CN106512538B

CN106512538B - Method for hermetically connecting water purifier assembly pipeline base and filter liner shell

Info

Publication number: CN106512538B
Application number: CN201510613797.7A
Authority: CN
Inventors: 杜也兵; 冉伊虹
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-09-12
Filing date: 2015-09-12
Publication date: 2020-10-09
Anticipated expiration: 2035-09-12
Also published as: CN106512538A

Abstract

The invention relates to the water treatment industry, in particular to filtration of drinking water. The invention discloses a method for hermetically connecting a water purifier assembly pipeline base and a filter liner shell and the filter liner shell, wherein a base and a cover plate are connected through a multi-groove hole sealing gasket, a screw and nut boss structure to form the assembly pipeline base, and are respectively hermetically connected with butt joint water openings of the filter liner shell with a built-in filter body through pipeline butt joint water openings to form a filter channel; the lower part of the filter liner shell is connected and matched with the assembly pipeline base, a shell sealing groove structure is arranged, and a shell sealing element is used for sealing a connecting gap between the filter liner shell and the assembly pipeline base; placing a nut boss structure for assembling the pipeline base between the shell sealing element and the water gap sealing element; the nut boss structure is arranged on the filter liner shell or the assembled pipeline base; the filter liner shell is provided with a shell sealing structure for sealing each nut structure on the inner side.

Description

Method for hermetically connecting water purifier assembly pipeline base and filter liner shell

Technical Field

The invention relates to the water treatment industry, in particular to the aspects of deep filtration and purification of drinking water.

Background

At present, most of water purifiers at medium and low prices adopt a suspension model structure mode with an open type inner container. The filter shell with the built-in liner is hung on a machine structure below the base, although the filter cartridge can be reused, the water pressure inside and outside the simple sealed shell used by the built-in filter liner is consistent or close, the filter shell only plays an isolation role, so the cost is extremely low, and the cost of the filter liner can be directly reduced by about 20 percent, but the problems of difficult replacement of the liner and the like are correspondingly brought. Usually, the water purifier is directly placed in a kitchen cabinet by placing a filter shell with a built-in filter liner, the water purifier needs to be taken out and erected when the liner is replaced, then a special filter liner wrench is sleeved on the filter shell from bottom to top, and the filter shell can be detached by forcibly rotating the filter shell and the machine base through threaded connection. After the new inner container is replaced, the filter shell with the built-in filter inner container is screwed down below the machine base by force, and the whole operation process is very laborious. Because the water purifier with water is heavy and is dragged by the water inlet and outlet hoses, the operation is difficult, and the operation is laborious, time-consuming and requires no special spanner. Moreover, because the inner container is connected in series in the water purifier, water leakage is easy to occur carelessly during replacement. Because the sealing elements of the existing flat-mouth built-in filter liner are arranged at the upper end and the lower end of the built-in filter liner, the filter shell hung below the machine base is not screwed up slightly, and a filter material layer of the built-in filter liner is short-circuited: tap water flows directly from the water inlet to the water outlet without passing through the filter material layer, all of which are operated by feeling experience and are very laborious. Therefore, when the filter liner needs to be replaced, a professional maintenance person needs to be contacted to make a reservation for home service, and accordingly additional expenses such as manpower, financial resources and traffic cost of a professional sales service company are increased. These additional incurred associated costs are ultimately transferred to the consumer. As a horizontal water purifier which is very convenient to use, the water purifier can be placed on the table top of a kitchen cabinet and also can be placed in the cabinet. The machine is directly placed on the use position without punching and hanging the machine. Because the filter liner is positioned above the machine base, the filter liner is convenient to replace, and time and labor are saved relatively. However, the biggest problem of adopting the seat type water purifier structure is that the machine can only be provided with a layer of filter liners which are vertically arranged, the window display device and the operation control device are arranged on the side vertical surface of the machine, relevant parts of the machine are placed below the filter liners, and the upper surface of the shell is reserved for extracting and replacing the filter liners. Although limited by the narrow horizontal section profile of the machine, the requirement of the number of filter liners can be met by arranging two rows of filter liners in a staggered manner, the window display device and the operation control device which are difficult to arrange originally are more difficult. The machine operation surface and the component placing space are lacked, and particularly the space for arranging the components in a difficult-to-position mode is lacked. Therefore, the water purifier with five filter liners or more than five filter liners is rarely in a horizontal mode, and is still in a suspension type structure mode of an open liner configuration, wherein the open liner configuration is provided with a middle control layer and a layer of filter liner respectively arranged above and below the middle control layer. The defects and shortcomings directly influence the popularization of the water purifier.

Disclosure of Invention

The invention mainly solves the technical problem of providing a simple and practical method for hermetically connecting the water purifier assembly pipeline base and the filter liner shell, so as to overcome the defects and shortcomings.

A water purifier assembly pipeline base and a filter liner shell sealing connection method is characterized in that a base provided with a plurality of pipeline open grooves and a cover plate are connected into a whole through a multi-groove hole sealing gasket arranged between two parts and a screw and nut connecting structure positioned on two sides of the two parts to form an assembly pipeline base, and a central butt joint water gap and an eccentric butt joint water gap of the filter liner shell with a built-in filter body are respectively connected through butt joint water gaps to form a filter channel; the lower part of the filter liner shell is connected and matched with the assembled pipeline base or is connected and matched through a filter liner connecting structure, and the filter liner shell connecting structure is at least a thread screwing structure, a clamping groove screwing structure or a screw and nut connecting structure; in the boss structures at the two ends of the screw and nut connecting structure, the structure corresponding to the nut is a nut boss structure, and the structure corresponding to the screw is a screw boss structure; the filter liner is characterized in that a shell sealing structure is arranged and a shell sealing piece is arranged to seal a connecting gap between the filter liner shell and the assembled pipeline base; the boss structure on one side of the joint surface of the filter liner shell in the screw and nut connecting structure for assembling the pipeline base is arranged on the filter liner shell or on the assembling pipeline base and on the inner side of the shell sealing structure.

The filter liner shell is provided with a bottom surface overhead structure, or a nut boss structure correspondingly assembled with the pipeline base, or a screw boss structure correspondingly assembled with the pipeline base.

On the basis that the filter container shell is provided with the bottom surface overhead structure, the connection structure of the filter container shell and the assembled pipeline base is at least a thread screwing structure, or a clamping groove screwing structure, or a structure of one of a screw and nut connection structure, and is connected and matched with the assembled pipeline base through the filter container connection structure. The second layer of water passing channel is arranged between the assembled pipeline base and each filter liner shell with the bottom surface overhead structure, and two butt joint water gaps are arranged on the assembled pipeline base and are connected with the second layer of water passing channel in series, so that the crossing of the pipeline open grooves on the assembled pipeline base is realized, namely when the pipeline open grooves on the assembled pipeline base meet other pipeline open grooves on the same laying plane in the laying process and are difficult to communicate, the other pipeline open grooves which are blocked can be crossed through the second layer of water passing channel formed between the assembled pipeline base and the filter liner shell with the bottom surface overhead structure. At the moment, the inner cavity of the filter liner shell can determine whether to be communicated with the second layer water passing channel or not according to the requirement.

The assembly pipeline base is provided with a thread screwing structure or a clamping groove screwing structure, wherein the annular screwing structure channel corresponds to the lower part of the filter liner shell and is matched with the assembly pipeline base in a screwing way; the annular rotary joint structure channel is positioned on the inner side of the shell sealing structure or on the outer side of the shell sealing structure; the boss structure for assembling the pipeline base is arranged on the inner side of the shell sealing structure and is positioned beside the annular screwing structure channel.

The eccentric butt joint water gap is arranged on the inner side of the shell sealing structure; the water gap sealing element used for the eccentric butt joint water gap is combined with the shell sealing element into a whole.

Two filter container shells with filter bodies respectively arranged inside form a connected double filter container shell, and a shell sealing structure is arranged along the connected double filter container shell; the integrated double filter container shell is connected and matched with the assembly pipeline base through a screw and nut connecting structure arranged on the inner side of a shell sealing joint, wherein, a nut boss structure is arranged on the filter container shell, a screw boss structure is arranged on the assembly pipeline base, or the screw boss structure is arranged on the filter container shell, and the nut boss structure is arranged on the assembly pipeline base; and each pair of water receiving ports of the double-filter liner shell is hermetically connected with the corresponding pair of water receiving ports of the assembly pipeline base through a water port sealing piece arranged respectively.

The filter liner shell is connected and matched with the assembly pipeline engine base through a screw and nut connecting structure, wherein the nut boss structure is arranged on the filter liner shell and is integrated with the nut boss structure which is also arranged on the filter liner shell and used for forming the assembly pipeline engine base.

The outer side of the filter liner shell is provided with a water storage cavity structure which is connected with one of a base and a cover plate of the assembly pipeline machine base; the casing sealing member separates the boss structure located on the inner side of the casing sealing structure from the water storage cavity structure located on the outer side of the casing sealing structure, and the water storage cavity structure is prevented from being communicated with the screw hole of the boss structure, so that the phenomenon that water in the water storage cavity structure leaks outwards along the screw hole arranged on the assembled pipeline base is avoided.

The water inlet of the water storage cavity structure is communicated with a concentrated water discharging port of a reverse osmosis membrane filter body or a nanofiltration membrane filter body at the rear end of a front water inlet pipeline in the filtering channel through an arranged shutoff valve device, and the water outlet of the water storage cavity structure is communicated with the front water inlet pipeline through an arranged water return valve device, namely a water inlet pipeline communicated with the reverse osmosis membrane filter body or the nanofiltration membrane filter body.

A filter liner shell used for the sealing connection method of the assembly pipeline base and the filter liner shell of the water purifier as claimed in the above claim, which comprises a central butt joint water port and an eccentric butt joint water port which are respectively communicated with a built-in filter material body, and a filter liner connection structure, wherein the filter liner connection structure is a thread screwing structure or a clamping groove screwing structure, and is characterized by further comprising a shell sealing structure which corresponds to the connection gap of the assembly pipeline base to be connected and forms each boss structure on the inner side; the part of the shell sealing structure, which is positioned on the filter liner shell, corresponds to a sealing matching surface on the to-be-connected and assembled pipeline base, or corresponds to a shell sealing groove structure on the to-be-connected and assembled pipeline base; the filter liner connecting structure is arranged on the position of the annular screwing structure channel on the corresponding assembly pipeline machine base and is positioned at the outer side of the shell sealing structure or at the inner side of the shell sealing structure.

A filter liner shell used for the sealing connection method of the water purifier assembly pipeline machine base and the filter liner shell according to the above claims, which comprises a central butt joint water gap and an eccentric butt joint water gap which are respectively communicated with a built-in filter material body, and a screw and nut connection structure, and is characterized by further comprising a shell sealing structure which corresponds to the connection gap of the water purifier assembly pipeline machine base to be assembled and forms each boss structure on the inner side; the part of the shell sealing structure, which is positioned on the filter liner shell, is a shell sealing groove structure corresponding to the sealing matching surface of the to-be-connected assembly pipeline engine base or the sealing matching surface of the shell sealing groove structure of the to-be-connected assembly pipeline engine base; the nut boss structure which is correspondingly matched with the screw arranged on the assembled pipeline base to be connected is arranged on the filter liner shell and is positioned at the periphery of each water connection port. Meanwhile, the filter liner shell and the assembled pipeline base to be connected are formed, and the base of the assembled pipeline base to be connected is connected and matched with the cover plate.

A filter liner shell used for the sealing connection method of the water purifier assembly pipeline base and the filter liner shell according to the above claims, which comprises a central butt joint water gap and an eccentric butt joint water gap which are respectively communicated with a built-in filter material body, and a screw and nut connection structure, and is characterized by further comprising a shell sealing structure which corresponds to the connection gap of the assembly pipeline base to be assembled to form each boss structure on the inner side, and a bottom surface overhead structure which corresponds to the nut boss structure in the boss structure of the assembly pipeline base to be assembled; this shell seal structure is located the part on the filter element casing or corresponds and waits to connect the housing seal groove structure of assembling the sealed fitting surface of pipeline frame, or corresponds and waits to connect the sealed fitting surface of assembling the sealed fitting surface of pipeline frame housing seal groove structure: the nut boss structure which is correspondingly matched with the screw arranged on the assembled pipeline base to be connected is arranged on the filter liner shell and is positioned at the periphery of each water connection port. Meanwhile, the filter liner shell and the assembled pipeline base to be connected are formed, and the base of the assembled pipeline base to be connected is connected and matched with the cover plate.

The three filter liner shells and the corresponding pipeline butt joint water gap sealing piece in the corresponding to-be-spliced pipeline base can be arranged on the periphery of each butt joint water gap of the filter liner shells, and can also be arranged on the periphery of the pipe butt joint water gap of the to-be-spliced pipeline base corresponding to the butt joint water gap of the filter liner shells. The three filter container shells are in sealing connection with the assembled pipeline base, and meanwhile, a shell sealing element arranged in the shell sealing structure is used for sealing a connecting gap between the filter container shells and the assembled pipeline base, so that the water storage cavity structure is prevented from being communicated with the screw hole of the nut structure, and water in the water storage cavity cannot leak along the screw and nut combined structure. Similarly, the water gap sealing element can ensure that the filter liner shell is in sealed butt joint with the corresponding pipeline butt joint water gap on the corresponding to-be-spliced pipeline base, and simultaneously prevent water in the butt joint channel from leaking along the screw and nut combined structure.

Compared with the existing water purifier, the water purifier has the following advantages: on the narrow and small filter cartridge casing and the connection cooperation interface of assembling the rigid pipeline frame, make full use of space sets up multilayer connection structure, satisfies the connection of assembling pipeline frame self, assembles being connected between pipeline frame and the filter cartridge casing to and set up the special needs of depositing water cavity structure in the filter cartridge casing outside.

Description of the drawings:

FIGS. 1 and 2 are schematic structural views of two structures of the present invention, in which a closed filter liner casing, a base provided with a plurality of pipeline open grooves, a cover plate are connected through a multi-groove hole sealing gasket, a screw member and a nut boss structure to form an assembled pipeline base, and the two structures are connected and matched in a threaded screwing structure.

FIG. 3 is a schematic structural diagram of the connection and matching of an open filter cartridge housing with a built-in three-nozzle filter body and a filter cartridge connecting structure formed by connecting a base provided with a plurality of pipeline open grooves and a cover plate through a multi-groove sealing gasket, screw members and a nut boss structure to form an assembled pipeline base and combining the screw members and the nut structure.

Detailed Description

Example 1. FIG. 1 is a schematic view of example 1. In the attached figure 1, a filter liner shell 1 with a built-in filter body 2 is connected with an assembled pipeline machine base into a whole through a thread screwing structure 12. The pipeline base is assembled to form a structure that a base 13 provided with a plurality of pipeline open grooves is hermetically connected with a cover plate 3 through a multi-groove hole sealing gasket 15 arranged between the two parts, a screw positioned on one side of the base 13 and a nut positioned on one side of the cover plate 3. In the boss structures at the two ends of the screw and nut connecting structure, the structure corresponding to the nut is a nut boss structure 9, and the structure corresponding to the screw is a screw boss structure 17; the base 13 is provided with corresponding isolation groove belts around each pipeline open groove, and a multi-groove hole sealing gasket 15 is placed on the isolation groove belts. The assembled pipeline engine base is respectively connected with a central butt joint water gap 4 and an eccentric butt joint water gap 7 of a filter liner shell 1 with a filter body 2 inside through a butt joint water gap 5 of a central pipeline and a butt joint water gap 16 of an eccentric pipeline, and a water gap sealing piece 6 is used for sealing the butt joint position of the water gaps to form a filter channel. In terms of the assembly pipeline base, the central pipeline and the eccentric pipeline are only pipelines corresponding to one of the open channels of the tiled pipeline in the open channels of the base 1, and are only named as the central butt joint water gap 4 and the eccentric butt joint water gap 7 which respectively correspond to the filter liner shell 1.

The assembled pipeline engine base has the characteristics of injection molding of pipelines, stable assembling quality and high efficiency, but because a plurality of pipeline open grooves of the base 13 are rigid injection molding pipelines and are formed by combining and connecting with the cover plate 3, the weight is heavy, the cost is high, and therefore, the thin cover plate 3 is arranged, and the nut corresponding to the screw is arranged into the nut boss structure 9 connected with the cover plate 3, so that the screw is conveniently installed. Considering the limitation of narrow horizontal section profile of a machine, the number of the screw and nut boss structures 9 which are vertically connected and installed around a plurality of pipeline open channels is also large, wherein one part of the screw and nut boss structures is positioned in the projection range of the filter container shell 1 with the filter body 2 arranged inside, so that the nut boss structures 9 are arranged on one side close to the filter container shell 1 and below the filter container shell 1; the screw boss is provided on the base 13 side farther from the filter casing 1 to facilitate attachment and detachment of the screw 17.

Between the assembly pipeline machine base and the filter liner shell 1, besides the water gap sealing elements 6 arranged around each water gap, a shell sealing structure for sealing the gap between the contact surfaces of the two components is also arranged. The shell sealing structure comprises a shell sealing groove structure, a shell sealing element 10 and a sealing matching surface. The assembly pipeline machine base is provided with a sealing matching surface, and the filter liner shell 1 is provided with a sealing groove structure for placing a shell sealing element 10. In order to facilitate processing of a sealing groove structure and avoid long-term use aging and abrasion of the shell sealing element 10, the sealing groove structure for placing the shell sealing element 10 is arranged on the filter liner shell 1, so that the shell sealing element 10 can be replaced together with the filter liner shell 1; namely, a sealing groove structure for placing a shell sealing element 10 is arranged on the filter container shell 1, and a sealing structure matching mode that a pipeline base is provided with a sealing matching surface is assembled.

The screw thread screwing structure 12 as the filter liner connecting structure is arranged on the matching position of the annular screwing structure channel 14 on the corresponding assembly pipeline machine base and is positioned on the inner side of the shell sealing structure. The nut boss structure 9 for assembling the pipeline base is arranged inside the shell sealing structure and the annular screwing structure channel 14.

In order to ensure that the base 13 can play a role of stable sealing by arranging the multi-groove hole sealing gasket 15 in the corresponding isolation groove belt around each pipeline open groove, screw holes are arranged at intervals for connecting and fastening the screw and the nut. When screw holes are arranged around a plurality of pipeline open grooves and isolation groove belts of the base 13, corresponding nut boss structures 9 are required to avoid annular screwing structure channels 14, so that the phenomenon that the rotation of the screw screwing structure 12 on the filter liner shell 1 from top to bottom is influenced, and the filter liner shell cannot be installed in an operation machine.

The central butt joint water gap and the eccentric butt joint water gap of the filter liner shell 1 with the built-in filter material body are hermetically connected with the corresponding pipeline butt joint water gaps of the assembled pipeline base through water gap sealing pieces 6 which are respectively arranged to form a filter channel of the filter liner shell 1.

As an improvement, the eccentric butt joint water gap 7 is arranged inside the shell sealing structure and the annular rotary joint structure channel 14; the gate seal 6 for the eccentric docking gate is integrated with the housing seal 10, i.e. the housing seal 10 replaces the gate seal 6 for the eccentric docking gate 7, thereby simplifying the structure.

As another mode of embodiment 1, the housing sealing structure adopts a sealing structure in which the casing sealing member 10 is disposed in the sealing groove of the assembly pipe housing, and the filter cartridge housing 1 is provided with a sealing engagement surface.

The thread screwing structure 12 for connecting the filter liner shell 1 and the assembly pipeline base is arranged on the position corresponding to the annular screwing structure channel 14 on the assembly pipeline base and is positioned on the outer side of the shell sealing structure. The nut boss structure 9 for assembling the pipeline base is arranged on the inner side of the shell sealing structure.

The housing seal structure according to the present embodiment may be in a circumferential surface seal structure mode or an end surface seal structure mode. The shell sealing structure arranged on the filter liner shell seals each nut structure on the inner side.

Example 2. FIG. 2 is a schematic diagram of example 2. On the basis that the filter cartridge housing 1 and the assembly pipeline base connecting structure and the corresponding water ports and the pipeline water ports related to the assembly pipeline base in the embodiment 1 are hermetically connected to form a filter channel, the assembly pipeline base is formed by hermetically connecting a base 13 provided with a plurality of pipeline open grooves, a cover plate 3, a multi-groove hole sealing gasket 15 arranged between the two components, a nut boss structure 9 positioned on one side of the base 13 and a screw 17 positioned on one side of the cover plate 3. The filter liner shell 1 and a base 13 of the assembled pipeline engine base are connected into a whole through a thread screwing structure 12. Furthermore, the thread screwing structure 12 of the filter liner shell 1 is positioned on the matching position of the annular screwing structure channel 14 of the assembly pipeline machine base and is positioned on the inner side of the shell sealing structure. The screw boss structure 17 is located on the side of the cover plate 3. The nut boss structure 9 for assembling the pipeline engine base is arranged on the base 13 and is positioned on the inner side of the annular screwing structure channel 14 of the shell sealing structure.

As an improvement, the base 13 is used for setting the thickness dimension of each pipeline open groove, the nut boss structure 9 is placed in the base 13, and the inner side of the annular rotary joint structure channel 14 on the base 13 is kept flat, so that the bottom structure of the filter container shell 1 is simpler.

Example 3. On the basis that the filter channel is formed by the screw thread screwing structure between the filter liner shell 1 and the assembled pipeline base and the water ports of the pipelines related to each water port and the assembled pipeline base in the embodiments 1 and 2 are in sealing connection, the eccentric butt joint water port of the filter liner shell 1 is arranged on the inner side of the shell sealing structure, is positioned on the outer side of the screw thread screwing structure 12 and is in sealing connection with the butt joint water port 16 of the eccentric pipeline of the assembled pipeline base.

Example 4. On the basis that the filter liner housing 1 and the screw thread screwing structure of the assembled pipeline base and each water receiving port and the related pipeline water port of the assembled pipeline base in the embodiments 1, 2 and 3 are hermetically connected to form a filter channel, the screw thread screwing structure between the liner housing 1 and the assembled pipeline base is arranged on the outer side of the housing sealing structure.

Example 5. On the basis of the embodiments 1 to 4, each pair of water receiving ports of the filter liner shell 1 is hermetically connected with the pipeline water port related to the assembled pipeline base to form a filter channel. The thread screwing structure between the liner shell 1 and the assembled pipeline base is changed into a clamping groove screwing structure. The clamping groove rotary connection structure serving as the filter liner connection structure is arranged on the matching position of the annular rotary connection structure channel on the corresponding assembly pipeline machine base. The clamping groove screwing structure can be positioned on the inner side of the shell sealing structure and also can be positioned on the outer side of the shell sealing structure. The boss structure correspondingly used for assembling the connection structure of the pipeline engine base screw and the nut is positioned beside the annular screwing structure channel.

Embodiment 6, on the basis that each pair of water receiving ports of the filter liner housing 1 in embodiments 1 to 6 is hermetically connected with the water port of the pipeline related to the assembled pipeline base to form the filtering channel, the filter liner housing 1 and the assembled pipeline base are connected and matched by adopting a screw and nut connecting structure, and in boss structures at two ends of the screw and nut connecting structure, a structure corresponding to a nut is a nut boss structure 9, and a structure corresponding to a screw is a screw boss structure 17. And when the nut boss structure 9 is positioned on the filter cartridge housing 1, a housing nut structure 9a is constructed. And each pair of water receiving ports on the filter liner shell 1 is hermetically connected with the corresponding pipeline butt water port of the assembly pipeline base through a water port sealing piece arranged respectively. A shell sealing structure is arranged, and a shell sealing element is arranged to seal a connecting gap between the filter liner shell and the assembled pipeline base; the boss structure on one side of the joint surface of the filter container shell 1 in the screw and nut connecting structure for assembling the pipeline base can be arranged on the filter container shell 1, can also be arranged on the assembling pipeline base and is arranged on the inner side of the shell sealing structure.

In addition, the filter casing 1 may be a two-port filter casing 1 for a two-port filter body, such as a two-port filter casing 1 provided with a central abutting port 4 and an eccentric abutting port 7, respectively, and a two-port filter casing 1 provided with concentric inner and outer abutting ports. The filter cartridge housing 1 can also be used for a triple-nozzle filter cartridge housing 1a of a triple-nozzle filter body, for example, a built-in RO reverse osmosis membrane filter body or NF nanofiltration membrane filter body (not shown) in fig. 3, and the triple-nozzle filter cartridge housing 1a of the upper cover connecting structure 20 is provided, wherein an external pipeline which is communicated with a water inlet end of the RO reverse osmosis membrane filter body or the NF nanofiltration membrane filter body through a wall hole 21 of the housing 1a can adopt a rigid pipeline to be in sealing butt joint with an external pipeline 18 of an assembly pipeline base, that is, a structure in which a butt joint water inlet 19 of the external rigid pipeline shown in fig. 3 is in sealing butt joint with a butt joint water inlet of the external pipeline 18 of the assembly pipeline base, or adopt a structure in which an external hose is in sealing butt joint.

The boss structures at two ends of the screw and nut connecting structure between the filter liner shell 1 and the assembled pipeline base can be positioned on the inner side of the shell sealing structure and can also be positioned on the outer side of the shell sealing structure, wherein the nut boss structure 9 corresponding to the nut in the boss structures is arranged on one side close to the filter liner shell 1, and one part of the nut boss structure is positioned in the projection range of the filter liner shell 1, namely, between the filter liner shell 1 and the assembled pipeline base; the screw boss structure 17 corresponding to the screw in the boss structure is arranged at the far side of the filter container shell 1 so as to facilitate the assembly and disassembly of the screw 17. The nut boss structure 9 can be positioned on one side of the cover plate 3 of the assembled pipeline base, and also can be positioned on one side of the base 13 of the assembled pipeline base, and the corresponding screw boss structure 17 corresponds to the base 13 or the cover plate 3 of the assembled pipeline base.

As a further improvement, two filter container shells respectively internally provided with filter bodies are combined to form a connected double filter container shell, and a shell sealing structure is arranged along the connected double filter container shell; the integrated double filter container shell is connected and matched with the assembly pipeline base through a screw and nut connecting structure arranged on the inner side of a shell sealing joint, wherein, a nut boss structure is arranged on the filter container shell, a screw boss structure is arranged on the assembly pipeline base, or the screw boss structure is arranged on the filter container shell, and the nut boss structure is arranged on the assembly pipeline base; and each pair of water receiving ports of the double-filter liner shell is hermetically connected with the corresponding pair of water receiving ports of the assembly pipeline base through a water port sealing piece arranged respectively.

When the conjoined double filter container shell is two built-in RO reverse osmosis membrane filter bodies or NF nanofiltration membrane filter bodies (not shown) and is provided with a three-water-gap filter container shell 1a parallel structure of an upper cover connecting structure 20, a shared external pipeline communicated with the RO reverse osmosis membrane filter bodies or the NF nanofiltration membrane filter bodies through wall holes 21 of the shell 1a is positioned at a middle concave part of the two filter container shells 1a, the rigid pipeline is in sealed butt joint with an external pipeline 18 of an assembly pipeline base through a water gap sealing piece 6, and a butt joint water gap 19 of the shared external pipeline is positioned at the inner side of a shell sealing structure. In addition, the conjoined double filter container shell formed by the three-nozzle filter container shells 1a with the two parallel structures can also adopt a structure that a shared external hose is hermetically butted with an external pipeline 18 of an assembled pipeline base.

On the basis, a part of the nut boss structures 9 for assembling the pipeline engine base can be arranged on the filter container shell 1 to form shell nut structures 9a, namely, the shell nut structures 9a for connecting and matching the filter container shell and the assembled pipeline engine base and placing the filter container shell are integrated with the nut boss structures 9 for forming the assembled pipeline engine base and the shell nut structures 9a formed on the filter container shell in the same way.

On the basis of embodiment 6, the boss structure on the filter cartridge casing can be arranged on the circumferential surface of the filter cartridge casing and arranged outside the casing sealing structure to form the filter cartridge casing with the mounting lug.

Example 7. On the basis of embodiment 6, the screw boss structure 9 corresponding to the screw in the boss structure is arranged at the side close to the filter container shell, that is, the positions of the screw boss structure 17 and the nut boss structure 9 in embodiment 6 are exchanged, and the technical scheme similar to embodiment 6 can be implemented. Similarly, the positions of the screw boss structure 17 and the nut boss structure 9 used for assembling the pipeline base in the embodiments 1 to 5 can be exchanged, and the technical scheme similar to the embodiments 1 to 5 can also be implemented.

Example 8. On the basis of the embodiments 1-7, a water storage cavity structure is arranged on the outer side of the filter container shell, and the water storage cavity structure is connected with one of a base and a cover plate of the assembly pipeline machine base; the casing sealing member separates the boss structure located on the inner side of the casing sealing structure from the water storage cavity structure located on the outer side of the casing sealing structure, and the water storage cavity structure is prevented from being communicated with the screw hole of the boss structure, so that the phenomenon that water in the water storage cavity structure leaks outwards along the screw hole arranged on the assembled pipeline base is avoided.

As an improvement, the water storage cavity structure is communicated with two parts of pipelines of a machine water channel, and a shell sealing structure is used for communicating the water storage cavity structure arranged at the outer side of the shell sealing structure at the lower part of the filter container shell 1 with a water inlet pipeline and a water outlet pipeline of the filter channel. In the process of replacing the filter container shell 1 with the built-in filter body 2, water flowing out of the filter container shell 1 and the related pipelines of the assembled pipeline base cannot leak out of the water storage cavity structure, and after the new filter container shell 1 is installed and fixed, the water in the water storage cavity structure is continuously divided into two parts and flows along with the water passing links of the filter channel. In addition, the water storage cavity structure can also be used as a farm water discharge tank of an RO reverse osmosis membrane or NF nanofiltration membrane type, and a concentrated water discharge port of the RO reverse osmosis membrane or NF nanofiltration membrane filter body is communicated with a concentrated water discharge pipeline provided with a shutoff valve device to form a water saving device of the water purification machine.

As a further improvement, a water inlet of the water storage cavity structure is communicated with a concentrated water discharge port of a reverse osmosis membrane filter body at the rear end of a front water inlet pipeline in the filtering channel through an arranged shutoff valve device, a water outlet of the water storage cavity structure is communicated with the front water inlet pipeline through an arranged water return valve device, and the 'concentrated water' in the water storage cavity structure is conveyed to the front water inlet pipeline of the machine filtering channel through controlling and opening the water return valve device so as to be pumped to the water inlet end of the RO reverse osmosis membrane or the NF nanofiltration membrane filter body through a booster pump again to be utilized. Consider that it can hold a plurality of two mouths of a river to deposit water cavity structure and strain courage casing 1 to and built-in RO reverse osmosis membrane or NF receive the three mouths of a river of straining the membrane filter body and strain courage casing 1a, and need great volume to deposit water, through the casing seal structure that corresponds each and strain the setting of courage casing, the boss structure that will be located the casing seal structure inboard separates with the water cavity structure that deposits that is located the casing seal structure outside, avoid depositing the screw hole of water intercommunication boss structure in the water cavity structure, place the screw hole structure of screw on apron 3 and the base 13 of pipeline frame and leak outward if assembling.

In the embodiments of the above connection mode using the screwing structure, the filter cartridge housing according to each embodiment includes the central docking port and the eccentric docking port, which are respectively communicated with the filter medium, and the filter cartridge connecting structure, which is either a screw screwing structure or a clamping groove screwing structure. The shell sealing structure is corresponding to the connecting gap of the assembled pipeline bases to be connected and forms boss structures on the inner side; the part of the shell sealing structure, which is positioned on the filter liner shell, corresponds to a sealing matching surface on the to-be-connected and assembled pipeline base, or corresponds to a shell sealing groove structure on the to-be-connected and assembled pipeline base; the filter liner connecting structure is arranged on the position of the annular screwing structure channel on the corresponding assembly pipeline machine base and is positioned at the outer side of the shell sealing structure or at the inner side of the shell sealing structure.

In the embodiments adopting the screw and nut connection structure mode, the filter cartridge housing according to each embodiment includes the central abutting nozzle and the eccentric abutting nozzle which communicate with the filter medium, respectively, and the screw and nut connection structure. The shell sealing structure is corresponding to the connecting gap of the assembled pipeline bases to be connected and forms boss structures on the inner side; the part of the shell sealing structure, which is positioned on the filter liner shell, is a shell sealing groove structure corresponding to the sealing matching surface of the to-be-connected assembly pipeline engine base or the sealing matching surface of the shell sealing groove structure of the to-be-connected assembly pipeline engine base; the nut boss structure which is correspondingly matched with the screw arranged on the assembled pipeline base to be connected is arranged on the filter liner shell and is positioned at the periphery of each water connection port. Meanwhile, the filter liner shell and the assembled pipeline base to be connected are formed, and the base of the assembled pipeline base to be connected is connected and matched with the cover plate.

Example 9. Example 9 is a modification of the above examples 1-8, and related examples. The filter liner shell is provided with a bottom surface overhead structure 8, or a corresponding nut boss structure 9, or a corresponding screw boss structure 17. No matter the boss structure on the side of the joint surface of the filter liner shell 1 on the assembly pipeline base adopts the nut boss structure 9 or the screw boss structure 17, the corresponding filter liner shell and the assembly pipeline base are provided with the shell sealing structure, and the filter liner shell is provided with the bottom surface overhead structure 8 and is positioned on the inner side of the shell sealing structure. The corresponding eccentric butt joint water gap 7 is arranged on the bottom surface overhead structure 8, or is directly in sealed butt joint with the butt joint water gap 16 of the eccentric pipeline on the assembly pipeline base through the water gap sealing piece 6, or is in sealed butt joint with the butt joint water gap 16 of the eccentric pipeline on the assembly pipeline base through the second layer water passing channel 11 between the boss structures on the assembly pipeline base through the water gap sealing piece 6.

The filter container shell is provided with the bottom surface overhead structure 8, so that a larger choice can be arranged at the screw hole position corresponding to the screw and nut connecting structure of the machine assembly pipeline base, and the preselection independent assembly pipeline base brings great convenience to the integral assembly of the machine because the existence of the filter container shell can be not considered. And meanwhile, the weight reduction requirement of the assembled pipeline base is met.

Example 10. Embodiment 10 is the most preferred embodiment. On the basis of the above embodiments 1-9, the water purifier with filtering channel is formed by connecting the filter liner housings 1 with a plurality of built-in filter bodies 2 in series, and the filter liner housings (preposed filter bodies 2) with a plurality of screwed structures are combined with the filter liner housing (fine filter liner with higher filtering precision) with built-in RO membrane filter bodies or built-in NF nanofiltration membrane filter bodies which is arranged after the booster pump is connected in series and adopts a screw and nut connection structure, wherein the filter liner housing arranged before the booster pump is connected with the corresponding screwed structure of the assembled pipeline base into a whole by the screw screwed structure or the clamping groove screwed structure described in the embodiments 1-5. The filter liner shell which is positioned behind the booster pump connected in series and is internally provided with the RO membrane filter body or the NF nanofiltration membrane filter body is connected with the corresponding connecting structure of the assembly pipeline base into a whole by the screw and nut connecting structure of the embodiment 6-7.

As an improvement, two filter container shells internally provided with RO membrane filter bodies or NF nanofiltration membrane filter bodies are arranged behind the booster pump. The three pairs of butt joint water ports of the two filter liner shells adopt a parallel connection mode or a one-stage two-section mode (the concentrated water discharge butt joint water port of the front filter liner shell is connected with the water inlet butt joint water port of the rear filter liner shell, and the two water outlet butt joint water ports are connected in parallel).

As a further improvement, two filter liner shell structures internally provided with RO membrane filter bodies or NF nanofiltration membrane filter bodies are arranged into an integrated double-cavity filter liner shell. The connected double-cavity filter liner shell is also connected with the corresponding connecting structure of the assembled pipeline engine base into a whole by adopting a screw and nut connecting structure. The other filter liner shell is at least one of a screw thread screwing structure, a clamping groove screwing structure or a screw and nut connecting structure.

As an improvement of the above embodiments 9 and 10, on the basis that the filter container housing is provided with the bottom surface overhead structure 8, the lower part of the filter container housing is connected and matched with the assembly pipeline base through the filter container connecting structure, and the connecting structure of the filter container housing and the assembly pipeline base is at least a structure of a thread screwing structure, a clamping groove screwing structure or one of a screw and nut connecting structure. The second layer of water passing channels 11 are arranged between the assembled pipeline base and each filter liner shell provided with the bottom surface overhead structure 8, and two butt joint water gaps are arranged on the assembled pipeline base and connected with the second layer of water passing channels 11 in series, so that crossing of the pipeline open grooves on the assembled pipeline base is realized, namely when the pipeline open grooves on the assembled pipeline base meet other pipeline open grooves on the same laying plane and are difficult to communicate in the laying process, the crossing of the other pipeline open grooves can be realized through the second layer of water passing channels 11 formed between the assembled pipeline base and the filter liner shell provided with the bottom surface overhead structure 8. The inner cavity of the shell of the filter liner shell is communicated with the second layer water passing channel 11 through a butt joint water gap.

In addition, when the pipeline open grooves on the assembled pipeline base meet the blockage of other pipeline open grooves on the same laying plane in the laying process and are difficult to communicate, and pipeline channel spanning needs to be implemented, a second-layer water passing channel 11 can be arranged between the assembled pipeline base and a filter liner shell which is correspondingly provided with the bottom surface overhead structure 8, and two butt joint water gaps are arranged on the assembled pipeline base and are connected with the second-layer water passing channel 11 in series, so that the pipeline open grooves on the assembled pipeline base can be spanned. At this time, the second layer water passage 11 only plays a role of crossing the waterway passage, and the inner cavity of the shell of the filter liner shell and the second layer water passage 11 are in a separated state.

The water gap sealing element for the sealed butt joint of the filter liner shell and the corresponding pipeline butt joint water gap on the corresponding to-be-spliced pipeline base can be arranged on the periphery of each butt joint water gap of the filter liner shell, and also can be arranged on the periphery of the butt joint water gap of the pipeline base corresponding to the butt joint water gap of the filter liner shell and the to-be-spliced pipeline base. The filter liner shell is connected with the assembled pipeline base in a sealing mode, a shell sealing element in the shell sealing structure is arranged in a connecting gap between the filter liner shell and the assembled pipeline base, the water storage cavity structure is prevented from being communicated with the screw hole of the nut structure, and water in the water storage cavity cannot leak along the screw and nut combined structure. Similarly, the water gap sealing element can ensure that the filter liner shell is in sealed butt joint with the corresponding pipeline butt joint water gap on the corresponding to-be-spliced pipeline base, and simultaneously prevent water in the butt joint channel from leaking along the screw and nut combined structure.

In the above embodiments, the nut boss structure or the screw boss structure for connecting the base and the cover plate to form the assembled pipeline base, and the nut boss structure or the screw boss structure located on one side of the filter cartridge casing may be a connected structure connected with one of the two parts of the assembled pipeline base and the assembled cover plate, or a separate structure in contact fit with one of the two parts of the assembled pipeline base and the assembled cover plate.

The above embodiments all support the method for connecting the water purifier assembly pipeline base and the filter container shell in a sealing manner and the structure of the filter container shell.

On the basis of the above embodiments, new embodiments can be constructed by recombining the main technical features of the embodiments, and the embodiments are also within the protection scope of the present invention.

Claims

1. A water purifier assembly pipeline base and filter liner shell sealing connection method, a base provided with a plurality of pipeline open grooves and a cover plate are connected into a whole through a multi-groove hole sealing gasket arranged between two parts and screw and nut connection structures positioned on two sides of the two parts to form an assembly pipeline base, and a boss structure formed by a structure positioned on one side of a connection matching surface of the assembly pipeline base and the filter liner shell in the screw and nut connection structures, or a nut boss structure or a screw boss structure; the related pipelines of the assembled pipeline base are respectively connected with a central butt joint water gap and an eccentric butt joint water gap of a filter liner shell with a built-in filter body through butt joint water gaps to form a filter channel; the lower part of the filter liner shell is connected and matched with the assembled pipeline base through a filter liner shell connecting structure, and the filter liner shell connecting structure is a screw and nut connecting structure and is characterized in that a shell sealing structure with a built-in shell sealing element is arranged for sealing a connecting gap between the filter liner shell and the assembled pipeline base; the boss structure is arranged on the inner side of the shell sealing structure, or on the inner side of a bottom surface overhead structure additionally arranged on the filter liner shell, or on the filter liner shell additionally provided with the bottom surface overhead structure; through this bottom surface overhead structure set up second floor's water channel and be used for strideing across and assemble other pipeline open grooves on the pipeline frame assembling between pipeline frame and the filter courage casing: the second layer of water passing channel is connected with the eccentric butt joint water gap of the filter container shell and the corresponding pipeline butt joint water gap of the assembled pipeline base and spans other blocked pipelines, or is connected with the butt joint water gaps of the two corresponding pipelines of the assembled pipeline base and communicates with the inner cavity of the filter container shell and spans other blocked pipelines.

2. A water purifier assembly pipeline base and filter liner shell sealing connection method, a base provided with a plurality of pipeline open grooves and a cover plate are connected into a whole through a multi-groove hole sealing gasket arranged between two parts and screw and nut connection structures positioned on two sides of the two parts to form an assembly pipeline base, and a boss structure formed by a structure positioned on one side of a connection matching surface of the assembly pipeline base and the filter liner shell in the screw and nut connection structures, or a nut boss structure or a screw boss structure; the assembly pipeline machine base is respectively connected with a central butt joint water port and an eccentric butt joint water port of a filter liner shell with a built-in filter body through butt joint water ports to form a filter channel; the lower part of the filter liner shell is connected and matched with the assembled pipeline base through a filter liner shell connecting structure, and the filter liner shell connecting structure is a thread screwing structure or a clamping groove screwing structure and is characterized in that a shell sealing structure with a built-in shell sealing element is arranged for sealing a connecting gap between the filter liner shell and the assembled pipeline base; the assembly pipeline machine base is provided with an annular screwing structure channel corresponding to a thread screwing structure or a clamping groove screwing structure at the lower part of the filter liner shell; the boss structure is arranged at the inner side of the shell sealing structure and the bottom surface overhead structure additionally arranged on the filter liner shell and is positioned beside the annular rotary connection structure channel; through this bottom surface overhead structure set up second floor's water channel and be used for strideing across and assemble other pipeline open grooves on the pipeline frame assembling between pipeline frame and the filter courage casing: the second layer of water passing channel is connected with the eccentric butt joint water gap of the filter container shell and the corresponding pipeline butt joint water gap of the assembled pipeline base and spans other blocked pipelines, or is connected with the butt joint water gaps of the two corresponding pipelines of the assembled pipeline base and communicates with the inner cavity of the filter container shell and spans other blocked pipelines.

3. The method for sealing and connecting the assembled pipeline base and the filter cartridge shell of the water purifier as claimed in claim 2, wherein the eccentric butt-joint water gap is arranged at the inner side of the sealing structure of the shell; the water gap sealing element used for the eccentric butt joint water gap is combined with the shell sealing element into a whole.

4. A water purifier assembly pipeline base and filter liner shell sealing connection method, a base provided with a plurality of pipeline open grooves and a cover plate are connected into a whole through a multi-groove hole sealing gasket arranged between two parts and screw and nut connecting mechanisms positioned on two sides of the two parts to form an assembly pipeline base, and a boss structure formed by a structure positioned on one side of a connection matching surface of the assembly pipeline base and the filter liner shell in the screw and nut connecting structures, or a nut boss structure or a screw boss structure; the related pipelines of the assembly pipeline base are respectively connected with the central butt joint water gap and the eccentric butt joint water gap of each filter liner shell with the built-in filter body through the butt joint water gap to form a filter channel, and the rear end of a preposed water inlet pipeline in the filter channel is connected with a three-water-gap filter liner shell additionally provided with a reverse osmosis membrane filter body or a nanofiltration membrane filter body with the built-in filter body with a water inlet, a water outlet and a concentrated water outlet through a booster pump; the lower part of the filter liner shell is connected and matched with the assembly pipeline base through a filter liner shell connecting structure, and the filter liner shell connecting structure is either a thread screwing structure, a clamping groove screwing structure or a screw and nut connecting structure; each pair of water receiving ports on the filter liner shell is hermetically connected with the corresponding pipeline butt water port of the assembly pipeline base through a water port sealing piece; the outer side of the filter liner shell is provided with a water storage cavity structure and is connected with one of a base and a cover plate of the assembled pipeline machine base; the water storage cavity structure of the three-water-gap liner shell for accommodating the two-water-gap liner shell and the built-in reverse osmosis or nanofiltration membrane filter body is communicated with a concentrated water discharge port of the reverse osmosis membrane filter body or the nanofiltration membrane filter body through an additionally arranged shutoff valve device, and a water outlet of the water storage cavity structure is communicated with a preposed water inlet pipeline through an additionally arranged water return valve device; the boss structure is arranged on the inner side of the bottom surface overhead structure additionally arranged on the filter liner shell or on the filter liner shell additionally provided with the bottom surface overhead structure; through this bottom surface overhead structure set up second floor's water channel and be used for strideing across and assemble other pipeline open grooves on the pipeline frame assembling between pipeline frame and the filter courage casing: the second layer of water passing channel is connected with the eccentric butt joint water gap of the filter container shell and the corresponding pipeline butt joint water gap of the assembled pipeline base and spans other blocked pipelines, or is connected with the butt joint water gaps of the two corresponding pipelines of the assembled pipeline base and communicates with the inner cavity of the filter container shell and spans other blocked pipelines.

5. The method as claimed in claim 4, wherein the filter channel is a combination of a filter cartridge housing with a screw-on structure and a filter cartridge housing with a built-in reverse osmosis membrane filter or nanofiltration membrane filter after being connected in series with a booster pump and using a screw and nut connection structure, wherein the filter cartridge housing in a pre-positioned water inlet pipeline before being connected in series with the booster pump is connected with the assembly pipeline base as a whole by a screw-on structure or a slot-on screw-on structure; the three-water-gap filter liner shell which is positioned behind the booster pump and is internally provided with the reverse osmosis membrane filter body or the nanofiltration membrane filter body is connected with the assembly pipeline base into a whole by a screw and nut connecting structure.

6. The method for sealingly connecting a water purifier assembly line frame and a filter cartridge housing as claimed in claim 5, wherein two triple-nozzle filter cartridge housings each having a reverse osmosis membrane filter element or a nanofiltration membrane filter element built therein are combined to form a connected dual filter cartridge housing of a parallel connection mode or a "one-stage two-stage" mode, and a housing sealing structure is provided along the connected dual filter cartridge housing; the connected double filter container shell is connected and matched with the assembly pipeline engine base through a screw and nut connecting structure, and a nut boss structure or a screw boss structure is arranged on the filter container shell; and each pair of water receiving ports of the double-filter liner shell is hermetically connected with the corresponding pair of water receiving ports of the assembly pipeline base through a water port sealing piece arranged respectively.

7. A filter container shell used for the sealing connection method of the assembly pipeline base and the filter container shell of the water purifier as claimed in claim 2, 3, 4 or 5 comprises a central butt joint water port and an eccentric butt joint water port which are respectively communicated with a built-in filter material body, and a filter container shell connecting structure which is a threaded screw-on structure or a clamping groove screw-on structure, and is characterized by further comprising a shell sealing groove structure and a filter bottom surface overhead structure; the shell sealing groove structure is positioned on the circumferential surface or the end surface of the filter liner shell, and a shell sealing structure for sealing a matching gap to prevent water from leaking outwards is formed by matching a built-in shell sealing element with a matching surface on the assembled pipeline base to be connected; the filter bottom surface overhead structure arranged at the lower part of the filter liner shell is positioned at the inner side of the shell sealing structure and corresponds to an annular screwing structure channel and a boss structure of an assembled pipeline base to be connected at the inner side of the shell sealing structure; the central butt joint water gap and the eccentric butt joint water gap of the filter liner shell are arranged on the inner side of the shell sealing structure, wherein the eccentric butt joint water gap is arranged on the bottom surface overhead structure, and the butt joint water gap of the eccentric pipeline on the pipeline base to be assembled is in sealing butt joint with a water gap sealing piece through a second layer of water passing channel between the filter liner shell and the pipeline base to be assembled to cross other pipelines blocked on the assembled pipeline base.

8. A filter liner shell used for the sealing connection method of the assembly pipeline base and the filter liner shell of the water purifier as claimed in claim 1, 4 or 6 comprises a central butt joint water port and an eccentric butt joint water port which are respectively communicated with a built-in filter material body, and a filter liner shell connecting structure which is a screw and nut connecting structure, and is characterized by further comprising a shell sealing groove structure and a filter bottom surface hollow structure; the shell sealing groove structure is positioned on the circumferential surface or the end surface of the filter liner shell, and a shell sealing structure for sealing a matching gap to prevent water from leaking outwards is formed by matching a built-in shell sealing element with a matching surface on the assembled pipeline base to be connected; the filtering bottom surface overhead structure arranged at the lower part of the filtering liner shell is positioned at the inner side of the shell sealing structure and takes a nut boss as a boss structure of the assembled pipeline base to be connected; the central butt joint water gap and the eccentric butt joint water gap of the filter liner shell are arranged on the inner side of the shell sealing structure, wherein the eccentric butt joint water gap is arranged on the bottom surface overhead structure, other pipelines blocked on the assembly pipeline base are spanned through a second layer of water passing channel between the filter liner shell and the assembly pipeline base, and the butt joint water gap of the corresponding pipeline on the assembly pipeline base is in sealing butt joint with a water gap sealing element.

9. The filter cartridge housing according to claim 8 for use in the method of sealingly connecting a water purifier assembly line frame and a filter cartridge housing according to claim 1, 4 or 6, wherein the filter cartridge housing is a one-piece double filter cartridge housing having a reverse osmosis membrane filter or a nanofiltration membrane filter built therein: the three pairs of butt joint water ports of the two filter liner shells adopt a parallel connection mode or a 'one-stage two-section' mode.