WO2016095400A1

WO2016095400A1 - Composite filter cartridge and water purification system having same

Info

Publication number: WO2016095400A1
Application number: PCT/CN2015/078072
Authority: WO
Inventors: 蔡雪刚; 张兴致
Original assignee: 佛山市顺德区美的饮水机制造有限公司; 美的集团股份有限公司
Priority date: 2014-12-19
Filing date: 2015-04-30
Publication date: 2016-06-23

Abstract

Provided is a composite filter cartridge (10) and a water purification system having same, said composite filter cartridge (10) comprising: a bottle body (100), the bottle (100) being provided with a raw water inlet (110), a purified water outlet (140), and a concentrated water outlet (150); a pretreatment filter cartridge (200), said pretreatment filter cartridge (200) being disposed in the bottle body (100); a filter membrane assembly (300), said filter membrane assembly (300) being nested in the pretreatment filter cartridge (200); the filter membrane (300) comprises a webbed water collection pipe (310) and a filter membrane (320); the upper end of the webbed water collection pipe (310) is provided with a purified water outlet hole (470) and an upper pretreatment water inlet hole (480) leading to the upper end of the filter membrane (320), and the lower end of the webbed water collection pipe (310) is provided with a lower pretreatment water inlet hole (490) leading to the lower end of the filter membrane (320); the side wall of the webbed water collection pipe (310) is provided with a purified water inlet hole (460), and inside the webbed water collection pipe (310) is a purified water outlet channel (450).

Description

Composite filter element and water purification system with it

Technical field

The present invention relates to the field of electrical appliance manufacturing technology, and in particular to a composite filter cartridge and a water purification system having the composite filter cartridge.

Background technique

In the water purifying system of the related art, PP (polypropylene) cotton is used as the pre-filter element, and then the RO (reverse osmosis) filter element is connected in series, and the multi-stage filter element is used for water purification treatment. The pipeline connection of the entire water purification system is complicated, the installation and replacement are inconvenient, and the multi-joint connection is connected, and the risk of water leakage is large. In addition, the service life of multi-stage filter elements is inconsistent. The filter elements that users need to replace have 3 to 5 levels. The filter elements are frequently purchased and need to be replaced by professionals, which affects the user experience and high cost of use.

Summary of the invention

The present invention aims to solve at least one of the above technical problems in the related art to some extent. To this end, the present invention provides a composite filter element, which integrates a plurality of water purification filter materials, which can simplify the pipeline connection and installation and replacement of the water purification system, has less risk of water leakage, improves the user experience, and reduces the use cost. And has the advantages of large flux, that is, filter and drink.

The invention also proposes a water purification system having the composite filter element.

In order to achieve the above object, according to an embodiment of the first aspect of the present invention, a composite filter element is provided, the composite filter element comprising: a bottle body having a raw water inlet, a pure water outlet and a concentrated water outlet a pretreatment filter cartridge, the pretreatment filter cartridge being disposed in the bottle; a filter assembly, the filter membrane assembly being nested within the pretreatment filter cartridge, the filter membrane assembly including a peritoneal water collection tube and a coiled body a filter membrane on the abdominal collecting tube, the upper end of the abdominal water collecting tube is provided with a pure water outlet hole and an upper pretreatment inlet hole leading to the upper end of the filter membrane, and the lower end is provided with a lower end leading to the lower end of the filter membrane Pre-treating the water inlet hole, the side wall of the abdominal water collection tube is provided with a pure water inlet hole communicating with the filter membrane, and the peritoneal water collection tube has the pure water inlet hole and the pure water a pure water outlet passage of the outlet hole; the pretreatment filter element and the membrane module are sequentially disposed between the raw water inlet and the pure water outlet and the concentrated water outlet.

The composite filter element according to the embodiment of the invention integrates a plurality of water purification filter materials, which can simplify the pipeline connection, installation and replacement of the water purification system, has less risk of water leakage, improves the user experience, reduces the use cost, and has a large flux. It is the advantage of filtering and drinking.

In addition, the composite filter element according to the above embodiment of the present invention may also have the following additional technical features:

According to an embodiment of the present invention, the bottle body is further provided with a pre-treatment water outlet and a pressurized pre-treatment water inlet, the pre-treatment filter element being located between the raw water inlet and the pre-treatment water outlet, The membrane module is located at the pressurization The pretreatment water inlet is connected with the pure water outlet and the concentrated water outlet, and the upper pretreatment inlet and the lower pretreatment inlet are in communication with the pressurized pretreatment inlet.

According to an embodiment of the invention, the peritoneal water collection tube has a pre-treatment water inlet passage connecting the upper pre-treatment inlet hole and the lower pre-treatment inlet hole.

According to an embodiment of the present invention, the abdominal water collection tube includes: a water collection tube body, the pretreatment water inlet passage and the pure water outlet water passage are disposed in the water collection tube body, and the pure water inlet hole is disposed at The pure water outlet hole is disposed at an upper end of the water collection tube body on the side wall of the water collection tube body; the upper end cover is sleeved at an upper end of the water collection tube body and the water collection tube body Defining the upper pretreatment water inlet hole; a lower end cover sleeved at a lower end of the water collection tube body and defining the lower pretreatment water inlet hole between the water collection tube body and The filter membrane is wound around the water collection tube body and the upper and lower ends are sandwiched between the upper end cover and the lower end cover.

According to an embodiment of the invention, the pure water outlet passage is disposed around the pretreatment inlet passage.

According to an embodiment of the invention, the pre-treatment water inlet channel comprises: a vertical section, a lower end of the vertical section is in communication with the lower pre-treatment inlet hole; a horizontal section, a middle section of the horizontal section The upper ends of the vertical segments are connected and the two ends are respectively in communication with the upper pretreatment inlet holes.

According to an embodiment of the invention, the pure water inlet holes are plural and are disposed circumferentially and axially along the side walls of the water collection tube body.

According to an embodiment of the invention, the pretreatment filter element comprises a PP nonwoven fabric wound outer layer and an activated carbon inner layer.

According to an embodiment of the invention, the pretreatment filter element comprises an outer layer of PP, an intermediate layer of activated carbon and an inner layer of ultrafiltration or an inner layer of PP.

According to an embodiment of the present invention, the activated carbon inner layer or the activated carbon middle layer is an activated carbon carbon rod or is wound from an activated carbon fiber.

According to an embodiment of the invention, the filter membrane is a reverse osmosis membrane, an ultrafiltration membrane or a nanofiltration membrane.

An embodiment according to a second aspect of the invention provides a water purification system comprising a composite filter element according to an embodiment of the first aspect of the invention.

The water purification system according to the embodiment of the invention has the advantages of simple pipeline connection, convenient installation and replacement, high user experience, low use cost, large throughput, and filtration and drinking.

DRAWINGS

1 is a schematic view showing the structure of a composite filter element according to an embodiment of the present invention.

2 is a schematic view of a raw water passage and a pretreatment water passage of a composite filter element according to an embodiment of the present invention.

3 is a schematic view of a pure water circuit of a composite filter element in accordance with an embodiment of the present invention.

4 is a schematic view of a concentrated water passage of a composite filter element in accordance with an embodiment of the present invention.

5 is a schematic view showing the structure and water path of a membrane module of a composite filter element according to an embodiment of the present invention.

Reference numerals: composite filter element 10, bottle body 100, raw water inlet 110, pretreatment water outlet 120, pressurized pretreatment water inlet 130, pure water outlet 140, concentrated water outlet 150, pretreatment filter 200, filter The assembly 300, the abdominal water collection tube 310, the filter membrane 320, the water collection tube body 410, the upper end cover 420, the lower end cover 430, the pretreatment water inlet passage 440, the pure water outlet passage 450, the pure water inlet hole 460, and the pure water outlet hole 470 The upper pretreatment water inlet 480, the lower pretreatment water inlet hole 490, the vertical section 441, and the horizontal section 442.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

A composite filter element 10 according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

As shown in FIGS. 1-5, a composite filter cartridge 10 in accordance with an embodiment of the present invention includes a bottle 100, a pretreatment cartridge 200, and a filter assembly 300.

The bottle body 100 is provided with a raw water inlet 110, a pretreatment outlet 120, a pressurized pretreatment inlet 130, a pure water outlet 140, and a concentrated water outlet 150. The pretreatment filter cartridge 200 is disposed within the bottle body 100. The filter assembly 300 is nested within the pretreatment cartridge 200.

The membrane module 300 includes a peritoneal water collection tube 310 and a filter membrane 320 wound around the abdominal water collection tube 310. The upper end of the abdominal water collection tube 310 is provided with a pure water outlet hole 470 and an upper pretreatment water inlet hole leading to the upper end of the filter membrane 320. 480 (up and down direction is shown by the arrow A in the drawing), the lower end of the abdominal water collection tube 310 is provided with a lower pretreatment inlet hole 490 leading to the lower end of the filter membrane 320, and the side wall of the peritoneal water collection tube 310 is provided with filtering The pure water inlet hole 460 through which the membrane 320 communicates has a pure water outlet passage 450 connecting the pure water inlet hole 460 and the pure water outlet hole 470 in the peritoneal water collection tube 310.

The pretreatment filter element 200 and the membrane module 300 are sequentially disposed between the raw water inlet 110 and the pure water outlet 140 and the concentrated water outlet 150. Specifically, the pretreatment filter element 200 is located between the raw water inlet port 110 and the pretreatment water outlet 120, and the filter module 300 is located between the supercharged pretreatment water inlet 130 and the pure water outlet 140 and the concentrated water outlet 150. The treatment inlet 480 and the lower pretreatment inlet 490 are in communication with the pressurized pretreatment inlet 130.

The water purification process of the composite filter element 10 according to an embodiment of the present invention will be described below with reference to the accompanying drawings. Among them, the straight line is raw water and pretreated water, the dotted line is pure water, and the dotted line is concentrated water.

As shown in FIG. 2, after the raw water enters the composite filter element 10 from the raw water inlet 110, it is first pre-filtered through the pre-treatment filter element 200, and the pre-treated water filtered by the pre-treatment is discharged from the pre-treatment water outlet 120, and after being pressurized, The composite filter element 10 is reintroduced from the pressurized pretreatment water inlet 130. As shown in FIG. 5, the pressurized pretreated water flows from the upper pretreatment inlet 480 and the lower pretreatment inlet 490 to the membrane 320. As shown in FIG. 3, the pure water filtered through the membrane 320 is in turn The pure water inlet hole 460, the pure water outlet passage 450, and the pure water outlet hole 470 are discharged from the pure water outlet 140. As shown in FIG. 4, the concentrated water filtered through the filtration membrane 320 flows from both sides of the filtration membrane 320 to the concentrated water outlet 150, and flows out from the concentrated water outlet 150.

The composite filter element 10 according to the embodiment of the present invention can replace the multi-stage filter element in the existing water purification system by integrating the pretreatment filter element 200 and the filter membrane assembly 300, which not only simplifies the pipe connection, but also facilitates installation and replacement. And can reduce the number of joints, thereby reducing the risk of water leakage. Moreover, after the composite filter element 10 integrates the pretreatment filter element 200 and the filter membrane assembly 300, the service life of the pretreatment filter element 200 and the membrane module 300 can be consistent, eliminating the inconvenience of frequently replacing different filter elements, and greatly reducing the use cost. In addition, the peritoneal water collection tube 310 in the membrane module 300 is provided with an upper pretreatment inlet 480 and a lower pretreatment inlet 490. The pressurized pretreated water can be simultaneously from the upper and lower ends of the peritoneal collection tube 310. The flow is filtered to the filter membrane 320, whereby the amount of water flowing can be increased to increase the amount of water produced, and the demand for filtering or drinking is satisfied. Therefore, the composite filter element 10 according to the embodiment of the present invention integrates a plurality of water purification filter materials, which can simplify the pipeline connection and installation and replacement of the water purification system, has fewer water leakage risks, improves the user experience, reduces the use cost, and has Great flux, that is, the right to filter and drink.

Optionally, the pre-treatment water outlet 120 and the pressurized pre-treatment water inlet 130 may not be disposed on the bottle body 100 of the composite filter element 10 according to the embodiment of the present invention, and the pre-treated water filtered by the pre-treatment filter element 200 may pass directly. The upper pretreatment inlet 480 and the lower pretreatment inlet 490 enter the membrane 320.

A composite filter element 10 in accordance with an embodiment of the present invention will now be described with reference to the accompanying figures.

In some embodiments of the invention, as shown in FIGS. 1-5, a composite filter cartridge 10 in accordance with an embodiment of the present invention includes a bottle 100, a pretreatment cartridge 200, and a filter assembly 300.

Further, as shown in FIG. 5, the peritoneal water collection tube 310 has a pre-treatment water inlet passage 440 communicating with the upper pre-treatment inlet 480 and the lower pre-treatment inlet 490, and the super-pressure at the pre-treatment inlet 490 The post-pretreatment water can be pre-treated into the water inlet hole 480 through the pre-treatment inlet water passage 440, so that the pressurized pre-treatment water enters the filter membrane 320 from the upper pre-treatment inlet water hole 480 and the lower pre-treatment inlet water hole 490 simultaneously. Filter.

In some specific examples of the present invention, as shown in FIG. 5, the abdominal water collection tube 310 includes a water collection tube body 410, an upper end cover 420, and a lower end cover 430.

The pre-treatment water inlet passage 440 and the pure water outlet passage 450 are disposed in the water collection tube body 410, the pure water inlet water hole 460 is disposed on the side wall of the water collection tube body 410, and the pure water outlet water hole 470 is disposed at the upper end of the water collection tube body 410. . The upper end cover 420 is sleeved on the upper end of the water collection tube body 410, and the upper pretreatment water inlet hole 480 is defined between the upper end cover 420 and the water collection tube body 410. The lower end cover 430 is sleeved at the lower end of the water collection tube body 410, and the lower pretreatment water inlet hole 490 is defined between the lower end cover 430 and the water collection tube body 410. The filter film 320 is wound around the water collection tube body 410, and the upper and lower ends of the filter film 320 are sandwiched between the upper end cover 420 and the lower end cover 430. Therefore, the pretreatment inlet channel 440, the pure water outlet channel 450, the pure water inlet hole 460, the pure water outlet hole 470, the upper pretreatment inlet hole 480, and the lower pretreatment inlet water can be appropriately formed on the abdominal water collection tube 310. Hole 490, Moreover, the installation and positioning of the filter membrane 320 can be realized, and the position of the filter membrane 320 is facilitated to filter the pressurized pretreatment water.

Wherein, as shown in FIG. 5, the pure water outlet channel 450 is disposed around the pre-treatment water inlet channel 440. In other words, the water collecting body 410 can be a sleeve structure, and the pressurized pretreated water can enter the filter membrane 320 from the upper end and the lower end of the filter membrane 320 through the inner tube of the water collecting tube body 410, and filtered through the filtering membrane 320. The concentrated water flows out from the side of the filter membrane 320, and the pure water filtered through the membrane 320 flows out through the outer tube of the header body 410.

Specifically, as shown in FIG. 5, the pre-treatment water inlet passage 440 includes a vertical section 441 and a horizontal section 442. The lower end of the vertical section 441 is open and communicates with the lower pretreatment inlet 490. The middle portion of the horizontal section 442 communicates with the upper end of the vertical section 441, and both ends of the horizontal section 442 communicate with the upper pretreatment inlet 480, respectively. A portion of the pressurized pretreated water enters the lower end of the filter membrane 320 from the lower pretreatment inlet 490, and another portion of the pressurized pretreated water enters the pretreatment inlet passage 440 from the lower end of the vertical section 441, and then passes through the horizontal section. The 442 flow pre-processes the inlet port 480 and enters the upper end of the filter 320 from the upper pre-treatment inlet port 480.

Advantageously, as shown in FIG. 5, a plurality of pure water outlets 140 are provided, and a plurality of pure water inlet holes 460 are disposed along the circumferential and axial intervals of the side walls of the outer tube of the water collection tube body 410, which can be ensured on the one hand. The pure water filtered by the filtration membrane 320 uniformly enters the pure water outlet passage 450, and on the other hand, the amount of water entering the pure water outlet passage 450 can be increased, thereby further increasing the amount of water produced.

In some embodiments of the invention, the pretreatment cartridge 200 comprises a PP nonwoven wound outer layer and an activated carbon (CB) inner layer.

Alternatively, the pretreatment cartridge 200 may also include an outer layer of PP, an intermediate layer of activated carbon, and an inner layer of ultrafiltration (UF) or an inner layer of PP.

Wherein, the activated carbon inner layer or the activated carbon middle layer may be activated carbon carbon rod or wound by activated carbon fiber.

For example, the pretreatment filter cartridge 200 may include a 5 micron PP cotton outer layer, an activated carbon carbon rod middle layer, and a 1 micron PP cotton inner layer. The pretreatment filter element 200 may also include a wound PP outer layer, an activated carbon carbon rod intermediate layer, and an ultrafiltration inner layer. The layer, the pretreatment filter element 200 can also be composed of an outer layer of PP cotton, a middle layer of activated carbon carbon rods and an inner layer of ultrafiltration.

The filter membrane 320 can be a reverse osmosis membrane, an ultrafiltration membrane or a nanofiltration membrane.

A water purification system according to an embodiment of the present invention is described below. The water purification system according to an embodiment of the present invention includes the composite filter element 10 according to the above embodiment of the present invention.

It will be understood by those skilled in the art that the composite filter element 10 according to an embodiment of the present invention can also be used alone as a complete product, not just one component in a water purification system.

Other configurations and operations of the water purification system in accordance with embodiments of the present invention are common to one of ordinary skill in the art Known, it will not be described in detail here.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation or position of indications such as "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplification of the description, and does not indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation, and thus It is not to be understood as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Further, various embodiments or examples described in this specification can be joined and combined by those skilled in the art.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A composite filter element, comprising:

a bottle body, wherein the bottle body is provided with a raw water inlet, a pure water outlet and a concentrated water outlet;

Pre-processing the filter element, the pre-treatment filter element is disposed in the bottle body;

a membrane module, the membrane module is nested in the pretreatment filter element, the membrane module comprises a peritoneal water collection tube and a filter membrane wound around the abdominal cavity water collection tube, and the upper end of the abdominal cavity water collection tube is provided There is a pure water outlet hole and an upper pretreatment inlet hole leading to the upper end of the filter membrane, and a lower pretreatment inlet hole leading to the lower end of the filter membrane is provided at the lower end, and the side wall of the peritoneal water collection tube is provided a pure water inlet hole communicating with the filtration membrane, wherein the peritoneal water collection tube has a pure water outlet passage connecting the pure water inlet hole and the pure water outlet hole;

The pretreatment filter element and the filter membrane assembly are sequentially disposed between the raw water inlet and the pure water outlet and the concentrated water outlet.
The composite filter element according to claim 1, wherein the bottle body is further provided with a pretreatment water outlet and a pressurized pretreatment water inlet, the pretreatment filter element being located at the raw water inlet and the pretreatment Between the nozzles, the filter module is located between the pressurized pretreatment water inlet and the pure water outlet and the concentrated water outlet, the upper pretreatment inlet and the lower pretreatment The water hole is in communication with the pressurized pretreatment water inlet.
The composite filter element according to claim 1 or 2, wherein the peritoneal water collection tube has a pretreatment inlet passage communicating with the upper pretreatment inlet hole and the lower pretreatment inlet port.
The composite filter cartridge according to claim 3, wherein said peritoneal water collection tube comprises:

a water collecting body, the pretreatment water inlet passage and the pure water outlet passage are disposed in the water collecting body, and the pure water inlet hole is disposed on a side wall of the water collecting body, the pure water effluent a hole is disposed at an upper end of the water collecting body;

An upper end cover, the upper end cover is sleeved at an upper end of the water collection tube body and defines the upper pretreatment water inlet hole with the water collection tube body;

a lower end cover, the lower end cover is sleeved at a lower end of the water collection tube body and defines the lower pretreatment water inlet hole between the water collection tube body, and the filter film is wound around the water collection tube body And upper and lower ends are clamped between the upper end cover and the lower end cover.
The composite filter element of claim 4 wherein said pure water outlet passage is disposed about said pretreated inlet passage.
The composite filter cartridge of claim 4 wherein said pre-treatment inlet channel comprises:

a vertical section, the lower end of the vertical section is in communication with the lower pretreatment inlet hole;

a horizontal section, a middle portion of the horizontal section is in communication with an upper end of the vertical section, and two ends are respectively in communication with the upper pretreatment inlet hole.
The composite filter element according to claim 4, wherein the pure water inlet holes are plural and are disposed circumferentially and axially along the side walls of the water collection tube body.
The composite filter element of claim 1 wherein said pretreatment filter element comprises a PP nonwoven wound outer layer and an activated carbon inner layer.
The composite filter element of claim 1 wherein said pretreatment filter element comprises a PP outer layer, an activated carbon intermediate layer and an ultrafiltration inner layer or a PP inner layer.
The composite filter element according to claim 8 or 9, wherein the activated carbon inner layer or the activated carbon middle layer is an activated carbon carbon rod or is wound from an activated carbon fiber.
The composite filter element according to claim 1, wherein the filter membrane is a reverse osmosis membrane, an ultrafiltration membrane or a nanofiltration membrane.
A water purification system characterized by comprising the composite filter element according to any one of claims 1-11.