CN210278451U - Water purifier and composite filter element thereof - Google Patents

Abstract

The utility model discloses a composite filter element, including secondary filter portion and cover in secondary filter portion periphery and along the axial stagger one filtering portion and the cubic filter portion of distribution of secondary filter portion, the one filtering water purification that one filtering portion filtered out flows into secondary filter portion, and the secondary filtering water purification that secondary filter portion filtered out flows into cubic filter portion. The primary filter portion and the secondary filter portion that correlate each other adopt nested setting, and the secondary filter portion and the tertiary filter portion that correlate also adopt nested setting, compare in current composite filter core, for the axial stagger setting mode of adaptation primary filter portion and tertiary filter portion, the length of secondary filter portion increases to some extent naturally to make filterable water increase of secondary filter portion unit interval, also the filter rate of secondary filter portion is faster promptly, consequently the utility model provides a composite filter element filter rate is faster. The utility model discloses still disclose a water purifier that contains above-mentioned composite filter element.

Description

Water purifier and composite filter element thereof

Technical Field

The utility model relates to a purify technical field, in particular to composite filter element. The utility model discloses still relate to a water purifier who contains composite filter element.

Background

In recent years, the safety problem of drinking water has been gradually paid more attention, and in view of that the water purifier can effectively filter out impurities such as rust, sand, colloid and the like in tap water and adsorb chemical agents such as residual chlorine, odor, off-color, pesticides and the like in tap water, so as to purify water quality and improve water source, the consumption demand of the water purifier is increasing.

The filter element is usually arranged in the water purifier, and the filter element of the existing water purifier mostly adopts the composite filter element in consideration of the convenience of filter element replacement and the compactness of the filter element structure. The existing composite filter element usually comprises a plurality of filter elements, such as an activated carbon filter element or a reverse osmosis membrane filter element, and tap water flows through the filter elements in sequence to realize filtration.

Specifically, the existing composite filter element includes a primary filter portion, a secondary filter portion and a tertiary filter portion, the primary filter portion is usually sleeved on the periphery of the secondary filter portion or simultaneously sleeved on the secondary filter portion and the tertiary filter portion, and the secondary filter portion and the tertiary filter portion are usually distributed along the axial direction in a staggered manner. During filtering, coarse filtered water filtered by the coarse filtering component flows into the secondary filtering part, and fine filtered water filtered by the secondary filtering part flows into the third filtering part along the axial direction.

Because only the secondary filter portion and the tertiary filter portion that correlate each other stagger along the axial and set up, for matcing with the tertiary filter portion, the required length of secondary filter portion is shorter relatively, and the water that the secondary filter portion can in the unit interval is limited to lead to composite filter element's filter speed too slow.

Therefore, how to optimize the structure of the existing composite filter element to accelerate the filtering speed is a technical problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present invention is to provide a water purifier and a composite filter element thereof, in which the water body that can be filtered by the secondary filter unit per unit time is increased, and the filtering speed is faster.

The specific scheme is as follows:

the utility model provides a composite filter element, including secondary filter portion and cover in secondary filter portion periphery and along the axial stagger one filtering portion and the cubic filter portion of distribution of secondary filter portion, the one filtering water purification that one filtering portion filtered out flows into secondary filter portion, and the secondary filtering water purification that secondary filter portion filtered out flows into cubic filter portion.

Preferably, the second-filtered clean water flows into the center of the third filter part through the end of the second filter part and is discharged from the outside of the third filter part after being filtered by the third filter part.

Preferably, still including the filter flask body that overlaps in secondary filter portion periphery and be used for separating primary filter portion and tertiary filter portion, the filter flask body is equipped with and is used for supplying secondary filter water purification to flow into the secondary filter water purification export in tertiary filter portion center, and the filter flask body still is equipped with and filters the secondary filter water export independent with the secondary filter water purification export and be used for guiding the secondary filter waste water that secondary filter portion filtered out to discharge the filter flask body secondary filter waste water export.

Preferably, the filter also comprises a third filtering shell which is sleeved on the periphery of the third filtering part and is propped against a supporting clapboard arranged on the periphery of the filter flask body so as to separate the first filtering part from the third filtering part.

Preferably, still include the shutoff end cover that sets firmly in the one end of first filter house keeping away from tertiary filter house and offset with secondary filter house.

Preferably, the filter comprises a primary filter end cover which is sleeved on the filter flask body, is abutted against the first side of the support clapboard and is used for supporting the primary filter part.

Preferably, the filter device also comprises a third filtering end cover which is sleeved on the filter bottle body, is abutted against the second side of the supporting clapboard and is used for supporting the third filtering part and the third filtering shell.

Preferably, the filter bottle further comprises a supporting end cover which is arranged opposite to the third filtering end cover, sleeved at one end of the filter bottle body close to the third filtering part and used for supporting the third filtering part.

Preferably, the water purifier further comprises an outer shell covering the peripheries of the primary filtering part and the tertiary filtering part, and the outer shell is provided with a raw water inlet for raw water to flow into the primary filtering part, a waste water outlet communicated with the secondary filtering waste water outlet and a purified water outlet for discharging tertiary filtering purified water filtered by the tertiary filtering part.

The utility model also provides a water purifier, including above-mentioned arbitrary composite filter element.

Compared with the prior art, the utility model provides a composite filter element includes primary filter portion, secondary filter portion and cubic filter portion.

The primary filtering part and the tertiary filtering part are sleeved on the periphery of the secondary filtering part, the primary filtering part and the tertiary filtering part are arranged in a staggered way along the axial direction of the secondary filtering part, the primary filtered purified water filtered by the primary filtering part flows into the secondary filtering part, the secondary filtered purified water filtered by the secondary filtering part flows into the tertiary filtering part, therefore, the primary filtering part and the secondary filtering part which are mutually related are nested, and the secondary filtering part and the tertiary filtering part which are mutually related are also nested, compared with the prior composite filter element, the length of the secondary filtering part is naturally increased in order to adapt to the axial staggered arrangement mode of the primary filtering part and the tertiary filtering part, thereby make the filterable water increase of secondary filter portion unit interval, also the filter rate of secondary filter portion is faster, consequently, the utility model provides a composite filter element filter rate is very fast.

The utility model provides a water purifier who contains above-mentioned composite filter element has the same beneficial effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a cross-sectional structural view of a composite filter element according to an embodiment of the present invention;

FIG. 2 is another cross-sectional structural view;

FIG. 3 is a block diagram of the filter cartridge body of FIG. 1;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is a sectional view taken along line A-A of FIG. 4;

fig. 6 is a sectional view taken along line B-B in fig. 4.

In the drawing, solid arrows indicate the flow direction of the filtrate, and dotted arrows indicate the flow direction of the waste liquid.

The reference numbers are as follows:

the device comprises a filter flask body 1, a primary filter part 2, a secondary filter part 3, a tertiary filter part 4, a tertiary filter casing 5, a plugging end cover 6, a primary filter end cover 7, a tertiary filter end cover 8, a supporting end cover 9, a bottle cap 10, an outer shell 11, a primary filter purified water flow passage 12, a secondary filter purified water flow passage 13, a raw water flow passage 14 and a tertiary filter purified water flow passage 15;

a supporting groove 101, a secondary filtered pure water outlet 102, a secondary filtered waste water outlet 103 and a supporting clapboard 104;

a raw water inlet 111, a waste water outlet 112, a purified water outlet 113, an annular raw water abutting plate 114, a waste water accommodating chamber 115, an annular purified water abutting plate 116, and an annular purified water accommodating chamber 117;

a secondary filtering filter element 31, a secondary filtering water collecting pipe 32, a secondary filtering water collecting hole 33, a secondary filtering water passing hole 34, a secondary filtering abutting pipe 35 and a drainage end cover 36;

a radial abutment sleeve 91;

an annular raw water partition plate 51.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 6, fig. 1 is a cross-sectional structural view of a composite filter element according to an embodiment of the present invention; FIG. 2 is another cross-sectional structural view; FIG. 3 is a block diagram of the filter cartridge body of FIG. 1; FIG. 4 is a top view of FIG. 3; FIG. 5 is a sectional view taken along line A-A of FIG. 4; fig. 6 is a sectional view taken along line B-B in fig. 4.

It should be noted that, the key improvement point of the present invention is to improve the layout of the primary filter unit 2, the secondary filter unit 3 and the tertiary filter unit 4, to prolong the length of the secondary filter unit 3, and to accelerate the filtering speed.

The utility model provides a composite filter element, including a filtering part 2, secondary filter part 3 and cubic filter part 4. Wherein, primary filter portion 2 and tertiary filter portion 4 all overlap in the periphery of secondary filter portion 3, and primary filter portion 2 and tertiary filter portion 4 distribute along the axial stagger of secondary filter portion 3 to make the primary filter water that primary filter portion 2 filtered out flow into secondary filter portion 3, the secondary filter water that secondary filter portion 3 filtered out flows into tertiary filter portion 4.

In this embodiment, the sum of the lengths of the primary filter unit 2 and the tertiary filter unit 4 is substantially equal to the length of the secondary filter unit 3, and the primary filter unit 2, the secondary filter unit 3, and the tertiary filter unit 4 are each cylindrical. Specifically, the primary filter portion 2, the secondary filter portion 3, and the tertiary filter portion 4 are coaxially disposed.

From this can release, the nested setting of the primary filtration portion 2 and the secondary filtration portion 3 adoption of correlation, and the secondary filtration portion 3 and the tertiary filtration portion 4 of correlation also adopt nested setting, compare in current composite filter core, for the axial stagger setting mode of adaptation primary filtration portion 2 and tertiary filtration portion 4, the length of secondary filtration portion 3 increases to some extent naturally to make the filterable water increase of 3 unit interval of secondary filtration portion, also the filter velocity of secondary filtration portion 3 is faster, consequently, the utility model provides a composite filter core filter velocity is faster.

For convenient overall arrangement primary filter 2, secondary filter 3 and cubic filter 4, the utility model discloses still including the filter flask body 1 of cover in 3 peripheries of secondary filter to separate primary filter 2 and cubic filter 4.

In this embodiment, the filter flask body 1 is preferably a hollow cylindrical structure, and the secondary filter part 3 is installed at the center of the filter flask body 1. With the current view of the attached drawing 1 as the standard, the center of the filter flask body 1 is close to one end of the third filtering part 4, namely the bottom of the center of the filter flask body 1, and a supporting groove 101 for supporting the second filtering part 3 is fixedly arranged, the supporting groove 101 is specifically a cylindrical groove, and the outer diameter of the supporting groove 101 is smaller than that of the filter flask body 1.

The secondary filter part 3 includes a secondary filter element 31 and a secondary filter water collecting pipe 32, and the secondary filter water collecting pipe 32 is arranged at the center of the secondary filter element 31. The center of the secondary filtering water collecting pipe 32 is provided with a secondary filtering water collecting hole 33 for the circulation of secondary filtering purified water, the side wall of the secondary filtering water collecting pipe 32 is provided with a secondary filtering water passing hole 34 for communicating the secondary filtering filter element 31 and the secondary filtering water collecting hole 33, and the secondary filtering purified water filtered by the secondary filtering filter element 31 flows into the secondary filtering water collecting hole 33 through the secondary filtering water passing hole 34. The secondary filtration cartridge 31 is preferably a reverse osmosis membrane, but is not limited thereto.

The length of secondary filter collector pipe 32 is greater than the length of secondary filter core 31, and the both ends of secondary filter collector pipe 32 all surpass secondary filter core 31, and correspondingly, the bottom of secondary filter collector pipe 32 has the secondary filter butt joint pipe 35 that surpasss secondary filter core 31 and set up, but secondary filter butt joint pipe 35 does not set up secondary filter water hole 34, and secondary filter butt joint pipe 35 inserts in supporting groove 101.

In order to prevent mixed pollution between the secondary filtered clean water and the secondary filtered wastewater filtered by the secondary filtering part 3, the outer circumferential surface of the secondary filtering abutting pipe 35 abuts against the inner side surface of the supporting groove 101 so as to separate the secondary filtered clean water from the secondary filtered wastewater. Further, a sealing element which is respectively abutted against the secondary filtering abutting pipe 35 and the supporting groove 101 is arranged between the secondary filtering abutting pipe 35 and the supporting groove 101, so that secondary filtering purified water and secondary filtering waste water are further prevented from being polluted. Here, the sealing member may be a rubber sealing ring fitted around the outer periphery of the secondary filter abutting pipe 35, but is not limited thereto.

In order to realize the circulation of the filtrate between the secondary filter part 3 and the tertiary filter part 4, the bottom of the filter flask body 1 is provided with a secondary filtered pure water outlet 102 for allowing the secondary filtered pure water filtered out from the center of the secondary filter part 3 to flow into the center of the tertiary filter part 4, and the secondary filtered pure water outlet 102 is preferably a radial through hole penetrating along the side wall of the bottom of the support groove 101. The bottom of the filter flask body 1 is provided with a plurality of secondary filtered purified water outlets 102 which are uniformly distributed in a circular ring shape.

The filter flask body 1 is further provided with a secondary filtration waste water outlet 103 for guiding the secondary filtration waste water filtered by the secondary filtration part 3 to be discharged out of the filter flask body 1. In this embodiment, the bottom of the filter flask body 1 is fixedly provided with an annular connecting flange for connecting with the supporting groove 101, the secondary filtered waste water outlet 103 is preferably a through hole passing through the annular connecting flange along the axial direction of the filter flask body 1, and the annular connecting flange is provided with a plurality of secondary filtered waste water outlets 103 uniformly arranged in a circular ring shape, so that the secondary filtered purified water outlet 102 and the secondary filtered purified water outlet 102 are independent from each other.

The primary filtering part 2 and the tertiary filtering part 4 are independently sleeved at two ends of the filter flask body 1. The primary filter part 2 is preferably a pre-activated carbon rod for filtering raw water into primary filtered purified water. The secondary filtering part 3, the filter flask body 1 and the primary filtering part 2 are coaxially arranged from inside to outside.

In order to realize the circulation of the filtrate between the primary filtering part 2 and the secondary filtering part 3, the utility model discloses still including setting firmly the drainage end cover 36 on the 3 tops of secondary filtering part. In this embodiment, the drainage end cap 36 passes through the secondary filtering water collecting pipe 32 and is fixedly sleeved on the top end of the secondary filtering filter element 31 in an interference connection manner, so that an annular drainage port is formed between the drainage end cap 36 and the secondary filtering water collecting pipe 32, and the primary filtering purified water flows into the secondary filtering part 3 through the annular drainage port. Further, the length of the filter flask body 1 is smaller than that of the secondary filter part 3, so that the part of the secondary filter part 3, which exceeds the top of the filter flask body 1, is opposite to the primary filter part 2, and a flow channel is provided for the primary filtered purified water to flow into the secondary filter part 3.

The third filter portion 4 is preferably a rear activated carbon rod, but is not limited thereto.

During filtering, the primary filtered clean water filtered out from the center of the primary filtering part 2 flows into the secondary filtering part 3 through the annular drainage port, and the primary filtered clean water is filtered by the secondary filtering part 3 to generate secondary filtered clean water and secondary filtered wastewater; the secondary filtered clean water flows along the center of the secondary filtering part 3 and flows into the center of the tertiary filtering part 4 through the secondary filtered clean water outlet 102, so that the secondary filtered clean water is filtered by the tertiary filtering part 4, and the filtering is realized; the secondary filtered waste water flows along the secondary filtering portion 3 and is discharged from the filter flask body 1 through the secondary filtered waste water outlet 103. Because the secondary filtration pure water outlet 102 and the secondary filtration waste water outlet 103 are independently arranged, the secondary filtration pure water and the secondary filtration waste water can be effectively prevented from being polluted, and the possibility of filtering the filtrate smoothly is provided.

In order to make the primary filter part 2 and the tertiary filter part 4 independent, preferably, a supporting partition plate 104 is fixedly arranged on the periphery of the filter flask body 1, and two sides of the supporting partition plate 104 are respectively used for supporting the primary filter part 2 and the tertiary filter part 4, so that the primary filter part 2 and the tertiary filter part 4 are initially separated. Specifically, the filter flask body 1 and the supporting partition plate 104 are an integral structure, and the supporting partition plate 104 is a circular thin plate disposed near the top end of the filter flask body 1.

Further, the utility model discloses still filter the shell 5 including the cubic that overlaps in the cubic filter house 4 periphery and offsets with the supporting baffle 104 that the filter flask body 1 periphery was established, specifically, the cubic filters the shell and locates supporting baffle 104 and be close to cubic filter house 4 one side to separate filter house 2 and cubic filter house 4.

For preventing the raw water and the primary filtration water from polluting, the utility model discloses still keep away from the shutoff end cover 6 of the one end of the supporting baffle 104 including setting firmly in the primary filtration portion 2. The plugging end cap 6 is fixed to the top end of the primary filter portion 2 by interference fit, taking the current view of fig. 1 as a standard. In order to prevent the pollution between the primary filtration and the secondary filtration, the plugging end cover 6 is also abutted against the top end of the secondary filtration water collecting pipe 32. Further, the top of secondary filter collector pipe 32 has still set firmly the shutoff board, and the shutoff board is less than the top setting of secondary filter core 31, prevents that the secondary from filtering the water purification and crossing water hole 34 from flowing out to secondary filter portion 3 outside, further prevents that the secondary from filtering the water purification and being polluted.

The arrangement of the support partition plate 104 and the plugging end cap 6 enables a primary filtered purified water flow passage 12 through which primary filtered purified water flows to be formed between the center of the primary filter unit 2 and the outer peripheral surface of the secondary filter unit 3.

For limiting the primary filtering portion 2, the utility model discloses still include with the cover in the filter flask body 1 and with the primary filter end cover 7 that the first side of supporting the baffle 104 offseted, the first side of here supporting the baffle 104 specifically means the supporting the baffle 104 and is close to one side of a filtering portion 2. The primary filtering end cover 7 is arranged opposite to the blocking end cover 6 and is respectively abutted against two ends of the primary filtering part 2, so that the movement of the primary filtering part 2 is limited. Specifically, the primary filter end cap 7 and the plugging end cap 6 each have a primary annular limiting groove for placing the primary filter part 2.

In order to prevent the primary filtered purified water from polluting the raw water, sealing members are respectively arranged between the primary filtering end cover 7 and the filter flask body 1 to be abutted against the primary filtering purified water and the raw water so as to separate a primary filtering purified water flow passage 12 from a raw water flow passage 14. The sealing element can here be a rubber sealing ring which is fitted over the outer circumference of the filter flask body 1.

In order to realize that fixed cubic filter house 4 and cubic filter shell 5 strain, the utility model discloses still including the cubic filter end cover 8 that overlaps in filter flask body 1 and offsets with the second side of supporting diaphragm 104, the second side of supporting diaphragm 104 here indicates that supporting diaphragm 104 is close to one side of cubic filter house 4. One side of the third filter end cover 8, which is far away from the support partition 104, is provided with an inner annular support groove and an outer annular support groove, which are coaxially arranged from inside to outside. The tertiary filter portion 4 is installed in the inner annular support groove, and the tertiary filter housing 5 is installed in the outer annular support groove.

For realizing injecing cubic filter portion 4, the utility model discloses still include the support end cover 9 that sets up relatively with cubic filter end cover 8, support end cover 9 overlaps in filter flask body 1 and is close to 4 one ends of cubic filter portion. Specifically, the supporting end cap 9 includes an axial supporting flange and a radial abutting sleeve 91, the axial supporting flange abuts against the bottom end of the tertiary filter portion 4, and the radial abutting sleeve 91 abuts against the outer peripheral surface of the bottom end of the filter flask body 1. Further specifically, the axial support flange has a third annular limit groove opposite to the outer annular support groove of the third filter end cap 8, and both ends of the third filter house 4 abut against the third annular limit groove and the outer annular support groove, respectively, thereby restricting the movement of the third filter house 4.

In order to prevent the secondary filtration clean water and the secondary filtration waste water from being polluted, a sealing element which is respectively abutted against the radial abutting sleeve 91 and the filter flask body 1 is arranged between the radial abutting sleeve 91 and the filter flask body 1, and the sealing element can be a rubber sealing ring sleeved on the outer peripheral surface of the bottom end of the filter flask body 1.

In order to realize circulation of the secondary filtered purified water, a secondary filtered purified water flow passage 13 is arranged between the outer peripheral surface of the filter bottle body 1 and the inner side surface of the supporting end cover 9, and the secondary filtered purified water flow passage 13 is L-shaped and can communicate the secondary filtered purified water outlet 102 with the center of the tertiary filtering part 4.

The utility model discloses still including covering in the shell body 11 of 2 and the 4 peripheries of cubic filter house of a filter house, bottle lid 10 is installed on the top of shell body 11, and bottle lid 10 can be dismantled with shell body 11 through threaded connection's mode and be connected as an organic wholely to each part in convenient dismouting shell body 11. In addition, the filter flask body 1, the primary filtering part 2, the secondary filtering part 3 and the tertiary filtering part 4 are all arranged in the outer shell 11, so that the risk of water leakage is reduced, and the safety is high.

When each filter core of dismouting, only need to unscrew bottle lid 10 from shell body 11 alright dismantle primary filter portion 2 and secondary filter portion 3, then unscrew filter flask body 11 in shell body 11 alright dismantle cubic filter portion 4, obviously, the dismantlement degree of difficulty of each filter portion is less, is favorable to promoting to dismantle the convenience.

A raw water flow passage 14 is provided between the outer casing 11 and the primary filter unit 2 and between the outer casing 11 and the tertiary filter unit 4, so that raw water can smoothly flow into the primary filter unit 2 from the outer periphery of the primary filter unit 2. Of course, the outer diameter of the support partition 104 is smaller than the inner diameter of the central cavity of the outer casing 11, so that the raw water flow path 14 between the outer casing 11 and the primary filter unit 2 and between the outer casing 11 and the tertiary filter unit 4 can be communicated. Accordingly, the outer case 11 is provided with a raw water inlet 111 communicating with the raw water flow passage 14, and the raw water inlet 111 is specifically provided at the bottom end of the outer case 11.

In order to prevent the contamination of the raw water and the tertiary filtered purified water, an annular raw water abutting plate 114 is provided on an inner side surface of a bottom of the outer case 11, and accordingly, an annular raw water partition plate 51 abutting against an inner side surface of the annular raw water abutting plate 114 is provided on a bottom end of the tertiary filtered casing 5 to partition the raw water flow passage 14 and the tertiary filtered purified water flow passage 15. Further, the annular raw water abutment plate 114 and the annular raw water partition plate 51 are further mounted to seal members respectively abutting against them, and the seal member here may be a rubber seal ring which is fitted around the outer periphery of the annular raw water partition plate 51 and abuts against the annular raw water abutment plate 114.

The wastewater is discharged, the outer shell 11 is provided with a wastewater outlet 112 communicated with the secondary filtering wastewater outlet 103, and the wastewater outlet 112 and the raw water inlet 111 are independently arranged. In order to prevent the wastewater from overflowing, a wastewater containing cavity 115 for storing secondary filtered wastewater is arranged between the bottom of the supporting groove 101 of the filter flask body 1 and the outer shell body 11, and the wastewater outlet 112 is communicated with the wastewater containing cavity 115.

In this embodiment, a third filtered purified water flow passage 15 through which third filtered purified water flows is provided between the outer periphery of the third filter unit 4 and the third filter casing 5, and the third filtered purified water flows out from the outer periphery of the third filter unit 4. Correspondingly, shell body 11 is equipped with annular water purification butt joint board 116, and annular water purification butt joint board 116 offsets with the outer peripheral face of radial butt joint cover 91, prevents that secondary filter waste water from taking place to pollute with the tertiary water purification that filters.

Further, a sealing element is further disposed between the inner side surface of the annular clean water abutting plate 116 and the outer circumferential surface of the radial abutting sleeve 91, and the sealing element is a rubber sealing ring sleeved on the outer circumference of the radial abutting sleeve 91.

An annular purified water accommodating cavity 117 for storing the third filtered purified water is formed between the annular purified water abutting plate 116 and the annular raw water partition plate 51, and the annular purified water accommodating cavity 117 is communicated with the third filtered purified water flow passage 15. In order to discharge the third filtered purified water, the outer shell 11 is provided with a purified water outlet 113, and the purified water outlet 113 is communicated with the third filtered purified water flow passage 15 through an annular purified water accommodating cavity 117. In addition, the purified water outlet 113 is provided independently of the wastewater outlet 112 and the raw water inlet 111, respectively.

The utility model also provides a water purifier, still include above-mentioned composite filter element, concrete the same beneficial effect.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a composite filter element, its characterized in that, including secondary filter portion (3) with overlap in secondary filter portion (3) periphery and edge primary filter portion (2) and tertiary filter portion (4) that the axial stagger of secondary filter portion (3) distributes, the primary filter water that primary filter portion (2) filtered out flows into secondary filter portion (3), the secondary filter water that secondary filter portion (3) filtered out flows into tertiary filter portion (4).

2. The composite filter element according to claim 1, wherein the secondary filtered clean water flows into the center of the tertiary filter portion (4) through the end of the secondary filter portion (3) and is discharged from the outside of the tertiary filter portion (4) after being filtered by the tertiary filter portion (4).

3. The composite filter element according to claim 2, further comprising a filter body (1) which is sleeved on the periphery of the secondary filter part (3) and is used for separating the primary filter part (2) from the tertiary filter part (4), wherein the filter body (1) is provided with a secondary filtered purified water outlet (102) for allowing the secondary filtered purified water to flow into the center of the tertiary filter part (4), and the filter body (1) is further provided with a secondary filtered waste water outlet (103) which is independent of the secondary filtered purified water outlet (102) and is used for guiding the secondary filtered waste water filtered by the secondary filter part (3) to be discharged out of the filter body (1).

4. The composite filter element according to claim 3, further comprising a third filter shell (5) which is sleeved on the periphery of the third filter part (4) and is abutted against a support clapboard (104) arranged on the periphery of the filter flask body (1) to separate the first filter part (2) and the third filter part (4).

5. The composite filter element according to claim 3, further comprising a blocking end cap (6) fixedly arranged at one end of the primary filter part (2) far away from the tertiary filter part (4) and abutting against the secondary filter part (3).

6. The composite filter element according to claim 4, further comprising a primary filter end cap (7) which is sleeved on the filter flask body (1) and is abutted against the first side of the support baffle (104) and is used for supporting the primary filter part (2).

7. The composite filter element according to claim 6, further comprising a third filter end cap (8) which is sleeved on the filter flask body (1) and is abutted against the second side of the support baffle (104) and is used for supporting the third filter part (4) and the third filter shell (5).

8. The composite filter element according to claim 7, further comprising a support end cap (9) which is arranged opposite to the third filter end cap (8) and is sleeved on one end of the filter flask body (1) close to the third filter part (4) and is used for supporting the third filter part (4).

9. The composite filter element according to any one of claims 3 to 7, further comprising an outer shell (11) covering the peripheries of the primary filter part (2) and the tertiary filter part (4), wherein the outer shell (11) is provided with a raw water inlet (111) for raw water to flow into the primary filter part (2), a waste water outlet (112) communicated with the secondary filtered waste water outlet (103), and a purified water outlet (113) for discharging tertiary filtered purified water filtered by the tertiary filter part (4).

10. A water purifier comprising the composite filter element according to any one of claims 1 to 9.

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