CN112125428B - Composite filter element and water purifier - Google Patents
Composite filter element and water purifier Download PDFInfo
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- CN112125428B CN112125428B CN202011117006.9A CN202011117006A CN112125428B CN 112125428 B CN112125428 B CN 112125428B CN 202011117006 A CN202011117006 A CN 202011117006A CN 112125428 B CN112125428 B CN 112125428B
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- filter element
- water
- filter
- flask
- reverse osmosis
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 161
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 239000012528 membrane Substances 0.000 claims abstract description 78
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 65
- 230000000903 blocking effect Effects 0.000 claims abstract description 61
- 230000004888 barrier function Effects 0.000 claims abstract description 11
- 238000011045 prefiltration Methods 0.000 claims description 26
- 230000004308 accommodation Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000746 purification Methods 0.000 abstract description 5
- 230000011218 segmentation Effects 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000004323 axial length Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000005465 channeling Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000008213 purified water Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a composite filter element and a water purifier, wherein the composite filter element comprises a filter flask and a segmentation end cover, the inner wall of the filter flask is provided with a blocking piece, and the blocking piece is at least partially suspended in the inner space of the filter flask and is spaced between the inner wall of the filter flask to form a clamping groove. The split end cover is arranged in the filter flask, the space in the filter flask is split into a first accommodating cavity and a second accommodating cavity, the split end cover comprises a clamping hook part, the clamping hook part is arranged in the clamping groove, and the blocking piece is blocked at the inner side of the clamping hook part. The first cavity that holds is equipped with reverse osmosis membrane filter element assembly in, and the interval forms the pressurized water clearance between the lateral wall of reverse osmosis membrane filter element assembly and the filter flask, and pressurized water clearance communicates with the raw water inlet of the reverse osmosis membrane filter element of reverse osmosis membrane filter element assembly, is equipped with leading filter element assembly in the second cavity that holds. When pressurizing in to the pressurization water clearance, block the inboard at the trip portion of cutting apart the end cover based on the barrier to the trip portion can compress tightly in the draw-in groove, thereby avoids two holding the condition that the water appears scurrying between the chamber, in order to ensure the water purification effect.
Description
Technical Field
The invention relates to the technical field of water purification, in particular to a composite filter element and a water purifier.
Background
Along with the continuous development of water purification equipment technical field, through being in the same place with multistage filter core integration in order to reduce purifier whole volume, become main research development direction. The reverse osmosis membrane filter element is a filter element which utilizes a high-pressure environment to ensure that impurities are intercepted on the raw water side of the reverse osmosis membrane, and water permeates into the pure water side of the reverse osmosis membrane, thereby having a filtering effect. And when the reverse osmosis membrane filter element and other filter elements are integrated in a filter flask, the problem of poor filtering effect is easy to occur.
Disclosure of Invention
Aiming at the problem that the composite filter element integrated with the reverse osmosis membrane filter element and other filter elements has poor filtering effect when in use, the invention provides the composite filter element and the water purifier, which can achieve the aim of improving the water purifying effect.
The utility model provides a compound filter core, includes the filter flask and cuts apart the end cover, the inner wall of filter flask is equipped with the barrier, the barrier at least partially hang in the filter flask inner space with the interval forms the draw-in groove between the inner wall of filter flask, it sets up to cut apart the end cover in the filter flask, will the space in the filter flask is cut apart into first accommodation chamber and second accommodation chamber, it includes the trip portion to cut apart the end cover, the trip portion is arranged in the draw-in groove, the barrier blocks the inboard of trip portion, be equipped with reverse osmosis membrane filter element assembly in the first accommodation chamber, reverse osmosis membrane filter element assembly with the interval forms the pressurized water clearance between the lateral wall of filter flask, the pressurized water clearance with the raw water inlet intercommunication of reverse osmosis membrane filter element assembly, be equipped with leading filter element assembly in the second accommodation chamber.
The above-mentioned scheme provides a composite filter core, will reverse osmosis membrane filter core subassembly with leading filter core subassembly is integrated in the filter flask, is in simultaneously further set up in the filter flask cut apart the end cover, with space in the filter flask is cut apart into first holding chamber with the second holds the chamber, reverse osmosis membrane filter core subassembly is located in the first holding chamber, leading filter core subassembly is located in the second holds the chamber. The interval forms the pressurized water clearance between reverse osmosis membrane filter core subassembly and the lateral wall of filter flask to in-process of making water, in order to make reverse osmosis membrane filter core subassembly can be better play the filtration, need to pressurize in the pressurized water clearance. In the pressurizing process, the filter flask is likely to deform and expand outwards under the action of pressure, and at the moment, the blocking piece arranged on the inner wall of the filter flask is used for blocking the inner side of the clamping hook part of the split end cover, so that the clamping hook part can be tightly pressed in the clamping groove, the split end cover can reliably separate the first accommodating cavity from the second accommodating cavity, and the water channeling condition between the two accommodating cavities can not occur. The composite filter element integrated with the reverse osmosis membrane filter element assembly and the preposed filter element assembly is ensured to have better water purifying effect in the water preparing process.
In one embodiment, the side wall of the first accommodating cavity is a first side wall, the side wall of the second accommodating cavity is a second side wall, the inner diameter of the first side wall is smaller than the inner diameter of the second side wall, the blocking piece is located at a corner where the first side wall is connected with the second side wall, the blocking piece is connected with the first side wall, the blocking piece is located at the inner side of the second side wall, and the blocking piece and the second side wall are surrounded to form the clamping groove.
In one embodiment, the blocking piece is of an annular structure, the inner peripheral surface of the blocking piece is flush with the inner wall surface of the first side wall, and the outer peripheral surface of the blocking piece and the second side wall are spaced to form the clamping groove;
or a plurality of the blocking pieces are arranged at intervals in the circumferential direction of the side wall of the filter bottle.
In one embodiment, the aperture of the first accommodating cavity is consistent with the aperture of the second accommodating cavity, the blocking piece comprises a connecting portion and a blocking portion, the connecting portion is arranged at an included angle with each other, the connecting portion is connected with the inner wall of the filter flask and the blocking portion, the blocking portion and the inner wall of the filter flask are separated to form the clamping groove, and the blocking portion is blocked at the inner side of the clamping hook portion.
In one embodiment, the first accommodating cavity and the second accommodating cavity are sequentially arranged in the axial direction of the filter flask, and the opening direction of the clamping groove is along the axial direction of the filter flask.
In one embodiment, a first seal is provided between the split end cap and the sidewall of the filter flask;
Or a second sealing piece is arranged between the clamping hook part and the bottom wall of the clamping groove;
or a third sealing piece is arranged between the clamping hook part and the blocking piece.
In one embodiment, one end of the pre-filter element assembly abuts against the partition end cover, the clamping hook portion is of an annular structure, the clamping hook portion is distributed at the position of the outermost periphery of the partition end cover, and the other end of the pre-filter element assembly is provided with a pre-filter element end cover.
In one embodiment, the reverse osmosis membrane filter element assembly comprises a coiled membrane central tube and a reverse osmosis membrane filter element, the coiled membrane central tube comprises a rear filter element and end covers arranged at two ends of the rear filter element, the reverse osmosis membrane filter element is sleeved on the coiled membrane central tube, a diversion trench is arranged at the position, covered by the reverse osmosis membrane filter element, on the outer peripheral surface of the end cover, liquid in the diversion trench can flow into the rear filter element, and a pressurized water gap is formed between the reverse osmosis membrane filter element and the side wall of the filter flask at intervals.
In one embodiment, the filter further comprises a first central tube and a second central tube, a raw water gap is formed between the front filter element assembly and the side wall of the filter flask at intervals, a water passing jack is formed in the partition end cover, a front filter water gap is formed in the end face, far away from the front filter element assembly, of the filter flask, a front filter water gap, a pressurized water inlet, a concentrated water gap and a water purifying port are formed in the side wall of the front filter element assembly at intervals, a water guide through hole is formed in the front filter element end cover, one end of the first central tube is inserted into the second accommodating cavity and is communicated with the water guide through hole, the other end of the first central tube sequentially penetrates through the water passing jack and the water coiling central tube and is communicated with the raw water gap, a second central tube is sleeved outside the first central tube, a water passing gap is formed in the side wall of the water passing jack at intervals of the first central tube, the front filter water gap is communicated with the front filter water gap and the front filter water filtering gap, a water guide through hole is formed in the side wall of the water coiling jack, and a water filtering membrane is communicated with the water purifying gap is formed in the water filtering membrane.
A water purifier comprising a composite filter element according to any one of the preceding claims.
The above-mentioned scheme provides a purifier, through adopting the compound filter core in any one of the above-mentioned embodiments to make when with reverse osmosis membrane filter core subassembly and leading filter core subassembly integration together, the purifier can have better water purification effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural view of a composite filter element according to the present embodiment;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
FIG. 3 is an exploded view of the composite filter element of FIG. 1;
FIG. 4 is a cross-sectional view of the composite filter element of FIG. 1 at a split end cap;
FIG. 5 is a cross-sectional view of a segmented end cap of the composite filter element of another embodiment;
FIG. 6 is a schematic view of the structure of the pre-filter element assembly according to the present embodiment;
FIG. 7 is a cross-sectional view of the pre-cartridge assembly B-B of FIG. 6;
FIG. 8 is a schematic structural view of a reverse osmosis membrane cartridge assembly according to the present embodiment;
FIG. 9 is a cross-sectional view taken along the direction C-C in FIG. 8;
FIG. 10 is a schematic structural view of a coiled central tube according to the present embodiment;
fig. 11 is a sectional view taken along the direction D-D in fig. 10.
Reference numerals illustrate:
10. A composite filter element; 11. a filter flask; 111. pressurized water gap; 112. a first sidewall; 113. a second sidewall; 114. raw water gap; 115. leading a filtering water gap; 116. a water purifying gap; 12. dividing the end cover; 121. a hook part; 122. a first seal; 123. a second seal; 124. a water passing jack; 13. a blocking member; 14. a reverse osmosis membrane filter element assembly; 141. a reverse osmosis membrane filter element; 142. a coiled film central tube; 1421. a rear filter element; 1422. an end cap; 1423. a diversion trench; 15. a pre-filter element assembly; 151. a filter element end cover is arranged in front; 1511. a water-guiding through hole; 16. a first central tube; 161. a water passing gap; 17. a second center tube; 20. a raw water gap; 30. leading filtering water gap; 40. a pressurized water inlet; 50. a water concentration port; 60. and (3) cleaning the water gap.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1-3, in one embodiment, a composite filter cartridge 10 is provided that includes a filter flask 11 and a split end cap 12. The dividing end cap 12 is disposed in the filter flask 11 to divide a space in the filter flask 11 into a first accommodating chamber and a second accommodating chamber. A reverse osmosis membrane filter element assembly 14 is arranged in the first accommodating cavity, and a preposed filter element assembly 15 is arranged in the second accommodating cavity. The reverse osmosis membrane cartridge assembly 14 and the pre-cartridge assembly 15 are integrated in the filter flask 11. A pressurized water gap 111 is formed between the reverse osmosis membrane filter element assembly 14 and the side wall of the filter flask 11 at intervals, and the pressurized water gap 111 is communicated with a raw water inlet of the reverse osmosis membrane filter element assembly 14. Further, as shown in fig. 4 and 5, the inner wall of the filter flask 11 is provided with a blocking member 13, and the blocking member 13 is at least partially suspended in the inner space of the filter flask 11 and spaced from the inner wall of the filter flask 11 to form a clamping groove. The split end cover 12 includes a hook portion 121, the hook portion 121 is located in the slot, and the blocking member 13 is blocked inside the hook portion 121.
According to the composite filter element 10 provided by the scheme, the reverse osmosis membrane filter element assembly 14 and the pre-filter element assembly 15 are integrated in the filter flask 11, meanwhile, the partition end cover 12 is further arranged in the filter flask 11, the space in the filter flask 11 is partitioned into the first accommodating cavity and the second accommodating cavity, the reverse osmosis membrane filter element assembly 14 is located in the first accommodating cavity, and the pre-filter element assembly 15 is located in the second accommodating cavity. The interval between the reverse osmosis membrane filter element assembly 14 and the side wall of the filter flask 11 forms a pressurized water gap 111, so that in the process of water preparation, in order to make the reverse osmosis membrane filter element assembly 14 perform a better filtering function, the pressurized water gap 111 needs to be pressurized. The filter flask 11 may deform under pressure during pressurization and expand outwardly. At this time, the blocking piece 13 provided on the inner wall of the filter flask 11 blocks the inner side of the hook portion 121 of the split end cap 12, so that the hook portion 121 can be pressed into the clamping groove, and the split end cap 12 can reliably split the first accommodating cavity and the second accommodating cavity, and no water channeling occurs between the two accommodating cavities. Ensuring that the composite filter element 10 integrated with the reverse osmosis membrane filter element assembly 14 and the front filter element assembly 15 has better water purifying effect in the water making process.
When the filter bottle 11 deforms under the action of pressure and expands outwards, the filter bottle 11 deforms and expands in the direction away from the clamping hook 121 at the outer side of the clamping hook 121, the blocking piece 13 blocks the inner side of the clamping hook 121, and the blocking piece 13 is tightly pressed with the clamping hook 121. Therefore, even if the filter flask 11 deforms and expands, the split end cover 12 cannot be separated from the filter flask 11, and water channeling cannot occur between the two accommodating cavities.
Specifically, as shown in fig. 4 to 7, the split end cap 12 may be a seal end cap of the pre-filter element assembly 15, for closing an end face of the pre-filter element assembly 15. For example, in one embodiment, one end of the pre-filter element assembly 15 abuts against the split end cap 12, and the other end of the pre-filter element assembly 15 is provided with a pre-filter element end cap 151. The end caps at the two ends of the pre-filter element assembly 15 enable water flow to flow along the radial direction of the pre-filter element assembly 15 in the water production process, so that the filtering process of the pre-filter element assembly 15 can be normally performed.
In particular, as shown in fig. 4-7, in one embodiment, the pre-cartridge assembly 15 may include a paper-folded cartridge and a carbon rod, with the paper-folded cartridge being sleeved outside the carbon rod. In the water preparation process, raw water reaches the periphery of the paper folding filter element, and then gradually passes through the carbon rod from outside to inside for filtering.
Further, in one embodiment, as shown in fig. 2, a side wall of the filter flask 11 for enclosing the first accommodating cavity is a first side wall 112, a side wall of the filter flask 11 for enclosing the second accommodating cavity is a second side wall 113, and an inner diameter of the first side wall 112 is smaller than an inner diameter of the second side wall 113. In other words, the inner diameter of the first accommodation chamber is smaller than the inner diameter of the second accommodation chamber. As shown in fig. 2, 4 and 5, the blocking member 13 is located at a corner where the first side wall 112 is connected with the second side wall 113, the blocking member 13 is connected with the first side wall 112, the blocking member 13 is located at an inner side of the second side wall 113, and the clamping groove is formed between the blocking member 13 and the second side wall 113 in a surrounding manner. The hook 121 of the split end cap 12 is located in the slot. When the sidewall of the filter flask 11 is deformed, the split end cap 12 can limit the sidewall of the filter flask 11 from expanding outwards, the hook portion 121 of the split end cap 12 is in close contact with the blocking member 13, and water channeling is avoided between the two accommodating cavities split by the split end cap 12.
In further detail, in one embodiment, as shown in fig. 2, 4-7, the barrier 13 is a ring-shaped structure. The inner circumferential surface of the blocking member 13 is flush with the inner wall surface of the first side wall 112, and the outer circumferential surface of the blocking member 13 is spaced from the second side wall 113 to form the clamping groove.
Further, the hook portions 121 are in an annular structure, and the hook portions 121 are distributed at the outermost positions of the split end cover 12. The inner peripheral surface of the hook portion 121 can be bonded to the stopper 13.
Or in another embodiment, the number of the blocking pieces 13 is plural, and the plurality of blocking pieces 13 are arranged at intervals in the circumferential direction of the side wall of the filter flask 11. One clamping groove is formed between each blocking piece 13 and the inner wall of the filter bottle 11, and the clamping hook part 121 is positioned in each clamping groove.
Further, in still another embodiment, the aperture of the first accommodating chamber and the aperture of the second accommodating chamber are identical, in other words, the inner space of the filter flask 11 is cylindrical. At this time, in order to enable the blocking piece 13 to form the clamping groove with the inner wall of the filter flask 11, the blocking piece 13 includes a connecting portion and a blocking portion, wherein the connecting portion and the blocking portion are disposed at an included angle with each other, the connecting portion connects the inner wall of the filter flask 11 with the blocking portion, the blocking portion and the inner wall of the filter flask 11 are spaced to form the clamping groove, and the blocking portion is blocked at the inner side of the clamping hook portion 121.
Specifically, the connection portion is disposed vertically between the side wall of the filter flask 11, in other words, the connection portion extends along the radial direction of the filter flask 11. The blocking part and the connecting part are vertically arranged.
Further, as shown in fig. 2, in one embodiment, the first accommodating chamber and the second accommodating chamber are sequentially arranged in the axial direction of the filter flask 11, and the opening direction of the clamping groove is along the axial direction of the filter flask 11.
In one embodiment, as shown in fig. 2, 4 and 5, the inner diameter of the first side wall 112 is smaller than the inner diameter of the second side wall 113, the blocking member 13 is located at a corner where the first side wall 112 is connected to the second side wall 113, the blocking member 13 is connected to the first side wall 112, and the blocking member 13 extends along the axial direction of the filter flask 11 and is spaced from the second side wall 113, so as to form the clamping groove.
In order to improve the reliability of the division between the first accommodating cavity and the second accommodating cavity, water can not flow between the first accommodating cavity and the second accommodating cavity. As shown in fig. 4, in one embodiment, a first seal 122 is provided between the split end cap 12 and the sidewall of the filter flask 11. The blocking member 13 always limits the hook portion 121 in the clamping groove, so that the first sealing member 122 can be always pressed between the split end cover 12 and the filter flask 11. The split end cap 12 to some extent prevents the filter flask 11 from expanding outwardly.
Or in another embodiment, as shown in fig. 5, a second sealing member 123 is disposed between the hook portion 121 and the bottom wall of the slot.
Or in yet another embodiment, a third sealing member is provided between the hook portion 121 and the blocking member 13.
Therefore, when the filter flask 11 is deformed, the hook portion 121 contacts with the blocking piece 13 or the side wall of the filter flask 11 more tightly, so that the split end cover 12 can more reliably split the first accommodating cavity from the second accommodating cavity.
In further detail, as shown in fig. 8-11, in one embodiment, the reverse osmosis membrane cartridge assembly 14 includes a rolled membrane base pipe 142 and a reverse osmosis membrane cartridge 141. The coiled membrane central tube 142 comprises a rear filter element 1421 and end covers 1422 arranged at two ends of the rear filter element 1421, the reverse osmosis membrane filter element 141 is sleeved on the coiled membrane central tube 142, a diversion trench 1423 is arranged at the position, covered by the reverse osmosis membrane filter element 141, on the outer circumferential surface of the end cover 1422, and liquid in the diversion trench 1423 can flow into the rear filter element 1421. The pressurized water gap 111 is formed by the interval between the reverse osmosis membrane filter 141 and the sidewall of the filter flask 11.
So that the filtered water of the portion of the reverse osmosis membrane filter 141 covered on the end cap 1422 can flow into the post filter 1421 through the flow guide groove 1423 to be further filtered. In other words, the portion of the reverse osmosis membrane filter 141 opposite to the post filter 1421 can perform a filtering function to generate water, and the portion corresponding to the end cap 1422 can also participate in a filtering process to guide out the filtered water, thereby improving a water flow rate of the reverse osmosis membrane filter 141.
Further, in one embodiment, as shown in fig. 9, the axial length of the post filter 1421 is H1, and the axial length of the reverse osmosis membrane filter 141 is H1, and H1/H1 is 30% -70%.
So that the filtering capacity of the post filter 1421 can meet the requirement of further filtering the water obtained by filtering the reverse osmosis membrane filter 141; on the other hand, the axial length of the post-filter element 1421 is reasonably controlled, so that the manufacturing cost of the composite filter element 10 is effectively controlled. Specifically, the water production capacity of the reverse osmosis membrane filter element 141 and the water production capacity of the rear filter element 1421 are compared, the axial length H1 of the rear filter element 1421 is only required to be set to be 30% -70% of the axial length H1 of the reverse osmosis membrane filter element 141, and at this time, the rear filter element 1421 can further filter all the water obtained by filtering the reverse osmosis membrane filter element 141, so as to meet the filtering requirement. The condition that the redundant amount of the post filter element 1421 is large and the utilization rate is low due to the overlong axial length of the post filter element 1421 relative to the reverse osmosis membrane filter element 141 is avoided. And compared with the manufacturing cost of the end cover 1422, the manufacturing cost of the post-filter element 1421 is higher, the used materials are fragile, and the strength is lower, so that the axial length of the post-filter element 1421 is reduced and the axial length of the end cover 1422 is increased under the condition of meeting the filtering requirement, thereby reducing the overall manufacturing cost, improving the strength of the rolled film central tube 142 and improving the stability.
On the basis of the longer axial length of the end cover 1422, the reverse osmosis membrane filter element 141 covers more portions on the outer circumferential surface of the end cover 1422, and the diversion trench 1423 is further provided to further fully utilize the water production capacity of the portion on the reverse osmosis membrane filter element 141, so that the situation that too much water formed by filtration cannot be led out from too many places on the reverse osmosis membrane filter element 141, and the pressure is blocked too much is avoided. And further, under the condition of fully balancing the water production capacity, the cost is effectively controlled, and the water production flow of the whole reverse osmosis membrane filter element assembly 14 is ensured.
Further, as shown in fig. 2 and 3, in one embodiment, the composite filter cartridge 10 further includes a first center tube 16 and a second center tube 17. The end surface of the filter flask 11 far away from the pre-filter element assembly 15 is provided with a raw water port 20, a pre-filter water port 30, a pressurized water inlet 40, a concentrated water port 50 and a purified water port 60. The interval forms raw water gap 114 between leading filter core subassembly 15 with the lateral wall of filter flask 11, be equipped with water jack 124 on the segmentation end cover 12, the interval sets up between leading filter core end cover 151 and the filter flask end cover, be equipped with on the leading filter core end cover 151 and lead water through-hole 1511, first center tube 16 one end insert in the second holds the chamber with lead water through-hole 1511 intercommunication, the first center tube 16 other end pass in proper order water jack 124 with roll up behind the membrane center tube 142 with raw water mouth 20 intercommunication. Raw water enters the first central tube 16 from the raw water port 20 during water production, then enters the second accommodating cavity along the first central tube 16, flows into the raw water gap from the gap between the pre-filter element end cover 151 and the filter bottle end cover, and is subjected to pre-filtration.
The second central tube 17 is sleeved outside the first central tube 16, and the second central tube 17 and the first central tube 16 are arranged at intervals to form a pre-filtering water gap 115. The first central tube 16 and the side wall of the water passing jack 124 are spaced to form a water passing gap 161, and the pre-filtering water gap 115 is communicated with the water passing gap 161 and the pre-filtering water gap 30. Prefilter water filtered through the prefilter assembly 15 in the second receiving chamber passes from the water gap 161 into the prefilter water gap 115 and eventually out of the composite filter element 10 through the prefilter water gap 30. The pressurized pre-filtered water may then be further fed into the pressurized water gap 111. The pressurized water gap 111 communicates with the pressurized water inlet 40.
The second central tube 17 and the coiled membrane central tube 142 are spaced to form a water purifying gap 116, the water purifying gap 116 is communicated with the water purifying port 60, and the concentrated water outlet of the reverse osmosis membrane filter element 141 is communicated with the concentrated water port 50. The purified water filtered by the reverse osmosis membrane filter element assembly 14 is discharged from the purified water port 60 to the composite filter element 10, and the concentrated water filtered by the reverse osmosis membrane filter element 141 is discharged from the concentrated water port 50 to the composite filter element 10.
Further, in yet another embodiment, a water purifier is provided comprising a composite filter element 10 as described in any one of the preceding claims.
The above scheme provides a water purifier, through adopting the composite filter element 10 in any embodiment, thereby make when with reverse osmosis membrane filter element assembly 14 and leading filter element assembly 15 integrated together, the water purifier can have better water purification effect.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a compound filter core, its characterized in that includes the filter flask and cuts apart the end cover, the inner wall of filter flask is equipped with the barrier, the barrier at least part hang in filter flask inner space with the interval forms the draw-in groove between the inner wall of filter flask, it sets up to cut apart the end cover in the filter flask, will space in the filter flask is cut apart into first holding chamber and second and holds the chamber, it includes the trip portion to cut apart the end cover, trip portion is arranged in the draw-in groove, the barrier blocks the inboard of trip portion, be equipped with reverse osmosis membrane filter element assembly in the first holding chamber, reverse osmosis membrane filter element assembly with the interval forms the pressurized water clearance between the lateral wall of filter flask, the pressurized water clearance with the raw water inlet intercommunication of reverse osmosis membrane filter element assembly, be equipped with leading filter element assembly in the second holding chamber.
2. The composite filter element of claim 1, wherein the sidewall of the filter flask that encloses the first receiving chamber is a first sidewall, the sidewall of the filter flask that encloses the second receiving chamber is a second sidewall, the inner diameter of the first sidewall is smaller than the inner diameter of the second sidewall, the blocking member is located at a corner where the first sidewall is connected with the second sidewall, the blocking member is connected with the first sidewall, the blocking member is located inside the second sidewall, and the blocking member and the second sidewall enclose the clamping groove.
3. The composite filter element of claim 2, wherein the barrier member is of annular configuration, an inner peripheral surface of the barrier member is flush with an inner wall surface of the first sidewall, and an outer peripheral surface of the barrier member is spaced from the second sidewall to form the clamping groove;
or a plurality of the blocking pieces are arranged at intervals in the circumferential direction of the side wall of the filter bottle.
4. The composite filter element according to claim 1, wherein the aperture of the first accommodating cavity is identical to the aperture of the second accommodating cavity, the blocking member comprises a connecting portion and a blocking portion, the connecting portion is arranged at an included angle with each other, the connecting portion connects the inner wall of the filter flask with the blocking portion, the blocking portion and the inner wall of the filter flask are spaced to form the clamping groove, and the blocking portion is blocked at the inner side of the clamping hook portion.
5. The composite filter element according to any one of claims 1 to 4, wherein the first accommodation chamber and the second accommodation chamber are arranged in this order in an axial direction of the filter flask, and an opening direction of the clip groove is along the axial direction of the filter flask.
6. A composite filter element according to any one of claims 1 to 4, wherein a first seal is provided between the split end cap and a sidewall of the filter flask;
Or a second sealing piece is arranged between the clamping hook part and the bottom wall of the clamping groove;
or a third sealing piece is arranged between the clamping hook part and the blocking piece.
7. The composite filter element according to any one of claims 1 to 4, wherein one end of the pre-filter element assembly abuts against the split end cover, the hook portion has an annular structure, the hook portion is disposed at the outermost peripheral position of the split end cover, and the other end of the pre-filter element assembly is provided with a pre-filter element end cover.
8. The composite filter element according to claim 7, wherein the reverse osmosis membrane filter element assembly comprises a coiled membrane central tube and a reverse osmosis membrane filter element, the coiled membrane central tube comprises a rear filter element and end covers arranged at two ends of the rear filter element, the reverse osmosis membrane filter element is sleeved on the coiled membrane central tube, a diversion trench is arranged at a position covered by the reverse osmosis membrane filter element on the outer peripheral surface of the end cover, liquid in the diversion trench can flow into the rear filter element, and a pressurized water gap is formed between the reverse osmosis membrane filter element and the side wall of the filter flask at intervals.
9. The composite filter element according to claim 8, further comprising a first central tube and a second central tube, wherein a raw water gap is formed between the front filter element assembly and the side wall of the filter flask at intervals, a water passing jack is formed on the partition end cover, a raw water gap is formed between the end surface of the filter flask, which is far away from the front filter element assembly, a front filter water gap, a pressurized water inlet, a concentrated water gap and a water purifying port are formed on the end surface of the filter flask, a water guide through hole is formed on the front filter element end cover, one end of the first central tube is inserted into the second accommodating cavity and is communicated with the water guide through hole, the other end of the first central tube sequentially passes through the water passing jack and the coiled membrane central tube and then is communicated with the raw water gap, the second central tube is sleeved outside the first central tube, a front filter water gap is formed between the second central tube and the side wall of the water passing jack at intervals, a water passing gap is formed between the front filter water gap and the side wall of the water passing jack, a front filter water gap is communicated with the front filter water gap, a water guide through hole is formed between the water guide through hole and the water guide through hole, and the water guide through hole is communicated with the water guide through hole.
10. A water purifier comprising a composite filter element according to any one of claims 1 to 9.
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| CN202011117006.9A CN112125428B (en) | 2020-10-19 | 2020-10-19 | Composite filter element and water purifier |
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| CN213623534U (en) * | 2020-10-19 | 2021-07-06 | 珠海格力电器股份有限公司 | Composite filter element and water purifier |
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| CN111115880B (en) * | 2018-10-31 | 2024-10-15 | 佛山市顺德区美的饮水机制造有限公司 | Composite filter element and water treatment device with same |
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