CN215924578U - Filtering device containing ultrafiltration membrane combined filter element - Google Patents

Filtering device containing ultrafiltration membrane combined filter element Download PDF

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Publication number
CN215924578U
CN215924578U CN202122661300.2U CN202122661300U CN215924578U CN 215924578 U CN215924578 U CN 215924578U CN 202122661300 U CN202122661300 U CN 202122661300U CN 215924578 U CN215924578 U CN 215924578U
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China
Prior art keywords
filter element
ultrafiltration membrane
water
purified water
carbon filter
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CN202122661300.2U
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Chinese (zh)
Inventor
胡兴亿
缪虹娟
韩小娟
黄剑升
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Foshan Shunde Yingfengtai Environmental Protection Technology Co ltd
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Foshan Shunde Yingfengtai Environmental Protection Technology Co ltd
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Abstract

The utility model discloses a filtering device containing an ultrafiltration membrane combined filter element, which comprises a shell and a combined filter element; the combined filter element comprises a primary filter element, a preposed activated carbon filter element, an ultrafiltration membrane filter element and a postposition activated carbon filter element which are sequentially sleeved and arranged in the shell from outside to inside; the ultrafiltration membrane filter element comprises an ultrafiltration membrane which is a folding ultrafiltration membrane and the working water pressure is 0.1-0.7 MPa; the water distributor also comprises a water distribution cover, and the middle part of the water distribution cover is provided with a purified water output pipe; the filtering end of the rear active carbon filter element is communicated with the upper end of the purified water output pipe, the lower end of the purified water output pipe is communicated with the outside, purified water purified by quadruple filtration can be quickly output, an ultrafiltration membrane in the ultrafiltration membrane filter element can remove impurities in the water to be purified, trace elements and mineral substances beneficial to a human body in the water to be purified can be reserved, the water purifying device is suitable for further filtering and purifying mineral water or drinking water in the environment with the working water pressure of 0.1-0.7MPa, the structure is compact, and the purified water output speed is high.

Description

Filtering device containing ultrafiltration membrane combined filter element
Technical Field
The utility model relates to the technical field of water purification equipment, in particular to a filtering device containing an ultrafiltration membrane combined filter element.
Background
The multi-stage filtering water purifier containing the RO membrane in the prior art has a complex structure, low bearable working water pressure and low purified water output speed, and the RO membrane can filter trace elements and mineral substances in water which are beneficial to a human body, so that the multi-stage filtering water purifier is not suitable for filtering and purifying mineral water or drinking water with high working water pressure.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks, the present invention provides a filter device for purifying mineral water or drinking water at a high working water pressure, which has the advantages of compact structure and high output speed of purified water.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a filter device containing an ultrafiltration membrane combined filter element comprises a shell and the combined filter element;
the combined filter element comprises a primary filter element, a front active carbon filter element, an ultrafiltration membrane filter element and a rear active carbon filter element which are sequentially sleeved and arranged in the shell from outside to inside; the ultrafiltration membrane of the ultrafiltration membrane filter core is a folded ultrafiltration membrane and the working water pressure is 0.1-0.7 MPa;
the initial filtering end of the front activated carbon filter element is communicated with the filtering end of the primary filter element, the filtering end of the front activated carbon filter element is communicated with the initial filtering end of the ultrafiltration membrane filter element, and the filtering end of the ultrafiltration membrane filter element is communicated with the initial filtering end of the rear activated carbon filter element;
the water distributor also comprises a water distribution cover, and the middle part of the water distribution cover is provided with a purified water output pipe;
the filtering end of the rear active carbon filter element is communicated with the upper end of the purified water output pipe, and the lower end of the purified water output pipe is communicated with the outside.
Preferably, the primary filter element is a PP cotton filter element, a microporous ceramic sintered filter element, a microporous diatomite sintered filter element or a microporous molecular sieve sintered filter element;
the outer side surface of the primary filter element is a filter starting end, and the inner side surface of the primary filter element is a filter end;
the inner side surface of the primary filter element surrounds the outer side surface of the front active carbon filter element.
Preferably, the aperture of the ultrafiltration micropores of the folded ultrafiltration membrane is 0.01-0.2 microns.
Specifically, the middle part of the water diversion cover extends downwards to form the purified water output pipe;
the upper end of the purified water output pipe extends upwards and protrudes outwards from the top surface of the water diversion cover, the lower end surface of the rear activated carbon filter element is abutted against the top surface of the water diversion cover, and the inner side surface of the rear activated carbon filter element is abutted against the outer side surface of the upper end part of the purified water output pipe;
the purified water output port is positioned at the lower end part of the purified water output pipe, and the filtering end of the rear activated carbon filter element is communicated with the outside through the purified water output port.
Furthermore, the lower end surfaces of the primary filter element and the front activated carbon filter element are adjacently propped against the top surface of the water distribution cover;
the edge of the water diversion cover extends upwards to surround the lower end part of the primary filter element, and the inner side surface of the edge of the water diversion cover is abutted to the outer side surface of the lower end part of the primary filter element.
Further, the device also comprises an inner upper cover;
the inner upper cover is detachably sleeved on the tops of the primary filter element, the front activated carbon filter element, the ultrafiltration membrane filter element and the rear activated carbon filter element;
the bottom surface of the inner upper cover covers and abuts against the top surfaces of the primary filter element, the front activated carbon filter element, the ultrafiltration membrane filter element and the rear activated carbon filter element, the edge of the inner upper cover extends downwards and surrounds the upper end part of the primary filter element, and the inner side surface of the edge of the inner upper cover abuts against the outer side surface of the upper end part of the primary filter element;
the top surface of the inner upper cover is abutted against the inner top surface of the shell.
Specifically, the inner upper cover is provided with an upper positioning ring and an upper positioning boss;
the upper positioning boss is positioned in the middle of the bottom surface of the inner upper cover, the upper positioning boss extends downwards into a gap enclosed by the inner side surface of the rear active carbon filter element, and the outer side surface of the upper positioning boss is abutted against the inner side surface of the upper end of the rear active carbon filter element;
go up the holding ring and be located go up location boss lateral surface with between the medial surface of the edge of interior upper cover, the upper end of going up the holding ring with the bottom surface of interior upper cover is connected, the lower extreme of going up the holding ring stretches into downwards leading active carbon filter core with clearance between the milipore filter core, the lateral surface of going up the holding ring with the medial surface of leading active carbon filter core offsets, the medial surface of going up the holding ring with the medial surface of milipore filter core offsets.
Furthermore, the water distribution cover is also provided with a lower positioning ring;
the lower positioning ring is positioned between the outer side surface of the purified water output pipe and the inner side surface of the edge of the water diversion cover, and the lower end of the lower positioning ring is connected with the top surface of the water diversion cover;
the upper end of lower holding ring upwards stretches into leading active carbon filter core with clearance between the milipore filter core, the lateral surface of holding ring down with the medial surface of leading active carbon filter core offsets, the medial surface of holding ring down with the medial surface of milipore filter core offsets.
Further, the shell is provided with a water inlet pipe and a water outlet pipe;
the water inlet and outlet pipe is positioned at the lower end of the shell, and the inner side surface of the water inlet and outlet pipe surrounds the outer side surface of the purified water output pipe;
a gap is arranged between the inner side surface of the water inlet and outlet pipe and the outer side surface of the purified water output pipe, and the gap between the inner side surface of the water inlet and outlet pipe and the outer side surface of the purified water output pipe is communicated with the primary filtering end of the primary filter element.
Preferably, the device also comprises an output check valve and an input check valve;
the output check valve is arranged at the purified water output port and is a check valve which is internally communicated in a one-way manner; the input check valve is installed between the inner side surface of the water inlet and outlet pipe and the outer side surface of the purified water output pipe.
The technical scheme of the utility model has the beneficial effects that: the filter device containing the ultrafiltration membrane combined filter element can rapidly output purified water purified by quadruple filtration, the ultrafiltration membranes in the ultrafiltration membrane filter element can remove impurities in water to be purified, can also thoroughly filter harmful substances such as bacteria, rust and colloid in the water to be purified, and retain trace elements and mineral substances beneficial to human bodies in the water to be purified, is suitable for further filtration and purification of mineral water or drinking water in the environment with the working water pressure of 0.1-0.7MPa, and has the advantages of compact structure and high purified water output speed.
Drawings
Fig. 1 is a schematic sectional view of a filter device including an ultrafiltration membrane combined filter element according to an embodiment of the present invention;
FIG. 2 is a schematic view of the combined cartridge of FIG. 1;
FIG. 3 is a cross-sectional view of the composite cartridge of FIG. 2;
FIG. 4 is a schematic view of the cartridge of FIG. 2 containing an ultrafiltration membrane cartridge and a post-activated carbon cartridge;
fig. 5 is a partial enlarged view of a portion a of fig. 3;
fig. 6 is a partial enlarged view of a portion B of fig. 3;
wherein: a housing 1; a combined filter element 2; inputting a check valve 3; an output check valve 4; a water inlet and outlet pipe 11; a primary cartridge 21; a front activated carbon filter element 22; an ultrafiltration membrane cartridge 23; a rear active carbon filter element 24; an inner upper cover 25; an upper positioning ring 251; an upper positioning boss 252; a water diversion cover 26; a purified water output pipe 261; a lower retaining ring 262 and a purified water outlet 2611.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to fig. 1 to 6.
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, so to speak, as communicating between the two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
A filter device containing an ultrafiltration membrane combined filter element comprises a shell 1 and a combined filter element 2;
the combined filter element 2 comprises a primary filter element 21, a front active carbon filter element 22, an ultrafiltration membrane filter element 23 and a rear active carbon filter element 24 which are sequentially sleeved and arranged in the shell 1 from outside to inside; the ultrafiltration membrane of the ultrafiltration membrane filter element 23 is a folded ultrafiltration membrane and the working water pressure is 0.1-0.7 MPa;
the initial filtering end of the front activated carbon filter element 22 is communicated with the filtering end of the primary filter element 21, the filtering end of the front activated carbon filter element 22 is communicated with the initial filtering end of the ultrafiltration membrane filter element 23, and the filtering end of the ultrafiltration membrane filter element 23 is communicated with the initial filtering end of the rear activated carbon filter element 24;
the water distributor also comprises a water distributing cover 26, and a purified water output pipe 261 is arranged in the middle of the water distributing cover 26;
the filtering end of the rear active carbon filter element 24 is communicated with the upper end of the purified water output pipe 261, and the lower end of the purified water output pipe 261 is communicated with the outside.
As shown in fig. 1 to 6, the filtering apparatus including the ultrafiltration membrane combined filter element of the present invention is provided with a primary filter element 21, a front activated carbon filter element 22, an ultrafiltration membrane filter element 23, and a rear activated carbon filter element 24, which are sequentially installed in the housing 1 from outside to inside, and can rapidly output purified water purified by quadruple filtration, and the ultrafiltration membrane in the ultrafiltration membrane filter element 23 can remove impurities in water to be purified, and can also thoroughly filter harmful substances such as bacteria, rust, and colloid in the water to be purified, and retain trace elements and minerals in the water to be purified, which are beneficial to human body, and is suitable for further filtration and purification of mineral water or drinking water under an environment where the working water pressure is 0.1 to 0.7MPa, and has advantages of compact structure and high purified water output speed.
Preferably, the primary filter element 21 is a PP cotton filter element, a microporous ceramic sintered filter element, a microporous diatomite sintered filter element or a microporous molecular sieve sintered filter element;
the outer side surface of the primary filter element 21 is a filter starting end, and the inner side surface of the primary filter element 21 is a filter end;
the inner side of the primary filter element 21 surrounds the outer side of the front activated carbon filter element 22.
As shown in fig. 1 to 3, the PP cotton filter element, the microporous ceramic sintered filter element, the microporous diatomite sintered filter element or the microporous molecular sieve sintered filter element can effectively filter sand, scale, impurities, etc. contained in mineral water or drinking water, reduce the blockage and workload of other filter elements, and improve the overall purification efficiency of the filter device containing the ultrafiltration membrane combined filter element.
Preferably, the aperture of the ultrafiltration micropores of the folded ultrafiltration membrane is 0.01-0.2 microns.
Under the working pressure of 0.1-0.7MPa, the folded ultrafiltration membrane with the pore diameter of 0.01-0.2 micron can separate solutes with the size of 0.01-0.2 micron in water quality and retain trace elements and minerals in the water which are beneficial to human bodies.
Specifically, the middle part of the water diversion cover 26 extends downwards to form the purified water output pipe 261;
the upper end of the purified water output pipe 261 extends upwards and protrudes outwards from the top surface of the water diversion cover 26, the lower end surface of the rear activated carbon filter element 24 is abutted against the top surface of the water diversion cover 26, and the inner side surface of the rear activated carbon filter element 24 is abutted against the outer side surface of the upper end part of the purified water output pipe 261;
the purified water output port 2611 is located the lower tip of purified water output tube 261, the end of filtering out of rearmounted active carbon filter element 24 is through purified water output port 2611 communicates with the external world.
As shown in fig. 3 and 6, the lower end surface of the rear activated carbon filter element 24 abuts against the top surface of the water diversion cover 26, and the inner side surface of the rear activated carbon filter element 24 abuts against the outer side surface of the upper end portion of the purified water output pipe 261, so that the installation stability of the rear activated carbon filter element 24 can be improved.
Further, the lower end surfaces of the primary filter element 21 and the front activated carbon filter element 22 are adjacently abutted against the top surface of the water diversion cover 26;
the edge of the water diversion cover 26 extends upwards to surround the lower end part of the primary filter element 21, and the inner side surface of the edge of the water diversion cover 26 is abutted against the outer side surface of the lower end part of the primary filter element 21.
As shown in fig. 1, the lower end surfaces of the primary filter element 21 and the front activated carbon filter element 22 are both abutted against the top surface of the water distribution cover 26, and the inner side surface of the edge of the water distribution cover 26 is abutted against the outer side surface of the lower end portion of the primary filter element 21, so that the lower ends of the primary filter element 21 and the front activated carbon filter element 22 have better installation stability.
Further, an inner upper cover 25 is also included;
the inner upper cover 25 is detachably sleeved on the tops of the primary filter element 21, the front active carbon filter element 22, the ultrafiltration membrane filter element 23 and the rear active carbon filter element 24;
the bottom surface of the inner upper cover 25 covers and abuts against the top surfaces of the primary filter element 21, the front activated carbon filter element 22, the ultrafiltration membrane filter element 23 and the rear activated carbon filter element 24, the edge of the inner upper cover 25 extends downwards and surrounds the upper end part of the primary filter element 21, and the inner side surface of the edge of the inner upper cover 25 abuts against the outer side surface of the upper end part of the primary filter element 21;
the top surface of the inner upper cover 25 is pressed against the inner top surface of the shell 1.
As shown in fig. 3 and 5, the upper ends of the primary filter element 21, the pre-activated carbon filter element 22 and the ultrafiltration membrane filter element 23 have good installation stability, so that the operation stability of the filter device comprising the ultrafiltration membrane combined filter element can be ensured, the top surface of the inner upper cover 25 is abutted against the inner top surface of the housing 1, and the inner upper cover 25 can be detached, so that the maintenance, cleaning and replacement of the primary filter element 21, the pre-activated carbon filter element 22 and the ultrafiltration membrane filter element 23 are facilitated.
Specifically, the inner upper cover 25 is provided with an upper positioning ring 251 and an upper positioning boss 252;
the upper positioning boss 252 is located in the middle of the bottom surface of the inner upper cover 25, the upper positioning boss 252 extends downwards into a gap enclosed by the inner side surface of the rear active carbon filter element 24, and the outer side surface of the upper positioning boss 252 abuts against the inner side surface of the upper end of the rear active carbon filter element 24;
the upper positioning ring 251 is located between the outer side surface of the upper positioning boss 252 and the inner side surface of the edge of the inner upper cover 25, the upper end of the upper positioning ring 251 is connected with the bottom surface of the inner upper cover 25, the lower end of the upper positioning ring 251 downwardly extends into a gap between the front active carbon filter element 22 and the ultrafiltration membrane filter element 23, the outer side surface of the upper positioning ring 251 abuts against the inner side surface of the front active carbon filter element 22, and the inner side surface of the upper positioning ring 251 abuts against the inner side surface of the ultrafiltration membrane filter element 23.
As shown in fig. 1 and 5, the upper end of the rear activated carbon filter element 24 can be fixed by the upper positioning boss 252, and the upper ends of the front activated carbon filter element 22 and the ultrafiltration membrane filter element 23 can be isolated and fixed by the upper positioning ring 251, so that the upper ends of the rear activated carbon filter element 24, the front activated carbon filter element 22 and the ultrafiltration membrane filter element 23 are prevented from being displaced under the influence of water pressure, and the operation stability of the filter device containing the ultrafiltration membrane combined filter element is further improved.
Further, the water diversion cover 26 is also provided with a lower positioning ring 262;
the lower positioning ring 262 is positioned between the outer side surface of the purified water output pipe 261 and the inner side surface of the edge of the water diversion cover 26, and the lower end of the lower positioning ring 262 is connected with the top surface of the water diversion cover 26;
the upper end of the lower positioning ring 262 upwards extends into a gap between the front activated carbon filter element 22 and the ultrafiltration membrane filter element 23, the outer side surface of the lower positioning ring 262 is abutted against the inner side surface of the front activated carbon filter element 22, and the inner side surface of the lower positioning ring 262 is abutted against the inner side surface of the ultrafiltration membrane filter element 23.
As shown in fig. 1 and 6, the lower ends of the pre-positioned activated carbon filter element 22 and the ultrafiltration membrane filter element 23 can be isolated and fixed by the lower positioning ring 262, so that the lower ends of the pre-positioned activated carbon filter element 22 and the ultrafiltration membrane filter element 23 are prevented from being displaced under the influence of water pressure, and the operation stability of the filtering device containing the ultrafiltration membrane combined filter element is further improved.
Further, the shell 1 is provided with a water inlet and outlet pipe 11;
the water inlet and outlet pipe 11 is positioned at the lower end of the shell 1, and the inner side surface of the water inlet and outlet pipe 11 surrounds the outer side surface of the purified water output pipe 261;
a gap is arranged between the inner side surface of the water inlet and outlet pipe 11 and the outer side surface of the purified water output pipe 261, and the gap between the inner side surface of the water inlet and outlet pipe 11 and the outer side surface of the purified water output pipe 261 is communicated with the initial filtering end of the primary filter element 21.
As shown in fig. 1 and 6, the input water to be purified and the output purified water are isolated by the purified water output pipe 261, the purified water can be prevented from being polluted, the water inlet and outlet pipe 11 is sleeved outside the purified water output pipe 261, the filtering device with the ultrafiltration membrane combined filter element has a simpler water inlet and outlet pipeline structure, and the appearance is more neat and beautiful.
Preferably, the device also comprises an output check valve 4 and an input check valve 3;
the output check valve 4 is installed at the purified water output port 2611, and the output check valve 4 is a check valve which is communicated in an inner one-way manner; the input check valve 3 is installed between the inner side surface of the water inlet/outlet pipe 11 and the outer side surface of the purified water output pipe 261.
As shown in fig. 1 and 6, the input of the water to be purified of the filtering device with the combined ultrafiltration membrane filter element or the output of the purified water can be controlled by the output check valve 4 and the input check valve 3 respectively, when the filtering device with the combined ultrafiltration membrane filter element is dismounted for maintenance, the water inlet and outlet pipe 11 and the purified water output pipe 261 cannot leak, and the cleaning work of maintenance personnel can be avoided.
In summary, as shown in fig. 1 to 6, in the embodiment of the present invention, the filtration apparatus including the ultrafiltration membrane combined filter element can rapidly output purified water through quadruple filtration, the ultrafiltration membrane in the ultrafiltration membrane filter element 23 can remove impurities in the water to be purified, can thoroughly filter harmful substances such as bacteria, rust and colloid in the water to be purified, and retain trace elements and minerals beneficial to human body in the water to be purified, and is suitable for further filtration and purification of mineral water or drinking water under an environment with a working water pressure of 0.1 to 0.7MPa, and has the advantages of compact structure and high output speed of purified water.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims (10)

1. A filter device containing an ultrafiltration membrane combined filter element is characterized by comprising a shell and the combined filter element;
the combined filter element comprises a primary filter element, a front active carbon filter element, an ultrafiltration membrane filter element and a rear active carbon filter element which are sequentially sleeved and arranged in the shell from outside to inside; the ultrafiltration membrane of the ultrafiltration membrane filter core is a folded ultrafiltration membrane and the working water pressure is 0.1-0.7 MPa;
the initial filtering end of the front activated carbon filter element is communicated with the filtering end of the primary filter element, the filtering end of the front activated carbon filter element is communicated with the initial filtering end of the ultrafiltration membrane filter element, and the filtering end of the ultrafiltration membrane filter element is communicated with the initial filtering end of the rear activated carbon filter element;
the water distributor also comprises a water distribution cover, and the middle part of the water distribution cover is provided with a purified water output pipe;
the filtering end of the rear active carbon filter element is communicated with the upper end of the purified water output pipe, and the lower end of the purified water output pipe is communicated with the outside.
2. The filter device containing the ultrafiltration membrane combined filter element according to claim 1, wherein the primary filter element is a PP cotton filter element, a microporous ceramic sintered filter element, a microporous diatomite sintered filter element or a microporous molecular sieve sintered filter element;
the outer side surface of the primary filter element is a filter starting end, and the inner side surface of the primary filter element is a filter end;
the inner side surface of the primary filter element surrounds the outer side surface of the front active carbon filter element.
3. The filtration device containing the ultrafiltration membrane combined filter element according to claim 1, wherein the aperture of the ultrafiltration micropores of the folded ultrafiltration membrane is 0.01-0.2 microns.
4. The filtering device with the ultrafiltration membrane combined filter element according to claim 1, wherein the middle part of the water diversion cover extends downwards to form the purified water output pipe;
the upper end of the purified water output pipe extends upwards and protrudes outwards from the top surface of the water diversion cover, the lower end surface of the rear activated carbon filter element is abutted against the top surface of the water diversion cover, and the inner side surface of the rear activated carbon filter element is abutted against the outer side surface of the upper end part of the purified water output pipe;
the purified water output port is positioned at the lower end part of the purified water output pipe, and the filtering end of the rear activated carbon filter element is communicated with the outside through the purified water output port.
5. The filter device containing the ultrafiltration membrane combined filter element according to claim 4, wherein the lower end surfaces of the primary filter element and the preposed activated carbon filter element are adjacently abutted against the top surface of the water diversion cover;
the edge of the water diversion cover extends upwards to surround the lower end part of the primary filter element, and the inner side surface of the edge of the water diversion cover is abutted to the outer side surface of the lower end part of the primary filter element.
6. The filter device containing the ultrafiltration membrane combined filter element according to claim 1, which is characterized by further comprising an inner upper cover;
the inner upper cover is detachably sleeved on the tops of the primary filter element, the front activated carbon filter element, the ultrafiltration membrane filter element and the rear activated carbon filter element;
the bottom surface of the inner upper cover covers and abuts against the top surfaces of the primary filter element, the front activated carbon filter element, the ultrafiltration membrane filter element and the rear activated carbon filter element, the edge of the inner upper cover extends downwards and surrounds the upper end part of the primary filter element, and the inner side surface of the edge of the inner upper cover abuts against the outer side surface of the upper end part of the primary filter element;
the top surface of the inner upper cover is abutted against the inner top surface of the shell.
7. The filter device containing the ultrafiltration membrane combined filter element according to claim 6, wherein the inner upper cover is provided with an upper positioning ring and an upper positioning boss;
the upper positioning boss is positioned in the middle of the bottom surface of the inner upper cover, the upper positioning boss extends downwards into a gap enclosed by the inner side surface of the rear active carbon filter element, and the outer side surface of the upper positioning boss is abutted against the inner side surface of the upper end of the rear active carbon filter element;
go up the holding ring and be located go up location boss lateral surface with between the medial surface of the edge of interior upper cover, the upper end of going up the holding ring with the bottom surface of interior upper cover is connected, the lower extreme of going up the holding ring stretches into downwards leading active carbon filter core with clearance between the milipore filter core, the lateral surface of going up the holding ring with the medial surface of leading active carbon filter core offsets, the medial surface of going up the holding ring with the medial surface of milipore filter core offsets.
8. The filter device containing the ultrafiltration membrane combined filter element according to claim 7, wherein the water diversion cover is also provided with a lower positioning ring;
the lower positioning ring is positioned between the outer side surface of the purified water output pipe and the inner side surface of the edge of the water diversion cover, and the lower end of the lower positioning ring is connected with the top surface of the water diversion cover;
the upper end of lower holding ring upwards stretches into leading active carbon filter core with clearance between the milipore filter core, the lateral surface of holding ring down with the medial surface of leading active carbon filter core offsets, the medial surface of holding ring down with the medial surface of milipore filter core offsets.
9. The filter device containing the ultrafiltration membrane combined filter element according to claim 1, wherein the shell is provided with a water inlet pipe and a water outlet pipe;
the water inlet and outlet pipe is positioned at the lower end of the shell, and the inner side surface of the water inlet and outlet pipe surrounds the outer side surface of the purified water output pipe;
a gap is arranged between the inner side surface of the water inlet and outlet pipe and the outer side surface of the purified water output pipe, and the gap between the inner side surface of the water inlet and outlet pipe and the outer side surface of the purified water output pipe is communicated with the primary filtering end of the primary filter element.
10. The filter device containing the ultrafiltration membrane combined filter element according to claim 9, which is characterized by further comprising an output check valve and an input check valve;
the output check valve is arranged at the purified water output port and is a check valve which is internally communicated in a one-way manner; the input check valve is installed between the inner side surface of the water inlet and outlet pipe and the outer side surface of the purified water output pipe.
CN202122661300.2U 2021-11-02 2021-11-02 Filtering device containing ultrafiltration membrane combined filter element Active CN215924578U (en)

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Application Number Priority Date Filing Date Title
CN202122661300.2U CN215924578U (en) 2021-11-02 2021-11-02 Filtering device containing ultrafiltration membrane combined filter element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122661300.2U CN215924578U (en) 2021-11-02 2021-11-02 Filtering device containing ultrafiltration membrane combined filter element

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Publication Number Publication Date
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