CN217988531U

CN217988531U - Filter element assembly and water purifier

Info

Publication number: CN217988531U
Application number: CN202222284982.4U
Authority: CN
Inventors: 韩升学; 朱萍萍; 任海波; 余梦泽
Original assignee: Zhejiang Supor Kitchen and Bathroom Electrical Appliance Co Ltd
Current assignee: Zhejiang Supor Kitchen and Bathroom Electrical Appliance Co Ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-12-09
Anticipated expiration: 2032-08-25

Abstract

The embodiment of the utility model provides a filter element group spare and purifier. The filter element assembly comprises a filter shell and a reverse osmosis filter element, the filter shell is provided with a water inlet, a pure water outlet and a wastewater outlet, the axis of the pure water outlet is superposed with the central axis of the filter shell, and the wastewater outlet and the water inlet are in an annular shape concentrically arranged with the pure water outlet; the reverse osmosis filter core sets up in the filter shell, and the water inlet communicates to the end of intaking of reverse osmosis filter core, and the pure water outlet communicates to the pure water end of reverse osmosis filter core, and the waste water outlet communicates to the waste water end of reverse osmosis filter core, is provided with the check valve of intaking be connected with the water inlet in the filter shell. When changing the filter element group spare, the unable water outflow from the water inlet of water check valve that intakes of water that remains in the filter element group spare. Therefore, the waste of water resources can be reduced, and the use cost of a user is reduced. And the problem that the user, the inside of the water purifier or the ground of the scene where the water purifier is installed and the like are splashed can be reduced, so that the workload of cleaning the user is reduced, and the replacement safety is improved.

Description

Filter element assembly and water purifier

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to a filter element group spare and purifier that has it.

Background

With the increasing demand of people for quality of life, water purifiers have become essential living goods basically.

Water purifiers typically filter through a filter cartridge assembly. Due to the limitation of factors such as difference of water quality and service life of the filter element assembly, the filter element assembly needs to be replaced periodically after the water purifier is used for a period of time.

When the water purifier is used, part of water can be remained in the filter element component. When the filter element assembly is removed for replacement, water remaining in the filter element assembly can flow out through the water inlet. Therefore, water resources are wasted, and the use cost of users is high. In addition, the effluent water can splash the inside of a user and the water purifier or the ground of a scene where the water purifier is installed, so that the cleaning workload of the user is increased, certain danger exists, and the user experience is poor.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems of the prior art, according to one aspect of the present invention, a filter element assembly is provided. The filter element assembly comprises: the filter shell is provided with a water inlet, a pure water outlet and a wastewater outlet, the pure water outlet is superposed with the central axis of the filter shell, and the wastewater outlet and the water inlet are in a ring shape concentrically arranged with the pure water outlet; and the reverse osmosis filter element is arranged in the filter shell, the water inlet is communicated to the water inlet end of the reverse osmosis filter element, the pure water outlet is communicated to the pure water end of the reverse osmosis filter element, the waste water outlet is communicated to the waste water end of the reverse osmosis filter element, and a water inlet check valve connected with the water inlet is arranged in the filter shell.

When the filter element assembly is used for preparing pure water, raw water with certain water pressure can enable the water inlet check valve to be communicated. Therefore, raw water can be smoothly filtered by the reverse osmosis filter element. When the filter element assembly needs to be replaced, the user can remove the filter element assembly. At this moment, the water retained in the filter element assembly can not flow out from the water inlet through the water inlet check valve. Therefore, the waste of water resources can be reduced, and the use cost of a user is reduced. Moreover, the problem that the inside of a user and the water purifier or the ground of a scene where the water purifier is installed and the like are splashed can be reduced, so that the cleaning workload of the user can be reduced, the replacement safety is improved, and the user experience is better. The filter element assembly can be selectively aligned with an external waterway so as to be mounted to an external component such as a filter base in an in-line mounting mode. And, because the pure water outlet is located the center axis of straining the shell, waste water outlet and water inlet can be the annular with the concentric setting of pure water outlet, and the filter element group spare also can select the mounting means of rotation type to install to external parts such as straining the seat, and need not worry rotatory angular deviation and lead to unable the intercommunication with outside water route. Therefore, the filter element assembly has stronger applicability and wider application range.

Exemplarily, still be provided with the waste water check valve of being connected with the waste water export in the filter shell, be provided with the pure water check valve in the pure water export. When the filter element assembly is used for preparing pure water, the pure water with certain water pressure can enable the pure water check valve to be conducted. Thus, the pure water can smoothly flow out through the pure water outlet. Meanwhile, the waste water with certain water pressure can lead the waste water check valve to be conducted. Thus, the wastewater can smoothly flow out through the wastewater outlet. When the filter element assembly needs to be replaced, the user can remove the filter element assembly. At this moment, pure water and waste water that remain in the filter element group spare are crossed too lowly because of water pressure and are unable through pure water check valve and waste water check valve to unable pure water export and the outflow of waste water export of passing through. Therefore, the waste of water resources can be further reduced, and the use cost of a user is further reduced. Moreover, the problem that the user, the inside of the water purifier or the ground of a scene where the water purifier is installed and the like are splashed can be further reduced, so that the workload of cleaning the user can be reduced, the replacement safety is improved, and the user experience is better.

Illustratively, the pure water outlet exposes a pure water check valve. So set up, be convenient for watch the state of pure water check valve to can in time maintain or change the pure water check valve.

Illustratively, the pure water outlet extends outwardly from an end face of the filter housing, and the waste water outlet and the water inlet are both disposed on the end face. When installation filter element group spare, the pure water export can be pegged graft earlier to external parts such as filter seat on, therefore the pure water export can play predetermined position's effect to be convenient for install.

Illustratively, the filter housing includes a filter cartridge, a lower cover body and a conversion head, the lower cover body is connected to a lower end of the reverse osmosis filter cartridge, the lower cover body is positioned between the filter cartridge and the conversion head, the lower cover body and the filter cartridge are at least partially spaced apart to form a water inlet, the lower cover body and the conversion head are at least partially spaced apart to form a wastewater outlet, and the conversion head forms a pure water outlet. So set up, through split type three part, can make the manufacturing of filter element group spare simpler.

Exemplarily, the filter element group spare still includes the center tube of plug-in connection to the reverse osmosis filter core, and the inside wall of reverse osmosis filter core forms the pure water end, is provided with the first through-hole of intercommunication between pure water end and pure water outlet on the lateral wall of center tube. So set up, the center tube can be used for supporting the reverse osmosis filter core to can avoid the reverse osmosis filter core to warp under hydraulic long-term effect.

Illustratively, the filter element assembly further comprises a straight-through pipe, and two ends of the straight-through pipe are respectively inserted into the pure water outlet and the central pipe. So set up, through the pipe can make pure water outlet and center tube aim at the connection to make the water route unobstructed.

Exemplarily, be provided with the guide ring that is connected to the inside wall of conversion head in the pure water outlet, the pure water check valve includes shutoff piece and elastic component, the shutoff piece is including wearing to establish the guide section of guide ring and being connected to the shutoff section of guide section, the pure water outlet exposes the shutoff section, the shutoff piece is portable between the off-position of shutoff section shutoff pure water outlet and the shutoff section and the spaced apart on-position of pure water outlet, the elastic component supports and leans on between the end wall of guide ring and the shutoff section for exert the elastic force towards the off-position to the shutoff section. So set up, pure water check valve's structure is comparatively succinct, low in manufacturing cost.

Exemplarily, a limiting member connected to the inner side wall of the conversion head is further arranged in the pure water outlet, and the plugging section abuts against the limiting member when the plugging member is at the cut-off position. So set up, can prevent that the shutoff piece from pure water outlet slippage to ensure the stable performance of pure water check valve.

Illustratively, a waste water through hole is further formed in the conversion head and communicated to the waste water outlet, and a waste water check valve is connected to the waste water through hole. So set up, the waste water check valve fixed connection of being convenient for.

Illustratively, the filter element assembly further comprises a scale inhibiting filter element, the filter shell further comprises a middle cover body and an upper cover body which are positioned in the filter cartridge, the middle cover body is connected between the upper end of the reverse osmosis filter element and the lower end of the scale inhibiting filter element, the upper cover body is connected between the upper end of the scale inhibiting filter element and the filter cartridge, the filter cartridge is respectively spaced from the outer side wall of the reverse osmosis filter element, the outer side wall of the middle cover body and the outer side wall of the scale inhibiting filter element to form a water inlet channel, the outer side wall of the scale inhibiting filter element forms a water inlet end of the scale inhibiting filter element, the water inlet channel is communicated between the water inlet and the water inlet end of the scale inhibiting filter element, the lower end wall of the scale inhibiting filter element forms a water outlet end of the scale inhibiting filter element, the upper end wall of the reverse osmosis filter element forms a water inlet end of the reverse osmosis filter element, and the middle cover body is provided with a second through hole communicated between the water outlet end of the scale inhibiting filter element and the water inlet end of the reverse osmosis filter element. Through the secondary filtration, can promote the quality of pure water, the filter element group spare the filter effect is better. Moreover, the scale inhibition filter element can reduce the abrasion of impurities to the reverse osmosis filter element, inhibit the scaling phenomenon of the reverse osmosis filter element, prolong the service life of the reverse osmosis filter element, reduce the replacement frequency of the reverse osmosis filter element, reduce the cost of purchasing consumables and reduce the use cost.

Illustratively, the water inlet, the pure water outlet and the wastewater outlet are located at the lower end of the filter shell, and the upper end of the filter shell is provided with a dismounting hole. Because water inlet, pure water outlet and waste water outlet are located the lower extreme of straining the shell simultaneously, can be convenient for like this with strain outside water path connection such as seat. And through setting up the dismouting hole, the user can use shaft-like instrument to insert in the dismouting hole to can be convenient for draw or rotatory filter element group spare, and then realize the purpose of light dismouting filter element group spare.

Illustratively, the dismounting hole is provided with a detachable hole plug. So set up, can avoid the dismouting hole to store up filths such as dust, filter element group spare is more sanitary safety.

According to another aspect of the utility model, still provide a purifier. The purifier includes any kind of filter element group spare as above.

A series of concepts in a simplified form are introduced in the context of the present invention, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the utility model are used as part of the utility model for understanding the utility model. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings there is shown in the drawings,

fig. 1 is a front view of a filter cartridge assembly according to an exemplary embodiment of the present invention;

FIG. 2 is a cross-sectional view of the filter cartridge assembly shown in FIG. 1 with the arrows schematically illustrating the water flow direction;

FIG. 3 is an enlarged view of a portion of the filter cartridge assembly shown in FIG. 2;

FIG. 4 is an exploded view of the filter element assembly shown in FIG. 1;

FIG. 5 is an exploded view of a portion of the components of the filter element assembly shown in FIG. 4; and

fig. 6 is a bottom view of the filter element assembly shown in fig. 1.

Wherein the figures include the following reference numerals:

100. a filter shell; 101. a water inlet; 102. a pure water outlet; 103. a waste water outlet; 104. a water inlet channel; 105. an end face; 110. a filter cartridge; 111. a barrel; 112. an end cap; 120. a lower cover body; 130. a conversion head; 131. a guide ring; 132. a stopper; 133. a waste water through hole; 140. a middle cover body; 150. an upper cover body; 160. a decorative cover; 170. disassembling and assembling the holes; 180. a hole plug; 200. a reverse osmosis filter element; 210. a water inlet end; 220. a pure water end; 230. a waste water end; 300. a central tube; 310. a first through hole; 400. a water inlet check valve; 500. a pure water check valve; 510. a blocking member; 511. a guide section; 512. a plugging section; 513. an annular groove; 600. a waste water check valve; 700. a straight pipe; 800. a scale inhibition filter element; 810. a water inlet end; 820. a water outlet end; 910. a first seal member; 920. a second seal member; 930. a third seal.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the invention is not limited to the specific details known to a person skilled in the art. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.

According to an aspect of the present invention, a filter element assembly is provided. The filter element assembly may be used to filter water. The filter element assembly can be applied to various types of water purifiers. Therefore, according to another aspect of the present invention, there is also provided a water purifier. The filter element assembly and the water purifier according to the embodiment of the present invention will be described in detail with reference to fig. 1-6. Wherein the arrows shown in fig. 2 schematically illustrate the direction of water flow within the filter cartridge assembly.

As shown in fig. 1-6, the cartridge assembly may include a cartridge housing 100 and a reverse osmosis cartridge 200.

The filter housing 100 may have a water inlet 101, a pure water outlet 102, and a waste water outlet 103. The water inlet 101 may be used for communication to a water source. The water source may supply raw water, which may enter the filter housing 100 through the water inlet 101. Water sources include, but are not limited to, municipal waterways or tanks, and the like.

The reverse osmosis cartridge 200 may be disposed within the filter housing 100. After entering the filter housing 100 through the water inlet 101, the raw water may be filtered by the reverse osmosis filter element 200 to produce pure water. Specifically, the water inlet 101 may be communicated to the water inlet end 210 of the reverse osmosis cartridge 200. After passing through the water inlet 101 and the water inlet end 210 in sequence, the raw water may be filtered by the reverse osmosis filter 200 to produce pure water. Pure water may flow out through the pure water end 220 of the reverse osmosis cartridge 200. The pure water outlet 102 may be connected to a pure water end 220 of the reverse osmosis filter cartridge 200. The pure water passes through the pure water port 220 and the pure water outlet 102 in order and then flows out of the filter element assembly. The user may access the pure water for drinking or cooking. In embodiments where the filter cartridge assembly is applied to a water purifier, pure water outlet 102 may be connected to a post-filter cartridge or other component. Wastewater produced during the process of preparing pure water by the reverse osmosis filter element 200 may flow out through the wastewater end 230 of the reverse osmosis filter element 200. The wastewater passes through the wastewater end 230 and the wastewater outlet 103 in sequence and then flows out of the filter element assembly. In embodiments where the cartridge assembly is applied to a water purifier, the waste water outlet 103 may be connected to a waste water tank or other component.

The axis of the pure water outlet 102 may coincide with the central axis of the filter housing 100. The waste water outlet 103 and the water inlet 101 may have a ring shape concentrically arranged with the pure water outlet 102. That is, the waste water outlet 103 and the water inlet 101 may be respectively formed in a ring shape and concentrically arranged. The waste water outlet 103 and the water inlet 101 may surround the pure water outlet 102, respectively.

A water inlet check valve 400 may be provided in the filter housing 100. The water inlet check valve 400 may be connected with the water inlet 101. The inlet check valve 400 may be any of a variety of types known in the art or that may occur in the future. When the filter element assembly is used for preparing pure water, raw water with certain water pressure can enable the water inlet check valve 400 to be communicated. Thus, the raw water can be smoothly filtered through the reverse osmosis filter element 200. The user can remove the filter element assembly when it needs to be replaced. At this time, the water remaining in the cartridge assembly cannot flow out of the water inlet 101 through the water inlet check valve 400. Therefore, the waste of water resources can be reduced, and the use cost of a user is reduced. Moreover, the problem that the inside of a user and a water purifier or the ground of a scene where the water purifier is installed and the like are splashed can be reduced, so that the workload of cleaning the user can be reduced, the replacement safety is improved, and the user experience is better. The filter element component can be selectively aligned with an external waterway so as to be installed to an external component such as a filter base in an in-line installation mode. Furthermore, since the axis of pure water outlet 102 coincides with the central axis of filter housing 100, waste water outlet 103 and water inlet 101 may be in the form of a ring concentric with pure water outlet 102, and the filter cartridge assembly may be mounted to an external component such as a filter base by a rotary mounting method without worrying about the rotation angle deviation and the failure of communication with an external water path. Therefore, the filter element component has stronger applicability and wider application range.

Illustratively, water inlet 101, pure water outlet 102, and waste water outlet 103 may be disposed at any suitable location on filter housing 100. In the embodiment shown in the drawings, a water inlet 101, a pure water outlet 102, and a waste water outlet 103 may be located at the lower end of the filter housing 100. The directional terms used herein are all relative to the cartridge assembly in the arrangement shown in fig. 1-2, i.e., the water inlet 101, pure water outlet 102 and waste water outlet 103 are located at one end as the lower end and the opposite end as the upper end. The upper end of the filter housing 100 may be provided with a mounting and dismounting hole 170. In the embodiment shown in the drawings, the removal and installation hole 170 may penetrate the filter case 100 in a radial direction of the filter case 100. In other embodiments not shown in the figures, the access hole 170 may not extend through the filter housing 100 and/or the access hole 170 may extend in other directions.

Since the water inlet 101, the pure water outlet 102 and the waste water outlet 103 are simultaneously located at the lower end of the filter housing 100, it is possible to facilitate connection with an external water path such as a filter base. And through setting up dismouting hole 170, the user can use shaft-like instrument to insert in dismouting hole 170 to can be convenient for draw or rotatory filter element group spare, and then realize the purpose of light dismouting filter element group spare.

Illustratively, the filter element assembly may also include an aperture plug 180. The plug 180 may be removably connected to the removal aperture 170 by any suitable means, such as by threading or plugging. In the embodiment of the figures, the hole plugs 180 may include two. The two hole plugs 180 may be respectively connected to both ends of the disassembly and assembly hole 170. When it is desired to disassemble the cartridge assembly, the plug 180 can be removed from the removal aperture 170. When the plug 180 is coupled to the mounting/dismounting hole 170, the plug 180 may block the mounting/dismounting hole 170. Therefore, the filter element assembly can avoid dirt such as dust accumulated in the dismounting holes 170, and is more sanitary and safer.

Illustratively, a waste water check valve 600 and a pure water check valve 500 may be further disposed in the filter housing 100. The waste water check valve 600 and the pure water check valve 500 may employ various types of check valves known in the art or may be developed in the future. The waste water check valve 600 may be connected to the waste water outlet 103. A pure water check valve 500 may be provided in the pure water outlet 102.

When the filter element assembly is used for preparing pure water, the pure water with certain water pressure can enable the pure water check valve 500 to be conducted. Thus, pure water can smoothly flow out through the pure water outlet 102. Meanwhile, the waste water having a certain water pressure may turn on the waste water check valve 600. Thus, the waste water can smoothly flow out through the waste water outlet 103. The user can remove the filter element assembly when it needs to be replaced. At this time, the pure water and the wastewater remaining in the filter element assembly cannot pass through the pure water check valve 500 and the wastewater check valve 600 due to too low water pressure, and cannot flow out through the pure water outlet 102 and the wastewater outlet 103. Therefore, the waste of water resources can be further reduced, and the use cost of a user is further reduced. Moreover, the problem that the user, the inside of the water purifier or the ground of a scene where the water purifier is installed and the like are splashed can be further reduced, so that the workload of cleaning the user can be reduced, the replacement safety is improved, and the user experience is better.

Illustratively, pure water outlet 102 may expose pure water check valve 500. So set up, be convenient for watch the state of pure water check valve 500 to can in time maintain or change pure water check valve 500.

Illustratively, the pure water outlet 102 may extend outward from the end face 105 of the filter case 100. Both the waste water outlet 103 and the water inlet 101 may be provided on the end face 105. When installation filter element group spare, pure water outlet 102 can peg graft earlier to filter on external parts such as seat, therefore pure water outlet 102 can play predetermined position's effect to be convenient for the installation.

Illustratively, filter housing 100 may include a filter cartridge 110, a lower cap body 120, and a conversion head 130. The filter cartridge 110 may be integrally formed by molding or the like. In the embodiment shown in the figures, filter cartridge 110 may include a barrel 111 and an end cap 112. The end cap 112 may be connected to the barrel 111 by any suitable means, such as a threaded connection or a connector connection. The cylinder 111 and the end cap 112 may surround to form a receiving space to receive the reverse osmosis filter cartridge 200.

Lower cap body 120 and transition head 130 may be at least partially positioned within filter cartridge 110. The lower cover 120 may be coupled to the lower end of the reverse osmosis cartridge 200. In a radial direction of the filter case 100, the lower cover body 120 may be positioned between the filter cartridge 110 and the conversion head 130. Lower cover 120 and filter cartridge 110 are at least partially spaced apart to form water inlet 101. Lower cap 120 and switching head 130 are at least partially spaced apart to form waste outlet 103. Pure water outlet 102 may be formed in switching head 130. So set up, through split type three part, can make the manufacturing of filter element group spare simpler.

Illustratively, the filter housing 100 may also include a decorative cover 160. The decorative cover 160 may be attached to the top of the exterior of the filter cartridge 110. The decorative cover 160 may serve as a decoration to make the filter housing 100 more aesthetically pleasing.

Illustratively, the filter cartridge assembly may also include a base pipe 300. The center tube 300 may be plugged into the reverse osmosis cartridge 200. The inner side wall of the reverse osmosis cartridge 200 may form a plain water end 220. A first through hole 310 may be provided on a sidewall of the center tube 300. The number of first through holes 310 may be arbitrary. The first through hole 310 may communicate between the pure water end 220 and the pure water outlet 102. The filter cartridge assembly, when preparing pure water, the pure water may sequentially pass through the pure water terminal 220, the first through-hole 310, and the inner space of the central tube 300, thereby flowing out through the pure water outlet 102. The center tube 300 may be used to support the reverse osmosis cartridge 200 so that the reverse osmosis cartridge 200 may be prevented from being deformed by a long-term action of water pressure.

Illustratively, the filter cartridge assembly may also include a straight-through tube 700. Both ends of the straight pipe 700 may be inserted into the pure water outlet 102 and the center pipe 300, respectively. Through pipe 700 may allow pure water outlet 102 and center pipe 300 to be connected in alignment to allow a clear water path. Illustratively, both ends of the through pipe 700 may be provided with a first sealing member 910 and a second sealing member 920, respectively. The first seal 910 may be clamped between the straight-through tube 700 and the center tube 300. A second seal 920 may be sandwiched between the straight tube 700 and the conversion head 130. The first and

second sealing members

910 and 920 may provide better sealability to prevent the water channeling phenomenon. The first and

second seals

910, 920 include, but are not limited to, a seal ring or a seal gasket, etc.

Illustratively, a guide ring 131 may be provided inside pure water outlet 102. The guide ring 131 may be connected to an inner sidewall of the conversion head 130. The pure water check valve 500 may include a packing member 510 and an elastic member (not shown). The block piece 510 may comprise a guide section 511 and a block section 512. The guide section 511 may penetrate the guide ring 131. The plugging section 512 may be connected to the guiding section 511. Pure water outlet 102 may expose blocking section 512. The block piece 510 may be movable between an off position and an on position. When the block piece 510 is in the off position, the block section 512 may block the pure water outlet 102. When the block piece 510 is in the conducting position, the block section 512 may be spaced apart from the pure water outlet 102, thereby conducting the pure water outlet 102. The elastic element can exert an elastic force on the blocking section 512 toward the blocking position.

When the cartridge assembly is mounted to an external component such as a filter base, the external component may be pressed against the plugging section 512 through the pure water outlet 102 to move the plugging member 510 inwardly to the conducting position. Thus, pure water outlet 102 is opened. At this time, the elastic member may be stretched or compressed, thereby having a strong elastic potential. When the filter element assembly is removed, the outer member does not abut the plugging section 512. At this time, the elastic member may release elastic potential energy, so that an elastic force toward the blocking section 512 may be applied. Thus, the block piece 510 can be moved outward to the off position, and the pure water outlet 102 is blocked. The guide section 511 can move within the guide ring 131 during the movement of the block piece 510 between the off position and the on position, thereby having a good guiding effect. The pure water check valve 500 has a simple structure and a low manufacturing cost.

Illustratively, a stopper 132 may be provided on the pure water outlet 102. The limiting member 132 may be connected to an inner sidewall of the conversion head 130. When the blocking piece 510 is in the stop position, the blocking segment 512 may abut against the limiting piece 132. With this arrangement, the block piece 510 can be prevented from slipping off from the pure water outlet 102, thereby ensuring stable performance of the pure water check valve 500.

Illustratively, a third seal 930 may be disposed on the blocking section 512. The third seal 930 may be clamped between the block section 512 and the stop 132 when the block piece 510 is in the stop position. The third sealing member 930 may provide better sealability to prevent the occurrence of a water breakthrough phenomenon. The third sealing member 930 includes, but is not limited to, a sealing ring or a sealing gasket, etc. Illustratively, an annular groove 513 may be provided on the plugging section 512. A third seal 930 may be secured to the annular groove 513. In this way, the third sealing member 930 is not easily removed from an intended position, thereby ensuring a better sealing effect.

Illustratively, waste water through hole 133 may be further provided on the conversion head 130. The waste water through hole 133 may be communicated to the waste water outlet 103. A waste water check valve 600 may be connected to the waste water through hole 133. So set up, the waste water check valve 600 fixed connection of being convenient for.

Illustratively, the filter cartridge assembly may also include a scale inhibiting filter element 800. The filter case 100 may include a middle cap body 140 and an upper cap body 150. Middle cap body 140 and upper cap body 150 may be located within filter cartridge 110. The middle cover body 140 may be connected between the upper end of the reverse osmosis filter element 200 and the lower end of the scale inhibition filter element 800. The upper cover 150 may be connected between the upper end of the scale inhibiting filter element 800 and the filter cartridge 110. The filter cartridge 110 may be spaced apart from the outer side wall of the reverse osmosis filter element 200, the outer side wall of the middle cover 140, and the outer side wall of the scale inhibition filter element 800, respectively, to form the water inlet passage 104. The outer sidewall of the scale inhibiting filter element 800 may form a water inlet 810 of the scale inhibiting filter element 800. The water inlet channel 104 can be communicated between the water inlet 101 and the water inlet end 810 of the scale inhibiting filter element 800. The lower end wall of the scale inhibiting filter element 800 may form the water outlet end 820 of the scale inhibiting filter element 800. The upper end wall of the reverse osmosis cartridge 200 may form the water inlet end 210 of the reverse osmosis cartridge 200. The middle cap body 140 may have a second through hole (not shown) thereon. The second through hole may communicate between the water outlet end 820 of the scale inhibition filter element 800 and the water inlet end 210 of the reverse osmosis filter element 200.

In practical application, raw water may sequentially enter the scale inhibiting filter element 800 through the water inlet 101, the water inlet channel 104 and the water inlet end 810 for filtration. The water filtered by the scale inhibition filter element 800 can sequentially pass through the water outlet end 820, the second through hole and the water inlet end 210 to enter the reverse osmosis filtration filter element 200 for secondary filtration. Through the second grade filtration, can promote the quality of pure water, the filter element group spare's filter effect is better. Moreover, the scale inhibition filter element 800 can reduce the abrasion of impurities to the reverse osmosis filter element 200, inhibit the scale formation phenomenon of the reverse osmosis filter element 200, prolong the service life of the reverse osmosis filter element 200, reduce the replacement frequency of the reverse osmosis filter element 200, reduce the cost of purchasing consumables and reduce the use cost.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

For convenience of description, relative terms of regions such as "over 8230; \8230" "," ' over 8230; "\8230;", "' over 8230;", \8230;, "' over 8230" "," "over surface", "over", etc. may be used herein to describe the regional positional relationship of one or more components or features to other components or features as illustrated in the figures. It is to be understood that the relative terms of the regions are intended to encompass not only the orientation of the element as depicted in the figures, but also different orientations in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A filter element assembly, comprising:

the filter shell is provided with a water inlet, a pure water outlet and a wastewater outlet, the axis of the pure water outlet is coincident with the central axis of the filter shell, and the wastewater outlet and the water inlet are in a ring shape which is concentric with the pure water outlet; and

the reverse osmosis filter element is arranged in the filter shell, the water inlet is communicated with the water inlet end of the reverse osmosis filter element, the pure water outlet is communicated with the pure water end of the reverse osmosis filter element, the wastewater outlet is communicated with the wastewater end of the reverse osmosis filter element,

wherein, be provided with in the filter shell with water inlet check valve that the water inlet is connected.

2. The filter element assembly of claim 1, further comprising a waste water check valve disposed within the filter housing and connected to the waste water outlet, wherein the pure water outlet is disposed within the pure water check valve.

3. The filter element assembly according to claim 2,

the pure water outlet exposes the pure water check valve; and/or

The pure water outlet extends outwards from the end face of the filter shell, and the waste water outlet and the water inlet are both arranged on the end face.

4. The filter element assembly of claim 2, wherein the filter housing comprises a filter cartridge, a lower cover, and a conversion head, the lower cover being attached to a lower end of the reverse osmosis filter element, the lower cover being positioned between the filter cartridge and the conversion head, the lower cover and the filter cartridge being at least partially spaced apart to form the water inlet, the lower cover and the conversion head being at least partially spaced apart to form the wastewater outlet, the conversion head forming the pure water outlet.

5. The filter element assembly according to claim 4, further comprising a central tube inserted into the reverse osmosis filter element, wherein the inner side wall of the reverse osmosis filter element forms the pure water end, and a first through hole communicated between the pure water end and the pure water outlet is formed in the side wall of the central tube.

6. The filter element assembly according to claim 5, further comprising a through pipe having both ends respectively inserted into the pure water outlet and the central pipe.

7. The filter element assembly according to claim 4, wherein a guide ring connected to an inner side wall of the conversion head is provided in the pure water outlet, the pure water check valve comprises a blocking member and an elastic member, the blocking member comprises a guide section penetrating through the guide ring and a blocking section connected to the guide section, the pure water outlet exposes the blocking section, the blocking member is movable between a blocking position where the blocking section blocks the pure water outlet and a conducting position where the blocking section is spaced apart from the pure water outlet, and the elastic member abuts against between an end wall of the guide ring and the blocking section for applying an elastic force to the blocking section toward the blocking position.

8. The filter element assembly according to claim 7, wherein a stop member connected to an inner sidewall of said conversion head is further provided in said pure water outlet, said plugging section abutting against said stop member when said plugging member is in said off position.

9. The filter element assembly according to claim 4, wherein said transition head is further provided with a waste water through hole, said waste water through hole being connected to said waste water outlet, said waste water check valve being connected to said waste water through hole.

10. The filter element assembly of claim 4, further comprising a scale inhibiting filter element, wherein the filter housing further comprises a middle cover body and an upper cover body which are positioned in the filter cartridge, the middle cover body is connected between the upper end of the reverse osmosis filter element and the lower end of the scale inhibiting filter element, the upper cover body is connected between the upper end of the scale inhibiting filter element and the filter cartridge, the filter cartridge is respectively spaced from the outer side wall of the reverse osmosis filter element, the outer side wall of the middle cover body and the outer side wall of the scale inhibiting filter element to form a water inlet channel, the outer side wall of the scale inhibiting filter element forms a water inlet end of the scale inhibiting filter element, the water inlet channel is communicated between the water inlet and the water inlet end of the scale inhibiting filter element, the lower end wall of the scale inhibiting filter element forms a water outlet end of the scale inhibiting filter element, the upper end wall of the reverse osmosis filter element forms a water inlet end of the reverse osmosis filter element, and the middle cover body is provided with a second through hole communicated between the water outlet end of the reverse osmosis filter element and the water inlet end of the scale inhibiting filter element.

11. The filter element assembly according to claim 1, wherein said water inlet, said pure water outlet and said waste water outlet are located at a lower end of said filter housing, and said filter housing is provided at an upper end thereof with a removal hole.

12. The filter element assembly according to claim 11, wherein said removal aperture is provided with a removable plug.

13. A water purification machine comprising a filter element assembly according to any one of claims 1 to 12.