CN220351814U - Filter element and water purifier with same - Google Patents
Filter element and water purifier with same Download PDFInfo
- Publication number
- CN220351814U CN220351814U CN202322356096.2U CN202322356096U CN220351814U CN 220351814 U CN220351814 U CN 220351814U CN 202322356096 U CN202322356096 U CN 202322356096U CN 220351814 U CN220351814 U CN 220351814U
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- Prior art keywords
- central tube
- shell
- wall
- end cover
- tube
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 239000008213 purified water Substances 0.000 claims abstract description 24
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000007423 decrease Effects 0.000 claims abstract description 3
- 239000012528 membrane Substances 0.000 claims description 20
- 239000002351 wastewater Substances 0.000 claims description 19
- 238000001223 reverse osmosis Methods 0.000 claims description 15
- 210000001624 hip Anatomy 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 8
- 230000008021 deposition Effects 0.000 abstract description 3
- 238000004804 winding Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The filter element comprises a shell, a cavity is arranged in the shell, and the cavity wall of the cavity is provided with a raw water inlet for inputting raw water to be filtered and a purified water outlet for outputting purified water after filtration; the central tube is arranged in the shell, a first end of the central tube is closed, a second end of the central tube is open and is communicated with the purified water outlet on the shell, and water passing holes penetrating through the wall thickness of the central tube are formed in the tube wall of the central tube along the circumferential direction; the filtering module is arranged in the shell and is positioned at the periphery of the central tube along the circumferential direction, and the filtering module is arranged to filter raw water in the shell so that filtered purified water enters the central tube through the water passing holes; the flow area on the cross section of the central tube gradually decreases along the direction from the first end to the second end of the central tube. Compared with the prior art, the utility model can integrally improve the flow velocity of fluid in the filter element and reduce scale deposition.
Description
Technical Field
The utility model belongs to the technical field of water treatment, and particularly relates to a filter element and a water purifier with the filter element.
Background
The filter element in the existing water purifier has a structure disclosed in an utility model patent with application number of CN202222459934.4 (the application number of CN 218281283U), and comprises a shell, a central tube, a reverse osmosis membrane, a one-way valve and an air bag, wherein the shell is provided with a water inlet port, a wastewater port and a water purifying port, the shell comprises an inner cylinder and an outer cylinder positioned at the periphery of the inner cylinder, a water storage cavity is formed between the outer wall of the inner cylinder and the inner wall of the outer cylinder, and the water purifying port is communicated with the water storage cavity and is provided with a flushing port with the inner cavity of the inner cylinder; the central tube is axially arranged in the inner cylinder, the central tube is provided with a hollow water purifying cavity, the side wall of the central tube is provided with a water passing hole, one end of the central tube is close to the water inlet port and forms a blocking end, and the other end of the central tube forms a water purifying outlet and is communicated with the water purifying port.
The structure disclosed in the utility model patent with application number CN202123001301.0 (the authorized publication number CN 216778487U) comprises an upper end cover, a lower shell, a central tube and a filtering membrane component, wherein the upper end cover is arranged on the lower shell to form a filtering shell, an opening at the top of the central tube is opposite to a pure water outlet, a pure water channel is formed in an axial hollow cavity of the central tube, a blocking end is arranged at the bottom of the central tube, and a diversion hole is formed in the side wall of the central tube; a bypass pipe is integrally formed on the outer side of the central pipe, a raw water channel is formed by axially hollowing the bypass pipe, the top end of the bypass pipe is communicated with a raw water inlet, and the upper end and the bottom end of the filtering membrane component respectively form raw water inlet end surfaces; a waste water flow channel is formed between the outer side wall of the filtering membrane component and the filtering shell, the inner side of the filtering membrane component is close to the diversion hole, and the waste water flow channel is communicated with the waste water outlet.
The technical problems of the existing filter element are as follows: the flow rate of raw water in the filter element is low, so that filtered purified water is low in water outlet, and the filter element is easy to scale.
Disclosure of Invention
The first technical problem to be solved by the utility model is to provide a filter element capable of improving the water outlet speed of purified water aiming at the current state of the art.
The second technical problem to be solved by the utility model is to provide a water purifier with the filter element.
The technical scheme adopted by the utility model for solving the first technical problem is as follows: a filter cartridge comprising:
a housing having a chamber inside, a wall of which has a raw water inlet through which raw water to be filtered is inputted, and a purified water outlet through which purified water after filtration is outputted;
the central tube is arranged in the shell, a first end of the central tube is closed, a second end of the central tube is open and is communicated with the purified water outlet on the shell, and water passing holes penetrating through the wall thickness of the central tube are formed in the tube wall of the central tube along the circumferential direction;
the filtering module is arranged in the shell and is positioned at the periphery of the central tube along the circumferential direction, and the filtering module is arranged to filter raw water in the shell so that filtered purified water enters the central tube through the water passing holes;
the method is characterized in that:
the flow area on the cross section of the central tube gradually decreases along the direction from the first end to the second end of the central tube.
Therefore, the flow channel design of the central tube can improve the flow velocity of the purified water in the central tube, so that the water outlet velocity of the purified water is improved, and when the purified water flows in the central tube in an accelerating way, the fluid outside the central tube can be filtered at a higher speed and then is fed into the central tube through the water holes, so that the flow velocity of the fluid in the filter element can be integrally improved, and the deposition of scale is reduced.
Preferably, the shell is provided with a ring wall extending along the longitudinal direction of the central tube and encircling the periphery of the filter module, and a first end cover and a second end cover which are arranged at two ends of the ring wall, wherein the ring wall, the first end cover and the second end cover jointly form a cavity of the shell, the first end cover is provided with the raw water inlet, and the second end cover is provided with the purified water outlet.
Preferably, the second end cover is also provided with a waste water outlet for outputting filtered waste water.
To further increase the flow rate of the fluid in the housing, the cross-section of the annular wall preferably has a gradually decreasing flow area in the direction from the first end to the second end of the central tube. In this way, as fluid flows from the first end cap to the second end cap, it is accelerated, thereby further reducing scale deposition.
Further, the longitudinal section of the annular wall is in the shape of an isosceles trapezoid.
Further, the ratio of the flow area on the cross section of the center tube to the flow area on the cross section of the annular wall is 2/3 to 3/4. So that the central tube can have more pure water.
In each of the above aspects, preferably, the filtration module includes a reverse osmosis membrane, and a spiral body is wound around the outer periphery of the central tube from inside to outside, and an outer peripheral wall of the spiral body is spaced apart from the annular wall so as to form an annular wastewater gap communicating with the wastewater outlet.
The reverse osmosis membrane is in the prior art, raw water enters the shell from the raw water inlet on the first end cover, pure water penetrating through the reverse osmosis membrane enters the central tube through the water holes and is output from the pure water outlet on the second end cover, and wastewater cannot pass through the reverse osmosis membrane, flows outwards to a wastewater gap along the reverse osmosis membrane spiral and is discharged from the wastewater outlet.
Preferably, the spiral body has a frusto-conical shape with a larger end and a smaller end, and the larger end is relatively adjacent to the first end cap of the housing and the smaller end is relatively adjacent to the second end cap of the housing.
Further, the reverse osmosis membrane before winding is isosceles trapezoid, and has parallel first base, second base and two waists that link up first, second base, one of them waist with the pipe wall of center tube is relative and parallel, the length of first base is greater than the length of second base, and the second end setting of first base correspondence center tube, the first end setting of second base correspondence center tube.
Further, the outer diameter of the first end of the central tube is L1, the outer diameter of the second end of the central tube is L2, the length of the first bottom edge is m1, the length of the second bottom edge is m2, and the four conditions are satisfied: l2+m1=l1+m2.
The utility model solves the second technical problem by adopting the technical proposal that: a water purifier characterized by having the filter element as described above.
Compared with the prior art, the utility model has the advantages that: through the flow area design on the cross section of center tube is the direction along the first end to the second end of center tube dwindles gradually, so, can promote the velocity of flow of the interior water purification of center tube, and then improve the play water velocity of water purification, and when the water purification is in the center tube with the acceleration flow, the outside fluid of center tube also can be filtered with faster speed in the time of the center tube through the water hole moisturizing center tube to can promote the velocity of flow of the fluid in the filter core on the whole, reduce the incrustation scale deposit.
Drawings
FIG. 1 is a schematic diagram of a filter element according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a filter element according to an embodiment of the present utility model from another perspective;
FIG. 3 is a schematic view of a part of a filter element according to an embodiment of the present utility model (the housing is omitted);
FIG. 4 is a cross-sectional view of a cartridge in an embodiment of the utility model;
fig. 5 is a schematic structural diagram of a reverse osmosis membrane and a central tube before winding in an embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 5, a preferred embodiment of a filter cartridge and a water purifier having the same according to the present utility model includes a housing 1, a central tube 2, and a filter module 3.
The casing 1 has a circumferential wall 100 extending along a first direction, a first end cover 110 and a second end cover 120 disposed at two ends of the circumferential wall 100, the first end cover 110 and the second end cover 120 together form a chamber of the casing 1, the first end cover 110 is provided with a raw water inlet 11 for inputting raw water to be filtered, and the second end cover 120 is provided with a purified water outlet 12 for outputting purified water after filtration and a waste water outlet 13 for outputting waste water after filtration. Meanwhile, the flow area in the cross section of the annular wall 100 is gradually reduced along the first direction from the first end cap 110 to the second end cap 120. And as shown in fig. 3, the longitudinal section of the annular wall 100 is in the shape of an isosceles trapezoid, the upper bottom dimension L3 of the isosceles trapezoid is 80-100 mm, the lower bottom dimension L4 is 90-110 mm, L4 is larger than L3, and the height H is 300-350 mm. Wherein L3 can be any value of 80-100 mm, such as L3 can be 80mm, 90mm, 100mm, etc.; l4 can be any value from 90 to 110mm, for example L4 can be 90mm, 100mm, 110mm, etc.; h may be any value from 300 to 350mm, e.g., H may be 300mm, 320mm, 350mm, etc.
The central tube 2 is disposed within the housing 1 in the first direction, and the first end 21 of the central tube 2 is closed and relatively close to the first end cap 110 of the housing 1, and the second end 22 of the central tube 2 is open and relatively close to the second end cap 120 of the housing 1 and communicates with the purified water outlet 12 of the housing 1. And water passing holes 20 penetrating through the wall thickness of the central tube 2 are circumferentially arranged on the wall of the central tube 2, and at least two groups of water passing holes 20 which are circumferentially arranged are arranged at intervals along the length direction of the central tube 2. And the flow area in the cross section of the central tube 2 is gradually reduced in the direction from the first end 21 to the second end 22 of the central tube 2. In this embodiment, the ratio of the flow area in the cross section of the central tube 2 to the flow area in the cross section of the annular wall 100 is 2/3 to 3/4 (the ratio may be any value between 2/3 to 3/4, such as the ratio may be 2/3, 3/4, 17/24, etc.).
The filter module 3 is provided in the housing 1 and circumferentially located at the periphery of the central tube 2, and the filter module 3 is arranged to filter raw water in the housing 1 so that the filtered purified water enters the central tube 2 through the water holes 20. In this embodiment, the filtration module 3 includes a reverse osmosis membrane 31 wound around the outer periphery of the central tube 2 from inside to outside to form a spiral, and the outer peripheral wall of the spiral is spaced apart from the annular wall 100 to form an annular wastewater gap 30 communicating with the wastewater outlet 13. And the spiral body is in a truncated cone shape with a large end and a small end, the large end is relatively adjacent to the first end cover 110 of the shell 1, and the small end is relatively adjacent to the second end cover 120 of the shell 1. The reverse osmosis membrane 31 before winding is isosceles trapezoid, and has a first bottom edge 311, a second bottom edge 312, and two waists 313 connecting the first bottom edge and the second bottom edge, wherein one of the waists 313 is opposite to and parallel to the wall of the central tube 2, the length of the first bottom edge 311 is greater than that of the second bottom edge 312, the first bottom edge 311 is arranged corresponding to the second end 22 of the central tube 2, and the second bottom edge 312 is arranged corresponding to the first end 21 of the central tube 2. In this embodiment, the outer diameter of the first end 21 of the center tube 2 is L1, the outer diameter of the second end 22 of the center tube 2 is L2, the length of the first bottom edge 311 is m1, the length of the second bottom edge 312 is m2, and the four are as follows: l2+m1=l1+m2. Please refer to fig. 5 in detail.
In this embodiment, the number of reverse osmosis membranes 31 (only one reverse osmosis membrane 31 is shown in the drawings for illustration), and the structure and winding manner of each reverse osmosis membrane 31 can be referred to the design of the patent application number 202221348072.1, i.e. the nano-filtration roll membrane cartridge (grant publication number CN 217868221U), and will not be described here.
The water purifier of this embodiment has the above-mentioned filter core, and the mounted position and the mounting means of filter core can refer to prior art design, and the description is omitted here.
When the filter element is used, the filter element can accelerate the fluid in the shell and the central tube, so that the internal pressure attenuation is reduced, the water outlet speed of purified water is improved, meanwhile, scale accumulation can be reduced, and the service life of the filter element is prolonged.
Claims (11)
1. A filter cartridge comprising:
a housing (1) having a chamber inside, a wall of which has a raw water inlet (11) into which raw water to be filtered is inputted, and a purified water outlet (12) from which purified water after filtration is outputted;
the central tube (2) is arranged in the shell (1), a first end (21) of the central tube (2) is closed, a second end (22) of the central tube is open and is communicated with a purified water outlet (12) on the shell (1), and water passing holes (20) penetrating through the wall thickness of the central tube (2) are formed in the tube wall of the central tube along the circumferential direction;
the filtering module (3) is arranged in the shell (1) and is positioned at the periphery of the central tube (2) along the circumferential direction, and the filtering module (3) is arranged to filter raw water in the shell (1) so that filtered purified water enters the central tube (2) through the water passing holes (20);
the method is characterized in that:
the flow area over the cross section of the central tube (2) decreases gradually in the direction from the first end (21) to the second end (22) of the central tube (2).
2. A filter cartridge as claimed in claim 1, wherein: the shell (1) is provided with a ring wall (100) extending along the longitudinal direction of the central tube (2) and encircling the periphery of the filter module (3), and a first end cover (110) and a second end cover (120) arranged at two ends of the ring wall (100), wherein the ring wall (100), the first end cover (110) and the second end cover (120) jointly form a cavity of the shell (1), the first end cover (110) is provided with the raw water inlet (11), and the second end cover (120) is provided with the purified water outlet (12).
3. A filter cartridge as claimed in claim 2, wherein: the second end cover (120) is also provided with a waste water outlet (13) for outputting filtered waste water.
4. A cartridge according to claim 3, wherein: the cross-section of the annular wall (100) tapers in the direction from the first end (21) to the second end (22) of the central tube (2).
5. A filter cartridge as claimed in claim 4, wherein: the longitudinal section of the annular wall (100) is in the shape of an isosceles trapezoid.
6. A filter cartridge as claimed in claim 4, wherein: the ratio of the flow area over the cross section of the central tube (2) to the flow area over the cross section of the annular wall (100) is 2/3 to 3/4.
7. A cartridge according to any one of claims 3 to 6, wherein: the filter module (3) comprises a reverse osmosis membrane (31) which is wound on the periphery of the central tube (2) from inside to outside to form a spiral body, and the peripheral wall of the spiral body is opposite to the annular wall (100) at intervals to form an annular waste water gap (30) communicated with the waste water outlet (13).
8. A filter cartridge as claimed in claim 7, wherein: the spiral body is in a truncated cone shape with a large end and a small end, the large end is relatively adjacent to a first end cover (110) of the shell (1), and the small end is relatively adjacent to a second end cover (120) of the shell (1).
9. A filter cartridge as claimed in claim 7, wherein: reverse osmosis membrane (31) before coiling is isosceles trapezoid, has first base (311) that parallels, second base (312) and links up two waists (313) of first, second base, one of them waist (313) with the pipe wall of center tube (2) is relative and parallels, the length of first base (311) is greater than the length of second base (312), and the second end (22) setting of center tube (2) is corresponding to first base (311), and first end (21) setting of center tube (2) is corresponding to second base (312).
10. A filter cartridge as claimed in claim 9, wherein: the outer diameter of the first end (21) of the central tube (2) is L1, the outer diameter of the second end (22) of the central tube (2) is L2, the length of the first bottom edge (311) is m1, the length of the second bottom edge (312) is m2, and the four conditions are that: l2+m1=l1+m2.
11. A water purifier having a filter element according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322356096.2U CN220351814U (en) | 2023-08-30 | 2023-08-30 | Filter element and water purifier with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322356096.2U CN220351814U (en) | 2023-08-30 | 2023-08-30 | Filter element and water purifier with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220351814U true CN220351814U (en) | 2024-01-16 |
Family
ID=89477016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322356096.2U Active CN220351814U (en) | 2023-08-30 | 2023-08-30 | Filter element and water purifier with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220351814U (en) |
-
2023
- 2023-08-30 CN CN202322356096.2U patent/CN220351814U/en active Active
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