CN111003852A - Water purifier filter element - Google Patents
Water purifier filter element Download PDFInfo
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- CN111003852A CN111003852A CN202010104173.3A CN202010104173A CN111003852A CN 111003852 A CN111003852 A CN 111003852A CN 202010104173 A CN202010104173 A CN 202010104173A CN 111003852 A CN111003852 A CN 111003852A
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- purification unit
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 321
- 238000000746 purification Methods 0.000 claims abstract description 157
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 239000008213 purified water Substances 0.000 claims abstract description 5
- 230000003044 adaptive effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 149
- 230000003139 buffering effect Effects 0.000 claims description 9
- 239000003344 environmental pollutant Substances 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 231100000719 pollutant Toxicity 0.000 claims description 9
- 229910001385 heavy metal Inorganic materials 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 6
- -1 nano silver ions Chemical class 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000004659 sterilization and disinfection Methods 0.000 claims description 5
- 238000003911 water pollution Methods 0.000 claims description 5
- 230000001954 sterilising effect Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052785 arsenic Inorganic materials 0.000 claims description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002923 metal particle Substances 0.000 claims description 3
- 238000001471 micro-filtration Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims 2
- 238000002360 preparation method Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 15
- 238000005374 membrane filtration Methods 0.000 abstract description 4
- 239000003403 water pollutant Substances 0.000 abstract description 3
- 230000006978 adaptation Effects 0.000 description 22
- 125000004122 cyclic group Chemical group 0.000 description 9
- 230000007547 defect Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 235000013619 trace mineral Nutrition 0.000 description 4
- 239000011573 trace mineral Substances 0.000 description 4
- 235000020188 drinking water Nutrition 0.000 description 3
- 239000003651 drinking water Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 241000700605 Viruses Species 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
The invention discloses a filter element of a water purifier, which comprises a filter element cover, a filter element shell, a water purification unit A, a water purification unit B, a water purification unit C, a water inlet pipe and a water outlet pipe. The main bodies of the filter element cover and the filter element shell are hollow cylinders, a water inlet pipe is arranged on the side surface of the filter element cover, and a water outlet pipe is arranged at the center of the top of the filter element cover. The filter element cover and the filter element shell are concentrically arranged, and the open end of the filter element cover is matched with the open end of the filter element shell in a sealing mode to form a filter element bearing cavity. The water purification unit A, the water purification unit B and the water purification unit C are arranged concentrically with the filter element shell; are sequentially arranged in the filter element bearing cavity in a matching way to form a grading water distribution channel and a grading purification system. The filter element of the water purifier is a composite filter element which comprises at least two stages of purification units and corresponding adaptive structures. The filter element of the water purifier can be configured with purification media filter layers in different types and states, and the media purification technology replaces the membrane purification technology; the product pain point of the membrane filtration technology is solved; the purification unit which takes media as a purification main body and has corresponding functions and structures can be matched according to different raw water pollutants, so that water quality is decomposed and purified step by step in a directional manner, natural and healthy purified water quality is obtained, and the device is compact in overall structure, energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to a composite filter element of a water purifier adopting a graded directional purification technology.
Background
Generally, water purifiers are used for purifying drinking water for home, business and outdoor use, and filter raw water to remove contaminants.
In detail, the water purifier is connected to a water supply system to remove various solid impurities, floating materials, bacteria, microorganisms, organic matters, pesticide residues, environmental hormones, and heavy metal harmful components contained in tap water. As mentioned above, in order to obtain safe water quality, the structure of the water purifier is designed to include multiple independent filter core structures with different purification functions, especially the limitation of membrane technology; the water purifier is enlarged in volume and complex in structure, and is released and popularized in various product forms; however, when the water purifier is used in different households and work occasions, various installation scenes are faced. In recent years, there has been a trend to develop water purifiers small enough in size to be installed in various application scenes.
The existing filtering device is generally provided with one or more filter elements in a filtering shell, and the water purification is realized by filtering the filter elements. In the existing filter element, fluid generally enters a cavity from the upper part or the lower part of the filter element, passes through 1-2 layers of filter materials and then flows out from a connector on the same side or different sides. The existing household water purifying equipment is small in installation position and difficult to install water purifying equipment with a large volume.
The current filter element has the following defects: the current popular technology is reverse osmosis membrane technology, and most of filter elements of the water purifier are single-function membrane filtration, so that various pollutants in water can not be effectively removed, and bacteria and microorganisms can not be killed.
Reverse osmosis membrane technology, which essentially blocks and isolates contaminants; simultaneously, beneficial trace elements and mineral substances in water are blocked; the blocked bacteria, viruses, microorganisms, mineral substances and organic matters are continuously accumulated on the raw water side of the membrane; filter element blockage and service life aggravation shortening; the membrane technology has short filter element life, generally between 2500-; the problem of purification of harsh raw water is not commercially solved; the filtering function can be realized only by driving the water pump to reach effective working pressure, the energy consumption structure is complex, and the cost is increased to form a link and an unreliable link of the product.
The water inlet and outlet of the existing filter element are mostly in the same side or different sides, which can not meet the requirement of integral assembly of products; the existing filter element is mostly 1 to 2-level filter material, the function is limited, the efficiency is low, the volume is huge, the water quality is unhealthy, the service life of the filter element is limited, the filter element is frequently replaced, and the multi-level high-efficiency filter material cannot be well integrated; the consumption upgrading requirement of people on healthy drinking water cannot be met.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a more scientific and integrated filter element of a water purifier, can configure purification medium filter layers in different types and states in the integrated filter element, weakens the use defect of a membrane technology, and solves the product pain point of the filter element of the membrane filtration technology; the purification units with corresponding functions and structures can be matched according to different raw water pollutants, so that water quality is decomposed and purified step by step in a directional manner, and the purification effect of natural and healthy water quality is obtained, and the device is compact in overall structure, energy-saving and environment-friendly; not only meets the market demand of healthy water, but also can meet the scene demand of the safe water market with extremely bad raw water quality.
In order to achieve the above object, the present invention provides a solution for a filter element of a water purifying apparatus, the filter element including a filter element of a water purifier, comprising: the filter element comprises a filter element cover, a filter element shell, a water purification unit A, a water purification unit B, a water purification unit C, a water inlet pipe and a water outlet pipe; the main body of the filter element cover is a hollow cylinder, a water inlet pipe is arranged on the side surface of the filter element cover, and a water outlet pipe is arranged at the center of the top of the filter element cover; the filter element shell is a hollow cylinder with one end sealed and the other end opened; the filter element cover and the filter element shell are arranged concentrically, and the open end of the filter element cover is matched with the open end of the filter element shell in a sealing mode to form a filter element bearing cavity.
Furthermore, the water purification unit A, the water purification unit B and the water purification unit C are arranged concentrically with the filter element shell; sequentially passes through the water outlet pipe concentrically arranged with the filter element shell and is adapted to be installed in the filter element bearing cavity to form a grading water distribution channel and a grading purification system.
Furthermore, the filter element of the water purifier comprises at least two stages of purification units and corresponding adaptive structures, so that the formed composite filter element has radial flow and also has the axial flow multistage purification units connected in series; a water inlet cavity is arranged at the water inlet end of each stage of purification unit, a water discharge cavity is arranged at the water outlet end of each stage of water purification unit, and the water discharge cavity of the previous stage of water purification unit is the water inlet cavity of the next adjacent stage of water purification unit; the claims and descriptions are presented with respect to the three-stage purification unit as an example.
Furthermore, the water purification unit A comprises a first-stage filter material, a support I and a support II, the top of the support I is concentrically and hermetically matched with the top of the filter element cover, the first-stage filter material is a degerming carbon rod with the filter diameter not more than 10 microns, the first-stage filter material is arranged in an annular cylinder structure, the top of the annular cylinder is hermetically matched with the end of the support I, and the bottom of the annular cylinder is hermetically matched with the end of the support II and then forms a hermetic fit with the inner wall of the filter element shell; an outer cylindrical surface of the annular cylinder of the first-stage filter material and the inner wall of the filter element bearing cavity form a water inlet cavity I which is communicated with the water inlet pipe; the inner cylindrical surface of the annular cylinder and the outer cylindrical surface of the water outlet pipe form a water drainage cavity I; an annular water distribution hole which is not less than 0.5 mm is reserved between the inner hole of the bracket II and the outer cylindrical surface of the water outlet pipe and is communicated with the water drainage cavity I.
Further, the water purification unit B comprises a second-stage filter material, a third-stage filter material, a fourth-stage filter material, a support III, a support IV, a support V and a support VI; the second stage filter material, the third stage filter material and the fourth stage filter material are connected in series and adapted to form an axial water flow purification unit, and are adapted to more stages of pollutant removal filter materials in series according to different original water pollution sources; two end faces of each stage of series filter material are sequentially provided with a support III, a support IV, a support V and a support VI for supporting and isolating, and the sections of all the supports III, IV, V and VI are permeable isolating filter screens.
Furthermore, the second-stage filter material is a medium for removing heavy metals and turbidity particles, and is of an annular cylinder structure, the outer cylindrical surface of the annular cylinder is in sealing fit with the inner wall of the filter element shell, the inner cylindrical surface of the annular cylinder is in sealing fit with the outer cylindrical surface of the water outlet pipe, a support is arranged at the top of the annular cylinder, the outer side of the end surface of the top of the annular cylinder is in sealing fit with the support through the support to form a water inlet cavity II, and the water inlet cavity II is communicated; the outer side of the end face of the bottom of the second-stage filter material is matched with the support IV in a sealing mode.
Further, the tertiary filter media is for killing the bacterium and getting rid of turbidity granule medium, and its structure is cyclic annular cylinder structure, and the sealed adaptation of cyclic annular cylinder outer cylinder and filter core casing inner wall, the sealed adaptation of the outer cylinder of cyclic annular cylinder inner cylinder and outlet pipe, the sealed adaptation of top end face outside and support IV, the sealed adaptation of bottom end face outside and support V.
Further, the fourth grade filter media is for removing heavy metal particle media such as plumbous, arsenic, and its structure is cyclic annular cylinder structure, the sealed adaptation of cyclic annular cylinder outer cylinder and filter core shells inner wall, the sealed adaptation of the outer cylinder of cyclic annular cylinder inner cylinder and outlet pipe, the sealed adaptation of top end face outside and support V, the sealed adaptation of bottom end face outside and support VI.
Further, the water purification unit C comprises a fifth-stage filter material, a sixth-stage filter material, a bracket VII, a bracket VIII and an isolation net, wherein the fifth-stage filter material is a microfiltration membrane material for removing turbidity pollutants and is of an annular cylinder structure; the fifth-stage filter material is concentric with the filter element shell, the fifth-stage filter material is concentric with the bracket VII, and the upper end surface of the fifth-stage filter material is matched with the bracket VII in a sealing way; the bracket VII and the water outlet pipe are concentrically arranged, butted, sealed and matched; the upper end face of the bracket VII supports the bracket VI and forms a drainage cavity II with a height difference of not less than 3 mm with the lower end face of the bracket VI; the fifth-stage filter material is concentrically arranged with the bracket VIII, and the lower end surface of the fifth-stage filter material is in sealing fit with the bracket VIII; a water inlet cavity III is formed between the outer cylindrical surface of the annular cylinder of the fifth-stage filter material and the inner wall of the filter element shell and is communicated with the drainage cavity II; the bracket VIII is of a hollow cylindrical T-shaped structure, the bottom of the bracket is closed, and the bracket is supported at the bottom of the filter element shell; an annular drainage cavity III is formed between the hollow outer cylindrical surface of the bracket VIII and the inner cavity of the fifth-stage filter material; the sixth-stage filter material is a charge balance sterilization ceramic particle sphere implanted with nano silver ions and nano aluminum ions, the sixth-stage filter material is loosely filled in a hollow cylindrical cavity of the bracket VIII, and an isolation net is arranged at the through connection part of the sixth-stage filter material and the water outlet pipe.
Furthermore, at least one drain hole with the diameter not less than 1 mm is arranged at the position, close to the bottom, of the cylindrical hollow cylinder of the bracket VIII and communicated with the drain cavity III.
Further, the water purification flow of the filter element of the water purifier is as follows: raw water enters the water inlet cavity I through the water inlet pipe; the water enters the water discharging cavity I after passing through the water purifying unit A in the radial direction and is purified, and then enters the water inlet cavity II for buffering; after further passing through a second-stage filter material, a third-stage filter material and a fourth-stage filter material which are connected in series in a multi-stage mode in the water purification unit B, the water enters the drainage cavity II after being purified in a grading mode, and enters the water inlet cavity III for buffering; after further passing through the fifth-stage filter material of the water purification unit C in the radial direction for purification, the purified water enters the drainage cavity III for buffering; and further enters a sixth-stage filter material through a water discharge hole to be purified, homogenized and sterilized, and then passes through the separation net to enter a water outlet pipe to finish the purification process.
Further, the manufacturing step of the filter element of the water purifier comprises the following steps: a process of forming the water purification unit A, the water purification unit B and the water purification unit C into components; and a second step: and assembling and adapting the water purification unit A, the water purification unit B, the water purification unit C component, the water outlet pipe and related parts in the filter element bearing cavity.
The invention has the beneficial effects that: the invention provides a more scientific water purification principle, method and process and a filter element manufacturing process, can be configured with purification media filter layers in different types and states, can be matched with purification filter materials and water purification units with corresponding functions and structures according to different raw water pollutants, realizes gradual water quality and directional decomposition and purification, thereby obtaining the purification effect of natural and healthy water quality, and has compact integral structure, energy conservation and environmental protection; not only meets the market demand of healthy water, but also can meet the scene demand of the safe water market with extremely bad raw water quality. The water purification method of the invention weakens the use defects of the membrane technology and solves the product pain points of the filter element of the membrane filtration technology; in particular, the service life of the filter element is prolonged by tens of times, and the trouble and commercial pain points of frequent replacement of the filter element are reduced; the same water quality and the same water purification capacity are obtained, and the structural sizes of the filter element and the water purifier are greatly reduced; the manufacturing cost and the use cost of unit water purification amount are greatly reduced; the fatal defect that the membrane technology cannot purify the severe raw water is overcome; the directional grading purification, sterilization and disinfection are integrated, trace elements and mineral substances in water are retained during purification, and natural healthy drinking water is obtained; the membrane technology can not overcome the problems of accelerated blockage and secondary pollution damage caused by microorganism breeding; the long-life online use of the whole-house water purification is really realized; the filter core waste disposal design not only does not cause damage to the environment, but also can purify the environmental water quality and sterilize and disinfect in the nature.
Drawings
FIG. 1 is a schematic structural diagram of a filter element of a water purifier according to the present invention.
Wherein: 1. a filter element cover; 2. a filter element housing; 001. a water purification unit A; 002. a water purification unit B; 003. a water purification unit C; 31. a first stage filter material; 32. a second stage filter material; 33. a third stage filter material; 34. a fourth stage filter material; 35. a fifth stage filter material; 36. a sixth stage filter material; 41. a bracket I; 42. a bracket II; 43. a support III; 44. a support IV; 45. a support V; 46. a support VI; 47. a stent VII; 48. a scaffold VIII; 49. an isolation net; 5. a water inlet pipe; 6. a water outlet pipe; 10. a cartridge carrying cavity; 11. a water inlet cavity I; 12. a drainage cavity I; 13. a water inlet cavity II; 14. a water discharge cavity II; 15. a water inlet cavity III; 16. a drainage cavity III; 17. and (4) draining the water.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more clearly understand the advantages and features of the present invention, and to clearly and clearly define the scope of the present invention.
Referring to fig. 1, a schematic structural diagram of an embodiment of a filter element of a water purifier according to the present invention is shown. The invention relates to a filter element of a water purifier. The method comprises the following steps: the filter element comprises a filter element cover (1), a filter element shell (2), a water purification unit A (001), a water purification unit B (002), a water purification unit C (003), a water inlet pipe (5) and a water outlet pipe (6).
The main body of the filter element cover (1) is a hollow cylinder, a water inlet pipe (5) is arranged on the side surface of the filter element cover (1), and a water outlet pipe (6) is arranged at the center position of the top of the filter element cover (1); the filter element shell (2) is a hollow cylinder with one end sealed and the other end opened; filter core lid (1) and filter core casing (2) set up with one heart, and the open end of filter core lid (1) and the sealed adaptation of open end of filter core casing (2) form filter core bearing chamber (10).
The water purification unit A (001), the water purification unit B (002) and the water purification unit C (003) are arranged concentrically with the filter element shell (2); sequentially penetrates through a water outlet pipe (6) concentrically arranged with the filter element shell (2) and is installed in the filter element bearing cavity (10) in a matching way to form a grading water distribution channel and a grading purification system; the filter element of the water purifier comprises at least two stages of purification units and corresponding adaptive structures, and forms a composite filter element which has radial flow and also has the axial flow multistage purification units connected in series; a water inlet cavity is arranged at the water inlet end of each stage of purification unit, a water discharge cavity is arranged at the water outlet end of each stage of water purification unit, and the water discharge cavity of the previous stage of water purification unit is the water inlet cavity of the next adjacent stage of water purification unit; the invention has been described and illustrated with reference to a three-stage purification unit as an example.
The water purification unit A (001) comprises a first-stage filter material (31), a support I (41) and a support II (42), the top of the support I (41) is concentrically and hermetically matched with the top of the filter element cover (1), the first-stage filter material (31) is a degerming carbon rod with the filter diameter not larger than 10 micrometers, an annular cylinder structure is arranged, the top of the annular cylinder is hermetically matched with the end of the support I (41), and the bottom of the annular cylinder is hermetically matched with the end of the support II (42) and then forms a sealed fit with the inner wall of the filter element shell (2); an outer cylindrical surface of the annular cylinder of the first-stage filter material (31) and the inner wall of the filter element bearing cavity (10) form a water inlet cavity I (11) and are communicated with the water inlet pipe (5); the inner cylindrical surface of the annular cylinder and the outer cylindrical surface of the water outlet pipe (6) form a drainage cavity I (12); an annular water distribution hole which is not less than 0.5 mm is reserved between the inner hole of the bracket II (42) and the outer cylindrical surface of the water outlet pipe (6) and is communicated with the water drainage cavity I (12).
The water purification unit B (002) comprises a second stage filter material (32), a third stage filter material (33), a fourth stage filter material (34), a bracket III (43), a bracket IV (44), a bracket V (45) and a bracket VI (46); the device is characterized in that the second stage filter material (32), the third stage filter material (33) and the fourth stage filter material (34) are connected in series and adapted to form an axial water flow purification unit, and are connected in series and adapted to more stages of pollutant removal filter materials according to different raw water pollution sources; two end faces of each stage of series filter material are sequentially provided with a support III (43), a support IV (44), a support V (45) and a support VI (46) for supporting and isolating, and the sections of the support III (43), the support IV (44), the support V (45) and the support VI (46) are permeable isolating filter screens; water from the drainage chamber I (12) flows through the multi-stage series of purification units (002) into the drainage chamber II (14).
The second-stage filter material (32) is a medium for removing heavy metals and turbidity particles, the structure of the second-stage filter material is an annular cylinder structure, the outer cylindrical surface of the annular cylinder is in sealed fit with the inner wall of the filter element shell (2), the inner cylindrical surface of the annular cylinder is in sealed fit with the outer cylindrical surface of the water outlet pipe (6), the top of the second-stage filter material is provided with a support III (43), the outer side of the top end surface is in sealed fit with a support II (42) through the support III (43) to form a water inlet cavity II (13), and the water inlet cavity II (13) is; the outer side of the bottom end surface of the second-stage filter material (32) is matched with the support IV (44) in a sealing mode.
Third level filter media (33) are for killing the bacterium and getting rid of turbidity granule medium, and its structure is cyclic annular cylinder structure, and the sealed adaptation of cyclic annular cylinder outer cylinder and filter core casing (2) inner wall, the sealed adaptation of the outer cylinder of cyclic annular cylinder inner cylinder and outlet pipe (6), the sealed adaptation of top end face outside and support IV (44), the sealed adaptation of bottom end face outside and support V (45).
The fourth-stage filter material (34) is an annular cylinder structure for removing heavy metal particle media such as lead and arsenic, the outer cylindrical surface of the annular cylinder is in sealed adaptation with the inner wall of the filter element shell (2), the inner cylindrical surface of the annular cylinder is in sealed adaptation with the outer cylindrical surface of the water outlet pipe (6), the outer side of the top end face is in sealed adaptation with the support V (45), and the outer side of the bottom end face is in sealed adaptation with the support VI (46).
The water purification unit C (003) comprises a fifth-stage filter material (35), a sixth-stage filter material (36), a bracket VII (47), a bracket VIII (48) and an isolation net (49), wherein the fifth-stage filter material (35) is a microfiltration membrane material for removing turbidity pollutants, and the structure of the fifth-stage filter material is an annular cylinder structure; the fifth-stage filter material (35) and the filter element shell (2) are arranged concentrically, the fifth-stage filter material (35) and the support VII (47) are arranged concentrically, and the upper end face of the fifth-stage filter material is matched with the support VII (47) in a sealing way; the bracket VII (47) and the water outlet pipe (6) are concentrically arranged, butted, sealed and adapted; the upper end surface of the bracket VII (47) supports the bracket VI (46), and a drainage cavity II (14) with the height difference of not less than 3 mm is formed between the upper end surface of the bracket VII (47) and the lower end surface of the bracket VI (46); the fifth stage filter material (35) and the bracket VIII (48) are concentrically arranged, and the lower end surface of the fifth stage filter material is in sealing fit with the bracket VIII (48); a water inlet cavity III (15) is formed between the outer cylindrical surface of the annular cylinder of the fifth-stage filter material (35) and the inner wall of the filter element shell (2), and is communicated with the drainage cavity II (14); the bracket VIII (48) is of a hollow cylindrical T-shaped structure, the bottom of the bracket VIII (48) is closed, and the bracket VIII (48) is supported at the bottom of the filter element shell (2); an annular drainage cavity III (16) is formed between the hollow outer cylindrical surface of the bracket VIII (48) and the inner cavity of the fifth-stage filter material (35); the sixth-stage filter material (36) is a charge balance sterilization ceramic particle sphere implanted with nano silver ions and nano aluminum ions, the sixth-stage filter material (36) is loosely filled in a hollow cylindrical cavity of the support VIII (48), and an isolation net (49) is arranged at the through connection part of the sixth-stage filter material and the water outlet pipe (6).
At least one drain hole (17) with the diameter not less than 1 mm is arranged on the cylindrical hollow cylinder of the bracket VIII (48) near the bottom and communicated with the drain cavity III (16).
The water purification flow of the filter element of the water purifier is as follows: raw water enters a water inlet cavity I (11) through a water inlet pipe (5); the water enters a drainage cavity I (12) after further passing through a water purification unit A (001) in the radial direction for purification, and enters a water inlet cavity II (13) for buffering; after further passing through a second-stage filter material (32), a third-stage filter material (33) and a fourth-stage filter material (34) which are connected in series with the water purification unit B (002) in a multi-stage manner, the water enters a drainage cavity II (14) and enters a water inlet cavity III (15) for buffering; after further purification by a fifth-stage filter material (35) radially passing through the water purification unit C (003), the purified water enters a drainage cavity III (16) for buffering; and further enters a sixth-stage filter material (36) through a water discharge hole (17) for purification, homogenization and sterilization, and then enters a water outlet pipe (6) through an isolation net (49) to finish the purification process.
The manufacturing step of the filter element of the water purifier comprises the following steps: a process of forming a water purification unit A (001), a water purification unit B (002) and a water purification unit C (003) into components; and a second step: the process of assembling and adapting the water purification unit A (001), the water purification unit B (002), the water purification unit C (003) component, the water outlet pipe (6) and related parts in the filter element bearing cavity (10).
The first step comprises the following steps:
the method comprises the steps of integrating a water purification unit A (001), and is characterized in that a first-stage filter material (31) is of an annular cylinder structure, the top of the first-stage filter material is concentrically arranged with a support I (41), and the first-stage filter material is matched with the support I in a sealing manner; the bottom and the bracket II (42) are concentrically arranged and are in sealing fit to form a whole;
a step of integrating a water purification unit B (002), which is characterized in that a second stage filter material (32), a third stage filter material (33) and a fourth stage filter material (34) are all hollow cylindrical structures, are concentrically arranged and are matched in series; and more levels of pollutant removing filter materials are adapted in series according to different raw water pollution sources; two end faces of each stage of series filter material are sequentially provided with a support III (43), a support IV (44), a support V (45) and a support VI (46) for supporting and isolating, and are integrated;
a step of integrating the water purification unit C (003), which is characterized in that the fifth-stage filter material (35) is of an annular cylinder structure, and the upper end surface of the fifth-stage filter material (35) is concentrically arranged with the bracket (47) and is in sealing fit with the bracket; the lower end surface of the fifth stage filter material (35) is concentrically arranged with the bracket VIII (48) and is in sealing fit with the bracket VIII; the support VIII (48) is of a hollow cylindrical T-shaped structure, and an annular drainage cavity III (16) is formed between the hollow outer cylindrical surface of the support VIII (48) and the inner cavity of the fifth-stage filter material (35); the particle spheres of the sixth stage filter material (36) are loosely filled in the hollow cylindrical cavity of the bracket VIII (48), and are blocked and isolated by the isolation net (49) to prevent movement.
The second step comprises the following steps:
assembling and adapting the water outlet pipe (6) in the filter element bearing cavity (10), wherein the water outlet pipe (6) and the filter element shell (2) are concentrically arranged; the outer cylindrical surface at the upper part of the water outlet pipe (6) is concentrically and hermetically matched with an inner hole arranged at the upper part of the filter element cover (1); the bottom of the water outlet pipe (6) is concentrically matched with an inner hole on a bracket VII (47) arranged at the upper part of the water purification unit C (003) in a sealing way; the water outlet pipe (6) sequentially penetrates through the water purification unit A (001) and the water purification unit B (002) and is concentrically butted, sealed and matched with a bracket VII (47) arranged on the water purification unit C (003);
assembling and adapting a water purification unit C (003) in a filter element bearing cavity (10), wherein the water purification unit C (003) and a filter element shell (2) are concentrically arranged, an outer positioning spigot is arranged at the bottom of a support VIII (48), an inner positioning spigot is arranged at the bottom of the filter element shell (2), the inner positioning spigot and the outer positioning spigot are adapted, and the support VIII (48) is positioned and supported at the bottom of the filter element shell (2);
assembling and adapting the water purification unit B (002) in the filter element bearing cavity (10), wherein the water purification unit B (002) and the filter element shell (2) are concentrically arranged; annular sealing rings are respectively arranged on the outer cylindrical surfaces of the second stage filter material (32), the third stage filter material (33) and the fourth stage filter material (34), and are matched with the inner cylindrical surface of the filter element shell (2) in a sealing way; annular sealing rings are respectively arranged on the inner cylindrical surfaces of the second stage filter material (32), the third stage filter material (33) and the fourth stage filter material (34), and are in sealing fit with the outer cylindrical surface of the water outlet pipe (6); the water purification unit B (002) is supported on the upper end surface of the bracket VII (47);
assembling and adapting a water purification unit A (001) in a filter element bearing cavity (10), wherein the upper part of the water purification unit A (001) is concentrically arranged with a filter element shell (2) to be in sealing adaptation with a support I (41) after being in sealing adaptation, and the lower part of the water purification unit A (001) is in sealing adaptation with a support II (42) after being in sealing adaptation with the support II to form sealing adaptation with the inner wall of the filter element shell (2); an annular space of not less than 0.5 mm is reserved between the inner hole of the bracket II (42) and the outer cylindrical surface of the water outlet pipe (6), and the annular space is communicated with the drainage cavity I (12).
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto but may be implemented by those skilled in the art, and all equivalent changes and modifications made according to the spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A water purifier cartridge comprising:
the filter element comprises a filter element cover (1), a filter element shell (2), a water purification unit A (001), a water purification unit B (002), a water purification unit C (003), a water inlet pipe (5) and a water outlet pipe (6); it is characterized in that the preparation method is characterized in that,
the main body of the filter element cover (1) is a hollow cylinder, a water inlet pipe (5) is arranged on the side surface of the filter element cover (1), and a water outlet pipe (6) is arranged at the center of the top of the filter element cover (1); the filter element shell (2) is a hollow cylinder with one end sealed and the other end opened; the filter element cover (1) and the filter element shell (2) are concentrically arranged, and the open end of the filter element cover (1) is matched with the open end of the filter element shell (2) in a sealing manner to form a filter element bearing cavity (10);
the water purification unit A (001), the water purification unit B (002) and the water purification unit C (003) are arranged concentrically with the filter element shell (2); the water outlet pipe (6) concentrically arranged with the filter element shell (2) sequentially penetrates through the water outlet pipe and is installed in the filter element bearing cavity (10) in a matching mode to form a grading water distribution channel and a grading purification system;
the filter element of the water purifier comprises at least two stages of purification units and corresponding adaptive structures, and forms a composite filter element which has radial flow and also has the axial flow multistage purification units connected in series; a water inlet cavity is arranged at the water inlet end of each stage of purification unit, a water discharge cavity is arranged at the water outlet end of each stage of water purification unit, and the water discharge cavity of the previous stage of water purification unit is the water inlet cavity of the next adjacent stage of water purification unit; the claims and descriptions are presented with respect to the three-stage purification unit as an example.
2. The filter element of the water purifier as recited in claim 1, wherein the water purifying unit A (001) comprises a first stage filter material (31), a bracket I (41) and a bracket II (42), the top of the bracket I (41) is concentrically and hermetically matched with the top of the filter element cover (1), the first stage filter material (31) is a degerming carbon rod with the filter diameter not more than 10 microns, an annular cylinder structure is arranged, the top of the annular cylinder is hermetically matched with the end of the bracket I (41), and the bottom of the annular cylinder is hermetically matched with the inner wall of the filter element shell (2) after being hermetically matched with the end of the bracket II (42); an outer cylindrical surface of the annular cylinder of the first-stage filter material (31) and the inner wall of the filter element bearing cavity (10) form a water inlet cavity I (11) and are communicated with the water inlet pipe (5); the inner cylindrical surface of the annular cylinder and the outer cylindrical surface of the water outlet pipe (6) form a drainage cavity I (12); and an annular water distribution hole which is not less than 0.5 mm is reserved between the inner hole of the bracket II (42) and the outer cylindrical surface of the water outlet pipe (6) and is communicated with the drainage cavity I (12).
3. The water purifier filter element as recited in claim 1, wherein the water purification unit B (002) comprises a second stage filter (32), a third stage filter (33), a fourth stage filter (34), a support III (43), a support IV (44), a support V (45), and a support VI (46); the device is characterized in that the second stage filter material (32), the third stage filter material (33) and the fourth stage filter material (34) are connected in series and adapted to form an axial water flow purification unit, and are connected in series and adapted to more stages of pollutant removal filter materials according to different raw water pollution sources; two end faces of each stage of series filter material are sequentially provided with a support III (43), a support IV (44), a support V (45) and a support VI (46) for supporting and isolating, and the sections of the support III (43), the support IV (44), the support V (45) and the support VI (46) are permeable isolating filter screens; the water from the drainage chamber I (12) flows through the purification units (002) in series in multiple stages into the drainage chamber II (14).
4. The filter element of the water purifier as recited in claim 3, wherein the second stage filter material (32) is a medium for removing heavy metals and turbidity particles, and the structure thereof is an annular cylinder structure, the outer cylinder surface of the annular cylinder is in sealing fit with the inner wall of the filter element shell (2), the inner cylinder surface of the annular cylinder is in sealing fit with the outer cylinder surface of the water outlet pipe (6), the support III (43) is arranged at the top, the outer side of the end surface of the top is in sealing fit with the support II (42) through the support III (43) to form a water inlet cavity II (13), and the water inlet cavity II (13) is communicated with the drainage cavity I (12); the outer side of the bottom end face of the second-stage filter material (32) is matched with the support IV (44) in a sealing mode.
5. The filter element of the water purifier as recited in claim 3, wherein the third stage filter medium (33) is a medium for killing bacteria and removing turbidity particles, and the structure thereof is an annular cylinder structure, the outer cylinder surface of the annular cylinder is in sealing fit with the inner wall of the filter element shell (2), the inner cylinder surface of the annular cylinder is in sealing fit with the outer cylinder surface of the water outlet pipe (6), the outer side of the top end surface is in sealing fit with the bracket IV (44), and the outer side of the bottom end surface is in sealing fit with the bracket V (45).
6. The filter element of the water purifier as recited in claim 3, wherein the fourth stage filter material (34) is a medium for removing heavy metal particles such as lead and arsenic, and has a structure of an annular cylinder, an outer cylindrical surface of the annular cylinder is in sealed fit with the inner wall of the filter element housing (2), an inner cylindrical surface of the annular cylinder is in sealed fit with an outer cylindrical surface of the water outlet pipe (6), the outer side of the top end surface is in sealed fit with the support V (45), and the outer side of the bottom end surface is in sealed fit with the support VI (46).
7. The filter element of the water purifier as recited in claim 1, wherein the water purifying unit C (003) comprises a fifth stage filter material (35), a sixth stage filter material (36), a bracket VII (47), a bracket VIII (48) and a separation net (49), wherein the fifth stage filter material (35) is a microfiltration membrane material for removing turbidity pollutants, and the structure of the fifth stage filter material is an annular cylinder structure; the fifth-stage filter material (35) and the filter element shell (2) are arranged concentrically, the fifth-stage filter material (35) and the support VII (47) are arranged concentrically, and the upper end face of the fifth-stage filter material is matched with the support VII (47) in a sealing manner; the bracket VII (47) and the water outlet pipe (6) are concentrically arranged, butted, sealed and matched; the upper end surface of the bracket VII (47) supports the bracket VI (46), and a drainage cavity II (14) with the height difference of not less than 3 mm is formed between the upper end surface of the bracket VII (47) and the lower end surface of the bracket VI (46); the fifth stage filter material (35) and the bracket VIII (48) are concentrically arranged, and the lower end surface of the fifth stage filter material is in sealing fit with the bracket VIII (48); a water inlet cavity III (15) is formed between the outer cylindrical surface of the annular cylinder of the fifth-stage filter material (35) and the inner wall of the filter element shell (2), and is communicated with the drainage cavity II (14); the bracket VIII (48) is of a hollow cylindrical T-shaped structure, the bottom of the bracket VIII (48) is closed, and the bracket VIII is supported at the bottom of the filter element shell (2); an annular drainage cavity III (16) is formed between the hollow outer cylindrical surface of the bracket VIII (48) and the inner cavity of the fifth-stage filter material (35); the sixth-stage filter material (36) is a charge balance sterilization ceramic particle sphere implanted with nano silver ions and nano aluminum ions, the sixth-stage filter material (36) is loosely filled in a hollow cylindrical cavity of the support VIII (48), and an isolation net (49) is arranged at the through connection position of the sixth-stage filter material and the water outlet pipe (6).
8. The water purifier cartridge as recited in claim 7, wherein at least one drain hole (17) of not less than 1 mm is provided in the cylindrical hollow cylinder of said frame VIII (48) near the bottom and communicates with the drain chamber III (16).
9. The filter element of water purifier as recited in claim 1, wherein the water purification process of the filter element of water purifier is:
raw water enters the water inlet cavity I (11) through the water inlet pipe (5); after further passing through the water purification unit A (001) in the radial direction for purification, the purified water enters the drainage cavity I (12) and enters the water inlet cavity II (13) for buffering; after further passing through a second stage filter material (32), a third stage filter material (33) and a fourth stage filter material (34) which are connected in series with each other in multiple stages of the water purification unit B (002), the water enters the drainage cavity II (14) and enters the water inlet cavity III (15) for buffering; after further purification by the fifth stage filter material (35) radially passing through the water purification unit C (003), the purified water enters the drainage cavity III (16) for buffering; and further enters the sixth-stage filter material (36) through the water discharge hole (17) to be purified, homogenized and sterilized, and then enters the water outlet pipe (6) through the separation net (49) to finish the purification process.
10. The water purifier cartridge according to claim 1, wherein the step of manufacturing the water purifier cartridge comprises the steps of: a process of forming the water purification unit A (001), the water purification unit B (002) and the water purification unit C (003) into an assembly; and a second step: assembling and adapting the water purification unit A (001), the water purification unit B (002), the water purification unit C (003) assembly, the water outlet pipe (6) and related parts in the filter element bearing cavity (10);
the first step comprises the following steps of,
10.1. the step of integrating the water purification unit A (001) is characterized in that the first-stage filter material (31) is of an annular cylinder structure, the top of the first-stage filter material is concentrically arranged with the bracket I (41), and the first-stage filter material is matched with the bracket I in a sealing manner; the bottom and the bracket II (42) are concentrically arranged and are in sealing fit to form a whole;
10.2. the step of integrating the water purification unit B (002) is characterized in that the second stage filter material (32), the third stage filter material (33) and the fourth stage filter material (34) are all hollow cylindrical structures, are concentrically arranged and are matched in series; and more levels of pollutant removing filter materials are adapted in series according to different raw water pollution sources; two end faces of each stage of series filter material are sequentially provided with a support III (43), a support IV (44), a support V (45) and a support VI (46) for supporting and isolating, and are integrated;
10.3. the step of integrating the water purification unit C (003), which is characterized in that the fifth-stage filter material (35) is of an annular cylinder structure, and the upper end surface of the fifth-stage filter material (35) is concentrically arranged with the bracket and the bracket (47) and is in sealing fit with the bracket and the bracket; the lower end face of the fifth stage filter material (35) is concentrically arranged with the bracket VIII (48) and is in sealing fit with the bracket VIII; the bracket VIII (48) is of a hollow cylindrical T-shaped structure, and an annular drainage cavity III (16) is formed between the hollow outer cylindrical surface of the bracket VIII (48) and the inner cavity of the fifth-stage filter material (35); the particle spheres of the sixth-stage filter material (36) are loosely filled in the hollow cylindrical cavity of the bracket VIII (48), and are blocked and isolated by the isolation net (49) to prevent movement;
the second step comprises the steps of,
10.4. assembling and fitting the water outlet pipe (6) in the filter element bearing cavity (10), wherein the water outlet pipe (6) and the filter element shell (2) are concentrically arranged; the outer cylindrical surface of the upper part of the water outlet pipe (6) is concentrically matched with an inner hole arranged at the upper part of the filter element cover (1) in a sealing way; the bottom of the water outlet pipe (6) is concentrically matched with an inner hole on the bracket VII (47) arranged at the upper part of the water purification unit C (003) in a sealing way; the water outlet pipe (6) sequentially penetrates through the water purification unit A (001) and the water purification unit B (002) and is concentrically butted, sealed and matched with the bracket VII (47) arranged on the water purification unit C (003);
10.5. assembling and adapting the water purification unit C (003) in the filter element bearing cavity (10), wherein the water purification unit C (003) and the filter element shell (2) are concentrically arranged, an outer positioning spigot is arranged at the bottom of the bracket VIII (48), an inner positioning spigot is arranged at the bottom of the filter element shell (2), the inner and outer positioning spigots are adapted, and the bracket VIII (48) is positioned and supported at the bottom of the filter element shell (2);
10.6. assembling the water purification unit B (002) into the filter element bearing cavity (10), wherein the water purification unit B (002) and the filter element shell (2) are arranged concentrically; annular sealing rings are respectively arranged on the outer cylindrical surfaces of the second stage filter material (32), the third stage filter material (33) and the fourth stage filter material (34), and are matched with the inner cylindrical surface of the filter element shell (2) in a sealing way; annular sealing rings are respectively arranged on the inner cylindrical surfaces of the second stage filter material (32), the third stage filter material (33) and the fourth stage filter material (34), and are in sealing fit with the outer cylindrical surface of the water outlet pipe (6); the water purifying unit B (002) is supported on the upper end face of the bracket VII (47);
10.7. assembling and adapting the water purification unit A (001) in the filter element bearing cavity (10), wherein the upper part of the water purification unit A (001) is in sealing and adapting transition with the bracket I (41) and then is in sealing and adapting concentric arrangement with the filter element shell (2), and the lower part of the water purification unit A (001) is in sealing and adapting transition with the bracket II (42) and then forms sealing and adapting with the inner wall of the filter element shell (2); and an annular space which is not less than 0.5 mm is reserved between the inner hole of the bracket II (42) and the outer cylindrical surface of the water outlet pipe (6), and the annular space is communicated with the drainage cavity I (12).
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Cited By (2)
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CN111821757A (en) * | 2020-07-28 | 2020-10-27 | 东莞市律奥过滤器有限公司 | Deionization filter with three-stage filtering function |
CN111821757B (en) * | 2020-07-28 | 2024-05-14 | 东莞市律奥过滤器有限公司 | Deionization filter with three-stage filtering function |
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CN205556331U (en) * | 2016-04-22 | 2016-09-07 | 易仲书 | Single multistage composite filter element in water route |
CN205635234U (en) * | 2016-03-09 | 2016-10-12 | 芜湖美的厨卫电器制造有限公司 | Water treatment device |
CN208320165U (en) * | 2018-05-14 | 2019-01-04 | 碧克仑(北京)净水科技有限公司 | A kind of Novel water-purifying composite filter element, water purification system and application |
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CN201694905U (en) * | 2010-05-21 | 2011-01-05 | 华英伦水科技(宁波)有限公司 | Domestic water purifier filter element |
CN205635234U (en) * | 2016-03-09 | 2016-10-12 | 芜湖美的厨卫电器制造有限公司 | Water treatment device |
CN205556331U (en) * | 2016-04-22 | 2016-09-07 | 易仲书 | Single multistage composite filter element in water route |
CN208320165U (en) * | 2018-05-14 | 2019-01-04 | 碧克仑(北京)净水科技有限公司 | A kind of Novel water-purifying composite filter element, water purification system and application |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN111821757A (en) * | 2020-07-28 | 2020-10-27 | 东莞市律奥过滤器有限公司 | Deionization filter with three-stage filtering function |
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