CN111115872A

CN111115872A - Composite filter element and water treatment device with same

Info

Publication number: CN111115872A
Application number: CN201811290069.7A
Authority: CN
Inventors: 李杨敏
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2020-05-08

Abstract

The invention discloses a composite filter element and a water treatment device with the same, wherein the composite filter element comprises: casing, RO filter element group spare, inner tube, second filter tube and waste water stopper are equipped with the waste water mouth on the casing, and RO filter element group spare is established in the casing, inject the waste water chamber that has the intercommunication waste water mouth between RO filter element group spare and the casing, and the inner tube is established in RO filter element group spare, and the second filter tube is established including intraductally, and the waste water stopper is pegged graft in the waste water mouth. According to the composite filter element provided by the embodiment of the invention, the waste water plug is arranged on the waste water port, the pressure of the waste water cavity is increased by utilizing the waste water plug, so that the filtering effect of the RO filter element assembly can be improved, and the waste water plug is arranged on the shell.

Description

Composite filter element and water treatment device with same

Technical Field

The invention belongs to the technical field of household appliances, and particularly relates to a composite filter element and a water treatment device with the same.

Background

In order to improve the filtering effect of the RO filter element assembly, a waste water valve is arranged on a water outlet pipeline of the water treatment device, the working pressure of the RO filter element assembly is increased by utilizing the waste water valve, and then the water purifying effect can be improved. Waste water valve among the correlation technique establishes on water treatment facilities's casing more, and separates the setting with RO filter element group spare, uses waste water valve to break down for a long time and influences RO filter element group spare's normal use easily.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

Therefore, the invention provides a composite filter element, wherein a waste water plug is arranged on the composite filter element, and the waste water plug is replaced simultaneously in the replacement process of the composite filter element, so that the phenomenon that the waste water plug breaks down to influence the normal use of the composite filter element is prevented.

The invention also provides a water treatment device with the composite filter element.

A composite filter element according to an embodiment of the first aspect of the invention comprises: casing, RO filter element group spare, inner tube, second filter tube and waste water stopper, be equipped with the waste water mouth on the casing, RO filter element group spare is established in the casing, RO filter element group spare with inject between the casing and have the intercommunication the waste water chamber at waste water mouth, the inner tube is established in the RO filter element group spare, the second filter tube is established in the inner tube, the waste water stopper is pegged graft in the waste water mouth.

According to the composite filter element provided by the embodiment of the invention, the waste water plug is arranged on the waste water port, the pressure of the waste water cavity is increased by utilizing the waste water plug, so that the filtering effect of the RO filter element assembly can be improved, and the waste water plug is arranged on the shell. And establish the waste water stopper on the casing, can provide convenience for the change of waste water stopper, reduced the degree of difficulty of the change technology of waste water stopper.

According to the composite filter element of one embodiment of the invention, the waste water plug is integrally formed with the shell.

According to one embodiment of the invention, the composite filter element, the waste water plug comprises: the casing pipe is inserted in the waste water port and connected with the shell, and the capillary pipe is arranged on the inner wall of the casing pipe and extends inwards along the radial direction of the casing pipe.

According to one embodiment of the invention, the bushing comprises: the plug-in section is plugged in the waste water port and extends along the axial direction of the waste water port, and the guide section is communicated with the plug-in section.

According to one embodiment of the invention, the capillary tube is arranged in the insertion section, the radial inner end of the capillary tube is matched to define a flow guide channel, a water guide column extending along the axial direction of the guide section is arranged in the guide section, and the water guide column closes the flow guide channel.

According to one embodiment of the invention, the guide section is perpendicular to the plug section.

According to the composite filter element provided by the embodiment of the invention, the shell is provided with a tap water inlet, a purified water outlet, a purified water inlet and a purified water outlet; the outer wall of the RO filter element assembly and the inner wall of the shell define a first purified water cavity communicated with the purified water inlet; the inner wall of the RO filter element assembly and the outer wall of the inner pipe define a pure water cavity communicated with the pure water outlet; the inner wall of the inner pipe and the outer wall of the second filter pipe define a tap water cavity communicated with the tap water inlet; and a second purified water cavity communicated with the purified water outlet is defined in the second filter pipe.

According to one embodiment of the invention, the housing comprises: barrel and lower cover, the bottom of barrel is opened, the inner tube RO filter element group spare with the second filter tube is established in the barrel, the running water entry the water purification export the water purification entry the pure water export with the waste water mouth all establishes the top of barrel, the lower housing is established the bottom of barrel, the lower cover with the barrel links to each other in order to seal the uncovered opening of barrel.

According to one embodiment of the invention, the RO cartridge assembly comprises: center tube, RO filter membrane and annular inner cup, inject the open filter media installation cavity in upper end in the center tube, the inner tube is established in the filter media installation cavity, be formed with the pure water through-hole on the wall of center tube, the RO filter membrane cover is established on the center tube, annular inner cup cover is established on the center tube, the interior week of annular inner cup along with the upper end of inner tube is along linking to each other, just the lower terminal surface of annular inner cup with the up end of RO filter membrane ends to.

According to one embodiment of the invention, a waste water groove which is open downwards is defined in the annular inner cover, the upper end surface of the RO filter membrane and the annular inner cover are matched to seal the waste water groove to form a waste water cavity, and a waste water channel which is communicated with the waste water cavity and the waste water opening is arranged at the top of the inner cover.

According to one embodiment of the invention, the second filtering conduit comprises: the PAC filter membrane comprises a PAC framework, a PAC filter membrane, a PAC upper end cover and a PAC lower end cover, wherein the PAC framework is positioned in the inner tube and extends along the axial direction of the inner tube, the PAC filter membrane is sleeved on the PAC framework and extends along the axial direction of the PAC framework, the PAC upper end cover is sleeved on the upper part of the PAC framework, the lower surface of the PAC upper end cover is in sealing butt joint with the upper end surface of the PAC filter membrane, the PAC lower end cover is sleeved on the lower part of the PAC framework, and the upper surface of the PAC lower end cover is in.

According to one embodiment of the invention, the composite filter element further comprises: the active carbon filter core, the active carbon filter core is established pure water intracavity and be located the below of inner tube, the active carbon filter core will the pure water chamber is separated to be located former pure water chamber outside the active carbon filter core and being located go out the water cavity in the active carbon filter core, it communicates to go out the water cavity pure water outlet.

According to one embodiment of the invention, the pure water outlet is located at the top of the housing, the composite filter element further comprising: the water outlet pipe penetrates through the inner pipe along the axial direction of the inner pipe, the upper end of the water outlet pipe is communicated with the pure water outlet, and the lower end of the water outlet pipe is communicated with the water outlet cavity.

The water treatment device according to the second aspect of the embodiment of the invention comprises the composite filter element according to the embodiment.

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 diagram of a composite filter element according to an embodiment of the invention;

FIG. 2 is a schematic view of a partial configuration of a composite filter element according to an embodiment of the invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is an exploded view of the mechanism of FIG. 4;

FIG. 6 is an exploded view of a housing of a composite filter element according to an embodiment of the present invention;

FIG. 7 is a schematic illustration of the mating of an inner tube and an activated carbon filter element according to an embodiment of the invention;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7;

FIG. 9 is a schematic structural view of an annular inner cap according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view of an annular inner cap according to an embodiment of the present invention;

FIG. 11 is a top view of an annular inner cap according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a center tube according to an embodiment of the present invention;

FIG. 13 is a cross-sectional view of a center tube according to an embodiment of the present invention;

FIG. 14 is a side view of a base pipe according to an embodiment of the present invention;

FIG. 15 is a schematic structural view of a waste plug according to an embodiment of the present invention;

FIG. 16 is a front view of a waste plug according to an embodiment of the present invention;

FIG. 17 is a cross-sectional view taken along line D-D of FIG. 16;

fig. 18 is a sectional view taken along line E-E of fig. 16.

Reference numerals:

100: a composite filter element;

10: a housing; 11: a barrel; 111: a tap water inlet; 112: a purified water outlet; 113: a purified water inlet; 114: a pure water outlet; 115: a waste water outlet; 12: a lower cover; 13: an adapter; 14: a waste water plug; 141: a plug section; 142: a guide section; 1421: a water guide column; 15: a decorative cover; 16: a handle.

20: an RO filter element assembly; 21: a central tube; 211: enclosing plates; 2111: a pure water through hole; 2112: a water chute; 212: a lower cover plate; 213: a support table; 22: an RO filter membrane; 23: an annular inner cover; 231: a waste water chamber; 232: a waste water port;

30: an inner tube;

40: a second filter element assembly; 41: a PAC skeleton; 42: a PAC filter membrane; 43: a PAC upper end cap; 44: a PAC lower end cap;

50: an activated carbon filter element; 51: a first purified water chamber; 52: a pure water chamber; 521: a water outlet cavity; 522: an original pure water cavity; 53: a tap water chamber; 54: a second purified water cavity;

60: and (5) discharging a water pipe.

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 or similar 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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A composite filter cartridge 100 and a water treatment apparatus having the same according to an embodiment of the present invention will be described with reference to fig. 1 to 18.

As shown in fig. 1-4, according to one embodiment of the present invention, a composite filter element 100 includes: housing 10, RO cartridge assembly 20, inner tube 30, second filter assembly 20, and waste plug 14.

Wherein, be equipped with waste water mouth 232 on the casing 10, RO filter element group spare 20 produces pure water and waste water in the use, and the pure water supplies the user to drink, and waste water discharges and can be used for other uses. The RO filter cartridge assembly 20 is provided in the housing 10, a waste water chamber 231 communicating with a waste water port 232 is defined between the RO filter cartridge assembly 20 and the housing 10, and waste water generated from the RO filter cartridge assembly 20 is collected in the waste water chamber 231 and discharged through the waste water port 232.

Inner tube 30 is established in RO filter element group spare 20, and second filter element group spare 20 is established in inner tube 30, through integrated second filter element group spare 40 in inner tube 30, can save second filter element group spare 40 occupation space, can promote composite filter element 100's water purification effect moreover.

Further, the waste water plug 14 is inserted into the waste water port 232, during the waste water discharging process, the waste water plug 14 functions similarly to a waste water valve in the prior art, and the waste water plug 14 generates a certain resistance to the water in the waste water chamber 231, for example, when the water pressure in the waste water chamber 231 reaches a predetermined pressure value, the waste water plug 14 is conducted, and the waste water is discharged from the waste water chamber 231.

Therefore, according to the composite filter element 100 of the embodiment of the invention, the waste water plug 14 is arranged on the waste water port 232, the waste water plug 14 is used for increasing the pressure of the waste water cavity 231, so as to further improve the filtering effect of the RO filter element assembly 20, and the waste water plug 14 is arranged on the shell 10, when the composite filter element 100 reaches the service cycle for replacement, the waste water plug 14 is replaced together, so that the waste water plug 14 on the composite filter element 100 is ensured to be replaced regularly, and the phenomenon that the waste water plug 14 is not replaced for a long time and is damaged to influence the normal work of the composite filter element 100 is prevented. And the waste water plug 14 is arranged on the shell 10, so that convenience is provided for replacing the waste water plug 14, and the difficulty of the replacement process of the waste water plug 14 is reduced.

In some implementations, the waste plug 14 is integrally formed with the housing 10, for example, the waste plug 14 may be integrally formed on the housing 10. Therefore, the connection strength and the stability of the waste water plug 14 and the shell 10 can be improved, the waste water plug 14 is prevented from being separated, the connection mechanism between the waste water plug 14 and the shell 10 can be saved, the assembly efficiency of the waste water plug 14 is favorably improved, in addition, the mechanism stability of the integrated forming is enhanced, and the service life of the composite filter element 100 can be prolonged.

As shown in fig. 18, in the present embodiment, the waste plug 14 includes: a sleeve inserted into the waste water port 232 and connected to the housing 10, and a plurality of capillaries provided on an inner wall of the sleeve and extending radially inward of the sleeve.

The number of the capillaries is large, the capillaries are arranged along the circumferential direction of the sleeve to form a capillary group, and the capillary group is filled in the sleeve along the axial direction of the sleeve. The waste water plug 14 of the above structure has a simple structure and is easy to manufacture, and the water purification effect of the RO filter element assembly 20 can be effectively improved.

As shown in fig. 15, in the present embodiment, the grommet includes: the waste water treatment device comprises an insertion section 141 and a guide section 142, wherein one end of the insertion section 141 is inserted into the waste water port 232, the insertion section 141 extends along the axial direction of the waste water port 232, and the guide section 142 is communicated with the other end of the insertion section 141. Capillaries are arranged in the insertion section 141 and the guide section 142, or the capillaries can be arranged only in the insertion section 141 or the guide section 142.

The sleeve pipe of above-mentioned structure not only can increase the water pressure of waste water mouth 232, and grafting section 141 pegs graft in waste water mouth 232 in addition, and stability and leakproofness are better, and guide section 142 is suitable for intercommunication waste water mouth 232 and waste water drainage pipe, and wherein, guide section 142 perpendicular to grafting section 141 makes things convenient for waste water drainage pipe to connect guide section 142, can provide convenience for waste water discharge.

As shown in fig. 16 to 18, according to an embodiment of the present invention, the capillary tube is disposed in the insertion section 141, a radial inner end of the capillary tube is matched to define a flow guiding channel, the capillary tube is matched with the insertion section 141 to define the flow guiding channel, the diameter of the flow guiding channel is smaller, when a water flow passes through the flow guiding channel, the resistance of the water flow is larger, a water guiding column 1421 extending along an axial direction of the flow guiding section 142 is disposed in the flow guiding section 142, the water guiding column 1421 closes the flow guiding channel, the flow guiding channel is closed by the water guiding column 1421, and the water flow passes through the capillary tube and enters the flow guiding section from the insertion section 141, so that a pressure effect of the waste water.

As shown in fig. 1, in the composite filter element 100 according to an embodiment of the present invention, a tap water inlet 111, a purified water outlet 112, a purified water inlet 113, and a purified water outlet 114 are provided on the housing 10.

The outer wall of the RO cartridge assembly 20 and the inner wall of the housing 10 define a first purified water chamber 51 communicating with the purified water inlet 113, the inner wall of the RO cartridge assembly 20 and the outer wall of the inner tube 30 define a purified water chamber 52 communicating with the purified water outlet 114, the inner wall of the inner tube 30 and the outer wall of the second cartridge assembly 40 define a tap water chamber 53 communicating with the tap water inlet 111, and the second cartridge assembly 40 defines a second purified water chamber 54 communicating with the purified water outlet 112.

Water flow enters the tap water cavity 53 through the tap water inlet 111, water flow in the tap water cavity 53 enters the second purified water cavity 54 through the filtering action of the second filter element assembly 40 and flows out through the purified water outlet 112, the flowing purified water enters the first purified water cavity 51 through the purified water inlet 113 through the action of the booster pump, water flow in the first purified water cavity 51 enters the purified water cavity 52 through the filtering action of the RO filter element assembly 20, and water flow in the purified water cavity 52 flows out through the purified water outlet 114 for drinking by a user.

Wherein, the clearance between the inner wall of casing 10 and the outer wall of RO filter element subassembly 20 is 1.2mm, and the clearance between the inner wall of RO filter element subassembly 20 and the outer wall of inner tube 30 is 1.2mm, and the clearance between the inner wall of inner tube 30 and the outer wall of second filter element subassembly 40 is 1.2 mm. Therefore, normal passing of water flow can be guaranteed, the volumes of the RO filter element assembly 20 and the shell 10 can be reduced, and the space utilization efficiency is improved.

Moreover, utilize the cooperation of the inner wall of casing 10, the inner wall of RO filter element subassembly 20, the outer wall of RO filter element subassembly 20, the inner wall of inner tube 30, the outer wall of inner tube 30 and the outer wall of second filter element subassembly 40 to inject first water purification chamber 51, second water purification chamber 54, running water chamber 53 and pure water chamber 52, simple structure realizes easily, is favorable to simplifying the structural design of composite filter element 100, can reduce composite filter element 100's manufacturing cost moreover.

As shown in fig. 6, according to one embodiment of the present invention, the housing 10 includes: the bottom of the cylinder body 11 is opened, the first filter element is arranged in the cylinder body 11, the tap water inlet 111, the purified water outlet 112, the purified water inlet 113 and the purified water outlet 114 are arranged at the top of the cylinder body 11, the lower cover 12 is connected with the cylinder body 11 to seal the opening of the cylinder body 11, and the upper surface of the lower cover 12 is in sealing butt joint with the lower end surface of the first filter element.

As shown in fig. 12-14, in this embodiment, the first cartridge includes: the improved RO filter comprises a central tube 21, an RO filter membrane 22 and an annular inner cover 23, wherein the central tube 21 extends along the axial direction of the shell 10, the upper end of the central tube 21 is opened to define a built-in filter material installation cavity, the upper end of the built-in filter material installation cavity is opened, the inner tube 30 is arranged in the central tube 21, a pure water cavity 52 is defined between the inner wall of the central tube 21 and the outer wall of the inner tube 30, the RO filter membrane 22 is a reverse osmosis filter membrane, and the RO filter membrane 22 is sleeved on the central tube 21. The annular inner cover 23 is sleeved on the central tube 21, the inner peripheral edge of the annular inner cover 23 is in sealing butt joint with the upper edge of the inner tube 30, and the lower surface of the annular inner cover 23 is in sealing fit with the upper end face of the RO filter membrane 22.

Wherein, the wall of the central tube 21 is formed with pure water through holes 2111, the pure water through holes 2111 penetrate the wall of the central tube 21 along the thickness direction of the wall of the central tube 21, the water flow enters the RO filter membrane 22 from the lower end of the RO filter membrane 22, the RO filter membrane 22 filters and separates the water flow into wastewater and pure water, and the wastewater flows out from the upper end of the RO filter membrane 22 and is discharged through the wastewater chamber 231 and the wastewater outlet 115. The pure water flows out from the inner wall of the RO filter membrane 22 and enters the pure water chamber 52 through the pure water passing hole 2111, and is discharged through the pure water outlet 114 for the user to drink.

Further, as shown in fig. 9 to 11, a waste water opening 232 is formed in the annular inner cover 23, a waste water groove with an open lower surface is defined in the annular inner cover 23, the waste water groove extends along the circumferential direction of the annular inner cover 23, the upper end surface of the RO filter membrane 22 and the annular inner cover 23 cooperate to close the waste water groove to form a waste water chamber 231, and a waste water passage communicating the waste water chamber 231 with the waste water outlet 115 is defined in the annular inner cover 23.

The RO filter element assembly 20 separates the wastewater during the filtering process, and the wastewater can be guided to be discharged by arranging the wastewater port 232, the wastewater chamber 231 and the wastewater passage. The waste water chamber 231 is defined on the annular inner cover 23, so that the waste water can be prevented from being mixed into the first purified water chamber 51, the pure water chamber 52, the tap water chamber 53 and the second purified water chamber 54, and the quality of the filtered water flow can be improved. And RO filter element group spare 20's waste water is followed RO filter element group spare 20's tip and is discharged, inject waste water chamber 231 on annular inner cup 23, can provide convenience for waste water gets into waste water chamber 231, and simple structure has eliminated the water conservancy diversion passageway between RO filter element group spare 20 and the waste water chamber 231 moreover, has simplified composite filter element 100's structural design and water route design.

As shown in fig. 3 and 8, in the present embodiment, the second filter cartridge assembly 40 is a PAC filter cartridge, the second filter cartridge assembly 40 comprising: PAC skeleton 41 and PAC filter membrane 42, PAC skeleton 41 is located inner tube 30 and extends along the axial of inner tube 30, and PAC filter membrane 42 cover is established on PAC skeleton 41 and extends along the axial of PAC skeleton 41, and PAC filter membrane 42 is the tubulose filter piece that polymerized aluminium chloride material made, and PAC filter membrane 42's thickness is greater than 10 mm.

Wherein, PAC skeleton 41 is internal to define second clear water chamber 54, and PAC filter membrane 42 outer wall and the inner wall of inner tube 30 define the running water chamber 53, and the running water passes through running water inlet 111 and gets into running water chamber 53, and the rivers are crossed PAC filter membrane 42 and are flowed out from the inner wall of PAC skeleton 41 and get into second clear water chamber 54 through the filtration of PAC filter membrane 42, then flow out from clear water outlet 112.

Because the filter effect of PAC filter membrane 42 is related to the thickness that rivers passed PAC filter membrane 42, consequently constitute second filter element group 40 and establish in inner tube 30 with PAC filter membrane 42 and PAC skeleton 41, reduced the diameter of second filter element group 40, and then can reduce the occupation space of second filter element group 40, can reduce PAC filter membrane 42's volume and production material moreover, be favorable to reduce cost.

As shown in fig. 3 and 8, in the present embodiment, the second filter element assembly 40 further includes: PAC upper end lid 43 and PAC lower end lid 44, PAC upper end lid 43 cover is established at PAC skeleton 41's upper end, and PAC upper end lid 43's lower surface seals the up end of propping up PAC filter membrane 42, and PAC lower end lid 44 cover is established at PAC skeleton 41's lower extreme, and PAC lower end lid 44's upper surface seals the lower terminal surface of propping up PAC filter membrane 42. And water outlet pipe 60 passes through PAC upper end cap 43 and PAC lower end cap 44, and the outer circumferential edge of PAC lower end cap 44 is in sealing engagement with the inner circumferential wall of inner pipe 30.

By arranging the PAC upper end cap 43 and the PAC lower end cap 44, the sealing of the upper end and the lower end of the PAC filter membrane 42 can be improved, the water flow in the PAC filter membrane 42 is prevented from flowing out from the upper end or the lower end of the PAC filter membrane 42, and the sealing of the tap water chamber 53 can be improved.

As shown in fig. 8, in this embodiment, the PAC upper end cover 43 has an upper flange formed along the outer periphery thereof and folded downward, the inner wall of the upper flange abuts against the outer peripheral wall of the PAC filter 42, and the outer wall of the upper flange and the inner wall of the inner tube 30 define a tap water passage through which water flows from the tap water inlet 111 into the tap water chamber 53.

The outer periphery of the PAC lower end cover 44 is formed with a downward flanging which is turned upwards, the inner wall of the downward flanging is abutted against the outer peripheral wall of the PAC filter membrane 42, and the outer wall of the downward flanging is sealed and abutted against the inner peripheral wall of the inner tube 30.

Thereby, the performance of the second filter element assembly 40 can be improved, and the tightness and reliability of the tap water chamber 53 can be improved to prevent water leakage.

According to an embodiment of the present invention, further comprising: the active carbon filter element 50 is arranged in the central tube 21 and is in sealing butt joint between the lower end of the inner tube 30 and the bottom wall of the filter material installation cavity, the active carbon filter element 50 is arranged in the pure water cavity 52, and the active carbon filter element 50 divides the pure water cavity 52 into a raw pure water cavity 522 positioned outside the active carbon filter element 50 and a water outlet cavity 521 positioned in the active carbon filter element 50. The water outlet pipe 60 extends along the axial direction of the inner pipe 30 and penetrates through the inner pipe 30, one end (the lower end shown in fig. 4) of the water outlet pipe 60 is communicated with the water outlet cavity 521, and the other end (the upper end shown in fig. 4) of the water outlet pipe 60 is communicated with the pure water outlet 114.

That is, the pure water filtered by the RO filter element assembly 20 enters the original pure water chamber 522, the water in the original pure water chamber 522 passes through the activated carbon filter element 50, and enters the water outlet chamber 521 through the filtering action of the activated carbon filter element 50, so that the impurities or the peculiar smell in the water can be further clarified. The water after RO filter element group spare 20 filters becomes the faintly acid, and the taste is relatively poor, is unsuitable for the user to directly drink, through the filtering action of live heart carbon filter core, can further promote the quality of pure water, has promoted the taste of drinking water.

In the present embodiment, the activated carbon filter element 50 and the inner tube 30 are arranged along the axial direction of the filter material installation cavity, the activated carbon filter element 50 is disposed at the bottom of the built-in filter material installation cavity, the inner tube 30 is disposed at the top of the activated carbon filter element 50, and the pure water outlet 114 is located at the top of the housing 10. Along the active carbon filter core 50 and the inner tube 30 of RO filter element group spare 20's axial arrangement, the space of the built-in filter media installation cavity of make full use of can be favorable to dwindling the internal diameter of built-in filter media installation cavity, and then can reduce the diameter and the volume of RO filter element group spare 20, the active carbon filter core 50 and the inner tube 30 simple structure of above-mentioned structure moreover, convenient assembling.

The pure water outlet 114 is located above the inner tube 30, the water outlet cavity 521 is located in the activated carbon filter element 50 and below the inner tube 30, and by arranging the water outlet tube 60, convenience can be provided for the water flow in the water outlet cavity 521 to flow out from the pure water outlet 114, and the water outlet tube 60 is simple in structure and easy to implement.

Moreover, the activated carbon filter element 50 is arranged in the pure water cavity 52, so that the compounding degree of the composite filter element 100 can be further improved, the filtering effect of the composite filter element 100 on water flow is improved, and compared with the independent arrangement of the activated carbon filter element 50, the water flow design of the composite filter element 100 can be simplified, and the volume of the composite filter element 100 can be reduced.

Further, PAC framework 41 is tubular, PAC framework 41 is sleeved on water outlet pipe 60, the outer wall of water outlet pipe 60 and the inner wall of PAC framework 41 define second water purifying cavity 54, and a plurality of holes penetrating through the wall of PAC framework 41 along the thickness direction of the wall of PAC framework 41 are formed on the wall of PAC framework 41. By arranging the holes on the wall of the PAC framework 41, the water flow in the PAC filter membrane 42 can be promoted to pass through the holes and enter the second water purifying cavity 54, and the PAC framework 41 is sleeved on the water outlet pipe 60, so that the occupied space of the water outlet pipe 60 can be further saved, and the volume of the composite filter element 100 can be further reduced.

PAC lower end cap 44 overlaps and establishes on outlet pipe 60, and the internal perisporium of PAC lower end cap 44 links to each other with the periphery wall of outlet pipe 60, can promote the leakproofness of second net chamber 54 from this, and in addition, PAC lower end cap 44 can be integrated into one piece with outlet pipe 60.

In the present embodiment, the center pipe 21 includes: the filter membrane comprises a surrounding plate 211 and a lower cover plate 212, wherein the surrounding plate 211 is in a cylinder shape with two open ends, the RO filter membrane 22 is sleeved on the surrounding plate 211, the lower cover plate 212 is arranged in the surrounding plate 211 and is positioned at the lower part of the surrounding plate 211, the lower cover plate 212 closes the opening at the lower end of the surrounding plate 211 and is matched with the surrounding plate 211 to define a built-in filter material installation cavity, and the lower end of the activated carbon filter element 50 is abutted against the upper surface of. That is, the center tube 21 is formed in a cylindrical shape having an open upper end and a closed lower end, and the inner wall of the shroud 211, the upper surface of the lower end cap, and the outer surface of the inner tube 30 cooperate to define the pure water chamber 52.

The wall of the center tube 21 is formed with deionized water passing holes 2111, the deionized water passing holes 2111 penetrate the wall of the center tube 21 in the thickness direction of the wall of the center tube 21, the water flows into the RO filter membrane 22 from the lower end of the RO filter membrane 22, the RO filter membrane 22 filters the water flow to separate the water into waste water and deionized water, and the waste water flows out from the upper end of the RO filter membrane 22 and is discharged through the waste water chamber 231 and the waste water outlet 115. The pure water flows out from the inner wall of the RO filter membrane 22 and enters the pure water chamber 52 through the pure water passing hole 2111, and is discharged through the pure water outlet 114 for the user to drink.

As shown in fig. 12, a water guide groove 2112 communicating with the deionized water passage 2111 is formed in the outer peripheral wall of the shroud 211, the water guide groove 2112 is recessed inward with respect to the outer peripheral wall of the shroud 211, and the water filtered by the RO filter membrane 22 flows into the deionized water passage 2111 through the water guide groove 2112, is collected in the filter medium installation chamber, and is then discharged.

Because RO filter membrane 22 is around establishing on bounding wall 211, through set up guiding gutter 2112 on bounding wall 211, can increase the flow efficiency of leading out rivers in the RO filter membrane 22, increase RO filter membrane 22's play water efficiency, and then can promote RO filter element group spare's water purification efficiency.

As shown in fig. 12, the water chute 2112 extends along the circumferential direction of the enclosing plate 211, that is, the water chute 2112 is formed into an annular shape extending along the circumferential direction of the enclosing plate 211, and the pure water through holes 2111 are provided in the water chute 2112, so that the length of the water chute 2112 can be further increased, the water outlet efficiency of the RO filter membrane 22 is further improved, the uniform water outlet efficiency of the RO filter membrane 22 in the circumferential direction can be ensured, and the influence of the partial water outlet on the water purification efficiency of the RO filter membrane 22 due to the obstruction of the water outlet can be prevented.

The lower end of the central tube 21 with the structure is closed, so that the leakage of pure water flow from the lower end of the pure water cavity 52 can be prevented, and the tightness of the upper end of the central tube 21 only needs to be noticed in the RO filter element assembling process.

As shown in fig. 13 and 14, in the present embodiment, the inner wall of the shroud 211 is formed with a support base 213 projecting inward in the radial direction of the shroud 211, the support base 213 has an upper surface, the lower end of the inner tube 30 abuts against the upper surface of the support base 213, and the activated carbon filter element 50 is provided below the inner tube 30, inside the support base 213.

Through set up on bounding wall 211 with inner tube 30 complex brace table 213, can provide convenience for the assembly of inner tube 30, brace table 213 can promote the assembly stability of inner tube 30 to the supporting role of inner tube 30, can reduce the squeezing action of inner tube 30 to activated carbon filter element 50 in addition, prevents that inner tube 30 pressure from too big causing the damage to activated carbon filter element 50, is favorable to prolonging activated carbon filter element 50's life.

Further, the support base 213 extends in the circumferential direction of the shroud 211, that is, the support base 213 is formed in a ring shape extending in the circumferential direction of the shroud 211, the support base 213 may also extend in the axial direction of the shroud 211 to be formed in a tubular shape, the lower end of the support base 213 abuts against the upper surface of the lower end cap of the center tube 21, and the activated carbon filter element 50 is disposed in the support base 213.

The tubular support table 213 can improve the force uniformity of the inner tube 30, and prevent the inner tube 30 from being damaged or inclined due to uneven local force. Wherein, the support table 213, bounding wall 211 and lower extreme cover integrated into one piece, that is to say, center tube 21 is integrated into one piece, integrated into one piece's center tube 21 can promote support table 213, the stability of being connected and joint strength between bounding wall 211 and the lower extreme cover, and then can promote center tube 21's functional stability and reliability, and can eliminate support table 213, the coupling mechanism between bounding wall 211 and the lower extreme cover, the assembly efficiency of center tube 21 and composite filter element 100 has been promoted, and integrated into one piece's center tube 21's intensity is big, long service life.

As shown in fig. 6, according to one embodiment of the present invention, the housing 10 includes: barrel 11 and lower cover 12, the bottom of barrel 11 is opened, RO filter element group spare 20 is established in barrel 11, and running water entry 111, water purification export 112, water purification entry 113 and pure water export 114 are all established at the top of barrel 11, and lower cover 12 links to each other with the opening of closed barrel 11 with barrel 11, and the upper surface of lower cover 12 and the sealed butt of the lower terminal surface of RO filter element group spare 20.

Wherein, still be equipped with four adapter 13 on the casing 10, four adapter 13 pegging graft in running water entry 111, water purification export 112, water purification entry 113 and pure water export 114 one-to-one, provide convenience for composite filter 100 assembles the water route through setting up adapter 13, promoted the leakproofness in water route moreover.

Wherein, still be equipped with decorative cover 15 on the casing 10, decorative cover 15 covers the top of establishing at barrel 11, and running water inlet 111, water purification export 112, water purification entry 113, pure water export 114 and waste water export 115 all cover and establish in decorative cover 15, have promoted the outward appearance regularity of composite filter element 100 from this.

In this embodiment, the top of barrel 11 still is equipped with handle 16, is equipped with the first tie point and the second tie point of spaced apart arrangement on the lateral wall of barrel 11, and first tie point is connected to the one end of handle 16, and the second tie point is connected to the other end, and when demolising or assembling composite filter element 100, the user gets through promoting 16 and puts composite filter element 100, convenient operation, and stability is strong, and handle 16 simple structure realizes easily moreover.

In the assembly process of the composite filter element 100, firstly, the RO filter membrane 22 is wound on the central tube 21, then the activated carbon filter element 50 is arranged in the built-in filter material installation cavity, then the inner tube 30 is assembled in the built-in filter material installation cavity, the lower end of the inner tube 30 is abutted against the activated carbon filter element 50, then the water outlet tube 60 is inserted in the inner tube 30, then the second filter element assembly 40 is sleeved on the water outlet tube 60, finally, the annular inner cover 23 is covered on the central tube 21, and the water outlet tube 60 and the PAC annular upper end cover 43 extend out from the middle part of the annular inner cover 23. Then the RO filter element assembly 20 is inserted in the cylinder body 11, a first water channel, a second water channel, a third water channel, a fourth water channel and a fifth water channel are arranged on the top wall of the inner cavity of the cylinder body 11, the first water channel is communicated with a pure water outlet 114 and a water outlet pipe 60, one end of the second water channel is communicated with a tap water inlet 111, and the other end of the second water channel is communicated with a channel between the outer peripheral wall of the PAC annular upper end cover 43 and the inner peripheral wall of the annular inner cover 23; one end of the third water channel is communicated with the purified water outlet 112, the other end of the third water channel is communicated with a channel between the inner peripheral wall of the PAC annular upper end cover 43 and the outer peripheral wall of the water outlet pipe 60, one end of the fourth water channel is communicated with the purified water inlet 113, the other end of the fourth water channel is communicated with a channel between the outer peripheral wall of the RO filter membrane 22 and the inner peripheral wall of the cylinder body 11, and the fifth water channel is communicated with the wastewater outlet 115 and.

In this embodiment, the central axis of the RO cartridge assembly 20, the central axis of the second cartridge assembly 40, the central axis of the inner tube 30, and the central axis of the outlet tube 60 coincide with the central axis of the housing 10. That is to say, outlet pipe 60, second filter element group spare 40, inner tube 30, RO filter element group spare 20 and casing 10 are nested in proper order and are set up, can reduce the occupation space of outlet pipe 60, second filter element group spare 40, inner tube 30 and RO filter element group spare 20 from this, have promoted composite filter element 100 inner space's utilization efficiency, and then can reduce the volume of casing 10, provide convenience for composite filter element 100's use and assembly.

The water treatment device according to the second aspect of the embodiment of the present invention includes the composite filter element 100, the booster pump and the tank described in the above embodiments.

Specifically, the box body is provided with a water supply device, a water outlet and a water outlet, the composite filter element 100 and the booster pump are arranged in the box body, the water supply device is communicated with a tap water inlet 111 to supply water for the water treatment device, the booster pump is communicated between a purified water outlet 112 and a purified water inlet 113 and is used for pumping the water flowing out of the second purified water cavity 54 into the first purified water cavity 51 after being pressurized, the water outlet is communicated with a purified water outlet 114 to supply water for a user, and the water outlet is communicated with a wastewater outlet 115 to discharge.

According to the water treatment device of the second aspect of the present invention, including the composite filter element 100 described in the above embodiment, by using the composite filter element 100 in the above embodiment, the volume of the water treatment device can be reduced, the occupied space can be saved, the effluent quality can be improved, and convenience is provided for users.

Other constructions and operations of water treatment devices according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 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

1. A composite filter element, comprising:

the device comprises a shell, a water inlet and a water outlet, wherein a waste water port is formed in the shell;

the RO filter element assembly is arranged in the shell, and a waste water cavity communicated with the waste water port is defined between the RO filter element assembly and the shell;

an inner tube disposed within the RO cartridge assembly;

the second filtering pipe is arranged in the inner pipe;

the waste water plug is inserted in the waste water port.

2. The composite filter element of claim 1, wherein the waste plug is integrally formed with the housing.

3. The composite filter element of claim 1, wherein the waste plug comprises:

the sleeve is inserted in the waste water port and connected with the shell;

a plurality of capillaries disposed on an inner wall of the sleeve and extending radially inward of the sleeve.

4. The composite filter element of claim 3, wherein the sleeve comprises:

the inserting section is inserted in the waste water port and extends along the axial direction of the waste water port;

and the guide section is communicated with the insertion section.

5. The composite filter element of claim 4, wherein the capillary tube is disposed in the plug section, a radial inner end of the capillary tube is matched to define a flow guide channel, a water guide column extending along an axial direction of the guide section is disposed in the guide section, and the water guide column closes the flow guide channel.

6. The composite filter element of claim 4, wherein the guide segment is perpendicular to the plug segment.

7. The composite filter element of claim 1, wherein the housing is provided with a tap water inlet, a purified water outlet, a purified water inlet and a purified water outlet;

the outer wall of the RO filter element assembly and the inner wall of the shell define a first purified water cavity communicated with the purified water inlet;

the inner wall of the RO filter element assembly and the outer wall of the inner pipe define a pure water cavity communicated with the pure water outlet;

the inner wall of the inner pipe and the outer wall of the second filter pipe define a tap water cavity communicated with the tap water inlet;

and a second purified water cavity communicated with the purified water outlet is defined in the second filter pipe.

8. The composite filter cartridge of claim 7, wherein the housing comprises:

the bottom of the cylinder is open, the inner pipe, the RO filter element assembly and the second filter pipe are arranged in the cylinder, and the tap water inlet, the purified water outlet, the purified water inlet, the purified water outlet and the wastewater opening are all arranged at the top of the cylinder;

the lower cover is arranged at the bottom of the barrel body and connected with the barrel body to seal the open opening of the barrel body.

9. The composite filter element of claim 1, wherein the RO cartridge assembly comprises:

the water purifier comprises a central tube, a filter material mounting cavity with an open upper end is limited in the central tube, the inner tube is arranged in the filter material mounting cavity, and a pure water through hole is formed in the wall of the central tube;

the RO filter membrane is sleeved on the central tube;

the annular inner cup, annular inner cup cover is established on the center tube, the interior week edge of annular inner cup with the upper end edge of inner tube links to each other, just the lower terminal surface of annular inner cup with the up end of RO filter membrane ends.

10. The composite filter element according to claim 9, wherein a waste water groove which is open downwards is defined in the annular inner cover, the upper end surface of the RO filter membrane is matched with the annular inner cover to seal the waste water groove to form a waste water cavity, and a waste water channel which is communicated with the waste water cavity and the waste water opening is arranged at the top of the inner cover.

11. The composite filter cartridge of claim 1, wherein the second filter tube comprises:

a PAC framework located within the inner tube and extending in an axial direction of the inner tube;

the PAC filter membrane is sleeved on the PAC framework and extends along the axial direction of the PAC framework;

the PAC upper end cover is sleeved at the upper part of the PAC framework, and the lower surface of the PAC upper end cover is in sealing and abutting joint with the upper end surface of the PAC filter membrane;

the PAC lower end cover is sleeved at the lower part of the PAC framework, and the upper surface of the PAC lower end cover is in sealing and abutting joint with the lower end surface of the PAC filter membrane.

12. The composite filter element of claim 7, further comprising:

the active carbon filter core, the active carbon filter core is established pure water intracavity and be located the below of inner tube, the active carbon filter core will the pure water chamber is separated to be located former pure water chamber outside the active carbon filter core and being located go out the water cavity in the active carbon filter core, it communicates to go out the water cavity pure water outlet.

13. The composite filter cartridge of claim 12, wherein the pure water outlet is located at the top of the housing, the composite filter cartridge further comprising:

the water outlet pipe penetrates through the inner pipe along the axial direction of the inner pipe, the upper end of the water outlet pipe is communicated with the pure water outlet, and the lower end of the water outlet pipe is communicated with the water outlet cavity.

14. A water treatment device comprising a composite filter element according to any one of claims 1 to 13.