CN212222504U - Water purifying equipment - Google Patents

Abstract

The present disclosure provides a water purification unit including base, filter element group spare, filter core mount pad, shell and inner shell. The filter element mounting seat is fixedly connected with the base or integrally manufactured, and is used for fixing the filter element assembly; the first end of the shell is connected with the base; the inner shell is arranged on the inner side of the outer shell and can contain the filter element assembly, the first end of the inner shell is fixedly connected with the base, the second end of the inner shell is abutted with the second end of the outer shell, and therefore the inner shell and the base jointly clamp the outer shell in the middle along the axial direction, and therefore the movement of the outer shell in the axial direction and/or the radial direction is limited. This water purification unit that openly has above-mentioned structure can avoid having the screw on the shell and make the screw expose the condition outside, has not only reduced the technology of seting up the screw hole on water purification unit, has reduced manufacturing cost, but also has optimized water purification unit's outward appearance, has promoted user's use and has experienced.

Description

Water purifying equipment

Technical Field

The utility model belongs to the technical field of water purification unit, specifically provide a water purification unit.

Background

Along with the improvement of living standard of people, the requirement on water quality is higher and higher, and more families begin to install and use water purification equipment. Especially, the ultrafilter without waste water and with high cost performance is favored by consumers.

However, the existing ultrafilters on the market are complex to install, most of the ultrafilters are still split type filter elements (including at least 2-3 filter elements), each filter element needs to be installed and detached respectively, and the operation is complex. In addition, most ultrafilters need a large number of screws in the assembling and mounting processes, so that the production process is complex, the processing cost and the time cost are high, the filter element is difficult to mount and dismount, and the exposed screws can affect the attractiveness of the product. In addition, most of the ultrafiltration machines in the current market do not use electricity, so that most of the ultrafiltration machines do not have a filter element service life reminding function, a user can only determine the service time of the filter element by means of memory of the user and change the filter element, the situation that the body health of the user is influenced by the service life of the filter element is caused, the filter element is changed before the service life is reached, the utilization rate of the filter element is reduced, and the replacement cost of the filter element is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem among the prior art, for solve present water purification unit in the market promptly because of using more screw to lead to some screws to expose outside influencing the pleasing to the eye problem of water purification unit, this disclosure provides a water purification unit, and this water purification unit includes:

a base;

the filter element mounting seat is fixedly connected with the base or integrally manufactured with the base, and is used for fixing the filter element assembly;

a housing, a first end of the housing being connected to the base;

the filter element assembly comprises an inner shell, wherein the inner shell is arranged on the inner side of the outer shell and can accommodate the filter element assembly, a first end of the inner shell is fixedly connected with the base, a second end of the inner shell is abutted against a second end of the outer shell, and therefore the inner shell and the base jointly clamp the outer shell in the middle along the axial direction, so that the movement of the outer shell in the axial direction and/or the radial direction is limited.

Optionally, a first engaging structure is disposed on the first end of the housing; the base is provided with a second clamping structure matched with the first clamping structure; the shell and the base are clamped together through the first clamping structure and the second clamping structure.

Optionally, the base includes a bottom plate, a side plate and a reinforcing rib, the bottom plate, the side plate and the reinforcing rib are fixedly connected or integrally formed, the side plate is annular, and the side plate is connected with the outer circumferential surface of the bottom plate through one axial end of the side plate; the reinforcing ribs are arranged on the inner side of the side plates; the second engaging structure is formed on the rib or the side plate, or between the rib and the side plate.

Optionally, a sink groove is formed in the second end of the housing, and a notch is formed in the edge of the sink groove; the second end of the inner shell is provided with an annular flange, the annular flange is positioned on the outer side of the inner shell, and the annular flange extends towards the outer side surface of the inner shell to form a rotation stopping rib matched with the notch; in an assembled state of the water purifying apparatus, the rotation stopping rib is embedded into the notch, and the annular flange is embedded into the sinking groove and abuts against the bottom wall of the sinking groove, so that a pre-tightening force for fixing the housing on the base is provided between the annular flange and the bottom wall of the sinking groove.

Optionally, the water purifying apparatus further comprises a top cover for closing the second end of the housing, the top cover and the housing are detachably connected together, and the top cover is provided with a refill replacement reminding device.

Optionally, the top cover is provided with an installation groove recessed towards the inner shell, the core replacement reminding device is arranged in the installation groove, the edge of the top cover is overlapped and filled between the side wall of the sinking groove and the annular flange, and a first buckle for fixing the top cover is arranged between the side wall of the sinking groove and the edge of the top cover.

Optionally, the core-changing reminding device comprises a mounting box, a display module with a timing function is arranged in the mounting box, the outer contour of the mounting box is matched with the inner contour of the mounting groove, and a second buckle is arranged between the mounting box and the mounting groove.

Optionally, the base is provided with a hole column which is fixedly inserted into the bottom of the inner shell, the side wall of the outer shell and/or the base is provided with a first opening through which the water pipe and/or the joint of the filter element mounting seat extend, and the bottom of the inner shell is provided with a second opening through which the filter element mounting seat extends.

Optionally, the water purifying apparatus further comprises the filter element assembly, the filter element assembly is located on the inner side of the inner shell in the radial direction, and the filter element assembly is detachably connected with the filter element mounting seat through one end of the filter element assembly in the axial direction.

Optionally, aforementioned filter element group spare axial ascending other end has the spacing concave station that is used for holding aforementioned top cap, aforementioned filter element group spare and aforementioned filter core mount pad threaded connection, and aforementioned spacing concave station lateral wall is equipped with the protruding muscle of being convenient for twist reverse the operation to aforementioned filter element group spare.

As can be appreciated by those skilled in the art, the dishwashing appliance of the present disclosure has the following benefits:

1. through setting up shell and inner shell to the first end that makes the shell is connected with the base, makes the first end and the base fixed connection of inner shell, makes the second end butt of the second end of inner shell and shell, and consequently catches on the second end of shell, makes the inner shell can compress tightly the shell to the base along the axial, thereby tightly fixes the shell to the base. Therefore, the water purification unit of this disclosure can avoid having the screw on the shell and make the screw expose the condition outside, has not only reduced the technology of seting up the screw hole on water purification unit, has reduced manufacturing cost, but also has optimized water purification unit's outward appearance, has promoted user's use and has experienced.

2. The first clamping structure is arranged at the first end of the shell, the second clamping structure matched with the first clamping structure is arranged on the base, so that the shell and the base can be clamped together through the first clamping structure and the second clamping structure, the relative position between the shell and the base is limited along the radial direction of the shell, and the shell is prevented from moving relative to the base along the radial direction.

3. Through being provided with heavy groove on the second end at the shell, set up annular flange on the second end of inner shell for annular flange can be embedded into heavy groove and offset with the diapire that sinks the groove, not only can make the inner shell have limiting displacement to the shell in the axial, can also make the removal that the inner shell restricted the outer shell second end in the footpath, thereby make inner shell and base can fix the shell firmly.

4. Set up the breach through the edge at the heavy groove, set up the only muscle that changes with this breach looks adaptation on annular flange for the only muscle is embedded into in the breach, and consequently makes between inner shell and the shell along circumference fixed together, prevents that outer shell and inner shell from taking place relative rotation.

5. By arranging the filter element reminding device, the water purifying equipment can automatically remind a user of changing the filter element, and the situation that the body health of the user is influenced due to the over-service life of the filter element is avoided; and the situation that the filter element is replaced before the service life is reached is avoided, so that the filter element is effectively utilized, and the replacement cost of the filter element is reduced.

6. Through making the display module who trades core reminding device including having the timing function for water purification unit can be through this service time of trading core reminding device record filter core, and still need not switch on power supply, only need for filter core reminding device configuration a battery can, simple structure not only, with low costs, but also can not occupy water purification unit too much space.

7. Through setting up the hole post that the grafting is fixed in the inner shell bottom at the base for the screw can pass this hole post and fix base and inner shell together, and then makes the screw hide by the base when water purification unit uses, has optimized water purification unit's outward appearance.

8. Through setting up spacing concave station on filter element group spare, set up the protruding muscle that supplies the user operation in spacing concave station, not only can realize filter element group spare normal installation and dismantlement through this protruding muscle, but also avoided protruding muscle to occupy too much radial space, increase water purification unit's radial dimension's situation.

Drawings

Preferred embodiments of the present disclosure are described below with reference to the accompanying drawings, in which:

fig. 1 is an exploded view of a water purifying apparatus according to a preferred embodiment of the present disclosure;

FIG. 2 is an isometric view of a water purification unit in a preferred embodiment of the present disclosure;

FIG. 3 is a sectional view of a water purifying apparatus in a preferred embodiment of the present disclosure;

FIG. 4 is an isometric view of the base of the water purification unit in a preferred embodiment of the present disclosure;

FIG. 5 is an axial view of an inner housing of a water purifying device in accordance with a preferred embodiment of the present disclosure;

FIG. 6 is a cross-sectional view of the outer shell, inner shell and base in an assembled condition in a preferred embodiment of the present disclosure;

FIG. 7 is an enlarged view of portion A of FIG. 6;

FIG. 8 is an enlarged view of portion B of FIG. 6;

FIG. 9 is a schematic view of a disclosed preferred embodiment showing the mating arrangement between the cartridge assembly and the cartridge mounting block;

FIG. 10 is a cross-sectional view of the cartridge assembly in the preferred embodiment disclosed;

fig. 11 is a sectional view (on state) of a partial structure of a water stopping assembly in a preferred embodiment of the present disclosure;

fig. 12 is a sectional view (broken state) of a partial structure of a water stopping assembly in a preferred embodiment of the present disclosure.

List of reference numerals:

1. a housing; 11. a first engaging structure; 12. sinking a groove; 13. a first opening;

2. an inner shell; 21. an annular flange; 22. stopping rotating the ribs; 23. a second opening; 24. a threaded bore post;

3. a base; 31. a second engaging structure; 32. a base plate; 33. a side plate; 34. reinforcing ribs; 35. a pore column;

4. a filter element assembly; 41. a limiting concave platform; 411. a card slot; 42. a rib is protruded; 43. a first helical tooth; 44. a water stop assembly; 441. a support; 4411. a first channel; 442. a valve core; 443. a spring; 444. a valve housing; 4441. an inner valve housing; 4442. an outer valve housing; 445. a valve seat;

5. a filter element mounting seat; 51. a water pipe; 52. a second helical tooth; 53. an annular column;

6. a top cover; 61. mounting grooves;

7. a core replacement reminding device; 71. mounting a box; 72. a display module; 73. pressing a key;

8. and (4) screws.

Detailed Description

It should be understood by those skilled in the art that the embodiments described below are only preferred embodiments of the present disclosure, and do not mean that the present disclosure can be implemented only by the preferred embodiments, which are merely for explaining the technical principles of the present disclosure and are not intended to limit the scope of the present disclosure. All other embodiments that can be derived by one of ordinary skill in the art from the preferred embodiments provided by the disclosure without undue experimentation will still fall within the scope of the disclosure.

It should be noted that in the description of the present disclosure, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as appropriate.

As shown in fig. 1 to 3, in a preferred embodiment of the present disclosure, the water purifying apparatus includes an outer housing 1, an inner housing 2, a base 3, a filter element assembly 4, a filter element mounting seat 5, a top cover 6, a core change reminder 7, and a screw 8. Wherein, the outer shell 1 is established in the outside of inner shell 2 to the first end (the lower extreme of outer shell 1 in fig. 3) of outer shell 1 is connected (specifically for the butt) with base 3, and the first end (the lower extreme of inner shell 2 in fig. 3) of inner shell 2 passes through screw 8 and base 3 fixed connection together. In the assembled state, the second end of the inner shell 2 (the upper end of the inner shell 2 in fig. 3) abuts against the second end of the outer shell 1 (the upper end of the outer shell 1 in fig. 3), and thus the inner shell 2 and the base 3 together clamp the outer shell 1 axially in between, thereby limiting the movement of the outer shell 1 in the axial and/or radial direction. The cartridge assembly 4 is located inside the inner housing 2 and is removably connected to the cartridge mount 5. The filter element mounting seat 5 is fixedly connected with the base 3 through a screw 8. A top cover 6 is removably mounted to the top of the outer and inner housings 1, 2 in fig. 3 for concealing the filter cartridge assembly 4. The refill change reminder 7 is fixedly mounted to the top cover 6 for recording the service time of the filter element assembly 4 so that a user can access the service time of the filter element assembly 4 through the refill change reminder 7.

It can be understood by those skilled in the art that the case of screws provided on the outer housing 1 is avoided and the appearance of the water purifying apparatus is optimized by clamping the outer housing 1 with the inner housing 2 and the base 3. Meanwhile, due to the arrangement of the filter element reminding device 7, the water purifying equipment can automatically remind a user of changing the filter element, and the situation that the body health of the user is influenced due to the over-service life of the filter element is avoided; and the situation that the filter element is replaced before the service life is reached is avoided, so that the filter element is effectively utilized, and the replacement cost of the filter element is reduced.

As shown in fig. 1, a first end of the outer shell 1 is provided with a first engaging structure 11 matching with the base 3, and a second end of the outer shell 1 is provided with a sinking groove 12 matching with the second end of the inner shell 2. Further, a first opening 13 matched with the filter element mounting seat 5 is arranged at the first end of the shell 1.

As can be seen in fig. 1, the first snap-in structure 11 is an annular rim on the first end of the housing 1. Besides, the skilled person can also arrange the first engaging structure 11 to be any other feasible structure, such as a rib, a groove, a cylinder, etc., as required.

As shown in fig. 4, the base 3 is provided with a second engaging structure 31 matching with the first engaging structure 11. Further, the base 3 includes a bottom plate 32, a side plate 33, a reinforcing rib 34, and a hole pillar 35, wherein the side plate 33 is provided in a ring shape, and the side plate 33 is in contact with the outer peripheral surface of the bottom plate 32 through one axial end thereof (the lower end of the side plate 33 in fig. 4). The reinforcing ribs 34 are provided on the inner side of the side plate 33. The second engaging structure 31 is a catch groove formed between the bead 34 and the side plate 33, or one skilled in the art may form the second engaging structure 31 on the bead 34 or the side plate 33 as needed. The hole pillar 35 is fixedly connected or integrally formed with the bottom plate 32, and the hole of the hole pillar 35 is a through hole completely penetrating the hole pillar 35 and the bottom plate 32, so that the screw 8 can be screwed with the inner shell 2 or the cartridge mounting base 5 through the base 3.

As shown in fig. 1 and 4, the base 3 is provided with an opening corresponding to the first opening 11 of the housing 1, and in the assembled state of the water purifying apparatus, the opening of the first base 3 is butted against the first opening 11 to form a circular hole for allowing the water pipe 51 and/or the joint of the cartridge mounting seat 5 to extend. Furthermore, one skilled in the art may also provide openings in only one of base 3 and housing 1 that allow water tube 51 and/or fittings of cartridge mount 5 to extend, as desired.

As shown in fig. 5 to 8, an annular flange 21 is provided on the second end of the inner shell 2, the annular flange 21 being located outside the inner shell 2; the annular flange 21 has a rotation stop rib 22 extending toward the outer side surface of the inner casing 2, and the rotation stop rib 22 is fitted into a notch (not shown) formed in the edge of the sink 12 of the outer casing 1. The bottom of the inner shell 2 is provided with a second opening 23 through which the filter element mounting seat 5 penetrates, and the bottom of the inner shell 2 is also provided with a threaded hole column 24 matched with the screw 8.

As shown in fig. 6 to 8, in a state that the outer shell 1, the inner shell 2, the base 3, and the filter element mounting seat 5 are assembled, the first end of the outer shell 1 is clamped with the second clamping structure 31 on the base 3 through the first clamping structure 11; the threaded studs 24 on the first end of the inner shell 2 are aligned with the studs 35 on the base 3 and the screws 8 are screwed through the respective studs 35 into the threaded studs 24 and thereby fixedly connect the inner shell 2 to the base 3. An annular flange 21 on the second end of the inner shell 2 is inserted into the countersunk groove 12 on the second end of the outer shell 1, and a detent rib 22 on the inner shell 2 is inserted into a notch on one side of the countersunk groove 12. So that the combination of the inner shell 2, the base 3 and the screws 8 secures the outer shell 1 to the base 3 in axial, radial and axial directions. Further, cartridge mounting base 5 is also fixedly coupled to base 3 by screws 8, and water pipe 51 of cartridge mounting base 5 is protruded to the outside of outer housing 1 through first opening 13 formed on outer housing 1, and the top of cartridge mounting base 5 is also inserted into inner housing 2 through second opening 23 formed on inner housing 2.

As shown in fig. 1, 3 and 9, the filter element assembly 4 includes a retaining recess 41, a rib 42 and a first helical tooth 43. Wherein a retaining pocket 41 is located on top of the filter cartridge assembly 4, the retaining pocket 41 being capable of receiving at least a portion of the top cover 6. Ribs 42 are provided on the inner side of the limit recess 41 for the user to hold, thereby enabling the rotation of the core assembly 4. The first helical teeth 43 are arranged at the water inlet and outlet at the bottom of the filter element assembly 4. The inside of the cartridge mounting 5 is provided with a second helical tooth 52 matching the first helical tooth 43 so that the cartridge assembly 4 can be screwed onto the cartridge mounting 5 by the combination of the first helical tooth 43 and the second helical tooth 52.

As shown in fig. 10-12, the filter cartridge assembly 4 further includes a water stop assembly 44. In a state where the cartridge assembly 4 is screwed to the cartridge mounting base 5, the water stop assembly 44 is pushed open by an annular post 53 (shown in fig. 9) inside the cartridge mounting base 5, thereby bringing the cartridge assembly 4 into communication with the cartridge mounting base 5. Under the state that filter element group spare 4 and filter core mount pad 5 separate, stagnant water subassembly 44 can automatic switch to the off-state, avoids the rivers play of filter element group spare 4. Specifically, the water stop assembly 44 includes a poppet 441, a spool 442, a spring 443, a valve housing 444, and a valve seat 445.

With continued reference to fig. 10-12, the bracket 441 is disposed at the bottom end of the filter cartridge assembly 4, and the bracket 441 has a first channel 4411 formed therein. Specifically, the holder 441 is fixedly disposed within a housing (not labeled in the drawings) of the filter cartridge assembly 4.

With continued reference to fig. 10-12, the spool 442 is disposed at the bottom end of the support 441, and the spool 442 and the support 441 are integrally formed, or one skilled in the art may fixedly connect the spool 442 and the support 441 together, as desired.

The valve seat 445 is disposed at the bottom end of the filter cartridge assembly 4 as shown in fig. 10, and specifically, the valve seat 445 is integrally formed with the housing of the filter cartridge assembly 4, or the valve seat 445 and the housing of the filter cartridge assembly 4 may be fixedly attached together as desired by those skilled in the art. Further, although not shown in the drawings, a second passage is formed in the valve seat 445, and the valve seat 445 is located radially outside the spool 442.

With continued reference to fig. 10-12, a valve sleeve 444 is disposed radially between the spool 442 and the valve seat 445 and is capable of sliding axially. Valve sleeve 444 includes an inner valve sleeve 4441 and an outer valve sleeve 4442 that are fixedly attached or integrally formed. Wherein the outer valve sleeve 4442 and the valve seat 445 can abut together in a sealing manner, thereby closing the second passage. The outer valve sleeve 4442 is also in a sealing sliding connection with the carrier 441 via a sealing ring, and the inner valve sleeve 4442 can also be in a sealing abutment with the valve spool 442 via a sealing ring and thus close the first channel 4411.

With continued reference to fig. 10-12, a spring 443 is axially disposed between the cage 441 and the valve sleeve 444 and is capable of driving the valve sleeve 444 to slide and thereby close the first channel 4411 and the second channel. Specifically, one end of the inner valve sleeve 4441, which is away from the bracket 441, is coupled to an inner wall of the outer valve sleeve 4442, a gap (not shown) is provided between an outer side of the inner valve sleeve 4441 and an inner side of the outer valve sleeve 4442, the spring 443 is inserted into the gap and contacts with a coupling portion between the inner valve sleeve 4441 and the outer valve sleeve 4442, and the other end of the spring 443 contacts with the bracket 441.

Although not shown in the drawings, the cartridge mounting base 5 is provided with a third passage matching the first passage 4411 and a fourth passage matching the second passage 4451.

The operation principle of the water stop assembly 44 will be briefly described with reference to fig. 11 and 12.

As shown in fig. 11, filter cartridge module 4 is sealingly connected to cartridge mount 5, and annular post 53 on cartridge mount 5 pushes valve sleeve 444 upward, placing first channel 4411 in communication with the third channel and second channel 4451 in communication with the fourth channel.

As shown in fig. 12, in a state where the cartridge module 4 is separated from the cartridge mounting seat 5, the spring 443 moves the valve sleeve 442 to the lowermost position, and the valve sleeve 442 abuts against the inner valve sleeve 4441 via the seal ring, thereby closing the first passage 4411; at the same time, the outer valve sleeve 4442 abuts against the inner wall of the valve seat 445 by means of the sealing ring and thus closes the second passage 4451.

Returning to continue to refer to fig. 1 to 3, the top cover 6 is provided with an installation groove 61 recessed towards the inner shell 2, and the core replacement reminding device 7 is arranged in the installation groove 61. The top cover 6 is overlapped and filled between the side wall of the sink 12 of the outer shell 1 and the annular flange 21 of the inner shell 2. And, a first snap (not shown in the figure) for fixing the top cover 6 is arranged between the side wall of the sinking groove 12 and the edge of the top cover 6, specifically, the first snap is a protrusion arranged on one side of the inner shell 2 on the surface of the top cover 6. Further, the top of the limiting boss 41 of the filter element assembly 4 is provided with a slot 411 matched with the protrusion. In the assembled state of the water purifying apparatus, the protrusion is inserted into the catching groove 411. In addition, in the case that the top cover 6 can be fixed along the circumferential direction, the first catch and the catch slot 411 may be replaced by any other feasible structure, such as two magnets, one magnet and one iron block.

As shown in fig. 1, the core replacement reminding device 7 includes a mounting box 71, a display module 72 and a key 73. The display module 72 has a timer function and is located in the mounting case 71, and the key 73 is fitted into a through hole formed in the mounting case 71 and abuts against a control key (not shown) on the display module 72. Further, the outer contour of the mounting box 71 is matched with the inner contour of the mounting groove 61, and a second buckle (not labeled in the figure) is arranged between the mounting box 71 and the mounting groove 61. Specifically, a convex clip (a part of the second clip) is provided on the outer side of the mounting box 71, and a concave catching groove (another part of the second clip) is provided on the side wall of the mounting groove 61. In the assembled state, the raised snap fits into the recessed groove.

Based on the foregoing description, it can be understood by those skilled in the art that the preferred embodiment of the present disclosure fixedly connects the inner casing 2 and the base 3 together by the screws 8, axially disposes the outer casing 1 between the inner casing 2 and the base 3, and causes the inner casing 2 and the base 3 to clamp the outer casing 1 such that the outer casing 1, the inner casing 2, and the base 3 are fixed together. In the in-process that water purification unit used, base 3 can hide whole screw 8 in the bottom, prevents that screw 8 from exposing outside, has optimized water purification unit's outward appearance. Simultaneously owing to reduced the setting of screw for water purification unit is all very convenient at production, equipment, still the in-process of dismantling, has reduced manufacturing cost, has promoted user's the core operation of trading and has experienced. Furthermore, the user can be reminded of replacing the filter element in time through the filter element replacement reminding device 7, and the use efficiency of the filter element is guaranteed on the premise that the filter element can be replaced in time.

As a modified example of the preferred embodiment of the present disclosure, a person skilled in the art may arrange an annular plate inside the first end of the outer shell 1 and make the inner diameter of the annular plate smaller than the outer diameter of the inner shell 2, as required, so that the first end of the inner shell 2 can press the annular plate against the base 3 in an assembled state of the water purifying apparatus, thereby fixing the outer shell 1 to the base 3.

So far, the technical solutions of the present disclosure have been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present disclosure is not limited to only these specific embodiments. The technical solutions in the above embodiments can be split and combined, and equivalent changes or substitutions can be made on related technical features by those skilled in the art without departing from the technical principles of the present disclosure, and any changes, equivalents, improvements, and the like made within the technical concept and/or technical principles of the present disclosure will fall within the protection scope of the present disclosure.

Claims (10)

1. A water purification unit, its characterized in that, water purification unit includes:

a base;

the filter element mounting seat is fixedly connected with the base or integrally manufactured with the base, and is used for fixing the filter element assembly;

a housing, a first end of the housing being connected to the base;

an inner housing disposed inside the outer housing and capable of receiving the filter element assembly, a first end of the inner housing fixedly connected to the base and a second end of the inner housing abutting a second end of the outer housing, and such that the inner housing and the base together axially sandwich the outer housing to limit axial and/or radial movement of the outer housing.

2. The water purification apparatus of claim 1, wherein the first end of the housing is provided with a first snap-fit structure;

a second clamping structure matched with the first clamping structure is arranged on the base;

the shell and the base are clamped together through the first clamping structure and the second clamping structure.

3. The water purifying apparatus of claim 2, wherein the base includes a bottom plate, a side plate and a reinforcing rib which are fixedly connected or integrally formed,

the side plate is annular, and is connected with the peripheral surface of the bottom plate through one axial end of the side plate;

the reinforcing ribs are arranged on the inner sides of the side plates;

the second engaging structure is formed on the reinforcing rib or the side plate, or between the reinforcing rib and the side plate.

4. The water purification apparatus of claim 2, wherein a sink is provided on the second end of the housing, and a notch is provided at an edge of the sink;

an annular flange is arranged at the second end of the inner shell and is positioned on the outer side of the inner shell, and a rotation stopping rib matched with the notch extends towards the outer side surface of the inner shell;

when the water purifying equipment is assembled, the rotation stopping ribs are embedded into the notches, the annular flange is embedded into the sunken groove and abuts against the bottom wall of the sunken groove, and therefore pre-tightening force for fixing the shell on the base is formed between the annular flange and the bottom wall of the sunken groove.

5. The water purification apparatus of claim 4, further comprising a cap for closing the second end of the housing, the cap being removably connected to the housing, the cap being provided with a refill replacement reminder.

6. The water purifying apparatus according to claim 5, wherein the top cover is provided with an installation groove recessed towards the inner shell, the core replacement reminding device is arranged in the installation groove, the edge of the top cover is overlapped and filled between the side wall of the sinking groove and the annular flange, and a first buckle for fixing the top cover is arranged between the side wall of the sinking groove and the edge of the top cover.

7. The water purifying device of claim 6, wherein the core-changing reminding device comprises a mounting box, a display module with a timing function is arranged in the mounting box, the outer contour of the mounting box is matched with the inner contour of the mounting groove, and a second buckle is arranged between the mounting box and the mounting groove.

8. The water purifying device of any one of claims 1 to 7, wherein the base is provided with a hole column inserted and fixed at the bottom of the inner shell, the side wall of the outer shell and/or the base is provided with a first opening for the water pipe and/or the joint of the filter element mounting seat to extend out, and the bottom of the inner shell is provided with a second opening for the filter element mounting seat to penetrate out.

9. The water purifying apparatus of claim 6 or 7, further comprising the cartridge assembly, which is located radially inside the inner housing, and which is detachably coupled with the cartridge mounting seat by one end thereof in an axial direction.

10. The water purifying apparatus of claim 9, wherein the other end of the filter element assembly in the axial direction is provided with a limiting concave platform for accommodating the top cover, the filter element assembly is in threaded connection with the filter element mounting seat, and the side wall of the limiting concave platform is provided with a convex rib for facilitating the twisting operation of the filter element assembly.

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