CN212924432U

CN212924432U - Water purifier

Info

Publication number: CN212924432U
Application number: CN202020927372.XU
Authority: CN
Inventors: 朱泽春; 张慧玉; 姚颖锋
Original assignee: Joyoung Co Ltd
Current assignee: Shandong Jiuchuang Home Appliance Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-04-09
Anticipated expiration: 2030-05-27

Abstract

The utility model discloses a water purifier belongs to water treatment facilities technical field, including a frame foundation, filter core and shell, a frame foundation includes mounting panel and bottom plate, the shell includes protecgulum and hou gai, the front side of mounting panel is equipped with the protecgulum and settles the district, the rear side is equipped with back lid and settles the district, the filter core is located in the protecgulum settles the district, the bottom plate is equipped with the location platform that is located back lid and settles the district with the handing-over department of mounting panel, be equipped with the location portion of counterpointing with the location platform on the inner wall of back lid, be equipped with the location fit structure between location portion and the location platform, lid arrangement district department after locating through the location fit structure with the back lid location. According to the setting position of each component of the rationally distributed purifier of the overall arrangement of settling zone, receive effectual location when making the back lid locate back lid settling zone department through the location fit structure, improve back lid and support seat complex stability, the easy drop that exists when the equipment of back lid, the defect of installation not in place are effectively solved, are favorable to improving the packaging efficiency of back lid.

Description

Water purifier

Technical Field

The utility model relates to a water treatment facilities technical field especially relates to a purifier.

Background

As the problem of water resource pollution is increasingly serious, the problem of urban water safety is increasingly prominent, and the water purifier is widely applied to improve the water quality. The water purifier is a water treatment device for filtering impurities such as solid particles, floaters, microorganisms, residual chlorine and the like in water, and can effectively improve the purity of the filtered water. The existing water purifier generally comprises components such as a support, a filter element, a water circuit board and a shell, and in order to prevent the water purifier from hurting a user and reducing the cleaning dead angle of the water purifier, the shell of the existing water purifier is mainly designed in a circular arc shape, the circular arc-shaped shell is large in demolding deformation, certain fixing difficulty exists during installation, effective positioning is difficult to perform during the assembly of the circular arc-shaped shell and the support, and the defects of easy falling off during installation, improper installation and the like exist.

SUMMERY OF THE UTILITY MODEL

In order to solve the shortcoming and the deficiency that exist among the above-mentioned prior art, the utility model provides a purifier effectively solves the location problem when the equipment between the back lid of shell and the support frame seat.

In order to realize the technical purpose, the utility model provides a pair of purifier, including support frame, filter core and shell, support frame is including erecting the mounting panel of putting and transversely arranging in the bottom plate of mounting panel bottom, the shell includes protecgulum and hou gai, the front side of mounting panel is equipped with protecgulum settling area, the rear side is equipped with back lid settling area, the filter core is located in the protecgulum settling area, the bottom plate with the handing-over department of mounting panel is equipped with and is located the location platform in the back lid settling area, be equipped with on the inner wall of back lid with the location portion of location platform counterpoint, location portion with be equipped with the location fit structure between the location platform, through the location fit structure will back lid location is located back lid settling area department.

Preferably, the location portion includes towards the convex location of mounting panel is followed, location cooperation structure including locate location platform rear side and with location is along complex constant head tank, the back lid is located when back lid arrangement region department the location is followed and is inserted in the constant head tank.

Preferably, the rear portion of the bottom plate is provided with a positioning block located on the rear side of the positioning table, the positioning block extends forwards and backwards, an opening is formed in one end, facing the positioning edge, of the positioning block, and the opening extends towards the support plate to form the positioning groove.

Preferably, the positioning blocks are arranged at intervals, a positioning gap is formed between the two positioning blocks, the positioning portion comprises a positioning boss arranged on the positioning edge, and the positioning boss is inserted into the positioning gap when the rear cover is arranged at the rear cover mounting area.

Preferably, the positioning boss is provided with a fixing hole, the bottom plate is provided with a through hole at the position of the positioning gap, the through hole is aligned with the fixing hole, and when the positioning boss is arranged at the position of the positioning gap, a screw for connecting the rear cover and the bottom plate penetrates through the through hole and is screwed in the fixing hole.

Preferably, the positioning and matching structure comprises a buckle and a clamping groove which are matched with each other, the buckle is arranged on the positioning portion, the clamping groove is arranged at the rear portion of the bottom plate, and the buckle is embedded in the clamping groove when the rear cover is arranged at the rear cover arrangement area.

Preferably, the positioning and matching structure comprises a guide block and a guide groove which are matched with each other, the guide groove is formed in the outer side of the positioning table, the guide block is arranged at the end part of the positioning part, and the guide block is inserted into the guide groove when the rear cover is arranged at the rear cover arrangement area.

Preferably, the both sides of location platform are equipped with the direction muscle that extends around, the guide way is located location platform lateral part with between the direction muscle, the guide block is connected the tip of location portion with back lid and the setting of buckling, the inner wall of guide block with be equipped with between the inner wall of back lid and supply direction muscle male slot, back lid is located when district department is settled to the back lid the direction muscle inserts in the slot.

Preferably, a positioning cavity with an opening at the bottom is formed at the positioning table, the water purifier further comprises a base, a boss matched with the positioning cavity is arranged on the base, and the boss is inserted into the positioning cavity when the base is connected to the bottom of the support base.

Preferably, a limiting portion protruding downwards is arranged on the inner wall of the positioning cavity, a limiting hole matched with the limiting portion is formed in the boss, and the limiting portion is inserted into the limiting hole when the base is connected to the bottom of the support base.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. the utility model provides a water purifier, both sides have carried out reasonable subregion around to the mounting panel according to the concrete structure of a frame seat and shell, the filter core is located in the protecgulum settling area, the water route board, connect in components such as the water route component of water route board and wiring circuit locate the back lid settling area, according to the mounted position of each component of the rationally distributed purifier of settling area, only need during the renew cartridge dismouting protecgulum can, can not settle the component in the district to the back lid and cause the influence, the component in the district can not cause the interference to the renew cartridge yet to the renew cartridge after the lid settles. Set up the location fit structure between the location portion on location platform on the bottom plate and the back lid inner wall, receive effectual location when making the back lid locate back lid arrangement area department through this location fit structure, improve back lid and support seat complex stability, the easy dropout that exists when the equipment of back lid is effectively solved, install defects such as not in place are favorable to improving the packaging efficiency of back lid.

2. Location portion covers the location edge on the inner wall for locating the back, and location platform rear side sets up and fixes a position along complex constant head tank, and when the back lid was located back lid arrangement area department, the location was followed and is inserted in the constant head tank, and the lid received vertical location after the cooperation through location edge and constant head tank makes, is favorable to improving the positional stability of back lid when the equipment.

3. The opening of locating piece rear end extends towards the mounting panel and forms the constant head tank, rationally sets up the shaping structure of constant head tank, is favorable to the structure of rationally simplifying the bottom plate when satisfying the structural requirement, also can rationally improve the structural strength of bottom plate through the locating piece.

4. Form the location space between two locating pieces, the location is along last setting and location space complex location boss, and when back lid was located back lid settling area department, the location boss was inserted and is located the location space department between two locating pieces, and the cooperation through location boss and location space makes the back lid receive the ascending location of left right side, is favorable to improving the positional stability when back lid assembles.

5. The positioning boss is provided with a fixing hole, the bottom plate is provided with a through hole at the position of the positioning gap, a screw for connecting the rear cover and the bottom plate penetrates through the through hole from bottom to top and then is screwed in the fixing hole, the stability of connection between the bottom end of the rear cover and the bottom plate is improved through the screw, and the improvement of the stability of the rear cover after assembly is facilitated.

6. The location cooperation structure still includes the buckle and the draw-in groove of mutually supporting, and when the back lid was located back lid arrangement area department, the buckle that is located on location portion imbeds the draw-in groove at bottom plate rear portion, shows that back lid installation targets in place, is convenient for improve the packaging efficiency between back lid and the support seat. The buckle can send "click" sound when embedding in the draw-in groove, and the assembly personnel of being convenient for discern whether the back lid is installed in place.

7. When the back lid was located back lid arrangement area department, the guide block of location portion tip inserted in the guide way that is located the location platform outside, and the removal position when lid adorned in back lid arrangement area department after the cooperation of guide block and guide way is injectd, also is favorable to improving the positioning stability between back lid and the support seat. In addition, the edge of back lid bottom can be made to receive effectual shape effort of preapring for an unfavorable turn of events through the cooperation of guide way and guide block, effectively avoids the outer condition of warping up and leading to back lid deformation of edge of back lid bottom.

8. The guide groove is arranged between the side part of the positioning table and the guide rib, and the forming structure of the guide groove is reasonably arranged, so that the structure of the bottom plate is reasonably simplified. Form the slot between guide block inner wall and the back lid inner wall, when back lid was located back lid arrangement area department, the direction muscle was inserted in the slot, and the cooperation through direction muscle and slot is favorable to further improving the positional stability between back lid and the support seat.

9. When the base is connected to the bottom of the bracket base, the boss on the base is inserted into the positioning cavity with an opening at the bottom, the matching position between the base and the bottom of the bracket base is effectively increased by matching the boss with the positioning cavity, and the assembly stability between the base and the bracket base is favorably improved, so that the stability of the whole machine is favorably improved.

10. When the base is connected to the bottom of the bracket base, the limiting part on the inner wall of the positioning cavity is inserted into the limiting hole on the boss, the stability of the boss in matching with the positioning cavity can be further improved through the matching of the limiting part and the limiting hole, the assembly stability between the base and the bracket base is favorably improved, and the stability of the whole machine is favorably improved.

Drawings

Fig. 1 is an exploded view of a water purifier according to an embodiment of the present invention;

fig. 2 is an exploded view of a partial structure of a water purifier according to an embodiment of the present invention;

fig. 3 is an exploded view of another partial structure of a water purifier according to an embodiment of the present invention;

fig. 4 is a schematic view of a bracket holder in a water purifier according to an embodiment of the present invention;

FIG. 5 is an enlarged view at B of FIG. 4;

fig. 6 is a schematic view of a rear cover of a water purifier according to an embodiment of the present invention;

fig. 7 is another schematic view of a rear cover of a water purifier according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of a matching portion of a base and a bracket base in a water purifier according to an embodiment of the present invention.

In the figure, 100-bracket seat, 110-bracket plate, 110 a-front cover placing area, 110 b-rear cover placing area, 111-clamping part, 112-connecting hole, 120-bottom plate, 121-positioning groove, 122-positioning block, 123-positioning gap, 124-clamping groove, 125-guiding groove, 126-guiding rib, 127-through hole, 130-positioning platform, 131-positioning cavity, 132-limiting part, 133-limiting groove, 140-top plate, 200-filter element, 300-front cover, 400-rear cover, 401-positioning edge, 402-positioning boss, 403-buckle, 404-guiding block, 405-slot, 406-fixing hole, 407-fixing rib, 408-convex buckle, 409-fixing column, 410-jack, 411-arc reinforcing rib, 412-bar strengthening rib, 510-water route board, 511-inlet pipe, 512-outlet pipe, 513-waste pipe, 520-support, 530-water inlet joint, 540-water outlet joint, 550-flowmeter, 560-waste water joint, 570-drain pipe, 580-on-off valve, 590-power terminal, 600-base, 610-boss, 611-spacing hole, 612-spacing rib.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.

Example one

As shown in fig. 1 to 8, a water purifier provided by the embodiment of the present invention includes a bracket base 100, a filter element 200 and a housing. Referring to fig. 3, the holder 100 includes a vertical holder plate 110 and a bottom plate 120 horizontally disposed at a bottom end of the holder plate 110, the housing includes a front cover 300 and a rear cover 400, a front cover installation region 110a is disposed at a front side of the holder plate 110, a rear cover installation region 110b is disposed at a rear side of the holder plate 110, and the filter element 200 is disposed in the front cover installation region 110 a. The joint of the bottom plate 120 and the support plate 110 is provided with a positioning table 130 located in the rear cover installation area 110b, the inner wall of the rear cover 400 is provided with a positioning portion aligned with the positioning table 130, a positioning fit structure is arranged between the positioning portion and the positioning table 130, and the rear cover 400 is positioned in the rear cover installation area 110b through the positioning fit structure.

According to the mounted position of each component of rationally distributed purifier in the overall arrangement of settling zone, only need during the renew cartridge dismouting protecgulum can, can not lead to the fact the influence to the component in the back lid settling zone, the component in the back lid settling zone can not lead to the fact the interference to renew cartridge yet. Set up the location fit structure between the location portion on location platform on the bottom plate and the back lid inner wall, receive effectual location when making the back lid locate back lid arrangement area department through this location fit structure, improve back lid and support seat complex stability, the easy dropout that exists when the equipment of back lid is effectively solved, install defects such as not in place are favorable to improving the packaging efficiency of back lid.

Referring to fig. 4, the front portion of the bottom plate 120 is located at the front side of the support plate 110, the rear portion of the bottom plate 130 is located at the rear side of the support plate 110, the front cover seating region 110a specifically refers to a partial region located at the front side of the support plate 110 and corresponding to a position directly above the front portion of the bottom plate, and the rear cover seating region 110b specifically refers to a partial region located at the rear side of the support plate 120 and corresponding to a position directly above the rear portion of the bottom plate.

Referring to fig. 6, the positioning portion includes a positioning edge 401 protruding toward the support plate 110, and the positioning engagement structure includes a positioning groove 121 disposed at the rear side of the positioning table 130 and engaged with the positioning edge 401. When the rear cover 400 is disposed at the rear cover seating region 110b, the positioning rim 401 is inserted into the positioning groove 121. In this embodiment, since the cross-sectional shape of the rear cover 400 in the transverse direction is substantially arc-shaped, the positioning edge 401 has an arc-shaped sheet shape. The rear portion of the bottom plate 120 is provided with a positioning block 122 located at the rear side of the positioning table 130, the positioning block 122 extends along the front-rear direction, the rear end of the positioning block 122 facing the positioning edge 401 is provided with an opening, and the opening extends towards the front of the support plate 110 to form a positioning groove 121. When the positioning edge 401 is inserted into the positioning groove 121, the rear cover 400 is positioned vertically.

Preferably, two positioning blocks 122 are arranged at intervals along the left-right direction perpendicular to the front-back direction, a positioning gap 123 is formed in a space between the two positioning blocks 122, and a positioning boss 402 matched with the positioning gap 123 is arranged on the top surface of the positioning edge 401. When the rear cover 400 is disposed at the rear cover seating region 110b, the positioning protrusion 402 is inserted into the positioning gap 123 while the positioning edge 401 is inserted into the positioning groove 121, that is, the positioning protrusion 402 is located between the two positioning blocks 122, so that the rear cover 400 is positioned in the left-right direction.

With reference to fig. 7, the positioning and fitting structure further includes a buckle 403 and a slot 124 that are fitted with each other, the buckle 403 is disposed on the positioning portion, and the slot 124 is disposed at the rear portion of the bottom plate 120. In this embodiment, the two buckles 403 are arranged at the bottom of the positioning edge 401 and are arranged at intervals in the left-right direction, correspondingly, the two clamping grooves 124 are also arranged at intervals in the left-right direction, the two clamping grooves 124 are respectively arranged at the outer sides of the two positioning blocks 122 in the left-right direction, and interference caused by the matching of the buckles and the clamping grooves to the positioning edge and the positioning groove is avoided. When the rear cover 400 is disposed at the rear cover mounting region 110b, the buckle 403 is embedded in the slot 124, and the rear cover 400 is limited in the front-rear direction by the cooperation of the buckle 403 and the slot 124. In addition, the snap 403 will click when inserted into the slot 124, which is convenient for the assembler to identify whether the rear cover 400 is installed in place.

In order to limit the installation direction of the rear cover 400 when being installed at the rear cover installation region 110b, the positioning and fitting structure further includes a guide block 404 and a guide groove 125 which are fitted to each other, the guide groove 125 is located at the outer side of the positioning table 130 in the left-right direction, and the guide block 404 is provided at the end of the positioning portion. Referring to fig. 5, in this embodiment, the rear portion of the bottom plate 120 is provided with a guide rib 126 located on the outer side of the left and right sides of the positioning table 130, the guide rib 126 extends along the front and rear directions, the front end of the guide rib 126 extends to be connected with the support plate 110, and a guide groove 125 is formed in a space between the guide rib 126 and the left and right ends of the positioning table 130. The end of the positioning edge 401 is connected with the inner wall of the rear cover 400 into a whole through a guide block 404, the guide block 404 is arranged in a bending mode, and an insertion groove 405 for inserting the guide rib 126 is formed between the inner wall of the guide block 404 and the inner wall of the rear cover 400. Rear cover 400 adorns when rear cover settling zone 110b department, rear cover 400 moves forward for mounting plate 110, guide block 404 inserts in the guide way 125, and simultaneously, direction muscle 126 inserts in the slot 405, the cooperation through guide block 404 and guide way 125 enables rear cover 400 to receive the ascending location of left and right sides, the cooperation through direction muscle 126 and slot 405 can make the edge of rear cover 400 bottom receive effectual shape effort of preapring for an unfavorable turn of events, effectively avoid the outer condition of warping of edge that rear cover 400 bottom leads to rear cover 400 to warp.

In order to secure the assembling strength between the rear cover 400 and the stand base 100, the bottom of the rear cover 400 and the base plate 120 are fixed together by screws. In this embodiment, the positioning bosses 402 and the guide blocks 404 are respectively provided with a fixing hole 406, the bottom plate 120 is provided with through holes 127 corresponding to the fixing holes 406 at the positioning gap 123 and at the front end of the guide groove 125, the rear cover 400 is positioned in the rear cover mounting region 110b, and screws for connecting the bottom of the rear cover 400 and the bottom plate 120 penetrate through the through holes 127 from bottom to top and are screwed in the fixing holes 406, so as to realize the fixed connection between the bottom of the rear cover 400 and the bottom plate 120.

In order to ensure the stability of the rear cover 400, the rear cover 400 is fixedly connected to the bracket plate 110 by a snap structure and a screw. Specifically, the top side of mounting panel 110 is equipped with the roof 140 that the ranging back formed, and the top of back lid 400 inner wall is equipped with the fixed muscle 407 of counterpointing with roof 140, all is equipped with the protruding knot 408 of several and hollow fixed column 409 in the interval on the inner wall of the vertical both sides edge of back lid 400, also is equipped with several fixed column 409 in the interval on the fixed muscle 407. Correspondingly, the side portions of the two vertical sides of the supporting plate 110 are provided with the engaging portions 111 corresponding to the convex buckles 408 and the connecting holes 112 corresponding to the fixing posts 409, and the top plate 140 is provided with the connecting holes 112 corresponding to the fixing posts 409 on the fixing ribs 407. When the rear cover 400 is disposed at the rear cover mounting region 110b, the convex buckle 408 on the rear cover 400 is buckled with the clamping portion 111 on the support plate 110, the top plate 140 abuts against the top side of the fixing rib 407, and the screw is screwed into the fixing column 409 after passing through the connecting hole 112, so as to realize the fixed assembly between the rear cover 400 and the support base 100.

Referring to fig. 8, a positioning cavity 131 with an opening at the bottom is formed at the positioning table 130, the water purifier further includes a base 600, a boss 610 protruding upwards is formed on the base 600, and the boss 610 is matched with the positioning cavity 131. When the base 600 is connected to the bottom of the support base 100, the boss 610 is inserted into the positioning cavity 131, the matching position between the base 600 and the bottom of the support base 100 is effectively increased through the matching of the boss 610 and the positioning cavity 131, the assembly stability between the base 600 and the support base 100 is favorably improved, and the stability of the whole machine placed on the ground is favorably improved.

In order to further improve the stability of the fit between the boss 610 and the positioning cavity 131, a limiting portion 132 protruding downward is disposed on the inner wall of the positioning cavity 131, and a limiting hole 611 engaged with the limiting portion 132 is disposed on the boss 610. When the base 600 is connected to the bottom of the stand base 100, the position-limiting portion 132 is inserted into the position-limiting hole 611. In this embodiment, the limiting portion 132 is a hollow limiting ring, the bottom wall of the limiting hole 611 is provided with a limiting rib 612, and the limiting portion 132 is provided with a limiting groove 133 for the limiting rib 612 to be inserted into. When the position-limiting portion 132 is inserted into the position-limiting hole 611, the position-limiting rib 612 is inserted into the position-limiting groove 133.

In this embodiment, the water purifier further includes a waterway plate 510 and a waterway member connected to the waterway plate, the waterway plate 510 is fixed to the rear side of the support plate 110 by the support 520, that is, the waterway plate 510 and the waterway member are disposed in the rear cover installation region 110 b. The water channel plate 510 is provided with a water inlet pipe 511, a water outlet pipe 512 and a waste water pipe 513 which are arranged at intervals along the left-right direction, and the water channel components comprise a water inlet joint 530, a water outlet joint 540, a flow meter 550, a waste water joint 560, a water outlet pipe 570, an on-off valve 580 and the like. The water inlet joint 530 is connected to the water inlet pipe 511, and the water inlet pipe 511 is externally connected to a water supply waterway through the water inlet joint 530. The water outlet connector 540 is connected to the water outlet pipe 512, the flow meter 550 is fixed between the water outlet pipe 512 and the water outlet connector 540, and the water filtered by the filter element 200 is output through the water outlet pipe 512 and the water outlet connector 540 for use. The waste water joint 560 is connected to the waste water pipe 513 through a drain pipe 570, the on-off valve 580 is fixed between the waste water pipe 513 and the drain pipe 570, and waste water for cleaning the filter element 200 is discharged to the outside through the waste water pipe 513 and the drain pipe 570 in a state where the on-off valve 580 is on. The water inlet connector 530, the water outlet connector 540 and the waste water connector 560 are fixedly arranged on the rear cover 400, the rear cover 400 is provided with jacks 410 for inserting the connectors, and the connectors are fixedly inserted in the corresponding jacks. In addition, the water purifier further includes power consumption elements such as a control panel and a display, and in order to supply power to the power consumption elements of the water purifier, a power terminal 590 is fixed to the rear cover 400 by a nut, and the power consumption elements are electrically connected to the power terminal 590.

In order to improve the strength of the rear cover 400, a plurality of arc-shaped reinforcing ribs 411 and a plurality of bar-shaped reinforcing ribs 412 are arranged on the inner wall of the rear cover 400 at intervals.

When the rear cover 400 and the bracket holder 100 are assembled, the rear cover 400 is positioned and mounted on the rear cover mounting region 110b through a positioning and matching structure, and then the rear cover and the bracket holder are fixed together by using screws.

When the base 600 is assembled, the base 600 is positioned and installed at the bottom of the support frame base 100, the positioning table 610 is inserted into the positioning cavity 131, the limiting portion 132 is inserted into the limiting hole 611, the limiting rib 612 is inserted into the limiting groove 133, and then the base is fixed at the bottom of the support frame base by using screws. In this embodiment, the screws connecting the bottom end of the rear cover 400 and the bottom plate 120 are simultaneously threaded through the base 600.

It is understood that the side and top of the rear cover 400 and the bracket holder 100 may be fixedly connected only by screws, so as to meet the assembly requirement. Of course, the side portion of the rear cover 400 and the bracket holder 100 may be fixedly connected only by a snap structure, so as to meet the assembly requirement.

It is understood that, in order to facilitate replacement of the filter cartridge 200, the front cover 300 and the holder base 100 are preferably fixedly assembled by a snap-fit structure.

In addition to the above preferred embodiments, the present invention has other embodiments, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope defined by the appended claims.

Claims

1. The utility model provides a water purifier, includes a frame foundation, filter core and shell, its characterized in that, the frame foundation is including erectting the mounting panel of putting and transversely arranging in the bottom plate of mounting panel bottom, the shell includes protecgulum and back lid, the front side of mounting panel is equipped with protecgulum settling area, the rear side is equipped with back lid settling area, the filter core is located in the protecgulum settling area, the bottom plate with the handing-over department of mounting panel is equipped with and is located the location platform in the back lid settling area, be equipped with on the inner wall of back lid with the location portion of location platform counterpoint, location portion with be equipped with the location fit structure between the location platform, through the location fit structure will back lid location is located back lid settling area department.

2. The water purifier as recited in claim 1, wherein said positioning portion comprises a positioning edge protruding toward said supporting board, said positioning engagement structure comprises a positioning groove disposed at a rear side of said positioning table and engaged with said positioning edge, and said positioning edge is inserted into said positioning groove when said rear cover is disposed at said rear cover placement region.

3. The water purifier as recited in claim 2, wherein a positioning block is disposed at a rear portion of said base plate and behind said positioning table, said positioning block extends forward and backward and an opening is disposed at an end of said positioning block facing said positioning edge, said opening extends toward said supporting plate to form said positioning slot.

4. The water purifier as recited in claim 3, wherein two positioning blocks are provided at an interval, a positioning gap is provided between two positioning blocks, the positioning portion comprises a positioning boss provided on the positioning edge, and the positioning boss is inserted into the positioning gap when the rear cover is provided at the rear cover installation region.

5. The water purifier as recited in claim 4, wherein a fixing hole is provided at the location of the positioning boss, a through hole is provided at the location of the positioning gap on the bottom plate, the through hole is aligned with the fixing hole, and when the positioning boss is provided at the positioning gap, a screw for connecting the rear cover and the bottom plate passes through the through hole and is screwed in the fixing hole.

6. The water purifier as recited in claim 1, wherein said positioning structure comprises a buckle and a slot, wherein said buckle is disposed on said positioning portion, said slot is disposed on the rear portion of said base plate, and said buckle is embedded in said slot when said rear cover is disposed at said rear cover placement region.

7. The water purifier according to claim 1, wherein the positioning and fitting structure comprises a guide block and a guide groove which are fitted with each other, the guide groove is disposed on an outer side of the positioning table, the guide block is disposed on an end portion of the positioning portion, and the guide block is inserted into the guide groove when the rear cover is disposed at the rear cover placement region.

8. The water purifier according to claim 7, wherein guide ribs extending forward and backward are disposed on both sides of the positioning table, the guide grooves are disposed between the side portions of the positioning table and the guide ribs, the end portions of the positioning portions and the rear cover are connected by the guide blocks and are bent, slots into which the guide ribs are inserted are disposed between inner walls of the guide blocks and inner walls of the rear cover, and the guide ribs are inserted into the slots when the rear cover is disposed at the rear cover placement region.

9. The water purifier according to any one of claims 1-8, wherein a positioning cavity with an opening at the bottom is formed at the positioning table, the water purifier further comprises a base, a boss matched with the positioning cavity is arranged on the base, and the boss is inserted into the positioning cavity when the base is connected to the bottom of the bracket base.

10. The water purifier as recited in claim 9, wherein a downwardly protruding limiting portion is disposed on an inner wall of the positioning chamber, a limiting hole is disposed on the boss for engaging with the limiting portion, and the limiting portion is inserted into the limiting hole when the base is connected to the bottom of the bracket base.