CN109231362B - Filter element structure, water treatment system and control method thereof - Google Patents

Abstract

The invention discloses a filter element structure, a water treatment system and a control method of the water treatment system, wherein the filter element structure comprises a shell, the shell comprises a filter bottle with one end closed and the other end open, and an end structure arranged at the open end of the filter bottle, a separation structure is arranged in the shell and divides the interior of the shell into a first cavity, a second cavity and a third cavity, a filter structure is arranged in each cavity, the third cavity is positioned in the middle of the filter bottle in the radial direction of the filter bottle, and the first cavity and the second cavity are positioned at the radial outer side of the third cavity. In this filter core structure, when first cavity was regarded as the water making chamber, the second cavity can be regarded as the washing chamber, and water making chamber and washing chamber can exchange, simple structure is reasonable, easily washs.

Description

Filter element structure, water treatment system and control method thereof

Technical Field

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

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 filter element structure, a water treatment system and a control method thereof, 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:

the utility model provides a filter core structure, includes the shell, the shell includes that one end seals the open-ended filter flask of the other end and sets up the end structure of the open end of filter flask, the inside partition structure that is provided with of shell, partition structure will the shell internal partition becomes first cavity, second cavity and third cavity all are provided with filtration in every cavity in the radial of filter flask, the third cavity is located the middle part of filter flask, first cavity with the second cavity is located the radial outside of third cavity.

Preferably, the separation structure comprises a first cylindrical structure with two open ends, one end of the first cylindrical structure is connected with the end structure, the other end of the first cylindrical structure is connected with the closed end of the filter bottle, the end structure, the inner side surface of the first cylindrical structure and the closed end of the filter bottle enclose to form the third chamber, and the end structure, the outer side surface of the first cylindrical structure and the closed end of the filter bottle enclose to form the first chamber and the second chamber.

Preferably, the separation structure further comprises a separation plate, and the separation plate extends along the axial direction of the filter flask and is connected with the side wall of the filter flask and the outer side wall of the first cylindrical structure so as to divide a space formed by enclosing the end part structure, the outer side surface of the first cylindrical structure and the closed end of the filter flask into the first chamber and the second chamber which are mutually independent.

Preferably, the filter element structure further comprises a membrane shell sleeved between the first cylindrical structure and the filter flask, the filter structure is arranged in the membrane shell, the membrane shell comprises a second cylindrical structure with two open ends, one open end of the second cylindrical structure is connected with the end structure, and a space is reserved between the other open end and the closed end of the filter flask.

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

and the inner side wall and/or the outer side wall of the second 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, the third chamber is internally provided with an internal pressure type filtering structure, and the shell is provided with a water inlet and a purified water outlet which are communicated with the third chamber, or,

An external pressure type filtering structure is formed in the third chamber, and a water inlet, a purified water outlet and a concentrated water outlet which are communicated with the third chamber are arranged on the shell.

Preferably, an internal pressure type filtering structure is formed in the third chamber, the filter element structure comprises a water inlet pipe, the water inlet pipe is communicated with the water inlet, a part of the water inlet pipe is inserted into the third chamber, a plurality of water outlet holes are arranged on the water inlet pipe, the water outlet holes are distributed along the axial direction and/or the radial direction of the water inlet pipe, or,

an external pressure type filtering structure is formed in the third cavity, the filter element structure comprises an adapter and a water outlet pipe, the filtering structure in the third cavity is connected with the end structure through the adapter, and the water outlet pipe is communicated with the purified water outlet.

Preferably, the end structure is provided with a first water gap and a second water gap which are communicated with the first chamber, one of the first water gap and the second water gap is communicated with the upstream side space of the filtering structure in the first chamber, and the other one of the first water gap and the second water gap is communicated with the downstream side space of the filtering structure in the first chamber; and/or the number of the groups of groups,

a third water gap and a fourth water gap which are communicated with the second chamber are arranged on the end part structure, one of the third water gap and the fourth water gap is communicated with the space on the upstream side of the filtering structure in the second chamber, and the other one of the third water gap and the fourth water gap is communicated with the space on the downstream side of the filtering structure in the second chamber; and/or the number of the groups of groups,

An internal pressure type filtering structure is formed in the third chamber, and the water inlet and the purified water outlet are arranged on the end structure; and/or the number of the groups of groups,

and an external pressure type filtering structure is formed in the third chamber, and the water inlet, the purified water outlet and the concentrated water outlet are arranged on the end structure.

Preferably, the cartridge structure disposed within the first chamber comprises an ultrafiltration structure; and/or the number of the groups of groups,

the filter element structure arranged in the second cavity comprises an ultrafiltration structure; and/or the number of the groups of groups,

the filter element structure arranged in the third cavity comprises a carbon filter element or a reverse osmosis filter element.

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

the water treatment system comprises a first filter device, wherein the first filter device is of the filter element structure, the water treatment system can form a water making flow path and a flushing flow path, and the water treatment system further comprises a switching device, and the switching device is configured to switch the first chamber and the second chamber into the water making flow path and the flushing flow path, and switch the third chamber into the water making flow path.

Preferably, the switching device is configured to switch the third chamber into a downstream side of the first chamber or the second chamber located on the water-making flow path.

Preferably, an external pressure type filtering structure is formed in the third chamber, the water treatment system comprises a water inlet branch, a first waste discharge branch, a second waste discharge branch, a first purified water branch and a connecting branch, the purified water outlet is communicated with the first purified water branch, the water inlet is communicated with a first port of the connecting branch, the concentrated water outlet is communicated with the second waste discharge 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 to be communicated with a second port of the connecting branch.

Preferably, the second switching unit is further configured to enable the second nozzle to communicate with the fourth nozzle; or alternatively, the process may be performed,

the second switching unit is further configured to be able to switch the second water gap and the fourth water gap in communication between the second port of the connecting branch and the second waste discharge branch.

Preferably, the water treatment apparatus further includes a wash water branch, and the second switching unit is further configured to switch communication between the second water port of the connection branch and the wash water branch.

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

Preferably, the connecting branch is provided with a voltage stabilizing device; and/or the number of the groups of groups,

and a second filtering device is arranged on the connecting branch.

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

a control method of a water treatment system as described above, the second switching unit further configured to enable the second water port to communicate with the fourth water port, the water treatment system having 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 second port of the connecting 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 second port of the connecting 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.

Preferably, the second switching unit is further configured to switch the second water gap and the fourth water gap between the second port of the connecting branch and the second waste branch, 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 second port of the connecting branch;

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 second waste discharge branch;

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 second port of the connecting 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 second waste discharge branch.

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 second port of the connecting branch;

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;

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 second port of the connecting 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.

According to the filter element structure, the water treatment system and the control method of the water treatment system, in the filter element structure, when the first cavity is used as the water making cavity, the second cavity can be used as the flushing cavity, and the water making cavity and the flushing cavity can be interchanged, so that the filter element structure is simple and reasonable in structure and easy to clean, 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.

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 is a schematic view showing the construction of a water treatment system according to a first embodiment of the present invention;

FIG. 2 is a schematic view showing the construction of a water treatment system according to a second embodiment of the present invention;

FIG. 3 is a schematic view showing the construction of a water treatment system according to a third embodiment of the present invention;

FIG. 4 shows a partial view of the application of FIG. 3;

FIG. 5 shows a longitudinal cross-sectional view of the cartridge structure provided by the present invention;

Fig. 6 shows a cross-sectional view of a cartridge structure provided by the present invention.

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 rinse water 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 non-return valve; 7. a second purified water branch; 71. a third filtering device; 8. a water inlet branch; 9. a connection branch; 91. a pressure stabilizing pump; 92. a second filtering device;

10. a first filtering device; 10-1, a first chamber; 10-2, a second chamber; 10-3, a shell; 10-31, separating structure; 10-311, a first cylindrical structure; 10-312, separating plate; 10-32, a filter flask; 10-33, end structure; 10-331, a first nozzle; 10-332, a second nozzle; 10-333, a third nozzle; 10-334, a fourth nozzle; 10-335, water inlet; 10-336, purified water outlet; 10-337, a concentrated water outlet; 10-4, a filtering structure; 10-5, a membrane shell; 10-51, a second cylindrical structure; 10-511, water passing through holes; 10-52 parts of ultrafiltration membrane wires; 10-53 parts of sealing heads; 10-6, a third chamber; 10-71, a water outlet pipe; 10-72, an adapter;

20. a switching device; 20-1, a first switching unit; 20-2, a second switching unit.

Detailed Description

The present application is described below based on examples, but the present application 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 application.

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 filter element structure and a water treatment system using the same, and referring to fig. 1, the water treatment system is applied to a water purifier, for example, and comprises a first filter device 10, wherein the first filter device 10 comprises a first chamber 10-1, a second chamber 10-2 and a third chamber 10-6 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 20, and the switching device 20 is configured to switch the first chamber 10-1 and the second chamber 10-2 into the water making flow path and the flushing flow path, and switch the third chamber 10-6 into the water making flow path. The switching device 20 enables the first chamber 10-1 and the second chamber 10-2 to be switched into the water making flow path and the flushing flow path, so that flushing of the first chamber 10-1 and the second chamber 10-2 can be realized, the structure is simple and reasonable, cleaning is easy, manual flushing is not needed to be carried out on the disassembly of the first filtering device 10, the cleaning difficulty is reduced, the subsequent maintenance cost is saved, the service life of the first filtering device 10 is prolonged, the service life of the water treatment system is prolonged, the use experience of a user is improved, meanwhile, the first filtering device 10 is further provided with the third chamber 10-6, the filtering effect of the first filtering device 10 is further improved, the water purifying effect of the first filtering device 10 is improved, and the water quality of water for the user is improved.

Referring to fig. 5 and 6, the filter cartridge structure according to the present application constitutes the first filtering device 10, in a preferred embodiment, the filter cartridge structure includes a housing 10-3, a partition structure 10-31 is disposed inside the housing 10-3, the partition structure 10-31 partitions the interior of the housing 10-3 into the first chamber 10-1, the second chamber 10-2 and the third chamber 10-6, each chamber is provided with a filtering structure 10-4, the housing 10-3 includes a filter flask 10-32 having one end closed and the other end open, and an end structure 10-33 disposed at the open end of the filter flask 10-32, the end structure 10-33 is provided with a first water gap 10-331, a second water gap 10-332, a third water gap 10-333, a fourth water gap 10-334, a water inlet 10-335 and a purified water outlet 10-336, so that the overall structure of the first filtering device 10 is more compact, the structure is reasonable in layout, the partition structure 10-31 includes a first tubular structure 10-311 having two ends open, for example, a first tubular structure 10-311 is a tubular structure 10-311, a tubular structure 10-311 is connected to the first tubular structure 10-32, the tubular structure 10-33 is connected to the first tubular structure 10-32, the first tubular structure 10-32 is a tubular structure 10-32, and the other end structure 10-33 is connected to the end structure 10-32, and the end structure is connected to the end structure 10-32 The closed end of the filter flask 10-32 encloses the first chamber 10-1 and the second chamber 10-2, the partition structure 10-31 further comprises a partition plate 10-312, and the partition plate 10-312 extends along the axial direction of the filter flask 10-32 and is connected with the side wall of the filter flask 10-32 and the outer side wall of the first tubular structure 10-311, so as to divide the space formed by enclosing the end structure 10-33, the outer side surface of the first tubular structure 10-311 and the closed end of the filter flask 10-32 into the first chamber 10-1 and the second chamber 10-2 which are independent of each other, so as to ensure the mutual independence of the first chamber 10-1, the second chamber 10-2 and the third chamber 10-6.

Preferably, referring to fig. 5 and 6, the filter cartridge structure further comprises a membrane housing 10-5 sleeved between the first cylindrical structure 10-311 and the filter flask 10-32, a part of the membrane housing 10-5 is located in the first chamber 10-1, a part of the membrane housing 10-4 is located in the second chamber 10-2, the filter structures 10-4 in the first chamber 10-1 and the second chamber 10-2 are disposed in the membrane housing 10-5, preferably, the filter structures 10-4 are ultrafiltration structures, including ultrafiltration membrane wires 10-52, one ends of the ultrafiltration membrane wires 10-52 form a seal head 10-53 by casting or other fixing means, the first cylindrical structure 10-311 passes through the seal head 10-53 to divide the membrane housing 10-5 and the filter structures 10-4 into two parts, wherein a part of the filter structures 10-4 are located in the first chamber 10-1, the other part is located in the second chamber 10-2 to realize a filtration system of the first chamber 10-1 and the second chamber 10-2 independent from each other, the membrane shell 10-5 comprises a second tubular structure 10-51 with two open ends, the second tubular structure 10-51 is a tubular structure, a square tubular structure or a polygonal tubular structure, etc., one open end of the second tubular structure 10-51 is connected with the end structure 10-33, a space is arranged between the other open end and the closed end of the filter flask 10-32 to ensure the circulation of water flow inside and outside the second tubular structure 10-51, more preferably, the second tubular structure 10-51 is provided with a water through hole 10-511 to better ensure the circulation of water flow inside and outside the second tubular structure 10-51, and, be provided with protruding and/or recess structure on the inside wall and/or the lateral wall of second tubular structure 10-51, protruding and/or recess structure extends along the helix direction, can increase the disturbance state of rivers in second tubular structure 10-51, improves the intensity degree that rivers erode milipore filter silk 10-52, improves the cleaning performance, reduces the pollution degree of milipore filter silk 10-52.

An internal pressure type filtering structure can be formed in the third chamber 10-6, a water inlet 10-335 communicated with the third chamber 10-6 and a purified water outlet 10-336 are arranged on the shell 10-3, the filtering core structure comprises a water inlet pipe, the water inlet pipe comprises a connecting pipe communicated with the water inlet 10-335 on the end structure 10-33, the connecting mode of the connecting pipe and the end structure 10-33 comprises a fastening connection, a threaded connection, a sealing ring connection, an adhesive connection or a welding connection, and the like, the water inlet pipe further comprises a central pipe inserted into the third chamber 10-6, a plurality of water outlet holes are arranged on the central pipe, the water outlet holes are distributed along the axial direction and/or the radial direction of the central pipe so as to ensure that water flows better in the third chamber 10-6, the further purification treatment is preferably carried out in that the filter structure 10-4 in the third chamber 10-6 comprises a carbon filter cartridge 10-61, for example an activated carbon or a carbon rod or the like, the central tube being located in the radial centre of the carbon filter cartridge, the central tube dividing the carbon filter cartridge substantially in two parts, one part being close to the first chamber 10-1 and the other part being located in the second chamber 10-2, to ensure a better purification treatment of the water entering the third chamber 10-6, to ensure a smooth flow of water between the central tube and the carbon filter cartridge, since only one purified water outlet 10-336 is provided in the third chamber 10-6, said purified water outlet 10-336 being located either on the side close to the first chamber 10-1 or on the side close to the second chamber 10-2, to ensure a better water outlet, a certain interval is reserved between one end of the carbon filter element, which is axially close to the closed end of the filter flask 10-32, and the closed end of the filter flask 10-32, so that purified water purified by the carbon filter element can smoothly flow out of the third chamber 10-6 from the purified water outlet 10-336.

In addition, referring to fig. 5 and 6, the third chamber 10-6 may further form an external pressure type filtering structure, for example, it includes a reverse osmosis membrane filter core, a water inlet 10-335, a purified water outlet 10-336 and a concentrated water outlet 10-337 which are connected with the third chamber 10-6 are disposed on the end structure 10-33 of the housing 10-3, at this time, the filter core structure includes an adapter 10-72 and a water outlet 10-71, one end of the adapter 10-72 is fixedly connected with the reverse osmosis membrane filter core, the other end is fixedly connected with the end structure 10-33, the water outlet 10-71 at least partially extends into the reverse osmosis membrane filter core and passes through the adapter 10-72, and is communicated with the purified water outlet 10-336, so that the structure in the third chamber 10-6 is more stable and reliable, and normal use of the third chamber 10-6 is ensured, in addition, a concentrated water gap is further disposed on the adapter 10-72, which is communicated with the concentrated water outlet 10-337 on the end structure 10-33, water enters the third chamber 10-6 from the water inlet 10-72, and is filtered and purified by the reverse osmosis membrane filter core, a part of the purified water is generated, and the purified water flows out from the other concentrated water outlet 10-6 through the other end 10-6. The connection mode of the adapter 10-72, the end structure 10-33 and the reverse osmosis membrane filter element includes a snap connection, a screw connection, a sealing ring connection, an adhesive connection or a welding connection.

Preferably, in the water treatment system of the present application, referring to fig. 1 and 6, the switching device 20 is configured to connect the third chamber 10-6 to the downstream side of the first chamber 10-1 or the second chamber 10-2 located on the water making flow path, that is, the water entering the third chamber 10-6 is the water purified by the first chamber 10-1 or the second chamber 10-2, so that damage to the carbon filter 10-61 in the third chamber 10-6 is reduced, and the service life of the carbon filter 10-61 is prolonged. In summary, the first chamber 10-1 and the second chamber 10-2 are alternately switched to be connected to the flushing flow path, so that the first chamber 10-1 and the second chamber 10-2 are alternately cleaned, the service lives of the first chamber 10-1 and the second chamber 10-2 are prolonged, then water flows through the first chamber 10-1 or the second chamber 10-2 for purification treatment, then enters the third chamber 10-6 for purification treatment, and the service life of the third chamber 10-6 is prolonged, so that the overall service life of the first filtering device 10 is prolonged, and the cost is reduced.

Referring to fig. 1 and 6, a first water gap 10-331 and a second water gap 10-332 are provided in the first chamber 10-1, one of the first water gap 10-331 and the second water gap 10-332 is communicated with an upstream side space of the filtering structure 10-4 in the first chamber 10-1, and the other is communicated with a downstream side space 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 and then flow out of the first chamber 10-1 from the second water gap 10-332, or flow out of 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, thereby realizing the effect of filtering water flowing through the first chamber 10-1 to purify the water; the second chamber 10-2 is provided with a third water gap 10-333 and a fourth water gap 10-334, one of the third water gap 10-333 and the fourth water gap 10-334 is communicated with the space on the upstream side of the filtering structure 10-4 in the second chamber 10-2, and the other is communicated with the space on the downstream side of the filtering structure 10-4 in the second chamber 10-2, so that the effect of filtering water flowing through the second chamber 10-2 to purify the water is realized; the third chamber 10-6 is provided with a water inlet 10-335 and a purified water outlet 10-336, and after water flows out of the first chamber 10-1 or the second chamber 10-2, the water enters the third chamber 10-6 through the water inlet 10-335 and then flows out of the third chamber 10-6 from the purified water outlet 10-336, so that further purification is completed.

As shown in fig. 6, 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. When the external pressure type filtering structure is formed in the first chamber 10-1 and the second chamber 10-2, the first water gap 10-331 is an inlet of the first chamber 10-1, the second water gap 10-332 is an outlet of the first chamber 10-1, the third water gap 10-333 is an inlet of the second chamber 10-2, and the fourth water gap 10-334 is an outlet of the second chamber 10-2. And when the internal pressure type filtering structure is formed in the first chamber 10-1 and the second chamber 10-2, the first water gap 10-331 and the third water gap 10-333 are outlets, and the second water gap 10-332 and the fourth water gap 10-334 are inlets. In the following embodiments, the first chamber 10-1, the second chamber 10-2 and the third chamber 10-6 are each constructed as an external pressure type filter structure.

Referring to fig. 1 and 6, the water treatment system includes a water inlet branch 8, a first waste branch 1, a first purified water branch 6, and a connection branch 9, the purified water outlet 10-336 communicates with the first purified water branch 6, the water inlet 10-335 communicates with a first port of the connection branch 9, the switching device 20 includes a first switching unit 20-1 and a second switching unit 20-2, the first switching unit 20-1 is used to switch the water inlet branch 8 and the first waste branch 1 between the first water port 10-331 and the third water port 10-333, the second switching unit 20-2 is configured to enable the second water port 10-332 to communicate with a second port of the connection branch 9, and the second water port 10-332 to communicate with the fourth water port 10-334, such that 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 20-1 is controlled to communicate the water inlet branch 8 with the first water port 10-331, the second switching unit 20-2 is controlled to communicate the second water port 10-332 with the second port of the connecting branch 9, at the first filtering device 10, water flow in the water treatment system enters the first chamber 10-1 from the first water port 10-331 through the water inlet branch 8, then flows out from the second water port 10-332, finishes the first purifying treatment of the water, enters the connecting branch 9 from the second port of the connecting branch 9, flows out from the first port, then enters the third chamber 10-6 through the water inlet 10-335, flows out from the purified water outlet 10-336, finishes the second purifying treatment of the water, and then enters the first purified water branch 6.

In the first flushing mode, the first switching unit 20-1 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 second water gap 10-332 with the fourth water gap 10-334, and at the first filtering device 10, water flow in the water treatment system enters the first chamber 10-1 from the first water gap 10-331 through the water inlet branch 8, then flows out from the second water gap 10-332, then enters the second chamber 10-2 from the fourth water gap 10-334, then flows out from the third water gap 10-333, and finally flows out from the water treatment system through the first waste discharge branch 1, so that flushing of the second chamber 10-2 is completed.

In the second water making mode, the first switching unit 20-1 is controlled to communicate the water inlet branch 8 with the third water port 10-333, the second switching unit 20-2 is controlled to communicate the fourth water port 10-334 with the second port of the connecting branch 9, at the first filtering device 10, water flow in the water treatment system enters the second chamber 10-2 from the third water port 10-333 through the water inlet branch 8, then flows out from the fourth water port 10-334, finishes the first purifying treatment of the water, enters the connecting branch 9 from the second port of the connecting branch 9, then flows out from the first port, enters the third chamber 10-6 through the water inlet 10-335, flows out from the purified water outlet 10-336, finishes the second purifying treatment of the water, and then flows into the first purified water branch 6.

In the second flushing mode, the first switching unit 20-1 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 second water gap 10-332 with the fourth water gap 10-334, at the first filtering device 10, water flow in the water treatment system enters the second chamber 10-2 from the third water gap 10-333 through the water inlet branch 8, then flows out from the fourth water gap 10-334, then flows into the second water gap 10-332 from the fourth water gap 10-334 through the second switching device 20, enters the first chamber 10-1, then flows out from the first water gap 10-331, and finally flows out of the water treatment system through the first waste discharge branch 1, thus flushing the first chamber 10-1 is completed.

The first water making mode, the first flushing mode, the second water making mode and the second flushing mode of the water treatment system are sequentially and circularly carried out, so that the first chamber 10-1 and the second chamber 10-2 are alternately flushed, pollutants attached to the surfaces of the ultrafiltration membrane filaments 10-52 are flushed, and the service life of the ultrafiltration membrane structure is prolonged.

In a preferred embodiment, referring to fig. 3 and 6, the water treatment system further comprises a flushing water branch 3 and a water storage means 51 in communication with the flushing water branch 3, such as a pressurized water bucket or a pressurized water bag, etc., which water storage means 51 may be used for providing a user with temporary water, and for providing a first chamber 10-1 and a second chamber 10-2 with flushing water for flushing the first chamber 10-1 and the second chamber 10-2, the second switching unit 20-2 being further configured to be able to switch the communication between said second water gap 10-332 and said fourth water gap 10-334 between the second port of said connection branch 9 and said flushing water branch 3.

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 20-1 is controlled to communicate the first waste discharge branch 1 with the third water gap 10-333, the second switching unit 20-2 is controlled to communicate the fourth water gap 10-334 with the flushing water branch 3, 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 20-1 is controlled to communicate the first waste discharging branch 1 with the first water gap 10-331, the second switching unit 20-2 is controlled to communicate the second water gap 10-332 with the flushing water branch 3, 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, since the second chamber 10-2 is not required to be supplied with the flushing water through the connection branch 9 in the first flushing mode, the second water gap 10-332 and the second port of the connection branch 9 are kept in communication through the second switching unit 20-2 at the same time, the first flushing mode and the first water making mode can be operated simultaneously, and similarly, the second flushing mode and the second water making mode can be operated simultaneously or not simultaneously, and when the first chamber 10-1 or the second chamber 10-2 needs to be flushed, the water treatment system can simultaneously make water, so that the water consumption of a user is not affected, and the requirements of the user can be better satisfied.

More preferably, referring to fig. 2 and 6, the water treatment system further includes a second purified water branch 7, a water storage branch 5 and a user water intake branch 4, and the connection branch 9 is provided with a pressure stabilizing device, for example, a pressure stabilizing pump 91, so as to ensure the stability of the water pressure of the water treatment system, further ensure that a sufficient amount of user water is generated, and promote the user experience. In addition, a second filter 92 is further provided on the connection branch 9, and the second filter 92 includes, for example, an activated carbon filter element, and further purifies the purified water obtained after the treatment by the first filter 10, so that the user obtains water with better quality. The water treatment system is further provided with a second waste discharge branch 2, the second waste discharge branch 2 is communicated with the concentrated water port 10-337 and is used for discharging concentrated water generated in the first filtering device 10, a waste water ratio electromagnetic valve 21 is arranged on the second waste discharge branch 2, and the waste water ratio electromagnetic valve 21 is preferably an adjustable waste water ratio electromagnetic valve so as to better control the waste water ratio at the second waste discharge branch 2 and further ensure the waste water ratio of the water treatment system. The first purified water branch 6 is provided with a check valve 61 for preventing backflow of water flow on the first purified water branch 6, the outlet end of the first purified water branch 6 is communicated with the second purified water branch 7 and the water storage branch 5, the water storage branch 5 is provided with a water storage device 51, the second purified water branch 7 is provided with a third filtering device 71 for further treating water, the outlet of the second purified water branch 7 is communicated with the user water branch 4, and the user water branch 4 is provided with a water taking tap, such as a gooseneck tap 41, so that water taking of a user is facilitated. In addition, the inlets 10-335 of the flushing water branch 3 in the water treatment system are communicated with the water storage branch 5, the flushing water branch 3 can use water in the water storage device 51 as flushing water, or the water in the second purified water branch 7 directly enters the flushing water branch 3 to serve as flushing water after entering the water storage branch 5, so that when the water storage device 51 is arranged, the first water making mode or the second water making mode can be operated simultaneously or not simultaneously when the first flushing mode or the second flushing mode is arranged.

In an alternative embodiment, referring to fig. 2 and 6, the flushing water branch 3 is communicated with the second waste discharge branch 2, and the waste water generated by the first filtering device 10 is used to replace the clean water of the water storage device 51, so that flushing water is provided for the first flushing mode and the second flushing mode, the waste water is reasonably utilized, the waste of the clean water is avoided, and the flushing of the first chamber 10-1 and the second chamber 10-2 is realized, so that water is saved.

At this time, in the first flushing mode, the first switching unit 20-1 is controlled to communicate the first waste discharge branch 1 with the third water port 10-333, the second switching unit 20-2 is controlled to communicate the fourth water port 10-334 with the flushing water branch 3, raw water is filtered by the first filtering device 10 to obtain purified water and concentrated water, the purified water is purified by the third filtering device 71 on the first purified water branch 6 and the second purified water branch 7 and then used by a user, the concentrated water enters the flushing water branch 3 through the second waste discharge branch 2 and is used as flushing water for flushing the second chamber 10-2, the flushing water enters the second chamber 10-2 through the fourth water port 10-334, and is discharged from the second chamber 10-2 through the third water port 10-333 and then discharged through the first waste discharge branch 1, and flushing of the second chamber 10-2 is completed. 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. It should be noted that this alternative embodiment differs from the preferred embodiment described above in that when the first flush mode is operated, the first water making mode needs to be operated simultaneously, with the source of flush water being provided by the first water making mode.

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 (18)

1. The filter element structure is characterized by comprising a shell, wherein the shell comprises a filter flask with one end being closed and the other end being open, and an end structure arranged at the open end of the filter flask, a separation structure is arranged in the shell and divides the interior of the shell into a first cavity, a second cavity and a third cavity, a filter structure is arranged in each cavity, the third cavity is positioned in the middle of the filter flask in the radial direction of the filter flask, and the first cavity and the second cavity are positioned at the radial outer side of the third cavity; the separation structure comprises a first cylindrical structure with two open ends, one end of the first cylindrical structure is connected with the end structure, the other end of the first cylindrical structure is connected with the closed end of the filter flask, the end structure, the inner side surface of the first cylindrical structure and the closed end of the filter flask are enclosed to form a third chamber, and the end structure, the outer side surface of the first cylindrical structure and the closed end of the filter flask are enclosed to form a first chamber and a second chamber; the separation structure further comprises a separation plate, wherein the separation plate extends along the axial direction of the filter flask and is connected with the side wall of the filter flask and the outer side wall of the first cylindrical structure, so that a space formed by enclosing the end part structure, the outer side surface of the first cylindrical structure and the closed end of the filter flask is divided into a first chamber and a second chamber which are mutually independent.

2. The filter cartridge structure of claim 1, further comprising a membrane shell sleeved between the first cylindrical structure and the filter flask, the filter structure being disposed in the membrane shell, the membrane shell comprising a second cylindrical structure having two open ends, one open end of the second cylindrical structure being connected to the end structure, and the other open end being spaced from the closed end of the filter flask.

3. The filter element structure according to claim 2, wherein the second cylindrical structure is provided with a water passing through hole; and/or the number of the groups of groups,

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

4. A filter element arrangement according to claim 3, wherein the projection and/or recess arrangement extends in a helical direction.

5. The filter element structure according to claim 1, wherein an internal pressure type filter structure is formed in the third chamber, and a water inlet and a purified water outlet which are communicated with the third chamber are formed on the housing, or,

an external pressure type filtering structure is formed in the third chamber, and a water inlet, a purified water outlet and a concentrated water outlet which are communicated with the third chamber are arranged on the shell.

6. The filter element structure according to claim 5, wherein the third chamber is internally provided with an internal pressure type filtering structure, the filter element structure comprises a water inlet pipe, the water inlet pipe is communicated with the water inlet, a part of the water inlet pipe is inserted into the third chamber, a plurality of water outlet holes are arranged on the water inlet pipe, the water outlet holes are distributed along the axial direction and/or the radial direction of the water inlet pipe, or,

an external pressure type filtering structure is formed in the third cavity, the filter element structure comprises an adapter and a water outlet pipe, the filtering structure in the third cavity is connected with the end structure through the adapter, and the water outlet pipe is communicated with the purified water outlet.

7. The filter cartridge structure of claim 5, wherein the end structure is provided with a first water port and a second water port in communication with the first chamber, one of the first water port and the second water port being in communication with a filter structure upstream side space in the first chamber, and the other of the first water port and the second water port being in communication with a filter structure downstream side space in the first chamber; and/or the number of the groups of groups,

a third water gap and a fourth water gap which are communicated with the second chamber are arranged on the end part structure, one of the third water gap and the fourth water gap is communicated with the space on the upstream side of the filtering structure in the second chamber, and the other one of the third water gap and the fourth water gap is communicated with the space on the downstream side of the filtering structure in the second chamber; and/or the number of the groups of groups,

An internal pressure type filtering structure is formed in the third chamber, and the water inlet and the purified water outlet are arranged on the end structure; and/or the number of the groups of groups,

and an external pressure type filtering structure is formed in the third chamber, and the water inlet, the purified water outlet and the concentrated water outlet are arranged on the end structure.

8. The cartridge arrangement of any one of claims 5 to 7, wherein the cartridge arrangement disposed within the first chamber comprises an ultrafiltration arrangement; and/or the number of the groups of groups,

the filter element structure arranged in the second cavity comprises an ultrafiltration structure; and/or the number of the groups of groups,

the filter element structure arranged in the third cavity comprises a carbon filter element or a reverse osmosis filter element.

9. A water treatment system comprising a first filter arrangement of the filter element arrangement of any one of claims 1 to 8, 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 arrangement configured to switch the first and second chambers into the water making flow path and the flushing flow path and to switch the third chamber into the water making flow path.

10. The water treatment system of claim 9, wherein the switching device is configured to switch the third chamber into a downstream side of the first chamber or second chamber located on the water-producing flow path.

11. The water treatment system of claim 10, wherein the first filter device is a filter cartridge structure of claim 8, an external pressure type filter structure is formed in the third chamber, the water treatment system includes a water inlet branch, a first waste discharge branch, a second waste discharge branch, a first purified water branch, and a connection branch, the purified water outlet communicates with the first purified water branch, the water inlet communicates with the first port of the connection branch, the concentrate water outlet communicates with the second waste discharge branch, the switching device includes a first switching unit for switching communication between the water inlet branch and the first waste discharge branch between the first water port and the third water port, and a second switching unit configured to enable communication between the second water port and the second port of the connection branch.

12. The water treatment system of claim 11, wherein the second switching unit is further configured to enable communication of the second water port with a fourth water port; or alternatively, the process may be performed,

the second switching unit is further configured to be able to switch the second water gap and the fourth water gap in communication between the second port of the connecting branch and the second waste discharge branch.

13. The water treatment system of claim 11, further comprising a rinse water leg, the second switching unit further configured to switch the second water port and the fourth water port in communication between the second port of the connection leg and the rinse water leg.

14. The water treatment system of claim 13 further comprising a water storage device, the flush water branch being in communication with the water storage device.

15. The water treatment system of claim 11, wherein a pressure stabilizing device is provided on the connecting branch; and/or the number of the groups of groups,

and a second filtering device is arranged on the connecting branch.

16. A control method of a water treatment system according to claim 12, wherein the second switching unit is further configured to enable communication of the second water port with the fourth water port, the water treatment system having 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 second port of the connecting 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 second port of the connecting 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.

17. A control method of a water treatment system according to claim 12, wherein the second switching unit is further configured to switch the second water port and the fourth water port to be communicated between the second port of the connection branch and the second waste branch, the water treatment system having 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 second port of the connecting branch;

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 second waste discharge branch;

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 second port of the connecting 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 second waste discharge branch.

18. The method for controlling a water treatment system according to claim 13 or 14, wherein 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 second port of the connecting branch;

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;

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 second port of the connecting 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.