, and then flows out of the first chamber 10-1 through the fifth water gap 10-335, thereby completing the rinsing of the filter structure 10-4 in the first chamber 10-1. The second partition portion 10-21 includes a second semi-cylindrical structure 10-211, one end of the second semi-cylindrical structure 10-211 is connected to the first end portion structure 10-33, the other end is provided with a second flow dividing plate 10-212, in the radial direction of the second semi-cylindrical structure 10-211, the radial inner end of the second flow dividing plate 10-212 is located between the partition plate and the membrane shell 10-5, and the function of the second cylindrical structure 10-51 relative to the second chamber 10-2 is the same as the function of the first cylindrical structure 10-51 relative to the first chamber 10-1, which is not repeated.

Referring to fig. 9 and 12, the water treatment system using the first filtering device 10 further includes a third waste discharge branch 3, the switching device 30 further includes a fourth switching unit 30-4, and the fourth switching unit 30-4 is configured to switch the third waste discharge branch 3 between the fifth water gap 10-335 and the sixth water gap 10-336, where the water treatment system includes a first water making mode, a second water making mode, a first flushing mode, a second flushing mode, a third flushing mode and a fourth flushing mode, and the basic principles of the first water making mode, the second water making mode, the first flushing mode and the second flushing mode are substantially the same as those of the embodiments shown in fig. 3 to 5, and are not repeated. It will be appreciated that when the first filter device 10 of this structure is used, the first flushing mode and the second flushing mode may be flushing with clean water (see fig. 9), flushing with water in the water storage device 51 (see fig. 10), or flushing with waste water discharged from the second filter device 20 (see fig. 11).

In the third flushing mode, the first switching unit 30-1 is controlled to communicate the water inlet branch 8 with the third water gap 10-333, the fourth switching unit 30-4 is controlled to communicate the third waste discharge branch 3 with the sixth water gap 10-336, water is fed through the third water gap 10-333, water is discharged from the sixth water gap 10-336, and forward flushing is performed on the ultrafiltration membrane filaments 10-53 in the second chamber 10-2.

In the fourth flushing mode, the first switching unit 30-1 is controlled to communicate the water inlet with the first water gap 10-331, the fourth switching unit 30-4 is controlled to communicate the third waste discharge branch 3 with the fifth water gap 10-335, water is fed through the first water gap 10-331, and then water is discharged through the fifth water gap 10-335, so that the ultrafiltration membrane filaments 10-53 in the first chamber 10-1 are positively flushed.

Preferably, referring to fig. 3 to 5 and 9 to 11, the water treatment system further comprises a fourth filtering device 72, for example a post-filter element, positioned on the second purified water branch 7 to better ensure the quality of the water used by the user, the fourth filtering device 72 being a post-filter element or the like.

It is easy to understand by those skilled in the art that the above preferred embodiments can be freely combined and overlapped without conflict.

It will be understood that the above-described embodiments are merely illustrative and not restrictive, and that all obvious or equivalent modifications and substitutions to the details given above may be made by those skilled in the art without departing from the underlying principles of the invention, are intended to be included within the scope of the appended claims.

Claims

1. A water treatment system is characterized by comprising a first filtering device, wherein the first filtering device comprises at least two chambers and a shell which are mutually independent, a separation structure is arranged in the shell, the interior of the shell is separated into the at least two chambers by the separation structure, a filtering structure is arranged in each chamber, the shell comprises a filter bottle with one end being closed and the other end being open, and a first end structure arranged at the open end of the filter bottle, a first water port, a second water port, a third water port and a fourth water port are all arranged on the first end structure, the separation structure comprises a separation plate, the separation plate extends along the axial direction of the shell and is connected with the side wall of the filter bottle so as to divide the inner cavity of the shell into a first chamber and a second chamber which are mutually independent,

The water treatment system is capable of forming a water making flow path and a flushing flow path, and further comprises a switching device configured to enable switching of the at least two chambers into the water making flow path and the flushing flow path; the at least two chambers include a first chamber and a second chamber,

2. The water treatment system of claim 1, wherein the second switching unit is further configured to enable the second water port to communicate with the fourth water port.

3. The water treatment system of claim 1, further comprising a rinse water leg, the switching device further comprising a third switching unit for switching communication between the first purified water leg and the rinse water leg between the second water leg and the fourth water leg.

4. A water treatment system as claimed in claim 3, further comprising a second filter device, the water outlet of the first purified water leg being in communication with the water inlet of the second filter device, the water outlet of the second filter device being connected to a second waste branch, the flush water leg being in communication with the second waste branch; and/or the number of the groups of groups,

5. A water treatment system according to any one of claims 1 to 4, wherein a fifth water port is provided in the first chamber, the fifth water port and the first water port being in communication with the same side space of the filter structure of the first chamber,

6. A control method of a water treatment system according to claim 2, wherein the water treatment system has a first water making mode, a second water making mode, a first flushing mode, a second flushing mode,

7. A control method of a water treatment system according to claim 3 or 4, wherein the water treatment system has a first water making mode, a second water making mode, a first flushing mode, a second flushing mode,

8. A control method of a water treatment system according to claim 5, wherein the water treatment system has a third rinse mode and a fourth rinse mode,

and in the fourth flushing mode, controlling the first switching unit to communicate the water inlet with the first water gap, and controlling the fourth switching unit to communicate the third waste discharge branch with the fifth water gap.

9. A filter cartridge arrangement for forming a first filter arrangement in a water treatment system according to any one of claims 1 to 5, comprising a housing, the housing being internally provided with a dividing structure dividing the housing interior into said at least two chambers, each of said chambers being internally provided with a filter arrangement; the shell includes that one end seals the open-ended filter flask of the other end and sets up the first end structure of the open end of filter flask, first mouth of a river, second mouth of a river, third mouth of a river and fourth mouth of a river all set up on the first end structure, the separation structure includes the division board, the division board is followed the axial extension of shell and with the lateral wall of filter flask links to each other, so as to with the inner chamber of shell divide into mutually independent first cavity and second cavity.

10. The filter cartridge structure of claim 9, further comprising a membrane shell nested in the filter flask, the filter structure being disposed in the membrane shell, the separator dividing the membrane shell and the filter structure into two portions, one portion being located in the first chamber and the other portion being located in the second chamber.

11. The filter cartridge structure of claim 10, wherein the membrane housing comprises a cylindrical structure having two open ends and a second end structure disposed at an open end of the cylindrical structure, the second end structure being provided with a first port and a second port, the first port being in communication with the second port, the second port being in communication with the fourth port, a portion of the structure of one end of the separator plate being connected to the second end structure to separate the first port from the second port, the other end of the separator plate being connected to the closed end of the filter flask, the other open end of the cylindrical structure being spaced from the closed end of the filter flask.

12. The filter element structure according to claim 11, wherein the cylindrical structure is provided with a water passing through hole; and/or the number of the groups of groups,

13. The cartridge structure of claim 12, wherein the projection and/or recess arrangement extends in a helical direction.

14. The filter cartridge arrangement of claim 13, wherein the filter cartridge arrangement constitutes a first filter arrangement in a water treatment system as claimed in claim 5, a fifth water port and a sixth water port being provided on the first end arrangement,

15. The cartridge structure of claim 14, wherein the first partition comprises a first semi-cylindrical structure having one end connected to the first end structure and the other end provided with a first flow dividing plate, a radially inner end of the first flow dividing plate being located between the partition plate and the membrane shell in a radial direction of the first semi-cylindrical structure; and/or the number of the groups of groups,