CN112755786A - Filter core and reverse osmosis water purifier - Google Patents
Filter core and reverse osmosis water purifier Download PDFInfo
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- CN112755786A CN112755786A CN202110011468.0A CN202110011468A CN112755786A CN 112755786 A CN112755786 A CN 112755786A CN 202110011468 A CN202110011468 A CN 202110011468A CN 112755786 A CN112755786 A CN 112755786A
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- pure water
- reverse osmosis
- water
- waste
- osmosis membrane
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 314
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 117
- 239000012528 membrane Substances 0.000 claims abstract description 159
- 239000002351 wastewater Substances 0.000 claims abstract description 155
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 239000002699 waste material Substances 0.000 claims description 26
- 239000010410 layer Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 8
- 230000002441 reversible effect Effects 0.000 claims description 6
- 239000000565 sealant Substances 0.000 claims description 5
- 239000012945 sealing adhesive Substances 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 description 15
- 229910021641 deionized water Inorganic materials 0.000 description 15
- 230000000694 effects Effects 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009295 crossflow filtration Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
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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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a filter element and a reverse osmosis water purifier, wherein the filter element comprises a shell, and a reverse osmosis membrane element and a water path converter which are accommodated in the shell, the shell comprises a cover body, the cover body is provided with a raw water inlet, a waste water outlet and a pure water outlet, a raw water flow path is formed in the shell, the inner side of the cover body is convexly provided with a first sleeve communicated with the pure water outlet and a second sleeve communicated with the waste water outlet, and the second sleeve surrounds the outer side of the first sleeve; the reverse osmosis membrane element comprises a membrane element body and a first end cover, wherein a waste water pipeline and a pure water pipeline are arranged inside the membrane element body, a pure water inlet and a waste water inlet are formed in the side part of the membrane element body, and a waste water outlet and a pure water joint are formed in the first end cover; the waterway converter is buckled on the first end cover and is provided with a first sleeve which is communicated with the wastewater outlet and is hermetically sleeved with the pure water joint, and a second sleeve is hermetically sleeved with the waterway converter. The filter element sealing assembly structure is simple, and the water way is reasonably arranged.
Description
Case information
This application is based on the division of the chinese patent application No. 201610951781.1 entitled filter element and reverse osmosis water purifier, filed on 26/10/2016, and is incorporated herein by reference in its entirety.
Technical Field
The invention relates to the technical field of reverse osmosis water purification, in particular to a filter element and a reverse osmosis water purifier applying the filter element.
Background
The filter pipeline of the filter element of the existing water purifier adopts a cross-flow filtering scheme, the water inlet direction is generally the axial direction of the membrane element, and although the water inlet mode can realize filtration, the water inlet mode has overlong flow channel and slow flow speed, is easy to accumulate dirt and can influence the service life of the membrane. Meanwhile, the design of cross flow filtration also makes the sealing structure of the filtration pipeline complex, so that the overall assembly structure of the filter element is complex.
Disclosure of Invention
The invention mainly aims to provide a filter element, which aims to realize reasonable separation of three water ways of raw water, waste water and pure water in the filter element and simplify a sealing assembly structure of the filter element.
In order to achieve the purpose, the filter element provided by the invention comprises a shell, and a reverse osmosis membrane element and a waterway converter which are accommodated in the shell,
the shell comprises a shell and a cover body which are mutually buckled, the cover body is provided with a raw water inlet, a waste water outlet and a pure water outlet, the shell, the reverse osmosis membrane element and the water path converter are jointly surrounded to form a raw water flow path communicated with the raw water inlet, a first sleeve communicated with the pure water outlet and a second sleeve communicated with the waste water outlet are convexly arranged on the inner side of the cover body, and the second sleeve surrounds the outer side of the first sleeve;
the reverse osmosis membrane element comprises a membrane element body and a first end cover, wherein a wastewater pipeline and a pure water pipeline which extend in the length direction of the membrane element body are arranged in the membrane element body, a pure water inlet which is communicated with a raw water pipeline and the pure water pipeline and a wastewater inlet which is communicated with the raw water pipeline and the wastewater pipeline are arranged on the side part of the membrane element body, the first end cover is arranged at one end of the membrane element body, and is provided with a wastewater outlet which is communicated with the wastewater pipeline and a pure water joint which is communicated with the pure water pipeline;
the waterway converter is buckled with the first end cover and is provided with an inner cavity communicated with the wastewater outlet, the first sleeve is hermetically sleeved with the pure water joint, and the second sleeve is hermetically sleeved with the waterway converter.
Preferably, at least one first annular groove is formed in the connection position of the pure water joint and the first sleeve, and a first sealing ring is embedded in the first annular groove.
Preferably, at least one second annular groove is formed at the joint of the waterway converter and the first sleeve, and a second sealing ring is embedded in the second annular groove
Preferably, the second sleeve is disposed coaxially around the first sleeve.
Preferably, the membrane element body includes: the central pipe group comprises a pure water pipe and a plurality of waste water pipes arranged at intervals, the waste water pipes are distributed around the pure water pipe, the pure water pipe is internally provided with the pure water pipeline, and the waste water pipe is internally provided with the waste water pipeline;
a plurality of RO membrane units, each RO membrane unit having a first portion located inside the central tube group and a second portion located outside the central tube group, each said waste water pipe and said plain water pipe being separated by the first portion of one said RO membrane unit; a second portion of the plurality of reverse osmosis membrane modules surrounding the central tube bank in a multi-layer membrane configuration;
and the two sealing adhesive layers are respectively arranged at the two ends of the plurality of reverse osmosis membrane groups in the length direction of the central pipe group and are adhered to the plurality of reverse osmosis membrane groups.
Preferably, each reverse osmosis membrane group comprises a reverse osmosis membrane, a water inlet diversion net and a pure water diversion net;
the front surface of the reverse osmosis membrane of each reverse osmosis membrane group is folded inwards, and the second parts of the reverse osmosis membrane groups are overlapped and wound around the central pipe group together along the circumferential direction; a water inlet flow passage is formed between the interlayers on the front sides of the same reverse osmosis membrane; a water production flow channel is formed between the reverse side interlayers of two adjacent reverse osmosis membranes; the water inlet flow guide net and the waste water pipe are positioned in the water inlet flow passage, and the pure water flow guide net is positioned in the water production flow passage.
Preferably, the reverse osmosis membrane element further comprises a second end cover, the second end cover is arranged at the other end of the membrane element body, and the first end cover and the second end cover are respectively bonded and fixed with the corresponding sealing glue layers.
Preferably, a plurality of first extension pipes are convexly arranged on the inner side of the first end cover corresponding to the plurality of waste water pipes, extend into the corresponding waste water pipes, and are communicated with the waste water discharge port and the corresponding waste water pipes;
and a second extension pipe is convexly arranged on the inner side of the first end cover corresponding to the position of the pure water pipe, extends into the pure water pipe and is communicated with the pure water joint and the pure water pipe.
Preferably, a plurality of first positioning protrusions corresponding to the plurality of waste water pipes are convexly arranged on the inner side of the second end cover, and the first positioning protrusions extend into the corresponding waste water pipes;
and the inner side of the second end cover is convexly provided with a second positioning bulge corresponding to the position of the pure water pipe, and the second positioning bulge extends into the pure water pipe.
Preferably, the cross section of the pure water pipe is arranged in an N-edge shape, wherein N is greater than or equal to 3, the pure water pipe correspondingly comprises N side surfaces, and each side surface is provided with the pure water inlet;
the number of the waste pipes is matched with the number of the side surfaces, and each waste pipe is arranged corresponding to the position of one side surface.
Preferably, the cross section of the pure water pipe is circular, the circumferential wall of the pure water pipe is divided into a plurality of arc surface sections along the circumferential direction of the pure water pipe, and each arc surface section is provided with the pure water inlet;
the quantity of the waste water pipes is matched with that of the cambered surface sections, and each waste water pipe is arranged corresponding to one position of the cambered surface section.
Preferably, a waste water guide groove is formed in the peripheral wall of the waste water pipe, and the waste water inlet is formed in the waste water guide groove.
The invention also provides a reverse osmosis water purifier, which comprises a filter element, wherein the filter element comprises a shell, a reverse osmosis membrane element and a waterway converter which are contained in the shell,
the shell comprises a shell and a cover body which are mutually buckled, the cover body is provided with a raw water inlet, a waste water outlet and a pure water outlet, the shell, the reverse osmosis membrane element and the water path converter are jointly surrounded to form a raw water flow path communicated with the raw water inlet, a first sleeve communicated with the pure water outlet and a second sleeve communicated with the waste water outlet are convexly arranged on the inner side of the cover body, and the second sleeve surrounds the outer side of the first sleeve;
the reverse osmosis membrane element comprises a membrane element body and a first end cover, wherein a wastewater pipeline and a pure water pipeline which extend in the length direction of the membrane element body are arranged in the membrane element body, a pure water inlet which is communicated with a raw water pipeline and the pure water pipeline and a wastewater inlet which is communicated with the raw water pipeline and the wastewater pipeline are arranged on the side part of the membrane element body, the first end cover is arranged at one end of the membrane element body, and is provided with a wastewater outlet which is communicated with the wastewater pipeline and a pure water joint which is communicated with the pure water pipeline;
the waterway converter is buckled with the first end cover and is provided with an inner cavity communicated with the wastewater outlet, the first sleeve is hermetically sleeved with the pure water joint, and the second sleeve is hermetically sleeved with the waterway converter.
The technical proposal of the invention adopts the technical proposal that a raw water flow passage communicated with a raw water inlet is enclosed by the inner wall of a shell, a reverse osmosis membrane element and a water passage converter, a first sleeve and a second sleeve which are arranged in a protruding way are arranged at the inner side of a cover body, the first sleeve and the second sleeve are respectively sleeved on a pure water joint and a water passage converter on an end cover correspondingly, so that the first sleeve, the pure water joint and the pure water passage form a pure water passage communicated with a pure water outlet on the end cover, and the second sleeve, the water passage converter and the waste water passage form a waste water passage communicated with a waste water outlet on the end cover, thereby forming three water passages which extend in the length direction of the filter element in the filter element, leading the water passage in the raw water to be more reasonably arranged, leading the raw water in the raw water flow passage to enter from the side part of the, the service life of the filter element is longer. This scheme cup joints through lid and reverse osmosis membrane component and water route converter simultaneously and can realize the sealed isolation in three water routes for the water route seal structure of filter core is simple, has also simplified the assembly structure of filter core.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is an exploded view of a filter cartridge according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the cartridge of FIG. 1;
FIG. 3 is a schematic structural view of the reverse osmosis membrane element of FIG. 1;
FIG. 4 is a cross-sectional view of the reverse osmosis membrane element of FIG. 3 taken along line A-B-C;
FIG. 5 is a schematic view of the cover of the filter cartridge of FIG. 1;
FIG. 6 is a plan view of a part of the reverse osmosis membrane element of FIG. 1;
FIG. 7 is a schematic sectional view showing a partial structure of a reverse osmosis membrane element shown in FIG. 6;
fig. 8 is a schematic view of the central tube set of the cartridge of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
153 | Waste |
| 10 | Reverse |
154 | |
| 11 | |
155 | |
| 111 | |
157 | |
| 111a | |
17 | |
| 111b | Pure water inlet | 171 | A |
| 113 | |
173 | |
| 113a | |
30 | Waterway road-changing |
| 113b | |
302 | Second |
| 12 | Raw |
304 | |
| 13 | Reverse |
50 | |
| 131 | |
51 | |
| 133 | Water inlet |
53 | |
| 135 | Pure |
55 | Waste water outlet |
| 14 | |
57 | |
| 15 | |
59 | |
| 151 | |
70 | Outer casing |
| 152 | A first annular groove |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a filter cartridge 100.
Referring to fig. 1 and 2, in the embodiment of the present invention, the filter cartridge 100 includes a housing, and a reverse osmosis membrane element 10 and a waterway converter 30 accommodated in the housing, the housing includes a housing 70 and a cover 50 fastened to each other, the cover 50 is provided with a raw water inlet 51, a waste water outlet 55 and a pure water outlet 53, the housing, the reverse osmosis membrane element 10 and the waterway converter 30 together enclose a raw water flow path 12 communicating with the raw water inlet 51, a first sleeve 57 communicating with the pure water outlet 53 and a second sleeve 59 communicating with the waste water outlet 55 are protruded on an inner side of the cover 50, and the second sleeve 59 surrounds an outer side of the first sleeve 57. The reverse osmosis membrane element 10 includes a membrane element body (not shown) provided with a waste water line 113a and a pure water line 111a extending in a longitudinal direction thereof, a pure water inlet 111b communicating the raw water line 12 and the pure water line 111a, and a waste water inlet 113b communicating the raw water line 12 and the waste water line 113a, on a side portion of the membrane element body, and a first end cap 15 provided at one end of the membrane element body, the first end cap 15 being provided with a waste water outlet 153 communicating the waste water line 113a, and a pure water joint 151 communicating the pure water line 111 a. The water passage switch 30 is fastened to the first end cap 15 and has an inner cavity communicating with the waste water outlet 153, the first sleeve 57 is sealingly fitted over the deionized water joint 151 so that the deionized water pipe 111a communicates with the deionized water outlet 53, and the second sleeve 59 is sealingly fitted over the water passage switch 30 so that the waste water pipe 113a communicates with the waste water outlet 55.
The housing 70 and the cover 50 of this embodiment may be made of plastic and manufactured by injection molding. The first sleeve 57 and the second sleeve 59 on the cover 50 are also integrally formed with the cover 50 during the injection molding process, and the second sleeve 59 and the first sleeve 57 are coaxially disposed (see fig. 5), so that the sleeving operation of the cover 50 and the reverse osmosis membrane element 10 and the waterway converter 30 is more convenient, and the drainage flow rate is more uniform. Of course, the housing 70 and the cover 50 may be made of metal, such as food grade stainless steel. The housing 70 and the cover 50 may be screwed to form a sealed chamber, and the reverse osmosis membrane element 10 and the waterway converter 30 are located in the sealed chamber. The water passage switch 30 may also be made of plastic and manufactured by injection molding, the water passage switch 30 may be hollow cylinder, and the opening of the inner cavity of the first end cover is reduced from one end to the other end, the end with the larger opening is covered on the first end cover 15, and the outer end of the pure water joint 151 of the first end cap 15 is flush with the smaller opening end of the water channel switch 30, the first sleeve 57 partially extends into the inner cavity of the water channel switch 30 and is sleeved on the pure water joint 151, the inner wall of the first sleeve 57 is in sealing contact with the outer wall of the pure water joint 151, the inner wall of the second sleeve 59 is in contact with the outer wall of the water channel switch 30, that is, the first socket 57 and the inner cavity of the pure water joint 151 form a pure water discharge passage communicating the pure water line 111a and the pure water outlet 53, and a wastewater discharge passage communicating the wastewater line 113a and the wastewater outlet 55 is formed between the second socket 59 and the pure water joint 151.
The technical scheme of the invention is that a raw water channel communicated with a raw water inlet 51 is formed by enclosing the inner wall of a shell together with a reverse osmosis membrane element 10 and a water channel converter 30, a first sleeve 57 and a second sleeve 59 which are arranged in a mutually surrounding way are convexly arranged on the inner side of a cover body 50, a pure water joint 151 and the water channel converter 30 which are connected on an end cover in a sealing way are respectively and correspondingly sealed through the first sleeve 57 and the second sleeve 59, so that the first sleeve 57, the pure water joint 151 and a pure water pipeline 111a form a pure water channel communicated with a pure water outlet 53 on the cover body 50 together, and the second sleeve 59, the water channel converter 30 and a waste water pipeline 113a form a waste water channel communicated with a waste water outlet 55 on the cover body 50 together, thereby forming three water channels which extend in the length direction of the filter element 100 in the filter element 100, leading the water channel in the filter element 100 to be more reasonable, leading the side part of, the water filtration efficiency of the filter element 100 is higher, impurities are not easy to precipitate, and the service life of the filter element 100 is longer. Meanwhile, the cover body 50, the reverse osmosis membrane element 10 and the water path converter 30 are sleeved to realize the sealing isolation of three water paths, so that the water path sealing structure of the filter element 100 is simple, and the assembly structure of the filter element 100 is also simplified.
In order to further improve the sealing performance of the water path of the filter cartridge 100 of the present invention, at least one first annular groove 152 is formed at the connection portion of the pure water joint 151 and the first sleeve 57, and a first sealing ring 154 is embedded in the first annular groove 152. The first sealing ring 154 can be made of rubber, the first sealing ring 154 is tightly attached to the outer wall of the first sleeve 57 and the outer wall of the pure water joint 151 through elastic deformation of the first sealing ring 154, and then the pure water channel and the wastewater channel are isolated, so that the sealing structure is simple and reliable.
At least one second annular groove 302 is formed at the joint of the waterway converter 30 and the first sleeve 57, and a second sealing ring 304 is embedded in the second annular groove 302. The function and effect of the second seal ring 304 can be similar to the first seal ring 154, and will not be described in detail herein.
Referring to fig. 3 to 8, the membrane element body includes a central tube group 11, a plurality of reverse osmosis membrane groups 13 and two sealant layers 14, the central tube group 11 includes a pure water pipe 111 and a plurality of waste water pipes 113 arranged at intervals, the plurality of waste water pipes 113 are arranged around the pure water pipe 111, the pure water pipe 111a is formed in the pure water pipe 111, and the waste water pipe 113a is formed in the waste water pipe 113. Each of the RO membrane units 13 has a first portion (not shown) located inside the center tube group 11 and a second portion (not shown) located outside the center tube group 11, each of the waste water pipe 113 and the plain water pipe 111 being partitioned by the first portion of one of the RO membrane units 13; a second portion of the plurality of reverse osmosis membrane modules 13 forms a multi-layer membrane structure around the periphery of the central tube group 11. The two sealant layers 14 are respectively disposed at both ends of the plurality of reverse osmosis membrane groups 13 in the length direction of the central tube group 11, and are bonded to the plurality of reverse osmosis membrane groups 13.
The reverse osmosis membrane element 10 further comprises a second end cap 17, the second end cap 17 is covered on the other end of the membrane element body, and the first end cap 15 and the second end cap 17 are respectively bonded and fixed with the corresponding sealant layer 14
Each waste water pipe 113 of the reverse osmosis membrane element 10 corresponds to one reverse osmosis membrane group 13, so that a plurality of membranes can be curled, the number of flow channels can be increased, the raw water flux can be improved, and the problem that part of the reverse osmosis membrane 131 does not achieve the filtering purpose due to overlong reverse osmosis membrane 131 and insufficient osmotic pressure can be solved; the two ends of the reverse osmosis membrane group 13 are respectively sealed by the two sealing adhesive layers 14 (it should be noted that the sealing adhesive layers 14 cannot seal the inner pipe openings of the pure water pipe 111 or the waste water pipe 113), so as to prevent water from flowing out or in from the two ends of the reverse osmosis membrane group 13, and a raw water path for flowing water from the outer side of the reverse osmosis membrane group 13 and discharging waste water from the middle waste water pipe 113 can be formed.
When the reverse osmosis membrane element 10 is used, raw water flows in through a side flow, a flow channel is narrowed, the water inlet area is reduced, a low-thickness water inlet flow guide net 133 can be adopted in the reverse osmosis membrane group 13, the water inlet area is continuously reduced, the flow is greatly increased, the contact time of the raw water and the reverse osmosis membrane 131 can be prolonged, and the raw water recovery rate is improved; meanwhile, because the raw water inlet area is reduced, the water flow speed on the surface of the permeable membrane of the reverse osmosis membrane set 13112 can be increased (when the water inlet flux is constant, the relation between the water inlet flux Q and the water flow speed V is V-Q/S, wherein S is the water inlet area, specifically, S is Ld, L is the length of the membrane at the water inlet end 21, d is the section thickness, and the side flow mainly reduces L, and in addition, the thickness d is naturally reduced by using a small water inlet flow guide net 133), the concentration polarization on the surface of the reverse osmosis membrane 131 can be reduced, the pollution speed of the reverse osmosis membrane element 1010 is reduced, the raw water recovery rate is favorably improved, the waste problem of raw water is improved, and the effect of saving raw water is achieved.
Each reverse osmosis membrane group 13 comprises a reverse osmosis membrane 131, a water inlet diversion net 133 and a pure water diversion net 135;
the front surface of the reverse osmosis membrane 131 of each reverse osmosis membrane group 13 is folded inwards, and the second parts of a plurality of reverse osmosis membrane groups 13 are overlapped and wound around the central pipe group 11 along the circumferential direction together; a water inlet flow passage is formed between the front interlayers of the same reverse osmosis membrane 131; a water production flow channel is formed between the reverse interlayer of two adjacent reverse osmosis membranes 131; the water inlet diversion net 133 and the waste pipe 113 are positioned in the water inlet runner, and the pure water diversion net 135 is positioned in the water production runner.
Each reverse osmosis membrane group 13 comprises a reverse osmosis membrane 131, a water inlet diversion net 133 and a pure water diversion net 135; the water inlet guide nets 133 and the pure water guide nets 135 may be respectively disposed on both front and back sides of the reverse osmosis membrane 131, raw water flows on the front side of the reverse osmosis membrane 131, and pure water permeates from the front side of the reverse osmosis membrane 131 to the back side of the reverse osmosis membrane 131 by osmotic pressure, and pure water is generated on the back side of the reverse osmosis membrane 131 and flows to the pure water pipe 111 by the guide of the pure water guide nets 135. The reverse osmosis membrane 131 can be folded to enable the front surface to be adjacent to the front surface and the back surface to be adjacent to the back surface, so that unnecessary contact is avoided, and pure water is prevented from being polluted; in actual operation, the reverse osmosis membrane 131 can be folded inwards at the front or at the back, and can be reasonably selected according to actual conditions. In the present embodiment, the reverse osmosis membrane 131 of each reverse osmosis membrane group 13 is folded inwards in front, and the second parts of the multiple reverse osmosis membrane groups 13 are overlapped and wound around the central tube group 11 in the circumferential direction together; a water inlet flow passage is formed between the front interlayers of the same reverse osmosis membrane 131; a water production flow channel is formed between the reverse interlayer of two adjacent reverse osmosis membranes 131; the influent water diversion network 133 and the wastewater 113 are located in the influent water channel and the pure water diversion network 135 is located in the product water channel. At this time, the water inlet flow channel and the water production flow channel are independent and thoroughly isolated, so that the water inlet flow guide net 133 of each reverse osmosis membrane group 13 can be effectively ensured not to be contacted with the pure water pipe 111 and the reverse surfaces of the reverse osmosis membranes 131 of other reverse osmosis membrane groups 13; the pure water diversion net 135 of each reverse osmosis membrane group 13 is not contacted with the waste water pipe 113 and the front surfaces of the reverse osmosis membrane sheets 131 of other reverse osmosis membrane groups 13; raw water flows only in the water inlet channel and is finally discharged by the waste water pipe 113, and pure water flows only in the water production channel and is finally discharged by the pure water pipe 111, so that the pollution of the pure water is avoided, and the purification effect is ensured. In order to smoothly lead out the pure water, in the present embodiment, the water generating flow passage may be sealed to close the sides other than the side near the pure water pipe 111, so that the water generating flow passage has only the pure water outlet 53 toward the pure water pipe 111; at the moment, the water producing flow channel forms a membrane bag with three sealed sides and one opened side, the opening of the membrane bag faces to the pure water pipe 111, and the pure water in the membrane bag is limited to only flow towards the pure water pipe 111; the raw water produces pure water after the action of the reverse osmosis membrane 131, and the pure water is formed in the membrane bag and flows into the mouth of the bag to enter the pure water pipe 111. During actual operation, can realize sealing through rolling up when membrane operation, the sealed position at both ends can also utilize two sealant layers 14 to carry out the secondary seal simultaneously, and then realizes better sealed effect.
Referring to fig. 3, the membrane element body is positioned by clamping the pure water pipe 111, the waste water pipe 113 and the reverse osmosis membrane stack 13 at two ends thereof by the first end cap 15 and the second end cap 17, respectively. Meanwhile, in order to simplify the water path, only the pure water joints 151 and the waste water discharge ports 153 are provided on the first end cap 15, and it should be noted that the number of the waste water discharge ports 153 is the same as the number of the waste water pipes 113 of the membrane element body, that is, each waste water discharge port 153 on the end cap is provided with a waste water pipe 113a communicated with one waste water pipe 113, and the pure water joints 151 on the first end cap 15 are provided in communication with the pure water pipes 111 of the membrane element body. In practical use, the reverse osmosis membrane element 10 is generally vertically placed, at this time, the corresponding pure water pipe 111 and the plurality of waste water pipes 113 are also placed along the vertical direction, the first end cap 15 is above, the second end cap 17 is below, the lower port of the pure water pipe 111 is plugged, the lower ports of the plurality of waste water pipes 113 are plugged, pure water and waste water are collected from the upper end, water flow is uniform, and the design of pipelines is convenient.
Referring to fig. 3 and 5, in order to realize the butt joint of the waste pipe 113 and the waste water outlet, a plurality of first extending pipes 155 communicated with the waste water outlet 153 are convexly arranged on the inner side of the first end cover 15 corresponding to the positions and the number of the waste pipe 113, and the first extending pipes 155 extend into the corresponding waste pipe 113 to communicate the waste water outlet 153 with the waste pipe 113; specifically, the one end of the first stretching-in pipe 155 stretches into the waste water pipeline 113a communicated with the waste water pipe 113 in the waste water pipe 113, and the other end of the first stretching-in pipe 155 is communicated with the waste water outlet 153, so that the communication of the water channel is reliably realized, meanwhile, the first stretching-in pipe 155 also has a positioning function, the alignment of the first end cover 15 and the central pipe group 11 can be assisted, and the structural compactness and the reliability of the reverse osmosis membrane element 10 are improved. In order to realize the butt joint of the deionized water pipe 111 and the deionized water pipe 111a, a second inlet pipe 157 which communicates with the deionized water discharge port is protruded at the position of the deionized water pipe 111 inside the first cap 15, and the second inlet pipe 157 is inserted into the deionized water pipe 111a of the deionized water pipe 111 to communicate with the deionized water discharge port 53 and the deionized water pipe 111a of the deionized water pipe 111. The second penetration tube 157 may have a similar function and effect to the first penetration tube 155, and thus will not be described in detail.
To facilitate the second end cap 17 installation; referring to fig. 4, in the present embodiment, a plurality of first positioning protrusions 171 are convexly disposed at positions and numbers of the inner side of the second end cap 17 corresponding to the waste pipe 113, and the first positioning protrusions 171 extend into the waste pipe 113; the inner side of the second end cap 17 is convexly provided with a second positioning protrusion 173 corresponding to the deionized water pipe 111, and the second positioning protrusion 173 extends into the deionized water pipe 111. The alignment operation of the second end cap 17 can be simplified by the first positioning protrusion 171 being engaged with the waste water pipe 113 and the second positioning protrusion 173 being engaged with the plain water pipe 111, and the center pipe group 11 and the second end cap 17 being connected by the first positioning protrusion 171 and the second positioning protrusion 173, the structural compactness and reliability of the entire reverse osmosis membrane element 10 can be further improved.
The number of the wastewater pipes 113 is N, wherein N is greater than or equal to 3; the cross section of the pure water pipe 111 is arranged in an N-edge shape and correspondingly provided with N side surfaces, and each side surface is provided with the pure water inlet 111 b; each of the waste pipes 113 is disposed at a position corresponding to one of the side surfaces. The side of each waste pipe 113 facing the side surface may be a flat surface to facilitate the penetration and winding of the reverse osmosis membrane stack 13. Specifically, in this embodiment, N is 5, that is, the number of the waste water pipes 113 is 5, the cross section of the deionized water pipe 111 is substantially regular pentagonal, and has five side surfaces, and each waste water pipe 113 is disposed at a position corresponding to one of the side surfaces. The arrangement mode can ensure that each waste water pipe 113 individually corresponds to one side surface 212 of the pure water pipe 111, and the waste water pipes do not interfere with each other when the film rolling operation is carried out, thereby facilitating the film rolling operation. In order to ensure that pure water produced by the reverse osmosis membrane group 13 corresponding to each waste water pipe 113 can be timely collected into the pure water pipe 111, preferably, a plurality of pure water inlets 111b are arranged on each side surface at intervals, and the plurality of pure water inlets 111b are uniformly arranged along the length direction of the pure water pipe 111, so that pure water at each position can rapidly flow into the near pure water inlets 111 b; in order to discharge the waste water in time, a plurality of internal passages through which the waste water inlets 113b enter the waste water pipe 113 are formed in each waste water pipe 113 at intervals, and the plurality of waste water inlets 113b are uniformly arranged along the length direction of the waste water pipe 113, so that the waste water at each position can rapidly flow into the adjacent waste water inlets 113b to enter the internal passages of the waste water pipe 113.
In another embodiment of the present invention, the cross section of the pure water pipe 111 is circular, the circumferential wall of the pure water pipe 111 is divided into a plurality of arc-shaped sections (not shown) corresponding to the plurality of waste water pipes 113 along the circumferential direction, and each arc-shaped section is provided with the pure water inlet 111 b; each waste pipe 113 is arranged corresponding to the position of one cambered surface section. The arrangement mode can ensure that each waste water pipe 113 independently corresponds to one cambered surface section of the pure water pipe 111, and the waste water pipes are not mutually interfered when the film rolling operation is carried out, so that the film rolling operation is convenient. In order to ensure that pure water produced by the reverse osmosis membrane group 13 corresponding to each waste water pipe 113 can be timely collected into the pure water pipe 111, preferably, a plurality of pure water inlets 111b are arranged on each arc surface section at intervals, and the plurality of pure water inlets 111b are uniformly arranged along the length direction of the pure water pipe 111, so that pure water at each position can rapidly flow into the near pure water inlets 111 b; in order to discharge the waste water in time, a plurality of internal passages through which the waste water inlets 113b enter the waste water pipe 113 are formed in each waste water pipe 113 at intervals, and the plurality of waste water inlets 113b are uniformly arranged along the length direction of the waste water pipe 113, so that the waste water at each position can rapidly flow into the adjacent waste water inlets 113b to enter the internal passages of the waste water pipe 113.
For the convenience of the film rolling operation, the pure water pipe 111 and the plurality of waste water pipes 113 may be arranged to be combined together to form a cylinder; when the membrane is rolled, the central tube group 11 is relatively uniform in rotation, so that deflection is not easy to occur, and simultaneously, the appearance of the rolled product is relatively uniform, so that the rolled product is convenient to install in a shell of the spiral-rolled reverse osmosis membrane element 10, and the alignment and sealing of an end cover of the spiral-rolled reverse osmosis membrane element 10 and the rolled product are also convenient.
A wastewater guide groove is formed in the peripheral wall of the wastewater pipe 113, and the wastewater inlet 113b is formed in the wastewater guide groove. The concrete position, shape and quantity that set up of waste water guiding gutter can be selected according to particular case, and in this embodiment, the interval is equipped with a plurality of waste water guiding gutters that extend along waste pipe 113 circumference on this waste pipe 113, all is equipped with a waste water inlet 113b in each waste water guiding gutter, and the waste water guiding gutter has the effect of catchmenting and water conservancy diversion, can help waste water more accurate quick get into in waste pipe 113. The wastewater diversion trench with other shapes can also realize the effects of water collection and diversion without further limitation
The invention further provides a water purifier, which comprises the filter element 100, the specific structure of the filter element 100 refers to the above embodiments, and the water purifier adopts all technical solutions of all the above embodiments, so that the water purifier at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (14)
1. The filter element is characterized by comprising a shell, and a reverse osmosis membrane element and a waterway converter which are contained in the shell, wherein the shell, the reverse osmosis membrane element and the waterway converter are enclosed together to form a raw water flow path; the reverse osmosis membrane element comprises a membrane element body, a waste water pipeline and a pure water pipeline are arranged in the membrane element body, and the waste water pipeline, the pure water pipeline and the raw water pipeline extend along the length direction of the filter element;
wherein the side wall of the membrane element body is provided with a pure water inlet which is communicated with the raw water flow path and the pure water pipeline, and a wastewater inlet which is communicated with the raw water flow path and the wastewater pipeline; the membrane element body specifically comprises a central tube group, a plurality of reverse osmosis membrane groups and two sealing adhesive layers; the central pipe group comprises a pure water pipe and a plurality of waste water pipes which are arranged at intervals, the pure water pipe is internally provided with the pure water pipeline, and the waste water pipe is internally provided with the waste water pipeline; a plurality of the reverse osmosis membrane groups are respectively provided with a first part positioned inside the central pipe group and a second part positioned outside the central pipe group, the first part separates the waste water pipe from the pure water pipe, and the second part forms a multilayer film structure around the periphery of the central pipe group; the two sealing glue layers are respectively arranged at two ends of the plurality of reverse osmosis membrane groups in the length direction of the central tube group and are adhered with the plurality of reverse osmosis membrane groups;
each reverse osmosis membrane group comprises a reverse osmosis membrane, a water inlet diversion net and a pure water diversion net; the water inlet flow guide net and the pure water flow guide net are respectively arranged on the front surface and the back surface of the reverse osmosis membrane, and the pure water flow guide net is positioned in the first part and surrounds the pure water pipe.
2. The filter element of claim 1, wherein the housing comprises a shell and a cover which are fastened with each other, and the cover is provided with a raw water inlet, a waste water outlet and a pure water outlet; a first sleeve communicated with the pure water outlet and a second sleeve surrounding the first sleeve and communicated with the wastewater outlet are convexly arranged on the inner side of the cover body;
the reverse osmosis membrane element also comprises a first end cover, the first end cover is arranged at one end of the membrane element body, and the first end cover is provided with a wastewater discharge port communicated with the wastewater pipeline and a pure water joint communicated with the pure water pipeline;
the waterway converter is buckled with the first end cover and is provided with an inner cavity communicated with the wastewater outlet, the first sleeve is hermetically sleeved with the pure water joint, and the second sleeve is hermetically sleeved with the waterway converter.
3. The filter element of claim 2, wherein a plurality of first inlet tubes project from the inside of said first end cap corresponding to a plurality of said waste tubes, said first inlet tubes projecting into corresponding ones of said waste tubes and communicating between said waste outlet and corresponding ones of said waste tubes;
and a second extension pipe is convexly arranged on the inner side of the first end cover corresponding to the position of the pure water pipe, extends into the pure water pipe and is communicated with the pure water joint and the pure water pipe.
4. The filter element of claim 2, wherein the reverse osmosis membrane element further comprises a second end cap, the second end cap is arranged at the other end of the membrane element body, and the first end cap and the second end cap are respectively fixed with the corresponding sealant layer in an adhesion manner.
5. The filter element of claim 4, wherein a plurality of first positioning projections corresponding to a plurality of said waste pipes are projected from the inner side of said second end cap, said first positioning projections projecting into corresponding said waste pipes;
and the inner side of the second end cover is convexly provided with a second positioning bulge corresponding to the position of the pure water pipe, and the second positioning bulge extends into the pure water pipe.
6. The filter element as claimed in any one of claims 2 to 5, wherein the joint of the pure water joint and the first sleeve is provided with at least one first annular groove, and a first sealing ring is embedded in the first annular groove.
7. The filter element as claimed in any one of claims 2 to 5, wherein at least one second annular groove is formed at the joint of the waterway converter and the first sleeve, and a second sealing ring is embedded in the second annular groove.
8. The filter element of any one of claims 1 to 5 wherein the reverse osmosis membranes of each of said sets are folded inwardly with their front faces, and wherein second portions of said sets of reverse osmosis membranes are folded and collectively circumferentially wrapped around said central tube set; a water inlet flow passage is formed between the interlayers on the front sides of the same reverse osmosis membrane; a water production flow channel is formed between the reverse side interlayers of two adjacent reverse osmosis membranes; the water inlet flow guide net and the waste water pipe are positioned in the water inlet flow passage, and the pure water flow guide net is positioned in the water production flow passage.
9. The filter element of claim 8 wherein the feed water flow directing mesh of each ro membrane module is not in contact with the plain water pipe and the reverse side of the ro membrane modules of the other ro membrane modules.
10. The filter element of claim 8 wherein the pure water flow directing network of each reverse osmosis membrane module is not in contact with the front face of the waste pipe and the reverse osmosis membrane modules of the other reverse osmosis membrane modules.
11. The filter element according to any one of claims 1 to 5, wherein the plain water pipe has a cross section of an N-sided polygon, wherein N is 3 or more, and has N side surfaces, each of which is provided with the plain water inlet;
the number of the waste pipes is matched with the number of the side surfaces, and each waste pipe is arranged to face one side surface.
12. The filter element according to any one of claims 1 to 5, characterized in that the plain water pipe is circular in cross section, the circumferential wall of the plain water pipe is divided into a plurality of arc-shaped sections along the circumferential direction, and each arc-shaped section is provided with the plain water inlet;
the number of the waste water pipes is matched with the number of the cambered surface sections, and each waste water pipe faces one cambered surface section.
13. The filter element according to any one of claims 1 to 5, wherein a waste water guide groove is formed on the peripheral wall of the waste water pipe, and the waste water inlet is arranged in the waste water guide groove.
14. A reverse osmosis water purifier comprising the filter cartridge according to any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110011468.0A CN112755786A (en) | 2016-10-26 | 2016-10-26 | Filter core and reverse osmosis water purifier |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610951781.1A CN107986393B (en) | 2016-10-26 | 2016-10-26 | Filter core and reverse osmosis water purifier |
| CN202110011468.0A CN112755786A (en) | 2016-10-26 | 2016-10-26 | Filter core and reverse osmosis water purifier |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610951781.1A Division CN107986393B (en) | 2016-10-26 | 2016-10-26 | Filter core and reverse osmosis water purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112755786A true CN112755786A (en) | 2021-05-07 |
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Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110011468.0A Pending CN112755786A (en) | 2016-10-26 | 2016-10-26 | Filter core and reverse osmosis water purifier |
| CN201610951781.1A Active CN107986393B (en) | 2016-10-26 | 2016-10-26 | Filter core and reverse osmosis water purifier |
| CN202110011621.XA Withdrawn CN112811517A (en) | 2016-10-26 | 2016-10-26 | Reverse osmosis membrane element, filter element and reverse osmosis water purifier |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610951781.1A Active CN107986393B (en) | 2016-10-26 | 2016-10-26 | Filter core and reverse osmosis water purifier |
| CN202110011621.XA Withdrawn CN112811517A (en) | 2016-10-26 | 2016-10-26 | Reverse osmosis membrane element, filter element and reverse osmosis water purifier |
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| CN (3) | CN112755786A (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111115866B (en) * | 2018-10-31 | 2024-08-13 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element assembly |
| CN111115864B (en) * | 2018-10-31 | 2024-10-01 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element assembly |
| CN111115878A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system |
| CN111115867A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Water purifier |
| CN111115875A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element |
| CN111115876B (en) * | 2018-10-31 | 2024-09-03 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element assembly |
| CN111115877A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element |
| CN111115869A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element assembly |
| CN111115874A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element assembly |
| CN111115868A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Flow passage structure of composite filter element assembly |
| CN111115865A (en) * | 2018-10-31 | 2020-05-08 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element assembly |
| CN111115879B (en) * | 2018-10-31 | 2024-10-15 | 佛山市顺德区美的饮水机制造有限公司 | Water purification system |
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| CN105944571A (en) * | 2016-06-24 | 2016-09-21 | 佛山市顺德区盈沣泰环保科技有限公司 | Lateral flow type water purification and filtration device |
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2016
- 2016-10-26 CN CN202110011468.0A patent/CN112755786A/en active Pending
- 2016-10-26 CN CN201610951781.1A patent/CN107986393B/en active Active
- 2016-10-26 CN CN202110011621.XA patent/CN112811517A/en not_active Withdrawn
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| WO2010116479A1 (en) * | 2009-03-30 | 2010-10-14 | Kawakami Yoichi | Anti-backflow valve device for reverse osmosis membrane-treated water |
| CN203904090U (en) * | 2014-05-27 | 2014-10-29 | 佛山市顺德区美的饮水机制造有限公司 | Compound reverse osmosis filter element and purifier adopting same |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107986393A (en) | 2018-05-04 |
| CN107986393B (en) | 2021-01-26 |
| CN112811517A (en) | 2021-05-18 |
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Application publication date: 20210507 |