CN111115757B - RO filter element assembly, composite filter element with RO filter element assembly and water treatment device - Google Patents
RO filter element assembly, composite filter element with RO filter element assembly and water treatment device Download PDFInfo
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- CN111115757B CN111115757B CN201811291602.1A CN201811291602A CN111115757B CN 111115757 B CN111115757 B CN 111115757B CN 201811291602 A CN201811291602 A CN 201811291602A CN 111115757 B CN111115757 B CN 111115757B
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- filter element
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses an RO filter element assembly, a composite filter element with the RO filter element assembly and a water treatment device, wherein the RO filter element assembly comprises: the filter comprises a central tube and an RO filter membrane, wherein a filter material mounting cavity is defined in the central tube, a pure water through hole is formed in the wall of the central tube, the RO filter membrane is sleeved on the central tube, and the RO filter membrane covers the pure water through hole. According to the RO filter element assembly provided by the embodiment of the invention, the filter material installation cavity is defined in the central tube, and the filter material can be accommodated in the filter material installation cavity, so that convenience is provided for compounding of various filter elements, the internal space of the RO filter element assembly can be fully utilized, the whole volume of the compound filter element can be reduced, and the filtering effect of the compound filter element can be improved.
Description
Technical Field
The invention belongs to the technical field of household appliances, and particularly relates to an RO filter element assembly, a composite filter element with the RO filter element assembly and a water treatment device.
Background
In the related art, the central tube of the RO filter element assembly is only used for guiding pure water, other components cannot be accommodated, and the utilization efficiency of the inner space of the central tube is low.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art.
Therefore, the RO filter element assembly provided by the invention has the advantages that the volume of the composite filter element is smaller, and the occupied space is saved.
The invention also provides a composite filter element with the RO filter element component.
The invention also provides a water treatment device with the composite filter element.
An RO cartridge assembly according to an embodiment of the first aspect of the invention comprises: the filter comprises a central tube and an RO filter membrane, wherein a filter material mounting cavity is defined in the central tube, a pure water through hole is formed in the wall of the central tube, the RO filter membrane is sleeved on the central tube, and the RO filter membrane covers the pure water through hole.
According to the RO filter element assembly provided by the embodiment of the invention, the filter material installation cavity is defined in the central tube, and the filter material can be accommodated in the filter material installation cavity, so that convenience is provided for compounding of various filter elements, the internal space of the RO filter element assembly can be fully utilized, the whole volume of the compound filter element can be reduced, and the filtering effect of the compound filter element can be improved.
According to an RO cartridge assembly of one embodiment of the present invention, the filter mounting cavity has a diameter greater than 30mm.
According to an embodiment of the RO filter assembly of the present invention, the RO filter membrane extends in an axial direction of the central tube.
According to one embodiment of the invention, the central tube comprises: the enclosing plate is formed into a cylinder shape with two open ends, the pure water through hole is formed in the enclosing plate, the RO filter membrane is sleeved on the enclosing plate, the lower end cover is arranged in the enclosing plate and located at the lower part of the enclosing plate, and the lower end cover is sealed the lower end of the enclosing plate is limited to form the filter material mounting cavity.
According to an embodiment of the present invention, a water guide groove communicating with the pure water through hole is formed in an outer peripheral wall of the shroud.
According to an embodiment of the invention, the water guiding groove extends along the circumference of the coaming.
According to an embodiment of the invention, the water guiding groove extends along the axial direction of the coaming.
According to one embodiment of the invention, the RO filter membrane is formed in a sheet-like shape wound around the shroud.
According to one embodiment of the invention, the lower end face of the lower end cover is provided with a jig clamping groove, and the jig clamping groove is suitable for being matched with a jig to drive the central tube to rotate and wind to form the RO filter membrane.
According to one embodiment of the invention, the inner wall of the coaming is provided with a supporting table, and the supporting table protrudes inwards along the radial direction of the coaming.
According to one embodiment of the invention, the coaming, the lower end cover and the support table are integrally formed.
According to a second aspect of the present invention, a composite filter element includes a housing, an RO filter element assembly according to the above embodiment, an inner tube detachably provided in the filter element installation cavity, and a built-in filter element provided in the inner tube.
According to a third aspect of the invention, a water treatment device is provided, comprising a composite filter cartridge according to the above embodiments.
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 foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic structural view of a composite filter cartridge according to an embodiment of the invention;
FIG. 2 is a schematic partial construction of a composite filter cartridge 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 cartridge 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 cartridge in accordance with an embodiment of the present 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 view of the structure 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 center tube according to an embodiment of the present invention;
Fig. 15 is a schematic structural view of a waste water plug according to an embodiment of the present invention.
Reference numerals:
100: a composite filter element;
10: a housing; 11: a cylinder; 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 end; 142: a guide section; 15: a decorative cover; 16: a handle.
20: An RO cartridge assembly; 21: a central tube; 211: coaming plate; 2111: a pure water through hole; 2112: a water guide groove; 212: a lower cover plate; 213: a support table; 22: RO filter membrane; 23: an annular inner cap; 231: a waste water chamber; 232: a waste water port;
30: an inner tube;
40: PAC filter cartridge assembly; 41: PAC framework; 42: PAC filtration; 43: PAC upper end cap; 44: PAC lower end cap;
50: an activated carbon filter element; 51: a first water purifying cavity; 52: a pure water cavity; 521: a water outlet cavity; 522: an original pure water cavity; 53: tap water cavity; 54: a second water purifying cavity;
60: and a water outlet pipe.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should 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", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
An RO cartridge assembly 20 and a composite cartridge 100, water treatment apparatus having the same according to an embodiment of the present invention are described below with reference to FIGS. 1 to 15.
As shown in fig. 1-4, according to one embodiment of the present invention, RO cartridge assembly 20 comprises: a central tube 21 and an RO filter 22.
Specifically, the center tube 21 is formed in a tubular shape with one end open, a filter mounting chamber is defined in the center tube 21, the diameter of the filter mounting chamber is greater than 30mm, the RO filter 22 is fitted over the center tube 21, and the RO filter 22 covers the pure water through hole 2111.
Through setting up filter medium installation cavity in center tube 21, can be at the filter medium installation cavity in assembly of filter medium that is fit for, the filter medium in the filter medium installation cavity cooperates the outer RO filter membrane 22 of center tube 21, can promote the rivers filter effect of RO filter membrane 22 and filter medium.
Wherein, the wall of the central tube 21 is formed with a pure water through hole 2111, the pure water through hole 2111 penetrates through the wall of the central tube 21 along the thickness direction of the wall of the central tube 21, and the water flow filtered by the RO filter 22 flows out through the pure water through hole 2111 on the central tube 21, and the water flow resistance is small.
Therefore, according to the RO filter element assembly 20 of the embodiment of the invention, the filter material installation cavity is defined in the central tube 21, and the filter material can be accommodated in the filter material installation cavity, so that convenience is provided for compounding various filter elements, the internal space of the RO filter element assembly 20 can be fully utilized, the whole volume of the composite filter element 100 can be reduced, and the filtering effect of the composite filter element 100 can be improved.
In this embodiment, the RO filter 22 extends along the axial direction of the center tube 21, and the RO filter 22 extends along the axial direction of the center tube 21, so that the membrane area of the RO filter 22 can be increased, and the filtering capacity and filtering effect of the RO filter 22 can be improved.
As shown in fig. 12 to 14, in the present embodiment, the center tube 21 includes: the enclosing plate 211 and the lower end cover 212, the enclosing plate 211 is formed into a cylinder shape with two open ends, the pure water through holes 2111 are formed in the enclosing plate 211, the RO filter membrane 22 is sleeved on the enclosing plate 211, the lower end cover 212 is arranged in the enclosing plate 211 and is positioned at the lower part of the enclosing plate 211, and the lower end cover 212 seals the lower end opening of the enclosing plate 211 and is matched with the enclosing plate 211 to define a filter material mounting cavity. That is, the center tube 21 is formed in a cylindrical shape with an open upper end and a closed lower end.
In the central tube 21 of the above structure, the lower end of the filter mounting cavity is closed, and when the filter is assembled in the filter mounting cavity, the sealing effect is good, and water flow is prevented from flowing out from the lower end of the central tube 21. And the structure is simple, the assembly is convenient, and the production cost is lower.
As shown in fig. 12, a water guide groove 2112 communicating with the pure water through hole 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 flow filtered by the RO filter membrane 22 flows into the pure water through hole 2111 through the water guide groove 2112, is collected in the filter medium mounting chamber, and is then guided out.
Because RO filter membrane 22 winds around setting up on bounding wall 211, through setting up guiding gutter 2112 on bounding wall 211, can increase the flow efficiency of deriving rivers in the RO filter membrane 22, increase the play water efficiency of RO filter membrane 22, and then can promote the water purification efficiency of RO filter element assembly 20.
As shown in fig. 12, the water guide groove 2112 extends along the circumferential direction of the shroud 211, that is, the water guide groove 2112 is formed in a ring shape extending along the circumferential direction of the shroud 211, and the pure water through hole 2111 is provided in the water guide groove 2112, whereby the length of the water guide groove 2112 can be further increased, the water outlet efficiency of the RO filter membrane 22 can be further improved, the uniformity of the water outlet efficiency of the RO filter membrane 22 in the circumferential direction can be ensured, and the influence of local water outlet blockage on the water purification efficiency of the RO filter membrane 22 can be prevented.
As shown in fig. 12, the water guide grooves 2112 may extend in the axial direction of the shroud 211, and the pure water through holes 2111 may be provided at intervals in the axial direction of the shroud 211, and the water guide grooves 2112 may communicate with the pure water through holes 2111 in sequence.
In some embodiments, the plurality of water channels 2112 is provided, a portion of the water channels 2112 extends along a circumferential direction of the shroud 211, the plurality of water channels 2111 are provided at intervals in an axial direction of the shroud, a portion of the water channels 2112 extends along the axial direction of the shroud 211, the water channels 2112 extending along the axial direction of the shroud 211 are sequentially communicated with the water channels 2111 extending along the circumferential direction of the shroud 211, and the water channels 2111 are formed as a water guiding net arranged on an outer circumferential wall of the shroud 211. The pure water through holes 2111 may be provided at intersections of the water guide grooves 2112 extending in the axial direction of the shroud 211 and the water guide grooves 2112 extending in the circumferential direction of the shroud 211.
As shown in fig. 13, in the present embodiment, the inner wall of the shroud 211 is formed with a support stand 213 protruding inward in the radial direction of the shroud 211, the support stand 213 has an upper surface, and the lower end of the filter medium may be stopped against the upper surface of the support stand 213.
By providing the supporting stand 213 cooperating with the inner tube 30 on the enclosing plate 211, convenience can be provided for assembling the built-in filter material, and the supporting effect of the supporting stand 213 on the filter material can promote the assembling stability of the inner tube 30.
Further, the support stand 213 extends in the circumferential direction of the shroud 211, that is, the support stand 213 is formed in a ring shape extending in the circumferential direction of the shroud 211, the support stand 213 may also be formed in a tubular shape extending in the axial direction of the shroud 211, and the lower end of the support stand 213 abuts against the upper surface of the lower end cap 212 of the center tube 21.
The tubular supporting stand 213 can promote the stress uniformity of the filter media, and prevent the filter media from being damaged or inclined due to uneven local stress in the filter media installation cavity. Wherein, supporting bench 213, bounding wall 211 and bottom end cap 212 integrated into one piece, that is to say, central tube 21 is integrated into one piece, integrated into one piece's central tube 21 can promote the connection stability and the joint strength between supporting bench 213, bounding wall 211 and the bottom end cap 212, and then can promote the functional stability and the reliability of central tube 21, can eliminate the coupling mechanism between supporting bench 213, bounding wall 211 and the bottom end cap 212 moreover, promoted central tube 21 and composite filter core 100's assembly efficiency, integrated into one piece's central tube 21's intensity is big moreover, life is longer.
In this embodiment, the RO filter membrane 22 is formed into a sheet shape wound on the enclosing plate 211, wherein the RO filter membrane 22 is formed into a strip shape with a certain width, the strip-shaped RO filter membrane 22 is wound on the enclosing plate 211, the area of the strip-shaped RO filter membrane 22 influences the filtering effect of the RO filter element assembly 20, and the RO filter membrane 22 is wound on the enclosing plate 211, so that the occupied space is small, and convenience is provided for water to flow through the RO filter membrane 22.
As shown in fig. 14, in the present embodiment, a jig clamping groove is formed on the lower end surface of the lower end cover 212, and the jig clamping groove is adapted to cooperate with a jig to drive the central tube 21 to rotate around to form the RO filter membrane 22. In the process of winding the RO filter membrane 22 around the central tube 21, the central tube 21 is generally prevented from being wound around the RO filter membrane 22 by rotating the central tube 21 on a rotating mechanism, whereby the production efficiency of the RO filter cartridge assembly 20 can be improved and the operation is convenient.
Wherein, the lower surface of bottom end cover 212 is equipped with the tool draw-in groove, and the tool of rotatory center tube 21 can be motor class mechanism, can set up the buckle with the tool draw-in groove adaptation on the motor shaft of motor, buckle and tool draw-in groove cooperation can prevent that the relative dislocation from taking place when tool drive center tube 21 is rotatory, and then can promote the tension when center tube 21 winds RO filter membrane 22, can promote the quality of RO filter membrane 22.
As shown in fig. 1, in the present embodiment, the RO filter cartridge assembly 20 further includes an annular inner cap 23, and a lower surface of the annular inner cap 23 is sealed against an upper end surface of the RO filter membrane 22.
Further, as shown in fig. 9 to 11, an annular groove with an open lower surface is formed at the bottom of the annular inner cover 23, the arc groove extends along the circumferential direction of the RO filter membrane 22, the upper end surface of the RO filter membrane 22 closes the annular groove to define a waste water chamber 231, a waste water port 232 communicating with the waste water outlet 115 is formed in the annular inner cover 23, and a waste water channel communicating the waste water chamber 231 with the waste water port 232 is defined in the annular inner cover 23.
The RO membrane 22 separates the wastewater during filtration, and the wastewater discharge can be guided by providing the wastewater outlet 115, the wastewater chamber 231, and the wastewater channel.
The waste water chamber 231 is defined on the annular inner cover 23, so that waste water can be prevented from being strung into the first water purifying chamber 51, the pure water chamber 52, the tap water chamber 53 and the second water purifying chamber 54, and the quality of filtered water flow can be improved. And the waste water of RO filter element assembly 20 is discharged from the tip of RO filter element assembly 20, is prescribing a limit to waste water chamber 231 on annular inner cup 23, can provide the convenience for waste water entering waste water chamber 231, and simple structure has eliminated the water conservancy diversion passageway between RO filter element assembly 20 and the waste water chamber 231, has simplified the structural design and the water route design of composite filter element 100.
The composite filter cartridge 100 according to the second aspect of the present invention includes the housing 10, the RO filter cartridge assembly 20 described in the above embodiments, the inner tube 30, and the built-in filter material, the RO filter cartridge assembly 20 being provided in the housing 10, the inner tube 30 being detachably provided in the filter material installation chamber, the built-in filter material being provided in the inner tube 30.
Specifically, a filter cavity is defined in the shell 10, a central tube 21 is arranged in the filter cavity, an RO filter membrane 22 is wound on the central tube 21, a filter material installation cavity is defined in the central tube 21, an inner tube 30 is arranged in the filter material installation cavity, a built-in filter material is arranged in the inner tube 30, the built-in filter material can be a PAC filter element assembly 40,
Wherein, inner tube 30 will be can become inner chamber and outer chamber with filter media installation cavity interval, and central tube 21 and RO filter membrane 22 constitute RO filter core subassembly 20, and RO filter core subassembly 20 is established in the outer chamber, and PAC filter core subassembly 40 is established in the inner chamber, because one side of built-in filter media installation cavity is open, rivers not only can pass PAC filter core subassembly 40 thereby the filtration of PAC filter core subassembly 40, can also get into the inner chamber through the open mouth of built-in filter media installation cavity to the filtration effect of PAC filter core subassembly 40.
Therefore, according to the composite filter element 100 of the embodiment of the invention, the PAC filter element assembly 40 is arranged in the inner pipe 30, and the inner pipe 30 is arranged in the RO filter element assembly 20, that is, the RO filter element assembly 20, the inner pipe 30 and the PAC filter element assembly 40 are nested in sequence, so that the space in the RO filter element assembly 20 can be fully utilized, and the RO filter element assembly 20 and the PAC filter element assembly 40 are spaced apart and compounded in the shell 10 by utilizing the inner pipe 30, so that the filtering effect of the composite filter element 100 is improved, the space originally containing one filter element can contain two filter pipes, and the occupied space of the RO filter element assembly 20 and the PAC filter element assembly 40 is saved.
As shown in fig. 1 and 3, according to the composite filter cartridge 100 of one embodiment of the present invention, a tap water inlet 111, a clean water outlet 112, a clean water inlet 113 and a clean water outlet 114 are provided on a housing 10, wherein the tap water inlet 111 and the clean water outlet 112 communicate with a built-in filter installation cavity.
The outer wall of the RO filter 22 and the inner wall of the housing 10 define a first water purifying chamber 51 communicating with a water purifying inlet 113, the inner wall of the central tube 21 and the outer wall of the inner tube 30 define a pure water chamber 52 communicating with a pure water outlet 114, the inner wall of the inner tube 30 and the outer wall of the PAC filter assembly 40 define a tap water chamber 53 communicating with a tap water inlet 111, and the PAC filter assembly 40 defines a second water purifying chamber 54 communicating with a water purifying outlet 112.
The water flow enters the tap water cavity 53 through the tap water inlet 111, the water flow in the tap water cavity 53 enters the second water purifying cavity 54 through the filtering action of the PAC filter element assembly 40 and flows out through the water purifying outlet 112, the discharged water enters the first water purifying cavity 51 through the water purifying inlet 113 through the action of the booster pump, the water flow in the first water purifying cavity 51 enters the pure water cavity 52 through the filtering action of the RO filter element assembly 20, and the water flow in the pure water cavity 52 flows out through the pure water outlet 114 for drinking by a user.
Wherein the gap between the inner wall of the housing 10 and the outer wall of the RO cartridge assembly 20 is 1.2mm, the gap between the inner wall of the RO cartridge assembly 20 and the outer wall of the inner tube 30 is 1.2mm, and the gap between the inner wall of the inner tube 30 and the outer wall of the PAC cartridge assembly 40 is 1.2mm. Therefore, normal 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, the first water purifying cavity 51, the second water purifying cavity 54, the tap water cavity 53 and the pure water cavity 52 are defined by the inner wall of the shell 10, the inner wall of the RO filter element assembly 20, the outer wall of the RO filter element assembly 20, the inner wall of the inner tube 30, the outer wall of the inner tube 30 and the outer wall of the PAC filter element assembly 40 in a matched manner, so that the structure is simple, the implementation is easy, the structural design of the composite filter element 100 is facilitated to be simplified, and the production cost of the composite filter element 100 can be reduced.
As shown, in the present embodiment, the built-in filter material is a PAC filter cartridge assembly 40, and as shown in fig. 3, the PAC filter cartridge assembly 40 includes: the PAC framework 41 and the PAC filter membrane 42, the PAC framework 41 is positioned in the inner pipe 30 and extends along the axial direction of the inner pipe 30, the PAC framework 41 is sleeved on the water outlet pipe 60, the PAC filter membrane 42 is sleeved on the PAC framework 41 and extends along the axial direction of the PAC framework 41, the PAC filter membrane 42 is a tubular filter element made of polyaluminum chloride material, and the thickness of the PAC filter membrane 42 is greater than 10mm.
The PAC framework 41 defines a second water purifying cavity 54, the outer wall of the PAC filter 42 and the inner wall of the inner tube 30 define a tap water cavity 53, tap water enters the tap water cavity 53 through a tap water inlet 111, and water flows through the PAC filter 42 and flows out of the inner wall of the PAC framework 41 into the second water purifying cavity 54 through the filtering action of the PAC filter 42, and then flows out of the purified water outlet 112.
Because the filtering effect of the PAC filter 42 is related to the thickness of the water flowing through the PAC filter 42, the PAC filter 42 and the PAC framework 41 form a second filter element and are arranged in the inner tube 30, so that the diameter of the second filter element is reduced, the occupied space of the second filter element can be reduced, and the volume and production materials of the PAC filter 42 can be reduced, which is beneficial to reducing the cost.
As shown in fig. 3, in this embodiment, the second filter cartridge further includes: the PAC upper end cover 43 and the PAC lower end cover 44, the PAC upper end cover 43 is sleeved at the upper end of the PAC framework 41, the lower surface of the PAC upper end cover 43 is in sealing contact with the upper end face of the PAC filter membrane 42, the PAC lower end cover 44 is sleeved at the lower end of the PAC framework 41, and the upper surface of the PAC lower end cover 44 is in sealing contact with the lower end face of the PAC filter membrane 42. And outlet pipe 60 runs through PAC upper end cover 43 and PAC lower end cover 44, the inner peripheral edge of PAC lower end cover 44 is in sealing fit with the outer peripheral wall of outlet pipe 60, and the outer peripheral edge of PAC lower end cover 44 is in sealing fit with the inner peripheral wall of inner pipe 30.
By arranging the PAC upper end cover 43 and the PAC lower end cover 44, tightness of the upper end and the lower end of the PAC filter membrane 42 can be improved, water flow in the PAC filter membrane 42 is prevented from flowing out of the upper end or the lower end of the PAC filter membrane 42, water flow can be prevented from entering the water outlet cavity 521 along the outer wall of the water outlet pipe 60, and tightness of the tap water cavity 53 can be improved.
As shown in fig. 4, in this embodiment, the outer peripheral edge of the PAC upper end cover 43 is formed with a turned-down upper flange, an inner wall of the upper flange abuts against the outer peripheral wall of the PAC filter membrane 42, and a tap water channel is defined between an outer wall of the upper flange and an inner wall of the inner tube 30, and water flows from the tap water inlet 111 through the tap water channel into the tap water chamber 53.
The PAC lower end cap 44 is formed with a turned-up lower flange along its outer periphery, the inner wall of the lower flange abuts against the outer peripheral wall of the PAC filter membrane 42, and the outer wall of the lower flange abuts against the inner peripheral wall of the inner tube 30 in a sealing manner.
Thereby, the performance of the second filter element can be improved, and the tightness and reliability of the tap water chamber 53 can be improved, preventing the leakage of water flow.
Further, the PAC framework 41 is tubular, and a plurality of holes penetrating the wall of the PAC framework 41 along the thickness direction of the wall of the PAC framework 41 are formed on the wall of the PAC framework 41. By arranging the holes on the wall of the PAC framework 41, 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.
According to one embodiment of the present invention, further comprising: the active carbon filter element 50 and the water outlet pipe 60, the active carbon filter element 50 is arranged in the central pipe 21 and is in sealing contact between the lower end of the inner pipe 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 PAC framework 41 is tubular, the water outlet pipe 60 penetrates through the PAC framework 41 along the axial direction of the PAC framework 41, that is, the PAC framework 41 is sleeved on the water outlet pipe 60, and a second water purifying cavity 54 is defined between the outer wall of the water outlet pipe 60 and the inner wall of the PAC framework 41. One end (lower end as viewed in fig. 3) of the water outlet pipe 60 communicates with the water outlet chamber 521, and the other end (upper end as viewed in fig. 3) of the water outlet pipe 60 communicates with the pure water outlet 114.
That is, pure water filtered by the RO filter element assembly 20 enters the raw pure water chamber 522, and water in the raw 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, thereby making it possible to further clarify impurities or bad odors in water. The water filtered by the RO filter element assembly 20 is slightly acidic, has poor taste, is not suitable for direct drinking by users, and can further improve the quality of pure water and the taste of drinking water through the filtering effect of the carbon filter element.
In this 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, and the inner tube 30 is disposed at the top of the activated carbon filter element 50. The active carbon filter element 50 and the inner tube 30 which are axially arranged along the RO filter element assembly 20 can fully utilize the space of the built-in filter material mounting cavity, be favorable for reducing the inner diameter of the built-in filter material mounting cavity, further reduce the diameter and the volume of the RO filter element assembly 20, and the active carbon filter element 50 and the inner tube 30 with the structure have simple structure and are convenient to assemble.
The pure water outlet 114 is positioned above the inner pipe 30, the water outlet cavity 521 is positioned in the activated carbon filter element 50 and below the inner pipe 30, and the water outlet pipe 60 is arranged to facilitate the water flow in the water outlet cavity 521 to flow out of the pure water outlet 114, and the water outlet pipe 60 has a simple structure and is easy to realize.
Moreover, the activated carbon filter element 50 is arranged in the pure water cavity 52, so that the degree of compositing 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 case that the activated carbon filter element 50 is independently arranged, 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.
In the present embodiment, the central axis of the central tube 21, the central axis of the PAC filter 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, the water outlet pipe 60, the pac filter element assembly 40, the inner pipe 30, the RO filter element assembly 20 and the housing 10 are nested in sequence, so that the occupied space of the water outlet pipe 60, the second filter element, the inner pipe 30 and the RO filter element assembly 20 can be reduced, the utilization efficiency of the internal space of the composite filter element 100 is improved, the volume of the housing 10 can be reduced, and convenience is provided for using and assembling the composite filter element 100.
As shown in fig. 6, according to an embodiment of the present invention, the housing 10 comprises a cylinder 11 and a lower cover 12, the bottom of the cylinder 11 is opened, the RO filter cartridge assembly 20 is disposed in the cylinder 11, the tap water inlet 111, the purified water outlet 112, the purified water inlet 113 and the purified water outlet 114 are all disposed at the top of the cylinder 11, the lower cover 12 is connected with the cylinder 11 to close the opening of the cylinder 11, the upper surface of the lower cover 12 is in sealing abutment with the lower end surface of the RO filter cartridge assembly 20, the annular inner cover 23 is disposed at the top of the inner cavity of the cylinder 11, and the lower surface of the annular inner cover 23 is in abutment with the upper end surface of the RO filter membrane 22.
The shell 10 is further provided with four adapters 13, the four adapters 13 are inserted into the tap water inlet 111, the purified water outlet 112, the purified water inlet 113 and the purified water outlet 114 in a one-to-one correspondence manner, convenience is provided for assembling the waterway of the composite filter element 100 by arranging the adapters 13, and the tightness of the waterway is improved.
The waste water outlet 115 is provided with a waste water plug 14, the waste water plug 114 is inserted in the waste water outlet 115, the waste water plug 14 generates a certain resistance to water in the waste water cavity 231, when the water pressure in the waste water cavity 231 reaches a preset pressure value, the waste water plug 14 is conducted, and waste water is discharged from the waste water cavity 231.
In the present embodiment, the waste water plug 14 includes: a sleeve inserted in the waste water outlet 115 and connected to the housing, and a plurality of capillaries provided on the inner wall of the sleeve and extending radially inward of the sleeve.
The capillary tubes are arranged along the circumferential direction of the sleeve to form a capillary group, and the capillary groups are filled in the sleeve along the axial direction of the sleeve. The waste water plug with the structure has the advantages of simple structure and easy manufacture, and can effectively improve the water purifying effect of the RO filter element.
As shown in fig. 15, in the present embodiment, the sleeve includes: the device comprises a plug-in section 141 and a guide section 142, wherein one end of the plug-in section 141 is plugged in the waste water outlet 115, the plug-in section 141 extends along the axial direction of the waste water outlet 115, and the guide section 142 is communicated with the other end of the plug-in section 141. Capillary tubes are provided in both the insertion section 141 and the guide section 142, or 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 chamber 231, and grafting section 141 is pegged graft in waste water outlet 115 moreover, and stability and seal are better, and direction section 142 is suitable for intercommunication waste water outlet 1115 and waste water drain pipe, and wherein, direction section 142 perpendicular to grafting section 141 makes things convenient for waste water drain pipe to connect direction section 142, can provide convenience for the waste water discharge.
Wherein, the shell 10 is further provided with a decorative cover 15, the decorative cover 15 is covered on the top of the cylinder 11, and the tap water inlet 111, the purified water outlet 112, the purified water inlet 113, the purified water outlet 114 and the waste water outlet 115 are covered in the decorative cover 15, thereby improving the appearance uniformity of the composite filter element 100.
In this embodiment, the top of barrel 11 still is equipped with handle 16, is equipped with first tie point and the second tie point that the interval was arranged on the lateral wall of barrel 11, and first tie point is connected to handle 16's one end, and the second tie point is connected to the other end, and when demolishing or assembling compound filter core 100, the user gets through promoting 16 and puts compound filter core 100, convenient operation, and stability is strong, and handle 16 simple structure moreover realizes easily.
As shown in fig. 5, in the assembling process of the composite filter element 100, 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 mounting cavity, then the inner tube 30 is assembled in the built-in filter material mounting cavity, the lower end of the inner tube 30 is stopped against the activated carbon filter element 50, then the water outlet tube 60 is inserted into the inner tube 30, then the PAC filter element assembly 40 is sleeved on the water outlet tube 60, finally the annular inner cap 23 is covered on the central tube 21, and the water outlet tube 60 and the PAC annular upper end cover extend out from the middle part of the annular inner cap 23. Then the RO filter element assembly 20 is inserted in the cylinder 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 cavity of the cylinder 11, the first water channel is communicated with the pure water outlet 114 and the water outlet pipe 60, one end of the second water channel is communicated with the tap water inlet 111, and the other end is communicated with a channel between the outer peripheral wall of the PAC annular upper end cover 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 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 11, and the fifth water channel is communicated with the waste water outlet 115 and the waste water outlet 232.
The water treatment apparatus according to the embodiment of the third aspect of the present invention includes the composite filter element 100, the booster pump, and the tank described in the above embodiments.
Specifically, the tank body is provided with a water supply device, a water outlet and a water outlet, the composite filter element 100 and a booster pump are arranged in the tank 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 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 waste water outlet 115 and is used for discharging waste water.
According to the water treatment device of the third aspect of the invention, the water treatment device comprises the composite filter element 100 described in the embodiment, and by adopting the composite filter element 100 in the embodiment, the volume of the water treatment device can be reduced, the occupied space can be saved, the water outlet quality can be improved, and the convenience is provided for users.
Other constructions and operations of the water treatment apparatus according to the 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 of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (11)
1. A composite filter cartridge, comprising:
A housing;
an RO cartridge assembly disposed within the housing; the RO filter core component comprises an RO filter membrane and a central tube:
The filter material installation cavity is defined in the central tube, a pure water through hole is formed in the wall of the central tube, the central tube comprises a coaming and a lower end cover, the coaming is formed into a cylinder shape with two open ends, the pure water through hole is formed in the coaming, and the RO filter membrane is sleeved on the coaming; the lower end cover is arranged in the coaming and is positioned at the lower part of the coaming, and the lower end cover seals the lower end of the coaming to define the filter material installation cavity;
the RO filter membrane is sleeved on the central tube, and covers the pure water through hole;
The inner tube is detachably arranged in the filter material mounting cavity;
the water outlet cavity is positioned below the inner pipe;
the pure water outlet is positioned above the inner pipe;
one end of the water outlet pipe is communicated with the water outlet cavity, and the other end of the water outlet pipe is communicated with the pure water outlet;
The built-in filter media is established in the inner tube, the built-in filter media is PAC filter core subassembly, PAC filter core subassembly includes:
the PAC framework is positioned in the inner pipe and extends along the axial direction of the inner pipe, and is sleeved on the water outlet pipe,
The PAC filter membrane is sleeved on the PAC framework and extends along the axial direction of the PAC framework.
2. The composite filter cartridge of claim 1, wherein the filter mounting cavity has a diameter greater than 30mm.
3. The composite filter element of claim 1, wherein the RO filter membrane extends axially of the central tube.
4. The composite filter element according to claim 1, wherein a water guide groove communicating with the pure water through hole is formed in an outer peripheral wall of the shroud.
5. The composite filter element of claim 4, wherein the water guide channel extends circumferentially of the shroud.
6. The composite filter element of claim 4, wherein the water guide channel extends axially of the shroud.
7. The composite filter element of claim 1, wherein the RO filter membrane is formed in a sheet-like shape wrapped around the shroud.
8. The composite filter element of claim 1, wherein a jig clamping groove is formed on the lower end face of the lower end cover, and the jig clamping groove is suitable for being matched with a jig to drive the central tube to rotate and wind to form the RO filter membrane.
9. The composite filter element of claim 1, wherein a support ledge is provided on an inner wall of the shroud, the support ledge protruding radially inward of the shroud.
10. The composite filter element of claim 9, wherein the shroud, the lower end cap, and the support stand are integrally formed.
11. A water treatment device comprising a composite filter cartridge according to any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811291602.1A CN111115757B (en) | 2018-10-31 | 2018-10-31 | RO filter element assembly, composite filter element with RO filter element assembly and water treatment device |
| PCT/CN2019/114558 WO2020088560A1 (en) | 2018-10-31 | 2019-10-31 | Ro filter element assembly, composite filter element having same, and water treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811291602.1A CN111115757B (en) | 2018-10-31 | 2018-10-31 | RO filter element assembly, composite filter element with RO filter element assembly and water treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111115757A CN111115757A (en) | 2020-05-08 |
| CN111115757B true CN111115757B (en) | 2024-08-06 |
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| CN201811291602.1A Active CN111115757B (en) | 2018-10-31 | 2018-10-31 | RO filter element assembly, composite filter element with RO filter element assembly and water treatment device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114159881B (en) * | 2021-06-03 | 2023-07-04 | 佛山市美的清湖净水设备有限公司 | Front filter element of composite filter element and composite filter element with front filter element |
| CN114159880B (en) * | 2021-06-03 | 2023-07-21 | 佛山市美的清湖净水设备有限公司 | Pre-filter element of composite filter element and composite filter element with same |
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