CN216445057U

CN216445057U - Reverse osmosis filter element assembly and water purifier

Info

Publication number: CN216445057U
Application number: CN202123088759.4U
Authority: CN
Inventors: 罗安泺; 杨玖林; 玄珍雨
Original assignee: Foshan Micro Midea Filter Manufacturing Co Ltd
Current assignee: Foshan Micro Midea Filter Manufacturing Co Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-05-06
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses a reverse osmosis filter element assembly and a water purifier, wherein the reverse osmosis filter element assembly comprises a shell assembly and a reverse osmosis assembly, and the shell assembly is provided with an installation cavity, and a raw water inlet, a waste water outlet and a pure water outlet which are communicated with the installation cavity. The reverse osmosis assembly is installed in the installation cavity for carry out the infiltration to the raw water and filter in order to generate waste water and pure water, the reverse osmosis assembly is equipped with water filtering district and pure water district, water filtering district communicates respectively the raw water inlet with the waste water discharge port, pure water district intercommunication the pure water discharge port. The shell assembly is provided with a piston cavity communicated with the pure water area, and a piston is arranged in the piston cavity and used for pushing the pure water in the piston cavity into the reverse osmosis assembly so as to discharge wastewater in the reverse osmosis assembly. The technical scheme of the utility model can reduce the TDS value of the filtered first cup of water.

Description

Reverse osmosis filter element assembly and water purifier

Technical Field

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

Background

In the prior art, a water purifier filters raw water into pure water by means of a filtering component inside the water purifier. However, when the water purifier is in a standby state, raw water, pure water and waste water exist in the water purifier at the same time, wherein the raw water and the waste water are all located between the reverse osmosis filter element assemblies, the pressure applied to the reverse osmosis filter element assemblies disappears due to the standby state of the water purifier, and ions in the waste water can be diffused into the raw water due to the diffusion effect of molecules until the ions in the raw water and the waste water reach a balance, so that the TDS value of the raw water in the reverse osmosis filter element is increased, namely the TDS value is far higher than the raw water but lower than the waste water. When the water purifier is used again, the TDS value of the inlet water in the membrane is higher, so that the TDS value of the filtered pure water is also higher, and the TDS value of the filtered first cup of water is higher.

SUMMERY OF THE UTILITY MODEL

The main object of the present invention is to propose a reverse osmosis cartridge assembly aimed at reducing the TDS value of the first cup of water filtered.

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

the shell assembly is provided with an installation cavity, and a raw water inlet, a waste water outlet and a pure water outlet which are communicated with the installation cavity;

the reverse osmosis assembly is arranged in the installation cavity and is used for performing osmosis filtration on raw water to generate wastewater and pure water, the reverse osmosis assembly is provided with a water filtering area and a pure water area, the water filtering area is respectively communicated with the raw water inlet and the wastewater outlet, and the pure water area is communicated with the pure water outlet;

the shell assembly is provided with a piston cavity communicated with the pure water area, and a piston is arranged in the piston cavity and used for pushing the pure water in the piston cavity into the reverse osmosis assembly so as to discharge wastewater in the reverse osmosis assembly.

Optionally, the housing assembly includes a first cover assembly and a second cover assembly respectively disposed at two ends of the reverse osmosis assembly, and the raw water inlet, the waste water outlet, and the pure water outlet are disposed at least on one of the first cover assembly and the second cover assembly.

Optionally, the raw water inlet, the wastewater outlet and the pure water outlet are all disposed on the first cover assembly, the piston chamber is disposed on the second cover assembly, the first cover assembly comprises a first end cover and a first connecting piece, the first end cover is connected with the reverse osmosis assembly, the first connecting piece is disposed between the first end cover and the reverse osmosis assembly, a first blocking portion and a second blocking portion are disposed between the first connecting piece and the first end cover, the first blocking portion separates the raw water inlet and the wastewater outlet, and the second blocking portion separates the wastewater outlet and the pure water outlet;

the second lid subassembly includes second end cover and second connecting piece, the one end of second connecting piece is connected reverse osmosis subassembly, other end opening, the second end cover lid closes the opening forms the piston chamber, just be equipped with the fender position piece on the second connecting piece, in order to block the water filtering district, and with pure water district intercommunication.

Optionally, an elastic member is arranged between the second end cover and the second connecting member, one end of the elastic member is connected with the second end cover, and the other end of the elastic member is connected with the piston, so that the piston always has a tendency of deviating from the second end cover.

Optionally, the first blocking portion includes a first blocking member annularly disposed inside the first end cap and a second blocking member annularly disposed inside the second connecting member, the first blocking member abuts against the second blocking member, and a first sealing member is disposed between the first blocking member and the second blocking member.

Optionally, the housing assembly further includes a filter element housing, the filter element housing is connected to the first cover assembly and the second cover assembly, and the filter element housing, the first cover assembly and the second cover assembly enclose to form the installation cavity.

Optionally, the material of the filter element shell is glass fiber reinforced plastic.

Optionally, the reverse osmosis subassembly include the center tube and the winding in the reverse osmosis spare of center tube, the center tube constitutes pure water district, reverse osmosis spare constitutes the water filtering district, be equipped with the connecting hole on the center tube, in order to communicate pure water district with the water filtering district, the center tube both ends are connected respectively first lid body subassembly and second lid body subassembly.

Optionally, a second sealing element is disposed between the center tube and the first cover assembly and between the center tube and the second cover assembly.

The utility model also provides a water purifier which is provided with a reverse osmosis water purification system, wherein the reverse osmosis water purification system of the water purifier comprises a water inlet pipeline, a pure water pipeline, a wastewater pipeline and a reverse osmosis filter core assembly, the reverse osmosis filter core assembly comprises a shell assembly and a reverse osmosis assembly, and the shell assembly is provided with an installation cavity, and a raw water inlet, a wastewater outlet and a pure water outlet which are communicated with the installation cavity. The reverse osmosis assembly is installed in the installation cavity and is used for performing osmotic filtration on raw water to generate wastewater and pure water, the reverse osmosis assembly is provided with a water filtering area and a pure water area, the water filtering area is communicated with a raw water inlet and a wastewater outlet respectively, and the pure water area is communicated with a pure water outlet. Wherein, be equipped with the piston chamber with pure water district intercommunication on the casing subassembly, be equipped with the piston in the piston for in pushing the pure water in the piston chamber reverse osmosis subassembly, thereby the waste water in the discharge reverse osmosis subassembly. The water inlet pipeline is communicated with the raw water inlet, the waste water pipeline is communicated with the waste water outlet, and the pure water pipeline is communicated with the pure water outlet.

According to the technical scheme, the installation cavity, the raw water inlet, the waste water outlet and the pure water outlet which are communicated with the installation cavity are formed in the shell assembly, the reverse osmosis assembly is installed in the installation cavity, the reverse osmosis assembly divides the installation cavity into the water filtering area and the pure water area, the water filtering area is communicated with the raw water inlet and the waste water outlet respectively, and the pure water area is communicated with the pure water outlet. So that the raw water inlet and the waste water outlet are directly connected with the reverse osmosis component, and a raw water cavity and a waste water cavity are omitted. Therefore, the proportion of raw water and waste water in the reverse osmosis filter element assembly is reduced, and only a small amount of raw water and waste water exist in the water filtering area to generate osmosis. Simultaneously, set up the piston chamber, be equipped with the piston chamber with pure water district intercommunication on the casing subassembly, be equipped with the piston in the piston chamber, when water purifier during operation, the drive raw water gets into the supercharging equipment that drainage district produced reverse osmosis, provides drive power for the rivers of intaking to extrude the piston chamber, make the piston chamber compressed, partial pure water is stored in the piston chamber. When the water purifier was closed, the raw water inlet all was closed with the pure water inlet, only the effluent discharge port is opened, the piston moves towards reverse osmosis assembly, thereby extrude the pure water in the piston chamber to drainage district and pure water district, the raw water and the waste water that will be in the drainage district replace into the pure water, make the raw water and the waste water in drainage district discharge by the effluent discharge port, at this moment, the drainage district is the pure water, reach ionic balance, thereby the TDS value of drainage district 121 has been reduced, make the TDS value of the first cup of water after the filtration also lower, thereby the problem that the first cup of water TDS value after the filtration is too high has been solved.

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 cartridge assembly of the present invention;

FIG. 2 is an exploded view of the reverse osmosis cartridge assembly of FIG. 1;

FIG. 3 is a schematic perspective view of a first end cap of the reverse osmosis cartridge assembly of FIG. 1;

FIG. 4 is an assembly view of a first connector and cartridge housing of the reverse osmosis cartridge assembly of FIG. 1;

fig. 5 is an assembly view of a second connector and cartridge housing of the reverse osmosis cartridge assembly of fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Reverse osmosis filter element assembly	131	First end cap
110	Shell assembly	132	First connecting piece
				111	Mounting cavity	133	First barrier part
112	Raw water inlet	134	Second barrier part
				113	Waste water discharge port	135	First barrier
114	Pure water outlet	136	Second barrier
				115	Piston cavity	137	First seal member
116	Piston	140	Second cover body assembly
				120	Reverse osmosis module	141	Second end cap
121	Water filtering area	142	Second connecting piece
				122	Pure water area	143	Gear piece
123	Central tube	144	Elastic piece
				124	Reverse osmosis member	150	Filter element shell
125	Connecting hole	160	Second seal
				130	First cover body assembly

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.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. 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.

In the prior art, the reverse osmosis filter element assembly 100 generally has two structures, one structure is that a seal ring is arranged outside a reverse osmosis membrane to separate raw water from waste water, namely, one end of the reverse osmosis membrane is used for water inlet, the other end of the reverse osmosis membrane is used for waste water, and a central pipe 123 is used for pure water outlet; the other one is sealed at the upper end and the lower end, waste hole water is reserved at the upper end cover, a water inlet hole is formed in the side face, the lower end cover is sealed, and pure water is discharged from the central pipe 123.

However, the reverse osmosis membrane filter core is installed in filter core casing 150 after, the intake, the proportion of waste water in filter core system is far greater than the pure water, the complete machine is shut down the back, the solenoid valve that intakes is closed, the reverse osmosis membrane filter core forms a confined space, waste water in the membrane area in the filter core and the waste water of filter core inner wall and reverse osmosis membrane waste water end can mix with the raw water in the filter core and dilute, intake end TDS in whole filter core is very high like this, and this part of water is more, when waiting to start the machine once more, the solenoid valve that intakes is opened, under the effect of pressure, this part of high TDS value water that the filter core exists can filter earlier, because intake TDS value improves, the pure water TDS value of natural restart is just high, so general first glass of water is not advised to drink.

In order to reduce the TDS value of the first cup of water so that a user can drink the first cup of water directly, the present invention provides a reverse osmosis filter element assembly 100 suitable for various water purifiers.

In the embodiment of the present invention, as shown in fig. 1 and 2, the reverse osmosis cartridge assembly 100 includes a housing assembly 110 and a reverse osmosis assembly 120, and the housing assembly 110 is formed with a mounting chamber 111 and a raw water inlet 112, a waste water outlet 113 and a pure water outlet 114 which are communicated with the mounting chamber 111. The reverse osmosis module 120 is installed in the installation cavity 111 and is used for performing osmotic filtration on raw water to generate wastewater and pure water, the reverse osmosis module 120 is provided with a filtered water area 121 and a pure water area 122, the filtered water area 121 is respectively communicated with the raw water inlet 112 and the wastewater outlet 113, and the pure water area 122 is communicated with the pure water outlet 114. Wherein, a piston cavity 115 communicated with the pure water area 122 is arranged on the shell component 110, and a piston 116 is arranged in the piston cavity 115 and used for pushing the pure water in the piston cavity 115 into the reverse osmosis component 120, thereby discharging the wastewater in the reverse osmosis component 120.

Specifically, the shell assembly 110 is provided with a raw water inlet 112, a waste water outlet 113, a pure water outlet 114 and an installation cavity 111, the reverse osmosis assembly 120 is installed in the installation cavity 111, the reverse osmosis assembly 120 divides the installation cavity 111 into a water filtering area 121 and a pure water area 122, and the water filtering area 121 is respectively communicated with the raw water inlet 112 and the waste water outlet 113. After entering from raw water inlet 112, rivers directly flow into reverse osmosis module 120 and filter, do not set up the raw water chamber promptly, and reverse osmosis module 120 filters the waste water that forms also directly by waste water discharge port 113 and discharge, do not set up the waste water chamber promptly, so when the purifier is in standby state, among the reverse osmosis unit, only water filtering area 121 has a small amount of raw water and waste water and produces the osmosis, has reduced the proportion of raw water and waste water. And a piston chamber 115 communicated with the pure water region 122 is provided on the housing assembly 110, a piston 116 is provided in the piston chamber 115, and when the water purifier is operated, raw water is driven to enter a water filtering region 121 to generate a pressurizing device for reverse osmosis, thereby providing a driving force for the inflow water flow, so that the piston 116 is pressed, and a part of pure water is stored in the piston chamber 115. When the water purifier is closed, the raw water inlet 112 and the pure water outlet 114 are both closed, only the waste water outlet 113 is opened, and the piston 116 is moved toward the reverse osmosis module 120, thereby pressing pure water in the piston chamber 115 to the filtered water region 121 and the pure water region 122, replacing the raw water and the waste water in the filtered water region 121 with pure water, so that the raw water and the waste water of the filtered water region 121 are discharged through the waste water outlet 113.

According to the technical scheme, an installation cavity 111, a raw water inlet 112, a waste water outlet 113 and a pure water outlet 114 which are communicated with the installation cavity 111 are formed in a shell assembly 110, a reverse osmosis assembly 120 is installed on the installation cavity 111, the installation cavity 111 is divided into a water filtering area 121 and a pure water area 122 by the reverse osmosis assembly 120, the water filtering area 121 is respectively communicated with the raw water inlet 112 and the waste water outlet 113, and the pure water area 122 is communicated with the pure water outlet 114. So that the raw water inlet 112 and the waste water outlet 113 are directly connected with the reverse osmosis module 120, and a raw water cavity and a waste water cavity are omitted. Thereby reducing the ratio of raw water and wastewater in the reverse osmosis cartridge assembly 100, and only a small amount of raw water and wastewater existing at the reverse osmosis module 120, the raw water inlet 112, and the wastewater outlet 113 produces osmosis. Meanwhile, a piston cavity 115 is arranged, the piston cavity 115 communicated with the pure water area 122 is formed in the shell assembly 110, a piston 116 is arranged in the piston cavity 115, when the water purifier works, raw water is driven to enter a water filtering area 121 to generate a pressurizing device with a reverse osmosis effect, driving force is provided for water inflow, and therefore the piston cavity 115 is extruded, the piston cavity 115 is compressed, and part of pure water is stored in the piston cavity 115. When the water purifier was closed, raw water inlet 112 and pure water discharge port 114 were all closed, only waste water discharge port 113 opened, piston 116 moved towards reverse osmosis assembly 120, thereby extrude the pure water in piston cavity 115 to drainage area 121 and pure water area 122, the raw water and the waste water replacement that will be in drainage area 121 become the pure water, make the raw water and the waste water of drainage area 121 discharge by waste water discharge port 113, at this moment, drainage area 121 is the pure water, reach ionic balance, thereby the TDS value of drainage area 121 has been reduced, make the TDS value of the first cup of water after filtering also lower, thereby the too high problem of first cup of water TDS value after filtering has been solved.

Referring to fig. 1 to 5, in an embodiment, the housing assembly 110 includes a first cover assembly 130 and a second cover assembly 140 respectively disposed at two ends of the reverse osmosis module 120, and the raw water inlet 112, the waste water outlet 113, and the pure water outlet 114 are disposed at least on one of the first cover assembly 130 and the second cover assembly 140. Specifically, the raw water inlet 112, the waste water outlet 113, and the pure water outlet 114 are disposed at least on one of the first cover assembly 130 and the second cover assembly 140. That is, the raw water inlet 112, the waste water outlet 113, and the pure water outlet 114 may be disposed on the first cover assembly 130, or may be disposed on the second cover assembly 140; or two of the raw water inlet 112, the waste water outlet 113 and the pure water outlet 114 are disposed on the first cover assembly 130, and the other is disposed on the second cover assembly 140; or one of the raw water inlet 112, the waste water outlet 113 and the pure water outlet 114 is disposed on the first cover assembly 130, and the other two are disposed on the second cover assembly 140. The positions of the raw water inlet 112, the waste water outlet 113 and the pure water outlet 114 are not limited and can be flexibly arranged. The piston cavity 115 may be disposed on the first cover assembly 130 or the second cover assembly 140. And the piston chamber 115 may directly communicate with the pure water discharge port 114, i.e., the pure water discharge port 114 communicates with the pure water section 122 through the piston chamber 115. The raw water inlet 112 and the waste water outlet 113 cannot communicate with the piston chamber 115, but may be disposed on both the first cover assembly 130 and the second cover assembly 140, or may be disposed on both the first cover assembly 130 and the second cover assembly 140.

In one embodiment, the raw water inlet 112, the waste water outlet 113 and the pure water outlet 114 are disposed on the first cover assembly 130, the piston chamber 115 is disposed on the second cover assembly 140, the first cover assembly 130 includes a first end cap 131 and a first connecting member 132, the first end cap 131 is connected to the reverse osmosis module 120, the first connecting member 132 is disposed between the first end cap 131 and the reverse osmosis module 120, a first blocking portion 133 and a second blocking portion 134 are disposed between the first connecting member 132 and the first end cap 131, the first blocking portion 133 separates the raw water inlet 112 and the waste water outlet 113, and the second blocking portion 134 separates the waste water outlet 113 and the pure water outlet 114. The second cover assembly 140 includes a second end cap 141 and a second connecting member 142, one end of the second connecting member 142 is connected to the reverse osmosis assembly 120, the other end is open, the second end cap 141 covers the opening to form the piston cavity 115, and a blocking member 144 is disposed on the second connecting member 142 to block the filtered water region 121 and communicate with the pure water region 122.

Specifically, the first end cap 131 and the first connecting member 132 are enclosed, a first blocking portion 133 and a second blocking portion 134 are disposed between the first connecting member 132 and the first end cap 131, the first blocking portion 133 separates the raw water inlet 112 and the wastewater outlet 113 to reduce the possibility of mutual leakage between the raw water and the wastewater, and the second blocking portion 134 separates the wastewater outlet 113 and the pure water outlet 114 to reduce the possibility of mutual leakage between the pure water and the wastewater. And the first end cap 131 and the first connector 132 only enclose to form the raw water inlet 112, the wastewater outlet 113 and the pure water outlet 114, so that the raw water inlet 112 and the wastewater outlet 113 are directly connected with the reverse osmosis module 120, and the ratio of raw water to wastewater is reduced. The pure water chamber is enclosed by the second end cap 141 and the second connecting member 142, and the second connecting member 142 is provided with a blocking member 144 to block raw water and waste water from flowing into the piston chamber 115 and polluting pure water in the piston chamber 115.

When the piston 116 is disposed in the piston cavity 115, in an embodiment, an elastic member 144 is disposed between the second end cap 141 and the second connecting member 142, and one end of the elastic member 144 is connected to the second end cap 141 and the other end is connected to the piston 116, so that the piston 116 always has a tendency to face away from the second end cap 141. Specifically, the elastic member 144 is disposed between the second end cap 141 and the piston 116, so that the piston 116 always tends to be away from the second end cap 141, and when the water purifier is operated, the water is driven to enter the water filtering region 121 to generate a pressurizing device for reverse osmosis, thereby providing a driving force for the flow of the inlet water, and thus squeezing the piston chamber 115, so that a part of the pure water is stored in the piston chamber 115. When the water purifier is closed, the raw water inlet 112 and the pure water outlet 114 are both closed, only the wastewater outlet 113 is opened, the pressurizing device is also slowly stopped, the pressing force applied to the piston 116 is slowly disappeared, the elastic member 144 pushes the piston 116 to move, and the pure water in the piston cavity 115 is pressed out, so that the pure water in the piston cavity 115 replaces the raw water and the wastewater in the water filtering area 121, and the raw water and the wastewater in the water filtering area 121 are discharged from the wastewater outlet 113.

In this embodiment, the elastic member 144 is a compression spring, which has a simple structure and is convenient to install. Of course, in other embodiments, the elastic member 144 may also be an elastic structure such as a spring plate.

Referring again to fig. 1 to 5, in an embodiment, the first blocking portion 133 includes a first blocking member 135 disposed around the first end cap 131 and a second blocking member 136 disposed around the second connecting member 142, the first blocking member 135 abuts against the second blocking member 136, and a first sealing member 137 is disposed between the first blocking member 135 and the second blocking member 136. Specifically, the first stopper 135 is disposed around the inside of the second end cap 141, the second stopper 136 is disposed around the second connecting member 142, and the first stopper 135 abuts against the second stopper 136. Thereby separating the raw water inlet 112 and the waste water outlet 113, and having simple structure and convenient installation. And a first sealing member 137 is disposed between the first barrier 135 and the second barrier 136 to enhance the sealing strength of the first barrier 135 and the second barrier 136 and reduce the possibility of the inter-permeation of the wastewater and the raw water. Wherein, the first sealing member 137 is a sealing ring, which is simple in structure and convenient to install.

Referring to fig. 1 to fig. 2, in an embodiment, the housing assembly 110 further includes a filter element housing 150, the filter element housing 150 is connected to the first cover assembly 130 and the second cover assembly 140, and the filter element housing 150, the first cover assembly 130 and the second cover assembly 140 enclose to form the installation cavity 111. Specifically, the filter cartridge housing 150 surrounds the outer periphery of the reverse osmosis module 120. And one end is connected to the first cover assembly 130, and the other end is connected to the second cover assembly 140, so that the filter element housing 150, the first cover assembly 130 and the second cover assembly 140 enclose the installation cavity 111.

In order to reduce water leakage from between the filter element housing 150 and the first cover assembly 130 or between the filter element housing 150 and the second cover assembly 140, the first cover assembly 130 and the filter element housing 150 may be integrally formed, or the first cover assembly 130 and the filter element housing 150 may be integrally formed; the first cover assembly 130 and the second cover assembly 140 can also be respectively inserted into the filter element housing 150; or the first cover assembly 130 and the second cover assembly 140 are respectively screwed or bonded with the filter element shell 150; or between the cartridge housing 150 and the first cap assembly 130 and between the cartridge housing 150 and the second cap assembly 140.

In one embodiment, the material of the cartridge housing 150 is fiberglass. Specifically, the glass fiber reinforced plastic is soaked with glue by glass fiber, immediately wound on the corresponding position of the filter cartridge housing 150, and cured to form glass fiber reinforced plastic, so as to connect the filter cartridge housing 150, the first cover assembly 130 and the second cover assembly 140. Not only is the connection strength between the filter cartridge housing 150 and the first cover assembly 130 and between the filter cartridge housing 150 and the second cover assembly 140 increased, but also the possibility of water leakage from between the filter cartridge housing 150 and the first cover assembly 130 or between the filter cartridge housing 150 and the second cover assembly 140 is reduced.

Referring again to fig. 1 to 2, in an embodiment, the reverse osmosis module 120 includes a central pipe 123 and a reverse osmosis element 124 wound around the central pipe 123, the central pipe 123 forms a pure water area 122, the reverse osmosis element 124 forms a filtered water area 121, a connection hole 125 is formed on the central pipe 123 to connect the pure water area 122 and the filtered water area 121, and two ends of the central pipe 123 are respectively connected to the first cover module 130 and the second cover module 140. Specifically, the reverse osmosis member 124 is wound around the central pipe 123 and is communicated with the central pipe 123 through a connecting hole 125 formed in the central pipe 123, the reverse osmosis member 124 forms a filtered water area 121, the inside of the central pipe 123 forms a purified water area 122, and the purified water area 122 is communicated with the filtered water area 121 through the connecting hole 125. When raw water enters the reverse osmosis member 124 from the raw water inlet 112, the raw water enters the filtered water region 121, the filtered water region 121 is filtered to form waste water and pure water, the waste water is discharged from the waste water outlet 113, the pure water enters the central tube 123 from the connecting hole 125, and then flows into the pure water chamber from the central tube 123 and is discharged from the pure water outlet 114. The two ends of the central tube 123 are respectively connected to the first cover assembly 130 and the second cover assembly 140, and since the pure water chamber is disposed on the first cover assembly 130, the first cover assembly 130 is connected to one end of the central tube 123 to communicate with the pure water outlet 114, and the other end communicates with the pure water region 122 on the second cover assembly 140 to discharge pure water.

To reduce the possibility of pure water leakage, in one embodiment, a second sealing member 160 is disposed between the central tube 123 and the first cover assembly 130 and between the central tube 123 and the second cover assembly 140. Specifically, a second seal 160 is provided between the center tube 123 and the first cap assembly 130 to reduce the possibility of leakage of pure water to the waste water discharge port 113. The second sealing member 160 is provided between the central pipe 123 and the first cover assembly 130, to reduce the possibility of leakage of pure water into the filtered water area 121, and also to reduce the possibility of leakage of waste water or raw water into the pure water to contaminate the pure water. The second sealing member 160 is a sealing ring, which is simple in structure and convenient to install.

The present invention also provides a water purifier having a reverse osmosis water purification system, the reverse osmosis water purification system including a water inlet pipeline, a pure water pipeline, a wastewater pipeline, and a reverse osmosis filter cartridge assembly 100, the reverse osmosis filter cartridge assembly 100 being constructed as described in the above embodiments, wherein the water inlet pipeline is communicated with a raw water inlet 112, the wastewater pipeline is communicated with a wastewater outlet 113, and the pure water pipeline is communicated with a pure water outlet 114. Since the water purifier adopts all the technical schemes of all the embodiments, at least all the beneficial effects brought by the technical schemes of the embodiments are achieved, and the detailed description is omitted.

The above description is only a preferred embodiment of the present invention, and is 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

1. A reverse osmosis cartridge assembly, comprising:

the shell assembly is provided with a piston cavity communicated with the pure water area, and a piston is arranged in the piston and used for pushing the pure water in the piston cavity into the reverse osmosis assembly so as to discharge the wastewater in the reverse osmosis assembly.

2. The reverse osmosis filter cartridge assembly of claim 1, wherein the housing assembly comprises a first cover assembly and a second cover assembly disposed at opposite ends of the reverse osmosis assembly, and the raw water inlet, the waste water outlet, and the pure water outlet are disposed at least on one of the first cover assembly and the second cover assembly.

3. The reverse osmosis filter element assembly of claim 2, wherein the raw water inlet, the wastewater outlet, and the pure water outlet are disposed in the first cover assembly, the piston chamber is disposed in the second cover assembly, the first cover assembly comprises a first end cap and a first connector, the first end cap is connected to the reverse osmosis assembly, the first connector is disposed between the first end cap and the reverse osmosis assembly, a first blocking portion and a second blocking portion are disposed between the first connector and the first end cap, the first blocking portion separates the raw water inlet and the wastewater outlet, and the second blocking portion separates the wastewater outlet and the pure water outlet;

4. The reverse osmosis filter cartridge assembly of claim 3, wherein an elastic member is disposed between the second end cap and the second connector, one end of the elastic member being connected to the second end cap and the other end being connected to the piston, such that the piston always has a tendency to face away from the second end cap.

5. The reverse osmosis filter cartridge assembly of claim 4, wherein the first stop comprises a first stop member disposed around the interior of the first end cap and a second stop member disposed around the interior of the second connector, the first stop member abutting the second stop member with a first seal disposed therebetween.

6. The reverse osmosis filter cartridge assembly of claim 2, wherein the housing assembly further comprises a filter cartridge housing, the filter cartridge housing connects the first cover assembly and the second cover assembly, and the filter cartridge housing, the first cover assembly, and the second cover assembly enclose the mounting cavity.

7. The reverse osmosis filter cartridge assembly of claim 6, wherein the filter cartridge housing is made of glass reinforced plastic.

8. The reverse osmosis filter element assembly of claim 2, wherein the reverse osmosis assembly comprises a central tube and a reverse osmosis element wound around the central tube, the central tube forms the pure water region, the reverse osmosis element forms the filtered water region, the central tube is provided with a connecting hole for communicating the pure water region with the filtered water region, and two ends of the central tube are respectively connected with the first cover body assembly and the second cover body assembly.

9. The reverse osmosis cartridge assembly of claim 8, wherein a second seal is provided between the center tube and the first cover assembly and between the center tube and the second cover assembly.

10. A water purifier having a reverse osmosis water purification system, wherein the reverse osmosis water purification system of the water purifier comprises a water inlet line, a pure water line, a wastewater line and the reverse osmosis cartridge assembly of claims 1 to 9, wherein the water inlet line is communicated with the raw water inlet, the wastewater line is communicated with the wastewater outlet, and the pure water line is communicated with the pure water outlet.