CN215712121U

CN215712121U - Reverse osmosis composite filter element and water purifier

Info

Publication number: CN215712121U
Application number: CN202120553269.8U
Authority: CN
Inventors: 龚圆杰; 张涛; 何海; 周栋; 范婷
Original assignee: Guangdong Chunmi Electrical Technology Co Ltd
Current assignee: Guangdong Chunmi Electrical Technology Co Ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2022-02-01
Anticipated expiration: 2031-03-17

Abstract

The present disclosure relates to a reverse osmosis composite filter element and a water purifier, the reverse osmosis composite filter element includes: a water inlet, a pure water outlet and a wastewater outlet are arranged on the filter flask; a filter material cover plate; the leading filter element subassembly includes: leading PP filter media, be located leading carbon-point filter media of leading PP filter media top, be located leading PP filter media with an isolation section of thick bamboo between the leading carbon-point filter media, leading PP filter media with leading carbon-point filter media is annular cylinder, and reverse osmosis filter core is located leading filter element group spare's inside cavity is regional, reverse osmosis filter core is annular cylinder, and rearmounted filter element group spare is fixed in the filter flask, be located reverse osmosis filter core's below includes rearmounted end cover and rearmounted filter media. The technical scheme can improve the reliability of the filter element and reduce the diameter of the whole filter element, the filter material structure has high standardization degree, low abnormal rate, low cost and high production efficiency, and the quality of the outlet water is guaranteed.

Description

Reverse osmosis composite filter element and water purifier

Technical Field

The disclosure relates to the technical field of water purification, in particular to a reverse osmosis composite filter element and a water purifier.

Background

Along with the demand of water purifier and clean drink machine miniaturization, the quantity and the form of filter core in water purifier and the clean drink machine are in continuous evolution, from initial 5 filter cores to 3 filter cores of complete machine, to 1 filter core of complete machine again, along with the improvement of integrating of filter core, the diameter and the inside of single filter core arrange and add complicacy more and more, this production efficiency and the yield that will influence the filter core certainly.

The prior composite filter element mainly has the following problems: 1) the diameter of the filter element is very thick, and is even larger than the diameter of 110mm, the larger the diameter is, the better the pressure resistance is, the wall thickness of the filter cylinder is increased, and the cost is increased; 2) sometimes, in order to control the diameter of the filter element, the preposed filter element uses a preposed composite filter element, so that the thickness of the filter material cannot be guaranteed, and the preposed filtering effect is greatly reduced; 3) for integration, the specifications of 3-5 filter materials in the filter element are 1 or 2 unconventional shapes, so that the standardization rate is low, the manufacturing complexity is high, and the qualification rate is also influenced; 4) the water paths in the filter element are complex, different water paths in the filter element need to be isolated, a plurality of sealing rings and isolating cylinders are used for isolation, and the more the sealing rings are, the higher the water channeling risk is; the more the spacer cylinder, the thicker the diameter of the filter element.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the related art, the embodiment of the disclosure provides a reverse osmosis composite filter element and a water purifier. The technical scheme is as follows:

according to an aspect of the embodiments of the present disclosure, there is provided a reverse osmosis composite filter element, including:

the filter flask is provided with a water inlet, a pure water outlet and a wastewater outlet;

the filter material cover plate is positioned at the top end of the filter bottle and comprises a first annular groove and a second annular groove, and the first annular groove surrounds the second annular groove;

the pre-positioned filter element assembly is fixed in the filter bottle and comprises a pre-positioned PP filter material, a pre-positioned carbon rod filter material positioned above the pre-positioned PP filter material and an isolation cylinder positioned between the pre-positioned PP filter material and the pre-positioned carbon rod filter material, the pre-positioned PP filter material and the pre-positioned carbon rod filter material are annular cylinders, the first annular groove and the isolation cylinder are clamped and fixed with the pre-positioned carbon rod filter material, and the isolation cylinder and the inner wall of the bottom of the filter bottle are clamped and fixed with the pre-positioned PP filter material; the outer wall of the isolation cylinder is matched with the inner wall of the filter flask to guide raw water entering from the water inlet to flow to the inner ring water inlet side of the front PP filter material, and water filtered by the front PP filter material is guided to flow from the outer ring water outlet side of the front PP filter material to the outer ring water inlet side of the front carbon rod filter material;

the reverse osmosis filter element is fixed in the filter bottle and is positioned in the hollow area inside the front filter element assembly, the reverse osmosis filter element is an annular cylinder, the upper end of the reverse osmosis filter element is positioned in the second annular groove, purified water filtered by the front carbon rod filter material flows out from the water outlet side of the inner ring of the front carbon rod filter material, flows to the water inlet side of the upper end of the reverse osmosis filter element under the blockage of the upper end of the isolation cylinder, pure water generated by the reverse osmosis filter element flows out from the central tube of the inner ring of the reverse osmosis filter element, and wastewater generated by the reverse osmosis filter element flows out from the wastewater side of the lower end of the reverse osmosis filter element;

the rear filter element assembly is fixed in the filter bottle, is positioned below the reverse osmosis filter element in the hollow area in the front filter element assembly, and comprises a rear end cover and a rear filter material, the rear filter material is positioned in the rear end cover, the upper end opening of the rear end cover is communicated with the inner ring central tube of the reverse osmosis filter element, and the lower end opening of the rear end cover is communicated with the pure water outlet in a sealing way;

wherein, the upper end outer wall of rearmounted end cover with keep apart a cooperation formation third annular groove, the lower extreme of reverse osmosis filter core is located in the third annular groove, the third annular groove with second annular groove clamp is fixed the reverse osmosis filter core, the waste water that the waste water side of reverse osmosis filter core flows passes through keep apart a section of thick bamboo with passageway intercommunication between the rearmounted end cover waste water outlet on the filter flask.

In one embodiment, the isolation cylinder is integrally formed and comprises an annular sleeve, an L-shaped sleeve and a groove-shaped annular cylinder, the lower end of the annular sleeve is connected with the L-shaped sleeve, the upper end of the annular sleeve is connected with the groove-shaped annular cylinder, the lower part of the preposed carbon rod filter material is located in a first annular groove, and the groove-shaped annular cylinder and the first annular groove clamp and fix the preposed carbon rod filter material.

In one embodiment, a first annular barrier and a second annular barrier are arranged at the inner wall of the bottom of the filter bottle, and the first annular barrier surrounds the second annular barrier; the first annular barrier piece is connected with the lower end of the isolation cylinder in a sealing mode, and the second annular barrier piece is connected with the lower end of the rear end cover in a sealing mode.

In one embodiment, further comprising:

the first sealing ring group is positioned at the joint of the first annular barrier piece and the lower end of the isolating cylinder, so that the first annular barrier piece is connected with the lower end of the isolating cylinder in a sealing way;

and the second sealing ring group is positioned at the joint of the second annular barrier piece and the lower end of the rear end cover, so that the second annular barrier piece is connected with the lower end of the rear end cover in a sealing way.

In one embodiment, further comprising:

the third sealing ring group is positioned at the joint of the upper end opening of the rear end cover and the inner ring central tube of the reverse osmosis filter element;

and the fourth sealing ring group is positioned between the outer side of the rear filter material and the inner wall of the rear end cover and is used for preventing the pure water in the central tube of the inner ring from flowing out of the lower end opening of the rear end cover without passing through the rear filter material.

In one embodiment, the first annular groove and the second annular groove share a groove wall.

In one embodiment, the water inlet, the pure water outlet and the waste water outlet are located at the bottom of the filter flask.

In one embodiment, the water inlet, the pure water outlet and the wastewater outlet are provided with one-way water stopping devices, and the one-way water stopping devices are used for stopping water from flowing at the water inlet, the pure water outlet and the wastewater outlet when the reverse osmosis composite filter element is disassembled.

In one embodiment, the post filter comprises at least one filter selected from activated carbon, PP wool, origami PP, ultrafiltration membrane, microfiltration membrane, and mineralizer.

According to an aspect of the embodiments of the present disclosure, there is provided a water purifier including any one of the reverse osmosis composite filter elements described above.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

1) the front PP filter material, the front carbon rod filter material and the reverse osmosis filter element used in the embodiment are all conventional annular cylinder structures, and the rear filter material is a standard cylindrical structure and is all conventional structures, so that the standardization degree is high, the abnormal rate is low, and the cost is low;

2) use leading PP filter media in this disclosure by this keep apart a section of thick bamboo with filter flask bottom inner wall clamp closes fixedly, this leading carbon-point filter media closes fixedly by first annular groove on this filter media apron and this isolation collet chuck, this reverse osmosis filter core is closed fixedly by second annular groove on this filter media apron and this rearmounted end cover clamp, this rearmounted filter media is closed fixedly by this rearmounted end cover clamp, so only need set up one in the compound filter core of reverse osmosis that this disclosure provided and keep apart a section of thick bamboo, a filter media apron and a rearmounted end cover cooperate fixed each filter media and keep apart the water course, the isolation section of thick bamboo and the apron of use are few, be favorable to improving the reliability and reduce the diameter of whole filter core.

3) The front filter element consists of conventional PP cotton and a carbon rod filter element which are distributed up and down, so that the filter element has enough wall thickness and ensures the filtering precision; and the carbon rod has moderate height, which is beneficial to improving the strength.

4) The water route circulation among this reverse osmosis composite filter core is smooth and easy, gets into leading filter element group spare from the filter flask bottom and carries out leading filtration back, gets into reverse osmosis filter core from the upper portion again and from the top down flows to this rearmounted filter core from this and filters the back and flow out from the filter flask bottom, is favorable to the discharge of filter flask inside air, avoids the gas to block up.

5) The reverse osmosis composite filter element is simple and compact in structure, the diameter of the filter element is small, the small diameter is better in pressure resistance, the wall thickness of the filter bottle can be properly reduced, the cost is reduced, the reverse osmosis composite filter element is high in production efficiency, and the quality of outlet water is guaranteed.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is an exploded view of a reverse osmosis composite filter element according to an exemplary embodiment.

Fig. 2 is a schematic cross-sectional structure diagram of a reverse osmosis composite filter element according to an exemplary embodiment.

Fig. 3 is a schematic structural diagram of a water purifier according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "upper", "lower", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present disclosure provides a reverse osmosis composite filter element, fig. 1 is an exploded view illustrating a reverse osmosis composite filter element according to an exemplary embodiment, and fig. 2 is a schematic sectional view illustrating a reverse osmosis composite filter element according to an exemplary embodiment.

As shown in fig. 1 and 2, the reverse osmosis composite filter element includes a filter flask 11 (the filter flask includes a filter flask body 111 and a filter flask cover 112), and a filter material cover plate 12, a pre-PP filter material 13, a pre-carbon rod filter material 14, an isolation cylinder 15, a reverse osmosis filter element 16 and a post-filter element assembly 17 which are located in the filter flask 11.

As shown in fig. 2, the filter flask 11 is provided with a water inlet 113, a pure water outlet 114 and a waste water outlet 115; here, the water inlet 113 is an inlet of raw water to be purified by the reverse osmosis composite filter element, and the pure water outlet 114 is an outlet of pure water generated by purification through the pre-PP filter material 13, the pre-carbon rod filter material 14, the reverse osmosis filter element 16, and the post-filter element in the reverse osmosis composite filter element, and the wastewater is an outlet of wastewater generated by the reverse osmosis filter element 16 in the reverse osmosis composite filter element.

As shown in fig. 2, a filter material cover plate 12 is arranged in the filter bottle 11, the filter material cover plate 12 is located at the top end of the filter bottle 11 and includes a first annular groove 121 and a second annular groove 122, and the first annular groove 121 surrounds the second annular groove 122; the first and second

annular grooves

121 and 122 are used to secure the respective filter media within the filter flask 11.

As shown in fig. 2, a pre-filter element assembly for purifying raw water is arranged in the filter bottle 11, and the pre-filter element assembly is fixed in the filter bottle 11 and includes a pre-PP filter material 13, a pre-carbon rod filter material 14 located above the pre-PP filter material 13, and an isolation cylinder 15 located between the pre-PP filter material 13 and the pre-carbon rod filter material 14, the pre-PP filter material 13 and the pre-carbon rod filter material 14 are annular cylinders, the first annular groove 121 and the isolation cylinder 15 are clamped and fixed with the pre-carbon rod filter material 14, and the isolation cylinder 15 and the inner wall of the bottom of the filter bottle 11 are clamped and fixed with the pre-PP filter material 13; the outer wall of the isolation cylinder 15 is matched with the inner wall of the filter flask 11 to guide the raw water entering from the water inlet 113 to flow to the inner ring water inlet side of the front PP filter material 13, and the water filtered by the front PP filter material 13 is guided to flow from the outer ring water outlet side of the front PP filter material 13 to the outer ring water inlet side of the front carbon rod filter material 14.

As shown in fig. 2, a reverse osmosis filter element 16 is arranged in the filter bottle 11, the reverse osmosis filter element 16 is fixed in the filter bottle 11 and is positioned in the hollow area of the front filter element component, the integral pre-filter element assembly is an annular cylinder, the reverse osmosis filter element 16 is positioned in the hollow area of the inner part of the annular cylinder, the reverse osmosis filter element 16 is an annular cylinder, the upper end of the reverse osmosis filter element 16 is positioned in the second annular groove 122, the purified water filtered by the preposed carbon rod filter material 14 flows out from the water outlet side of the inner ring of the preposed carbon rod filter material 14, the water blocked at the upper end of the isolating cylinder 15 flows to the upper water inlet side of the reverse osmosis filter element, the pure water produced by the reverse osmosis filter element 16 flows out of the inner ring central tube of the reverse osmosis filter element 16, the wastewater generated from the reverse osmosis filter element 16 flows out from the lower wastewater side of the reverse osmosis filter element 16.

The rear filter element assembly 17 is fixed in the filter bottle 11, is positioned below the reverse osmosis filter element 16 in the hollow area in the front filter element assembly, and comprises a rear end cover 171 and a rear filter material 172, the rear filter material 172 is positioned in the rear end cover 171, the upper end opening of the rear end cover 171 is communicated with the inner ring central tube of the reverse osmosis filter element 16, and the lower end opening of the rear end cover 171 is communicated with the pure water outlet 114 in a sealing manner; it should be noted that the rear end cover 171 may include a rear upper cover plate and a rear lower cover plate, and the rear filter 172 may be placed in the rear upper cover plate first during assembly, and then the rear lower cover plate and the rear upper cover plate are assembled together in a snap-fit manner.

Wherein, the upper end outer wall of rearmounted end cover 171 with keep apart a section of thick bamboo 15 cooperation formation third annular groove, reverse osmosis filter core 16's lower extreme is located in the third annular groove, the third annular groove with second annular groove 122 clamping is fixed reverse osmosis filter core 16, the waste water that the waste water side of reverse osmosis filter core 16 flows out passes through keep apart a section of thick bamboo 15 with passageway intercommunication between the rearmounted end cover 171 waste water outlet 115 on the filter flask 11.

Here, the reverse osmosis composite filter element provided by the present disclosure is mainly suitable for a table top water purifier, raw water entering the reverse osmosis composite filter element is pressurized, and the pressure reaches the working pressure required by the operation of the reverse osmosis filter element 16, for example, the pressure is 0.4 to 0.8 Mpa. As shown by the arrow in fig. 2, the pressurized raw water enters from the water inlet 113, enters the inner ring water inlet side of the pre-PP filter material 13 through the channel between the outer wall of the isolation cylinder 15 and the inner wall of the filter flask 11, passes through the pre-PP filter material 13 from inside to outside, and the pre-PP filter material 13 is loose inside and tight outside (for example, the internal filtration precision may be 10 μm, and the external filtration precision may be 5 μm), so that larger particles of impurities can be filtered out first, and then smaller particles of impurities can be filtered out; the front PP filter material 13 can remove large particles such as rust, sediment, worm eggs and the like in water; then flows upwards to the outer ring water inlet side of the preposed carbon rod filter material 14 through a gap between the outer wall of the isolation cylinder 15 and the inner wall of the filter bottle 11 under the action of water pressure, and passes through the preposed carbon rod filter material 14 from outside to inside, and the preposed carbon rod filter material 14 can effectively remove organic matters, peculiar smell and residual chlorine in water; then flows to the outer ring side of the reverse osmosis filter element through the opening between the upper end of the isolation cylinder 15 and the filter material cover plate 12, and flows to the upper water inlet side of the reverse osmosis filter element under the blocking of the upper end of the isolation cylinder 15, wherein it should be noted that the upper end of the isolation cylinder 15 is hermetically connected with the reverse osmosis filter element, so that the purified water from the preposed carbon rod filter material 14 is blocked to flow to the lower end of the reverse osmosis filter element, and only flows to the upper water inlet side of the reverse osmosis filter element, after the purified water enters from the upper end of the reverse osmosis filter element, under a certain pressure, water molecules can pass through the RO membrane, and impurities in the purified water, such as inorganic salts, heavy metal ions, organic matters, colloids, bacteria, viruses and the like, can not pass through the RO membrane, so that the pure water which can pass through the RO membrane and the waste water which cannot pass through the RO membrane are strictly distinguished, the inner ring side of the reverse osmosis filter element is the pure water side, and the lower side of the reverse osmosis filter element is the waste water side, the concentrated water cannot permeate the RO membrane, and only flows out from the wastewater side of the reverse osmosis filter element 16, and flows to the wastewater outlet 115 through the passage between the isolation cylinder 15 and the rear end cover 171 to be discharged; pure water can flow out from the inner ring central pipe of the reverse osmosis filter element 16 through the RO membrane, the pure water produced in the inner ring central pipe can vertically flow into the post filter 172 through the upper end opening of the post end cap 171, and the post filter 172 can adjust the pure water into weak alkaline water to improve the taste.

Here, the pre-PP filter material 13, the pre-carbon rod filter material 14, and the reverse osmosis filter element 16 used in the present disclosure are all of a conventional annular column structure, and the post-filter material 172 is of a standard column structure, all of which are of a conventional structure, and thus, the present disclosure has a high degree of standardization, a low anomaly rate, and a low cost.

Here, the material of the leading PP filter material 13 used in the present disclosure can be simply and conveniently clamped and fixed by the isolating cylinder 15 and the inner wall of the bottom of the filter flask 11, the leading carbon rod filter material 14 is clamped and fixed by the first annular groove 121 on the filter material cover plate 12 and the isolating cylinder 15, the reverse osmosis filter element 16 is clamped and fixed by the second annular groove 122 on the filter material cover plate 12 and the rear end cap 171, and the rear filter material 172 is clamped and fixed by the rear end cap 171, so that only one isolating cylinder 15 needs to be arranged in the reverse osmosis composite filter element provided by the present disclosure, one filter material cover plate 12 and one rear end cap 171 are matched and fixed with each filter material and isolating water channel, the used isolating cylinder 15 and cover plate are few, which is beneficial to improving the reliability and reducing the diameter of the whole filter element.

The front filter element consists of a conventional PP cotton and carbon rod filter element which are distributed up and down, so that the filter element has enough wall thickness and ensures the filtering precision; and the carbon rod has moderate height, which is beneficial to improving the strength.

Here, the water route circulation among this reverse osmosis composite filter core is smooth and easy, gets into leading filter element group spare from filter flask 11 bottom and carries out leading filtration back, gets into reverse osmosis filter core 16 again from upper portion from the top down and flow to this rearmounted filter core from the filter flask 11 bottom after filtering and flow out, is favorable to the discharge of the inside air of filter flask 11, avoids the gas to block up.

Here, the reverse osmosis composite filter element that this disclosure provided simple structure, compactness, the diameter of filter element is less, and little diameter is withstand voltage just better, and the wall thickness of filter flask 11 can suitably be reduced, reduce cost, and the reverse osmosis composite filter element that this disclosure provided production efficiency is high, and it is guaranteed to go out water quality.

In a possible embodiment, as shown in fig. 2, the isolation cylinder 15 is integrally formed, and includes an annular sleeve 151, an L-shaped sleeve 152, and a groove-shaped annular cylinder 153, the lower end of the annular sleeve 151 is connected to the L-shaped sleeve 152, the upper end of the annular sleeve 151 is connected to the groove-shaped annular cylinder 153, the lower portion of the front carbon rod filter 14 is located in the groove-shaped annular cylinder 153, the upper portion of the front carbon rod filter 14 is located in the first annular groove 121, and the groove-shaped annular cylinder 153 and the first annular groove 121 clamp and fix the front carbon rod filter 14.

Here, as shown in fig. 2, the separation cylinder 15 and the inner wall of the bottom of the filter flask 11 are clamped and fixed with the pre-PP filter material 13: the outer wall of the bottom of the groove-shaped annular cylinder 153 and the inner wall of the bottom of the filter flask 11 are clamped and fixed with the front PP filter material 13.

In a possible embodiment, a first annular stop 116 and a second annular stop 117 are provided at the bottom inner wall of the filter flask 11, the first annular stop 116 surrounding the second annular stop 117; the first annular blocking piece 116 is connected with the lower end of the isolation cylinder 15 in a sealing way, so that a wastewater waterway and a raw water waterway are prevented from water channeling; the second annular barrier 117 is hermetically connected to the lower end of the rear end cap 171 to prevent the pure water path and the waste water path from leaking.

In one possible embodiment, as shown in fig. 2, the reverse osmosis composite filter element further comprises: a first seal ring set 21 and a second seal ring set 22.

The first sealing ring group 21 is positioned at the joint of the first annular blocking piece 116 and the lower end of the isolation cylinder 15, so that the first annular blocking piece 116 is connected with the lower end of the isolation cylinder 15 in a sealing way, and a wastewater waterway and a raw water waterway are prevented from water channeling; the second sealing ring set 22 is located at the joint of the second annular barrier 117 and the lower end of the rear end cap 171, so that the second annular barrier 117 is connected with the lower end of the rear end cap 171 in a sealing manner, and a pure water channel and a waste water channel are prevented from leaking water.

Here, the first seal ring group 21 may be two seal rings, and the second seal ring group 22 may be two seal rings, so that sealing can be performed better.

The water channel sealing device disclosed by the utility model needs two sealing ring groups to seal and separate each water channel, the used sealing rings are few, and the risk of water channeling is low.

In a possible embodiment, preferably, as shown in fig. 2, the reverse osmosis composite filter element further comprises: a third set of seals 23 and a fourth set of seals 24.

The third sealing ring group 23 is located at the joint between the upper end opening of the rear end cap 171 and the inner ring center tube of the reverse osmosis filter element 16, and is used for preventing pure water in the inner ring center tube from flowing to the wastewater side through a gap between the reverse osmosis filter element 16 and the rear end cap 171, and preventing a pure water channel and a wastewater channel from flowing; and a fourth seal ring group 24 located between the outside of the post filter 172 and the inner wall of the post end cap 171, for preventing pure water in the inner ring center tube from flowing out of the lower end opening of the post end cap 171 without passing through the post filter 172.

In one possible embodiment, as shown in fig. 2, the first annular groove 121 and the second annular groove 122 share a groove wall.

In a possible embodiment, the water inlet 113, the pure water outlet 114 and the waste water outlet 115 are all located at the bottom of the filter flask 11, so as to facilitate the installation or the removal of the composite filter element in the water purifier.

In a possible embodiment, the water inlet 113, the pure water outlet 114 and the waste water outlet 115 are each provided with one-way water stop means for stopping the flow of water at the water inlet 113, the pure water outlet 114 and the waste water outlet 115 when the reverse osmosis composite cartridge is replaced. Like this, when needing to clean, maintain or change this reverse osmosis composite filter element, dismantle from the purifier and take out this reverse osmosis composite filter element, one-way stagnant water device will prevent that the rivers in this reverse osmosis composite filter element from flowing, avoids appearing dripping or the phenomenon of leaking.

In one possible embodiment, the post-filter 172 includes at least one filter selected from activated carbon, PP wool, origami PP, ultrafiltration membrane, microfiltration membrane, and mineralizer. The post-filter material 172 is used for further filtering the flowing pure water, filtering out particle impurities in the water, and improving the taste of the pure water, inhibiting bacteria and resisting bacteria and retaining microorganisms.

The disclosure also provides a water purifier, which comprises the reverse osmosis composite filter element.

For example, fig. 3 is a schematic structural diagram of a water purifier shown according to an exemplary embodiment, and as shown in fig. 3, the water purifier includes a reverse osmosis composite filter element 1 and a booster pump 2, a tap water port of the water purifier is communicated with a water inlet of the booster pump, a water outlet of the booster pump is communicated with a water inlet 113 of the reverse osmosis composite filter element 1, a wastewater outlet 115 of the reverse osmosis composite filter element is communicated with a wastewater port of the water purifier, and a pure water outlet 114 of the reverse osmosis composite filter element is communicated with a pure water port of the water purifier.

Here, after the external tap water enters the water purifier from the tap water port, the external tap water may be pressurized by the booster pump and then flow into the reverse osmosis composite filter element, and after the filtration and purification of the pre-PP filter material 13, the pre-carbon rod filter material 14, the reverse osmosis filter element 16 and the post-filter material 172 in the reverse osmosis composite filter element 16, the generated pure water flows out from the pure water outlet 114 of the reverse osmosis composite filter element to the pure water port of the water purifier, and further flows to the faucet for use, and the generated wastewater flows out from the wastewater outlet 115 of the reverse osmosis composite filter element to the wastewater port of the water purifier and is discharged.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure should be limited only by the attached claims.

Claims

1. A reverse osmosis composite filter element, comprising:

2. A reverse osmosis composite filter element according to claim 1,

the isolating cylinder is integrally formed and comprises an annular sleeve, an L-shaped sleeve and a groove-shaped annular cylinder, the lower end of the annular sleeve is connected with the L-shaped sleeve, the upper end of the annular sleeve is connected with the groove-shaped annular cylinder, the lower part of the front carbon rod filter material is located in a first annular groove, and the groove-shaped annular cylinder and the first annular groove are clamped and fixed with the front carbon rod filter material.

3. A reverse osmosis composite filter element according to claim 1,

a first annular blocking piece and a second annular blocking piece are arranged on the inner wall of the bottom of the filter bottle, and the first annular blocking piece surrounds the second annular blocking piece; the first annular barrier piece is connected with the lower end of the isolation cylinder in a sealing mode, and the second annular barrier piece is connected with the lower end of the rear end cover in a sealing mode.

4. The reverse osmosis composite filter cartridge of claim 3, further comprising:

5. The reverse osmosis composite filter cartridge of claim 1, further comprising:

6. The reverse osmosis composite filter cartridge of claim 1, comprising:

the first annular groove and the second annular groove share a groove wall.

7. The reverse osmosis composite filter cartridge of claim 1, wherein the water inlet, pure water outlet and waste water outlet are located at the bottom of the filter flask.

8. A reverse osmosis composite filter element according to claim 1 wherein the water inlet, pure water outlet and waste water outlet are each provided with a one-way water stop means for stopping water flow at the water inlet, pure water outlet and waste water outlet when the reverse osmosis composite filter element is disassembled.

9. A water purification machine, characterized by comprising a reverse osmosis composite filter element according to any one of claims 1 to 8.