CN217015680U - Filter element and water purification equipment - Google Patents

Abstract

The utility model relates to the field of water purifying and drinking equipment, and provides a filter element and water purifying equipment. The filter element includes: the outer side surface of the shell is provided with a first joggle joint; the first cover body is arranged at one end of the shell in a covering mode; the second cover body is detachably arranged on the outer side of the first cover body and is provided with a second joggle part, and the first joggle part is matched with the second joggle part in shape so as to limit the rotation of the second cover body; one of the first joggle part and the second joggle part is a positioning bulge, and the other joggle part is a positioning groove. According to the filter element provided by the utility model, the assembly of the second cover body is convenient, the second cover body can cover the first cover body, so that the whole structure is attractive and elegant, in addition, the positioning of the second cover body can be realized by the positioning bulge and the positioning groove, the second cover body is prevented from rotating randomly, and the stability of the structure is ensured.

Description

Filter core and water purification unit

Technical Field

The utility model relates to the technical field of water purifying and drinking equipment, in particular to a filter element and water purifying equipment.

Background

With the pursuit of quality of life, the quality of drinking water is attracting much attention. Reverse osmosis water purification units are becoming more popular because of the fresher, more sanitary and safer purified water produced by them. Tap water has higher solubility solid, and the reverse osmosis filter core can block a large amount of ions in raw water in front of the reverse osmosis membrane under the action of the booster pump, so that the solubility solid of water passing through the reverse osmosis membrane meets the standard of direct drinking water. In the related art, the positioning structure of the cover body is complicated, and the stable installation of the cover body cannot be ensured.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the filter element is convenient to assemble the second cover body, the second cover body can cover the first cover body, the structure is integrally attractive and elegant, in addition, the positioning of the second cover body can be realized through the positioning protrusions and the positioning grooves, the second cover body is prevented from rotating randomly, and the stability of the structure is ensured.

The utility model also provides a water purifying device.

A filter cartridge according to an embodiment of the first aspect of the utility model comprises:

the first cover body is arranged at one end of the shell in a covering mode, and a first joggle joint is arranged on the outer side face of the shell;

the second cover body is detachably arranged on the outer side of the first cover body and is provided with a second joggle part, and the first joggle part is matched with the second joggle part in shape so as to limit the rotation of the second cover body.

According to the filter element provided by the embodiment of the utility model, the second cover body is detachably arranged on the outer side of the first cover body, so that the second cover body can be conveniently assembled, and the second cover body can cover the first cover body, so that the whole structure is attractive and elegant.

According to one embodiment of the utility model, the first joggle joint is a positioning protrusion extending along the length direction of the shell, and the second joggle joint is a positioning groove;

or, the first joggle joint is a positioning groove extending along the length direction of the shell, and the second joggle joint is a positioning bulge.

According to one embodiment of the utility model, the positioning groove is a T-shaped positioning groove, and one end of the positioning protrusion facing the positioning groove is T-shaped.

According to an embodiment of the present invention, a third positioning element is disposed on the first cover, a fourth positioning element is further disposed on the second cover, and the third positioning element and the fourth positioning element cooperate to limit the second cover from sliding in the length direction of the housing.

According to an embodiment of the present invention, the third positioning element is a first convex rib with an arc shape, and the first convex rib extends along the outer edge of the first cover body;

the fourth positioning piece is an arc-shaped second convex rib, the second convex rib is arranged on the inner surface of the second cover body and is parallel to the first convex rib, and the first convex rib and the second convex rib are mutually buckled.

According to an embodiment of the present invention, the first ribs and the second ribs are respectively a plurality of groups corresponding to one another, all the first ribs are arranged at intervals along the outer edge of the first cover and are located at the same height of the first cover, and all the second ribs are located at the same height of the second cover;

alternatively, the first rib and the second rib are respectively annular.

According to one embodiment of the utility model, the first rib is formed with a first guide surface and the second rib is formed with a second guide surface;

the first guide surface and the second guide surface are adapted to cooperate to guide the installation of the first cover and the second cover.

According to one embodiment of the utility model, the housing is formed with a containing cavity, one end of the housing is provided with a mounting part, and the mounting part is formed with a first water inlet, a first water outlet, a second water inlet and a second water outlet which are communicated with the containing cavity;

the filter element of the filter cartridge comprises:

the first filtering component is arranged in the accommodating cavity, the first filtering component is of a hollow structure, one of the first water inlet and the first water outlet is communicated with the outer side of the first filtering component in a fluid mode, and the other one of the first water inlet and the first water outlet is communicated with the inner side of the first filtering component in a fluid mode;

the second filter component is arranged in the accommodating cavity and is positioned at one side of the mounting part, the first filter component is far away from the mounting part, the second filter component is of a hollow structure, the second water inlet is communicated with one of the fluid of the second water outlet in the outer side of the second filter component, and the other fluid is communicated with the inner side of the second filter component.

According to one embodiment of the utility model, the filter cartridge further comprises:

the handle part is connected with the second cover body, and the second cover body is provided with an avoiding groove suitable for placing the handle part.

According to a second aspect of the utility model, a water purification apparatus comprises a housing and a filter element according to the first aspect of the utility model, the filter element being disposed in the housing.

The effect of the water purifying apparatus according to the embodiment of the present invention is similar to that of the filter element of the first aspect of the present invention, and is not described herein again.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a filter cartridge provided in accordance with an embodiment of the present invention;

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

FIG. 3 is a schematic diagram of a filter cartridge according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic illustration of the flow of water within a cartridge provided by an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a housing provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a housing provided by an embodiment of the present invention;

FIG. 8 is a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 7;

FIG. 10 is a schematic view of a filter cartridge of an embodiment of the present invention with the housing removed;

FIG. 11 is a cross-sectional view taken along line D-D of FIG. 10;

FIG. 12 is a schematic perspective view of a first endcap provided in accordance with an embodiment of the present invention;

FIG. 13 is a cross-sectional view of a first endcap provided in accordance with an embodiment of the present invention;

fig. 14 is a perspective view of a first inner case provided in an embodiment of the present invention;

FIG. 15 is a cross-sectional view of a first inner housing provided in accordance with an embodiment of the present invention;

fig. 16 is a schematic perspective view of a second inner case provided in accordance with an embodiment of the present invention;

FIG. 17 is a cross-sectional view of a second inner housing provided in accordance with an embodiment of the present invention;

FIG. 18 is a schematic structural view of an inner shell assembly provided in accordance with an embodiment of the present invention;

FIG. 19 is a cross-sectional view of an inner shell assembly provided by an embodiment of the present invention;

FIG. 20 is a perspective view of a second endcap provided in accordance with an embodiment of the present invention;

FIG. 21 is a cross-sectional view of a second endcap provided in accordance with an embodiment of the present invention;

FIG. 22 is a schematic perspective view of a third endcap provided in accordance with an embodiment of the utility model;

fig. 23 is an exploded view of a water stop valve provided in accordance with an embodiment of the present invention;

FIG. 24 is a cross-sectional view of a water stop valve provided by an embodiment of the utility model;

fig. 25 is a perspective view of the first cover according to the embodiment of the present invention;

fig. 26 is a schematic structural view of a first cover according to an embodiment of the present invention;

fig. 27 is a perspective view of a second cover according to an embodiment of the present invention;

fig. 28 is a schematic structural diagram of a second cover according to an embodiment of the present invention;

FIG. 29 is a sectional view taken along line E-E of FIG. 26;

fig. 30 is a perspective view schematically illustrating a handle according to an embodiment of the present invention.

Reference numerals:

1. a housing; 11. an installation part; 12. a first cover body; 121. a first rib; 122. a first guide surface; 13. a second cover body; 131. a positioning groove; 132. a second convex rib; 133. a second guide surface; 134. an avoidance groove; 14. a third cover body; 15. positioning a projection; 101. a first chamber; 102. a second chamber; 103. a first water inlet; 104. a first water outlet; 105. a second water inlet; 106. a second water outlet; 107. a first flow passage; 108. a second flow passage; 109. a third flow path; 110. a fourth flow path; 21. a first end cap; 211. a first support; 212. a first mounting groove; 22. a first filter element; 31. a second end cap; 311. a water outlet pipe section; 312. a cover section; 313. a water inlet pipe section; 314. a third support member; 315. a second mounting groove; 32. a second filter element; 33. a third end cap; 41. a first inner case; 411. a first portion; 412. a second portion; 413. a second support member; 42. a second inner case; 51. a water stop valve; 52. a seal ring; 53. a handle part; 5140. a water stop valve; 5142. a valve housing; 5144. a valve cover; 5146. a valve core; 5148. an elastic member; 5150. contacting the pressing piece; 5152. a reinforcing portion; 5154. a first guide member; 5156. a second guide member; 5158. a first positioning groove; 5160. a spool seal; 5162. an inclined surface; 5164. a second positioning groove; 5166. a valve housing sealing member; 5168. a blocking portion.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. 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.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention may be understood as specific cases by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The filter element according to the first aspect of the present invention is described below with reference to the accompanying drawings, it should be noted that the filter element of the present invention may be applied to water treatment equipment such as a water purifier or a water dispenser, and the application scenario of the filter element of the present invention is not particularly limited.

As shown in fig. 1 to 30, a filter cartridge according to an embodiment of the present invention includes an outer housing 1, an inner housing assembly, a first filter member, and a second filter member.

The shell 1 is formed with and holds the chamber (not shown in the figure), and the one end of shell 1 is equipped with installation department 11, and installation department 11 is formed with and communicates in first water inlet 103, first delivery port 104, second water inlet 105 and the second delivery port 106 that holds the chamber.

The inner shell subassembly is located and is held the intracavity, and the inner shell subassembly is suitable for will holding the chamber and divide into first cavity 101 and second cavity 102, and first water inlet 103 and first delivery port 104 communicate with first cavity 101, and second delivery port 106 and second water inlet 105 communicate with second cavity 102.

The first filter component is arranged in the first chamber 101 and has a hollow structure, and the second filter component is arranged in the second chamber 102 and has a hollow structure.

Wherein, the inner shell subassembly includes first inner shell 41 and second inner shell 42, and first inner shell 41 sets up in first filter element, and second inner shell 42 has open end and closed end, and the open end sealing cover of second inner shell 42 is established in the one end of keeping away from installation department 11 of first inner shell 41, is formed with first cavity 101 between the inner wall of shell 1 and the outer wall of inner shell subassembly, and the inside of inner shell subassembly is formed with second cavity 102.

According to the filter element provided by the embodiment of the utility model, the accommodating cavity is divided into the first cavity 101 and the second cavity 102 by the inner shell assembly, when water flows into the first cavity 101 from the first water inlet 103 and is filtered by the first filtering component, the filtered water flows out from the first water outlet 104; after the water flows into the second chamber 102 from the second water inlet 105 and is filtered by the second filter member, the filtered water flows through the second water outlet 106, so that the first chamber 101 and the second chamber 102 are independent from each other, and the filtering processes in the respective chambers do not affect each other. In addition, the inner housing structure formed by the first inner housing 41 and the second inner housing 42 has better sealing performance and is more convenient to assemble. In conclusion, the composite filter element is innovatively designed on the basis of the original composite structure of the composite filter element, the design of the internal composite structure is optimized, the cost and the manufacturability are optimized, and the reliability is improved.

According to an embodiment of the present invention, the above-mentioned "the first chamber 101 is formed between the inner wall of the outer casing 1 and the outer wall of the inner casing assembly", that is, the first chamber 101 is formed between the outer wall of the first inner casing 41 and the outer wall of the second inner casing 42 and the inner wall of the outer casing 1. The "second chamber 102 is formed inside the inner housing assembly" as described above, that is, the inner wall of the first inner housing 41 and the inner wall of the second inner housing 42 jointly define the second chamber 102.

According to the embodiment of the present invention, a receiving cavity is formed in the housing 1, and the receiving cavity is used for placing the first filter element and the second filter element, and in order to ensure that the first filter element and the second filter element have larger size and filter path, the housing 1 has a rectangular parallelepiped structure or a cylindrical structure.

In some embodiments, the housing 1 may also be a special-shaped structure, so that the housing 1 can be embedded with the internal structure of the water purifying apparatus, thereby achieving the purpose of saving space.

As shown in fig. 1, according to the embodiment of the present invention, a mounting portion 11 is provided at one end of a housing 1, the mounting portion 11 protrudes from an end surface of the housing 1, and the mounting portion 11 is used for connecting a water supply and drainage structure of a water purification apparatus. The mounting part 11 and the housing 1 can be integrally formed, and the end part of the housing 1 protrudes outwards to form the mounting part 11, so that the housing 1 is better in sealing performance and lower in manufacturing cost. Or, the installation part 11 and the housing 1 may also be mutually independent parts, the installation part 11 is installed on the housing 1 through a locking member, and the two parts are connected in a sealing manner, so that the housing 1 and the installation part 11 are independent individuals, which is beneficial to the assembly of the internal structure of the filter element.

In the correlation technique, leading filter core and rearmounted filter core of water purification unit separately set up, can realize the same or different filtering capability. When the user changes the filter core, need change these two filter cores simultaneously, the operation is comparatively complicated.

In order to solve the above technical problem, according to the filter cartridge provided by the embodiment of the present invention, two independent filter components are disposed in the accommodating cavity, which are respectively a first filter component and a second filter component, and the first filter component and the second filter component can implement the same or different filter functions. According to the utility model, the first filter component and the second filter component are integrated in one filter element, so that the front-back composite filter element is formed, and thus, when a user needs to replace the filter element, the user can meet the use requirement only by replacing the filter element once, the operation is simpler, the use is more convenient, and in addition, the installation space in the water purifier can be saved.

As shown in fig. 4, according to an embodiment of the present invention, a first flow passage 107 is formed between the outer case 1 and the first filter member, and a second flow passage 108 is formed between the first filter member and the first inner case 41. The first flow passage 107 is in fluid communication with one of the first water inlet 103 and the first water outlet 104, and the second flow passage 108 is in fluid communication with the other of the first water inlet 103 and the first water outlet 104.

A third flow passage 109 is formed between the inner housing assembly and the second filter member, a fourth flow passage 110 is formed inside the second filter member, the third flow passage 109 is fluidly connected to one of the second water inlet 105 and the second water outlet 106, and the fourth flow passage 110 is fluidly connected to the other of the second water inlet 105 and the second water outlet 106.

In this embodiment, the first flow channel 107 and the second flow channel 108 are located in the first chamber 101, the third flow channel 109 and the fourth flow channel 110 are located in the second chamber 102, and the water in the first chamber 101 and the water in the second chamber 102 are isolated from each other when flowing through, so that the same or different filtering effects are achieved through the first filtering component and the second filtering component, and stable operation of the two sets of filtering modules is ensured without mutual interference. For example, the first filter element can filter domestic water, and the second filter element can filter drinking water.

As shown in fig. 4 and 5, in one embodiment of the utility model, the circulation of the water flow in the containing chamber is as follows:

the first water inlet 103 receives external tap water, the tap water flows through the first flow channel 107 and is filtered by the first filtering component, the first filtering component filters the tap water to obtain domestic water, the domestic water flows to the first water outlet 104 along the second flow channel 108, and then the domestic water flows out from the first water outlet 104 for users to use.

The second water inlet 105 receives pure water filtered by the reverse osmosis filter element, the pure water flows through the third flow channel 109 and is filtered by the second filtering component, the drinking water flows to the second water outlet 106 along the fourth flow channel 110, and then the drinking water flows out from the second water outlet 106 for the user to drink.

It should be noted that, in the circulation process of the water flow in the accommodating cavity, due to the separation of the inner shell assembly, the water filtering process in the first chamber 101 and the water filtering process in the second chamber 102 do not affect each other, a user can filter water by using the first filtering component or the second filtering component according to the own needs, and the user can also fill water into the first water inlet 103 and the second water inlet 105 at the same time, so that the first filtering component and the second filtering component work at the same time.

As shown in fig. 4, according to an embodiment of the present invention, a first supporting member 211 is disposed in the first flow channel 107, and the first supporting member 211 abuts against the first filter component and the housing 1.

In this embodiment, the first supporting member 211 is used to support the flowing space in the first flow channel 107, that is, the first supporting member 211 can maintain the distance between the first filtering component and the housing 1, so as to maintain the water flowing capacity of the first flow channel 107 and avoid the pipe blockage phenomenon after long-term use.

In some embodiments of the present invention, the first supporting member 211 may be a structure of a fastening point, a protrusion, a cross beam, etc., and the present invention is not particularly limited thereto, as long as the first supporting member 211 can support a gap between the first filter element and the housing 1. In addition, the first support 211 may be a single piece independent from the first filter element or the housing 1, and the first support 211 may also be a structure integrally formed with the first filter element or the housing 1.

As shown in fig. 4, according to an embodiment of the present invention, a second supporting member 413 is disposed in the second flow passage 108, and the second supporting member 413 abuts against the first filter member and the first inner housing 41.

In this embodiment, the second supporting element 413 is used for supporting the flowing space in the second flow channel 108, that is, the second supporting element 413 can maintain the distance between the first filtering element and the first inner casing 41, so as to maintain the water flowing capacity of the second flow channel 108 and avoid the pipe blockage phenomenon after long-term use.

In some embodiments of the present invention, the second supporting member 413 may be a button, a protrusion, a beam, etc., and the present invention is not limited thereto, as long as the second supporting member 413 can support the gap between the first filter element and the first inner case 41. In addition, the second supporting member 413 may be a single part independent from the first filter member or the first inner housing 41, and the second supporting member 413 may also be a structure integrally formed with the first filter member or the first inner housing 41.

As shown in fig. 11, according to one embodiment of the present invention, the first filter member includes a first end cap 21 and a first filter element 22, the first filter element 22 has a hollow structure, the first end cap 21 is disposed on one side of the first filter element 22 close to the mounting portion 11, and the first end cap 21 is formed with a first mounting groove 212 adapted to mount the first filter element 22.

In this embodiment, the first filter element 22 functions to filter water, and the first end cap 21 can be used to fix and position the first filter element 22, so that the first filter element 22 is fixed on the outer side of the first inner housing 41. The end of the first filter element 22 is inserted into the first mounting groove 212, so that the position of the first filter element 22 is not changed, and it can be understood that the first end cover 21 can limit the displacement of the first filter element 22, thereby avoiding the deformation and loosening of the first filter element 22 under the action of water pressure, and facilitating the improvement of the filtering capacity of the first filtering component.

In an embodiment of the present invention, the first filter element 22 includes an outer layer of folded PP cotton and an inner layer of carbon rod, the folded PP cotton can effectively remove large particles of impurities such as silt, iron filings, etc. in water, and the carbon rod can effectively adsorb impurities such as peculiar smell, color, residual chlorine, etc., so as to further improve water quality.

As shown in fig. 12 and 13, in one embodiment of the present invention, the first end cap 21 is a ring-shaped end cap, the first inner housing 41 passes through the through hole in the middle of the first end cap 21 and then communicates with the second water inlet 105 and the second water outlet 106, the first filter cartridge 22 is a ring-shaped filter cartridge, and the first filter cartridge 22 is installed in the first installation groove 212. In this way, the first end cap 21 can simultaneously achieve the installation positioning of the first filter cartridge 22 and the installation positioning of the first inner housing 41.

As shown in fig. 12 and 13, in one embodiment of the present invention, the first end cap 21 is integrally formed with the first support member 211, or an inner wall of the housing 1 is protruded toward the first cartridge 22 to form the first support member 211. Thus, there is no need to worry about the problem of assembling the first support 211, and the stability is stronger. For example, the first supporting member 211 is a protrusion formed on the outer peripheral edge of the first end cap 21, and the free end of the first supporting member 211 abuts against the inner wall of the housing 1.

As shown in fig. 14, in one embodiment of the present invention, the first inner housing 41 and the second support 413 are integrally formed, for example, an outer wall of the first inner housing 41 protrudes toward the first filter element 22 to form the second support 413, and a free end of the second support 413 abuts against an inner wall of the first filter element 22 or the first end cap 21. Alternatively, the first end cap 21 and the second support piece 413 are integrally formed, for example, the inner wall of the first end cap 21 protrudes toward the first inner housing 41 to form the second support piece 413, and the free end of the second support piece 413 abuts against the outer wall of the first inner housing 41.

As shown in fig. 12, according to an embodiment of the present invention, the first support 211 includes a plurality of first support ribs (not shown), which are spaced along an outer edge of the first filter member. Like this, the smooth circulation of rivers in first runner 107 can also be guaranteed to a plurality of first support muscle that the interval set up when satisfying supporting role, reduces first support piece 211 to the resistance that rivers flow. Further, the plurality of first support ribs provided in the annular direction can also ensure that each region in the circumferential direction of the first flow passage 107 can be supported.

As shown in fig. 14, according to an embodiment of the present invention, the second supporting member 413 includes a plurality of second supporting ribs (not shown) that are spaced along an outer edge of the first inner case 41. Like this, a plurality of second brace rods that the interval set up can also guarantee the smooth circulation of rivers in the second runner 108 when satisfying supporting role, reduce second support piece 413 to the resistance that rivers flow. In addition, the plurality of second support ribs arranged in the annular direction can also ensure that each region in the circumferential direction of the second flow channel 108 can be supported.

As shown in fig. 11, according to an embodiment of the present invention, a third supporting member 314 is disposed in the third flow passage 109, and the third supporting member 314 abuts against the inner shell assembly and the second filter member.

In this embodiment, the third supporting element 314 is used for supporting the flow space in the third flow channel 109, that is, the third supporting element 314 can maintain the distance between the second filtering part and the inner shell assembly, so as to maintain the water flowing capacity of the third flow channel 109 and avoid the pipe blockage phenomenon after long-term use.

In some embodiments of the present invention, the third supporting member 314 may be a button, a protrusion, a beam, etc., and the present invention is not particularly limited thereto, as long as the third supporting member 314 can support the gap between the second filter element and the inner shell assembly. In addition, the third support 314 may be a single part independent from the second filter member or the inner housing assembly, and the first support 211 may also be a structure integrally formed with the second filter member or the inner housing assembly.

As shown in fig. 11, according to one embodiment of the present invention, the second filter member includes a second end cap 31 and a second filter cartridge 32. The second filter element 32 is a hollow structure, the second end cap 31 is disposed on one side of the second filter element 32 close to the mounting portion 11, and the second end cap 31 is formed with a second mounting groove 315 suitable for mounting the second filter element 32.

As shown in fig. 20 and 21, the second end cap 31 has a water outlet pipe section 311 disposed inside the first inner housing 41, the second end cap 31 further has a water inlet pipe section 313 disposed inside the second filter element 32, and the water inlet pipe section 313 and the water outlet pipe section 311 are communicated and jointly define the fourth flow channel 110.

In the present embodiment, the third flow channel 109 is defined between the first inner casing 41 and the second end cap 31, and the fourth flow channel 110 is formed inside the second end cap 31 (i.e., inside the water outlet pipe section 311 and the water inlet pipe section 313). The circulation process of the water flow in the second chamber 102 is as follows: after the water enters the second water inlet 105, the water flows through the third flow channel 109 between the first inner housing 41 and the second end cap 31, then the water flows into and is filtered by the second filter element 32, the filtered water flow is gathered in the hollow inner area of the second filter element 32, then the water flows into the water inlet pipe section 313 and passes through the water outlet pipe section 311 until the water flows out from the second water outlet 106.

In an embodiment of the present invention, the second filter element 32 may be composed of a carbon rod, etc., and the taste of the pure water generated by the reverse osmosis filter element is obviously improved after the pure water is filtered by the carbon rod.

As shown in fig. 20 and 21, in one embodiment of the present invention, the first end cap 21 includes a water inlet pipe section 313, a cap body section 312, and a water outlet pipe section 311, which are sequentially disposed. The first inner housing 41 is a hollow T-shaped pipe, the first inner housing 41 includes a first portion 411 with a smaller diameter and a second portion 412 with a larger diameter, the first portion 411 of the first inner housing 41 is sleeved inside the first filter element 22, and the inside of the first portion 411 is sleeved with the water outlet pipe section 311 of the first end cover 21. The second portion 412 of the first inner housing 41 is capped at the cap section 312 of the first end cap 21.

The cover section 312 of the first end cover 21 is formed with an annular second mounting groove 315, the second filter element 32 is mounted in the second mounting groove 315, and the inner portion of the second filter element 32 is sleeved with a water inlet pipe section 313 of the first end cover 21. The third flow channel 109 is formed between the inner wall of the first inner casing 41 and the outer walls of the water inlet pipe section 313 and the cover body section 312 of the second end cover 31.

As shown in fig. 21, according to an embodiment of the present invention, the second end cap 31 is integrally formed with the third supporter 314, or the first inner case 41 is integrally formed with the third supporter 314. For example, the outer wall of the second end cap 31 protrudes toward the first inner case 41 to form the third supporter 314, or the inner wall of the first inner case 41 protrudes toward the second end cap 31 to form the third supporter 314.

Thus, the assembling process of the third supporting member 314 is omitted, and the influence of the impact of the water flow on the supporting effect of the third supporting member 314 can be avoided, and the structural stability is stronger.

As shown in fig. 20, according to an embodiment of the present invention, the third support member 314 includes a plurality of third support ribs (not shown) that are spaced apart along the inner edge of the inner housing assembly. Thus, the third support ribs arranged at intervals can satisfy the support function, and meanwhile, the smooth circulation of water flow in the third flow channel 109 can be ensured, and the resistance of the third support member 314 to the flow of water flow is reduced. In addition, the plurality of third support ribs arranged in the annular direction can also ensure that each region in the circumferential direction of the third flow channel 109 can be supported.

According to an embodiment of the present invention, the number of the third supporting members 314 is multiple, each of the third supporting members 314 includes multiple third supporting ribs arranged at the same installation height of the third flow channel 109, and the multiple third supporting members 314 are respectively arranged at intervals along different installation heights of the third flow channel 109. Thus, the plurality of third supporting members 314 are provided in the flow direction of the third flow channel 109, so that each area in the flow direction of the third flow channel 109 can be supported, and further, the third flow channel 109 can be prevented from being blocked.

As shown in fig. 22, according to an embodiment of the present invention, the second filter component further includes a third end cap 33, the third end cap 33 is disposed at the bottom of the second chamber 102 and abuts against the bottom wall of the inner side of the second inner housing 42, and the bottom of the second filter element 32 is positioned in the third end cap 33, so that the third end cap 33 and the second end cap 31 jointly play a positioning and installing role for the second filter element 32, so that the installation of the second filter element 32 is more stable.

As shown in fig. 18 and 19, according to an embodiment of the present invention, the first inner case 41 and the second inner case 42 are fixed by spin welding. In this way, the connection mode of the internal conversion position is changed from connection by the sealing ring 52 to spin welding, so that the reliability of the structure can be greatly improved, the sealing performance between the first chamber 101 and the second chamber 102 is ensured, and the stable combination of the first filtering part and the second filtering part is realized.

As shown in fig. 4, according to one embodiment of the present invention, a detachable first cover 12 is provided at one end of the outer case 1 adjacent to the second inner case 42. When the first cover 12 is opened, the first filter element, the second filter element and the inner shell assembly can be placed in the accommodating cavity, the first cover 12 is fixed to the outer shell 1, and the first filter element, the second filter element and the inner shell assembly can be sealed in the accommodating cavity.

According to one embodiment of the utility model, the outer wall of the open end of the second inner housing 42 is sealed to the inner wall of the outer housing 1 by a seal (not shown). Thus, the water flow can be prevented from flowing into the vicinity of the first cover 12 through the gap between the second inner shell 42 and the outer shell 1, thereby preventing the water flow from leaking at the first cover 12 and enhancing the sealing performance of the whole structure. For example, the sealing member may be a rubber gasket.

As shown in fig. 2, in the filter cartridge provided in the embodiment of the present invention, the first water inlet 103, the first water outlet 104, the second water inlet 105, and the second water outlet 106 are all provided with the water stop valve 51, and the water stop valve 51 has an open position and a closed position.

In the open position, the corresponding first water inlet 103, first water outlet 104, second water inlet 105 and second water outlet 106 are in a water guiding state; in the closed position, the corresponding first water inlet 103, first water outlet 104, second water inlet 105 and second water outlet 106 are in a water-blocking state.

It will be appreciated that in normal operation of the filter cartridge, the water stop valve 51 is in the open position under the influence of the other support structure, the first water inlet 103 receives tap water from the outside, and the first filter member filters the tap water to form domestic water, which is then discharged along the first water outlet 104. The second water inlet 105 receives pure water filtered by the reverse osmosis cartridge, the pure water passes through the second filter element to form drinking water, and the drinking water flows out along the second water outlet 106 for use by a user. In the closed position, the corresponding first water inlet 103, first water outlet 104, second water inlet 105 and second water outlet 106 are in the water blocking state, the residual water in the filter element cannot leak, the cabinet is prevented from being polluted or the residual water is prevented from being scattered on the body of a user, and the filter element is cleaner, more sanitary and more convenient.

As shown in fig. 2, the water stop valve 51 is located at the installation portion 11, and the filter cartridge needs to be detached to avoid touching the water stop valve 51, so as to avoid leakage of residual water along the first water inlet 103, the first water outlet 104, the second water inlet 105 and the second water outlet 106.

As shown in fig. 23 and 24, in some embodiments, the water stop valve 51 includes a valve housing 5142, a valve cap 5144, a valve core 5146, and a resilient member 5148.

The valve housing 5142 has a hollow structure, which may be a cylindrical structure or a polygonal frame structure, and the outer contour of the valve housing 5142 is adapted to the inner wall contours of the first water inlet 103, the first water outlet 104, the second water inlet 105 and the second water outlet 106. An inner wall of the valve housing 5142 is formed with an annular blocking portion 5168 for blocking the valve core 5146.

The valve cap 5144 is connected to one end of the valve housing 5142 to close off the end of the valve housing 5142, and the valve cap 5144 and the valve housing 5142 are combined to form a semi-closed chamber. A spool 5146 is provided in the valve housing 5142, and the spool 5146 is located at a position between the valve cover 5144 and the stopper 5168.

It is understood that the valve core 5146 is restricted in an area between the valve cap 5144 and the blocking portion 5168 after being installed in the valve housing 5142, and does not escape from the valve housing 5142. In order to ensure the circulation of the liquid, the valve cap 5144 is further provided with a water through hole (not shown) along which the liquid can circulate in a water-guiding state.

As shown in fig. 23 and 24, an elastic member 5148 is provided in the valve housing 5142, and one end of the elastic member 5148 is connected to the valve cap 5144 and the other end thereof is connected to the valve element 5146, so that the valve element 5146 can move away from the valve cap 5144. When only the elastic member 5148 acts, the valve core 5146 abuts against the blocking portion 5168 to block the water flow, and the water stop valve 51 is in the closed position. When a force is applied to the spool 5146, the elastic member 5148 is compressed, and the spool 5146 is away from the position of the stopper 5168, and the water stop valve 51 is in the open position. Accordingly, the elastic member 5148 may switch the corresponding first water inlet 103, first water outlet 104, second water inlet 105, and second water outlet 106 between the water guiding state and the water blocking state.

It can be understood that when the filter element is connected to the body of the water purifying apparatus, the structure in the body can support the valve element 5146, so that the filter element is in a water guiding state. When the filter element is detached, the acting force applied to the valve core 5146 is cancelled, the valve core 5146 is abutted against the blocking part 5168 under the action of the elastic part 5148, so that the filter element is in a water blocking state, residual water in the filter element cannot leak, and the cleanness and the sanitation of the filter element are improved.

It is understood that the elastic member 5148 may be a spring, a steel plate, or the like.

As shown in fig. 23 and 24, in some embodiments, a side of the valve core 5146 facing away from the elastic member 5148 is provided with a contact member 5150, and the contact member 5150 is inserted into the blocking portion 5168.

It can be appreciated that the contact member 5150 can apply an acting force to the spool 5146, and the contact member 5150 is disposed on the spool 5146, which is beneficial to the use of the filter element in cooperation with the machine body. After the filter element is in butt joint with the machine body, the machine body can apply acting force to the contact pressing piece 5150, and effective communication between the filter element and the machine body is ensured. Contact casting die 5150 has also reduced the butt joint degree of difficulty of filter core with the organism simultaneously, installs the filter core in corresponding the position after, connecting pipe on the organism with contact casting die 5150 automatic butt joint, need not proofreaied and correct the position many times, it is more convenient during the use.

As shown in fig. 23 and 24, in some embodiments, the outer side of the contact member 5150 is provided with a reinforcement portion 5152, and the reinforcement portion 5152 may increase the structural strength of the contact member 5150.

It is understood that the number of the reinforcing portions 5152 may be plural, and the reinforcing portions 5152 are uniformly distributed outside the contact member 5150. In some cases, the reinforcement 5152 is a rib plate, four rib plates are distributed in a cross shape, and a flow passage is formed between the rib plates. The reinforcing portion 5152 not only increases the structural strength of the contact member 5150, but also does not affect the flow of the liquid inside the water stop valve 51.

When the spool 5146 abuts against the stopper 5168, the water stop valve 51 is in the closed position and is in the water blocking state. The stability of the movement of the valve core 5146 is increased, which is beneficial to improving the water blocking performance of the water stop valve 51.

As shown in fig. 23 and 24, in some embodiments, the water stop valve 51 further includes a first guide 5154 and a second guide 5156, and the first guide 5154 is slidably connected to the second guide 5156.

The first guide 5154 has opposite ends, and one end of the first guide 5154 is connected to the cap 5144 and the other end extends in a direction in which the spool 5146 is located. The second guide 5156 has opposite ends, and one end of the second guide 5156 is connected to the spool 5146 and the other end extends in the direction of the cap 5144. The sliding connection of the first guide 5154 and the second guide 5156 can ensure that the spool 5146 is stable during movement.

It can be understood that the first guide 5154 and the second guide 5156 can relatively slide along a linear direction, and when the spool 5146 is far away from or close to the blocking portion 5168, no shaking or position deviation occurs, and the spool can precisely abut against the annular blocking portion 5168, which is beneficial to improving the water blocking performance of the water stop valve 51.

In some embodiments, one of the first guide 5154 and the second guide 5156 is provided with a sliding rail, and the other one is provided with a sliding groove, and the sliding rail and the sliding groove cooperate with each other to ensure stable sliding of the two.

In some embodiments, one of the first guide 5154 and the second guide 5156 is provided with a guide hole, and the other is provided with a guide rod, the guide rod is movably inserted into the guide hole, and the guide hole and the guide rod are mutually matched to ensure that the two stably slide.

It can be understood that when the number of the elastic members 5148 is one, the first guide member 5154 is connected to the center of the valve cap 5144, the elastic member 5148 is sleeved outside the first guide member 5154, the elastic member 5148 applies a force to the centers of the valve cap 5144 and the valve plug 5146, and the movement of the valve plug 5146 is more balanced and stable. When the number of the elastic members 5148 is plural, the plural elastic members 5148 are uniformly distributed between the spool 5146 and the valve cap 5144, so that the spool 5146 can be uniformly and uniformly applied with force.

When the valve element 5146 abuts against the blocking portion 5168, the water stop valve 51 is in the closed position, the first water inlet 103, the first water outlet 104, the second water inlet 105 and the second water outlet 106 are in the water blocking state, and the sealing performance between the valve element 5146 and the blocking portion 5168 determines the sealing performance of the water stop valve 51.

As shown in fig. 23 and 24, in some embodiments, a first positioning groove 5158 is provided at an outer side of the spool 5146, and a spool seal 5160 is provided in the first positioning groove 5158.

It can be understood that the valve plug sealing member 5160 is made of plastic or silicone, and in the water blocking state, the valve plug sealing member 5160 abuts against the blocking portion 5168 to prevent the liquid from flowing in the valve housing 5142. The spool sealing member 5160 has elasticity, and is deformed by the elastic member 5148, so as to be attached to the blocking portion 5168, and the sealing effect of the water stop valve 51 is good.

As shown in fig. 24, in some embodiments, a side of the blocking portion 5168 adjacent to the spool 5146 is formed with a gradually expanding inclined surface 5162 toward a direction in which the elastic member 5148 is compressed.

It can be understood that, in the water-flowing state, the spool 5146 is disengaged from the blocking portion 5168, a flow passage is formed therebetween, and the liquid flows in the valve housing 5142. The inclined surface 5162 can shorten the flow path of the liquid and reduce the resistance to the flow of the liquid, thereby facilitating the passage of the liquid in the valve housing 5142 and the throughput of the filter element.

Meanwhile, when the elastic member 5148 pushes the valve element 5146 to approach the blocking portion 5168, the area of the valve element 5146 contacting the inclined surface 5162 is large, and under the elastic action, the valve element 5146 contacts the inclined surface 5162 which gradually contracts, so that a self-locking effect is formed, and the sealing performance of the water stop valve 51 is improved.

As shown in fig. 23 and 24, in some embodiments, a second positioning groove 5164 is provided at an outer side of the valve housing 5142, and a valve housing sealing member 5166 is provided in the second positioning groove 5164.

As shown in fig. 1, the filter cartridge according to the embodiment of the present invention further includes a second cover 13. The first cover 12 covers one end of the housing 1, and a first joggle is disposed on the outer side surface of the housing 1. The second cover 13 is detachably mounted on the outer side of the first cover 12, and the second cover 13 is provided with a second joggle portion, and the first joggle portion and the second joggle portion are in form fit to limit the rotation of the second cover 13.

According to the filter element provided by the embodiment of the utility model, the second cover body 13 is detachably arranged on the outer side of the first cover body 12, so that the second cover body 13 can be conveniently assembled, the second cover body 13 can cover the first cover body 12, the whole structure is attractive and elegant, in addition, the first joggle joint part and the second joggle joint part can realize the positioning of the second cover body 13, the second cover body 13 is prevented from randomly rotating, and the stability of the structure is ensured.

It can be understood that, because the first joggle joint portion is arranged on the housing 1 and the second joggle joint portion is arranged on the second cover body 13, the first cover body 12 is arranged between the housing 1 and the second cover body 13, and then the first joggle joint portion and the second joggle joint portion are matched to enable the housing 1 and the second cover body 13 to exert a clamping action force on the first cover body 12, so that the mounting of the first cover body 12 is more stable, and the structural stability of the whole filter element is improved.

As shown in fig. 1, according to an embodiment of the present invention, the mounting portion 11 of the housing 1 further includes a third cover 14, and the third cover 14 is formed with a first water inlet 103, a first water outlet 104, a second water inlet 105, and a second water outlet 106. The third cover 14 is used to close the opening of the housing 1.

According to an embodiment of the present invention, the first cover 12 may be a filter end cap for closing the installation cavity inside the housing 1, and the second cover 13 may be a decoration cover for decoration, and the present invention is not limited thereto.

According to some embodiments of the present invention, the first tenon and the second tenon are matched in shape, for example, the first tenon and the second tenon may be a matching structure of a groove (i.e., a mortise) and a protrusion (i.e., a tenon), a matching structure of a hole (i.e., a mortise) and a bolt (i.e., a tenon), and the like, and the present invention is not particularly limited to the specific structure of the first tenon and the second tenon, as long as the first tenon and the second tenon can be matched in shape.

In one embodiment of the present invention, the first joggle is a positioning protrusion 15 extending along the length direction of the housing 1, and the second joggle is a positioning groove 131.

In another embodiment of the present invention, the first joggle is a positioning groove 131 extending along the length direction of the housing 1, and the second joggle is a positioning projection 15. It should be noted that the positioning protrusion 15 may be a latch, and may also be a protrusion formed on the housing 1 or the second cover 13, and the utility model is not limited in this respect.

In the above embodiment, the first joggle portion and the second joggle portion are matched as long as the second cover 13 can be prevented from rotating freely, and there is no requirement for the material of the first joggle portion and the second joggle portion, for example, the first joggle portion and the second joggle portion may be made of a plastic material, or may be made of an alloy material.

In the two embodiments, one of the first joggle part and the second joggle part may be the positioning groove 131, and the other may be the positioning protrusion 15 matched with the positioning groove 131, and an end of the positioning protrusion 15 facing the positioning groove 131 is matched into the positioning groove 131 to realize positioning and installation of the second cover 13, so that the positioning protrusion 15 limits rotation of the second cover 13, thereby ensuring positioning of the second cover 13.

The longitudinal direction of the housing 1 is relative to the start end and the end of the housing 1, the first lid 12 and the second lid 13 are both attached to the end of the housing 1, and if the housing 1 is placed vertically, the longitudinal direction is the height direction of the housing 1.

According to an embodiment of the present invention, the housing 1 is a cylindrical housing 1, the first joggle is a positioning protrusion 15 disposed on the outer peripheral surface of the housing 1, the positioning protrusion 15 extends along the axial direction of the housing 1, and one end of the positioning protrusion 15 facing the first cover 12 is disposed higher than the end of the housing 1, the first cover 12 and the second cover 13 are both disc-shaped, one end of the second cover 13 facing the housing 1 is disposed with a positioning groove 131, and the positioning groove 131 extends along the axial direction of the second cover 13, so that the part of the positioning protrusion 15 higher than the end of the housing 1 can be fitted into the positioning groove 131, thereby positioning the second cover 13.

It should be noted that the above-mentioned embodiment is only one of many embodiments of the present invention, and does not limit the filter element of the present invention, and the housing 1, the first cover 12, and the second cover 13 may have various structural shapes such as a prism shape, a rectangular parallelepiped shape, and the present invention is not limited in particular.

According to an embodiment of the present invention, the positioning groove 131 is a "T" shaped positioning groove 131, and an end of the positioning protrusion 15 facing the positioning groove 131 is "T" shaped.

Thus, when the positioning protrusion 15 is fitted into the positioning groove 131, the T-shaped fitting structure can not only limit the rotation of the second cover 13, but also limit the second cover 13 from falling off in the length direction of the housing 1, so that the second cover 13 is prevented from falling off, and therefore, the positioning and installation of the second cover 13 in two directions are realized through a set of T-shaped fitting structures, and the structure is simpler. For example, the positioning groove 131 includes a first positioning groove 131 section with a smaller width and a second positioning groove 131 section with a larger width, wherein the first positioning groove 131 section is open and located on one side of the second positioning groove 131 section adjacent to the positioning protrusion 15, and the end of the positioning protrusion 15 facing the positioning groove 131 is matched with the positioning groove 131 in shape.

It should be noted that the positioning groove 131 and the positioning protrusion 15 may not only be configured as a "T" shaped structure, but also the positioning groove 131 and the positioning protrusion 15 may be configured as a structure matching a slot and a hook, and the above structure may also realize the positioning of the second cover 13 in two orientations.

According to an embodiment of the present invention, the first cover 12 is provided with a third positioning element, and the second cover 13 is further provided with a fourth positioning element, wherein the third positioning element and the fourth positioning element cooperate to limit the sliding of the second cover 13 along the length direction of the housing 1.

In this way, the rotation of the second cover 13 is limited by the cooperation of the first positioning element and the second positioning element, and the sliding of the second housing 1 is limited by the cooperation of the third positioning element and the fourth positioning element, so that the second cover 13 is more firmly mounted, and the second cover 13 is prevented from rotating or sliding. For example, the third positioning element and the fourth positioning element may be a fastening structure, a hook-and-slot structure, etc., and the present invention is not limited thereto.

According to another embodiment of the present invention, a third positioning element may be further disposed on the housing 1, so that the clamping effect of the second cover 13 and the housing 1 on the first cover 12 is more prominent, and the structural stability is further improved.

As shown in fig. 25 and 29, according to an embodiment of the present invention, the third positioning member is a first rib 121 having a circular arc shape, and the first rib 121 extends along the outer edge of the first cover 12. The fourth positioning member is an arc-shaped second rib 132, the second rib 132 is disposed on the inner surface of the second cover 13 and parallel to the first rib 121, and the first rib 121 and the second rib 132 are fastened to each other.

Thus, the structure is simple and the assembly is convenient, and the first rib 121 and the second rib 132 which are parallel to each other can ensure that the buckling between the first cover 12 and the second cover 13 is tighter. For example, the first lid 12 and the second lid 13 are both disc-shaped, and the first rib 121 extends along the outer peripheral surface of the first lid 12, and the second rib 132 extends along the inner peripheral surface of the second lid 13.

As shown in fig. 25 and 29, in an embodiment of the present invention, the first ribs 121 and the second ribs 132 are respectively a plurality of groups corresponding to each other, all the first ribs 121 are disposed at intervals along the outer edge of the first cover 12 and are all located at the same height of the first cover 12, and all the second ribs 132 are located at the same height of the second cover 13.

In another embodiment of the present invention, the first rib 121 and the second rib 132 are each circular.

As shown in fig. 25 and 29, according to an embodiment of the present invention, the first rib 121 is formed with a first guide surface 122, the second rib 132 is formed with a second guide surface 133, and the first guide surface 122 and the second guide surface 133 are adapted to cooperate with each other to guide the installation of the first cover 12 and the second cover 13.

In this embodiment, during the process of assembling the first cover 12 and the second cover 13, the first guide surface 122 and the second guide surface 133 contact first, and then under the guiding action of the first guide surface 122 and the second guide surface 133, the first rib 121 and the second rib 132 approach each other until the first rib 121 and the second rib 132 are fastened. In this way, the first guide surface 122 and the second guide surface 133 can guide the fastening process of the first rib 121 and the second rib 132, so that the fastening process of the first rib 121 and the second rib 132 is smoother.

As shown in fig. 25 and 29, in one embodiment of the present invention, the first guide surface 122 is formed on a side of the first rib 121 facing the second cover 13, the second guide surface 133 is formed on a side of the second rib 132 facing the first cover 12, and both the first guide surface 122 and the second guide surface 133 are inclined surfaces. For example, the first guide surface 122 is formed on an upper side of the first rib 121, the first guide surface 122 extends upward from a free end of the first rib 121 toward a fixed end thereof, the second guide surface 133 is formed on a lower side of the second rib 132, and the second guide surface 133 extends downward from the free end of the second rib 132 toward a fixed end thereof.

According to one embodiment of the utility model, the first guiding surface 122 is at an angle a to the horizontal, the second guiding surface 133 is at an angle B to the horizontal, and a and B are summed to a value of 90 °. In this way, the first guide surface 122 and the second guide surface 133 can be completely attached to make the guiding process smoother.

As shown in fig. 2, according to one embodiment of the present invention, the filter cartridge further includes a handle portion 53, the handle portion 53 is rotatably connected to the second cover 13, and the second cover 13 is formed with an escape groove 134 adapted to receive the handle portion 53. Thus, when the filter element needs to be installed or detached from the water purifier, a maintenance worker can lift out or return the whole filter element through the lifting handle 53.

In one embodiment of the present invention, the first cover 12 and the second cover 13 are provided with mounting holes (not shown) for rotatably connecting the handle portion 53, and the first cover 12 is also provided with a groove (not shown) adapted to receive the handle portion 53. The position of the groove corresponds to the position of the escape groove 134. Like this, the holistic aesthetic property of structure is stronger to make things convenient for the filter core to install in the water purifier.

It can be understood that under the condition that is provided with and dodges groove 134, handle portion 53 can be placed in dodging groove 134 when not using, has reduced the space that handle portion 53 occupy, is favorable to dwindling the volume of filter core, can make water purification unit's structure compacter, is favorable to water purification unit in the use in narrow and small spaces such as kitchen.

As shown in fig. 2, according to some embodiments of the present invention, a sealing ring 52 is disposed between the water stop valve 51 and each water inlet/outlet, a sealing ring 52 is disposed between the first end cap 21 and the outer shell 1, a sealing ring 52 is disposed between the first inner shell 41 and the first end cap 21, and a sealing ring 52 is disposed between the water outlet pipe 311 of the second end cap 31 and the first inner shell 41, the sealing rings 52 disposed between the assembly gaps can ensure the sealing effect of the whole structure, and prevent water from leaking from the accommodating cavity.

According to a second aspect of the utility model, a water purification apparatus comprises a housing and a filter element according to the first aspect of the utility model. The filter element is arranged in the machine body.

The effect of the water purifying device according to the embodiment of the second aspect of the present invention is similar to that of the filter element of the first aspect of the present invention, and will not be described herein again.

The above embodiments are only for illustrating the present invention and are not to be construed as limiting the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims (10)

1. A filter cartridge, comprising:

the outer side surface of the shell is provided with a first joggle joint;

the first cover body is covered at one end of the shell;

the second cover body is detachably arranged on the outer side of the first cover body and is provided with a second joggle part, and the first joggle part is matched with the second joggle part in shape so as to limit the rotation of the second cover body;

one of the first joggle part and the second joggle part is a positioning bulge, and the other joggle part is a positioning groove.

2. The filter element of claim 1, wherein the first cover has a third positioning element thereon, and the second cover has a fourth positioning element thereon, the third positioning element cooperating with the fourth positioning element to limit the second cover from sliding along the length of the housing.

3. The filter element according to claim 2, wherein the third positioning element is a first convex rib with an arc shape, and the first convex rib extends along the outer edge of the first cover body;

the fourth positioning piece is an arc-shaped second convex rib, the second convex rib is arranged on the inner surface of the second cover body and is parallel to the first convex rib, and the first convex rib and the second convex rib are mutually buckled.

4. The filter element according to claim 3, wherein the first ribs and the second ribs are respectively a plurality of groups corresponding to one another, all the first ribs are arranged at intervals along the outer edge of the first cover body and are positioned at the same height of the first cover body, and all the second ribs are positioned at the same height of the second cover body;

alternatively, the first rib and the second rib are respectively annular.

5. The filter cartridge of claim 3, wherein the first rib is formed with a first guide surface and the second rib is formed with a second guide surface;

the first guide surface and the second guide surface are adapted to cooperate to guide the installation of the first cover and the second cover.

6. The filter cartridge of claim 1, wherein the first dovetail is a positioning projection extending along a length of the housing, and the second dovetail is a positioning groove;

or, the first joggle joint is a positioning groove extending along the length direction of the shell, and the second joggle joint is a positioning bulge.

7. The filter cartridge of claim 6, wherein the positioning groove is a "T" shaped positioning groove, and an end of the positioning protrusion facing the positioning groove is T-shaped.

8. The filter element according to any one of claims 1 to 7, wherein the housing is formed with a receiving chamber, and one end of the housing is provided with a mounting portion formed with a first water inlet, a first water outlet, a second water inlet, and a second water outlet communicating with the receiving chamber;

the filter element of the filter cartridge comprises:

the first filtering component is arranged in the accommodating cavity, the first filtering component is of a hollow structure, one of the first water inlet and the first water outlet is communicated with the outer side of the first filtering component in a fluid mode, and the other one of the first water inlet and the first water outlet is communicated with the inner side of the first filtering component in a fluid mode;

the second filter component is arranged in the accommodating cavity and is positioned at one side of the mounting part, the first filter component is far away from the mounting part, the second filter component is of a hollow structure, the second water inlet is communicated with one of the fluid of the second water outlet in the outer side of the second filter component, and the other fluid is communicated with the inner side of the second filter component.

9. The filter cartridge of any one of claims 1-7, further comprising:

the handle part is connected with the second cover body, and the second cover body is provided with an avoiding groove suitable for placing the handle part.

10. A water purification apparatus comprising a housing and a filter element as claimed in any one of claims 1 to 9, the filter element being disposed within the housing.

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