CN114345132B - Composite filter element assembly and water purification system - Google Patents
Composite filter element assembly and water purification system Download PDFInfo
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- CN114345132B CN114345132B CN202210080925.6A CN202210080925A CN114345132B CN 114345132 B CN114345132 B CN 114345132B CN 202210080925 A CN202210080925 A CN 202210080925A CN 114345132 B CN114345132 B CN 114345132B
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Abstract
The invention provides a composite filter element component and a water purification system, wherein the composite filter element component comprises: raw water inlet, produce water outlet, waste water outlet, 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 the raw water inlet got into can filter through first filter core, and get into the inside of first hollow fiber filtration membrane silk and finally export through producing the water outlet when filtering, the hydroenergy that does not get into the inside of first filter core filters through the second filter core, and get into the inside of second hollow fiber filtration membrane silk and finally export through producing the water outlet when filtering, the hydroenergy that does not get into the inside of second filter core can communicate and export with the waste water outlet. Compared with the traditional ultrafiltration filter core technology, the invention has high filtration precision, reduces the scaling risk and can also improve the recycling rate of wastewater.
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
Along with the increasing demands of the national for good life, the requirements of the national for the quality of drinking water are also increasing. Domestic drinking water is mainly supplied by municipal pipe network in a centralized way, and water pollution is mainly caused by imperfect treatment of the water supply pipe network and the prior municipal administration.
The filter elements used in the current household water purifier are mainly divided into an ultrafiltration filter element, a nanofiltration filter element and a reverse osmosis filter element according to the filtration precision. Due to the characteristics of low operating pressure, high pure water flux, low running cost and the like, nanofiltration filter elements are increasingly popular with consumers in the market. At present, nanofiltration membranes used in the field of water treatment mostly adopt a pressure filtration mode, and the nanofiltration membranes are in the form of: in the practical use process, a plurality of nanofiltration membrane components are required to be connected in series and parallel for improving the processing 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 component with high filtering precision and large water yield flux can be developed, the requirement of a user for purifying water quality can be met simultaneously, the problem of complex core replacement operation can be solved simultaneously, and the treatment efficiency is high compared with that of filter elements on the market. Therefore, the method has certain advantages in technology and application prospect.
Because the traditional filter element component in the prior art can not simultaneously meet the technical problems of high filtering precision, low running cost, large water yield flux, convenient installation and the like, the invention designs the composite filter element component and the water purifying system.
Disclosure of Invention
Therefore, the invention aims to overcome the defects that the traditional filter element assembly in the prior art cannot simultaneously meet the requirements of high filtering precision, low running cost, large water yield and convenient installation, thereby providing the composite filter element assembly and the water purification system.
The present invention provides a composite filter element assembly comprising:
The device comprises a raw water inlet, a water production outlet, a waste water outlet, a first filter element and a second filter element, wherein the first filter element comprises a first hollow fiber filter membrane wire, the second filter element comprises a second hollow fiber filter 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 through the first filter element and enter into the first hollow fiber filter membrane wire and finally be led out through the water production outlet when being filtered, water not entering into the first filter element can be filtered through the second filter element and enter into the second hollow fiber filter membrane wire and finally be led out through the water production outlet when being filtered, and water not entering into the second filter element can be communicated with the waste water outlet and be 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, in order to be able to introduce raw water to the inside of filter core shell.
In some embodiments, the filter further comprises a first section filter element membrane shell and a second section filter element membrane shell, wherein the first section filter element membrane shell and the second section filter element membrane shell are both arranged in the filter element shell, the second section filter element membrane shell is arranged at one axial end of the first section filter element membrane shell, the second filter element is arranged inside the second section filter element membrane shell, the first filter element is arranged at one axial end of the second section filter element membrane shell, and the first filter element is arranged at the other axial end of the first section filter element membrane shell.
In some embodiments, the cartridge housing is a cylindrical structure, the first hollow fiber filtration membrane filaments are in a U-shaped structure with straight edges extending along the axial direction of the cartridge housing, and the second hollow fiber filtration membrane filaments are in a U-shaped structure with straight edges extending along the axial direction of the cartridge housing; the first hollow fiber filtering membrane wires are a plurality of and are distributed at intervals along the radial direction and the circumferential direction of the filter element shell; the second hollow fiber filtering membrane wires are a plurality of and are distributed 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 cartridge housing has a first channel, the interior of the cartridge housing is formed as a first cavity, the first cartridge is located in the first cavity, the raw water inlet communicates with one end of the first channel, and the other end of the first channel communicates with the first cavity to enable water to be introduced into the first cartridge for filtration.
In some embodiments, a second cavity is formed inside the second section of filter element membrane shell, the second filter element is located in the second cavity, at least one first section of waste water outlet is formed on the first section of filter element membrane shell along the axial direction in a manner of penetrating through the inner wall and the outer wall of the first section of filter element membrane shell, and water in the first cavity can enter the second cavity through the first section of waste water outlet.
In some embodiments, the filter further comprises a first section of filter element end cover, a first bonding part is connected and arranged at one axial end of the first filter element, the first section of filter element membrane shell is sleeved on the periphery of the first bonding part, the periphery of the first section of filter element membrane shell is in sealing connection with the first section of filter element end cover, the first bonding part and the first section of filter element end cover form a second channel in the axial direction, and water filtered by the first filter element (1) enters the second channel.
In some embodiments, a second section of filter element end cover is further disposed at one axial end of the second section of filter element membrane shell, a third channel is further disposed 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 drain the filtered water through the produced water outlet.
In some embodiments, the axial other end of the first cartridge is formed as an elbow portion of a U-tube.
In some embodiments, a third bonding portion is connected to one axial end of the second filter element, the second section of filter element membrane shell is sleeved on the outer periphery of the third bonding portion, the communicating pipe is penetrated on the inner periphery of the third bonding portion, and water filtered out from the second filter element passes through the third bonding portion and then enters the third channel.
In some embodiments, the filter element further comprises a filter element end cover, the filter element end cover is sleeved on the periphery of the second section filter element membrane shell, a second section waste water outlet is formed in the second section filter element membrane shell in an axial penetrating mode, a fourth channel is formed between the filter element end cover and the second section filter element end cover, one end of the fourth channel is communicated with the waste water outlet, the other end of the fourth channel is 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 waste water outlet, and then is discharged through the waste water outlet.
In some embodiments, the outer periphery of the second section filter element membrane shell is in sealing connection with the second section filter element end cover, and the axial other end of the second filter element is formed into an elbow part of the U-shaped pipe.
In some embodiments, the wastewater outlet is located radially outward of the produced water outlet; and/or the number of the groups of groups,
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 according to any one of the preceding claims.
The composite filter element component 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 filter 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 through the first filter element and enters the first hollow fiber filter membrane wire during filtration and finally is led out through the water outlet, the fiber filter membrane wires are radially arranged together, the condition of gluing on a membrane is avoided, 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, has good separation effect on bivalent and high-valence salt and micromolecular organic matters, can improve the filtration precision and reduce the scaling risk; 2) The membrane area of the filter element is effectively increased, and the hollow fiber nanofiltration or reverse osmosis technology adopted by the technical scheme can effectively utilize the space, increase the membrane area and improve the water quality purification effect; 3) The operation pressure is low, the operation cost is low, the hollow fiber nanofiltration technology adopted in the technical scheme is that under the action of pressure difference, salt and micromolecular substances penetrate through the nanofiltration membrane, and the operation pressure is lower than that of the reverse osmosis filter element; 4) The filtering structure forming the first-stage two sections can also improve the recycling rate of wastewater.
Drawings
FIG. 1 is a cross-sectional block diagram of a composite filter element assembly of the present invention;
FIG. 2 is an assembled block diagram of the first section cartridge membrane shell and first cartridge of FIG. 1;
FIG. 3 is an assembled block diagram of the second stage cartridge membrane housing and 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 numerals in the drawings are as follows:
100. A raw water inlet; 200. a produced water outlet; 300. a waste water outlet; 1. a first filter element; 2. a second filter element; 3. a cartridge housing; 4. a first section of filter element membrane shell; 5. a second section of filter element membrane shell; 51. a first stage waste water outlet; 52. a second stage waste water 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 adhesive part; 13a, a first section cartridge end cap; 13b, a second section of filter element end cover; 14. a top end cap; 15. a third cartridge end cap; 16. a third adhesive part; 17. a fourth channel; 18. a first seal; 19. and (5) sealing by glue.
Detailed Description
As shown in fig. 1-4, the present invention provides a composite filter element assembly comprising:
a raw water inlet 100, a produced water 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 filter membrane wire, the second filter element 2 comprises a second hollow fiber filter membrane wire, the second filter element 2 is positioned at one axial end of the first filter element 1, water entering the raw water inlet 100 can be filtered through the first filter element 1 and can enter the interior of the first hollow fiber filter membrane wire and can be finally led out through the produced water outlet 200 during filtration, water not entering the interior of the first filter element 1 can be filtered through the second filter element 2 and can enter the interior of the second hollow fiber filter membrane wire and can be finally led out through the produced water outlet 200 during filtration, and water not entering the interior of the second filter element 2 can be communicated with the wastewater outlet 300 and can be led out;
Still include filter core housing 3 and top end cover 14, produce water outlet 200 with waste water outlet 300 all sets up the axial first end of filter core housing 3, top end cover 14 with the axial second end of filter core housing 3 meets, raw water import 100 for set up in the through-hole on the top end cover 14, in order to be able to introduce raw water to the inside of filter core housing 3.
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 through the first filter element and enter the first hollow fiber filtering membrane wire during filtration and finally be guided out through the water producing outlet, water not entering the first filter element 1 can be filtered through the second filter element 2 and enter the second hollow fiber filtering membrane wire during filtration and finally be guided out through the water producing outlet 200, the fiber filtering membrane wires are radially arranged together, the condition of gluing on a 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, has good separation effect on bivalent and high-valence salt and micromolecular organic matters, can improve the filtration precision and reduce the scaling risk; 2) The membrane area of the filter element is effectively increased, and the hollow fiber nanofiltration or reverse osmosis technology adopted by the technical scheme can effectively utilize the space, increase the membrane area and improve the water quality purification effect; 3) The operation pressure is low, the operation cost is low, the hollow fiber nanofiltration technology adopted in the technical scheme is that under the action of pressure difference, salt and micromolecular substances penetrate through the nanofiltration membrane, and the operation pressure is lower than that of the reverse osmosis filter element; 4) The filtering structure forming the first-stage two sections can also improve the recycling rate of wastewater.
Aiming at the problems that the traditional filter element assembly can not simultaneously meet the requirements of high filtering precision, low running cost, large water yield and convenient installation, the invention provides a filter element assembly technical scheme with high filtering precision and large water yield, which can effectively solve the problem of convenient installation and specifically comprises the following steps:
1. the traditional ultrafiltration filter element has low filtration precision and is easy to scale;
2. the traditional reverse osmosis filter element has high operating pressure and small effective membrane area;
3. The traditional nanofiltration filter core has low space utilization rate and low water production flux.
The problems are solved, the water yield can be improved, the membrane surface utilization rate is improved, the water quality purifying effect is improved, and the condition of difficult installation is avoided.
The invention discloses a one-stage two-section filter (RO filter element), which improves recovery rate, improves filtering precision by hollow membrane wires, solves the problem of improving precision and also improves recovery rate of produced water by adopting a hollow membrane wire and one-stage two-section structure.
Different from the traditional filter element assembly, the invention provides a radial-arrangement hollow fiber nanofiltration or reverse osmosis (from the upper position to the hollow fiber filtration membrane wire, which comprises nanofiltration and reverse osmosis) one-stage two-stage composite filter element assembly, which has the advantages of large effective membrane area, high filtration precision and large water yield flux, can meet the requirement of users on purifying water quality, can solve the problem of complex core replacement operation, and improves the filter element treatment efficiency. Different from the traditional filter element assembly, the invention utilizes the hollow fiber nanofiltration or reverse osmosis membrane to form a two-section filter element structure, improves the utilization rate of a membrane surface, designs a water inlet, a water outlet and a concentrated water outlet at the same end, and simplifies the installation operation of the filter element. The hollow fiber nanofiltration or reverse osmosis is of a hollow filiform structure, the filtered water can enter the hollow interior, and the water which cannot enter the hollow interior is concentrated water or wastewater with higher impurity content. .
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 filter element 2 is arranged in 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 preferable 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, the first filter element and the second filter element are arranged up and down in the axial direction, so that water is filtered from the first filter element above the axial direction and is sent out from a produced water 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 filter element housing 3 has a cylindrical structure, the first hollow fiber filter membrane wire has a U-shaped structure, a straight edge of which extends along the axial direction of the filter element housing 3, and the second hollow fiber filter membrane wire has a U-shaped structure, a straight edge of which extends along the axial direction of the filter element housing 3; the first hollow fiber filtering membrane wires are a plurality of and are distributed at intervals along the radial direction and the circumferential direction of the filter element shell 3; the second hollow fiber filtering membrane wires are a plurality of and are distributed at intervals along the radial direction and the circumferential direction of the filter element shell 3. The filter element shell is in a preferable structural form, the first hollow fiber filter membrane wires and the second hollow fiber filter membrane wires which extend along the axial direction, and the first hollow fiber filter membrane wires and the second hollow fiber filter membrane wires which are arranged at intervals can effectively increase the contact area with water in the space direction, improve the membrane area and improve the filtering effect.
In some embodiments, the side of the top end cap 14 facing the cartridge housing 3 has a first channel 6, the interior of the cartridge housing 3 is formed into a first cavity 7, the first cartridge 1 is located in the first cavity 7, the raw water inlet 100 communicates with one end of the first channel 6, and the other end of the first channel 6 communicates with the first cavity 7 to enable water to be introduced into the first cartridge 1 for filtration. The invention also can guide raw water into the first filter element through the first channel on one side of the top end cover facing the filter element shell to be filtered through the first cavity, the pure water part enters the hollow inside of the first filter element, the waste water which cannot enter the hollow inside of the first filter element is waste water, and the waste water further enters the second filter element to be filtered, so that the waste water utilization rate is improved.
In some embodiments, the second section of filter element membrane shell 5 forms a second cavity 8 inside, the second filter element 2 is located in the second cavity 8, at least one first section of waste water outlet 51 is formed on the first section of filter element membrane shell 4 in an axial direction in a manner penetrating through the inner wall and the outer wall of the first section of filter element membrane shell, and water in the first cavity 7 can enter the second cavity 8 through the first section of waste water outlet 51. The invention also can guide the wastewater filtered in the first filter element into the second cavity through the second cavity in the second section filter element membrane shell and enter the second cavity through the first section wastewater outlet, so as to filter at the second filter element, and improve the utilization efficiency of the wastewater.
In some embodiments, the filter further comprises a first section of filter element end cover 13a, one axial end of the first filter element 1 is connected with a first bonding part 12, the first section of filter element membrane shell 4 is sleeved on the periphery of the first bonding part 12, the periphery of the first section of filter element membrane shell 4 is in sealing connection with the first section of filter element end cover 13a, the second channel 9 is formed by the first bonding part 12 and the first section of filter element end cover 13a in the axial direction, and water filtered by the first filter element 1 enters the second channel 9. The invention also can guide the pure water filtered out from the first filter element into the second channel through the second channel between one axial end of the first filter element and the end cover of the first filter element, and then the pure water is guided out through the produced water outlet. In some embodiments, a first bonding portion 12 is connected to one axial end of the first filter element 1, a first section of filter element membrane shell 4 is sleeved on the periphery of the first bonding portion 12, the periphery of the first section of filter element membrane shell 4 is in sealing connection with the first section of filter element end cover 13a, and the second channel 9 is formed by the first bonding portion 12 and the first section of filter element end cover 13a in the axial direction. According to the invention, the first bonding part is arranged at one axial end of the first filter element, so that the first filter element can be bonded to the first section of filter element membrane shell, the first section of filter element end cover is positioned below the first section of filter element membrane shell in the axial direction and is in sealing connection with the first section of filter element membrane shell, and the sealing ring is arranged, so that the one axial end of the first filter element is fixed, and the first bonding part can accommodate water to pass through.
In some embodiments, a second section of filter element end cover 13b is further disposed at one axial end of the second section of filter element membrane shell 5, a third channel 10 is further disposed between the second section of filter element membrane shell 5 and the second section of filter element end cover 13b, water filtered by the second filter element 2 enters the third channel 10, and the second channel 9 is communicated with the third channel 10 and then can drain the filtered water through the produced water outlet 200. The invention also enables a third channel to be formed between the second section filter element end cover and the second section filter element membrane shell through the arrangement of the second section filter element end cover, and the water filtered by the second filter element can be led out of pure water to the 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 portion of the second cavity 8 located radially inward of the second filter element 2 is provided with a communication pipe 11, and one end of the communication pipe 11 communicates with the produced water outlet 200, and the other end communicates with the second passage 9, so that water entering the interior of the first filter element 1 can be discharged through the communication pipe 11 via the produced water outlet 200.
The invention also discloses a water outlet arranged at the first axial end of the filter element shell, and the communicating pipe which is arranged inside the second section of filter element membrane shell and is positioned at the radial inner side of the second filter element, so that the produced water of the part of the second cavity which is positioned at the radial inner side of the second filter element can be led out to the water outlet through the communicating pipe, and the filtered pure water can be led out effectively.
In some embodiments, the axial other end of the first cartridge 1 is formed as an elbow portion of a U-tube.
In some embodiments, a third bonding portion 16 is disposed at one axial end of the second filter element 2, the second segment of the filter element membrane shell 5 is sleeved on the outer periphery of the third bonding portion 16, the communicating pipe 11 is penetrated on the inner periphery of the third bonding portion 16, and water filtered out from the second filter element 2 passes through the third bonding portion 16 and then enters the third channel 10. The invention also can fix one end of the second filter element in the axial direction through the third bonding part arranged at one end of the second filter element in the axial direction, the communicating pipe is arranged in the third bonding part in a penetrating way, and pure water filtered out of the second filter element can enter the third channel through the third bonding part to be discharged.
In some embodiments, the 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 section filter element membrane shell 5, a second section waste water outlet 52 is axially and penetratingly formed in the second section filter element membrane shell 5, a fourth channel 17 is formed between the third filter element end cover 15 and the second section filter element end cover 13b, one end of the fourth channel 17 is communicated with the waste water outlet 300, the other end of the fourth channel 17 is 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 waste water outlet 52, and then is discharged through the waste water outlet 300. According to the invention, the fourth channel can be formed between the third filter element end cover and the second section filter element membrane shell, and the fourth channel can be communicated with the second cavity through the second section waste water outlet, so that the water of the filtered waste water which does not enter the second filter element in the second cavity is led into the fourth channel and led out to the waste water outlet 300.
In some embodiments, the outer periphery of the second section of filter element membrane shell 5 is in sealing connection with the second section of filter element end cap 13b (through the first sealing member 18), and the other axial end of the second filter element 2 is formed as an elbow portion of a U-shaped tube.
In some embodiments, the wastewater outlet 300 is located radially outward of the produced water 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 according to any one of the preceding claims.
Fig. 1 is a cross-sectional view of a cartridge assembly, fig. 2 is a first cartridge assembly, fig. 3 is a second cartridge assembly, and fig. 4 is a cartridge membrane shell and end cap assembly. As shown in the figure, the filter element assembly comprises a filter element membrane shell (i.e. a filter element housing 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 filter element membrane shell, a first section filter element end cover and a first membrane bundle (preferably first hollow fiber filter membrane wires), the second filter element comprises a second section filter element membrane shell and a second membrane bundle (preferably second hollow fiber filter membrane wires), the first membrane bundle and the second membrane bundle are composed of a plurality of hollow fiber nanofiltration membranes or reverse osmosis membrane wires, the area ratio of the two membrane wires is 1.5-2.5:1, the filter element membrane shell is used for filling membrane wires, the first section filter element membrane shell is used for fixing the first membrane bundle and conducting raw water and first section waste water diversion, the first section filter element end cover is used for forming a water producing cavity with the first membrane bundle and separating the produced water from the first section filter element membrane bundle, the second section filter element end cover is used for fixing the second membrane bundle and separating the first section produced water and the second membrane bundle, the second section filter element end cover is used for forming a water producing and separating the produced water from the second membrane bundle, the top end cover is used for forming a sealing cavity with the filter element end cover and the filter element.
The components are described in terms of a cartridge assembly sequence, with a second cartridge described as follows:
1. The first section filter element membrane shell is divided into a side surface, a bottom surface and an interface surface, a plurality of through holes are designed on the side surface and are communicated with raw water (namely, the first section raw water outlet), the positions of the through holes are designed at upper positions so as 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 filter element membrane shell is designed with a through hole which is communicated with the second filter element, and the wastewater generated by the first filter element is used as raw water of the second filter element, so that the first section concentrated water outlet is also called a second section raw water inlet, the interface surface of the first section filter element membrane shell is used for fixing the first membrane bundle and forming a water producing cavity, a groove is reserved at the outer side of the interface surface, a sealing ring is sleeved in the installation process, the isolation of the wastewater and the produced water is facilitated, and the purity of the produced water is ensured.
2. The bottom end of the first membrane bundle is a water-producing end surface, all hollow fiber nanofiltration or reverse osmosis membrane filaments of the first membrane bundle are U-shaped, and one bent end is not required to be poured by adopting the U-shape, so that the effective membrane area is increased; all membrane wires are bent into a U shape, the head end and the tail end of the membrane wires are positioned on the interface surface of the membrane shell of the first section of filter element and are cast into membrane tows by hard glue, and membrane holes are reserved on the end surface of the hard glue for producing water and yielding water. The pouring layer can be poured by adopting epoxy resin, so that the film wires are distributed more uniformly, the epoxy resin has good adhesion and high bonding strength, and can bear higher pressure.
3. The first section filter element end cover is divided into a contact surface with the first section filter element membrane shell and a contact surface with the second section filter element membrane shell and is used for separating the first section wastewater and the first section produced water.
The second cartridge was assembled as follows:
1. The second section filter element membrane shell is divided into a side surface, a bottom surface, a center surface and an interface surface, and the side surface is used for separating raw water; the bottom surface is provided with a through hole for discharging wastewater; the central surface is used for separating the first section of produced water from the second filter element and conducting the diversion of the first section of produced water, a groove is reserved at the upper end of the central surface, a sealing ring is sleeved on the central surface during installation, the first filter element is fixed when the central surface is connected with the end cover of the first section of filter element, and the isolation of the produced water from the second filter element is ensured; 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 when the water producing cavity is installed, so that isolation between waste water and produced water is facilitated, and purity of the produced water is guaranteed.
2. The bottom end of the second membrane bundle is a water-producing end surface, all hollow fiber nanofiltration or reverse osmosis membrane filaments of the second membrane bundle are U-shaped, and one bent end is not required to be poured by adopting the U-shape, so that the effective membrane area is increased; all membrane wires are bent into a U shape, the head end and the tail end of the membrane wires are positioned on the interface surface of the membrane shell of the first section of filter element and are cast into membrane tows by hard glue, and membrane holes are reserved on the end surface of the hard glue for producing water and yielding water. The pouring layer can be poured by adopting epoxy resin, so that the film wires are distributed more uniformly, the epoxy resin has good adhesion and high bonding strength, and can bear higher pressure.
3. The second section filter element end cover is divided into a contact surface with the second membrane bundle glue layer, a contact surface with the second section filter element membrane shell and a diversion interface, and the contact surface of the second section filter element end cover and the second membrane bundle glue layer forms a water producing cavity and separates water production and first section waste water; the groove is reserved on the outer side of the diversion interface surface, and the sealing ring is sleeved during installation, so that isolation between waste water and produced water is facilitated, and purity of the produced water is guaranteed.
And 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 glue sealing (glue sealing 19) is carried out at the joint of the first section of filter element membrane shell and the second section of filter element membrane shell, so that raw water is ensured not to permeate into the second filter element.
The filter element end cover is divided into a raw water contact surface, a second section waste water contact surface and a diversion interface, the filter element end cover and the second section waste water contact surface form a waste water cavity, the raw water and the second section waste water are separated, and diversion of the second section waste water is performed at the same time; the groove is reserved on the outer side of the diversion interface surface, and the sealing ring is sleeved when the diversion interface is installed, so that isolation of raw water and waste water is facilitated, and purity of the raw water which is not polluted by the waste water is ensured.
After the inner components are assembled, the inner components are integrally inserted into the filter element membrane shell, the filter element membrane shell is an integrated shell, three openings which are concentrically arranged are designed in the center of the bottom, and a water outlet, a waste water outlet and a raw water inlet are sequentially formed from inside to outside.
The top end cover forms a sealing cavity with the filter element membrane shell through spin-melt sealing or spiral sealing, so that the tightness of the filter element assembly is ensured.
Hollow fiber nanofiltration or reverse osmosis primary two-stage composite filter element operation waterway:
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, the membrane wires filter the raw water by utilizing pressure difference, produced water flows into a produced water cavity formed by a first-section filter element end cover and a first-section pure water outlet glue layer through an opening at the bottom of a first membrane bundle, and flows out from a bottom produced water outlet through a channel formed by 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, enters the second filter element through a first section of concentrated water outlet on a first section of filter element membrane shell, membrane wires purify water quality by utilizing pressure difference, and 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 flows out through a produced water outlet; the wastewater passes through a second-section concentrated water outlet of the second-section filter element membrane shell and is discharged from a wastewater outlet at the bottom of the filter element membrane shell through the diversion of the filter element end cover.
Hollow fiber nanofiltration or reverse osmosis primary two-stage composite filter element flushing waterway:
raw water enters the filter element through the raw water inlet, enters the first filter element through a first-section raw water outlet arranged on the first-section filter element membrane shell, washes the surface of the membrane wire by water flow, and enters the second filter element through a first-section concentrated water outlet on the first-section filter element membrane shell, so that the surface of the membrane wire is continuously washed, and finally, washing water is discharged through a waste water outlet at the bottom of the filter element membrane shell.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (14)
1. A composite filter element assembly, characterized in that: comprising the following steps:
Raw water inlet (100), water outlet (200), waste water outlet (300), first filter core (1) and second filter core (2), first filter core (1) includes first hollow fiber filtration membrane silk, second filter core (2) includes second hollow fiber filtration membrane silk, second filter core (2) are located the axial one end of first filter core (1), the water that raw water inlet (100) got into can filter through first filter core (1) to get into the inside of first hollow fiber filtration membrane silk and finally export through water outlet (200) when filtering, the water that does not get into the inside of first filter core (1) can filter through second filter core (2) to get into the inside of second hollow fiber filtration membrane silk and finally export through water outlet (200) when filtering, the water that does not get into the inside of second filter core (2) can communicate with waste water outlet (300) and export;
Still include filter core shell (3) and top end cover (14), produce water export (200) with waste water export (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) for set up in through-hole on top end cover (14), in order to be able to introduce raw water to the inside of filter core shell (3).
2. A composite filter element assembly according to 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) are located the axial one end of second section filter core membrane shell (5), first filter core (1) are located the axial other end of first section filter core membrane shell (4).
3. A composite filter element assembly according to claim 2, wherein:
The filter element shell (3) is of a cylindrical structure, the first hollow fiber filter membrane wire is of a U-shaped structure, the straight edge of the first hollow fiber filter membrane wire extends along the axial direction of the filter element shell (3), the second hollow fiber filter membrane wire is of a U-shaped structure, and the straight edge of the second hollow fiber filter membrane wire extends along the axial direction of the filter element shell (3); the first hollow fiber filtering membrane wires are a plurality of and are distributed at intervals along the radial direction and the circumferential direction of the filter element shell (3); the second hollow fiber filtering membrane wires are a plurality of and are distributed at intervals along the radial direction and the circumferential direction of the filter element shell (3).
4. A composite filter element assembly according to claim 2, wherein:
One side of the top end cover (14) facing the filter element housing (3) is provided with a first channel (6), the interior of the filter element housing (3) is formed into a first cavity (7), the first filter element (1) is positioned 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 as to guide water into the first filter element (1) for filtering.
5. A composite filter element assembly according to 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) in the mode of running through its inner and outer wall along the axial on the 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. A composite filter element assembly according to claim 5, wherein:
Still include first section filter core end cover (13 a), the axial one end connection of first filter core (1) 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 (13 a), first bonding portion (12) with first section filter core end cover (13 a) forms second passageway (9) in axial direction, through the water after the filtration of first filter core (1) gets into in second passageway (9).
7. A composite filter element assembly according to 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 (13 b), second section filter core membrane shell (5) with still have third passageway (10) between second section filter core end cover (13 b), through the water after second filter core (2) filters gets into in third passageway (10), second passageway (9) with in third passageway (10) intercommunication back can be through produce water outlet (200) with the water after filtering discharge.
8. A composite filter element assembly according to claim 7, wherein:
the part in the second cavity (8) and 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 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 through the water outlet (200) through the communicating pipe (11).
9. A composite filter element assembly according to 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. A composite filter element assembly according to any one of claims 8-9, wherein:
The axial one end connection of second filter core (2) is provided with third bonding portion (16), the periphery cover of third bonding portion (16) is established second section filter core membrane shell (5), the inner periphery of third bonding portion (16) wears to establish communicating pipe (11), the hydroenergy of filtering out through second filter core (2) is passed through behind third bonding portion (16) get into in third passageway (10).
11. A composite filter element assembly according to 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 along the axial and are run through and have been seted up second section waste water export (52), third filter core end cover (15) with be formed with fourth passageway (17) between second section filter core end cover (13 b), one end of fourth passageway (17) with waste water export (300) intercommunication, the other end can with second cavity (8) intercommunication, so that do not get into hydroenergy in second filter core (2) passes through second section waste water export (52) get into in fourth passageway (17), and then pass through waste water export (300) discharge.
12. A composite filter element assembly according to claim 7, wherein:
The periphery of the second section filter element membrane shell (5) is in sealing connection with the second section filter element end cover (13 b), and the other axial end of the second filter element (2) is formed into a bent pipe part of a U-shaped pipe.
13. A composite filter element assembly according to any one of claims 1-12, wherein:
The wastewater outlet (300) is positioned radially outside the produced water outlet (200); and/or the number of the groups of groups,
The first hollow fiber filtration membrane filaments are hollow fiber nanofiltration membrane filaments or hollow reverse osmosis membrane filaments.
14. A water purification system, characterized by: a composite filter element assembly comprising any one of claims 1-13.
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| CN202210080925.6A CN114345132B (en) | 2022-01-24 | 2022-01-24 | Composite filter element assembly and water purification system |
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| CN202210080925.6A CN114345132B (en) | 2022-01-24 | 2022-01-24 | Composite filter element assembly and water purification system |
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| CN114345132B true CN114345132B (en) | 2024-09-27 |
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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 Filter Multiple Filter Assemblies |
| 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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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200405389Y1 (en) * | 2005-10-10 | 2006-01-10 | 주식회사 피코그램 | Water Filter Multiple Filter Assemblies |
| 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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