CN111346425A

CN111346425A - Filter element structure

Info

Publication number: CN111346425A
Application number: CN201911425386.XA
Authority: CN
Inventors: 陈忱; 陈良刚; 陈清
Original assignee: Suzhou Litree Purifying Technology Co Ltd
Current assignee: Suzhou Litree Purifying Technology Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-06-30

Abstract

The invention relates to a filter element structure, which comprises a filter element cover, a shell, a fixing plate, a filter element and a rear shell, wherein the filter element cover comprises a first shell, a second shell and a third shell; the second shell comprises a second extending wall which is fixed on the bottom wall, is inserted into the filter element and is communicated with the water outlet hole and the filter element; the third shell is covered on the second shell and comprises a third extending wall fixed on the bottom wall, the third extending wall is covered on the filter element, and the end part far away from the bottom wall is abutted with the filter element; the water inlet hole and the water drain hole are positioned on the outer side of the second extending wall, the water inlet hole is positioned on the outer side of the third extending wall, and at least one part of the water drain hole is positioned in the third extending wall; the shell is connected with the rear cover in a buckling mode, one end of the filter element is fixedly suspended in the shell, and the other end of the filter element is fixedly suspended in the rear cover; the filter element is convenient to assemble, disassemble and replace.

Description

Filter element structure

Technical Field

The invention relates to the technical field of water purification equipment, in particular to a filter element structure.

Background

Along with the improvement of the living quality requirements of people, the quality requirements of people on drinking water are higher and higher, the water purifier is more and more popular with people, the water purifier is used as water treatment equipment, drinking water meeting the national drinking water sanitation and health standards is output through accessing municipal water, well water, mountain spring water and the like and internal purification treatment, and the water purifier is widely applied to occasions such as public drinking water, family kitchens, water pipelines and the like.

The main components of the existing water purifier are a filter element structure, the filter element structure mainly comprises a casing and a filter element fixed in the casing, a waterway structure, a filter element seat and other structures, municipal water is input through a water inlet of the waterway structure, floating materials, heavy metals, bacteria, viruses, residual chlorine, silt, rust, microorganisms and the like in the water are filtered by the filter element, and drinking water is output through a water outlet of the waterway structure, in order to avoid that the filter element influences the quality of outlet water after being used for a long time and causes secondary pollution, the filter element needs to be replaced along with the increase of times of filtering, but in the existing filter, the filter element can be taken out only by replacing the filter element from one end due to the limitation of the structure and the fixed connection mode of the casing, the filter element is required to be completely removed, and the waterway structure is more in number, the internal parts are required to be combined with each other to realize sealing, resulting in higher maintenance cost and lower product yield.

Disclosure of Invention

Accordingly, it is necessary to provide a filter element structure for solving the problems of inconvenient assembly and disassembly and inconvenient replacement of the filter element.

The utility model provides a filter core structure, includes filter core lid, shell, fixed plate, filter core and backshell, the filter core lid includes first casing, second casing and third casing, wherein:

the first shell comprises a tubular first extending wall and a bottom wall connected with the first extending wall, a water inlet hole, a water outlet hole and a water discharging hole penetrating through the bottom wall are formed in the bottom wall, and the first extending wall is connected with the shell through the fixing plate;

the second shell comprises a tubular second extension wall, one end of the second extension wall is fixed on the bottom wall, the other end of the second extension wall extends in the direction departing from the first extension wall and is inserted into the filter element, and the second extension wall is communicated with the water outlet hole and the filter element;

the third shell is covered on the second shell and comprises a third extending wall fixed on the bottom wall, the third extending wall is covered on the filter element, and the end part far away from the bottom wall is abutted with the filter element;

the water inlet hole and the drain hole are positioned on the outer side of the second extension wall, the water inlet hole is positioned on the outer side of the third extension wall, and at least a part of the drain hole is positioned in the third extension wall;

the shell with back lid buckle is connected, just the one end suspension of filter core is fixed in the shell, the other end suspension is fixed in back lid.

The filter element structure comprises a shell and a rear shell, wherein the shell used for containing the filter element and the filter element cover is arranged into the shell and the rear shell, the shell is connected with the rear cover in a buckling mode, one end of the filter element is fixed in the shell in a suspended mode, the other end of the filter element is fixed in the rear cover in a suspended mode, and a first extension wall is limited to be connected with the shell through a fixing plate; through with the inlet opening, apopore and wash port are integrated to the diapire on, and through first casing, inhalant canal is injectd to second casing and third casing, exhalant canal and drainage channel are kept apart each other, make and just can realize the waterway structure of homonymy business turn over water through a filter core lid, spare part is less, the structure is comparatively simple, need not to operate with the filter core lid water route when renew cartridge, conveniently install and remove and renew cartridge, manufacturing cost and maintenance cost are lower, the product yield is higher.

In one embodiment, the shell comprises a cavity structure with two open ends, and comprises a shell body and an annular first fixing table welded and fixed at one end of the shell body, wherein a group of clamping grooves are formed in the first fixing table, and a group of clamping blocks are arranged on the outer surface of the rear cover.

Above-mentioned filter core structure, a tip welding first fixed station through shell body to set up the draw-in groove on first fixed station, and the surface of back lid is equipped with a set of fixture block with draw-in groove matched with, in order to realize the high-speed joint of backshell and shell.

In one embodiment, the set of clamping blocks is four clamping blocks uniformly distributed on the outer surface of the first extending wall, one end of each clamping block is provided with a guide inclined plane, and one end of each clamping groove is provided with a sliding groove matched with the guide surface.

Above-mentioned filter core structure sets up the direction inclined plane through the one end at the fixture block to set up in the one end of draw-in groove with direction inclined plane matched with spout, direction inclined plane and spout phase-match can realize being connected of backshell and shell more conveniently through the cooperation direction of direction inclined plane and spout.

In one embodiment, the filter element structure further includes a ring-shaped second fixing platform welded to the other end of the housing body, the second fixing platform is a U-shaped groove having an opening along a radial direction of the housing body toward the inside thereof and extending away from the housing body, and the fixing plate is welded in the U-shaped groove and is fixedly connected with the filter element cover through a screw.

Above-mentioned filter core structure is through another tip welding second fixed station at shell body to inject the fixed plate and weld in the U-shaped inslot, and through screw and filter core lid fixed connection, in order to realize the assembly of shell and filter core lid.

In one embodiment, the filter element comprises a cylinder, an extension connector and a filter material, wherein the extension connector and the filter material are arranged in the cylinder, the extension connector is fixed to the cylinder through a support wall and is inserted into the filter material, and the second extension wall is inserted into the extension connector.

Above-mentioned filter core structure is through pegging graft the extension interface in the filter material to inject the second and extend the wall and peg graft in extending the interface, so that through the filterable water carry the second from extending the interface to extend the wall, export from the apopore finally.

In one embodiment, the cartridge arrangement further comprises a first retaining member and a second retaining member, wherein: the first fixing piece comprises a first fixing ring and a first bulge protruding out of the first fixing ring, the first fixing ring is sleeved on the barrel, and the first bulge is embedded in the rear shell; the second fixing part comprises a second fixing ring and a second protrusion protruding from the second fixing ring, a step is arranged on the second fixing ring, the step is far away from the third extending wall and abuts against the end of the bottom wall, the second fixing ring is sleeved on the outer side of the barrel, and the second protrusion is embedded in the shell.

Above-mentioned filter core structure is through setting up first mounting and the second mounting of fixing at the filter core both ends to it has first arch and the second arch of establishing with the casing looks inlays on injecing first mounting and the second mounting, so that fix the filter core suspension in the shell.

In one embodiment, the first fixing member is of an integral structure with the rear housing.

Above-mentioned filter core structure sets to through first mounting and backshell formula structure as an organic whole to reduce spare part, be convenient for install and remove.

In one embodiment, the filter element structure further comprises a first sealing ring and a second sealing ring, a first groove arranged around the first extending wall is formed in the first extending wall, the first sealing ring is arranged in the first groove, the first extending wall and the shell are in sealing fit through the first sealing ring, a second groove arranged around the second extending wall is formed in the outer wall of the rear shell, the second sealing ring is arranged in the second groove, and the rear shell and the shell are in sealing fit through the second sealing ring.

Above-mentioned filter core structure sets up first recess and set up first sealing washer in first recess through setting up first recess on the fourth extension wall, sets up the second recess and sets up at the second recess at the second sealing washer on the outer wall of backshell, can realize the sealed cooperation of filter core lid and shell, backshell convenient and fast ground, avoids the inlet channel to leak.

In one embodiment, the filter cartridge structure further comprises a third sealing ring, the end of the second extension wall inserted into the extension port is provided with a third groove, the third sealing ring is arranged in the third groove, and the second extension wall and the extension port are in sealing fit through the third sealing ring.

Above-mentioned filter core structure through set up the third recess on the second extension wall and set up the third sealing washer in the third recess to when the second extends the wall and inserts the extension interface, can realize convenient and fast ground that filter core and second extend the sealed cooperation between the wall, avoid the water in the water outlet channel to be polluted.

In one embodiment, the filter cartridge structure further comprises a fourth sealing ring, a fourth groove is formed in an end portion, close to the bottom wall, of the second fixing ring, the fourth sealing ring is located in the fourth groove, and the second fixing ring and the third extending wall are in sealing fit through the fourth sealing ring.

Above-mentioned filter core structure sets up the fourth recess and sets up the third sealing washer in the fourth recess through on the solid fixed ring of second to convenient and fast ground realizes the sealed cooperation between barrel and the filter core lid, avoids inlet channel and drainage channel direct intercommunication to cause the emergence of series flow phenomenon.

Drawings

FIG. 1 is a schematic cross-sectional view of a filter cartridge arrangement according to an embodiment of the invention;

FIG. 2 is an exploded view of a filter element arrangement according to an embodiment of the present invention;

FIG. 3 is a schematic view of a filter cover within a filter cartridge arrangement according to an embodiment of the present invention;

FIG. 4 is a schematic illustration of the construction of the inner and outer shells of a filter cartridge arrangement according to one embodiment of the present invention;

fig. 5 is a schematic view of the flow of water through the filter element arrangement according to an embodiment of the present invention.

Wherein:

10. filter element structure 100, filter element cover 110 and first shell

111. A first extension wall 112, a bottom wall 113 and a water inlet

114. Water outlet hole 115, water outlet hole 116, and fourth extension wall

117. First groove 120, second shell 121, second extension wall

122. Third groove 130, third shell 131 and third extension wall

141. First interface 142, second interface 143, and third interface

150. First rib 160, second rib 200, and outer shell

210. Housing body 220, first fixing table 221 and card slot

222. Chute 230, second fixed station 300, filter core

310. Barrel 320, extension interface 330, filter material

331. Filter hole 340, support wall 400, fixing plate

500. Rear shell 510, latch 511, guide inclined plane

512. Anti-back projection 520, second groove 610 and first fixing piece

611. First fixed ring 612, first protrusion 620 and second fixed piece

621. Second fixing ring 622, second protrusion 623 and step

624. A fourth groove 710, a first seal ring 720, a second seal ring

730. Third seal 740, fourth seal

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, 2, 3 and 5, a filter element structure 10 is applied to a water purifier, such as a kitchen water purifier, the filter element structure 10 includes five parts, namely a filter element cover 100, a housing 200, a filter element 300, a fixing plate 400 and a rear casing 500, the filter element cover 100 is covered on the housing 200 and includes a first casing 110, a second casing 120 and a third casing 130, which are integrally formed, the filter element cover 100 of the integrally formed structure can be injection molded by metal alloy or engineering plastic, wherein:

the first casing 110 is a cavity with an opening at one end, the first casing 110 includes a tubular first extending wall 111 and a bottom wall 112 connected with the first extending wall 111, the bottom wall 112 is provided with a water inlet 113, a water outlet 114 and a water outlet 115 penetrating through the thickness of the bottom wall 112 along the extending direction of the first extending wall 111, the first extending wall 111 is connected with the outer shell 200 through the fixing plate 400; when the filter element cover 100 is specifically arranged, in order to facilitate connection of the water inlet hole 113, the water outlet hole 114, the water discharge hole 115 and an external pipeline, the first shell 110 further comprises a first interface 141, a second interface 142 and a third interface 143 which are fixed on the bottom wall 112, the first interface 141 is communicated with the water inlet hole 113, the second interface 142 is communicated with the water outlet hole 114, the third interface 143 is communicated with the water discharge hole 115, in order to facilitate quick assembly of the external pipeline with the first interface 141, the second interface 142 and the third interface 143, connecting structures such as screw teeth are arranged on the first interface 141, the second interface 142 and the third interface 143, in order to improve structural stability of the filter element cover 100, a plurality of first rib plates 150 are arranged between the first interface 141, the second interface 142, the third interface 143 and the first shell 110, and structural strength of the first interface 141, the second interface 142 and the third interface 143 is improved through the first rib plates 150;

the second housing 120 is a cavity with two open ends, and includes a tubular second extending wall 121, one end of the second extending wall 121 is fixed to the bottom wall 112, the other end of the second extending wall 121 extends in a direction away from the first extending wall 111, the second extending wall 121 is inserted into the filter element 300, and the second extending wall 121 communicates with the water outlet hole 114 and the filter element 300;

the third housing 130 is a cavity with two open ends, the third housing 130 is covered on the outer side of the second housing 120, the third housing 130 includes a third extending wall 131 fixed to the bottom wall 112, the third extending wall 131 is covered on the outer side of the filter element 300, and the end of the third extending wall 131 far from the bottom wall 112 is in contact with the filter element 300, when specifically arranged, the third housing 130 may be a trumpet-shaped structure, and at this time, the bottom wall 112 may be a flat plate extending along the axial direction of the first extending wall 111, or in order to improve the space of the water inlet channel, the bottom wall 112 is an arc-shaped plate bending towards the direction of the first extending wall 111, and in order to improve the structural stability of the filter element cover 100, a plurality of second rib plates 160 are arranged between the bottom wall 112 and the third extending wall 131, and the structural strength of the third extending wall 131 is improved by the second rib plates 160;

the water inlet hole 113 and the water discharge hole 115 are located on the outer side of the second extending wall 121, the water inlet hole 113 is located on the outer side of the third extending wall 131, at least a part of the water discharge hole 115 is located inside the third extending wall 131, in a specific arrangement, the water discharge hole 115 may be located entirely inside the third extending wall 131 and entirely outside the second extending wall 121, and the hole wall of the water discharge hole 115 may be connected with a part of the end portion of the third extending wall 131 close to the bottom wall 112 to form a whole;

the housing 200 is snap-coupled with the rear case 500 to detachably fix the rear case 500 to the housing 200, and one end of the filter cartridge 300 is suspended and fixed in the housing 200 and the other end is suspended and fixed in the rear case 500 when the rear case 500 is fixed to the housing 200.

Above-mentioned filter core structure 10, set up to shell 200 and backshell 500 two parts through the casing that will be used for holding filter core 300 and filter core lid 100, shell 200 is connected with backshell 500 buckle, the one end suspension of filter core 300 is fixed in shell 200, the other end suspension is fixed in backshell 500, and inject first extension wall 111 and be connected through fixed plate 400 with the casing, the one end that second extension wall 121 deviates from diapire 112 is pegged graft in filter core 300 and is communicateed outlet hole 114 and filter core 300, the third extension wall 131 covers the tip that is located filter core 300 and keeps away from diapire 112 and filter core 300 looks butt, so that filter core lid 100 can cover the box and fix on filter core 300 comparatively convenient and fast, or when needing to change filter core 300, through dismantling backshell 500 from shell 200 and just can comparatively convenient and fast dismantle filter core 300.

By arranging the water inlet hole 113 at the outer side of the third extending wall 131 and covering the third housing 130 at the outer side of the second housing 120, the gap between the bottom wall 112, the third extending wall 131, the outer shell 200 and the rear shell 500 forms a water inlet channel for inputting municipal water; the water outlet hole 114 is communicated with the filter element 300 through the second extension wall 121, the water inlet hole 113 and the water discharge hole 115 are arranged on the outer side of the second extension wall 121, so that the filter element 300, the second extension wall 121 and the bottom wall 112 are matched to form a water outlet channel for outputting drinking water, and at least a part of the water discharge hole 115 is arranged inside the third extension wall 131, so that the filter element 300, the third extension wall 131, the second extension wall 121 and the bottom wall 112 are matched to form a water discharge channel for discharging water; through with inlet opening 113, apopore 114 and wash port 115 integrate to diapire 112 on, and through first casing 110, the water inlet passage is injectd to second casing 120 and third casing 130, go out water passageway and drainage channel mutual isolation, make the waterway structure of homonymy business turn over water just can be realized through a filter core lid 100, spare part is less, the structure is comparatively simple, need not to operate with filter core lid 100 water route when changing filter core 300, conveniently install and remove and change filter core 300, manufacturing cost and maintenance cost are lower, the product yield is higher.

In order to facilitate the quick connection between the rear case 500 and the outer case 200, as shown in fig. 1, fig. 2, fig. 4 and fig. 5, in a preferred embodiment, the outer case 200 includes a cavity structure with two open ends, and includes an outer case body 210 and an annular first fixing table 220 welded and fixed at one end of the outer case body 210, the first fixing table 220 is provided with a set of slots 221, and opposite to the slots, the outer surface of the rear case 500 is provided with a set of blocks 510.

In the filter cartridge 10, the first fixing platform 220 is welded at one end of the housing body 210, the clamping groove 221 is formed in the first fixing platform 220, and the set of clamping blocks 510 matched with the clamping groove 221 is arranged on the outer surface of the rear shell 500, so that when the rear shell 500 is assembled on the housing 200, the rear shell 500 and the housing 200 can be quickly connected through the clamping connection of the clamping blocks 510 and the clamping grooves 221; in specific setting, the first fixing stage 220 may be welded and fixed at an end of the housing body 210, and the first fixing stage 220 and the housing body 210 may be injection molded to form an integrated structure, and the snap connection between the rear shell 500 and the housing 200 may be implemented by the structural forms of the above-mentioned slot 221 and the latch 510, which is not limited to this, but may also be implemented by other structural forms, for example, a boss having a groove is formed at an outer side of the rear shell 500, and a latch hook matched with the groove is provided on an outer wall of the housing 200, and the specific structural form of the snap connection between the rear shell 500 and the housing 200 is determined according to the actual situation of the filter element structure 10. It should be noted that, in order to further facilitate the quick connection between the rear case 500 and the housing 200, a rotary handle may be disposed on the rear case 500 or the housing 200, so as to facilitate the relative rotation between the rear case 500 and the housing 200, and the handle may be configured to fix various convenient structures such as a handle shape and a detachable handle.

To facilitate the quick assembly of the rear housing 500 and the outer housing 200, specifically, as shown in fig. 1, 3, 4 and 5, the set of latches 510 is four latches 510 uniformly distributed on the outer surface of the first extending wall 111, one end of the latch 510 is provided with a guiding inclined surface 511, and correspondingly, one end of the latch 221 is provided with a sliding groove 222 matching with the guiding surface.

In the filter cartridge 10, the guide inclined plane 511 is disposed at one end of the latch 510, the sliding groove 222 matched with the guide inclined plane 511 is disposed at one end of the latch 221, the guide inclined plane 511 is matched with the sliding groove 222, and the connection between the rear housing 500 and the housing 200 can be conveniently achieved through the matching guide of the guide inclined plane 511 and the sliding groove 222.

In order to improve the stability of the snap-fit connection between the rear case 500 and the housing 200, more specifically, as shown in fig. 1, 2, 4 and 5, the latch 510 is provided with a protrusion 512 at the end opposite to the guiding inclined plane 511, and the latch 221 is provided with a protrusion matching with the protrusion 512.

In the filter cartridge structure 10, the anti-receding bump 512 is arranged on the fixture block 510, the protrusion matched with the anti-receding bump 512 is arranged on the clamping groove 221, the anti-receding bump 512 is matched with the protrusion, and the outer shell 200 and the rear shell 500 can be fastened under the matching action of the anti-receding bump 512 and the protrusion, so that the receding phenomenon is avoided, and the stability of the fastening connection between the rear shell 500 and the outer shell 200 is improved; in a specific arrangement, the guiding inclined plane 511 and the anti-receding protrusion 512 may be arranged in such a manner that the guiding inclined plane 511 is disposed on a side of one end of the fixture block 510 away from the bottom wall 112, and the anti-receding protrusion 512 is disposed on a side of the other end of the fixture block 510 toward the bottom wall 112, or other arrangement manners may be adopted, for example, the guiding inclined plane 511 is disposed on a side of one end of the fixture block 510 toward the bottom wall 112, the anti-receding protrusion 512 is disposed on a side of the other end of the fixture block 510 away from the bottom wall 112, and a specific structural form of the fixture block 510 is determined according to actual conditions.

To facilitate assembly of the housing 200 and the filter element cover 100, specifically, as shown in fig. 1, 2, 3 and 5, the filter element structure 10 further includes a ring-shaped second fixing stage 230 welded to the other end of the housing body 210, the second fixing stage 230 is a U-shaped groove having an opening facing the inside of the housing body 210 in a radial direction thereof and extending away from the housing body 210, the fixing plate 400 is welded in the U-shaped groove, and the fixing plate 400 is fixedly connected to the filter element cover 100 by screws.

The filter cartridge structure 10 is assembled by welding the second fixing stage 230 to the other end of the housing body 210, welding the limiting fixing plate 400 into the U-shaped groove, and fixedly connecting the filter cartridge cover 100 with the housing 200 by screws; in a specific arrangement, the second fixing stage 230 may be welded and fixed at an end of the housing body 210, and the second fixing stage 230 and the housing body 210 may be injection-molded to form an integral structure, and the fixing connection between the filter element cover 100 and the housing 200 may be implemented by the fixing plate 400 and the screws, which is not limited to this, but may be implemented by other structures, for example, the fixing plate 400 is welded to the filter element cover 100, the fixing plate 400 is snap-connected to the U-shaped groove, and the specific structure for implementing the fixing connection between the rear housing 500 and the housing 200 is determined according to the actual situation of the filter element structure 10.

In a preferred embodiment, as shown in fig. 1 and 2, the filter cartridge 300 includes a cylinder body 310, an extension connector 320 and a filter material 330, the extension connector 320 is fixed to the cylinder body 310 through a support wall 340, the extension connector 320 is inserted into the filter material 330, and the second extension wall 121 is inserted into the extension connector 320.

In the filter element structure 10, the extension connector 320 is fixed to the cylinder body 310 through the support wall 340, when the filter element structure is specifically arranged, the extension connector 320, the support wall 340 and the cylinder body 310 may be an injection-molded integrated structure, the tubular extension connector 320 is located in the cylinder body 310, the plurality of support walls 340 fixedly connect the extension connector 320 and the cylinder body 310, the number of the support walls 340 may be three, four, six, and the like, the filter material 330 is arranged in the cylinder body 310, and the extension connector 320 is inserted into the filter material 330, so that filtered water enters the extension connector 320 from the filter material 330 and then is output, the filter material 330 may be a membrane wire, and the filter material 330 may also be fillers such as activated carbon or energy balls; by inserting the extension interface 320 into the filter material 330 and defining the second extension wall 121 to be inserted into the extension interface 320, the filtered water is directly conveyed from the extension interface 320 to the second extension wall 121 and finally is conveyed out from the water outlet hole 114.

To facilitate the suspended securing of the cartridge 300, specifically, as shown in fig. 1 and 2, the cartridge arrangement 10 further includes a first securing member 610 and a second securing member 620, wherein: the first fixing member 610 includes a first fixing ring 621 and a first protrusion 612 protruding from the first fixing ring 621, the first fixing ring 621 is sleeved on one end of the cylinder body 310 far away from the filter element cover 100, and the first protrusion 612 is embedded in the rear case 500 to play a role in supporting and limiting; the second fixing piece 620 comprises a second fixing ring 621 and a second protrusion 622 protruding from the second fixing ring 621, a step 623 is arranged on the second fixing ring 621, the step 623 and the third extending wall 131 are abutted against the end part far away from the bottom wall 112, the second fixing ring 621 is sleeved on the end part, close to the filter element cover 100, of the cylinder body 310, and the second protrusion 622 is embedded in the housing 200 to play a role in supporting and limiting.

The filter cartridge structure 10 is provided with the first fixing member 610 and the second fixing member 620 fixed at two ends of the filter cartridge 300, and the first fixing member 610 and the second fixing member 620 are limited to have the first protrusion 612 and the second protrusion 622 embedded with the housing 200, so that one end of the filter cartridge 300 is suspended and fixed in the housing 200, and the other end is suspended and fixed in the rear housing 500. When the filter element cover 100 is specifically arranged on the housing 200, the first fixing ring 621 and the first protrusion 612 may be of an injection-molded integrated structure, the number of the first protrusions 612 may be two, three, four, five, and the like, the plurality of first protrusions 612 are uniformly arranged on the outer side of the first fixing ring 621, similarly, the second fixing ring 621 and the second protrusion 622 may be of an injection-molded integrated structure, the number of the second protrusions 622 may be two, three, four, five, and the like, the plurality of second protrusions 622 are uniformly arranged on the outer side of the second fixing ring 621, a step 623 is arranged on one side of the second fixing ring 621 facing the bottom wall 112, and the shape of the step 623 is matched with the shape of the end of the third extending wall 131 far away from the bottom wall 112, so that the step 623 is abutted against the end of the third extending wall 131 far away from the bottom wall 112.

The filter element 300 is suspended and fixed at a set height of the housing 200 by the first fixing member 610 and the second fixing member 620, and a gap is formed between the first protrusion 612 and the second protrusion 622 and the housing 200, and the third extension wall 131 abuts on the step 623 of the second fixing ring 621 and defines that the outer diameter of the third extension wall 131 is smaller than that of the first extension wall 111, so that a gap is formed between the third extension wall 131 and the housing 200, so that the bottom wall 112, the third extension wall 131, the first fixing member 610, the second fixing member 620 and the housing 200 are matched to form a water inlet channel for inputting municipal water.

More specifically, the first fixing member 610 is integrally formed with the rear case 500 to facilitate assembly and disassembly.

The filter element structure 10 is integrated with the rear case 500 through the first fixing member 610, so as to reduce the number of parts and facilitate assembly and disassembly. In a specific arrangement, the first fixing element 610 may be fixed to the rear case 500 or the cylinder body 310, at this time, the second fixing element 620 may be detachably and fixedly connected to the case 200 and the cylinder body 310, and the second fixing element 620 may be fixed to the rear case 500 or the cylinder body 310, at this time, the first fixing element 610 may be detachably and fixedly connected to the case 200 and the cylinder body 310, the first fixing element 610 may be fixed to the rear case 500, and the second fixing element 620 may be fixed to the cylinder body 310, and actual structural forms of the first fixing element 610 and the second fixing element 620, the case 200, and the cylinder body 310 may be determined according to specific conditions of the filter element structure 10.

In order to avoid water leakage in the water inlet channel, as shown in fig. 1, 2 and 5, in a preferred embodiment, the filter element structure 10 further includes a first sealing ring 710 and a second sealing ring 720, the first extending wall 111 is provided with a first groove 117 disposed around it, the first groove 117 is opened on the outer surface of the first extension wall 111, and the first groove 117 extends to a certain depth towards the inside of the first extension wall 111, the first sealing ring 710 is disposed in the first groove 117, the first extension wall 111 and the outer shell 200 are in sealing fit through the first sealing ring 710, the outer wall of the rear shell 500 is provided with a second groove 520 disposed around the outer wall, the second groove 520 is opened at the outer wall of the rear case 500, and the second groove 520 extends to a certain depth toward the inside of the rear case 500, the second sealing ring 720 is disposed in the second groove 520, and the rear case 500 and the outer case 200 are sealingly engaged by the second sealing ring 720.

Above-mentioned filter core structure 10, through set up first recess 117 on fourth extension wall 116 and set up first sealing washer 710 in first recess 117, set up second recess 520 on the outer wall of backshell 500 and set up at second sealing washer 720 in second recess 520, can realize the sealed cooperation of filter core lid 100 and shell 200, backshell 500 conveniently and swiftly, make the municipal water of input from inlet opening 113 can not spill over from between shell 200 and the filter core lid 100, can only get into diapire 112, third extension wall 131, first mounting 610, second mounting 620, filter core 300, shell 200, the inhalant canal that backshell 500 constitutes, avoid inhalant canal to leak. In a specific arrangement, in order to match the compression gap of the first sealing ring 710, a fourth extending wall 116 may be disposed at one end of the first extending wall 111 close to the bottom wall 112, and the fourth extending wall 116 is coaxially disposed with the first extending wall 111, the outer diameter of the fourth extending wall 116 is smaller than that of the first extending wall 111, a first groove 117 is disposed on the fourth extending wall 116 to facilitate the assembly and sealing, the number of the first grooves 117 may be one, two or more, the specific number of the first grooves 117 is determined according to the actual conditions of the filter element structure 10, the specific arrangement position and arrangement degree of the first grooves 117 is determined according to the size of the first sealing ring 710 and the actual conditions of the filter element cover 100, and similarly, the number of the second grooves 520 may be one, two or more, and the specific number of the second grooves 520 is determined according to the actual conditions of the filter element structure 10, the specific arrangement position and arrangement degree of the second groove 520 are determined according to the size of the second seal ring 720 and the actual condition of the rear case 500.

In order to prevent the water in the water outlet channel from being polluted, as shown in fig. 1, fig. 2 and fig. 5, specifically, the filter element structure 10 further includes a third sealing ring 730, an end of the second extension wall 121 inserted into the extension connector 320 is provided with a third groove 122 disposed therearound, the third groove 122 is opened on an outer surface of the second extension wall 121, the third groove 122 extends to a certain depth toward an inside of the second extension wall 121, the third sealing ring 730 is disposed in the third groove 122, and the second extension wall 121 and the extension connector 320 are in sealing engagement with each other through the third sealing ring 730.

According to the filter element structure 10, the third groove 122 is formed in the second extension wall 121, the third sealing ring 730 is arranged in the third groove 122, the second extension wall 121 is inserted into the extension interface 320, and the second extension wall 121 and the extension interface 320 are sealed by the third sealing ring 730, so that the filter element 300 and the second extension wall 121 can be conveniently and quickly matched in a sealing manner, unfiltered municipal water entering from the third extension wall 131, the second extension wall 121 and the extension interface 320 cannot be obtained in water output from the extension interface 320, and only water filtered by the filter material 330 can be output from the extension interface 320, so that water in a water outlet channel is prevented from being polluted, and the filtering precision of the filter element structure 10 is improved. In a specific arrangement, the number of the third grooves 122 may be one, two or more, and the specific number of the third grooves 122 is determined according to the application scenario of the filter cartridge assembly 10, and the depth of the third grooves 122 extending towards the inside of the second extension wall 121 is determined according to the size of the third sealing ring 730 and the actual situation of the filter cartridge cover 100.

In order to avoid series flow caused by direct communication between the water inlet passage and the water outlet passage, as shown in fig. 1, fig. 2 and fig. 5, more specifically, the filter cartridge structure 10 further includes a fourth sealing ring 740, an end portion of the second fixing ring 621 close to the bottom wall 112 is provided with a fourth groove 624 arranged around the end portion, the fourth groove 624 is opened at an outer surface of an end portion of the cylinder body 310 close to the bottom wall 112, the fourth groove 624 extends to a certain depth towards an inner portion of the second fixing ring 621, the fourth sealing ring 740 is arranged in the fourth groove 624, and the second fixing ring 621 and the third extending wall 131 are in sealing fit through the fourth sealing ring 740.

In the filter element structure 10, the fourth groove 624 is formed in the second fixing ring 621, and the fourth sealing ring 740 is arranged in the fourth groove 624, so that the filter element cover 100 is covered on the housing 200, the second fixing ring 621 and the third extension wall 131 are sealed by the fourth sealing ring 740, and the sealing fit between the cylinder body 310 and the filter element cover 100 can be conveniently and quickly realized, so that the municipal water input from the water inlet hole 113 cannot directly flow into the drainage channel from between the second fixing ring 621 and the third extension wall 131, and the water in the drainage channel cannot directly flow into the water inlet channel from between the second fixing ring 621 and the third extension wall 131, and the municipal water input from the water inlet hole 113 can only enter the water inlet channel formed by the bottom wall 112, the third extension wall 131, the first fixing member 610, the second fixing members 620, the second fixing members 300, the housing 200 and the rear housing 500, thereby avoiding series flow caused by direct communication between the water inlet channel and the drainage channel, in a specific arrangement, the number of the fourth grooves 624 may be one, two or more, and the specific number of the fourth grooves 624 is determined according to the actual conditions of the filter cartridge assembly 10, and the depth of the fourth grooves 624 extending towards the inside of the second fixing ring 621 is determined according to the size of the fourth sealing ring 740 and the actual conditions of the filter cartridge cover 100.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a filter core structure, its characterized in that, includes filter core lid, shell, fixed plate, filter core and backshell, the filter core lid includes first casing, second casing and third casing, wherein:

the shell is connected with the rear shell in a buckling mode, one end of the filter element is fixedly suspended in the shell, and the other end of the filter element is fixedly suspended in the rear shell.

2. The filter element structure according to claim 1, wherein the housing includes a cavity structure with two open ends, and includes a housing body and an annular first fixing table welded to one end of the housing body, the first fixing table is provided with a set of clamping grooves, and the outer surface of the rear shell is provided with a set of clamping blocks.

3. The filter cartridge assembly of claim 2, wherein the set of latch members comprises four latch members uniformly distributed on the outer surface of the first extension wall, one end of each latch member is provided with a guiding inclined surface, and one end of each latch member is provided with a sliding groove matched with the guiding surface.

4. The filter element structure of claim 2, further comprising a second annular fixing platform welded to the other end of the housing body, wherein the second annular fixing platform is a U-shaped groove having an opening facing inward in the radial direction of the housing body and extending away from the housing body, and the fixing plate is welded in the U-shaped groove and is fixedly connected to the filter element cover by a screw.

5. The filter element structure of claim 4, wherein the filter element comprises a cylinder, and an extension port and a filter material which are arranged in the cylinder, the extension port is fixed in the cylinder through a support wall and is inserted in the filter material, and the second extension wall is inserted in the extension port.

6. The filter cartridge arrangement of claim 5, further comprising a first securing member and a second securing member, wherein: the first fixing piece comprises a first fixing ring and a first bulge protruding out of the first fixing ring, the first fixing ring is sleeved on the barrel, and the first bulge is embedded in the rear shell; the second fixing part comprises a second fixing ring and a second protrusion protruding from the second fixing ring, a step is arranged on the second fixing ring, the step is far away from the third extending wall and abuts against the end of the bottom wall, the second fixing ring is sleeved on the outer side of the barrel, and the second protrusion is embedded in the shell.

7. The filter cartridge arrangement of claim 6, wherein the first securing member is a unitary structure with the rear housing.

8. The filter element structure according to claim 5, further comprising a first sealing ring and a second sealing ring, wherein the first extending wall is provided with a first groove arranged around the first extending wall, the first sealing ring is arranged in the first groove, the first extending wall and the outer shell are in sealing fit through the first sealing ring, the outer wall of the rear shell is provided with a second groove arranged around the rear shell, the second sealing ring is arranged in the second groove, and the rear shell and the outer shell are in sealing fit through the second sealing ring.

9. The filter cartridge arrangement of claim 7, further comprising a third gasket, wherein the second extension wall is provided with a third groove at an end thereof inserted into the extension port, the third gasket is disposed in the third groove, and the second extension wall and the extension port are sealingly engaged by the third gasket.

10. The filter cartridge arrangement of claim 9, further comprising a fourth seal ring, wherein an end of the second retaining ring proximate the bottom wall is provided with a fourth groove, the fourth seal ring being positioned within the fourth groove, the second retaining ring and the third extension wall being sealingly engaged by the fourth seal ring.