CN214360580U

CN214360580U - Double front-mounted single rear-mounted composite filter element

Info

Publication number: CN214360580U
Application number: CN202023064217.9U
Authority: CN
Inventors: 周栋; 张涛; 龚圆杰; 何海; 范婷; 赵保文
Original assignee: Chunmi Technology Shanghai Co Ltd
Current assignee: Chunmi Technology Shanghai Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-10-08
Anticipated expiration: 2030-12-18

Abstract

The present disclosure relates to a double front-mounted single rear-mounted composite filter element. This two leading single rearmounted composite filter cores, including composite filter casing, first leading filter element group spare, the leading filter element group spare of second, water drive tank subassembly and rearmounted filter element group spare. Among the technical scheme of this disclosure, through driving a jar structure with water, two leading filter cores and a rearmounted filter core integration together and form two leading single rearmounted composite filter cores, set up the problem that water drives a jar increase volume alone when having solved water purifier pure water bubble membrane and water demand, reduced the whole volume of water purifier, and then reduced the occupation space of water purifier in the basin cabinet, be favorable to the installation of other household electrical appliances in the basin cabinet, user experience preferred.

Description

Double front-mounted single rear-mounted composite filter element

Technical Field

The utility model relates to a water purification technology field especially relates to a two leading single rearmounted composite filter cores.

Background

In order to improve the quality of drinking water, more and more households are equipped with water purifiers through which tap water or water directly supplied from a water source is treated into purified water for use.

In the related art, if the water purifier is not used for a long time, particles in front of an RO (Reverse Osmosis) membrane in an RO (Reverse Osmosis) filter element permeate to a pure water end through the RO membrane, so that the TDS (Total dissolved solids) of the first cup of water is high, and the user experience is influenced.

In order to solve the problems, the water tank or the water drive tank can be independently arranged in the water purifier to realize the pure water bubble film technology, but the independent water tank or the water drive tank can occupy the inner space of the water purifier, so that the whole volume of the water purifier is large, and the installation of other household appliances in the water tank cabinet is influenced.

SUMMERY OF THE UTILITY MODEL

To overcome the problems in the related art, the embodiments of the present disclosure provide a dual front-mounted single rear-mounted composite filter element. The technical scheme is as follows:

according to the embodiment of this disclosure, provide a two leading single rearmounted composite filter cores, include:

the composite filter element shell is provided with a water source water inlet, a purified water outlet and a purified water inlet and outlet which are connected with an external water source;

the first preposed filter element component comprises a preposed filter element fixing part and a first preposed filter element; the front filter element fixing part comprises a first front upper end cover, a front lower end cover and a flow guide shell; the first front upper end cover is a hollow cover plate and is fixedly connected with the composite filter element shell, the front lower end cover is a plate-shaped cover plate, the flow guide shell is a cylindrical shell with a hollow interior, the flow guide shell is fixedly connected with the first front upper end cover and the front lower end cover respectively, and the hollow interior of the flow guide shell is communicated with the hollow interior of the first front upper end cover; the first preposed filter element is a hollow cylinder, is sleeved on the outer side of the guide shell and is fixedly connected with the first preposed upper end cover and the front lower end cover respectively; the water source cavity formed by the first preposed filter element component and the composite filter element shell is communicated with the water source water inlet;

the second preposed filter element assembly is arranged in the inner hollow area of the guide shell and comprises a second preposed upper end cover and a second preposed filter element; the second preposed upper end cover is a hollow cover plate, the edge of the second preposed upper end cover is fixedly connected with the flow guide shell, the second preposed filter element is a hollow cylinder, the second preposed filter element is fixed between the second preposed upper end cover and the front lower end cover, and the interior of the second preposed filter element is hollow and communicated with the hollow part of the second preposed upper end cover; a front cavity is formed between the second front filter element and the guide shell, and at least one water through hole is formed in the guide shell forming the front cavity;

the water-drive tank assembly is arranged in an inner cavity formed by the diversion shell and the second front upper end cover and comprises a water-drive tank end cover and a water-drive tank water bag fixedly connected with the water-drive tank end cover, and the water-drive tank water bag is communicated with the pure water inlet and outlet; the end cover of the water drive tank is fixedly connected with the composite filter element shell, and a water purification cavity between the water drive tank assembly and the first preposed filter element assembly and the second preposed filter element assembly is communicated with the purified water outlet;

the rear filter element component comprises a rear filter element fixing part and a rear filter element; the rear filter element fixing part is matched with the water drive tank assembly and comprises a rear upper end cover and a rear lower end cover, the rear upper end cover is a hollow cover plate and is fixedly connected with the composite filter element shell, and the rear lower end cover is a plate-shaped cover plate; the rear filter element is a hollow cylinder, is fixed between the rear upper end cover and the rear lower end cover and is used for post-filtering the pure water stored in the water-drive water tank bag; the hollow area of the rear filter element is communicated with the pure water inlet and the pure water outlet through the hollow area of the rear upper end cover.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: through driving a jar structure, two leading filter cores and a rearmounted filter core integration with water and forming two leading single rearmounted composite filter core together, set up the problem that water drive a jar increase volume alone when having solved water purifier pure water bubble membrane and water demand, reduced the whole volume of water purifier, and then reduced the occupation space of water purifier in the basin cabinet, be favorable to the installation of other household electrical appliances in the basin cabinet, user experience preferred.

In one embodiment, the pure water inlet and outlet comprises an interface, the interface is arranged corresponding to the hollow area of the rear upper end cover and is used for filling pure water into the water drive tank water bag and extracting pure water stored in the water drive tank water bag;

the water-drive tank water bag is communicated with the interface through the rear filter element, the hollow area of the rear filter element and the hollow area of the rear upper end cover.

In one embodiment, the pure water inlet and outlet comprises two interfaces for filling pure water into the water-drive tank water bag and extracting pure water stored in the water-drive tank water bag respectively;

correspondingly, the water-driving tank water bag is communicated with one of the two connectors through a first pure water cavity formed by the rear filter element assembly and the water-driving tank assembly, and the water-driving tank water bag is communicated with the other connector through the rear filter element, a hollow area of the rear filter element and a hollow area of the rear upper end cover.

In one embodiment, the pure water inlet and outlet comprises two interfaces for filling pure water into the water-drive tank water bag and extracting pure water stored in the water-drive tank water bag respectively; the rear filter element fixing part also comprises a central pipeline;

the central pipeline is arranged in the hollow area of the rear filter element, the upper end of the central pipeline is connected with the rear upper end cover, the central pipeline is communicated with one of the two connectors through the hollow area of the rear upper end cover, and the lower end of the central pipeline penetrates through the rear lower end cover to be communicated with the water bag of the water drive tank;

the water-drive tank water bag is communicated with the other connector of the two connectors through the rear filter element and a second pure water cavity formed by the rear filter element and the central pipeline.

In one embodiment, the pure water inlet and outlet, the water source inlet and the pure water outlet are located at one end of the composite filter element shell close to the first front upper end cover.

In one embodiment, the water source inlet is located at one end of the composite filter element shell close to the front lower end cover, and the purified water outlet and the purified water inlet and outlet are located at one end of the composite filter element shell close to the first front upper end cover.

In one embodiment, the pure water inlet and outlet is located at one end of the composite filter element shell close to the first front upper end cover, the water source inlet and the pure water outlet are located at one end of the composite filter element shell close to the front lower end cover, and the front lower end cover is provided with an opening which is communicated with the pure water outlet.

In one embodiment, the water-drive can end comprises a sidewall and a floor, the floor covering an open end of the water-drive can water bag;

the post-filter element assembly is arranged in a post-cavity formed by the side wall of the water-drive tank end cover and the bottom plate; the water-drive tank water bag is fixedly connected with the bottom plate and is communicated with the post-filter element assembly through a through hole formed in the bottom plate.

In one embodiment, the flow guide shell is provided with a first stop corresponding to the bottom plate of the water drive can end for defining a minimum distance between the water drive can end and the second pre-filter element assembly.

In one embodiment, the side wall of the water drive can end is provided with a second stop corresponding to the lower rear end for defining a minimum distance between the lower rear end and the bottom plate of the water drive can end.

In one embodiment, the post-filter cartridge assembly is disposed in the water drive tank water bag.

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

Drawings

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

FIG. 1 is a block diagram illustrating a dual front single rear composite filter element according to one exemplary embodiment.

Fig. 2 is a block diagram illustrating a dual front single rear composite filter element according to an exemplary embodiment.

Fig. 3 is a block diagram illustrating a dual front single rear composite filter element according to an exemplary embodiment.

Fig. 4 is a block diagram illustrating a dual front single rear composite filter element according to an exemplary embodiment.

Fig. 5 is a block diagram illustrating a dual front single rear composite filter element according to an exemplary embodiment.

Fig. 6 is a block diagram illustrating a dual front single rear composite filter element according to an exemplary embodiment.

Fig. 7 is a block diagram illustrating a dual front single rear composite filter element according to an exemplary embodiment.

Fig. 8 is a block diagram illustrating a dual front single rear composite filter element according to an exemplary embodiment.

Fig. 9 is a block diagram illustrating a dual front single rear composite filter element according to an exemplary embodiment.

Detailed Description

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

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

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment of the disclosure provides a double-preposition single-postposition composite filter element, which comprises a composite filter element shell 20, a first preposition filter element component, a second preposition filter element component, a water drive tank component and a postposition filter element component.

As shown in fig. 1, the composite filter element housing 20 is provided with a water inlet 201 for connecting an external water source, a purified water outlet 202 and a purified water inlet and outlet 203. The water inlet 201 may be connected to an external water source to provide raw water, which may be river water, well water, or municipal tap water, and the embodiment of the present disclosure does not limit the raw water. This water purification delivery port 202 is the delivery port of the water purification after the first leading filter element group spare and the leading filter element group spare of second of this two leading single rearmounted composite filter element purify. The pure water inlet/outlet 203 is used for filling pure water into the water-drive water-filled tank 502 shown in fig. 1 or extracting pure water stored in the water-drive water-filled tank 502. Specifically, the pure water inlet/outlet 203 may include an interface, i.e., the two functions of filling pure water and extracting pure water are completed through the interface; or the pure water inlet and outlet 203 can also comprise two interfaces, namely, the two interfaces can respectively complete the functions of filling pure water and extracting pure water.

Referring to fig. 1, the first pre-filter cartridge assembly includes a pre-filter cartridge retainer portion and a first pre-filter cartridge 302; the front filter element fixing part comprises a first front upper end cover 3011, a front lower end cover 3012 and a flow guide shell 3013; the first front upper end cover 3011 is a hollow cover plate and is fixedly connected to the composite filter element housing 20, the front lower end cover 3012 is a plate-shaped cover plate, the diversion shell 3013 is a cylindrical housing with a hollow interior, the diversion shell 3013 is fixedly connected to the first front upper end cover 3011 and the front lower end cover 3012, and the diversion shell 3013 is hollow and communicates with the hollow interior of the first front upper end cover 3011; the first front filter element 302 is a hollow cylinder, sleeved outside the flow guide shell 3013, and fixedly connected to the first front upper end cover 3011 and the front lower end cover 3012, respectively; the water source cavity 10a formed by the first pre-filter element assembly and the composite filter element shell 20 is communicated with the water source inlet 201.

Referring to fig. 1, the second pre-filter cartridge assembly is disposed in the hollow interior region of the baffle casing 3013 and includes a second pre-cap 401 and a second pre-filter cartridge 402; the second front upper end cover 401 is a hollow cover plate, the edge of the second front upper end cover 401 is fixedly connected with the flow guide shell 3013, the second front filter element 402 is a hollow cylinder, the second front filter element 402 is fixed between the second front upper end cover 401 and the front lower end cover 3012, and the interior of the second front filter element 402 is hollow and communicated with the hollow of the second front upper end cover 401; a front cavity 10b is formed between the second front filter element 402 and the flow guide casing 3013, and at least one water through hole 3013a is disposed on the flow guide casing 3013 forming the front cavity 10 b.

Specifically, the area of the first front filter element 302 exposed in the water source cavity 10a is a water inlet of the first front filter element 302, and at least one water through hole 3013a provided on the baffle casing 3013 is a water outlet of the first front filter element 302. The exposed area of the second front filter element 402 in the front cavity 10b is the water inlet of the second front filter element 402, and the hollow area of the second front filter element 402 is the water outlet of the second front filter element 402.

It should be noted that the first pre-filter element 302 may include at least one filter material selected from PP (polypropylene) cotton, PP folded paper, and non-woven fabric, and the second pre-filter element 402 may include activated carbon, or may further include at least one filter material selected from PP cotton, PP folded paper, and non-woven fabric. The PP cotton can also be called filling cotton, is common artificial chemical fiber and is made of polypropylene fiber for artificial chemical fiber. This leading filter core 302 of first is specifically used for filtering the large granule material such as colloidal impurity in the former aquatic, little mud, rust or worm's ovum, and leading filter core 402 of second specifically is used for adsorbing organic pollutant and chlorine residue in the former aquatic, or can also filter the large granule material in the former aquatic again. In practical applications, the filter materials of the first front filter element 302 and the second front filter element 402 may be arranged in a crossed manner, which is not limited in the embodiment of the disclosure. This leading filter core 302 of first and the leading filter core 402 of second are mainly for subsequent reverse osmosis filter core is the preliminary treatment, filters large particulate matter and harmful substance, prevents to cause the damage to devices such as reverse osmosis filter core on the follow-up water route, the life-span of extension water purifier.

Referring to fig. 1, the water-drive tank assembly is disposed in the inner cavity formed by the baffle 3013 and the second front upper end cover 401, and includes a water-drive tank end 501 and a water-drive tank water bag 502 fixedly connected to the water-drive tank end 501, wherein the water-drive tank water bag 502 is communicated with the pure water inlet/outlet 203; the end cap 501 is fixedly connected to the composite filter element housing 20, and the water purification cavity 10c between the water drive tank assembly and the first pre-filter element assembly and the second pre-filter element assembly is communicated with the purified water outlet 202. Specifically, the water drive can end 501 may be secured to the composite cartridge housing 20; alternatively, the water drive can end 501 may be secured to the first front upper end 3011, and the first front upper end 3011 secured to the composite cartridge housing 20; alternatively, the water drive can end 501 may be secured to the baffle 3013, the baffle 3013 secured to the composite cartridge housing 20, and so on.

Referring to fig. 1, the rear filter cartridge assembly includes a rear filter cartridge fixing portion 601 and a rear filter cartridge 602; the rear filter element fixing part 601 is matched with the water drive tank assembly and comprises a rear upper end cover 6011 and a rear lower end cover 6012, the rear upper end cover 6011 is a hollow cover plate and is fixedly connected with the composite filter element shell 20, and the rear lower end cover 6012 is a plate-shaped cover plate; the rear filter element 602 is a hollow cylinder, and is fixed between the rear upper end cover 6011 and the rear lower end cover 6012, and is configured to perform rear filtering on pure water stored in the water-drive tank water bag 502; the hollow area of the rear filter element 602 is communicated with the pure water inlet and outlet 203 through the hollow area of the rear upper end cover 6011. The post-filter 602 may include filter materials for post-treatment of pure water, such as activated carbon, ultrafiltration membranes, and nonwoven fabrics.

Illustratively, referring to FIG. 1, a water-drive can end 501 for a water-drive can assembly may include a side wall 5011 and a base 5012, the base 5012 being provided with at least one through hole 5012a, and the open end of the water-drive can water bag 502 being secured to the base 5012 such that the base 5012 covers the open end of the water-drive can water bag 502. At this time, the side wall 5011 and the bottom plate 5012 of the water-drive tank end cover 501 form a rear cavity, and the rear filter element assembly can be arranged in the rear cavity, so that the rear filter element assembly is fixed and accommodated. Meanwhile, the water-driving tank water bag 502 can be communicated with the rear filter element assembly through at least one through hole 5012a formed in the bottom plate 5012.

The flow direction of the water path of the dual preposed single postposition composite filter element is explained by taking the figure 1 as an example, the dual preposed single postposition composite filter element is generally arranged behind the water inlet port of the external water source of the whole water purifier, namely, the water inlet port of the external water source is connected with the water inlet 201 of the composite filter element shell 20, raw water of the external water source may enter the water source cavity 10a from the water source inlet 201, enters the first pre-filter element 302 through the water inlet of the first pre-filter element 302, enters the pre-cavity 10b through the water through hole 3013a after being purified by the first pre-filter element 302, then enters the second pre-filter 402 through the water inlet of the second pre-filter 402, and the purified water passing through the second pre-filter 402 flows out of the hollow area of the second pre-filter 402 and enters the water purification cavity 10c formed by the water drive tank assembly, the first pre-filter assembly and the second pre-filter assembly. Because the pure water cavity 10c is communicated with the pure water outlet 202, the pure water flowing into the pure water cavity 10c can flow out from the pure water outlet 202, so as to be conveyed to the reverse osmosis filter element for further filtration treatment through a corresponding pipeline.

Pure water obtained by filtration of the reverse osmosis filter element can enter the double-prepositive single-postposition composite filter element through the pure water inlet and outlet 203 again, and the pure water inlet and outlet 203 in fig. 1 including the two

connectors

2031 and 2032 is taken as an example for explanation. Assuming that the connector 2031 is a pure water inlet through which pure water can be filled into the water-drive tank water bag 502, and the connector 2032 is a water outlet through which pure water stored in the water-drive tank water bag 502 can be pumped out through the connector 2032, pure water filtered by the reverse osmosis cartridge can enter the first pure water cavity 10d formed by the post-filter cartridge assembly and the water-drive tank assembly through the connector 2031, and then pure water in the first pure water cavity 10d can flow into the water-drive tank water bag 502 through the through hole 5012a provided in the bottom plate 5012 of the water-drive tank end cap 501 for storage.

When a user takes water or needs a pure water bubble membrane, pure water stored in the water-driving tank water bag 502 can be pumped through the interface 2032, at this time, the pure water stored in the water-driving tank water bag 502 can enter the first pure water cavity 10d again through the through hole 5012a, then enters the post-filter 602 from the area of the post-filter 602 exposed in the first pure water cavity 10d, enters the hollow area of the post-filter 602 after being filtered by the post-filter 602, and then is discharged into a subsequent water path from the interface 2032 communicated with the hollow area.

In practical applications, the connection 2031 may also be a water outlet, and the connection 2032 may be a water inlet, so that pure water filtered by the reverse osmosis filter element can enter the hollow area of the rear filter element 602 through the connection 2032, then enter the rear filter element 602 from the area of the rear filter element 602 exposed in the hollow area, and enter the first pure water cavity 10d after being filtered by the rear filter element 602, and then flow into the water-driving tank water bag through the through hole 5012a provided on the bottom plate 5012 of the water-driving tank end cap 501 for storage.

When a user takes water or needs a pure water bubble film, the pure water stored in the water-driving water tank 502 can be pumped through the interface 2031, and at this time, the pure water stored in the water-driving water tank 502 can enter the first pure water cavity 10d through the through hole 5012a again and then be discharged into a subsequent water path from the interface 2031 communicated with the first pure water cavity 10 d.

It should be noted that the purified water in the purified water cavity 10c can adjust the amount of the purified water stored in the water-driving tank 502. When the pressure of the pure water in the water-drive water tank 502 is greater than the pressure of the pure water in the pure water cavity 10c, it indicates that the water-drive water tank 502 needs to store more pure water, and at this time, the water-drive water tank 502 presses the pure water in the pure water cavity 10c, so that the pure water cavity is discharged from the pure water in the pure water cavity 10c, and the pure water amount in the water-drive water tank 502 is increased, specifically, the water-drive water tank 502 may be an elastic water tank; when the pressure of the pure water in the water-drive water-in-tank bag 502 is lower than the pressure of the pure water in the pure water cavity 10c, it indicates that the water-drive water-in-tank bag 502 needs to discharge the pure water, and the volume of the pure water in the pure water cavity 10c is increased to squeeze the water-drive water-in-tank bag 502, so that the pure water in the water-drive water-in-tank bag 502 is discharged.

Optionally, referring to fig. 1, the diversion shell 3013 is provided with a first stop 3013b corresponding to the bottom plate 5012 of the water-drive can end 501, and the first stop 3013b is used to limit the minimum distance between the water-drive can end 501 and the second pre-filter assembly, so as to avoid the water-drive can water bag 502 being squeezed due to the water stored in the water-drive can end 501 moving toward the second pre-filter assembly.

Optionally, the side wall 5011 of the water-drive tank end 501 is provided with a second limiting element corresponding to the rear lower end 6012, and the second limiting element is used to limit the minimum distance between the rear lower end 6012 and the bottom plate 5012 of the water-drive tank end 501, so as to avoid a situation that the through hole 5012a of the bottom plate 5012 is blocked due to a too small distance between the rear lower end 6012 and the bottom plate 5012 of the water-drive tank end 501, and further avoid an influence on storage and discharge of pure water in the water-drive tank water bag 502.

In one embodiment, the pure water inlet/outlet 203 may also include only one port, as shown in fig. 2, pure water filtered by the reverse osmosis filter element may enter the hollow region of the rear filter element 602 through the port 203, then enter the rear filter element 602 from the region of the rear filter element 602 exposed to the hollow region, and after filtering by the rear filter element 602, enter the first pure water cavity 10d, and then flow into the water-drive tank water bag through the through hole 5012a provided in the bottom plate 5012 of the water-drive tank end cap 501 for storage.

When a user takes water or needs a pure water bubble membrane, the pure water stored in the water-driving tank water bag 502 can be pumped through the interface 203, at this time, the pure water stored in the water-driving tank water bag 502 can enter the first pure water cavity 10d again through the through hole 5012a, then enter the post-filter 602 from the region of the post-filter 602 exposed in the first pure water cavity 10d, enter the hollow region of the post-filter 602 after being filtered again by the post-filter 602, and then be discharged into a subsequent water path from the interface 203 communicated with the hollow region.

Alternatively, referring to fig. 1 and 2, when the rear filter element assembly is located in the rear cavity formed by the side wall 5011 and the bottom plate 5012 of the water drive can end 501, whether the pure water inlet/outlet 203 comprises one interface or two interfaces, the water source inlet 201, the pure water outlet 202 and the pure water inlet/outlet 203 may be disposed on the top of the composite filter element housing 20, so as to facilitate the installation of the dual front single rear composite filter element 20.

In practical applications, the water source inlet 201, the purified water outlet 202 and the purified water inlet and outlet 203 may be disposed at any position of the composite filter element housing 20 as required, for example, as shown in fig. 3, the purified water inlet and outlet 203 includes an interface 2031 and an interface 2032, the water source inlet 201, the interface 2031 and the interface 2032 are disposed at the top end of the composite filter element housing 20 close to the first front upper end cover 3011, and the purified water outlet 202 is disposed at the bottom end of the composite filter element housing 20 close to the front lower end cover 3012. At this time, the front lower end cover 3012 is provided with an opening 3012a, and the opening 3012a is directly communicated with the purified water outlet 202. The waterway flow direction of the double-front single-rear composite filter element shown in the figure 3 can be described by referring to the waterway flow direction of the figure 1.

Alternatively, as shown in fig. 4, the pure water inlet/outlet 203 includes a connector 2031 and a connector 2032, the connector 2031, the connector 2032 and the pure water outlet 202 are located at the top end of the composite filter cartridge housing 20 close to the first front upper end cover 3011, and the water source inlet 201 is located at the bottom end of the composite filter cartridge housing 20 close to the front lower end cover 3012. The waterway flow direction of the double-front single-rear composite filter element shown in fig. 4 can be described by referring to the waterway flow direction of fig. 1.

Alternatively, as shown in fig. 5, the pure water inlet/outlet 203 includes a connector 2031 and a connector 2032, the connector 2031 and the connector 2032 are located at the top end of the composite filter cartridge housing 20 near the first front upper end cover 3011, and the water source inlet 201 and the pure water outlet 202 are located at the bottom end of the composite filter cartridge housing 20 near the front lower end cover 3012. At this time, the front lower end cover 3012 is provided with an opening 3012a, and the opening 3012a is directly communicated with the purified water outlet 202. The waterway flow direction of the double-front single-rear composite filter element shown in fig. 5 can be described by referring to the waterway flow direction of fig. 1.

In practical applications, when the pure water inlet/outlet 203 includes only one connector, the pure water inlet/outlet 203, the water source inlet 201, and the pure water outlet 202 may also be disposed at any position of the composite filter element housing 20 according to installation requirements, and specifically, on the basis of fig. 2, refer to the schematic and description of fig. 3, fig. 4, and fig. 5.

Among the technical scheme that this disclosed embodiment provided, through driving a jar structure with water, two leading filter cores and a rearmounted filter core integration together form two leading single rearmounted composite filter cores, set up the problem that water drives a jar increase volume alone when having solved water purifier pure water bubble membrane and water demand, reduced the whole volume of water purifier, and then reduced the occupation space of water purifier in the basin cabinet, be favorable to the installation of other household electrical appliances in the basin cabinet, user experience preferred.

In one embodiment, the water-drive water-can bag 502 may be secured to the composite cartridge housing 20 by a water-drive can end 501, where the water-drive can end 501 is simply configured to secure the water-drive water-can bag 502 and then the post-filter cartridge assembly is placed in the water-drive water-can bag 502. As shown in fig. 6, raw water from an external water source may enter the water source cavity 10a from the water source inlet 201, enter the first pre-filter 302 through the water inlet of the first pre-filter 302, enter the pre-cavity 10b through the water holes 3013a after being purified by the first pre-filter 302, enter the second pre-filter 402 through the water inlet of the second pre-filter 402, and purified water after being purified by the second pre-filter 402 flows out of the hollow region of the second pre-filter 402 and enters the water purification cavity 10c formed by the water drive tank assembly, the first pre-filter assembly and the second pre-filter assembly. Because the pure water cavity 10c is communicated with the pure water outlet 202, the pure water flowing into the pure water cavity 10c can flow out from the pure water outlet 202, so as to be conveyed to the reverse osmosis filter element for further filtration treatment through a corresponding pipeline.

Pure water obtained by filtration of the reverse osmosis filter element can enter the double-prepositive single-postposition composite filter element through the pure water inlet and outlet 203 again, and the pure water inlet and outlet 203 in fig. 6 including the two

connectors

2031 and 2032 is taken as an example for explanation. Assuming that the connection 2031 is a pure water inlet and the connection 2032 is a water outlet, pure water filtered by the reverse osmosis cartridge may directly enter the water drive tank end cap 501 through the connection 2031 for storage.

When a user takes water or needs a pure water bubble membrane, the pure water stored in the water-driving tank water bag 502 can be extracted through the interface 2032, and at this time, the pure water stored in the water-driving tank water bag 502 can be exposed from the rear filter element 602 to the inner space region of the water-driving tank water bag 502 to enter the rear filter element 602, and then enter the hollow region of the rear filter element 602 after being filtered by the rear filter element 602, and then be discharged into a subsequent water path from the interface 2032 communicated with the hollow region.

In practical applications, the connection 2031 may also be a water outlet, and the connection 2032 may be a water outlet, so that pure water filtered by the reverse osmosis filter element may enter the hollow area of the post-filter element 602 through the connection 2032, and then enter the water-drive tank 502 for storage after being filtered by the post-filter element 602.

When a user takes water or needs a pure water bubble film, the pure water stored in the water-driving tank water bag 502 can be pumped through the interface 2031, and at this time, the pure water stored in the water-driving tank water bag 502 can be drained into a subsequent water path from the interface 2031.

In one embodiment, when the post-filter element assembly is located in the water-drive tank water bag 502, the pure water inlet/outlet 203 may comprise only one port, as shown in fig. 7, and pure water filtered by the reverse osmosis filter element may enter the hollow region of the post-filter element 602 through the port 203, and then flow into the water-drive tank water bag 502 for storage after being filtered by the post-filter element 602.

When a user takes water or needs a pure water bubble membrane, the pure water stored in the water-driving water tank 502 can be pumped through the interface 203, and at this time, the pure water stored in the water-driving water tank 502 can enter the post-filter 602 from the region of the post-filter 602 exposed inside the water-driving water tank 502, enter the hollow region of the post-filter 602 after being filtered again by the post-filter 602, and then be discharged into a subsequent water path from the interface 203 communicated with the hollow region.

Similarly, when the rear filter element assembly is located in the water-driving tank 502, the water inlet 201, the purified water outlet 202 and the purified water inlet/outlet 203 can be disposed at any position of the composite filter element housing 20 as required, for example, referring to fig. 6 and 7, the water inlet 201, the purified water outlet 202 and the purified water inlet/outlet 203 can be all located at the top end of the composite filter element housing 20 close to the first front upper end cover 3011. Or, the pure water inlet and outlet 203 and the water source inlet 201 are located at the top end of the composite filter element housing 20 close to the first front upper end cover 3011, and the pure water outlet 202 is located at the bottom end of the composite filter element housing 20 close to the front lower end cover 3012. Or, the pure water inlet and outlet 203 and the pure water outlet 202 are located at the top end of the composite filter element housing 20 close to the first front upper end cover 3011, and the water source inlet 201 is located at the bottom end of the composite filter element housing 20 close to the front lower end cover 3012. Or, the pure water inlet and outlet 203 is located at the top end of the composite filter element housing 20 close to the first front upper end cover 3011, and the water source inlet 201 and the pure water outlet 202 are located at the bottom end of the composite filter element housing 20 close to the front lower end cover 3012. The waterway flow directions of the double front-mounted single rear-mounted composite filter element 20 with different structures can be described in the waterway flow directions of the above-mentioned fig. 6 and fig. 7.

In one embodiment, as shown in fig. 8, the post-cartridge-fixing part 601 further includes a central pipe 6013, and the pure water inlet/outlet 203 includes two

ports

2031 and 2032 for filling the water-drive tank water bag 502 with pure water and pumping the water-drive tank water bag 502 to store pure water; the central pipe 6013 is disposed in the hollow region of the rear filter element 602, the upper end of the central pipe is connected to the rear upper cover 6011, and is connected to one of the two ports through the hollow region of the rear upper cover 6011, and the lower end of the central pipe passes through the rear lower cover 6012 and is connected to the water-driving tank 502. The water-driven tank water bag 502 can be communicated with the other of the two ports through the rear filter element 602 and the second pure water cavity 10e formed by the rear filter element 602 and the central pipe.

For example, referring to fig. 8, if the rear filter cartridge assembly is disposed in the rear cavity formed by the side wall 5011 and the bottom plate 5012 of the water drive tank end 501, raw water from an external water source may enter the water source cavity 10a from the water source inlet 201, enter the first pre-filter 302 through the inlet of the first pre-filter 302, enter the pre-filter cavity 10b through the water passing hole 3013a after being purified by the first pre-filter 302, then enter the second pre-filter 402 through the inlet of the second pre-filter 402, and purified water after being purified by the second pre-filter 402 flows out of the hollow area of the second pre-filter 402 and enters the water purification cavity 10c formed by the water drive tank assembly, the first pre-filter cartridge assembly and the second pre-filter cartridge assembly. Because the pure water cavity 10c is communicated with the pure water outlet 202, the pure water flowing into the pure water cavity 10c can flow out from the pure water outlet 202, so as to be conveyed to the reverse osmosis filter element for further filtration treatment through a corresponding pipeline.

Assuming that the connection 2031 is a water inlet and the connection 2032 is a water outlet, pure water filtered by the reverse osmosis cartridge can enter the second pure water cavity 10e formed by the central pipe 6013 and the rear cartridge 602 through the connection 2031, enter the rear cartridge 602 from the exposed area of the rear cartridge 602 in the second pure water cavity 10e, be purified by the rear cartridge 602, enter the first pure water cavity 10d formed by the rear cartridge and the water drive tank cap 501, and then flow into the water drive tank water bag through the through hole 5012a provided in the bottom plate 5012 of the water drive tank cap 501 for storage.

When a user takes water or needs a pure water bubble film, pure water stored in the water-driving tank water bag 502 can be pumped through the interface 2032, and at this time, the pure water stored in the water-driving tank water bag 502 can be directly discharged from the interface 2032 into a subsequent water path through the hollow area of the central pipe 6013.

In practical applications, the connector 2031 may also be a water outlet, and the connector 2032 may be a water outlet, so that pure water filtered by the reverse osmosis filter element may directly flow into the water-driving tank water bag 502 through the connector 2032 for storage.

When a user takes water or needs a pure water bubble film, pure water stored in the water-driving tank water bag 502 can be pumped through the interface 2031, and at this time, the pure water stored in the water-driving tank water bag 502 can flow into the first pure water cavity 10d through the through hole 5012a, then enters the post-filter 602 from the region of the post-filter 602 exposed in the first pure water cavity 10d, and enters the second pure water cavity 10e after being purified by the post-filter 602, and then is discharged into a subsequent water path from the interface 2031.

In one embodiment, as shown in fig. 9, if the post-filter cartridge assembly is disposed in the water-driving tank water bag 502, raw water from an external water source can enter the water source cavity 10a from the water source inlet 201, enter the first pre-filter cartridge 302 through the inlet of the first pre-filter cartridge 302, enter the pre-cavity 10b through the water through holes 3013a after being purified by the first pre-filter cartridge 302, then enter the second pre-filter cartridge 402 through the inlet of the second pre-filter cartridge 402, and purified water passing through the second pre-filter cartridge 402 flows out from the hollow region of the second pre-filter cartridge 402 and enters the purified water cavity 10c formed by the water-driving tank assembly, the first pre-filter cartridge assembly and the second pre-filter cartridge assembly. Because the pure water cavity 10c is communicated with the pure water outlet 202, the pure water flowing into the pure water cavity 10c can flow out from the pure water outlet 202, so as to be conveyed to the reverse osmosis filter element for further filtration treatment through a corresponding pipeline.

Assuming that the connection 2031 is a water inlet and the connection 2032 is a water outlet, pure water filtered by the reverse osmosis cartridge can enter the second pure water cavity 10e formed by the central pipe 6013 and the rear cartridge 602 through the connection 2031, and then enter the rear cartridge 602 from the exposed area of the rear cartridge 602 in the second pure water cavity 10e, and then flow into the water-driving tank 502 for storage after being purified by the rear cartridge 602.

When a user takes water or needs a pure water bubble membrane, the pure water stored in the water-driving tank water bag 502 can be pumped through the interface 2031, and at this time, the pure water stored in the water-driving tank water bag 502 can enter the post-filter 602 from the region of the post-filter 602 exposed inside the water-driving tank water bag 502, and enter the second pure water cavity 10e after being purified by the post-filter 602, and then be discharged into a subsequent water path from the interface 2031.

Similarly, when the rear filter element assembly includes the central pipe 6013, the water source inlet 201, the purified water outlet 202, and the purified water inlet/outlet 203 may be disposed at any position of the composite filter element housing 20 as required, for example, referring to fig. 8 and 9, the water source inlet 201, the purified water outlet 202, and the purified water inlet/outlet 203 may be disposed at the top end of the composite filter element housing 20 near the first front upper end cover 3011. Or, the pure water inlet and outlet 203 and the water source inlet 201 are located at the top end of the composite filter element housing 20 close to the first front upper end cover 3011, and the pure water outlet 202 is located at the bottom end of the composite filter element housing 20 close to the front lower end cover 3012. Or, the pure water inlet and outlet 203 and the pure water outlet 202 are located at the top end of the composite filter element housing 20 close to the first front upper end cover 3011, and the water source inlet 201 is located at the bottom end of the composite filter element housing 20 close to the front lower end cover 3012. Or, the pure water inlet and outlet 203 is located at the top end of the composite filter element housing 20 close to the first front upper end cover 3011, and the water source inlet 201 and the pure water outlet 202 are located at the bottom end of the composite filter element housing 20 close to the front lower end cover 3012. The waterway flow directions of the double front-mounted single rear-mounted composite filter element 20 with different structures can be described in the waterway flow directions of the above-mentioned fig. 8 and fig. 9.

The embodiment of the utility model provides a two leading single rearmounted composite filter core, through driving a jar structure, two leading filter cores and a rearmounted filter core integration with water together, set up the problem that water drives a jar increase volume alone when having solved water purifier pure water bubble membrane and water demand, reduced the whole volume of water purifier, and then reduced the occupation space of water purifier in the basin cabinet, be favorable to the installation of other household electrical appliances in the basin cabinet, user experience preferred.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

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

Claims

1. The utility model provides a two leading single rearmounted composite filter cores which characterized in that includes:

2. The dual front single rear composite filter element according to claim 1, wherein the pure water inlet/outlet comprises an interface, the interface is disposed corresponding to the hollow area of the rear upper end cover, and the interface is used for filling pure water into the water drive tank water bag and extracting pure water stored in the water drive tank water bag;

3. The dual front-mounted single rear-mounted composite filter element according to claim 1, wherein the pure water inlet and outlet comprises two ports for filling pure water into the water-drive tank water bag and extracting pure water from the water-drive tank water bag for storage;

4. The dual front-mounted single rear-mounted composite filter element according to claim 1, wherein the pure water inlet and outlet comprises two ports for filling pure water into the water-drive tank water bag and extracting pure water from the water-drive tank water bag for storage; the rear filter element fixing part also comprises a central pipeline;

5. The dual front single rear composite filter element according to any one of claims 1 to 4, wherein said purified water inlet/outlet, said source water inlet and said purified water outlet are located at one end of said composite filter element housing adjacent to said first front upper end cap.

6. The dual front single rear composite filter element according to any one of claims 1 to 4, wherein the water source inlet is located at one end of the composite filter element housing near the front lower end cap, and the purified water outlet and the purified water inlet and outlet are located at one end of the composite filter element housing near the first front upper end cap.

7. The double-front single-rear composite filter element according to any one of claims 1 to 4, wherein the pure water inlet and outlet is located at one end of the composite filter element shell close to the first front upper end cover, the water source inlet and the pure water outlet are located at one end of the composite filter element shell close to the front lower end cover, and the front lower end cover is provided with an opening which is communicated with the pure water outlet.

8. The dual front single rear composite cartridge of any one of claims 1 to 4, wherein the water-drive can end comprises a side wall and a bottom plate, the bottom plate covering an open end of the water-drive can water bag;

9. The dual front single rear composite cartridge of claim 8, wherein the fluid guide shell is provided with a first stop corresponding to a bottom plate of the water drive can end for defining a minimum distance between the water drive can end and the second front cartridge component.

10. The dual front single rear composite filter cartridge of claim 8 wherein the side wall of the water drive can end is provided with a second stop corresponding to the rear lower end cap for defining a minimum distance between the rear lower end cap and the floor of the water drive can end.

11. The dual front single rear composite filter element according to any one of claims 1 to 4 wherein the rear filter element assembly is disposed in the water drive tank water bag.