Filter element assembly and water purification device

Abstract

A filter element assembly (100) and a water purification device (10). The filter element assembly (100) comprises a filter element seat (110), a filter element body (120) and an end cover (130); the filter element seat (110) is provided with a mounting cavity (111) and a mounting opening (112) communicated with the mounting cavity (111), guide grooves (113) are formed in the inner wall of the mounting opening (112), the guide grooves (113) extend obliquely in the circumferential direction of the mounting opening (112), and the guide grooves (113) are communicated with the mounting opening (112); the filter element body (120) is arranged in the mounting cavity (111), one end of the filter element body (120) is inserted into a water path plate, and the other end of the filter element body (120) is provided with a rotating connecting portion; the end cover (130) is correspondingly arranged at the mounting opening (112), the end cover (130) is rotatably connected to the filter element body (120) by means of the rotating connecting portion, snap-fit protrusions (131) corresponding to the guide grooves (113) are arranged on the outer peripheral wall of the end cover (130), and the snap-fit protrusions (131) can slide along the guide grooves (113), so as to bring part of the filter element body (120) away from the mounting cavity (111) in the axial direction. In this way, the screwing force needing to be applied during disassembly and assembly of the filter element assembly (100) is reduced, thereby saving more labor when a user changes the filter element, and improving the user experience.

Description

Filter element assembly and water purification device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent applications No. 2023236199120 filed on December 28, 2023, entitled “Filter cartridge assembly and water purification device”, No. 202323621492X filed on December 28, 2023, entitled “Filter cartridge assembly and water purification device”, and No. 2023236186277 filed on December 28, 2023, entitled “Filter cartridge assembly and water purification device”, all of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of water purification technology, and in particular to a filter element assembly and a water purification device. Background Art

[0004] Water purifiers are water treatment devices that deeply filter and purify water according to specific usage requirements. They effectively remove rust, sand, and colloids from water, as well as absorb residual chlorine, odor, discoloration, pesticides, and other chemicals. They effectively remove bacteria, pathogens, toxins, heavy metals, and other impurities from water. They are widely used in both residential and commercial applications.

[0005] In the relevant technical field, the connection between the end cover and the shell or support in the filter element assembly is often installed by rotating the card to replace the core. Since the filter element is provided with one end of the water inlet and the water outlet and the end cover connection end are axially opposite to each other, when replacing the filter element assembly, it is necessary to overcome the rotational resistance while also overcoming the axial pressure difference between the inlet and outlet water, which makes it difficult for users to replace the filter element and affects the user experience.

[0006] A water purifier is a device that can process water containing impurities and harmful substances to make it pure and drinkable. Its main function is to filter out suspended matter, bacteria, viruses, heavy metals and other harmful substances in the water, while retaining minerals and trace elements in the water that are beneficial to the human body. There are many types of water purifiers. According to their different filtration methods, they can be mainly divided into reverse osmosis water purifiers, ultrafiltration water purifiers, activated carbon water purifiers, ceramic filtration water purifiers, etc. When assembling a water purifier or replacing the filter element, the filter element assembly process is relatively complicated, resulting in a poor filter element replacement experience.

[0007] Summary of the Invention

[0008] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a filter element assembly that reduces the screwing force required when disassembling the filter element assembly, making it easier for users to replace the filter element and improving the user experience.

[0009] To this end, the present application also proposes a filter element assembly, which reduces the installation resistance during assembly of the filter element assembly, making it easier for users to change the element and improving the user experience.

[0010] To this end, the present application also proposes a filter element assembly and a water purification device, which realizes the rapid and accurate connection between the filter element and the waterway plate interface by setting limiting ribs and a limiting groove with a bell mouth.

[0011] The present application also provides a water purification device.

[0012] A filter element assembly according to the present application includes:

[0013] A filter element seat body, the filter element seat body having a mounting cavity and a mounting opening communicating with the mounting cavity, an outlet groove being provided on an inner wall of the mounting opening, the outlet groove being obliquely extended along the circumference of the mounting opening, and the outlet groove being communicated with the mounting opening;

[0014] A filter element body, wherein the filter element body is disposed in the installation cavity, one end of the filter element body is plugged into the waterway plate, and the other end of the filter element body is provided with a rotating connection portion;

[0015] The end cover is correspondingly arranged at the installation port, and the end cover is rotatably connected to the filter element body through the rotating connection portion. A snap-fit ​​protrusion corresponding to the guide groove is provided on the outer peripheral wall of the end cover, and the snap-fit ​​protrusion can slide along the guide groove to axially bring part of the filter element body away from the installation cavity.

[0016] In some embodiments, the locking protrusion has an inclined end surface and an abutting protrusion.

[0017] In some embodiments, the abutting protrusion is provided at an end of one side of the inclined end surface close to the guide groove.

[0018] In some embodiments, the abutting protrusion abuts and cooperates with the groove wall of the guide groove.

[0019] In some embodiments, the outlet channel includes an outlet wall.

[0020] In some embodiments, the guide wall is arranged in a streamlined manner along the circumference of the installation opening.

[0021] In some embodiments, the outlet wall includes a first outlet segment and a second outlet segment.

[0022] In some embodiments, the curvature of the first lead-out segment is greater than the curvature of the second lead-out segment.

[0023] In some embodiments, the central angle corresponding to the arc length of the first lead-out section extending circumferentially along the installation opening is α.

[0024] In some embodiments, α is greater than or equal to 10°.

[0025] In some embodiments, the inclination of the inclined end surface is greater than the inclination of the outlet wall.

[0026] In some embodiments, the end cap is raised toward a side away from the filter element body to form a gripping portion.

[0027] In some embodiments, an outer peripheral edge of one end of the gripping portion away from the filter element body is protruded to form an undercut.

[0028] In some embodiments, a protrusion distance H of the grip portion along the axial direction of the end cap is greater than or equal to 12 mm.

[0029] In some embodiments, the outer periphery of the end cap is provided with a flange portion toward the filter element body.

[0030] In some embodiments, the flange cover is provided on one end of the filter element body where the rotating connection portion is provided.

[0031] In some embodiments, the locking protrusion is provided on the outer wall surface of the flange portion.

[0032] The present application also proposes a water purification device, which includes the filter element assembly, the filter element assembly including a filter element seat body, a filter element body and an end cover, the filter element seat body having an installation cavity and an installation port connected to the installation cavity, the inner wall of the installation port being provided with a lead-out groove, the lead-out groove being arranged to extend obliquely along the circumference of the installation port, and the lead-out groove being connected to the installation port; the filter element body is arranged in the installation cavity, one end of the filter element body is plugged into the waterway plate, and the other end of the filter element body is provided with a rotating connection portion; the end cover is correspondingly arranged to the installation port, the end cover is rotatably connected to the filter element body through the rotating connection portion, and a clamping protrusion corresponding to the lead-out groove is provided on the outer peripheral wall of the end cover, the clamping protrusion can slide along the lead-out groove to axially move part of the filter element body away from the installation cavity.

[0033] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0034] The present application provides a guide groove on the inner wall of the installation port and a snap-on protrusion on the outer peripheral wall of the end cap. Since the guide groove extends obliquely along the circumference of the installation port, and the snap-on protrusion and the guide groove cooperate with each other in a point-to-surface manner, so as to be axially removed from the installation cavity. When the user rotates the end cap, the snap-on protrusion can slide along the guide groove that extends obliquely along the circumference. In this way, the smoothness and stability of the rotational cooperation between the end cap and the installation port can be enhanced, and the pressure difference force existing after the filter element body and the waterway plate are connected can be better overcome to separate the waterway plate and the filter element body, and part of the filter element body can be axially removed from the installation cavity. This can reduce the screwing force that the user needs to apply when removing the filter element, making it easier for the user to replace the filter element and improving the user experience.

[0035] Another filter element assembly according to the present application includes:

[0036] A filter element seat body, the filter element seat body having a mounting cavity and a mounting opening communicating with the mounting cavity, wherein a guide groove is provided on an inner wall of the mounting opening;

[0037] A filter element body, wherein the filter element body is disposed in the installation cavity, one end of the filter element body is plugged into the waterway plate, and the other end of the filter element body is provided with a rotating connection portion;

[0038] An end cap, the end cap being correspondingly disposed at the mounting opening, the end cap being rotatably connected to the filter element body via the rotatable connection portion, the outer peripheral wall of the end cap being provided with a snap-fit ​​protrusion corresponding to the guide groove, the snap-fit ​​protrusion being able to slide along the guide groove to lock or unlock the position of the filter element body in the mounting cavity;

[0039] Wherein, the inclination of the notch end of the guide groove is different from the inclination angle of the introduction end of the clamping protrusion.

[0040] In some embodiments, the guide groove includes a first guide surface provided at the inlet end.

[0041] In some embodiments, the first guide surface is inclined along the circumference of the mounting opening.

[0042] In some embodiments, the engaging protrusion includes a second guide surface for setting an introduction end.

[0043] In some embodiments, the second guide surface is inclined along the circumference of the end cover.

[0044] In some embodiments, the angle α1 between the first guide surface and the axial direction is different from the angle β1 between the second guide surface and the cross section.

[0045] In some embodiments, the guide groove further includes a first abutment surface.

[0046] In some embodiments, the first abutting surface is connected to an end of the first guide surface away from the notch.

[0047] In some embodiments, the locking protrusion includes a second abutting surface.

[0048] In some embodiments, the second abutting surface is connected to a side of the second guide surface away from the introduction end.

[0049] In some embodiments, the second abutting surface is extended along the circumference of the end cover.

[0050] In some embodiments, the first abutting surface and the second abutting surface are arranged to abut against each other.

[0051] In some embodiments, the angle α1 between the first guide surface and the axial direction is greater than or equal to 30°.

[0052] In some embodiments, an angle β1 between the second guide surface and a cross section perpendicular to the axial direction of the end cover is greater than or equal to 30°.

[0053] In some embodiments, the bottom wall of the guide groove is inclined.

[0054] In some embodiments, the angle between the bottom wall of the groove and the cross section perpendicular to the axial direction of the filter element seat body is γ1.

[0055] In some embodiments, γ1 is greater than or equal to β1.

[0056] In some embodiments, the end cap is raised toward a side away from the filter element body to form a gripping portion.

[0057] In some embodiments, a protrusion distance H1 of the gripping portion along the axial direction of the end cap is greater than or equal to 12 mm.

[0058] In some embodiments, the outer periphery of the end cap is provided with a flange portion toward the filter element body.

[0059] In some embodiments, the flange cover is provided on one end of the filter element body where the rotating connection portion is provided.

[0060] In some embodiments, the locking protrusion is provided on the outer wall surface of the flange portion.

[0061] The present application also proposes a water purification device, which includes a housing and the filter element assembly, and the filter element assembly includes a filter element seat body, a filter element body and an end cover, the filter element seat body has an installation cavity and an installation port connected to the installation cavity, and a guide groove is provided on the inner wall of the installation port; the filter element body is arranged in the installation cavity, one end of the filter element body is plugged into the waterway plate, and the other end of the filter element body is provided with a rotating connection part; the end cover is correspondingly arranged at the installation port, and the end cover is rotatably connected to the filter element body through the rotating connection part, and a snap-on protrusion corresponding to the guide groove is provided on the outer peripheral wall of the end cover, and the snap-on protrusion can slide along the guide groove to lock or unlock the position of the filter element body in the installation cavity; wherein the inclination of the notch end of the guide groove is different from the inclination angle of the introduction end of the snap-on protrusion.

[0062] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0063] By differentiating the inclination angles of the notch end of the guide groove and the lead-in end of the clipping protrusion, the present invention replaces the original surface-to-surface contact between the lead-in end of the clipping protrusion and the notch of the guide groove with contact between abutment points and abutment surfaces during filter element assembly. This makes it easier for the clipping protrusion to slide along the guide groove, thereby reducing installation resistance. Due to the special design of the guide groove and clipping protrusion, the position of the filter element body can be more easily adjusted and locked, making it easier for users to replace the filter element, thereby improving the user experience.

[0064] A filter element assembly proposed in this application includes:

[0065] A filter element body, wherein the outer peripheral wall of the filter element body is provided with limiting ribs;

[0066] A filter element mounting seat, wherein the filter element mounting seat has an installation cavity inside, and one side of the installation cavity has an opening, the filter element body is suitable for being installed in the installation cavity through the opening, a limiting groove is provided on the inner wall of the installation cavity, the limiting rib is suitable for sliding along the limiting groove, the limiting rib and the limiting groove cooperate to limit the rotation of the filter element body in its circumferential direction, and a bell mouth is provided at one end of the limiting groove, and the bell mouth is connected to the opening.

[0067] In some embodiments, there are multiple limiting ribs, and the multiple limiting ribs are spaced apart along the circumferential direction of the filter element body.

[0068] In some embodiments, the width of the limiting rib is 2mm-5mm.

[0069] In some embodiments, the limiting ribs are linear.

[0070] In some embodiments, the end of the limiting rib has a guiding slope.

[0071] In some embodiments, the filter element body comprises:

[0072] The main body portion, the limiting rib is provided on the outer peripheral wall of the main body portion, the main body portion is provided in the installation cavity, and the main body portion is slidable along the length direction of the limiting groove;

[0073] The cover body is arranged on the end of the main body, a part of the structure of the cover body is located in the opening, and the cover body is rotatable relative to the main body.

[0074] In some embodiments, in the length direction of the limiting rib, the width of the cover is smaller than the length of the limiting rib.

[0075] In some embodiments, the cover body is provided with a rotating ridge.

[0076] In some embodiments, a rotation groove is provided on the inner peripheral wall of the installation cavity.

[0077] In some embodiments, the rotation groove extends along a circumferential direction of the body portion.

[0078] In some embodiments, the limiting groove extends along the length direction of the main body.

[0079] In some embodiments, with the cooperation between the rotating protrusion and the rotating groove, and the cooperation between the limiting groove and the limiting rib, the cover body rotates relative to the main body while the cover body and the main body move along the direction of the limiting groove.

[0080] In some embodiments, the opening of the rotation groove is connected to the bell mouth.

[0081] The present application also provides a water purification device, comprising:

[0082] A filter element assembly, wherein the filter element assembly is the filter element assembly described above;

[0083] The filter element assembly is arranged in the casing, the casing and the filter element mounting seat of the filter element assembly are an integrally formed part, and the opening of the filter element assembly is arranged on the casing.

[0084] According to the filter element assembly and water purification device of the embodiment of the present application, the movement range of the limiting rib is limited by utilizing the limiting effect of the limiting groove, and thus the movement range of the filter element body can be limited; further, by providing a bell mouth at one end of the limiting groove, not only can the guiding effect of the bell mouth be utilized to guide the limiting rib to fit into the limiting groove, but the bell mouth also has the advantages of a wide mouth for entry and a narrow mouth for exit, thereby facilitating the limiting rib to fit into the limiting groove.

[0085] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0087] FIG1 is a schematic structural diagram of an embodiment of a water purification device provided in an embodiment of the present application;

[0088] FIG2 is a partial cross-sectional view of the filter element assembly during assembly according to an embodiment of the present application;

[0089] Figure 3 is an enlarged view of point A in Figure 2;

[0090] FIG4 is a schematic structural diagram of the housing in FIG1 ;

[0091] Figure 5 is a partial enlarged view of the installation port in Figure 1;

[0092] Figure 6 is a schematic diagram of the assembly of the filter element body and the end cap;

[0093] FIG7 is a schematic diagram of the assembly of the filter element body and the end cap in FIG6 from another perspective;

[0094] FIG8 is a schematic structural diagram of an embodiment of a water purification device provided in an embodiment of the present application;

[0095] FIG9 is a partial cross-sectional view of the filter element assembly during assembly according to an embodiment of the present application;

[0096] FIG10 is an enlarged view of point A1 in FIG9 ;

[0097] FIG11 is a cross-sectional view of the housing in FIG8 ;

[0098] Figure 12 is a schematic diagram of the assembly of the filter element body and the end cap;

[0099] FIG13 is a schematic diagram of a partial structure of a water purification device according to an embodiment of the present application;

[0100] FIG14 is a schematic diagram of a partial structure of FIG13;

[0101] FIG15 is a cross-sectional view of a water purification device according to an embodiment of the present application;

[0102] FIG16 is a schematic diagram of a partial structure of FIG15;

[0103] FIG17 is a schematic structural diagram of a filter element body of a water purification device according to an embodiment of the present application; and

[0104] FIG18 is a schematic structural diagram of a filter element body of a water purification device according to an embodiment of the present application.

[0105] Figure numerals: 10, water purification device; 100, filter element assembly; 110, filter element seat; 111, installation cavity; 112, installation port; 113, outlet groove; 113a, outlet wall; 113b, first outlet section; 113c, second outlet section; 120, filter element body; 130, end cover; 131, snap-fit ​​protrusion; 131a, inclined end face; 131b, abutting protrusion; 132, gripping portion; 132a, undercut; 133, flange portion; 200, outer shell. 1-10. Water purification device; 1-100. Filter element assembly; 1-110. Filter element seat; 1-111. Mounting cavity; 1-112. Mounting opening; 1-113. Guide groove; 1-113a. First guide surface; 1-113b. First abutting surface; 1-113c. Groove bottom wall; 1-120. Filter element body; 1-130. End cover; 1-131. Snap-fit ​​protrusion; 1-131a. Second guide surface; 1-131b. Second abutting surface; 1-132. Grip portion; 1-133. Flanged portion; 1-200. Housing. 2-1000, water purification device; 2-200, housing; 2-100, filter element assembly; 2-110, filter element body; 2-111, limiting rib; 2-112, guide slope; 2-113, main body; 2-114, cover; 2-115, rotating ridge; 2-116, water outlet pipe; 2-117, handle; 2-120, filter element mounting seat; 2-121, mounting cavity; 2-122, opening; 2-123, limiting groove; 2-124, bell mouth; 2-125, rotating groove. DETAILED DESCRIPTION

[0106] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0107] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0108] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0109] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0110] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0111] Water purifiers are water treatment devices that deeply filter and purify water according to specific usage requirements. They effectively remove rust, sand, and colloids from water, as well as absorb residual chlorine, odor, discoloration, pesticides, and other chemicals. They effectively remove bacteria, pathogens, toxins, heavy metals, and other impurities from water. They are widely used in both residential and commercial applications.

[0112] In the relevant technical field, the connection between the end cover and the shell or support in the filter element assembly is often installed by rotating the card to replace the core. Since the filter element is provided with one end of the water inlet and the water outlet and the end cover connection end are axially opposite to each other, when replacing the filter element assembly, it is necessary to overcome the rotational resistance while also overcoming the axial pressure difference between the inlet and outlet water, which makes it difficult for users to replace the filter element and affects the user experience.

[0113] The present application provides a filter element assembly and a water purification device.

[0114] In the embodiment of the present application, as shown in Figures 1 to 3, the filter element assembly 100 includes a filter element seat body 110, a filter element body 120 and an end cap 130. The filter element seat body 110 has a mounting cavity 111 and a mounting port 112 communicating with the mounting cavity 111. The inner wall of the mounting port 112 is provided with a guide groove 113, which extends along the circumference of the mounting port 112 and is connected to the mounting port 112. The filter element body 120 is arranged in the mounting cavity 111. 11, one end of the filter element body 120 is plugged into the waterway plate, and the other end of the filter element body 120 is provided with a rotating connection part; the end cover 130 is correspondingly arranged at the installation opening 112, and the end cover 130 is rotatably connected to the filter element body 120 through the rotating connection part. The outer peripheral wall of the end cover 130 is provided with a snap-in protrusion 131 corresponding to the lead-out groove 113, and the snap-in protrusion 131 can slide along the lead-out groove 113 to bring part of the filter element body 120 axially away from the installation cavity 111.

[0115] The filter element seat body 110 can be a mounting support provided separately from the housing 200 or can be formed integrally with the housing 200. A mounting cavity 111 and a mounting opening 112 connected to the mounting cavity 111 are formed on the mounting seat body. The mounting cavity 111 provides a stable mounting space for the filter element body 120. The mounting opening 112 allows the filter element body 120 to be easily inserted and removed. It also ensures that water or other fluids can flow into and pass through the filter element body 120. A plurality of axially symmetrical guide grooves are provided on the inner wall of the mounting opening 112. The guide grooves provide directional guidance so that the snap-in protrusions 131 on the end cover 130 can accurately slide into the guide grooves, ensuring the correct installation position of the filter element body 120.

[0116] The filter body 120 is positioned within the mounting cavity 111. One end of the filter body 120 is plugged into the waterway plate, facilitating installation between the two while simplifying the plate's structural design and reducing production costs. A rotating connection is provided at the other end of the filter body 120, allowing for a rotational connection between the end cap 130 and the filter body 120. This allows the end cap 130 to limit the axial position between the filter body 120 and the waterway plate, eliminating the need for rotation of the filter body 120 during mounting. This reduces the number of rotating components on the waterway plate, further simplifying the waterway plate's structure and making operation more convenient for the user.

[0117] End cap 130 is positioned corresponding to mounting opening 112 and pivotally connected to filter body 120 via a pivoting connection, ensuring that end cap 130 tightly covers mounting opening 112. When filter cartridge assembly 100 is installed in the waterway system, end cap 130 secures filter body 120 tightly within mounting cavity 111 of filter base 110. This prevents filter body 120 from rotating or moving during operation, thereby ensuring proper operation of filter assembly 100. Furthermore, when filter cartridge assembly 100 needs to be replaced, rotating end cap 130 causes engaging protrusion 131 to slide along outlet groove 113, thereby moving filter body 120 along its axis toward mounting opening 112. The sliding engagement of engaging protrusion 131 with outlet groove 113 effectively overcomes the pressure differential between filter body 120 and the waterway plate, allowing filter body 120 to be removed from mounting cavity 111 with less effort.

[0118] The present application provides a guide groove 113 on the inner wall of the installation opening 112 and a snap-on protrusion 131 on the outer peripheral wall of the end cap 130. Since the guide groove 113 extends obliquely along the circumference of the installation opening 112, and the snap-on protrusion 131 and the guide groove 113 cooperate with each other in a point-to-surface manner, so as to axially remove the filter from the installation cavity 111. When the user rotates the end cap 130, the snap-on protrusion 131 can slide along the guide groove 113, which extends obliquely along the circumference. This can enhance the smoothness and stability of the rotational fit between the end cap 130 and the installation opening 112, and can better overcome the pressure differential force existing after the filter element body 120 and the waterway plate are connected, so as to separate the waterway plate and the filter element body 120 and partially remove the filter element body 120 from the installation cavity 111. This can reduce the screwing force required by the user when removing the filter element, making it easier for the user to replace the filter element and improving the user experience.

[0119] Referring to Figures 2 to 6 , in some embodiments, the engaging protrusion 131 includes an inclined end surface 131a and an abutting protrusion 131b. The abutting protrusion 131b is located at the end of the inclined end surface 131a near the outlet groove 113, and the abutting protrusion 131b abuts against the wall of the outlet groove 113. It will be appreciated that in this embodiment, the abutting protrusion 131b is a rounded protrusion structure that can slide and partially abut against the wall of the outlet groove 113, reducing the contact area between the engaging protrusion 131 and the outlet groove 113 and lowering frictional resistance. This reduces the rotational force required when the user disassembles and assembles the filter element assembly 100, thereby improving user convenience.

[0120] Referring to Figures 2 to 4 , in some embodiments, the lead-out groove 113 includes a lead-out wall 113a, which is arranged in a streamlined manner along the circumference of the mounting opening 112. The lead-out wall 113a includes a first lead-out section 113b and a second lead-out section 113c, with the curvature of the first lead-out section 113b being greater than that of the second lead-out section 113c. It will be appreciated that the streamlined arrangement of the lead-out wall 113a improves the smoothness of the rotational engagement between the engaging protrusion 131 and the lead-out groove 113, allowing the engaging protrusion 131 to pass through the lead-out groove 113 more smoothly. Because the pressure difference between the waterway plate and the filter body 120 needs to be overcome during the initial disassembly of the filter element body 120, this embodiment configures the first lead-out section 113b as a relatively large curved surface. This allows the engaging protrusion 131 to increase the distance the filter element body 120 moves along its axis when the first lead-out section 113b slides, thereby better overcoming the pressure difference. The second lead-out section 113c has a more gradual curvature relative to the first lead-out section 113b, allowing the engaging protrusion 131 to gradually slide out of the lead-out groove 113, guiding the end cap 130 out of the mounting opening 112. This improves the assembly efficiency of the filter element assembly 100 while reducing the risk of damage due to improper operation or excessive force.

[0121] Specifically, referring to FIG. 4 and FIG. 5 , in some embodiments, the central angle corresponding to the arc length of the first lead-out section 113 b extending circumferentially along the mounting opening 112 is α, where α is greater than or equal to 10°. It can be understood that the size of the central angle corresponding to the arc length of the first lead-out section 113b extending circumferentially along the installation port 112 is closely related to the curvature of the first lead-out section 113b and the length of the plug-in column between the interface of the filter element body 120 and the waterway plate. The longer the length of the plug-in column, the greater the distance the filter element body 120 needs to be axially displaced, and the larger the central angle α corresponding to the first lead-out section 113b, the greater the axial distance of the clamping protrusion 131 when the first lead-out section 113b slides. Therefore, the size of the central angle corresponding to the arc length of the first lead-out section 113b extending circumferentially along the installation port 112 can be set according to the length of the plug-in column between the interface of the filter element body 120 and the waterway plate. The longer the length of the plug-in column, the larger the central angle corresponding to the arc length of the first lead-out section 113b extending circumferentially along the installation port 112. In this way, the central angle of the first lead-out section 113b can be increased to increase the fitting ejection distance between the engaging boss and the lead-out groove 113, thereby reducing the rotational force required, and making it easier for the user to perform the core changing operation.

[0122] Referring to Figure 3 , in some embodiments, the inclination of the inclined end surface 131a is greater than that of the outlet wall 113a. It will be appreciated that this greater inclination of the inclined end surface 131a allows the inclined end surface 131a to avoid the outlet wall 113a, allowing the engaging protrusion 131 to slide against the outlet wall 113a only through the abutting protrusion 131b, reducing friction and resistance during the sliding process. This also enhances the structural strength of the abutting protrusion.

[0123] 2, 6, and 7, in some embodiments, the end cap 130 is formed with a gripping portion 132 on a side facing away from the filter element body 120. It will be appreciated that in this embodiment, a portion of the end cap 130 protrudes in a direction away from the filter element body 120 to form a gripping shape, so that an operator can conveniently grip and operate the end cap 130. The gripping portion 132 is formed on a side of the end cap 130 facing away from the filter element body 120, thereby providing a handle for the operator to hold when replacing or assembling the filter element. The gripping portion 132 can be in a shape that is suitable for the size of a human hand, such as a circle, rectangle, or semicircle, so that the operator can conveniently grip and operate the end cap 130.

[0124] 7 , in some embodiments, the outer peripheral edge of the grip portion 132 away from the filter cartridge body 120 is protruded to form an undercut 132a. It is understandable that the undercut 132a structure can make it easier for the user to hold the filter cartridge, especially when the grip portion 132 is protruding, so that the user can grasp the filter cartridge more conveniently, thereby making it easier to install, replace or handle the filter cartridge. In addition, by designing the undercut 132a structure on the grip portion 132, the convenience of the user in operating the filter cartridge can be improved. Whether installing the filter cartridge into the device or replacing the filter cartridge, the undercut 132a structure can make it easier and more secure for the user to hold the filter cartridge. This improves the user-friendliness of the product, and the user will feel more comfortable and convenient when using the filter cartridge, thereby improving the overall user experience.

[0125] Specifically, the raised distance of the grip portion 132 along the axis of the end cap 130 is greater than or equal to 12 mm. It will be appreciated that a larger raised distance of the grip portion 132 provides a better grip, enabling the user to better control and operate the filter element. A larger raised distance provides better grip and comfort. The specific raised distance can be selected based on the size of the filter element or the desired configuration and is not specifically limited herein.

[0126] Referring to Figure 6, in some embodiments, the outer periphery of the end cap 130 is provided with a flange portion 133 facing the filter cartridge body 120. The flange portion 133 is provided to cover the end of the filter cartridge body 120 provided with the rotating connection portion, and the snap-on protrusion 131 is provided on the outer wall surface of the flange portion 133. It will be understood that the provision of the flange portion 133 allows the end cap 130 to cover one end of the filter cartridge body 120 and provide an embedded space to accommodate the rotating connection portion of the filter cartridge body 120. The combination of the rotating connection portion and the end cap 130 allows the end cap 130 to be securely fixed to the filter cartridge body 120. At the same time, the flange portion 133 also provides a location for the snap-on protrusion 131.

[0127] The present application also proposes a water purification device 10, which includes a housing 200 and a filter element assembly 100. The specific structure of the filter element assembly 100 refers to the above embodiment. Since the water purification device 10 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0128] The present application also provides a filter element assembly and a water purification device.

[0129] In the embodiment of the present application, as shown in Figures 8 to 10, the filter element assembly 1-100 includes a filter element seat body 1-110, a filter element body 1-120 and an end cover 1-130. The filter element seat body 1-110 has an installation cavity 1-111 and an installation port 1-112 connected to the installation cavity 1-111. The inner wall of the installation port 1-112 is provided with a plurality of axially symmetrical guide grooves 1-113; the filter element body 1-120 is arranged in the installation cavity 1-111, one end of the filter element body 1-120 is plugged into the waterway plate, and the other end of the filter element body 1-120 is connected to the waterway plate. A rotating connection portion is provided; the end cover 1-130 is correspondingly arranged at the installation port 1-112, and the end cover 1-130 is rotatably connected to the filter element body 1-120 through the rotating connection portion, and a snap-in protrusion 1-131 corresponding to the guide groove 1-113 is provided on the outer peripheral wall of the end cover 1-130, and the snap-in protrusion 1-131 can slide along the guide groove 1-113 to lock or unlock the position of the filter element body 1-120 in the installation cavity 1-111; wherein, the inclination of the notch end of the guide groove 1-113 is different from the inclination angle of the introduction end of the snap-in protrusion 1-131.

[0130] The filter element seat body 1-110 can be a mounting support provided separately from the outer shell 1-200 or can be formed integrally with the outer shell 1-200. A mounting cavity 1-111 and a mounting port 1-112 connected to the mounting cavity 1-111 are formed on the mounting seat body. The mounting cavity 1-111 provides a stable mounting space for the filter element body 1-120. The mounting port 1-112 allows the filter element body 1-120 to be easily inserted and removed. It also ensures that water or other fluids can flow into and pass through the filter element body 1-120. A plurality of axially symmetrical guide grooves 1-113 are provided on the inner wall of the mounting port 1-112. The guide grooves 1-113 provide directional guidance so that the snap-in protrusions 1-131 on the end cover 1-130 can accurately slide into the guide grooves 1-113, ensuring the correct installation position of the filter element body 1-120.

[0131] The filter element body 1-120 is disposed within the mounting cavity 1-111. One end of the filter element body 1-120 is plugged into the waterway plate, facilitating installation between the waterway plate and the filter element body 1-120 while simplifying the structural design of the waterway plate and reducing production costs. The other end of the filter element body 1-120 is provided with a rotating connection portion, thereby allowing the end cap 1-130 to be rotatably connected to the filter element body 1-120. In this way, the end cap 1-130 can be used to limit the axial direction between the filter element body 1-120 and the waterway plate, so that the filter element body 1-120 does not need to rotate during the fixing process, reducing the number of rotating structures provided on the waterway plate, further simplifying the structure of the waterway plate, and making it easier for users to operate.

[0132] The end cap 1-130 is disposed correspondingly to the mounting opening 1-112. The end cap 1-130 is rotatably connected to the filter element body 1-120 via a rotating connection portion, ensuring that the end cap 1-130 can tightly cover the mounting opening 1-112 and that the filter element body 1-120 is separated from the waterway plate. A snap-fit ​​protrusion 1-131 corresponding to the guide groove 1-113 is provided on the outer peripheral wall of the end cap 1-130. The snap-fit ​​protrusion 1-131 can slide along the guide groove 1-113. When the end cap 1-130 is rotated to the correct position, the snap-fit ​​protrusion 1-131 slides into the guide groove 1-113, thereby locking the end cap 1-130 in the correct position. This ensures the stability and safety of the end cap 1-130. The inclination of the slot end of the guide groove 1-113 is different from the inclination angle of the introduction end of the snap-fit ​​protrusion 1-131. In this way, when the snap-fit ​​protrusion 1-131 slides into the guide groove 1-113, the inclination angle of its introduction end is different from the inclination of the guide groove 1-113, which makes the sliding process smoother and reduces the installation resistance.

[0133] The present application makes the inclination angle of the notch end of the guide groove 1-113 different from the inclination angle of the introduction end of the clamping protrusion 1-131. When the filter element assembly 1-100 is assembled, the original surface-to-surface contact between the introduction end of the clamping protrusion 1-131 and the notch of the guide groove 1-113 is replaced with contact between an abutment point and an abutment surface. This makes it easier for the clamping protrusion 1-131 to slide along the guide groove 1-113, thereby reducing installation resistance. Due to the special design of the guide groove 1-113 and the clamping protrusion 1-131, the position of the filter element body 1-120 can be more easily adjusted and locked, which makes it easier for users to replace the filter element, thereby improving the user experience.

[0134] Referring to Figures 10 to 12, in some embodiments, the guide groove 1-113 includes a first guide surface 1-113a provided at the inlet end, and the first guide surface 1-113a is inclined along the circumference of the mounting port 1-112. The snap-fit ​​protrusion 1-131 includes a second guide surface 1-131a provided at the inlet end, and the second guide surface 1-131a is inclined along the circumference of the end cover 1-130. The angle α1 between the first guide surface 1-113a and the axial direction is different from the angle β1 between the second guide surface 1-131a and the cross section. It can be understood that in this embodiment, the entrance end of the guide groove 1-113 and the introduction end of the snap-fit ​​protrusion 1-131 are correspondingly provided with a first guide surface 1-113a and a second guide surface 1-131a having different inclinations. The inclination of the first guide surface 1-113a may be greater than the inclination of the second guide surface 1-131a, or the inclination of the first guide surface 1-113a may be less than the inclination of the second guide surface 1-131a. In this way, by setting the inclination of one guide surface to be larger and the inclination of the other guide surface to be smaller, the first guide surface 1-113a and the second guide surface 1-131a can be prevented from abutting against each other, and a sliding fit between a point and a surface can be formed instead, thereby effectively reducing friction, reducing resistance during connection, and improving the smoothness of the connection.

[0135] 11 and 12, in some embodiments, the guide groove 1-113 further includes a first abutting surface 1-113b, which is connected to the end of the first guide surface 1-113a away from the slot, and the snap-fit ​​protrusion 1-131 includes a second abutting surface 1-131b, which is connected to the side of the second guide surface 1-131a away from the introduction end, and the second abutting surface 1-131b is extended along the circumference of the end cover 1-130, and the first abutting surface 1-113b and the second abutting surface 1-131b are abutted against each other. It can be understood that during the use of the filter element body 1-120, since the water channel is arranged at the end where the water channel plate is inserted, the filter element body 1-120 will give the end cover 1-130 an axial force away from the end of the water channel plate. In order to improve the axial abutment force between the end cover 1-130 and the filter element seat body 1-110, the present embodiment provides a first abutment surface 1-113b at the end of the first guide surface 1-113a facing the bottom of the groove and a second abutment surface 1-131b on the snap-fitting protrusion 1-131. When the snap-fitting protrusion 1-131 is locked with the guide groove 1-113, the abutment cooperation between the first abutment surface 1-113b and the second abutment surface 1-131b provides an axial abutment force for the end cover 1-130, thereby fixing the filter element body 1-120 in the installation cavity 1-111, thereby improving the connection stability and reliability of the filter element assembly 1-100.

[0136] 11 , in some embodiments, the angle α1 between the first guide surface 1-113a and the axial direction is greater than or equal to 30°. It is understandable that the size of the angle α1 between the first guide surface 1-113a and the axial direction in the present application will affect the thickness of the groove wall of the corresponding guide groove 1-113. The smaller the angle α1 between the first guide surface 1-113a and the axial direction, the smaller the thickness of the groove wall corresponding to the first guide surface 1-113a. The smaller the wall thickness, the weaker the structural strength will be, which is not conducive to repeated installation with the filter element assembly 1-100, and the stability and reliability of the connection cannot be guaranteed. Therefore, in this embodiment, the angle α1 between the first guide surface 1-113a and the axial direction is limited to be greater than or equal to 30° to ensure the wall thickness of the groove wall corresponding to the first guide surface 1-113a and the structural strength of the guide groove 1-113.

[0137] 12 , in some embodiments, the angle β1 between the second guide surface 1-131a and the cross section perpendicular to the axial direction of the end cover 1-130 is greater than or equal to 30°. It is understandable that the size of the angle β1 between the second guide surface 1-131a and the cross section in the present application will also affect the axial thickness of the corresponding snap-fit ​​protrusion 1-131. The smaller the angle β1 between the second guide surface 1-131a and the cross section, the smaller the axial thickness corresponding to the second guide surface 1-131a. The smaller the wall thickness, the weaker the structural strength will be, which is not conducive to repeated installation with the filter element assembly 1-100, and the stability and reliability of the connection cannot be guaranteed. Therefore, in this embodiment, the angle β1 between the second guide surface 1-131a and the cross section is limited to be greater than or equal to 30° to ensure the axial thickness of the snap-fit ​​protrusion 1-131 corresponding to the second guide surface 1-131a and the structural strength of the snap-fit ​​protrusion 1-131.

[0138] 11 and 12 , in some embodiments, the bottom wall 1-113c of the guide groove 1-113 is inclined, and the angle between the bottom wall 1-113c and the cross section perpendicular to the axial direction of the filter element seat body 120 is γ1, wherein γ1 is greater than or equal to β1. It can be understood that when the engaging protrusion 1-131 slides into the bottom of the guide groove 1-113, the locking between the end cap 1-130 and the mounting opening 1-112 is completed. In this embodiment, the bottom wall 1-113c of the guide groove 1-113 is set to an inclined angle that is adapted to the second guide surface 1-131a corresponding thereto after the engaging protrusion 1-131 is engaged and fixed, thereby enabling the guide groove 1-113 to engage with the engaging protrusion 1-131. In other embodiments, the groove bottom wall 1-113c can also be set to have a larger inclination than the inclination of the second guide surface 1-131a, thereby improving the matching degree of the guide groove 1-113 to the snap-fit ​​protrusions 1-131 with different inclinations and increasing the applicability of the guide groove 1-113.

[0139] 9 and 11 , in some embodiments, the end cap 1-130 is raised on the side facing away from the filter element body 1-120 to form a gripping portion 1-132. It is understandable that in this embodiment, a portion of the end cap 1-130 protrudes in a direction away from the filter element body 1-120 to form a grippable shape, so that the operator can easily hold the end cap 1-130 and operate it. The end cap 1-130 is raised on the side facing away from the filter element body 1-120 to form the gripping portion 1-132, thereby providing a handle for the operator who is replacing or assembling the filter element to hold. The shape of the gripping portion 1-132 can be a shape suitable for the size of a human hand, such as a circle, rectangle, or semicircle, so that the operator can easily hold and operate it.

[0140] Specifically, the raised distance H1 of the grip portion 1-132 along the axis of the end cap 1-130 is greater than or equal to 12 mm. It will be appreciated that a larger raised distance of the grip portion 1-132 can provide a better handle, enabling the user to better control and operate the filter element. A larger raised distance can provide better grip and comfort. The specific raised distance can be selected based on the size of the filter element or the required setting, and is not specifically limited here.

[0141] 12 , in some embodiments, the outer periphery of the end cap 1-130 is provided with a flange portion 1-133 facing the filter cartridge body 1-120. The flange portion 1-133 is provided to cover one end of the filter cartridge body 1-120 provided with a rotating connection portion, and a snap-in protrusion 1-131 is provided on the outer wall surface of the flange portion 1-133. It can be understood that by providing the flange portion 1-133, the end cap 1-130 can cover one end of the filter cartridge body 1-120 and provide an embedded space to accommodate the rotating connection portion of the filter cartridge body 1-120. By combining the rotating connection portion and the end cap 1-130, the end cap 1-130 can be firmly fixed to the filter cartridge body 1-120. At the same time, the flange portion 1-133 can also provide a position for the provision of the snap-in protrusion 1-131.

[0142] The present application also proposes a water purification device 1-10, which includes a housing 1-200 and a filter element assembly 1-100. The specific structure of the filter element assembly 1-100 refers to the above-mentioned embodiment. Since the present water purification device 1-10 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0143] The following continues with reference to the accompanying drawings to describe the filter element assembly 2-100 and the water purification device 2-1000 according to the embodiment of the present application. It should be noted that the water purification device 2-1000 can be a water purifier, and the filter element assembly 2-100 is arranged in the water purifier to filter water. A water purifier is a device that can treat a water source containing impurities and harmful substances to make it pure and drinkable. Its main function is to filter out suspended matter, bacteria, viruses, heavy metals and other harmful substances in the water, while retaining minerals and trace elements in the water that are beneficial to the human body. There are many types of water purifiers. According to their different filtration methods, they can be mainly divided into reverse osmosis water purifiers, ultrafiltration water purifiers, activated carbon water purifiers, ceramic filtration water purifiers, etc. In general, a water purifier is an important equipment that can effectively improve water quality and ensure the safety of people's drinking water.

[0144] As shown in FIG. 13 and FIG. 14 , in some embodiments, the filter element assembly 2-100 includes: a filter element body 2-110 and a filter element mounting seat 2-120.

[0145] Specifically, the filter element body 2-110 has a filtering function. The filter element body 2-110 is provided with a water outlet pipe 2-116. Water entering the filter element body 2-110, wastewater generated after filtration, and pure water can all flow out through the corresponding water outlet pipe 2-116. The water outlet pipe 2-116 is suitable for connecting and communicating with the waterway plate. The waterway plate can be provided with a raw water channel, a wastewater channel, and a pure water channel. There can be one or more water outlet pipes 2-116 on the filter element body 2-110, and each water outlet pipe 2-116 is connected and communicated with a corresponding waterway on the waterway plate.

[0146] As shown in Figures 14 and 15, the filter element mounting seat 2-120 has an installation cavity 2-121 inside, and an opening 2-122 is provided on one side of the installation cavity 2-121. The filter element body 2-110 is suitable for being installed in the installation cavity 2-121 through the opening 2-122. In this way, it is convenient to install the filter element body 2-110 on the filter element mounting seat 2-120. A limiting rib 2-111 is provided on the outer peripheral wall of the filter element body 2-110, and a limiting groove 2-123 is provided on the inner wall of the installation cavity 2-121. The limiting rib 2-111 is suitable for sliding along the limiting groove 2-123. The cooperation between the limiting rib 2-111 and the limiting groove 2-123 is used to limit the rotation of the filter element body 2-110 in its circumferential direction.

[0147] As shown in Figures 15 and 16, the limiting function of the limiting groove 2-123 can be used to limit the movement range of the limiting rib 2-111, and thus the movement range of the filter element body 2-110 can be limited. In conjunction with Figure 14, in order to facilitate the limiting rib 2-111 to fit into the limiting groove 2-123, a bell mouth 2-124 is provided at one end of the limiting groove 2-123, and the bell mouth 2-124 is connected to the opening 2-122. It should be noted that, on the one hand, the bell mouth 2-124 has a guiding function, thereby guiding the limiting rib 2-111 into the limiting groove 2-123; on the other hand, the bell mouth 2-124 has the advantages of a wide mouth for entry and a narrow mouth for exit, thereby facilitating the limiting rib 2-111 to fit into the limiting groove 2-123.

[0148] According to the filter element assembly 2-100 of the embodiment of the present application, the moving range of the limiting rib 2-111 is limited by utilizing the limiting effect of the limiting groove 2-123, and thus the movement range of the filter element body 2-110 can be limited; further, by providing a bell mouth 2-124 at one end of the limiting groove 2-123, not only can the guiding effect of the bell mouth 2-124 be utilized to guide the limiting rib 2-111 to fit into the limiting groove 2-123, but the bell mouth 2-124 also has the advantages of a wide mouth for entry and a narrow mouth for exit, thereby facilitating the limiting rib 2-111 to fit into the limiting groove 2-123.

[0149] According to some embodiments of the present application, there are multiple limiting ribs 2-111, and the multiple limiting ribs 2-111 are spaced apart along the circumferential direction of the filter element body 2-110. In this way, the stability of the filter element body 2-110 and the filter element mounting seat 2-120 can be improved, and the filter element body 2-110 can be effectively prevented from rotating relative to the filter element mounting seat 2-120. In addition, when one of the multiple limiting ribs 2-111 is damaged, the other limiting ribs 2-111 can also play a limiting role, thereby improving the stability and safety of the filter element body 2-110 and the filter element mounting seat 2-120. Correspondingly, when there are multiple limiting ribs 2-111, the filter element mounting seat 2-120 is provided with multiple limiting grooves 2-123, and the multiple limiting grooves 2-123 are arranged in a one-to-one correspondence with the multiple limiting ribs 2-111.

[0150] According to some embodiments of the present application, as shown in FIG18 , the width of the limiting rib 2-111 is 2 mm to 5 mm. This can enhance the structural strength of the limiting rib 2-111, improve the matching stability between the limiting rib 2-111 and the limiting groove 2-123, and prevent the filter element body 2-110 from rotating relative to the filter element mounting seat 2-120. As shown in FIG17 and FIG18 , according to some embodiments of the present application, the limiting rib 2-111 is linear. It can be understood that the limiting rib 2-111 extends in a straight line, so that the limiting rib 2-111 can be smoothly fitted into the limiting groove 2-123, thereby improving the matching convenience between the filter element body 2-110 and the filter element mounting seat 2-120. In addition, the linear limiting rib 2-111 is simple and intuitive in design, has a relatively low processing cost, and is easy to process and install.

[0151] According to some embodiments of the present application, as shown in FIG18 , the end of the limiting rib 2-111 has a guiding slope 2-112. The guiding slope 2-112 has a guiding function, which can guide the filter element body 2-110 into the limiting groove 2-123. For example, when installing the filter element body 2-110 on the filter element mounting seat 2-120, the filter element body 2-110 can be first inserted into the opening 2-122 of the mounting cavity 2-121, and then the guiding slope 2-112 on the limiting rib 2-111 can be used to slide it into the bell mouth 2-124. Under the guiding action of the guiding slope 2-112 and the bell mouth 2-124, the limiting rib 2-111 slides into the limiting groove 2-123, and the limiting rib 2-111 slides along the limiting groove 2-123, and moves the filter element body 2-110 to a predetermined position. Thus, under the guidance of the guide bevel 2-112 and the bell mouth 2-124, the filter element body 2-110 can be smoothly installed in the predetermined position. In addition, it should be noted that the inclined surface on the guide bevel 2-112 not only facilitates demoulding, but also effectively reduces stress concentration, prevents fatigue damage to the limiting rib 2-111, and effectively extends the service life of the limiting rib 2-111.

[0152] As shown in Figures 17 and 18, according to some embodiments of the present application, the filter element body 2-110 further includes: a main body 2-113 and a cover 2-114. Specifically, the limiting rib 2-111 is provided on the outer peripheral wall of the main body 2-113, the main body 2-113 is provided in the installation cavity 2-121, and the main body 2-113 is slidable along the length direction of the limiting groove 2-123. The cover 2-114 is provided on the end of the main body 2-113, and part of the structure of the cover 2-114 is located in the opening 2-122, and the cover 2-114 is rotatable relative to the main body 2-113.

[0153] It can be understood that, in the axial direction of the main body 2-113 or in the direction in which the main body 2-113 moves along the limiting groove 2-123, the main body 2-113 is slidable relative to the filter element mounting seat 2-120, and the main body 2-113 is stationary relative to the filter element mounting seat 2-120; in the circumferential direction of the main body 2-113 or in the circumferential direction in which the main body 2-113 moves along the limiting groove 2-123, the main body 2-113 is stationary relative to the filter element mounting seat 2-120, and the cover 2-114 is rotatable relative to the main body 2-113. On the one hand, this facilitates the assembly of the filter element body 2-110 onto the filter element mounting seat 2-120; on the other hand, it also facilitates the installation of the water outlet pipe 2-116 of the filter element body 2-110 onto the waterway plate.

[0154] In order to facilitate the operator to hold the filter element body 2-110, as shown in Figures 17 and 18, a handle portion 2-117 is provided on the side of the cover body 2-114 away from the main body portion 2-113. The handle portion 2-117 is in the shape of a knob, so that the operator can rotate the cover body 2-114 by holding the handle portion 2-117.

[0155] As shown in FIG18 , according to some embodiments of the present application, in the longitudinal direction of the limiting rib 2-111, the width of the cover body 2-114 is less than the length of the limiting rib 2-111. For example, as shown in FIG18 , the width of the cover body 2-114 is L1, and the length of the limiting rib 2-111 is L2, where L2>L1. By setting the length of the limiting rib 2-111 to be greater than the width of the cover body 2-114, when installing the filter element body 2-110 on the filter element mounting seat 2-120, the filter element body 2-110 can be first inserted into the opening 2-122 of the mounting cavity 2-121. Under the condition that the cover body 2-114 structure blocks the position of the limiting rib 2-111, the assembler can observe the position of the limiting rib 2-111, thereby facilitating the adjustment of the limiting rib 2-111 to the position of the bell mouth 2-124.

[0156] In addition, when the filter element body 2-110 is inserted into the opening 2-122 and becomes misaligned, since the length of the limiting rib 2-111 is greater than the width of the cover body 2-114, the assembler can promptly discover that the position of the limiting rib 2-111 does not correspond to the position of the bell mouth 2-124, thereby facilitating the assembler to promptly adjust the position of the limiting rib 2-111, and further facilitating the assembly of the filter element body 2-110 into the filter element mounting seat 2-120.

[0157] 17 and 18 , according to some embodiments of the present application, a rotating ridge 2-115 is provided on the cover body 2-114, and a rotating groove 2-125 is provided on the inner peripheral wall of the mounting cavity 2-121. The rotating groove 2-125 extends along the circumferential direction of the main body 2-113, and the limiting groove 2-123 extends along the longitudinal direction of the main body 2-113. With the cooperation between the rotating ridge 2-115 and the rotating groove 2-125, and the cooperation between the limiting groove 2-123 and the limiting rib 2-111, the cover body 2-114 rotates relative to the main body 2-113, and the cover body 2-114 and the main body 2-113 move along the direction of the limiting groove 2-123.

[0158] It is understood that under the cooperation of the rotating groove 2-125 and the rotating ridge 2-115, the cover 2-114 plays a role in pushing the main body 2-113 to move, so that the main body 2-113 can move along the extension direction of the limiting groove 2-123, thereby enabling the filter element body 2-110 to move along the extension direction of the limiting groove 2-123 in the installation cavity 2-121, and then enabling the filter element body 2-110 to have an assembly force in its axial direction, so that when the filter element body 2-110 is inserted into the installation cavity 2-121, the filter element body 2-110 also has an assembly force to be plugged into the waterway plate, thereby achieving the purpose of plugging the filter element body 2-110 into the waterway plate. For the sake of convenience, the cooperation of the rotating groove 2-125 and the rotating ridge 2-115 can be understood as a threaded cooperation. In order to facilitate the cooperation between the rotating groove 2-125 and the rotating protrusion 2-115, as shown in Figure 14, the opening 2-122 of the rotating groove 2-125 and the rotating groove 2-125 is connected to the bell mouth 2-124.

[0159] The filter element assembly 2-100 according to the embodiment of the present application is described in detail below in conjunction with Figures 13 to 18. It is worth noting that the following description is merely an exemplary description and does not specifically limit the present application.

[0160] As shown in FIG13 , the filter element assembly 2-100 includes a filter element body 2-110 and a filter element mounting base 2-120. The filter element body 2-110 has a filtering function and is provided with a water outlet pipe 2-116. Water entering the filter element body 2-110, waste water generated after filtration, and pure water can all flow out through the corresponding water outlet pipe 2-116. The water outlet pipe 2-116 is plugged into the waterway plate and is suitable for communicating with the corresponding waterway on the waterway plate.

[0161] As shown in Figures 14 and 15, the filter element mounting seat 2-120 has an internal mounting cavity 2-121, and one side of the mounting cavity 2-121 has an opening 2-122. The filter element body 2-110 is adapted to be mounted in the mounting cavity 2-121 through the opening 2-122. A limiting rib 2-111 is provided on the outer peripheral wall of the filter element body 2-110, and a limiting groove 2-123 is provided on the inner wall of the mounting cavity 2-121. The limiting rib 2-111 is adapted to slide along the limiting groove 2-123. The cooperation between the limiting rib 2-111 and the limiting groove 2-123 is used to limit the rotation of the filter element body 2-110 in its circumferential direction.

[0162] As shown in Figures 17 and 18, the filter element body 2-110 also includes a main body 2-113 and a cover 2-114. The limiting ribs 2-111 are provided on the outer peripheral wall of the main body 2-113. The main body 2-113 is provided in the mounting cavity 2-121. The main body 2-113 is slidable along the length of the limiting groove 2-123. The cover 2-114 is provided on the end of the main body 2-113. Part of the structure of the cover 2-114 is located in the opening 2-122. The cover 2-114 is rotatable relative to the main body 2-113. It can be understood that, in the axial direction of the main body 2-113 or the direction in which the main body 2-113 moves along the limiting groove 2-123, the main body 2-113 is slidable relative to the filter element mounting seat 2-120, and the main body 2-113 is stationary relative to the filter element mounting seat 2-120; in the circumferential direction of the main body 2-113 or the circumferential direction in which the main body 2-113 moves along the limiting groove 2-123, the main body 2-113 is stationary relative to the filter element mounting seat 2-120, and the cover 2-114 is rotatable relative to the main body 2-113. On the one hand, this facilitates the assembly of the filter element body 2-110 onto the filter element mounting seat 2-120; on the other hand, it also facilitates the installation of the water outlet pipe 2-116 of the filter element body 2-110 onto the waterway plate.

[0163] As shown in Figure 18, a rotating ridge 2-115 is provided on the cover body 2-114, and a rotating groove 2-125 is provided on the inner peripheral wall of the installation cavity 2-121. The rotating groove 2-125 extends along the circumferential direction of the main body 2-113, and the limiting groove 2-123 extends along the length direction of the main body 2-113. With the cooperation between the rotating ridge 2-115 and the rotating groove 2-125, and the cooperation between the limiting groove 2-123 and the limiting rib 2-111, the cover body 2-114 rotates relative to the main body 2-113, and the cover body 2-114 and the main body 2-113 move along the direction of the limiting groove 2-123. It can be understood that, with the cooperation of the rotating groove 2-125 and the rotating protrusion 2-115, the cover body 2-114 plays a role in pushing the main body 2-113 to move, so that the main body 2-113 can move along the extension direction of the limiting groove 2-123, so that the filter element body 2-110 can move in the installation cavity 2-121 along the extension direction of the limiting groove 2-123, and then the filter element body 2-110 can have an assembly force in its axial direction, so that when the filter element body 2-110 is inserted into the installation cavity 2-121, the filter element body 2-110 also has the assembly force to be plugged into the waterway plate, so as to achieve the purpose of plugging the filter element body 2-110 into the waterway plate.

[0164] As shown in FIG18 , the width of the limiting rib 2-111 is 2 mm to 5 mm, and the end of the limiting rib 2-111 has a guiding slope 2-112. The guiding slope 2-112 has a guiding function, which can guide the filter element body 2-110 into the limiting groove 2-123. For example, when installing the filter element body 2-110 on the filter element mounting seat 2-120, the filter element body 2-110 can be first inserted into the opening 2-122 of the mounting cavity 2-121, and then the guiding slope 2-112 on the limiting rib 2-111 can be used to slide it into the bell mouth 2-124. Under the guidance of the guiding slope 2-112 and the bell mouth 2-124, the limiting rib 2-111 slides into the limiting groove 2-123, and the limiting rib 2-111 slides along the limiting groove 2-123, and moves the filter element body 2-110 to a predetermined position.

[0165] In the longitudinal direction of the limiting rib 2-111, the width of the cover 2-114 is less than the length of the limiting rib 2-111. For example, as shown in Figure 18, the width of the cover 2-114 is L1, and the length of the limiting rib 2-111 is L2, where L2>L1. By setting the length of the limiting rib 2-111 to be greater than the width of the cover 2-114, when installing the filter element body 2-110 on the filter element mounting seat 2-120, the filter element body 2-110 can be first inserted into the opening 2-122 of the mounting cavity 2-121. Even if the cover 2-114 structure obscures the position of the limiting rib 2-111, the assembler can still observe the position of the limiting rib 2-111, thereby facilitating the adjustment of the limiting rib 2-111 to the position of the bell mouth 2-124.

[0166] As shown in Figures 13 and 15, the water purification device 2-1000 according to the embodiment of the present application includes a housing 2-200 and the filter element assembly 2-100 as described above. Specifically, the filter element assembly 2-100 is arranged in the housing 2-200, and the housing 2-200 and the filter element mounting seat 2-120 of the filter element assembly 2-100 are an integrally formed part, and the opening 2-122 of the filter element assembly 2-100 is provided on the housing 2-200. It should be noted that the filter element mounting seat 2-120 and the housing 2-200 are molded simultaneously through a single injection molding process to construct an integrated part, which can reduce production costs, simplify assembly steps, reduce production costs, and improve production efficiency.

[0167] According to the water purification device 2-1000 of the embodiment of the present application, the moving range of the limiting rib 2-111 is limited by utilizing the limiting function of the limiting groove 2-123, thereby limiting the movement range of the filter element body 2-110; further, by providing a bell mouth 2-124 at one end of the limiting groove 2-123, not only can the guiding function of the bell mouth 2-124 be utilized to guide the limiting rib 2-111 to fit into the limiting groove 2-123, but the bell mouth 2-124 also has the advantages of a wide mouth for entry and a narrow mouth for exit, thereby facilitating the limiting rib 2-111 to fit into the limiting groove 2-123.

[0168] According to some embodiments of the present application, the water purification device 2-1000 further includes a booster pump, a waterway plate, a pump body mounting seat, and a plate body mounting seat, wherein the pump body mounting seat is used to support the booster pump, and the main body mounting seat is used to support the waterway plate. In order to simplify the assembly process of the water purification device 2-1000, the housing 2-200, the filter element mounting seat 2-120, the pump body mounting seat, and the plate body mounting seat can be manufactured through a one-step injection molding process, that is, the housing 2-200, the filter element mounting seat 2-120, the pump body mounting seat, and the plate body mounting seat are an integrally molded part, which can reduce production costs, simplify assembly steps, reduce production costs, and improve production efficiency.

[0169] Furthermore, the opening 2-122 of the pump body mounting seat is oriented in the same direction as the opening 2-122 of the plate body mounting seat, so that when installing the booster pump and the waterway plate, they can be installed in the same assembly direction, thereby eliminating the need to flip the casing 2-200, thereby simplifying the assembly process of the water purification device 2-1000 and shortening the assembly cycle.

[0170] Finally, it should be noted that the above embodiments are intended only to illustrate the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the embodiments, those skilled in the art will appreciate that various combinations, modifications, or equivalent substitutions of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application and are intended to be encompassed by the claims of the present application.

Claims

1. A filter element assembly, comprising: A filter element seat body, which has an installation cavity and an installation port communicating with the installation cavity. A lead-out groove is provided on the inner wall of the installation port. The lead-out groove extends obliquely along the circumferential direction of the installation port and communicates with the installation port; A filter element body, which is arranged in the installation cavity. One end of the filter element body is inserted and connected to a water circuit board, and the other end of the filter element body is provided with a rotary connection part; An end cap, which is correspondingly arranged at the installation port. The end cap is rotatably connected to the filter element body through the rotary connection part. A clamping protrusion corresponding to the lead-out groove is provided on the outer peripheral wall of the end cap. The clamping protrusion can slide along the lead-out groove to axially take part of the filter element body away from the installation cavity.

2. The filter element assembly according to claim 1, wherein, The clamping protrusion has an inclined end face and an abutting convex part. The abutting convex part is arranged at the end of the inclined end face close to the lead-out groove, and the abutting convex part is in abutting cooperation with the groove wall of the lead-out groove.

3. The filter element assembly according to claim 2, wherein, The lead-out groove comprises a lead-out wall, and the lead-out wall is arranged in a streamline shape along the circumferential direction of the installation port. The lead-out wall comprises a first lead-out section and a second lead-out section, and the radian of the first lead-out section is greater than that of the second lead-out section.

4. The filter element assembly according to claim 3, wherein, The central angle corresponding to the arc length of the first lead-out section extending along the circumferential direction of the installation port is α, where α is greater than or equal to 10°.

5. The filter element assembly according to claim 3 or 4, wherein, The inclination of the inclined end face is greater than the inclination of the lead-out wall.

6. The filter element assembly according to any one of claims 1-5, wherein, A holding part is formed by bulging on the side of the end cap facing away from the filter element body.

7. The filter element assembly according to claim 6, wherein, An undercut is formed by protruding the outer peripheral edge of the end of the holding part away from the filter element body.

8. The filter element assembly according to claim 6 or 7, wherein The bulging distance H of the holding part along the axial direction of the end cap is greater than or equal to 12 mm.

9. The filter element assembly according to any one of claims 1-8, wherein, A flanging part is provided on the outer peripheral edge of the end cap facing the filter element body. The flanging part covers one end of the filter element body provided with the rotary connection part, and the clamping protrusion is arranged on the outer wall surface of the flanging part.

10. A water purification device, comprising the filter element assembly according to any one of claims 1 to 9.

11. A filter element assembly, comprising: A filter element seat body, which has an installation cavity and an installation port communicating with the installation cavity. A guiding groove is provided on the inner wall of the installation port; A filter element body, which is arranged in the installation cavity. One end of the filter element body is inserted and connected to a water circuit board, and the other end of the filter element body is provided with a rotary connection part; An end cap, which is correspondingly arranged at the installation port. The end cap is rotatably connected to the filter element body through the rotary connection part. A clamping protrusion corresponding to the guiding groove is provided on the outer peripheral wall of the end cap. The clamping protrusion can slide along the guiding groove to lock or unlock the position of the filter element body in the installation cavity; Wherein, the inclination of the groove opening end of the guiding groove is different from the inclination angle of the leading-in end of the clamping protrusion.

12. The filter element assembly according to claim 11, wherein, The guiding groove includes a first guiding surface provided at the inlet end, the first guiding surface is inclined along the circumferential direction of the mounting opening, the clamping protrusion includes a second guiding surface provided at the leading-in end, the second guiding surface is inclined along the circumferential direction of the end cover, and the included angle α1 between the first guiding surface and the axial direction is different from the included angle β1 between the second guiding surface and the cross-section.

13. The filter element assembly according to claim 12, wherein, The guiding groove further includes a first abutting surface, the first abutting surface is connected to one end of the first guiding surface away from the groove opening, the clamping protrusion includes a second abutting surface, the second abutting surface is connected to one side of the second guiding surface away from the leading-in end, the second abutting surface extends along the circumferential direction of the end cover, and the first abutting surface and the second abutting surface are arranged to abut against each other.

14. The filter element assembly according to claim 12 or 13, wherein, The included angle α1 between the first guiding surface and the axial direction is greater than or equal to 30°.

15. The filter element assembly according to any one of claims 12-14, wherein, The included angle β1 between the second guiding surface and the cross-section perpendicular to the axial direction of the end cover is greater than or equal to 30°.

16. The filter element assembly according to any one of claims 12-15, wherein, The bottom wall of the guiding groove is inclined, and the included angle between the bottom wall and the cross-section perpendicular to the axial direction of the filter element seat body is γ1, where γ1 is greater than or equal to β1.

17. The filter element assembly according to any one of claims 11-16, wherein, A holding portion is formed by the end cover bulging toward the side away from the filter element body.

18. The filter element assembly according to claim 17, wherein, The bulging distance H1 of the holding portion along the axial direction of the end cover is greater than or equal to 12 mm.

19. The filter element assembly according to any one of claims 11-18, wherein, A flanging portion is provided on the outer peripheral edge of the end cover toward the filter element body, the flanging portion covers one end of the filter element body provided with the rotating connection portion, and the clamping protrusion is provided on the outer wall surface of the flanging portion.

20. A water purification device, including a housing and a filter element assembly as described in any one of claims 11-19.

21. A filter element assembly, including: A filter element body, with limiting ribs provided on the outer peripheral wall of the filter element body; A filter element mounting seat, having an installation cavity inside, one side of the installation cavity has an opening, the filter element body is adapted to be installed into the installation cavity through the opening, limiting grooves are provided on the inner wall of the installation cavity, the limiting ribs are adapted to slide along the limiting grooves, and the cooperation between the limiting ribs and the limiting grooves is used to limit the rotation of the filter element body in its circumferential direction. A flared opening is provided at one end of the limiting groove, and the flared opening is communicated with the opening.

22. The filter element assembly according to claim 21, wherein, There are multiple limiting ribs, and the multiple limiting ribs are spaced apart along the circumferential direction of the filter element body.

23. The filter element assembly according to claim 21 or 22, wherein, The width of the limiting rib is 2 mm - 5 mm.

24. The filter element assembly according to any one of claims 21-23, wherein, The limiting rib is linear.

25. The filter element assembly according to any one of claims 21-24, wherein, The end of the limiting rib has a guiding inclined surface.

26. The filter element assembly according to any one of claims 21-25, wherein, The filter element body includes: A body portion, the limiting ribs are provided on the outer peripheral wall of the body portion, the body portion is provided in the installation cavity, and the body portion is slidable along the length direction of the limiting groove; A cover body, the cover body covers the end of the body portion, a part of the structure of the cover body is located in the opening, and the cover body is rotatable relative to the body portion.

27. The filter element assembly according to claim 26, wherein, In the length direction of the limiting rib, the width of the cover body is smaller than the length of the limiting rib.

28. The filter element assembly according to claim 26 or 27, wherein, The cover body is provided with rotating ridges, and the inner peripheral wall of the installation cavity is provided with rotating grooves. The rotating grooves extend along the circumferential direction of the main body part, and the limiting grooves extend along the length direction of the main body part. With the cooperation of the rotating ridges and the rotating grooves, and the cooperation of the limiting grooves and the limiting ribs, while the cover body rotates relative to the main body part, the cover body and the main body part move along the direction of the limiting grooves.

29. The filter element assembly according to claim 28, wherein, The opening of the rotating groove communicates with the flared opening.

30. A water purification device, comprising: A filter element assembly, which is the filter element assembly according to any one of claims 21-29; A housing, the filter element assembly is arranged in the housing. The housing and the filter element mounting seat of the filter element assembly are integrally formed, and the opening of the filter element assembly is arranged on the housing.

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