CN109694139B - Reverse osmosis composite filter element assembly - Google Patents
Reverse osmosis composite filter element assembly Download PDFInfo
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- CN109694139B CN109694139B CN201710984341.0A CN201710984341A CN109694139B CN 109694139 B CN109694139 B CN 109694139B CN 201710984341 A CN201710984341 A CN 201710984341A CN 109694139 B CN109694139 B CN 109694139B
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 115
- 239000002131 composite material Substances 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 331
- 238000002955 isolation Methods 0.000 claims abstract description 62
- 238000000746 purification Methods 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 84
- 238000007789 sealing Methods 0.000 claims description 46
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 description 11
- 238000002844 melting Methods 0.000 description 11
- 238000009826 distribution Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- -1 organic matters Substances 0.000 description 2
- 239000012945 sealing adhesive Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000003715 interstitial flow Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
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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
- C02F1/28—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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a reverse osmosis composite filter element assembly, which comprises an installing head, a shell and a reverse osmosis filter element positioned in the shell, wherein a first water passing gap is formed between the reverse osmosis filter element and the shell, the installing head is positioned at the end part of the shell, a raw water inlet is arranged on the installing head, the device comprises a pure water outlet and a concentrated water outlet, wherein a rear purification unit is arranged between a reverse osmosis filter element and an installation head, a central pipe is communicated with the pure water outlet through the rear purification unit, an isolation cover body is arranged outside the rear purification unit, a first flow channel is formed between the isolation cover body and the rear purification unit, one of a raw water inlet or the concentrated water outlet is communicated with one end, close to the installation head, of the reverse osmosis filter element through the first flow channel, a second water passing gap is formed between the isolation cover body and a shell, and the other of the raw water inlet or the concentrated water outlet is communicated with one end, far away from the installation head, of the reverse osmosis filter element through the second water passing gap and the first water passing gap. The invention reduces the number of the filter elements in the water purifier and simplifies the pipeline layout among the filter elements.
Description
Technical Field
The invention relates to a reverse osmosis composite filter element assembly, and belongs to the technical field of water treatment.
Background
Along with the improvement of the requirements of people on the quality of drinking water, a pure water system gradually enters a drinking water system of every family. The existing reverse osmosis water purifier is generally four-stage filtration, and each stage of filtration has a filter element. The first-stage PP cotton filter element mainly filters large-particle impurities; the second-stage front activated carbon filter element is mainly used for adsorbing impurities such as heterochromatic peculiar smell, colloid, residual chlorine and the like and protecting a reverse osmosis filter element at the rear end; the third-stage reverse osmosis filter element can filter impurities such as organic matters, colloid, bacteria, viruses and the like in raw water, particularly has extremely high filtering efficiency on impurities such as inorganic salt, heavy metal ions and the like, so that the reverse osmosis filter element forms a core component of the water purifier, and the filtering effect of the water purifier is directly related to that of the reverse osmosis filter element; the fourth-stage rear active carbon filter element mainly plays a role in absorbing heterochromatic peculiar smell and improving the taste. The four filter elements respectively play their roles, one of the filter elements is absent, and the other filter element can be a PP cotton filter element or an ultrafiltration filter element between the front active carbon filter element and the reverse osmosis filter element, so that the protection effect and the purification effect on the reverse osmosis filter element are further improved. However, the structure of a plurality of filter cores results in that the complete machine is bulky, occupies a large amount of kitchen spaces, and simultaneously, the pipeline overall arrangement between the filter cores is complicated, has improved the risk of leaking, and in addition, the filter core also can lead to filter core life monitoring and warning to complicate more, and the filter core is changed also relatively complicatedly, if have the filter core of the same or similar structure among the multistage filter core, the user has the possibility of changing the mistake even when changing the filter core, has influenced the purifying effect and the user experience of purifier greatly.
Disclosure of Invention
The invention provides a reverse osmosis composite filter element assembly, which aims at solving a series of problems of large volume, complex pipeline layout among filter elements, complex monitoring and reminding of filter element service life, complex replacement of filter elements and the like caused by a plurality of filter elements in a reverse osmosis water purifier, and the like, and comprises an installation head, a shell and a reverse osmosis filter element positioned in the shell, wherein a first water passing gap is formed between the reverse osmosis filter element and the shell, the installation head is positioned at the end part of the shell, the installation head is provided with a raw water inlet, a pure water outlet and a concentrated water outlet, the reverse osmosis filter element comprises a central tube and a reverse osmosis membrane wound on the central tube, and a raw water guide layer and a pure water guide layer communicated with the central tube are formed in the reverse osmosis membrane, and the reverse osmosis composite filter element assembly is characterized by comprising: the rear purification unit is positioned between the reverse osmosis filter element and the mounting head, and the central pipe is communicated with the pure water outlet through the rear purification unit; the isolation cover body is covered outside the rear purification unit; the first flow channel is positioned between the isolation cover body and the rear purification unit, the raw water inlet is communicated with one end, close to the mounting head, of the reverse osmosis filter element through the first flow channel, the flow direction of water flow entering the raw water guide layer from one end, close to the mounting head, of the reverse osmosis filter element is changed from axial flow to radial flow, and then one end, close to the mounting head, of the reverse osmosis filter element is filled; the second water passing gap is positioned between the isolation cover body and the shell, the concentrated water outlet is communicated with one end of the reverse osmosis filter element far away from the mounting head through the second water passing gap and the first water passing gap, and concentrated water sequentially flows through the first water passing gap and the second water passing gap and flows out of the filter element assembly from the concentrated water outlet.
Furthermore, the rear purification unit comprises a cylinder body and a filter material positioned in the cylinder body, the cylinder body comprises a top wall close to one end of the mounting head, a bottom wall far away from one end of the mounting head and a peripheral wall, a first through hole communicated with the pure water outlet is formed in the top wall, and a second through hole communicated with the central pipe is formed in the bottom wall.
Furthermore, a first guide rib extending along the radial direction is arranged on the outer side of the bottom wall of the cylinder body, and the first guide rib is abutted against the end part, close to the mounting head, of the reverse osmosis filter element; or the outer side of the peripheral wall of the cylinder body is provided with a second guide rib extending along the axial direction; or a third guide rib extending along the axial direction is arranged on the inner side of the peripheral wall of the isolation cover body; or a fourth guide rib extending along the radial direction is arranged on the inner side of the top wall of the isolation cover body, and the fourth guide rib is abutted against the outer side of the top wall of the cylinder body; or a fifth guide rib extending along the radial direction is arranged on the outer side of the top wall of the cylinder body, and the fifth guide rib is abutted against the inner wall of the isolation cover body.
Furthermore, the filter material is granular activated carbon, and pure water passes through the granular activated carbon along the axial direction.
Furthermore, a first flow dividing plate is arranged on the bottom wall of the cylinder body, a plurality of water passing holes are formed in the first flow dividing plate, a first flow dividing gap is formed between the first flow dividing plate and the bottom wall of the cylinder body, and the second through holes are communicated with the granular activated carbon sequentially through the first flow dividing gap and the water passing holes in the first flow dividing plate; or a second flow dividing plate is arranged on the top wall of the cylinder body, a plurality of water passing holes are formed in the second flow dividing plate, a second flow dividing gap is formed between the second flow dividing plate and the top wall of the cylinder body, and the granular activated carbon is communicated with the first through hole through the water passing holes in the second flow dividing plate and the second flow dividing gap in sequence.
Further, the filter media is rod-shaped activated carbon, the center of rod-shaped activated carbon is provided with a central flow channel, a gap flow channel is formed between the side wall of the rod-shaped activated carbon and the inner wall of the barrel, the end, far away from the mounting head, of the rod-shaped activated carbon is provided with a sealing end cover for sealing the end part, the sealing end cover seals the central flow channel and keeps away from one end of the mounting head, a third shunting gap is formed between the sealing end cover and the bottom wall of the barrel, the second through hole is communicated with the gap flow channel through the third shunting gap, and one end, close to the mounting head, of the central flow channel is communicated with the first through hole.
Furthermore, one end of the rear purification unit, which is close to the mounting head, is provided with a pure water outlet pipe which extends outwards, the outer end part of the pure water outlet pipe forms a pure water outlet, one end of the isolation cover body, which is close to the mounting head, is provided with a water passing through hole, the pure water outlet pipe penetrates through the water passing through hole, a water passing groove is formed between the outer wall of the pure water outlet pipe and the hole edge of the water passing through hole, and the water passing groove is communicated with the first flow channel and one of the raw water inlet or the concentrated water outlet.
Furthermore, a water path converter is arranged between the mounting head and the isolation cover body, the water path converter is sleeved outside the pure water outlet pipe and forms a second flow channel with the pipe wall of the pure water outlet pipe, the second flow channel is communicated with the first flow channel through a water channel, a sealing ring rib extending towards the mounting head is arranged on the periphery of the water channel, and one end, far away from the mounting head, of the water path converter is in sealing fit with the sealing ring rib.
Furthermore, a pure water through hole communicated with the pure water outlet is formed in one end, close to the mounting head, of the isolation cover body, a water passing groove is formed in the periphery of the pure water through hole and communicated with the first flow channel and one of the raw water inlet or the concentrated water outlet.
Furthermore, a pure water outlet pipe extending outwards is arranged at one end, close to the mounting head, of the isolation cover body, a pure water outlet is formed at the outer end of the pure water outlet pipe, the pure water through hole is formed in the pure water outlet pipe, the water passing groove is formed in the periphery of the pure water outlet pipe, a water path converter is arranged between the mounting head and the isolation cover body, the water path converter is sleeved outside the pure water outlet pipe and forms a second flow path with the pipe wall of the pure water outlet pipe, the second flow path is communicated with the first flow path through the water passing groove, a sealing ring rib extending towards the mounting head is arranged on the periphery of the water passing groove, and one end, far away from the mounting head, of the water path converter is in sealing fit with the sealing ring rib.
Furthermore, a third water passing gap is formed between the outer wall of the waterway converter and the inner wall of the mounting head, and the third water passing gap is communicated with the second water passing gap; or the outer wall of the waterway converter is in sealing fit with the inner wall of the mounting head, a third flow passage is arranged in the waterway converter, and the third flow passage is communicated with a second water passing gap.
Furthermore, the inner side of the peripheral wall of the isolation cover body is provided with a positioning boss, the positioning boss and the reverse osmosis filter element are abutted to one end close to the mounting head for positioning, the peripheral wall of the isolation cover body is further provided with a mounting ring rib extending towards the mounting head, and the mounting ring rib is coated outside the side wall of one end, close to the mounting head, of the reverse osmosis filter element and is in sealing fit with the reverse osmosis filter element.
According to the invention, the reverse osmosis filter element and the post-purification unit are arranged in one filter element assembly, so that the number of filter elements in the reverse osmosis water purifier is reduced, the pipeline layout between the filter elements is correspondingly simplified, and meanwhile, the service life monitoring and reminding of the filter elements and the filter element replacement are also simplified. The reverse osmosis composite filter element assembly provided by the invention can completely filter impurities such as organic matters, colloid, bacteria, viruses and the like in raw water, particularly inorganic salt, heavy metal ions and the like, and also has the effects of absorbing peculiar smell, improving the taste of pure water and the like. The reverse osmosis composite filter element assemblies provided by the invention can be arranged in a reverse osmosis water purifier, and can also be arranged in series, so that raw water can be repeatedly filtered for many times, and the produced water is cleaner, or the reverse osmosis composite filter element assemblies provided by the invention can also be connected in parallel, so that the water production efficiency is improved. The first flow passage is formed between the isolation cover body and the rear purification unit, and the raw water inlet is communicated with one end of the reverse osmosis filter element, which is close to the mounting head, through the first flow passage. This first flow path has great water cross sectional area, the rivers of being convenient for smoothly pass through, simultaneously, because rivers need change radial flow into from axial flow to when getting into the raw water guide in situ near installation head one end from the reverse osmosis filter core, the great water cross sectional area of first flow path makes the speed of rivers axial flow slower, be favorable to the rivers diversion and make the raw water change into radial flow more easily, and then the even reverse osmosis filter core that floods is close to installation head one end, make the reverse osmosis filter core obtain even utilization. In addition, the reverse osmosis filter element structure adopts a standardized central tube and a reverse osmosis membrane structure wound on the central tube, a complex water path structure is not required to be arranged, and the product cost is well controlled.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a cross-sectional view of a reverse osmosis cartridge assembly according to an embodiment of the invention;
FIG. 2 is a partial cross-sectional view of a reverse osmosis cartridge assembly according to an embodiment of the invention;
FIG. 3 is a side view of the cartridge in accordance with one embodiment of the present invention;
FIG. 4 is a top view of the cartridge in accordance with one embodiment of the present invention;
FIG. 5 is a schematic view of a first flow divider plate according to one embodiment of the present invention;
FIG. 6 is a side view of an isolation mask body according to an embodiment of the present invention;
FIG. 7 is a top view of an isolation mask body according to an embodiment of the present invention;
FIG. 8 is an isometric view of an isolation mask body according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a water circuit switch according to an embodiment of the present invention;
FIG. 10 is a cross-sectional view of a water circuit switch according to an embodiment of the present invention;
FIG. 11 is a partial cross-sectional view of a reverse osmosis cartridge assembly according to an embodiment of the invention;
FIG. 12 is a schematic view of a hermetic end cap according to a second embodiment of the present invention;
FIG. 13 is a schematic view of a can cover according to a second embodiment of the present invention;
FIG. 14 is a partial cross-sectional view of a three reverse osmosis cartridge assembly according to an embodiment of the invention;
FIG. 15 is a schematic view of an isolation mask body according to a third embodiment of the present invention;
FIG. 16 is a schematic view of a cartridge according to a third embodiment of the present invention;
fig. 17 is a partial cross-sectional view of a four reverse osmosis cartridge assembly according to an embodiment of the invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
As shown in fig. 1-10, a reverse osmosis composite filter element assembly comprises a mounting head 1, a housing 2 and a reverse osmosis filter element 3 positioned in the housing 2. Wherein, reverse osmosis filter core 3 includes center tube 31 and the winding reverse osmosis membrane 32 on center tube 31, form raw water guide layer and the communicating pure water guide layer with center tube 31 in the reverse osmosis membrane 32, in the process of making water, the raw water gets into raw water guide layer from the side of intaking of raw water guide layer, and flow along the runner wherein, in flow process, because the effect of front end pressure, form the pure water in pure water guide layer through reverse osmosis membrane 32 gradually, the pure water flows and is collected in center tube 31 along pure water guide layer, on the other hand, the water that flows out from the play water side of raw water guide layer then forms dense water.
A first water passing gap 21 is formed between the reverse osmosis filter element 3 and the shell 2, the mounting head 1 is positioned at the end part of the shell 2, and the mounting head 1 is provided with a raw water inlet 11, a pure water outlet 12 and a concentrated water outlet 13. According to the reverse osmosis composite filter element assembly, the three water inlets and the three water outlets are arranged at one end of the reverse osmosis composite filter element assembly, so that a user can conveniently disassemble and assemble the reverse osmosis composite filter element assembly, and water leakage risk points are reduced.
In the invention, the post-purification unit 4 is arranged between the reverse osmosis filter element 3 and the mounting head 1, the central tube 31 is communicated with the pure water outlet 12 through the post-purification unit 4, namely, the pure water enters the post-purification unit 4 after passing through the central tube 31 and then flows out from the pure water outlet 12 after being purified by the post-purification unit 4, namely, two stages of filter elements are compounded in one shell 2 to form a composite filter element, so that the number of the filter elements in the reverse osmosis water purifier is reduced, correspondingly, the pipeline layout between the filter elements is simplified, and meanwhile, the service life monitoring and reminding of the filter elements and the filter element replacement are also simplified. Specifically, an isolation cover body 5 covering the rear purification unit 4 is further arranged in the filter element assembly, a first flow passage 51 is formed between the isolation cover body 5 and the rear purification unit 4, and the raw water inlet 11 is communicated with one end, close to the mounting head 1, of the reverse osmosis filter element 3 through the first flow passage 51. This first flow channel 51 has great water cross sectional area, the rivers of being convenient for smoothly pass through, simultaneously, because rivers need change radial flow into from axial flow to the flow direction when getting into in the raw water guide layer from reverse osmosis filter core 3 near installation head 1 one end, the great water cross sectional area of crossing of first flow channel 51 makes the speed of rivers axial flow slower, be favorable to the rivers diversion and make the raw water change into radial flow more easily, and then the even reverse osmosis filter core 3 that floods is close to installation head 1 one end, make reverse osmosis filter core 3 obtain even utilization. It should be noted that, in this context, the axial direction refers to a direction parallel to the central axis of the reverse osmosis filter element, and the radial direction refers to a direction perpendicular to the central axis of the reverse osmosis filter element. It should be noted that a filter material may be placed in the first flow passage to form a pre-purification unit, for example, granular activated carbon, PP cotton, activated resin, etc. may be placed in the first flow passage. A second water passing gap 22 is formed between the isolation cover body 5 and the shell 2, the concentrated water outlet 13 is communicated with one end of the reverse osmosis filter element 3 far away from the mounting head 1 through the second water passing gap 22 and the first water passing gap 21, raw water flows out from one end of the reverse osmosis filter element 3 far away from the mounting head 1 after flowing through a raw water guide layer to form concentrated water, and the concentrated water sequentially flows through the first water passing gap 21 and the second water passing gap 22 and flows out of the filter element assembly from the concentrated water outlet 13.
It will be understood by those skilled in the art that the raw water inlet 11 and the concentrated water outlet 13 in the above embodiments can be reversed, that is, the raw water and the concentrated water flow in opposite directions, the raw water enters the filter element assembly and then enters the raw water guide layer from the end of the reverse osmosis filter element 3 away from the mounting head 1 along the second water passing gap 22 and the first water passing gap 21 in sequence, the concentrated water is formed at the end of the reverse osmosis filter element 3 close to the mounting head 1, the concentrated water flows out of the filter element assembly after passing through the first flow channel 51, and the flow direction of the pure water portion is unchanged.
In this embodiment, the post-purification unit 4 includes a cylinder 41 and a filter 42 located in the cylinder 41. The cylinder 41 includes a top wall 411 near one end of the mounting head 1, a bottom wall 412 far from one end of the mounting head 1, and a peripheral wall 413, and it is understood that the top wall and the bottom wall are only distinguished according to their relative positions, and the top wall 411 and the bottom wall 412 in the present embodiment are flat, but may be curved or have other shapes. The bottom wall 412 is provided with a second through hole 415 communicating with the center tube 31, a sealing wall 416 extending towards the center tube 31 is provided in the hole of the second through hole 415, the sealing wall 416 extends into the center tube 31 and forms a seal with the inner wall thereof, of course, the sealing may also be performed in other manners, for example, the center tube extends towards the mounting head and extends into the second through hole, and the outer wall of the center tube forms a seal with the hole edge of the second through hole.
The inner side of the peripheral wall of the isolation cover body 5 is provided with a positioning boss 52, and the positioning boss 52 is abutted and positioned with one end of the reverse osmosis filter element 3 close to the mounting head 1, so that the isolation cover body 5 can be conveniently confirmed to be mounted in place. The peripheral wall of the isolation cover body 5 is also provided with an installation ring rib 53 extending back to the installation head 1, the installation ring rib 53 is wrapped outside the side wall of the reverse osmosis filter element 3 close to one end of the installation head 1 and is in sealing fit with the end part of the reverse osmosis filter element 3, generally, a sealing adhesive tape can be wound outside the installation ring rib 53 to bond and fix the installation ring rib and the reverse osmosis filter element, the first flow passage 51 and the second water passing gap 22 are effectively isolated, and the phenomenon that dense water and raw water are mixed with each other is avoided. In addition, a positioning bulge can be arranged on the outer side of the peripheral wall of the isolating cover body and abutted against the inner wall of the shell to prevent the sealing adhesive tape from being separated due to the fact that the isolating cover body is pressed, and the positioning bulge can be a rib extending along the axial direction to further improve the guiding effect on water flow in the second water passing gap.
The outer side of the bottom wall 412 of the cylinder 41 is provided with a first guide rib 431 extending along the radial direction, and the first guide rib 431 is abutted against the end part of the reverse osmosis filter element 3 close to the mounting head 1, so that on one hand, the flow of water is guided along the radial direction, and on the other hand, the axial mounting and positioning of the cylinder 41 are facilitated. The second guiding rib 432 extending along the axial direction is arranged outside the circumferential wall 413 of the cylinder 41, which is beneficial to guiding water flow to flow along the axial direction in the first flow channel 51, and preferably, the second guiding rib 432 can abut against the inner wall of the isolation cover body 5, so that the relative position of the cylinder 4 and the isolation cover body 5 can be conveniently positioned, and certainly, a third guiding rib extending along the axial direction can be arranged inside the circumferential wall of the isolation cover body. In this embodiment, the inner side of the top wall of the isolation cover body 5 is provided with a fourth guide rib 434 extending along the radial direction, the fourth guide rib 434 abuts against the outer side of the top wall of the cylinder body 4, water flow is guided to flow along the radial direction, meanwhile, the isolation cover body 5 and the cylinder body 4 are positioned and installed, or a fifth guide rib extending along the radial direction can be arranged on the outer side of the top wall of the cylinder body, and the fifth guide rib abuts against the inner wall of the isolation cover body.
In this embodiment, filter media 42 is granular activated carbon, and the pure water passes through granular activated carbon along the axial, and rearmounted purification unit 4 has undertaken the function of rearmounted activated carbon filter core in traditional reverse osmosis water purification machine promptly, in addition, can optimize the route and the contact time when pure water passes through rearmounted purification unit 4 through the axial dimension of adjusting rearmounted purification unit 4 for it is long to reach better purifying effect. The first flow distribution plate 44 is disposed on the bottom wall of the cylinder 41, the first flow distribution plate 44 is provided with a plurality of water passing holes 441, preferably, the water passing holes 441 are uniformly distributed on the first flow distribution plate 44, meanwhile, a first flow distribution gap 442 is formed between the first flow distribution plate 44 and the bottom wall 412 of the cylinder 41, and the second through holes 415 sequentially pass through the first flow distribution gap 442 and the water passing holes 441 on the first flow distribution plate 44 and are communicated with the granular activated carbon, so that the pure water can effectively flow and disperse along the first flow distribution gap 442 in the radial direction after passing through the second through holes 415, and then uniformly enters from the end of the granular activated carbon through the water passing holes 441, thereby preventing the granular activated carbon in a partial area from being not utilized, and improving the utilization rate of the granular activated carbon. Wherein, the inner side of the bottom wall 412 of the cylinder 41 is provided with a raised rib 436, the rib 436 abuts against the first flow dividing plate 44 to form a first flow dividing gap 442, and the rib 436 extends along the radial direction to facilitate guiding the water flow to be dispersed along the radial flow. In addition, the outer edge of the first splitter plate 44 may be attached to the inner wall of the cylinder 41, or a gap may be left between the outer edge and the inner wall to facilitate the flow of water. In order to prevent the granular activated carbon from leaking from water holes or other gaps, structures which can pass water, such as non-woven fabrics or nylon nets, can be arranged at corresponding positions. It will be appreciated that the first diversion gap may also be formed by other means, such as: ribs or protrusions are arranged on one side, facing the bottom of the cylinder, of the first flow dividing plate, so that a first flow dividing gap is supported; or, a bulge or a step structure is arranged on the inner wall of the cylinder, and the outer edge of the first flow dividing plate is erected on the bulge or the step structure so as to support the first flow dividing gap. Similarly, in order to avoid uneven utilization rate of the end, close to the mounting head, of the granular activated carbon, a second flow dividing plate can be arranged on the top wall of the cylinder body, a plurality of water passing holes are formed in the second flow dividing plate, a second flow dividing gap is formed between the second flow dividing plate and the top wall of the cylinder body, and the granular activated carbon is communicated with the first through hole sequentially through the water passing holes in the second flow dividing plate and the second flow dividing gap.
One end of the isolation cover body 5 close to the mounting head 1 is provided with a pure water through hole 54 communicated with the pure water outlet 12, the periphery of the pure water through hole 54 is provided with a water passing groove 55, and the water passing groove 55 is communicated with the first flow passage 51 and the raw water inlet 11. Specifically, the isolation cover body 5 is close to installation head 1 one end and is equipped with outside pure water outlet pipe 56 that extends, the outer tip of pure water outlet pipe 56 constitutes pure water delivery port 12, pure water through-hole 54 is located pure water outlet pipe 56, it is located the periphery of pure water outlet pipe 56 to cross basin 55, it is fixed with pure water outlet pipe 56 through splice bar 551 to cross the outer edge of water basin 55, and then make pure water outlet pipe 56 and the isolation cover body 5 form an organic whole, be convenient for holistic reliable assembly, of course, pure water outlet pipe and the isolation cover body also can be the components of dividing, the pure water outlet pipe is through with the isolation cover body, the cooperation of leaning on of parts such as barrel realizes fixed mounting. The top wall 411 of the cylinder 41 is provided with a first through hole 414 communicated with the pure water outlet 12, the hole edge of the first through hole 414 is provided with a sealing wall 417 extending towards the mounting head 1, and the sealing wall 417 is inserted into the pure water outlet pipe 56 to form sealing fit.
In this embodiment, a waterway converter 6 is disposed between the mounting head 1 and the isolation cover body 5, the waterway converter 6 is sleeved outside the pure water outlet pipe 56 and forms a second flow channel 62 with a pipe wall of the pure water outlet pipe 56, the second flow channel 62 is communicated with the first flow channel 51 through the water channel 55, a sealing ring rib 552 extending toward the mounting head 1 is disposed on the periphery of the water channel 55, and one end of the waterway converter 6, which is far away from the mounting head 1, is in sealing fit with the sealing ring rib 552. Of course, the waterway converter may be integrally formed with the isolation cover. Preferably, the inner wall of the waterway converter 6 is provided with a sixth guide rib 64, the sixth guide rib 64 extends along the axial direction, and plays a role in guiding when being assembled with the pure water outlet pipe 56 and extending into the process, and has a certain guiding effect on water flow, on the other hand, the sixth guide rib 64 abuts against and is positioned with the outer wall of the pure water outlet pipe 56, generally, the sixth guide rib 64 is at least three. The mounting head 1 and the housing 2 are generally connected by spin-melting, and considering the rotation between the sixth guiding rib 64 and the outer wall of the pure water outlet pipe 56 during spin-melting, a gap of 0.2-1 mm can be preferably maintained between the sixth guiding rib and the outer wall, so as to avoid the mounting deviation between the sixth guiding rib and the outer wall. In order to avoid damage to the pure water outlet pipe 56 during the rotary melting process, the outer wall of the pure water outlet pipe 56 is provided with an anti-melting ring mounting groove 561, an anti-melting ring is arranged in the anti-melting ring mounting groove 561, an anti-melting ring rib 65 abutted against the anti-melting ring is arranged in the water path converter 6, the water path converter 6 is positioned through the anti-melting ring and the anti-melting ring rib 65 after being assembled, and due to the fact that the two parts are in continuous contact, the heat generated by relative movement of the two parts in the rotary melting process and the probability of damage to the parts are greatly reduced. Meanwhile, the anti-melting ring rib 65 is fixed in the waterway converter 6 through the sixth guide rib 64, and a gap 66 is formed between the anti-melting ring rib 65 and the inner wall of the waterway converter 6, and the gap 66 is a part of the second flow channel 62 for passing the raw water.
A third water passing gap 23 is arranged between the outer wall of the waterway converter 6 and the inner wall of the mounting head 1, and the third water passing gap 23 is communicated with the second water passing gap 22 so as to communicate the second water passing gap 22 with the concentrated water outlet 13. Or a third flow passage can be arranged in the waterway converter, the third flow passage is communicated with the second water passing gap, and the outer wall of the waterway converter is in sealing fit with the inner wall of the mounting head.
Based on the filter element assembly with the structure, in the water preparation process, raw water enters the filter element assembly from the raw water inlet 11, flows along the second flow passage 62 between the water path converter 6 and the pure water outlet pipe 56, enters the first flow passage 51 between the isolation cover body 5 and the cylinder body 41 through the water passing groove 55, and reaches the end part, close to the mounting head 1, of the reverse osmosis filter element 3 along the first flow passage 51. Then, the raw water enters the raw water guide layer and passes through the raw water guide layer along the axial direction, under the action of membrane forward pressure, part of the water enters the pure water guide layer through the reverse osmosis membrane 32 to form pure water, the pure water flows along the pure water guide layer and gradually enters the central tube 31, then flows along the central tube 31 and enters the first diversion gap 442 in the post-purification unit 4 through the second through hole 415, and under the action of the first diversion plate 44, the pure water uniformly contacts with the filter material 42 in the cylinder 41, passes through the filter material 42 along the axial direction, passes through the first through hole 414 and the pure water outlet pipe 56 in sequence, and finally flows out from the pure water outlet 12. Part of the raw water which does not pass through the reverse osmosis membrane 32 flows out from one end of the raw water guide layer far away from the mounting head 1 to form concentrated water, and the concentrated water passes through the first water passing gap 21, the second water passing gap 22 and the third water passing gap 23 in sequence and finally flows out from the concentrated water outlet 13.
As a second embodiment of the present invention, as shown in fig. 11 to 13, unlike the first embodiment, the filter medium 42a in the post-purification unit 4a in this embodiment is rod-shaped activated carbon, which may be compressed activated carbon or rod-shaped activated carbon formed by winding carbon fibers around a holder. Because the filter element group spare inner space is limited, under the certain condition of filter element group spare height, the axial height of rearmounted purification unit is big, then the axial height of reverse osmosis filter core has been little, and this is unfavorable for guaranteeing reverse osmosis filter core desalination. In the embodiment, the rod-shaped activated carbon has higher purification efficiency in unit volume, can be better matched with a large-flux reverse osmosis filter element, and has purification effect and service life.
Specifically, a central flow passage 421a is provided in the center of the rod-shaped activated carbon 42a, a gap flow passage 422a is formed between the side wall of the rod-shaped activated carbon 42a and the inner wall of the cylinder 41a, and water flows from the gap flow passage 422a through the rod-shaped activated carbon 42a into the central flow passage 421a, passes through the pure water outlet pipe 56a after the purification operation of the post-purification unit 4a, and flows out of the filter element module from the pure water outlet 12 a. Of course, axially extending ribs may also be provided on the inside of the sidewall of the cylinder 41a to guide the axial flow of water within the interstitial flow channel 422 a. The end of the rod-shaped activated carbon 42a far away from the mounting head 1a is provided with a sealing end cover 44a for sealing the end, meanwhile, the sealing end cover 44a seals the end of the central flow passage 421a far away from the mounting head 1a, the side of the sealing end cover 44a facing the rod-shaped activated carbon 42a is provided with a positioning convex rib 443a, and the positioning convex rib 443a extends into the central flow passage 421a and is abutted against the inner wall of the central flow passage 421a for positioning. The end cap 44a serves to fix the rod-shaped activated carbon 42a and to prevent pure water from directly entering the central flow passage 421a from the end of the rod-shaped activated carbon 42a, thereby impairing the purification effect. A third diversion gap 444a is formed between the sealing end cover 44a and the bottom wall of the cylinder, and the second through hole 415a is communicated with the gap flow channel 422a through the third diversion gap 444a, so that the water entering from the second through hole 415a enters the gap flow channel 422a, wherein the forming manner of the third diversion gap 444a may refer to the forming manner of the first diversion gap 442 in the first embodiment, and the details thereof are not repeated. The center flow path 421a communicates with the first through hole 414a near the mounting head 1a and is connected to the pure water outlet 12 a.
Further, the rod-shaped activated carbon 42a is hermetically fitted to the top wall 411a of the cylinder 41a at the end close to the mounting head 1 a. In this embodiment, the cylinder 41a includes a cylinder cover 411a, and the cylinder cover 411a constitutes a top wall of the cylinder 41 a. The outer edge of the cylinder cover 411a is provided with a positioning convex rib 418a, and the positioning convex rib 418a and the side wall of the rod-shaped activated carbon 42a abut against and limit.
Other structures in this embodiment, such as the isolation cover body, the water path converter, the first flow channel, the guiding rib, the reverse osmosis filter element, the central tube, and their corresponding coordination and mutual communication relation, can refer to the above-mentioned embodiments, and are not described herein again.
As a third embodiment of the present invention, as shown in fig. 14 to 16, a pure water outlet pipe 56b extending outward is provided at one end of the cylinder 41b near the mounting head 1b, and an outer end of the pure water outlet pipe 56b forms the pure water outlet 12 b. One end of the isolation cover body 5b close to the mounting head 1b is provided with a water passing through hole 57b, and the pure water outlet pipe 56b passes through the water passing through hole 57 b. A water passing groove 571b is formed between the outer wall of the pure water outlet pipe 56b and the hole edge of the water passing through hole, the water passing groove 571b is communicated with the first flow passage 51b and the raw water inlet 11b, wherein one of the hole edge of the water passing through hole or the outer wall of the pure water outlet pipe can be provided with a positioning rib extending in the radial direction for abutting against the other one of the hole edge of the water passing through hole or the outer wall of the pure water outlet pipe for positioning, and the assembly position of the cylinder and the isolation cover body is ensured.
A water path converter 6b is arranged between the mounting head 1b and the isolation cover body 5b, the water path converter 6b is sleeved outside the pure water outlet pipe 56b and forms a second flow channel 62b with the pipe wall of the pure water outlet pipe 56b, and the second flow channel 62b is communicated with the first flow channel 51b through a water tank 571 b. The periphery of the water passing groove 571b has a sealing ring rib 552b extending toward the mounting head 1b, and one end of the waterway switcher 6b far away from the mounting head 1b is in sealing fit with the sealing ring rib 552 b. Of course, the waterway converter may be integrally formed with the isolation cover.
Other structures in this embodiment, such as the isolation cover body, the first flow channel, the guiding rib, the reverse osmosis filter element, the central tube and their corresponding matching and mutual communicating relationship, the filter material in the cylinder and its waterway structure, etc. can refer to the above embodiments, and are not described herein again.
As shown in fig. 17, according to a fourth embodiment of the present invention, the isolation cover body 5c is a separate body, and includes an isolation cover body 58c and a filter element end cap 59 c. The shield body 58c is disposed outside the rear purge unit 4c with the first flow passage 51c formed therebetween. The filter element end cover 59c is fixed at the end part of the reverse osmosis filter element 3c close to the mounting head 1c to separate the raw water flow passage and the concentrated water flow passage at the two sides. The filter element end cap 59c has a mounting hole at the center thereof for mounting and fixing with the isolation cover body 58c, and the mounting hole is in sealing fit after assembly, and the hole of the second through hole 415c of the cylinder 41c has a pipeline extending away from the mounting head 1c, and the pipeline passes through the mounting hole to be in sealing fit with the center tube 31c, but of course, the center tube may also pass through the mounting hole to be in sealing fit with the second through hole. The cartridge end cap 59c in this embodiment has a top wall that forms a radially diverging gap for the feed water flow with the end of the reverse osmosis cartridge 3 c. It will be appreciated that the top of the filter element end cap may not have a top wall, but may be open, with the filter element end cap sealingly engaging the end of the isolation cup body adjacent the reverse osmosis filter element. Other structures in this embodiment can be used in reference to the above-described embodiment, and will not be further developed here.
It should be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention, which is defined by the appended claims.
Claims (12)
1. The utility model provides a compound filter element group spare of reverse osmosis, includes installation head, shell and the reverse osmosis filter core that is located the shell, first water clearance of crossing has between reverse osmosis filter core and the shell, the installation head is located the tip of shell, be equipped with raw water inlet, pure water delivery port and dense water delivery port on the installation head, reverse osmosis filter core includes the center tube and twines the reverse osmosis membrane on the center tube, form raw water guide layer in the reverse osmosis membrane and with the communicating pure water guide layer of center tube, its characterized in that includes:
the rear purification unit is positioned between the reverse osmosis filter element and the mounting head, and the central pipe is communicated with the pure water outlet through the rear purification unit;
the isolation cover body is covered outside the rear purification unit;
the first flow channel is positioned between the isolation cover body and the rear purification unit, the raw water inlet is communicated with one end, close to the mounting head, of the reverse osmosis filter element through the first flow channel, the flow direction of water flow entering the raw water guide layer from one end, close to the mounting head, of the reverse osmosis filter element is changed from axial flow to radial flow, and then one end, close to the mounting head, of the reverse osmosis filter element is filled;
the second water passing gap is positioned between the isolation cover body and the shell, the concentrated water outlet is communicated with one end of the reverse osmosis filter element far away from the mounting head through the second water passing gap and the first water passing gap, and concentrated water sequentially flows through the first water passing gap and the second water passing gap and flows out of the filter element assembly from the concentrated water outlet.
2. The reverse osmosis composite filter element assembly according to claim 1, wherein the post purification unit comprises a cylinder body and a filter material positioned in the cylinder body, the cylinder body comprises a top wall close to one end of the mounting head, a bottom wall far away from one end of the mounting head and a peripheral wall, the top wall is provided with a first through hole communicated with the pure water outlet, and the bottom wall is provided with a second through hole communicated with the central pipe.
3. The reverse osmosis composite filter element assembly according to claim 2, wherein a first guide rib extending in the radial direction is arranged on the outer side of the bottom wall of the cylinder body, and the first guide rib abuts against the end part, close to the mounting head, of the reverse osmosis filter element; or the outer side of the peripheral wall of the cylinder body is provided with a second guide rib extending along the axial direction; or a third guide rib extending along the axial direction is arranged on the inner side of the peripheral wall of the isolation cover body; or a fourth guide rib extending along the radial direction is arranged on the inner side of the top wall of the isolation cover body, and the fourth guide rib is abutted against the outer side of the top wall of the cylinder body; or a fifth guide rib extending along the radial direction is arranged on the outer side of the top wall of the cylinder body, and the fifth guide rib is abutted against the inner wall of the isolation cover body.
4. A reverse osmosis composite filter element assembly according to claim 2, wherein the filter material is granular activated carbon through which pure water passes in an axial direction.
5. The reverse osmosis composite filter element assembly according to claim 4, wherein a first flow dividing plate is arranged on the bottom wall of the cylinder body, a plurality of water passing holes are formed in the first flow dividing plate, a first flow dividing gap is formed between the first flow dividing plate and the bottom wall of the cylinder body, and the second through holes are communicated with the granular activated carbon sequentially through the first flow dividing gap and the water passing holes in the first flow dividing plate;
or a second flow dividing plate is arranged on the top wall of the cylinder body, a plurality of water passing holes are formed in the second flow dividing plate, a second flow dividing gap is formed between the second flow dividing plate and the top wall of the cylinder body, and the granular activated carbon is communicated with the first through hole through the water passing holes in the second flow dividing plate and the second flow dividing gap in sequence.
6. A reverse osmosis composite filter element assembly according to claim 2, wherein the filter material is rod-shaped activated carbon, a central flow passage is formed in the center of the rod-shaped activated carbon, a gap flow passage is formed between the side wall of the rod-shaped activated carbon and the inner wall of the barrel, a sealing end cover for sealing the end part of the rod-shaped activated carbon is arranged at the end, away from the mounting head, of the rod-shaped activated carbon, the sealing end cover seals the end, away from the mounting head, of the central flow passage, a third shunting gap is formed between the sealing end cover and the bottom wall of the barrel, the second through hole is communicated with the gap flow passage through the third shunting gap, and the end, close to the mounting head, of the central flow passage is communicated with the first through hole.
7. The reverse osmosis composite filter element assembly according to claim 1, wherein the rear purification unit is provided with a pure water outlet pipe extending outwards at one end close to the mounting head, the outer end part of the pure water outlet pipe forms a pure water outlet, the isolation cover body is provided with a water passing through hole at one end close to the mounting head, the pure water outlet pipe passes through the water passing through hole, a water passing groove is formed between the outer wall of the pure water outlet pipe and the hole edge of the water passing through hole, and the water passing groove is communicated with the first flow channel and one of the raw water inlet or the concentrated water outlet.
8. The reverse osmosis composite filter element assembly according to claim 7, wherein a waterway converter is arranged between the mounting head and the isolation cover body, the waterway converter is sleeved outside the pure water outlet pipe and forms a second flow channel with the pipe wall of the pure water outlet pipe, the second flow channel is communicated with the first flow channel through a water passing groove, a sealing ring rib extending towards the mounting head is arranged on the periphery of the water passing groove, and one end of the waterway converter, which is far away from the mounting head, is in sealing fit with the sealing ring rib.
9. The reverse osmosis composite filter element assembly according to claim 1, wherein the isolation cover body is provided with a pure water through hole communicated with the pure water outlet at one end close to the mounting head, and a water passing groove is formed at the periphery of the pure water through hole and communicated with the first flow passage and one of the raw water inlet or the concentrated water outlet.
10. A reverse osmosis composite filter element assembly according to claim 9, wherein the isolating cover body is provided with a pure water outlet pipe extending outwards at one end close to the mounting head, the outer end of the pure water outlet pipe forms a pure water outlet, the pure water through hole is located in the pure water outlet pipe, the water passing groove is located at the periphery of the pure water outlet pipe, a water path converter is arranged between the mounting head and the isolating cover body, the water path converter is sleeved outside the pure water outlet pipe and forms a second flow path with the pipe wall of the pure water outlet pipe, the second flow path is communicated with the first flow path through the water passing groove, the periphery of the water passing groove is provided with a sealing ring rib extending towards the mounting head, and one end of the water path converter, which is far away from the mounting head, is in sealing fit with the sealing ring rib.
11. The reverse osmosis composite filter element assembly according to claim 8 or 10, wherein a third water passing gap is formed between the outer wall of the waterway converter and the inner wall of the mounting head, and the third water passing gap is communicated with the second water passing gap; or the outer wall of the waterway converter is in sealing fit with the inner wall of the mounting head, a third flow passage is arranged in the waterway converter, and the third flow passage is communicated with a second water passing gap.
12. The reverse osmosis composite filter element assembly according to claim 1, wherein the isolation cover body is provided with a positioning boss inside the peripheral wall, the positioning boss is abutted to one end of the reverse osmosis filter element close to the mounting head for positioning, the peripheral wall of the isolation cover body is further provided with a mounting ring rib extending away from the mounting head, and the mounting ring rib covers the side wall of the reverse osmosis filter element close to the mounting head and is in sealing fit with the reverse osmosis filter element.
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| CN201710984341.0A CN109694139B (en) | 2017-10-20 | 2017-10-20 | Reverse osmosis composite filter element assembly |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008100127A (en) * | 2006-10-17 | 2008-05-01 | Toyobo Co Ltd | Fluid separation membrane element |
| CN105540902A (en) * | 2016-03-08 | 2016-05-04 | 北京四季沐歌太阳能技术集团有限公司 | Compact type RO (reverse osmosis) water purifier filter element |
| CN206156806U (en) * | 2016-10-26 | 2017-05-10 | 佛山市美的清湖净水设备有限公司 | Filter element and water purification equipment |
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2017
- 2017-10-20 CN CN201710984341.0A patent/CN109694139B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008100127A (en) * | 2006-10-17 | 2008-05-01 | Toyobo Co Ltd | Fluid separation membrane element |
| CN105540902A (en) * | 2016-03-08 | 2016-05-04 | 北京四季沐歌太阳能技术集团有限公司 | Compact type RO (reverse osmosis) water purifier filter element |
| CN206156806U (en) * | 2016-10-26 | 2017-05-10 | 佛山市美的清湖净水设备有限公司 | Filter element and water purification equipment |
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