CN114345132A - Compound filter element group spare and water purification system - Google Patents
Compound filter element group spare and water purification system Download PDFInfo
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- CN114345132A CN114345132A CN202210080925.6A CN202210080925A CN114345132A CN 114345132 A CN114345132 A CN 114345132A CN 202210080925 A CN202210080925 A CN 202210080925A CN 114345132 A CN114345132 A CN 114345132A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 205
- 238000000746 purification Methods 0.000 title claims abstract description 15
- 150000001875 compounds Chemical class 0.000 title description 2
- 239000012528 membrane Substances 0.000 claims abstract description 223
- 238000001914 filtration Methods 0.000 claims abstract description 80
- 239000002351 wastewater Substances 0.000 claims abstract description 73
- 239000012510 hollow fiber Substances 0.000 claims abstract description 63
- 239000002131 composite material Substances 0.000 claims abstract description 29
- 230000008676 import Effects 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims description 36
- 238000001728 nano-filtration Methods 0.000 claims description 28
- 238000001223 reverse osmosis Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 17
- 239000011258 core-shell material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 10
- 238000000108 ultra-filtration Methods 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000003292 glue Substances 0.000 description 10
- 230000004907 flux Effects 0.000 description 9
- 238000009434 installation Methods 0.000 description 8
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- 238000002955 isolation Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
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- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
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Abstract
The invention provides a composite filter element assembly and a water purification system, wherein the composite filter element assembly comprises: raw water inlet, produce the water export, the waste water export, first filter core and second filter core, first filter core includes first hollow fiber filtration membrane silk, the second filter core includes second hollow fiber filtration membrane silk, the second filter core is located the axial one end of first filter core, the hydroenergy that raw water import got into can filter through first filter core, and get into the inside of first hollow fiber filtration membrane silk and finally derive through producing the water export when filtering, the hydroenergy that does not get into the inside of first filter core can filter through the second filter core, and get into the inside of second hollow fiber filtration membrane silk and finally derive through producing the water export when filtering, the hydroenergy that does not get into the inside of second filter core can communicate and derive with the waste water export. The invention has high filtering precision, reduces scaling risk and can improve the recovery and utilization rate of wastewater compared with the traditional ultrafiltration filter core technology.
Description
Technical Field
The invention belongs to the technical field of water purification, and particularly relates to a composite filter element assembly and a water purification system.
Background
With the increasing demand of the nation for good life, the demand of the nation for drinking water quality is higher and higher. The household drinking water is mainly supplied by municipal pipe network in a centralized way, and the water pollution is mainly caused by water supply pipe network and incomplete early municipal treatment.
The filter element used by the current household water purifier is mainly divided into an ultrafiltration filter element, a nanofiltration filter element and a reverse osmosis filter element according to the filtration precision. The nanofiltration filter core is more and more popular with consumers in the market due to the characteristics of low operation pressure, large pure water flux, low operation cost and the like. At present, the nanofiltration membrane used in the field of water treatment mostly adopts a pressure filtration mode, and the nanofiltration membrane has the following forms: the spiral-wound nanofiltration membrane, the hollow fiber nanofiltration membrane, the plate-frame nanofiltration membrane and the like are used in the actual use process, a plurality of nanofiltration membrane components are required to be connected in series and in parallel for improving the treatment capacity, the occupied area is large, and the method is not suitable for the use scene of the household water purifier.
Through the analysis, if a filter element assembly with high filtering precision and large water production flux can be developed, the requirement of purifying water quality of a user can be met, the problem of complex operation of replacing the filter element can be solved, and the filter element treatment efficiency is high compared with the filter element treatment efficiency on the market. Therefore, the method has certain advantages in both technology and application prospect.
Because the traditional filter element assembly in the prior art cannot simultaneously meet the technical problems of high filtering precision, low operation cost, large water production flux, convenience in installation and the like, the invention researches and designs the composite filter element assembly and the water purification system.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects that the traditional filter element assembly in the prior art cannot simultaneously meet the requirements of high filtering precision, low operation cost, large water production flux and convenience in installation, thereby providing the composite filter element assembly and the water purification system.
The present invention provides a composite filter element assembly comprising:
the water-saving filter comprises a raw water inlet, a water production outlet, a wastewater outlet, a first filter element and a second filter element, wherein the first filter element comprises a first hollow fiber filtering membrane wire, the second filter element comprises a second hollow fiber filtering membrane wire, the second filter element is positioned at one axial end of the first filter element, the water entering from the raw water inlet can be filtered by the first filter element, and enters the inside of the first hollow fiber filtering membrane wire during filtering and is finally led out through the water production outlet, the water not entering the inside of the first filter element can be filtered by the second filter element, enters the inside of the second hollow fiber filtering membrane wire during filtering and is finally led out through the water production outlet, and the water not entering the inside of the second filter element can be communicated with the wastewater outlet and is led out;
still include filter core shell and top end cover, produce the water export with the waste water export all sets up the axial first end of filter core shell, the top end cover with the axial second end of filter core shell meets, the raw water import for set up in through-hole on the top end cover to can be with raw water leading-in extremely the inside of filter core shell.
In some embodiments, still include first section filter core membrane shell and second section filter core membrane shell, first section filter core membrane shell with second section filter core membrane shell all set up in the filter core shell, second section filter core membrane shell set up in the axial one end of first section filter core membrane shell, just the inside of second section filter core membrane shell sets up the second filter core, first filter core is located the axial one end of second section filter core membrane shell, first filter core is located the axial other end of first section filter core membrane shell.
In some embodiments, the cartridge housing is a cylindrical configuration, the first hollow fiber filtration membrane filaments are in a U-shaped configuration with straight edges extending in an axial direction of the cartridge housing, and the second hollow fiber filtration membrane filaments are in a U-shaped configuration with straight edges extending in the axial direction of the cartridge housing; the first hollow fiber filtering membrane filaments are multiple and are arranged at intervals along the radial direction and the circumferential direction of the filter element shell; the second hollow fiber filtering membrane filaments are multiple and are arranged at intervals along the radial direction and the circumferential direction of the filter element shell.
In some embodiments, a side of the top end cap facing the filter element housing is provided with a first channel, the inside of the filter element housing is formed into a first cavity, the first filter element is located in the first cavity, the raw water inlet is communicated with one end of the first channel, and the other end of the first channel is communicated with the first cavity, so that water can be guided into the first filter element for filtering.
In some embodiments, the second section of the filter element membrane shell forms a second cavity inside, the second filter element is positioned in the second cavity, the first section of the filter element membrane shell is axially provided with at least one first section of waste water outlet penetrating through the inner wall and the outer wall of the first section of the filter element membrane shell, and water in the first cavity can enter the second cavity through the first section of the waste water outlet.
In some embodiments, still include first section filter core end cover, the axial one end of first filter core is connected and is provided with first bonding portion, the periphery cover of first bonding portion is established first section filter core membrane shell, the periphery of first section filter core membrane shell with sealing connection between the first section filter core end cover, first bonding portion with first section filter core end cover forms on the axial direction the second passageway, through water after first filter core (1) filters gets into in the second passageway.
In some embodiments, a second section of filter element end cover is further arranged at one axial end of the second section of filter element membrane shell, a third channel is further arranged between the second section of filter element membrane shell and the second section of filter element end cover, water filtered by the second filter element enters the third channel, and the second channel is communicated with the third channel and then can discharge the filtered water through the water production outlet.
In some embodiments, the axially opposite end of the first filter element is formed as an elbow portion of a U-shaped tube.
In some embodiments, the axial one end of second filter core is connected and is provided with the third portion of bonding, the outer periphery cover of third portion of bonding is established second section filter core membrane shell, the interior week of third portion of bonding is worn to establish communicating pipe, process the inside water of straining of second filter core can pass through behind the third portion of bonding get into in the third passageway.
In some embodiments, the water purifier further comprises a filter element end cover, wherein the filter element end cover is arranged on the periphery of the second section of filter element membrane shell, a second section of wastewater outlet is formed in the second section of filter element membrane shell in a penetrating mode along the axial direction, a fourth channel is formed between the filter element end cover and the second section of filter element end cover, one end of the fourth channel is communicated with the wastewater outlet, and the other end of the fourth channel can be communicated with the second cavity, so that water which does not enter the second filter element can enter the fourth channel through the second section of wastewater outlet, and then the water is discharged through the wastewater outlet.
In some embodiments, the second segment of the filter cartridge membrane shell is sealingly connected between the outer periphery thereof and the second segment of the filter cartridge end cap, and the axially opposite end of the second filter cartridge is formed as an elbow portion of a U-shaped tube.
In some embodiments, the waste water outlet is located radially outward of the water production outlet; and/or the presence of a gas in the gas,
the first hollow fiber filtration membrane filaments are hollow fiber nanofiltration membrane filaments or hollow reverse osmosis membrane filaments.
The invention also provides a water purification system comprising the composite filter element assembly as described in any one of the preceding claims.
The composite filter element assembly and the water purification system provided by the invention have the following beneficial effects:
according to the invention, the first filter element and the second component are arranged, the second filter element comprises the second hollow fiber filtering membrane wire, the second filter element is positioned at one axial end of the first filter element, water entering from the raw water inlet can be filtered by the first filter element, enters the first hollow fiber filtering membrane wire during filtering and is finally led out through the water production outlet, the fiber filtering membrane wires are radially arranged together, the condition of gluing on the membrane does not exist, and the radial filling density can be designed according to specific application, so that the effective membrane area is increased; compared with the traditional filter element, the hollow fiber nanofiltration or reverse osmosis technology 1) adopted in the technical scheme has high filtration precision, and compared with the traditional ultrafiltration filter element technology, the technical scheme has good separation effect on divalent and high-valence salts and small molecular organic matters, can improve the filtration precision and reduce scaling risk; 2) the area of the filter element membrane is effectively increased, the hollow fiber nanofiltration or reverse osmosis technology adopted by the technical scheme can effectively utilize space, increase the membrane area and improve the water quality purification effect; 3) the operation pressure is small, the operation cost is low, the hollow fiber nanofiltration technology adopted by the technical scheme is that under the action of pressure difference, salt and small molecular substances permeate the nanofiltration membrane, and the operation pressure is lower than that of a reverse osmosis filter element; 4) the formation of the first-stage and second-stage filtering structure can also improve the recycling rate of the wastewater.
Drawings
FIG. 1 is a cross-sectional structural view of a composite filter element assembly of the present invention;
FIG. 2 is an assembled block diagram of the first segment cartridge membrane shell and first cartridge of FIG. 1;
FIG. 3 is an assembled block diagram of a second segment cartridge membrane shell and a second cartridge of FIG. 1;
fig. 4 is an assembled block diagram of the cartridge housing and top end cap of fig. 1.
The reference numbers in the figures denote:
100. a raw water inlet; 200. a water production outlet; 300. a waste water outlet; 1. a first filter element; 2. a second filter element; 3. a filter element housing; 4. a first section of filter element membrane shell; 5. a second section of filter element membrane shell; 51. a first stage wastewater outlet; 52. a second section wastewater outlet; 6. a first channel; 7. a first cavity; 8. a second cavity; 9. a second channel; 10. a third channel; 11. a communicating pipe; 12. a first bonding portion; 13a, a first section of filter element end cover; 13b, a second section of filter element end cover; 14. a top end cap; 15. a third filter element end cap; 16. a third bonding portion; 17. a fourth channel; 18. a first seal member; 19. and (5) sealing by using glue.
Detailed Description
As shown in fig. 1-4, the present invention provides a composite filter element assembly comprising:
the water filter comprises a raw water inlet 100, a water production outlet 200, a wastewater outlet 300, a first filter element 1 and a second filter element 2, wherein the first filter element 1 comprises a first hollow fiber filtering membrane wire, the second filter element 2 comprises a second hollow fiber filtering membrane wire, the second filter element 2 is positioned at one axial end of the first filter element 1, water entering from the raw water inlet 100 can be filtered by the first filter element 1, enters the first hollow fiber filtering membrane wire during filtering and is finally led out through the water production outlet 200, water which does not enter the first filter element 1 can be filtered by the second filter element 2, enters the second hollow fiber filtering membrane wire during filtering and is finally led out through the water production outlet 200, and water which does not enter the second filter element 2 can be communicated with and led out from the wastewater outlet 300;
still include filter core shell 3 and top end cover 14, produce water export 200 with waste water outlet 300 all sets up the axial first end of filter core shell 3, top end cover 14 with the axial second end of filter core shell 3 meets, raw water import 100 for set up in through-hole on the top end cover 14 to can be with raw water leading-in extremely the inside of filter core shell 3.
According to the invention, the first filter element and the second component are arranged, the second filter element comprises a second hollow fiber filtering membrane wire, the second filter element is positioned at one axial end of the first filter element, water entering from the raw water inlet can be filtered by the first filter element, enters the first hollow fiber filtering membrane wire during filtering and is finally led out through the water production outlet, water not entering the first filter element 1 can be filtered by the second filter element 2, enters the second hollow fiber filtering membrane wire during filtering and is finally led out through the water production outlet 200, and the fiber filtering membrane wires are radially arranged together, so that the condition of gluing on the membrane does not exist, and the density of radial filling can be designed according to specific application, so that the effective area is improved; compared with the traditional filter element, the hollow fiber nanofiltration or reverse osmosis technology 1) adopted in the technical scheme has high filtration precision, and compared with the traditional ultrafiltration filter element technology, the technical scheme has good separation effect on divalent and high-valence salts and small molecular organic matters, can improve the filtration precision and reduce scaling risk; 2) the area of the filter element membrane is effectively increased, the hollow fiber nanofiltration or reverse osmosis technology adopted by the technical scheme can effectively utilize space, increase the membrane area and improve the water quality purification effect; 3) the operation pressure is small, the operation cost is low, the hollow fiber nanofiltration technology adopted by the technical scheme is that under the action of pressure difference, salt and small molecular substances permeate the nanofiltration membrane, and the operation pressure is lower than that of a reverse osmosis filter element; 4) the formation of the first-stage and second-stage filtering structure can also improve the recycling rate of the wastewater.
Aiming at the problems that the traditional filter element assembly cannot simultaneously meet the requirements of high filtering precision, low operation cost, large water production flux and convenience in installation, the invention provides a technical scheme of the filter element assembly with high filtering precision and large water production flux, which can effectively solve the problem of convenience in installation and specifically comprises the following steps:
1. the traditional ultrafiltration filter core has low filtration precision and is easy to scale;
2. the traditional reverse osmosis filter element has high operation pressure and small effective membrane area;
3. the traditional nanofiltration filter core has low space utilization rate and low water production flux.
The solution to these several problems can improve the flux of produced water, improve the utilization ratio of the membrane surface, improve the water quality purification effect, and avoid the situation of difficult installation.
According to the invention, the first-stage two-section filtration (RO filter element) is realized by the hollow membrane wire, and the recovery rate is improved, and the hollow membrane wire plus the first-stage two-section structure solves the problem that the recovery rate of the produced water can be improved while the accuracy is improved.
Different from the traditional filter element assembly, the invention provides a hollow fiber nanofiltration or reverse osmosis (which is arranged in the upper position to a hollow fiber filtration membrane wire and comprises nanofiltration and reverse osmosis) one-stage two-section type composite filter element assembly which is radially arranged, has large effective membrane area, high filtration precision and large water production flux, can meet the requirement of a user on water purification, can solve the problem of complex core replacement operation, and improves the treatment efficiency of the filter element. Different from the traditional filter element assembly, the invention utilizes hollow fiber nanofiltration or reverse osmosis membrane filaments to form a two-section type filter element structure, thereby improving the membrane surface utilization rate, and simplifying the installation operation of the filter element by designing the water inlet, the water outlet and the concentrated water outlet at the same end. The hollow fiber nano-filter or reverse osmosis is a hollow filamentous structure, filtered water can enter the hollow interior, and water which cannot enter the hollow interior is concentrated water or waste water containing high impurities. .
In some embodiments, the filter further comprises a first section filter element membrane shell 4 and a second section filter element membrane shell 5, wherein the first section filter element membrane shell 4 and the second section filter element membrane shell 5 are both arranged in the filter element shell 3, the second section filter element membrane shell 5 is arranged at one axial end of the first section filter element membrane shell 4, the second section filter element membrane shell 5 is arranged inside the second section filter element membrane shell 5, the first filter element 1 is arranged at one axial end of the second section filter element membrane shell 5, and the first filter element 1 is arranged at one axial side of the first section filter element membrane shell 4. The composite filter element is a preferred structural form, the shape of the shell can be limited through the filter element shell, a first section of filter element membrane shell and a second section of filter element membrane shell are arranged in the shell, the second section of filter element membrane shell is used for limiting a second filter element, the first filter element is positioned above the second section of filter element membrane shell in the axial direction, so that the first filter element and the second filter element are arranged up and down in the axial direction, water is filtered by the first filter element above the shaft and is sent out from a water production outlet, and water which does not enter the first filter element reaches the second filter element for filtering, so that a one-stage two-section filtering structural form is formed, and the utilization efficiency and the recovery efficiency of waste water are improved.
In some embodiments, the cartridge housing 3 is a cylindrical structure, the first hollow fiber filtration membrane filaments are in a U-shaped configuration with straight sides extending along the axial direction of the cartridge housing 3, and the second hollow fiber filtration membrane filaments are in a U-shaped configuration with straight sides extending along the axial direction of the cartridge housing 3; the first hollow fiber filtering membrane filaments are multiple and are arranged at intervals along the radial direction and the circumferential direction of the filter element shell 3; the second hollow fiber filtering membrane filaments are a plurality of and are arranged at intervals along the radial direction and the circumferential direction of the filter element shell 3. The filter element shell is a preferred structure form of the filter element shell, and the first hollow fiber filtering membrane wire and the second hollow fiber filtering membrane wire extend along the axial direction, and the first hollow fiber filtering membrane wire and the second hollow fiber filtering membrane wire are arranged at intervals, so that the contact area with water can be effectively increased in the space direction, the membrane area is increased, and the filtering effect is improved.
In some embodiments, the side of the top end cap 14 facing the filter element housing 3 is provided with a first channel 6, the inside of the filter element housing 3 is formed into a first cavity 7, the first filter element 1 is located in the first cavity 7, the raw water inlet 100 is communicated with one end of the first channel 6, and the other end of the first channel 6 is communicated with the first cavity 7, so that water can be introduced into the first filter element 1 for filtering. The water purifier also can guide raw water into the first filter element through the first cavity for filtering through the first channel on one side of the top end cover facing the filter element shell, and pure water partially enters the hollow interior of the first filter element, and wastewater which cannot enter the hollow interior of the first filter element is wastewater which further enters the second filter element for filtering, so that the wastewater utilization rate is improved.
In some embodiments, the second section of the filter cartridge membrane shell 5 forms a second cavity 8 inside, the second filter cartridge 2 is located in the second cavity 8, the first section of the filter cartridge membrane shell 4 is formed with at least one first section waste water outlet 51 penetrating through the inner wall and the outer wall thereof along the axial direction, and water in the first cavity 7 can enter the second cavity 8 through the first section waste water outlet 51. The waste water filtered from the first filter element can be guided into the second cavity through the second cavity in the second section of filter element membrane shell and enters the second cavity through the first section of waste water outlet, and then is filtered at the second filter element, so that the utilization efficiency of the waste water is improved.
In some embodiments, still include first section filter core end cover 13a, the axial one end of first filter core 1 is connected and is provided with first bonding portion 12, the periphery cover of first bonding portion 12 is established first section filter core membrane shell 4, the periphery of first section filter core membrane shell 4 with sealing connection between first section filter core end cover 13a, first bonding portion 12 with first section filter core end cover 13a forms on the axial direction second passageway 9, through the water after first filter core 1 filters gets into in the second passageway 9. The pure water filtered out from the first filter element can be guided into the second channel through the second channel between the axial end of the first filter element and the end cover of the first section of the filter element, and then is guided out through the water production outlet. In some embodiments, a first bonding portion 12 is connected to one axial end of the first filter element 1, a first filter element membrane shell 4 is sleeved on the outer periphery of the first bonding portion 12, the outer periphery of the first filter element membrane shell 4 is connected with the first filter element end cover 13a in a sealing manner, and the first bonding portion 12 and the first filter element end cover 13a form the second channel 9 in the axial direction. The first filter element end cover is positioned below the first section of filter element membrane shell in the axial direction, the first section of filter element end cover is connected with the first section of filter element membrane shell in a sealing mode, and the sealing ring is arranged, so that the first filter element is fixed at one end of the first filter element in the axial direction, and water can pass through the first bonding part.
In some embodiments, a second-stage filter element end cap 13b is further disposed at one axial end of the second-stage filter element membrane shell 5, a third channel 10 is further disposed between the second-stage filter element membrane shell 5 and the second-stage filter element end cap 13b, water filtered by the second filter element 2 enters the third channel 10, and the second channel 9 and the third channel 10 are communicated and then the filtered water can be discharged through the water production outlet 200. According to the invention, through the arrangement of the second section of filter element end cover, a third channel is formed between the second section of filter element end cover and the second section of filter element membrane shell, and the water filtered by the second filter element can be led out to a water producing port through the third channel, so that the effect of leading out the pure water filtered by the second filter element is realized.
In some embodiments, a communication pipe 11 is disposed in the second cavity 8 and on the radially inner side of the second filter element 2, one end of the communication pipe 11 is communicated with the produced water outlet 200, and the other end is communicated with the second channel 9, so that water entering the first filter element 1 can be discharged through the produced water outlet 200 via the communication pipe 11.
The filter element shell is provided with a water outlet in the axial direction, and the communicating pipe is arranged in the second section of filter element membrane shell and is positioned on the radial inner side of the second filter element, so that the water in the radial inner side of the second filter element in the second cavity can be led out to the water outlet through the communicating pipe, and the filtered pure water can be effectively led out.
In some embodiments, the axially other end of the first filter cartridge 1 is formed as an elbow portion of a U-shaped pipe.
In some embodiments, the axial one end of the second filter element 2 is provided with a third bonding portion 16 in a connecting manner, the second section of filter element membrane shell 5 is sleeved on the outer periphery of the third bonding portion 16, the communicating pipe 11 is penetrated by the inner periphery of the third bonding portion 16, and water filtered out from the inside of the second filter element 2 can enter the third channel 10 after passing through the third bonding portion 16. The axial end of the second filter element can be fixed through the third bonding part arranged at the axial end of the second filter element, the communicating pipe penetrates through the third bonding part, and pure water filtered out from the interior of the second filter element can penetrate through the third bonding part to enter the third channel and be discharged.
In some embodiments, the water filter further comprises a third filter element end cover 15, the third filter element end cover 15 is sleeved on the periphery of the second filter element membrane shell 5, a second section of wastewater outlet 52 is formed in the second filter element membrane shell 5 in a penetrating manner along the axial direction, a fourth channel 17 is formed between the third filter element end cover 15 and the second section of filter element end cover 13b, one end of the fourth channel 17 is communicated with the wastewater outlet 300, and the other end of the fourth channel can be communicated with the second cavity 8, so that water which does not enter the second filter element 2 can enter the fourth channel 17 through the second section of wastewater outlet 52 and then be discharged through the wastewater outlet 300. According to the invention, a fourth channel can be formed between the third filter element end cover and the second section of filter element membrane shell, and the fourth channel can be communicated with the second cavity through the second section of wastewater outlet, so that the water of the wastewater which is not fed into the second filter element in the second cavity and filtered out is guided into the fourth channel and guided out to the wastewater outlet 300.
In some embodiments, the second segment cartridge membrane housing 5 is sealingly connected between its outer periphery and the second segment cartridge end cap 13b (via a first seal member 18), and the axially opposite end of the second cartridge 2 is formed as an elbow portion of a U-shaped tube.
In some embodiments, the waste water outlet 300 is located radially outward of the water production outlet 200; and/or the first hollow fiber filtration membrane filaments are hollow fiber nanofiltration membrane filaments or hollow reverse osmosis membrane filaments.
The invention also provides a water purification system comprising the composite filter element assembly as described in any one of the preceding claims.
Fig. 1 is a cross-sectional view of a cartridge assembly, fig. 2 is an assembly view of a first cartridge, fig. 3 is an assembly view of a second cartridge, and fig. 4 is an assembly view of a cartridge membrane shell and end cap. As shown in the figure, the filter element assembly comprises a filter element membrane shell (namely a filter element shell 3), a top end cover, a third filter element end cover, a first filter element and a second filter element, wherein the first filter element comprises a first section of filter element membrane shell, a first section of filter element end cover and a first membrane bundle (preferably a first hollow fiber filter membrane filament), the second filter element comprises a second section of filter element membrane shell and a second membrane bundle (preferably a second hollow fiber filter membrane filament), the first membrane bundle and the second membrane bundle are respectively composed of a plurality of hollow fiber nanofiltration membrane filaments or reverse osmosis membrane filaments, the area ratio of the two membrane filaments is 1.5-2.5: 1, the filter element membrane shell is used for filling the membrane filaments, the first section of filter element membrane shell is used for fixing the first membrane bundle and conducting diversion of raw water and first section of waste water, the first section of filter element end cover is used for forming a water production cavity with the first membrane bundle and separating water and waste water, the second section of filter element shell is used for fixing the second membrane bundle and separating the first section of water and the second membrane bundle, the second section of filter element end cover is used for forming a water producing cavity with the second membrane bundle and separating water and wastewater, the top end cover is used for forming a sealing cavity with the filter element membrane shell, and the filter element end cover is used for separating raw water and wastewater.
The components are described in the order of assembly of the filter cartridge, with the second cartridge described below:
1. the first section of filter element membrane shell is divided into a side surface, a bottom surface and an interface surface, the side surface is provided with a plurality of through holes which are communicated with raw water (namely a first section of raw water outlet), the through holes are arranged at the upper positions to facilitate air exhaust, and the number and the specification of the through holes can be designed according to specific filter element components; the bottom surface of the first section of filter element membrane shell is provided with a through hole communicated with the second filter element, wastewater generated by the first filter element is taken as raw water of the second filter element, so that a first section of concentrated water outlet is also called as a second section of raw water inlet, a first section of filter element membrane shell interface surface is used for fixing the first membrane bundle and forming a water production cavity, a groove is reserved outside the interface surface of the first section of filter element membrane shell, a sealing ring is sleeved during installation, isolation of wastewater and produced water is facilitated, and water production purity is guaranteed.
2. The bottom end of the first membrane bundle is a water production end face, all hollow fiber nanofiltration or reverse osmosis membrane filaments of the first membrane bundle are U-shaped, and the bent end does not need to be poured by adopting the U-shaped structure, so that the effective membrane area is increased; all membrane filaments are bent into a U shape, the head ends and the tail ends of the membrane filaments are positioned on the interface surface of the first section of the filter element membrane shell and are poured into membrane filament bundles by using hard glue, and membrane holes are reserved on the end surfaces of the hard glue and used for producing water and yielding water. The pouring layer can be poured by epoxy resin, so that the membrane filaments are more uniformly distributed, the epoxy resin has good adhesion and high bonding strength, and can bear higher pressure.
3. The first section of filter element end cover is divided into a first section of filter element membrane shell contact surface and a second section of filter element membrane shell contact surface and is used for separating first section wastewater and first section produced water.
The second cartridge is assembled as follows:
1. the second section of filter element membrane shell is divided into a side surface, a bottom surface, a central surface and a mouth surface, wherein the side surface is used for separating raw water; the bottom surface is provided with a through hole for discharging waste water; the central plane is used for separating the first section of produced water from the second filter element and conducting diversion of the first section of produced water, a groove is reserved at the upper end of the central plane, a sealing ring is sleeved in the groove during installation, the first filter element is fixed when the central plane is connected with the end cover of the first section of filter element, and the produced water is ensured to be isolated from the second filter element; the interface surface is used for fixing the second membrane bundle and forming a water producing cavity, a groove is reserved on the outer side of the interface surface, and a sealing ring is sleeved in the mounting process, so that the isolation of waste water and produced water is facilitated, and the purity of the produced water is ensured.
2. The bottom end of the second membrane bundle is a water production end face, all hollow fiber nanofiltration or reverse osmosis membrane filaments of the second membrane bundle are U-shaped, and the bent end does not need to be poured by adopting the U-shaped structure, so that the effective membrane area is increased; all membrane filaments are bent into a U shape, the head ends and the tail ends of the membrane filaments are positioned on the interface surface of the first section of the filter element membrane shell and are poured into membrane filament bundles by using hard glue, and membrane holes are reserved on the end surfaces of the hard glue and used for producing water and yielding water. The pouring layer can be poured by epoxy resin, so that the membrane filaments are more uniformly distributed, the epoxy resin has good adhesion and high bonding strength, and can bear higher pressure.
3. The second section of filter element end cover is divided into a contact surface with a second membrane bundle glue layer, a contact surface with a second section of filter element membrane shell and a flow guide interface, and a water production cavity is formed at the contact surface of the second section of filter element end cover and the second membrane bundle glue layer and separates water production from first section wastewater; a groove is reserved on the outer side of the flow guide interface surface, and a sealing ring is sleeved in the installation process, so that the isolation of waste water and produced water is facilitated, and the purity of the produced water is ensured.
After the first filter element and the second filter element are assembled respectively, the first section of filter element end cover and the second section of filter element membrane shell are assembled together, and the joint of the first section of filter element membrane shell and the second section of filter element membrane shell is sealed by gluing (glue seal 19), so that the raw water can not permeate into the second filter element.
The filter element end cover is divided into a raw water contact surface, a second section wastewater contact surface and a flow guide interface, and the filter element end cover and the second section wastewater contact surface form a wastewater cavity, separate the raw water from the second section wastewater and guide the second section wastewater; a groove is reserved on the outer side of the flow guide interface surface, and a sealing ring is sleeved in the installation process, so that the isolation of raw water and waste water is facilitated, and the purity of the raw water which is not polluted by the waste water is ensured.
The equipment back is accomplished to above inner assembly, with the whole filter core membrane shell that inserts of inner assembly, filter core membrane shell is integrated into one piece formula casing, and the three opening that the concentric circle formula was arranged is designed at bottom center, from inside to outside in proper order for producing water delivery port, waste water outlet, raw water inlet.
The top end cover forms a sealed cavity with the filter element membrane shell through spin-melt sealing or spiral sealing, and the sealing performance of the filter element assembly is guaranteed.
The hollow fiber nanofiltration or reverse osmosis primary two-stage composite filter element operation water path comprises:
raw water enters the filter element through a raw water inlet at the bottom of the filter element, enters the first filter element through a first section raw water outlet arranged on a first section filter element membrane shell, membrane filaments filter the raw water by using pressure difference, and produced water flows into a water production cavity formed by a first section filter element end cover and a first section pure water outlet glue layer through a first membrane bundle bottom opening and then flows out from a bottom produced water outlet through a channel formed in the center of a second section filter element membrane shell; the waste water generated by the first section of filter element is used as raw water of the second section of filter element, the waste water enters the second filter element through a first section of thick water outlet on a first section of filter element membrane shell, the membrane wire purifies the water by using pressure difference, and the produced water enters a water producing cavity formed by a second section of filter element end cover and a second section of pure water outlet glue layer through a second membrane bundle bottom end opening and then flows out through a produced water outlet; and the wastewater is discharged from a wastewater outlet at the bottom of the filter element membrane shell through the diversion of the filter element end cover through a second section concentrated water outlet of the second section filter element membrane shell.
A hollow fiber nanofiltration or reverse osmosis one-stage two-section type composite filter element flushing waterway:
raw water enters the filter element through the raw water inlet, enters the first filter element through the first section raw water outlet arranged on the first section filter element membrane shell, and washes the surface of the membrane wire by utilizing water flow, the washing water flow of the first filter element enters the second filter element through the first section concentrated water outlet on the first section filter element membrane shell, and continuously washes the surface of the membrane wire, and finally the washing water is discharged through the waste water outlet at the bottom of the filter element membrane shell.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (14)
1. A composite filter element assembly, comprising: the method comprises the following steps:
a raw water inlet (100), a produced water outlet (200), a waste water outlet (300), a first filter element (1) and a second filter element (2), the first filter element (1) comprises a first hollow fiber filtering membrane wire, the second filter element (2) comprises a second hollow fiber filtering membrane wire, the second filter element (2) is positioned at one axial end of the first filter element (1), water entering from the raw water inlet (100) can be filtered by the first filter element (1), and enters the inside of the first hollow fiber filtering membrane wire during filtering and is finally led out through the water production outlet (200), water which does not enter the inside of the first filter element (1) can be filtered through the second filter element (2), and enters the inside of the second hollow fiber filtering membrane yarn during filtering and is finally led out through the water production outlet (200), and water which does not enter the inside of the second filter element (2) can be communicated with the wastewater outlet (300) and is led out;
still include filter core shell (3) and top end cover (14), produce water export (200) with waste water outlet (300) all set up the axial first end of filter core shell (3), top end cover (14) with the axial second end of filter core shell (3) meets, raw water import (100) be for set up in through-hole on top end cover (14) to can be with raw water leading-in extremely the inside of filter core shell (3).
2. The composite filter element assembly of claim 1, wherein:
still include first section filter core membrane shell (4) and second section filter core membrane shell (5), first section filter core membrane shell (4) with second section filter core membrane shell (5) all set up in filter core shell (3), second section filter core membrane shell (5) set up in the axial one end of first section filter core membrane shell (4), just the inside of second section filter core membrane shell (5) sets up second filter core (2), first filter core (1) is located the axial one end of second section filter core membrane shell (5), first filter core (1) is located the axial other end of first section filter core membrane shell (4).
3. The composite filter element assembly of claim 2, wherein:
the filter element shell (3) is of a cylindrical structure, the first hollow fiber filtering membrane wire is of a U-shaped structure, the straight edge of the first hollow fiber filtering membrane wire extends along the axial direction of the filter element shell (3), the second hollow fiber filtering membrane wire is of a U-shaped structure, and the straight edge of the second hollow fiber filtering membrane wire extends along the axial direction of the filter element shell (3); the first hollow fiber filtering membrane filaments are multiple and are arranged at intervals along the radial direction and the circumferential direction of the filter element shell (3); the second hollow fiber filtering membrane filaments are multiple and are arranged at intervals along the radial direction and the circumferential direction of the filter element shell (3).
4. The composite filter element assembly of claim 2, wherein:
the orientation of top end cover (14) one side of filter core shell (3) has first passageway (6), the inside of filter core shell (3) forms into first cavity (7), first filter core (1) is located in first cavity (7), raw water import (100) with the one end intercommunication of first passageway (6), the other end of first passageway (6) with first cavity (7) intercommunication is with can be leading-in water first filter core (1) department filters.
5. The composite filter element assembly of claim 4, wherein:
the inside of second section filter core membrane shell (5) forms second cavity (8), second filter core (2) are located in second cavity (8), be formed with at least one first section waste water export (51) along the axial in the mode that runs through its interior outer wall on first section filter core membrane shell (4), water in first cavity (7) can pass through first section waste water export (51) get into in second cavity (8).
6. The composite filter element assembly of claim 5, wherein:
still include first section filter core end cover (13a), the axial one end of first filter core (1) is connected and is provided with first bonding portion (12), the periphery cover of first bonding portion (12) is established first section filter core membrane shell (4), the periphery of first section filter core membrane shell (4) with sealing connection between first section filter core end cover (13a), first bonding portion (12) with first section filter core end cover (13a) forms second passageway (9) on the axial direction, through water after first filter core (1) filters gets into in second passageway (9).
7. The composite filter element assembly of claim 6, wherein:
the axial one end of second section filter core membrane shell (5) still is provided with second section filter core end cover (13b), still have third passageway (10) between second section filter core membrane shell (5) and second section filter core end cover (13b), through water after second filter core (2) filters gets into in third passageway (10), second passageway (9) with third passageway (10) communicate after can pass through produce water outlet (200) and discharge the water after the filtration.
8. The composite filter element assembly of claim 7, wherein:
the part of the second cavity (8) which is located on the radial inner side of the second filter element (2) is provided with a communicating pipe (11), one end of the communicating pipe (11) is communicated with the water production outlet (200), the other end of the communicating pipe is communicated with the second channel (9), and water entering the first filter element (1) can be discharged from the water production outlet (200) through the communicating pipe (11).
9. The composite filter element assembly of claim 8, wherein:
the other axial end of the first filter element (1) is formed into a bent pipe part of a U-shaped pipe.
10. The composite filter element assembly according to any one of claims 8-9, wherein:
the axial one end of second filter core (2) is connected and is provided with third portion of bonding (16), the periphery cover of third portion of bonding (16) is established second section filter core membrane shell (5), the interior week of third portion of bonding (16) is worn to establish communicating pipe (11), process the inside hydroenergy that filters out of second filter core (2) can pass through enter behind third portion of bonding (16) in third passageway (10).
11. The composite filter element assembly of claim 7, wherein:
still include third filter core end cover (15), third filter core end cover (15) cover is established the periphery of second section filter core membrane shell (5), just second section filter core membrane shell (5) are gone up and are run through along the axial and seted up second section waste water outlet (52), third filter core end cover (15) with be formed with fourth passageway (17) between second section filter core end cover (13b), the one end of fourth passageway (17) with waste water outlet (300) intercommunication, the other end can with second cavity (8) intercommunication, make and not get into hydroenergy in second filter core (2) passes through second section waste water outlet (52) get into in fourth passageway (17), and then pass through waste water outlet (300) discharges.
12. The composite filter element assembly of claim 7, wherein:
the periphery of the second section of filter element membrane shell (5) is in sealing connection with the second section of filter element end cover (13b), and the other axial end of the second filter element (2) is formed into a bent pipe part of a U-shaped pipe.
13. The composite filter element assembly according to any one of claims 1-12, wherein:
the waste water outlet (300) is located radially outside the water production outlet (200); and/or the presence of a gas in the gas,
the first hollow fiber filtration membrane filaments are hollow fiber nanofiltration membrane filaments or hollow reverse osmosis membrane filaments.
14. A water purification system, its characterized in that: comprising the composite filter element assembly of any one of claims 1-13.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210080925.6A CN114345132A (en) | 2022-01-24 | 2022-01-24 | Compound filter element group spare and water purification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210080925.6A CN114345132A (en) | 2022-01-24 | 2022-01-24 | Compound filter element group spare and water purification system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200405389Y1 (en) * | 2005-10-10 | 2006-01-10 | 주식회사 피코그램 | Water purifying multi-filter assembly |
| CN112156655A (en) * | 2020-08-06 | 2021-01-01 | 宁波方太厨具有限公司 | Composite filter element structure for water purifier |
| CN114345130A (en) * | 2022-01-24 | 2022-04-15 | 珠海格力电器股份有限公司 | Compound filter element group spare and water purification system |
-
2022
- 2022-01-24 CN CN202210080925.6A patent/CN114345132A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200405389Y1 (en) * | 2005-10-10 | 2006-01-10 | 주식회사 피코그램 | Water purifying multi-filter assembly |
| CN112156655A (en) * | 2020-08-06 | 2021-01-01 | 宁波方太厨具有限公司 | Composite filter element structure for water purifier |
| CN114345130A (en) * | 2022-01-24 | 2022-04-15 | 珠海格力电器股份有限公司 | Compound filter element group spare and water purification system |
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