CN216512995U - Reverse osmosis membrane filter core and water purifier - Google Patents

Abstract

The utility model discloses a reverse osmosis membrane filter element and a water purifier, wherein the reverse osmosis membrane filter element comprises a shell and a filter assembly, the shell comprises a cylinder body and a cover body which are fixedly connected, and the cover body is provided with a raw water inlet, a waste water outlet and a pure water outlet; the filter assembly comprises a membrane element main body, an upper end cover and a lower end cover which are fixedly connected, the upper end cover and the cover body are hermetically connected and form a raw water flow path communicated with a raw water inlet, a waste water flow path communicated with a waste water outlet and a pure water flow path communicated with a pure water outlet, the lower end cover is fixedly connected with the cylinder body to form an installation cavity, and the membrane element main body is arranged in the installation cavity and is tightly connected with the wall of the installation cavity; wherein the raw water flows into the raw water flow path through the raw water inlet, and flows into the membrane element main body to be filtered to form pure water, part of the pure water flows into the pure water flow path and is discharged through the pure water discharge port, and the rest of the pure water flows into the wastewater flow path and is discharged through the wastewater discharge port. The technical scheme of the utility model can simplify the structure and reduce the raw water amount in the filter element.

Description

Reverse osmosis membrane filter core and water purifier

Technical Field

The utility model relates to the technical field of reverse osmosis membrane filter elements, in particular to a reverse osmosis membrane filter element and a water purifier.

Background

Generally, the proportion of water inflow and waste water in the filter element system is far greater than pure water, when the machine is shut down, because the raw water volume stored in the raw water flow path in the filter element is large, the raw water volume and the waste water in the filter element are mixed into a large amount of high-TDS value water, when the machine is restarted, the high-TDS value water can be firstly filtered, so that the TDS value of the first cup of water started again is higher, and the first cup of water is not recommended to be drunk.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a reverse osmosis membrane filter element, aiming at simplifying the structure and reducing the raw water quantity in the filter element.

In order to achieve the above object, the present invention provides a reverse osmosis membrane filter element, comprising:

the device comprises a shell, a water inlet, a waste water outlet and a pure water outlet, wherein the shell comprises a cylinder body and a cover body which are fixedly connected; and

the filter assembly comprises a membrane element main body, an upper end cover and a lower end cover which are fixedly connected, the upper end cover is hermetically connected with the cover body and forms a raw water flow path communicated with the raw water inlet, a waste water flow path communicated with the waste water outlet and a pure water flow path communicated with the pure water outlet, the lower end cover is fixedly connected with the cylinder body to form an installation cavity, and the membrane element main body is arranged in the installation cavity and is tightly connected with the wall of the installation cavity;

wherein the raw water flows into the raw water flow path through the raw water inlet, and flows into the membrane element main body to be filtered to form pure water, a part of the pure water flows into the pure water flow path and is discharged through the pure water discharge port, and the rest of the pure water flows into the wastewater flow path and is discharged through the wastewater discharge port.

Optionally, the cylinder is made of glass fiber reinforced plastic.

Optionally, the filter assembly further comprises a central tube, one end of the central tube is connected with the cover body in a sealing manner and is communicated with the pure water flow path, the other end of the central tube is connected with the lower end cover in a sealing manner, the membrane element main body is coiled around the central tube to form a cylindrical shape, and the end face, close to the upper end cover, of the membrane element main body is provided with a raw water inlet and a waste water outlet.

Optionally, the upper end cover is provided with a center hole, a first through hole and a second through hole, the center pipe penetrates through the center hole and is connected with the cover body in a sealing mode, the first through hole is communicated with the raw water inlet and the raw water flow path, and the second through hole is communicated with the waste water outlet and the waste water flow path.

Alternatively, the upper end cap may have a first sealing wall provided around the center hole, the cap may have a second sealing wall and a third sealing wall provided around the pure water discharge port, the first sealing wall and the second sealing wall may be connected to separate the raw water flow path and the waste water flow path, and the third sealing wall may be located inside the second sealing wall and may be connected to the center pipe to separate the waste water flow path and the pure water flow path.

Optionally, the pipe wall of the central pipe is provided with a communicating hole.

Optionally, the cover body comprises a first connecting wall, the first connecting wall is fixedly connected with the cylinder body, and a first glue accommodating hole is formed in the first connecting wall;

and/or the lower end cover comprises a second connecting wall, the second connecting wall is fixedly connected with the cylinder body, and a second glue containing hole is formed in the second connecting wall.

Optionally, the outer side wall of the first sealing wall is provided with at least a first ring groove, a first sealing ring is embedded in the first ring groove, and the first sealing ring is abutted against the second sealing wall;

and/or, at least a second annular groove is formed in the outer wall of the central pipe, a second sealing ring is embedded in the second annular groove, and the second sealing ring is abutted to the third sealing wall.

Optionally, the lower end cover further comprises a positioning convex part, at least a third ring groove is formed in the outer wall of the positioning convex part, a third sealing ring is embedded in the third ring groove, and the third sealing ring is abutted to the inner wall of the central pipe.

The utility model also provides a water purifier, which comprises the reverse osmosis membrane filter element.

According to the technical scheme, the upper end cover and the cover body are matched to form a raw water flow path communicated with the raw water inlet, a waste water flow path communicated with the waste water discharge port and a pure water flow path communicated with the pure water discharge port, and the membrane element main body is fixedly connected with the upper end cover and the cylinder body respectively, so that raw water directly enters the membrane element main body for filtration after flowing into the raw water flow path.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a cross-sectional view of one embodiment of a reverse osmosis membrane cartridge of the present invention;

FIG. 2 is an exploded view of a reverse osmosis membrane cartridge;

FIG. 3 is a schematic view of the upper end cap from a first perspective;

FIG. 4 is a schematic structural view of the upper end cap from a second perspective;

fig. 5 is a schematic structural view of the cover.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a reverse osmosis membrane filter element.

Referring to fig. 1 to 5, in the embodiment of the present invention, the reverse osmosis membrane cartridge includes a housing 10 and a filter assembly 20, the housing 10 includes a cylinder 101 and a cover 102 fixedly connected, and the cover 102 is provided with a raw water inlet 102a, a waste water outlet 102b, and a pure water outlet 102 c; the filter assembly 20 comprises a membrane element main body 201, an upper end cover 202 and a lower end cover 207 which are fixedly connected, wherein the upper end cover 202 is hermetically connected with the cover body 102 and forms a raw water flow path 3 communicated with a raw water inlet 102a, a waste water flow path 4 communicated with a waste water outlet 102b and a pure water flow path 5 communicated with a pure water outlet 102c, the lower end cover 207 is fixedly connected with the cylinder body 101 to form an installation cavity, and the membrane element main body 201 is arranged in the installation cavity and is tightly connected with the cavity wall of the installation cavity; the raw water flows into the raw water flow path 3 through the raw water inlet 102a, flows into the membrane element main body 201, is filtered to form pure water, a part of the pure water flows into the pure water flow path 5 and is discharged through the pure water discharge port 102c, and the rest of the pure water flows into the waste water flow path 4 and is discharged through the waste water discharge port 102 b. With this arrangement, the space for storing the raw water in the reverse osmosis filter element is reduced, that is, the raw water flow path 3 is shortened, so that only a small amount of mixed water formed by mixing the raw water and the waste water is left after the filtration is stopped for a period of time, and when the filtration is started again, the newly fed raw water pushes the mixed water to be preferentially filtered, for example, in a 1:1 system, the mixed water filters half of the high TDS value water into the pure water flow path 5, and half of the mixed water is discharged from the waste water discharge port 102b, so that the obtained TDS value of the first cup of water is greatly reduced, and a user can directly drink the first cup of water.

The upper end cover 202 and the cover body 102 are tightly assembled in a matched manner to form a raw water flow path 3 communicated with the raw water inlet 102a, a waste water flow path 4 communicated with the waste water outlet 102b and a pure water flow path 5 communicated with the pure water outlet 102c, so that the structure between the upper end cover 202 and the cover body 102 is compact, the path of raw water flowing to the membrane element main body 201 is shortened, the assembly structure is simplified, the assembly of a reverse osmosis membrane filter element is facilitated, the production efficiency is improved, and the formation of each flow path is facilitated.

Specifically, the upper end cap 202 and the membrane element main body 201 can be connected in a sealing manner through a sealing adhesive, similarly, the lower end cap 207 and the membrane element main body 201 can also be connected in a sealing manner through a sealing adhesive, and the sealing adhesive can be food-grade AB adhesive.

Further, the cylinder 101 is made of glass fiber reinforced plastic. The winding piece made of glass fiber materials is soaked in glue in advance, then the winding piece soaked with the glue is wound on the outer side surfaces of the membrane element main body 201, the upper end cover 202 and the lower end cover 207, then the glue is solidified to form the cylinder body 101 coated on the membrane element main body 201, and the cylinder body 101 is matched and fixed with the upper end cover 202 and the lower end cover 207 to further fix the membrane element main body 201, the upper end cover 202 and the lower end cover 207 into a whole, the sealed whole cylinder body 101 can ensure that the whole reverse osmosis membrane filter element has enough strength and tightness, and the cylinder body 101 is tightly attached to the outer side surface of the membrane element main body 201 to reduce the whole volume of the reverse osmosis membrane filter element, improve the connection strength, reduce the space for storing raw water and further reduce the TDS value of first cup of water.

According to the technical scheme, the upper end cover 202 and the cover body 102 are matched to form the raw water flow path 3 communicated with the raw water inlet 102a, the waste water flow path 4 communicated with the waste water outlet 102b and the pure water flow path 5 communicated with the pure water outlet 102c, the membrane element main body 201 is fixedly connected with the upper end cover 202 and the cylinder body 101 respectively, and then raw water directly enters the membrane element main body 201 for filtration after flowing into the raw water flow path 3, so that the structure is compact, the path from the raw water to the membrane element main body 201 is shortened, the TDS value of primary cup water is conveniently reduced, the assembly structure is simplified, the cost is reduced, the formation of each flow path is facilitated, and the assembly efficiency is improved.

Referring to fig. 1 to 2, in an embodiment, the filter assembly 20 further includes a central tube 205, one end of the central tube 205 is hermetically connected to the cover 102 and communicates with the pure water flow path 5, the other end of the central tube 205 is hermetically connected to the lower end cap 207, the membrane element main body 201 is wound around the central tube 205 to be cylindrical, and the central tube 205 provides a support for the membrane element main body 201, and the membrane element main body 201 is positioned and installed between the upper end cap 202 and the lower end cap 207 to facilitate the connection and the cooperation between the cylinder 101 and the filter assembly 20; the membrane element main body 201 has a raw water inlet 201a and a waste water outlet 201b on the end surface near the upper end cover 202, so that raw water flows into the raw water flow path 3 and directly enters the membrane element main body 201 through the raw water inlet 201a for filtration, part of pure water generated after filtration enters the pure water flow path 5 through the central tube 205, and the rest of pure water directly enters the waste water flow path 4 through the waste water outlet 201 b.

Further, referring to fig. 3 and 4 in combination, the upper end cap 202 is provided with a central hole 202a, a first through hole 202b and a second through hole 202c, the central tube 205 passes through the central hole 202a to be connected with the cover 102 in a sealing manner, the first through hole 202b is connected with the raw water inlet 201a and the raw water flow path 3, the second through hole 202c is connected with the waste water outlet 201b and the waste water flow path 4, it can be understood that the first through hole 202b is far away from the second through hole 202c and the central hole 202a, the second through hole 202c is arranged near the central hole 202a, wherein the central tube 205 is connected with the pure water flow path 5, the wall thereof is provided with a communication hole 205a, and further, when the raw water enters the membrane element main body 201 through the first through hole 202b and the raw water inlet 201a in sequence for filtration, a part of pure water filtered by the membrane element main body 201 flows into the pure water flow path 5 through the communication hole 205a inside surface of the membrane element 201, the remaining pure water passes through the end face of the membrane element main body 201 and flows into the wastewater flow path 4 through the wastewater outlet 201b and the second through hole 202c, and the pure water flow path 5 and the wastewater flow path 4 are separated from each other by the sealed connection of the central tube 205 and the cover 102, thereby preventing series flow. Wherein, first through-hole 202b and second through-hole 202c all are provided with a plurality ofly at the interval, and its quantity and shape can set up according to factors such as liquid velocity of flow demand and filter effect.

Specifically, as shown in fig. 4, a connecting rib is provided on a side of the upper end cap 202 facing the membrane element main body 201, and the upper end cap 202 is fixedly connected to the membrane element main body 201 through the connecting rib, wherein the connecting rib includes a first partition rib and a second partition rib, the upper end cap 202 is connected to an end face of the membrane element main body 201 through the first partition rib, so that raw water is intensively introduced into the membrane element main body 201 from the raw water inlet 201a, and the upper end cap 202 is connected to the end face of the membrane element main body 201 through the second partition rib, so that part of pure water generated after filtration is intensively flowed out of the membrane element main body 201 from the wastewater outlet 201b and into the wastewater flow path 4.

Referring to fig. 1, 3 and 5 in combination, in one embodiment, the upper cap 202 has a first sealing wall 203 surrounding the central hole 202a, the cap 102 has a second sealing wall 103 and a third sealing wall 104 surrounding the pure water discharge port 102c, the first sealing wall 203 and the second sealing wall 103 are connected to separate the raw water flow path 3 and the waste water flow path 4, and the third sealing wall 104 is located inside the second sealing wall 103 and connected to the central tube 205 to separate the waste water flow path 4 and the pure water flow path 5. That is, the first sealing wall 203 on the upper end cap 202 and the second sealing wall 103 on the cap body 102 are sealed and fixed to each other after assembly, so as to define the raw water flow path 3 and facilitate separation of the raw water flow path 3 and the waste water flow path 4, and the third sealing wall 104 on the cap body 102 and the central tube 205 are sealed and fixed to each other after assembly, so as to define the waste water flow path 4 and facilitate separation of the waste water flow path 4 and the pure water flow path 5, thereby avoiding series flow of raw water and pure water in each flow path and reducing the filtration effect of raw water.

Referring to fig. 2 and 5, in an embodiment, the cover body 102 includes a first connecting wall 105, the first connecting wall 105 is fixedly connected to the cylinder body 101 and is provided with a first glue containing hole 105a, that is, the first connecting wall 105 is clamped and fixed between the cylinder body 101 and the membrane element main body 201, so that a contact area is increased, and a connection strength between the cover body 102, the cylinder body 101 and the filter assembly 20 is improved, wherein a plurality of first glue containing holes 105a are arranged at intervals along the first connecting wall 105, which is convenient for improving a bonding effect of glue and further improves the connection strength; similarly, the lower end cover 207 includes the second connecting wall 208, the second connecting wall 208 is fixedly connected with the cylinder 101, and a second glue containing hole 208a is formed, that is, the second connecting wall 208 is clamped and fixed between the cylinder 101 and the membrane element main body 201, so that the contact area is increased, the connection strength between the lower end cover 207, the cylinder 101 and the filter assembly 20 is improved, wherein a plurality of second glue containing holes 208a are arranged at intervals along the second connecting wall 208, the glue adhesion effect is improved conveniently, and the connection strength is further improved. Of course, the utility model is not limited thereto, and in other embodiments, the cylinder 101 and the lower end cap 207 may also be an integral structure, that is, the cylinder 101 and the lower end cap 207 are both made of glass fiber reinforced plastic, and further tightly cover the membrane element main body 201, so as to ensure the sealing performance.

Referring to fig. 2, in an embodiment, at least a first ring groove 203a is formed in an outer side wall of the first sealing wall 203, a first sealing ring 204 is embedded in the first ring groove 203a, and the first sealing ring 204 abuts against the second sealing wall 103; at least a second ring groove 205b is formed in the outer wall of the central tube 205, a second sealing ring 206 is embedded in the second ring groove 205b, and the second sealing ring 206 is abutted to the third sealing wall 104, so that the raw water flow path 3, the waste water flow path 4 and the pure water flow path 5 are sealed and isolated to a great extent, series flow between the raw water and the pure water in each flow path is avoided, and the sealing performance of each flow path in the reverse osmosis membrane filter element is improved.

Referring to fig. 1 and 2, in an embodiment, the lower end cap 207 further includes a positioning protrusion 209, an outer wall of the positioning protrusion 209 is provided with at least a third annular groove 209a, a third sealing ring 210 is embedded in the third annular groove 209a, and the third sealing ring 210 abuts against an inner wall of the central tube 205, so that the central tube 205 is fixed to the lower end cap 207 in advance, and it is ensured that the central tube 205 can accurately pass through the central hole 202a of the upper end cap 202 and is fixedly connected to the third sealing wall 104 of the cover 102. Of course, the present invention is not limited thereto, and in other embodiments, the lower end cap 207 may be provided with a positioning groove, and the positioning groove is connected with the central tube 205 in a sealing manner.

The utility model also provides a water purifier, which comprises a reverse osmosis membrane filter element, wherein the specific structure of the reverse osmosis membrane filter element refers to the embodiments, and the water purifier adopts all the technical schemes of all the embodiments, so that the water purifier at least has all the beneficial effects brought by the technical schemes of the embodiments, and the details are not repeated.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A reverse osmosis membrane filter element is characterized by comprising

The device comprises a shell, a water inlet, a waste water outlet and a pure water outlet, wherein the shell comprises a cylinder body and a cover body which are fixedly connected; and

the filter assembly comprises a membrane element main body, an upper end cover and a lower end cover which are fixedly connected, the upper end cover is hermetically connected with the cover body and forms a raw water flow path communicated with the raw water inlet, a waste water flow path communicated with the waste water outlet and a pure water flow path communicated with the pure water outlet, the lower end cover is fixedly connected with the cylinder body to form an installation cavity, and the membrane element main body is arranged in the installation cavity and is tightly connected with the wall of the installation cavity;

wherein the raw water flows into the raw water flow path through the raw water inlet, and flows into the membrane element main body to be filtered to form pure water, a part of the pure water flows into the pure water flow path and is discharged through the pure water discharge port, and the rest of the pure water flows into the wastewater flow path and is discharged through the wastewater discharge port.

2. The reverse osmosis membrane cartridge of claim 1, wherein the cartridge is constructed of fiberglass.

3. The reverse osmosis membrane cartridge of claim 1, wherein the filter module further comprises a central tube, one end of the central tube is hermetically connected to the cover and communicates with the pure water flow path, the other end of the central tube is hermetically connected to the lower end cap, the membrane element body is wound around the central tube to have a cylindrical shape, and an end surface of the membrane element body adjacent to the upper end cap has a raw water inlet and a waste water outlet.

4. The reverse osmosis membrane cartridge of claim 3, wherein the upper cap is formed with a central hole through which the central tube is sealingly coupled to the cap body, a first through-hole communicating the raw water inlet with the raw water flow path, and a second through-hole communicating the waste water outlet with the waste water flow path.

5. The reverse osmosis membrane cartridge of claim 4, wherein the upper cap has a first sealing wall provided around the central hole, the cap has a second sealing wall and a third sealing wall provided around the pure water discharge port, the first sealing wall and the second sealing wall are connected to separate the raw water flow path and the waste water flow path, and the third sealing wall is positioned inside the second sealing wall and connected to the central tube to separate the waste water flow path and the pure water flow path.

6. The reverse osmosis membrane cartridge of claim 3, wherein the wall of the central tube is provided with communication holes.

7. The reverse osmosis membrane filter element of claim 1, wherein the cover comprises a first connecting wall fixedly connected with the barrel and provided with a first glue containing hole;

and/or the lower end cover comprises a second connecting wall, the second connecting wall is fixedly connected with the cylinder body, and a second glue containing hole is formed in the second connecting wall.

8. The reverse osmosis membrane filter element of claim 5, wherein the outer side wall of the first sealing wall is provided with at least a first ring groove, a first sealing ring is embedded in the first ring groove, and the first sealing ring is abutted against the second sealing wall;

and/or, at least a second annular groove is formed in the outer wall of the central pipe, a second sealing ring is embedded in the second annular groove, and the second sealing ring is abutted to the third sealing wall.

9. The reverse osmosis membrane filter element of claim 5, wherein the lower end cap further comprises a positioning protrusion, the outer wall of the positioning protrusion is provided with at least a third ring groove, a third sealing ring is embedded in the third ring groove, and the third sealing ring abuts against the inner wall of the central tube.

10. A water purifier comprising the reverse osmosis membrane cartridge according to any one of claims 1 to 9.

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