CN218795108U - Filter element assembly and water purifier with same - Google Patents

Abstract

The utility model discloses a filter element group spare and purifier that has it, filter element group spare includes: a housing; the pipe body is arranged in the shell, a rear filter cavity is defined between the outer peripheral surface of the pipe body and the inner peripheral surface of the shell, and a front filter cavity is defined in the pipe body; the first filter element is arranged in the preposed filter cavity and is used for filtering raw water to obtain preposed water; the second filter core, the second filter core is located rearmounted filter chamber and is used for filtering leading water, and the second filter core includes the RO membrane and the carbonaceous material layer of concentric coiling. According to the utility model discloses filter element group spare encircles first filter core setting through the second filter core, and the second filter core includes the RO membrane of concentric coiling and contains the charcoal material layer, makes the effective filtration size of RO membrane bigger, can show and improve filtration efficiency and filter effect, and need not to set up alone rear filter core structure, and the integrated level of second filter core is high, the manufacturing process and the assembly process degree of difficulty are low, are favorable to reduction in production cost.

Description

Filter element assembly and water purifier with same

Technical Field

The utility model relates to a filter core technical field, more specifically relates to a filter core subassembly and purifier that has it.

Background

In the related art, the RO filter element is limited by space, so that the filtering area of the RO membrane is small, the filtering efficiency is low, and multiple requirements of compact structure, small occupied space and high-efficiency filtering cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a filter element group spare, filter element group spare has increased the effective filtration size of RO membrane, has improved filtration efficiency and filter effect, and the integrated level is high, easily makes and assembles.

Another objective of the present invention is to provide a water purifier with the above filter element assembly.

According to the utility model discloses filter element group spare, include: a housing; the pipe body is arranged in the shell, a rear filter cavity is defined between the outer peripheral surface of the pipe body and the inner peripheral surface of the shell, and a front filter cavity is defined in the pipe body; the first filter element is arranged in the preposed filter cavity and is used for filtering raw water to obtain preposed water; the second filter core, the second filter core is located postposition filter chamber is intracavity and is used for filtering leading water, the second filter core includes the RO membrane of concentric coiling and contains the charcoal material layer.

According to the utility model discloses filter element group spare encircles first filter core setting through the second filter core, and the second filter core includes the RO membrane of concentric coiling and contains the charcoal material layer, makes the effective filtration size of RO membrane bigger, can show and improve filtration efficiency and filter effect, and need not to set up rear filter core structure alone, and the integrated level of second filter core is high, manufacturing process and assembly process degree of difficulty are low, are favorable to reduction in production cost.

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

according to some embodiments of the present invention, the first filter element comprises: a first center tube having a central passage therein for discharging pre-water; and the filter material layer is arranged between the outer peripheral surface of the first central pipe and the inner peripheral surface of the pipe body and is used for filtering raw water.

According to the utility model discloses a some embodiments, the filtering material layer with form raw water inlet channel between the body, the filtering material layer with form leading water outlet channel between the first center tube, the axial one end of center channel with leading water outlet channel intercommunication.

According to the utility model discloses a some embodiments, the end wall internal surface of casing is equipped with first barrel and the second barrel of concentric setting, first barrel with center tube seal cooperation, and have with the leading water apopore of center channel intercommunication, the second barrel with body seal cooperation, just the second barrel with form between the first barrel with the raw water intake antrum of raw water inhalant canal intercommunication.

According to some embodiments of the invention, the RO membrane and the layer of carbonaceous material have an axial length equal.

According to some embodiments of the invention, the second filter element comprises: and a pure water outlet channel is defined between the inner peripheral surface of the second central tube and the outer peripheral surface of the tube body, the RO membrane and the carbon-containing material layer are wound outside the second central tube, and a preposed water inlet channel is formed between the outer peripheral surface of the second filter element and the inner peripheral surface of the shell.

According to some embodiments of the invention, the RO membrane is located radially outside the layer of carbonaceous material.

According to some embodiments of the utility model, at least one deck contain charcoal material layer and at least one deck the RO membrane is coiled after range upon range of in the second center tube.

According to some embodiments of the utility model, the end wall internal surface of casing is equipped with second barrel, third barrel and the fourth barrel of concentric setting, the second filter core includes the end cover, the end cover has first perisporium and the second perisporium of concentric setting, the second barrel with the sealed cooperation of body, the third barrel with the sealed cooperation of first perisporium, the fourth barrel with the sealed cooperation of second perisporium, the second barrel with form between the third barrel with the pure water play water cavity of pure water exhalant canal intercommunication, the third barrel with form between the fourth barrel with the RO membrane with the concentrated water play water cavity of the axial tip intercommunication on carbon-containing material layer, the fourth barrel with form between the perisporium of casing with the leading water intake antrum of leading water intake canal intercommunication.

According to the utility model discloses a some embodiments, the end wall of casing be equipped with the raw water inlet of leading filter chamber intercommunication, with the pure water delivery port and the concentrated water delivery port of rearmounted filter chamber intercommunication, the import of rearmounted filter chamber with the export intercommunication of leading filter chamber, the raw water inlet is used for letting in the raw water leading filter chamber, the pure water delivery port is used for discharging the pure water that the second filter core filters the obtaining, the concentrated water delivery port is used for discharging the concentrated water that the second filter core filters the production.

According to some embodiments of the present invention, the end wall of the housing is provided with a raw water inlet and a pre-water outlet which are communicated with the pre-filter chamber, and the end wall is further provided with a pre-water inlet, a pure water outlet and a concentrated water outlet which are communicated with the post-filter chamber, wherein the raw water inlet is used for introducing raw water into the pre-filter chamber, the front water outlet is used for discharging the front water obtained by filtering the first filter element, the front water inlet is used for introducing the front water into the rear filter cavity, the pure water outlet is used for discharging the pure water obtained by filtering the second filter element, and the concentrated water outlet is used for discharging the concentrated water generated by filtering the second filter element.

According to some embodiments of the utility model, leading water delivery port is located the middle part of end wall, the raw water inlet leading water inlet pure water delivery port with concentrated water delivery port encircles leading water delivery port sets up.

According to some embodiments of the utility model, the raw water inlet leading water inlet pure water delivery port with at least two in the concentrated water delivery port with the interval of leading water delivery port varies.

According to the utility model discloses purifier, a serial communication port, include according to the utility model discloses filter element group spare.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural view of a filter element assembly according to an embodiment of the present invention;

FIG. 2 is an axial view of a filter element assembly according to an embodiment of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a sectional view of fig. 2 taken along the direction indicated by the line B-B.

Reference numerals are as follows:

a filter element assembly 100;

a housing 10; a post-filter chamber 11; a pre-filter chamber 12;

a tube body 20;

a front water outlet hole 201; a raw water inlet chamber 202; a pure water outlet cavity 203; a concentrated water outlet chamber 204; a front water inlet cavity 205;

a raw water inlet 210; a pre-water outlet 220; a pre-water inlet 230; a pure water outlet 240; a concentrate outlet 250;

a first cylinder 21; a second cylinder 22; a third cylinder 23; a fourth cylinder 24;

a first filter element 30; a raw water inlet passage 301; a pre-water outlet passage 302; a first central tube 31; a central passage 311; a layer of filter material 32;

a second filter element 40; a pre-water inlet channel 401; a pure water outlet passage 402; an RO membrane 41; a carbon-containing material layer 42; a second center tube 43; an end cap 44; a first peripheral wall 45; a second peripheral wall 46.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "a first feature" or "a second feature" may include one or more of the features, and "a plurality" means two or more, and the first feature may be "on" or "under" the second feature, and may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature therebetween, and the first feature being "on", "above" and "above" the second feature may include the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is higher in level than the second feature.

A filter cartridge assembly 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

Referring to fig. 1-4, a filter element assembly 100 according to embodiments of the present invention may include: housing 10, tubular body 20, first filter element 30, and second filter element 40.

Specifically, as shown in fig. 3 and 4, a pipe body 20 is provided in the housing 10 to divide an inner space of the housing 10 into two chambers, i.e., a pre-filter chamber 12 and a post-filter chamber 11, wherein the post-filter chamber 11 is defined between an outer circumferential surface of the pipe body 20 and an inner circumferential surface of the housing 10, and the pre-filter chamber 12 is defined in the pipe body 20.

In addition, the first filter element 30 is disposed in the prefiltration chamber 12, and the first filter element 30 is used for filtering raw water to obtain prefiltration water. The second filter element 40 is arranged in the rear filter cavity 11, and the second filter element 40 is used for filtering the pre-water to obtain pure water and concentrated water.

The raw water refers to water in a waterway which is not filtered, such as tap water. The first filter element 30 includes, but is not limited to, a PP cotton material layer, a carbon fiber material layer, etc., and may be formed by compounding an activated carbon filter element and a folded PP cotton core, for example. The raw water can be firstly filtered out by the folding PP cotton filter element, and then fine impurities in the raw water are adsorbed by the active carbon filter element, so that the service life of the second filter element 40 for filtering the preposed water is prolonged.

The second filter element 40 includes a RO membrane 41 and a carbon-containing material layer 42 (such as carbon fiber) which are concentrically wound, that is, the second filter element 40 integrates the RO membrane 41 (i.e., reverse osmosis membrane) and a post-filter element into a concentrically wound whole, so that the pre-water can be filtered from impurities by the RO membrane 41, the water quality can be purified, the water filtered by the RO membrane 41 is divided into pure water and concentrated water (i.e., wastewater), wherein the pure water is filtered by the carbon-containing material layer 42, and organic matters in the pure water can be adsorbed, thereby improving the taste of the pure water and enhancing the water experience of users.

The utility model discloses an in the embodiment, leading filter chamber 12 and rearmounted filter chamber 11 are separated through body 20, make two filter chambers extend the size homoenergetic in the axial longer to the axial dimensions who is located the first filter core 30 of leading filter chamber 12 and is located the second filter core 40 of rearmounted filter chamber 11 is also longer, has improved leading filtration, RO and has filtered and rearmounted filterable efficiency.

In addition, the second filter element 40 including the RO membrane 41 is disposed around the first filter element 30 of the pre-filtration by disposing the post-filtration chamber 11 around the pre-filtration chamber 12, the perimeter of the second filter element 40 is longer, the size of the RO membrane 41 is significantly increased, and the filtration area and the filtration efficiency of the RO membrane 41 can be significantly increased.

The second filter element 40 is wound concentrically by the RO membrane 41 and the carbon-containing material layer 42, a post-filter structure is not required to be arranged independently, materials are saved, energy conservation, emission reduction and environmental protection are facilitated, and therefore the cost for users to replace filter elements is reduced; greatly reducing the investment of initial moulds and reducing the cost pressure of enterprise operators. And the carbon material layer 42 for post-filtration does not interfere with the axial filtration size of the RO membrane 41 and the pure water outlet area, so that the filtration efficiency of the RO membrane 41 can be further improved, and the pure water filtered by the RO membrane 41 can timely and uniformly flow through the carbon material layer 42, thereby being beneficial to improving the post-filtration effect. In addition, the structure that RO membrane 41 and carbonaceous material layer 42 coiled with one heart still makes second filter core 40 have multi-functional filter effect, reduces the overall design degree of difficulty of filter core, complete machine, and the filter core integrated level is high, simplifies the filter core assembly degree of difficulty, practices thrift the production human cost.

It should be noted that, in the embodiment of the present invention, the pre-filter chamber 12 and the post-filter chamber 11 may not be communicated with each other, that is, the pre-water obtained by filtering through the first filter element 30 may flow out of the filter element assembly 100 and then flow into the post-filter chamber 11, so as to treat the pre-water through structures such as an external booster pump; or the pre-filter cavity 12 and the post-filter cavity 11 can be communicated, that is, the pre-water obtained by filtering through the first filter element 30 can directly flow to the post-filter cavity 11 through the pre-filter cavity 12 without flowing out of the filter element assembly 100, thereby simplifying the external pipeline of the filter element assembly 100.

According to the utility model discloses filter element group spare 100 encircles first filter core 30 through second filter core 40 and sets up, and second filter core 40 includes the RO membrane 41 of concentric coiling and contains charcoal material layer 42, makes RO membrane 41's effective filtration size bigger, can show and improve filtration efficiency and filter effect, and need not to set up the rear mounted filter core structure alone, and second filter core 40's integrated level is high, manufacturing process and assembly process degree of difficulty are low, are favorable to reduction in production cost.

A first filter cartridge 30 according to some embodiments of the present invention will now be described with reference to the accompanying drawings.

As shown in fig. 3 and 4, the first filter element 30 includes a first center tube 31 and a layer of filter material 32. For example, the first center tube 31 may be a plastic tube, and the filter material layer 32 may include an activated carbon filter element and a pleated PP wool core. The first center pipe 31 is provided in the housing 10, and the first center pipe 31 has a center passage 311 therein for discharging the pre-water. The filter material layer 32 is provided between the outer circumferential surface of the first center tube 31 and the inner circumferential surface of the tube body 20, and filters raw water.

The raw water is filtered by the filtering material layer 32 to obtain pre-water, and the pre-water can flow out of the filter element assembly 100 through the central passage 311, so as to flow into the post-filter cavity 11 after being pressurized by a booster pump and the like. The first central tube 31 is matched with the tube body 20, so that the filter material layer 32 can be supported and limited on the one hand, and the flow path of raw water and front water can be limited on the other hand, and the filtering efficiency is improved.

In some embodiments, as shown in fig. 3 and 4, a raw water inlet channel 301 is formed between the filter material layer 32 and the tube body 20, a front water outlet channel 302 is formed between the filter material layer 32 and the first central tube 31, and one axial end of the central channel 311 is communicated with the front water outlet channel 302.

In the water filtration process, as shown by arrows in fig. 3, raw water first enters the raw water inlet passage 301 and flows to the end along the axial direction of the raw water inlet passage 301 (as shown in the previous stage in fig. 3); in the whole process, raw water in the raw water inlet channel 301 flows inwards along the radial direction of the filter material layer 32, and enters the preposed water outlet channel 302 after being filtered by the filter material layer 32; the front water in the front water outlet channel 302 is collected to the end in the axial direction, and then flows into the first center pipe 31 from the end of the center channel 311 to flow out through the first center pipe 31.

The arrangement of the central channel 311, the pre-water outlet channel 302 and the raw water inlet channel 301 enables the entire circumference of the filter material layer 32 to be used for filtering raw water, thereby greatly improving the raw water filtering efficiency.

According to some embodiments of the present invention, as shown in fig. 3 and 4, the inner surface of the end wall of the housing 10 is provided with a first cylinder 21 and a second cylinder 22 which are concentrically arranged, and the second cylinder 22 surrounds the first cylinder 21. The first cylinder 21 is in sealing fit with the central pipe, and a front water outlet hole 201 communicated with the central channel 311 is formed in the first cylinder 21; the second cylinder 22 is in sealing fit with the tube 20, and a raw water inlet cavity 202 communicated with the raw water inlet channel 301 is formed between the second cylinder 22 and the first cylinder 21. The raw water enters the raw water inlet chamber 202 through the housing 10 and then flows into the raw water inlet channel 301, and the filtered front water flows into the front water outlet hole 201 through the central channel 311 to flow out of the housing 10. The whole path is orderly and sealed, water ways such as raw water and preposed water are prevented from leaking, and the inlet and outlet of the raw water and the preposed water are integrated on the same end wall of the shell 10, so that the water way of the filter element assembly 100 is conveniently connected.

Second cartridge 40 according to some embodiments of the present invention will now be described with reference to the accompanying drawings.

According to some embodiments of the present invention, the axial length of the RO membrane 41 and the layer 42 of carbonaceous material are equal. After being filtered by the RO membrane 41, the pure water can be more sufficiently filtered by the carbon-containing material layer 42, so that the quality of the pure water discharged by the filter element assembly 100 is improved.

In some embodiments of the present invention, as shown in fig. 3 and 4, the second filter element 40 includes a second central tube 43, the RO membrane 41 and the carbon-containing material layer 42 are wound outside the second central tube 43, and the RO membrane 41 and the carbon-containing material layer 42 are limited by the second central tube 43, so that the RO membrane 41 and the carbon-containing material layer 42 are wound concentrically, more closely, orderly and stably.

In addition, a pure water outlet passage 402 is defined between the inner circumferential surface of the second center tube 43 and the outer circumferential surface of the tube body 20, and a pre-water inlet passage 401 is formed between the outer circumferential surface of the second filter element 40 and the inner circumferential surface of the housing 10. As shown by the arrows in fig. 4, after entering the front water inlet channel 401, the front water can flow from one end to the other end (from back to front as shown in fig. 4) in the axial direction to fill the whole front water inlet channel 401; in the whole process, the pre-water flows inwards along the radial direction to be filtered by the RO membrane 41 and the carbon-containing material layer 42 and then enters the pure water outlet channel 402; while the concentrate produced by the pre-water filtration flows axially from one end to the other (from front to back as shown in fig. 4) of the RO membrane 41 and the carbonaceous material layer 42 to be discharged from the end of the filter element assembly 100. The RO membrane 41 and the carbon-containing material layer 42 have a large filtration area and high efficiency, and can obtain pure water having a good taste.

In some embodiments, after winding, the at least one circle of RO membranes 41 is located radially outside the carbon-containing material layer 42, i.e. on the side away from the first filter element 30, so that the pre-water can be filtered by the at least one circle of RO membranes 41 and then by the carbon-containing material layer 42, so as to ensure the taste of the output pure water and avoid pantothenic acid.

In some embodiments, during the production of second filter element 40, at least one layer of carbon-containing material 42 may be layered on top of at least one layer of RO membrane 41 and then wrapped around second center tube 43.

For example, the unwound RO membrane 41 may be folded in a U-shape, and the carbon-containing material layer 42 may be attached to the inside of the U-shape, thereby forming a three-layer laminated U-shaped membrane; the U-shaped membrane is then wound onto the second center tube 43. After the winding is completed, the inside and the outside of any circle of the carbon-containing material layer 42 are both RO membranes 41. The leading water passes through RO membrane 41 and filters the back, and pure water can fully filter through carbonaceous material layer 42 to rivers are filtered many times repeatedly between RO membrane 41 and carbonaceous material layer 42, guarantee the pure water taste of final output. And, the integrated structure of RO membrane 41 and carbonaceous material layer 42 is compact, the filter area is big, and the filter effect effectively promotes.

According to some embodiments of the present invention, as shown in fig. 3 and 4, the inner surface of the end wall of the casing 10 is provided with a second cylinder 22, a third cylinder 23 and a fourth cylinder 24 which are concentrically arranged, the third cylinder 23 surrounds the second cylinder 22, and the fourth cylinder 24 surrounds the third cylinder 23. Second cartridge 40 includes an end cap 44, end cap 44 having concentrically disposed first and second peripheral walls 45 and 46, with second peripheral wall 46 surrounding first peripheral wall 45. The second cylinder 22 is in sealing fit with the tube 20, the third cylinder 23 is in sealing fit with the first peripheral wall 45, and the fourth cylinder 24 is in sealing fit with the second peripheral wall 46.

Thus, a pure water outlet chamber 203 communicating with the pure water outlet passage 402 is formed between the second cylinder 22 and the third cylinder 23, a concentrated water outlet chamber 204 communicating with the RO membrane 41 and the axial end portion of the carbon-containing material layer 42 is formed between the third cylinder 23 and the fourth cylinder 24, and a pre-water inlet chamber 205 communicating with the pre-water inlet passage 401 is formed between the fourth cylinder 24 and the peripheral wall of the housing 10.

Through the sealed cooperation structure between casing 10 end wall, body 20 and second filter core 40 end cover 44, can guarantee the independent sealed of each water route of leading water, pure water, concentrated water, avoid the water route to leak.

According to the utility model discloses a some embodiments, the end wall of casing 10 can be equipped with the mouth of a river that is used for filter element group spare 100 interior passageway business turn over water, realizes integrating of a plurality of mouths of a river setting position to filter element group spare 100 installation in. The following describes the housing 10 according to some embodiments of the present invention with reference to the accompanying drawings.

According to some embodiments of the present invention, the end wall of the housing 10 is provided with a raw water inlet 210 communicating with the front filter chamber 12, and the end wall is further provided with a pure water outlet 240 and a concentrated water outlet 250 communicating with the rear filter chamber 11. And the inlet of the post-filter chamber 11 is communicated with the outlet of the pre-filter chamber 12. The raw water inlet 210 is used for introducing raw water into the pre-filter chamber 12, so that the raw water is filtered by the first filter element 30 in the pre-filter chamber 12 to obtain pre-water. The pre-water can enter the post-filter chamber 11 so that the pre-water is filtered by the second filter element 40 to obtain pure water and simultaneously produce concentrated water. The pure water outlet 240 is used for discharging pure water filtered by the second filter element 40, and the concentrated water outlet 250 is used for discharging concentrated water filtered by the second filter element 40. Filter element group spare 100 forms three mouth of a river structures, and the leading water that obtains through first filter core 30 filtration can directly flow to rearmounted filter chamber 11 in, has simplified filter element group spare 100's external waterway structure.

In some embodiments, the distances between the raw water inlet 210, the pure water outlet 240 and the concentrated water outlet 250 and the center line of the end wall of the housing 10 may be flexibly set according to practical situations. For example, the raw water inlet 210, the pure water outlet 240 and the concentrated water outlet 250 may be disposed around a center line of the end wall of the housing 10, and at least two of the raw water inlet 210, the pure water outlet 240 and the concentrated water outlet 250 have unequal distances from the center line, so as to meet the requirement of arrangement of each channel inside the housing 10.

According to other embodiments of the present invention, as shown in fig. 1 to 4, the end wall of the casing 10 is provided with a raw water inlet 210 and a front water outlet 220 communicated with the front filter chamber 12, and the end wall is further provided with a front water inlet 230, a pure water outlet 240 and a concentrated water outlet 250 communicated with the rear filter chamber 11. The raw water inlet 210 is used for introducing raw water into the pre-filter chamber 12, so that the raw water is filtered by the first filter element 30 in the pre-filter chamber 12 to obtain pre-water. The front water outlet 220 is used for discharging the front water filtered by the first filter element 30 out of the filter element assembly 100. The pre-water inlet 230 is used for introducing external pre-water into the post-filter chamber 11, so that the pre-water is filtered by the second filter element 40 to obtain pure water and generate concentrated water. The pure water outlet 240 is used for discharging pure water filtered by the second filter element 40, and the concentrated water outlet 250 is used for discharging concentrated water filtered by the second filter element 40. Filter element group spare 100 forms five water gap structures, and the leading water that obtains through first filter core 30 filtration can flow filter element group spare 100, and in the rearmounted filter chamber 11 of reentrant after the booster pump pressure boost, be favorable to improving system water efficiency.

For example, in some embodiments, the raw water inlet 210 is in communication with the raw water inlet chamber 202, thereby providing communication with the raw water inlet channel 301; the front water outlet 220 is communicated with the front water outlet hole 201, so that the communication with the central channel 311 is realized; the front water inlet 230 is communicated with the front water inlet cavity 205, so that the front water inlet is communicated with the front water inlet channel 401; the pure water outlet 240 is communicated with the pure water outlet cavity 203, so that the pure water outlet is communicated with the pure water outlet channel 402; the concentrate outlet 250 is in communication with the concentrate outlet chamber 204, such that the concentrate exiting the end of the second filter element 40 can exit through the concentrate outlet chamber 204 and the concentrate outlet 250.

Five water gaps, namely a raw water inlet 210, a preposed water outlet 220, a preposed water inlet 230, a pure water outlet 240 and a concentrated water outlet 250, are integrated on the same end wall of the shell 10, so that when the filter element assembly 100 is used on equipment such as a water purifier, the filter element assembly 100 is more integrated and simplified in connection with a machine body water path of the equipment, and the installation of the filter element assembly 100 is convenient.

For example, in some embodiments, the filter element assembly 100 is a substantially cylindrical structure, an axial end surface of the cylindrical structure is provided with five water inlets, namely a raw water inlet 210, a pre-water outlet 220, a pre-water inlet 230, a pure water outlet 240 and a concentrated water outlet 250, the body is provided with a cylindrical insertion hole, one axial end of the insertion hole is opened to form a mounting/dismounting hole, and an end surface of the other axial end of the insertion hole is provided with five connectors. Filter element group spare 100 can insert the jack by the dismouting mouth, pegs graft and can realize on the filter core five mouths of a river and the terminal surface five interfaces correspond the intercommunication, and filter element group spare 100's dismouting mode and water route connection mode are simple convenient.

The utility model discloses an in the embodiment, arranging of five mouths in the last raw water inlet 210 of casing 10, leading water delivery port 220, leading water inlet 230, pure water delivery port 240 and concentrated water delivery port 250 can be according to each waterway's the position setting of arranging in filter element group spare 100 to it is more convenient to make each mouth of a river and correspond the passageway intercommunication, is favorable to simplifying the structure, and makes the water route reduce the route of buckling in order to reduce rivers flow resistance.

For example, in some embodiments, as shown in fig. 2 to 4, the front water outlet 220 may be disposed at a middle portion of the end wall, and the raw water inlet 210, the front water inlet 230, the pure water outlet 240, and the concentrated water outlet 250 are disposed around the front water outlet 220. So that the front water outlet 220 can be more coaxial with the central channel 311 for convenient communication. And four mouths of water of raw water inlet 210, leading water inlet 230, pure water delivery port 240 and concentrated water delivery port 250 surround leading water delivery port 220 and set up, more be convenient for with the corresponding intercommunication of the tip of the raw water inlet channel 301, leading water inlet channel 401, pure water outlet channel 402 and the second filter core 40 that surround central passage 311, and four mouths of water stagger each other along circumference to avoid producing between the four water routes and interfere, structural design is more reasonable.

In some embodiments, by providing the annular raw water inlet chamber 202, the pre-water inlet chamber 205, the pure water outlet chamber 203 and the concentrated water outlet chamber 204 on the end wall of the housing 10, the raw water inlet 210, the pre-water inlet 230, the pure water outlet 240 and the concentrated water outlet 250 are respectively in communication with the annular raw water inlet chamber 202, the pre-water inlet chamber 205, the pure water outlet chamber 203 and the concentrated water outlet chamber 204, so as to facilitate the corresponding communication with the ends of the annular raw water inlet passage 301, the pre-water inlet passage 401, the pure water outlet passage 402 and the second filter element 40, thereby avoiding the problems of water leakage or poor branch sealing.

In addition, at least two of the raw water inlet 210, the front water inlet 230, the pure water outlet 240, and the concentrated water outlet 250 have different distances from the front water outlet 220. For example, as shown in fig. 2, the distance between the raw water inlet 210 and the pure water outlet 240 and the front water outlet 220 is relatively small, and the distance between the front water inlet 230 and the concentrated water outlet 250 and the front water outlet 220 is relatively large, so that the arrangement of the raw water inlet 210, the front water inlet 230, the pure water outlet 240 and the concentrated water outlet 250 is more matched with the arrangement positions of the raw water inlet channel 301, the front water inlet channel 401, the pure water outlet channel 402 and the second filter element 40 along the radial direction of the filter element assembly 100 in the housing 10, and the water path communication is more facilitated.

The following describes a filtering process according to an embodiment of the present invention with reference to the drawings.

As shown in fig. 2-4, the raw water flows into the raw water inlet channel 301 between the tubular body 20 and the filtering material layer 32 through the raw water inlet 210 and the raw water inlet chamber 202 at the rear end, passes through the folded PP wool and the activated carbon filter element of the filtering material layer 32, converges at the front section of the front water outlet channel 302, and then enters the central channel 311 of the first central tube 31 from the front section; the front water flows forward through the central channel 311 to the front water outlet chamber and flows out of the front water outlet 220.

The effluent pre-water enters the pre-water inlet channel 401 through the pre-water inlet 230 and the pre-water inlet cavity 205 after being pressurized by the booster pump outside the filter element assembly 100, the pre-water is gathered to the front section along the pre-water inlet channel 401 and permeates to the RO membrane 41 and the carbon-containing material layer 42, after passing through the carbon-containing material layer 42, pure water flows out from the inner pure water outlet channel 402, the pure water outlet cavity 203 and the pure water outlet 240, and the generated concentrated water directly flows out backwards from the edge of the RO membrane 41, is gathered in the concentrated water outlet cavity 204 and flows out from the concentrated water outlet 250.

According to the utility model discloses purifier includes according to the utility model discloses filter element group spare 100. Because according to the utility model discloses the purifier has above-mentioned profitable technological effect, consequently according to the utility model discloses the purifier, encircle first filter core 30 through second filter core 40 and set up, and second filter core 40 includes the RO membrane 41 of concentric coiling and contains charcoal material layer 42, makes RO membrane 41's effective filtration size bigger, can show improvement filtration efficiency and filter effect, and need not to set up rear filter core structure alone, second filter core 40's integrated level is high, manufacturing process and assembly process degree of difficulty are low, be favorable to reduction in production cost.

Other configurations and operations of the water purifier according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present specification, references to the description of the terms "embodiment," "specific embodiment," "example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. A filter element assembly, comprising:

a housing;

the pipe body is arranged in the shell, a rear filter cavity is defined between the outer peripheral surface of the pipe body and the inner peripheral surface of the shell, and a front filter cavity is defined in the pipe body;

the first filter element is arranged in the preposed filter cavity and is used for filtering raw water to obtain preposed water;

the second filter core, the second filter core is located postposition filter chamber is intracavity and is used for filtering leading water, the second filter core includes the RO membrane of concentric coiling and contains the charcoal material layer.

2. The filter element assembly according to claim 1, wherein the first filter element comprises:

a first center tube having a central passage therein for discharging pre-water;

and the filter material layer is arranged between the outer peripheral surface of the first central pipe and the inner peripheral surface of the pipe body and is used for filtering raw water.

3. The filter element assembly according to claim 2, wherein a raw water inlet passage is formed between the filter material layer and the pipe body, a front water outlet passage is formed between the filter material layer and the first central pipe, and one axial end of the central passage is communicated with the front water outlet passage.

4. The filter element assembly according to claim 2, wherein the inner surface of the end wall of the housing is provided with a first cylinder and a second cylinder arranged concentrically,

the first cylinder is in sealing fit with the central pipe and is provided with a preposed water outlet hole communicated with the central channel,

the second barrel with the body seals the cooperation, just the second barrel with form the raw water intake antrum with raw water inlet channel intercommunication between the first barrel.

5. The filter element assembly according to claim 1, wherein the RO membrane and the layer of char-containing material have equal axial lengths.

6. The filter element assembly according to claim 1, wherein the second filter element comprises:

and a pure water outlet channel is defined between the inner peripheral surface of the second central tube and the outer peripheral surface of the tube body, the RO membrane and the carbon-containing material layer are wound outside the second central tube, and a preposed water inlet channel is formed between the outer peripheral surface of the second filter element and the inner peripheral surface of the shell.

7. The filter element assembly according to claim 6, wherein at least one turn of said RO membranes is located radially outside said layer of carbon-containing material.

8. The filter element assembly according to claim 7, wherein at least one of said layers of char-containing material is wrapped around said second base pipe after being arranged in a stack with at least one of said RO membranes.

9. The filter element assembly according to claim 6, wherein said housing has concentrically disposed second, third and fourth cylinders on an inner surface of an end wall thereof, said second filter element comprising an end cap having concentrically disposed first and second peripheral walls, said second cylinder being in sealing engagement with said tubular body, said third cylinder being in sealing engagement with said first peripheral wall, said fourth cylinder being in sealing engagement with said second peripheral wall,

a pure water outlet cavity communicated with the pure water outlet channel is formed between the second cylinder and the third cylinder,

a concentrated water outlet cavity communicated with the axial end parts of the RO membrane and the carbon-containing material layer is formed between the third cylinder and the fourth cylinder,

and a preposed water inlet cavity communicated with the preposed water inlet channel is formed between the fourth cylinder and the peripheral wall of the shell.

10. The filter element assembly according to claim 1, wherein the end wall of the housing is provided with a raw water inlet communicated with the pre-filter chamber, a pure water outlet and a concentrated water outlet communicated with the post-filter chamber, the inlet of the post-filter chamber is communicated with the outlet of the pre-filter chamber,

the raw water inlet is used for introducing raw water into the front-mounted filter chamber, the pure water outlet is used for discharging pure water obtained by filtering the second filter element, and the concentrated water outlet is used for discharging concentrated water generated by filtering the second filter element.

11. The filter element assembly according to claim 1, wherein the end wall of the housing is provided with a raw water inlet and a pre-water outlet which are communicated with the pre-filter chamber, and the end wall is further provided with a pre-water inlet, a pure water outlet and a concentrated water outlet which are communicated with the post-filter chamber,

the raw water inlet is used for introducing raw water into the prepositive filter chamber, the prepositive water outlet is used for discharging prepositive water obtained by filtering the first filter element, the prepositive water inlet is used for introducing prepositive water into the postpositive filter chamber, the pure water outlet is used for discharging pure water obtained by filtering the second filter element, and the concentrated water outlet is used for discharging concentrated water generated by filtering the second filter element.

12. The filter element assembly according to claim 11, wherein the front water outlet is provided at a middle portion of the end wall, and the raw water inlet, the front water inlet, the pure water outlet and the concentrated water outlet are provided around the front water outlet.

13. The filter element assembly according to claim 12, wherein at least two of the raw water inlet, the pre-water inlet, the pure water outlet and the concentrated water outlet are spaced at unequal intervals from the pre-water outlet.

14. A water purification machine comprising a filter element assembly according to any one of claims 1-13.

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