Filter cartridge assembly and water purification device

Abstract

A filter cartridge assembly (100) and a water purification device (10). The filter cartridge assembly (100) comprises a filter cartridge seat (110), a waterway plate (120), a filter cartridge body (130) and an end cap (140), wherein the waterway plate (120) is provided with a plurality of first connection ports (121), which are arranged by facing a mounting cavity (111); the filter cartridge body (130) is arranged in the mounting cavity (111), and the filter cartridge body (130) is provided with a first end and a second end, which are arranged opposite each other, the first end being provided with a plurality of second connection ports (131a), which are in inserted connection with the plurality of first connection ports (121), and the second end being provided with a rotational connection portion (132a); the end cap (140) is detachably connected to a mounting opening (112) in the filter cartridge seat (110), and the end cap (140) is rotationally connected to the rotational connection portion (132a); and the filter cartridge body (130) is inserted into the waterway plate (120) while the end cap (140) and the rotational connection portion (132a) rotate, such that the first connection ports (121) are connected to and in communication with the second connection ports (131a). The stability and the filtering effect of the filter cartridge assembly (100) are ensured, and the structure of the waterway plate (120) is also simplified, such that the overall size of the filter cartridge assembly (100) is reduced, the connection between the filter cartridge body (130) and the waterway plate (120) is facilitated, and the manufacturing cost is reduced.

Description

Filter element assembly and water purification device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent applications No. 2023118418779, filed on December 28, 2023, entitled “Filter cartridge assembly and water purification device”, No. 2023236225229, filed on December 28, 2023, entitled “Filter cartridge assembly and water purification device”, and No. 2023236214188, 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] Filter elements are the core of water purification products, including activated carbon filter elements, PP filter elements, ceramic filter elements, resin filter elements, titanium rod filter elements, nanofiltration membranes, hollow fiber ultrafiltration membranes, and RO reverse osmosis membranes. Generally, filter elements have a specific service life and must be replaced before reaching the end of their lifespan.

[0006] However, during installation of some existing filter elements, the core body is rotated as a whole to fix it. Therefore, a transfer structure needs to be provided on the waterway plate, which results in a complicated structure of the waterway plate.

[0007] In the related technical field, the commonly used rotary-cage filter replacement method requires the filter element to rotate as a whole, requiring a corresponding rotation mechanism on the waterway plate. The rotation of the filter element drives the rotation of the waterway plate's rotation mechanism. This results in a complex waterway plate structure and high costs. Furthermore, the assembly of the cover and the core is complex, making it difficult for manufacturers to produce.

[0008] Summary of the Invention

[0009] 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, while ensuring the stability and filtration effect of the filter element assembly, simplifies the structure of the waterway plate, reduces the overall volume of the filter element assembly, facilitates the connection between the filter element body and the waterway plate, and reduces manufacturing costs.

[0010] To this end, the present application also proposes a filter element assembly, which simplifies the assembly structure between the filter element body and the end cover body while ensuring the relative rotation of the filter element body and the end cover body, improves the assembly efficiency, and simplifies the installation process of the filter element body.

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

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

[0013] A filter cartridge seat body, the filter cartridge seat body being fixedly disposed in the housing of the water purification device, the filter cartridge seat body having an installation cavity and an installation port communicating with the installation cavity;

[0014] a waterway plate, the waterway plate being arranged on the other side of the installation cavity relative to the installation opening, the waterway plate having a plurality of first interfaces arranged toward the installation cavity;

[0015] A filter element body, the filter element body being disposed in the mounting cavity, the filter element body having a first end and a second end disposed opposite to each other, the first end being provided with a plurality of second interfaces that are mutually plugged with the plurality of first interfaces, and the second end being provided with a rotating connection portion;

[0016] The end cover is detachably connected to the mounting port of the filter element seat body, and the end cover is rotatably connected to the rotating connection portion. When the end cover and the rotating connection portion rotate, the filter element body is plugged into the waterway plate to connect and communicate with the first interface and the second interface.

[0017] In some embodiments, an arc-shaped limiting groove is provided on the end surface of the second end.

[0018] In some embodiments, the arc-shaped limiting groove extends circumferentially along the end surface of the second end.

[0019] In some embodiments, a positioning column corresponding to the arc-shaped limiting groove is provided on a side of the end cover facing the second end.

[0020] In some embodiments, a portion of the positioning post extends into the arc-shaped limiting groove, and the positioning post can be slidably arranged along the arc-shaped limiting groove.

[0021] In some embodiments, the positioning column has a locked position and an unlocked position when sliding in the arc-shaped limiting groove.

[0022] In some embodiments, when the positioning post is in the locked position, the end cover is engaged and fixed with the filter element seat body.

[0023] In some embodiments, when the positioning post is in the locked position, the end cover and the filter element seat body can be rotatably separated.

[0024] In some embodiments, a positioning protrusion is provided on the circumferential inner wall of the arc-shaped limiting groove, and the positioning protrusion is located at the locking position.

[0025] In some embodiments, the positioning column is provided with a positioning groove that cooperates with the positioning protrusion.

[0026] In some embodiments, the central angle corresponding to the arc length of the arc-shaped limiting groove extending along the circumferential direction of the end surface of the filter element body is α.

[0027] In some embodiments, α is less than or equal to 130° and greater than or equal to 80°.

[0028] In some embodiments, the filter element assembly further includes a connector.

[0029] In some embodiments, a connecting post is provided on the second end.

[0030] In some embodiments, the rotating connection portion is provided with a connection column protruding along the axial direction of the filter element body toward the end cover.

[0031] In some embodiments, the end cap is provided with a connection hole at a position corresponding to the connection column.

[0032] In some embodiments, the connecting member passes through the connecting hole and is connected to the connecting column to rotatably connect the end cap to the second end.

[0033] In some embodiments, a flange portion is provided on the side of the periphery of the end cover facing the filter element body.

[0034] In some embodiments, at least two snap-fitting bosses are provided on the flange portion.

[0035] In some embodiments, a clamping guide groove corresponding to the clamping boss is provided on the inner peripheral wall of the installation opening.

[0036] In some embodiments, the locking boss is screwed and locked with the locking guide groove.

[0037] In some embodiments, one of the waterway plate or the filter element body is provided with a plug-in column, and the other is provided with a plug-in interface.

[0038] In some embodiments, the first interface and the second interface correspond to the plug-in column or the plug-in interface respectively.

[0039] In some embodiments, the filter element assembly further includes a seal.

[0040] In some embodiments, the sealing member abuts between the plug-in column and the wall surface of the plug-in port that is opposite to each other.

[0041] In some embodiments, at least one sealing groove is provided on the outer periphery of the plug-in post.

[0042] In some embodiments, the sealing member is disposed corresponding to the sealing slot, and the sealing member is sleeved on the sealing slot.

[0043] In some embodiments, at least one engaging portion is provided on the inner wall of the plug port along its circumference.

[0044] In some embodiments, the sealing member is arranged corresponding to the fitting portion, and the sealing member is arranged around the fitting portion.

[0045] The present application also proposes a water purification device, which includes the filter element assembly, which includes a filter element seat body, a waterway plate, 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 waterway plate is arranged on the other side of the installation cavity relative to the installation port, and the waterway plate has a plurality of first interfaces arranged toward the installation cavity; the filter element body is arranged in the installation cavity, the filter element body has a first end and a second end arranged relatively to each other, the first end is provided with a plurality of second interfaces arranged to be mutually plugged with the plurality of first interfaces, and the second end is provided with a rotating connection part; the end cover is detachably connected to the installation port of the filter element seat body, the end cover is rotatably connected to the rotating connection part, and the end cover and the rotating connection part rotate while the filter element body is plugged into the waterway plate so that the first interface and the second interface are connected and communicated.

[0046] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0047] The present application provides a plurality of second interfaces on the first end of the filter element body that are plugged into the plurality of first interfaces, so that the filter element body only needs to move along the axis when docking with the waterway plate. Since the first interface and the second interface match, a stable connection is ensured. The end cap is rotatably connected to the rotating connection portion on the second end of the filter element body, so that the filter element body does not need to be rotated after docking with the waterway plate. The end cap can also freely rotate with the filter element seat to limit and fix the filter element body in the installation cavity. In this way, while ensuring the stability and filtering effect of the filter element assembly, it also simplifies the structure of the waterway plate and reduces manufacturing costs.

[0048] A filter element assembly according to the present application includes:

[0049] A filter element seat body, the filter element seat body having a mounting cavity and a mounting opening communicating with the mounting cavity;

[0050] a waterway plate, the waterway plate being arranged on the other side of the installation cavity relative to the installation opening, the waterway plate having a plurality of first interfaces arranged toward the installation cavity;

[0051] A filter element body, the filter element body being disposed in the mounting cavity, the filter element body having a first end and a second end disposed opposite to each other, the first end being provided with a plurality of second interfaces that are mutually plugged with the plurality of first interfaces, and the second end being provided with a rotating connection portion;

[0052] The end cover is detachably connected to the mounting port of the filter element seat body, and the end cover is rotatably connected to the rotating connection portion. When the end cover and the rotating connection portion rotate, the filter element body is plugged into the waterway plate to connect and communicate with the first interface and the second interface.

[0053] In some embodiments, an arc-shaped limiting groove is provided on the end surface of the second end.

[0054] In some embodiments, the arc-shaped limiting groove extends circumferentially along the end surface of the second end.

[0055] In some embodiments, a positioning column corresponding to the arc-shaped limiting groove is provided on a side of the end cover facing the second end.

[0056] In some embodiments, a portion of the positioning post extends into the arc-shaped limiting groove, and the positioning post can be slidably arranged along the arc-shaped limiting groove.

[0057] In some embodiments, the positioning column has a locked position and an unlocked position when sliding in the arc-shaped limiting groove.

[0058] In some embodiments, when the positioning post is in the locked position, the end cover is engaged and fixed with the filter element seat body.

[0059] In some embodiments, when the positioning post is in the locked position, the end cover and the filter element seat body can be rotatably separated.

[0060] In some embodiments, a positioning protrusion is provided on the circumferential inner wall of the arc-shaped limiting groove, and the positioning protrusion is located at the locking position.

[0061] In some embodiments, the positioning column is provided with a positioning groove that cooperates with the positioning protrusion.

[0062] In some embodiments, the central angle corresponding to the arc length of the arc-shaped limiting groove extending along the circumferential direction of the end surface of the filter element body is α1.

[0063] In some embodiments, α1 is less than or equal to 130° and greater than or equal to 80°.

[0064] In some embodiments, the filter element assembly further includes a connector.

[0065] In some embodiments, a connecting post is provided on the second end.

[0066] In some embodiments, the rotating connection portion is provided with a connection column protruding along the axial direction of the filter element body toward the end cover.

[0067] In some embodiments, the end cap is provided with a connection hole at a position corresponding to the connection column.

[0068] In some embodiments, the connecting member passes through the connecting hole and is connected to the connecting column to rotatably connect the end cap to the second end.

[0069] In some embodiments, a flange portion is provided on the side of the periphery of the end cover facing the filter element body.

[0070] In some embodiments, at least two snap-fitting bosses are provided on the flange portion.

[0071] In some embodiments, a clamping guide groove corresponding to the clamping boss is provided on the inner peripheral wall of the installation opening.

[0072] In some embodiments, the locking boss is screwed and locked with the locking guide groove.

[0073] In some embodiments, one of the waterway plate or the filter element body is provided with a plug-in column, and the other is provided with a plug-in interface.

[0074] In some embodiments, the first interface and the second interface correspond to the plug-in column or the plug-in interface respectively.

[0075] In some embodiments, the filter element assembly further includes a seal.

[0076] In some embodiments, the sealing member abuts between the plug-in column and the wall surface of the plug-in port that is opposite to each other.

[0077] In some embodiments, at least one sealing groove is provided on the outer periphery of the plug-in post.

[0078] In some embodiments, the sealing member is disposed corresponding to the sealing slot, and the sealing member is sleeved on the sealing slot.

[0079] In some embodiments, at least one engaging portion is provided on the inner wall of the plug port along its circumference.

[0080] In some embodiments, the sealing member is arranged corresponding to the fitting portion, and the sealing member is arranged around the fitting portion.

[0081] The present application also proposes a water purification device, which includes the filter element assembly, which includes a filter element seat body, a waterway plate, 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 waterway plate is arranged on the other side of the installation cavity relative to the installation port, and the waterway plate has a plurality of first interfaces arranged toward the installation cavity; the filter element body is arranged in the installation cavity, the filter element body has a first end and a second end arranged relatively to each other, the first end is provided with a plurality of second interfaces arranged to be mutually plugged with the plurality of first interfaces, and the second end is provided with a rotating connection part; the end cover is detachably connected to the installation port of the filter element seat body, the end cover is rotatably connected to the rotating connection part, and the end cover and the rotating connection part rotate while the filter element body is plugged into the waterway plate so that the first interface and the second interface are connected and communicated.

[0082] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0083] The present application provides a plurality of second interfaces on the first end of the filter element body that are plugged into the plurality of first interfaces, so that the filter element body only needs to move along the axis when docking with the waterway plate. Since the first interface and the second interface match, a stable connection is ensured. The end cap is rotatably connected to the rotating connection portion on the second end of the filter element body, so that the filter element body does not need to be rotated after docking with the waterway plate. The end cap can also freely rotate with the filter element seat to limit and fix the filter element body in the installation cavity. In this way, while ensuring the stability and filtering effect of the filter element assembly, it also simplifies the structure of the waterway plate and reduces manufacturing costs.

[0084] A filter element assembly according to the present application includes:

[0085] A filter element body, one end of which is provided with a plug-in post for plugging into the waterway plate, and the other end of which is provided with a rotating connection portion with a protruding end surface;

[0086] An end cap body, the end cap body having a first mounting surface and a second mounting surface arranged opposite to each other, the first mounting surface mask being provided on one end of the filter element body provided with the rotating connection portion, the end cap body being provided with a mounting hole corresponding to the rotating connection portion, the mounting hole penetrating the first mounting surface and the second mounting surface, and a portion of the rotating connection portion extending from the mounting hole to the second mounting surface;

[0087] A connecting piece, one end of which is fixedly connected to the rotating connecting portion, and the other end of which is limitedly matched with the second mounting surface, connecting the end cover body to the filter element body in the axial direction of the end cover body.

[0088] In some embodiments, the rotational connection portion includes a connecting post.

[0089] In some embodiments, a shoulder stop is provided at one end of the connecting post away from the filter element body.

[0090] In some embodiments, a plug-in sleeve is protruding from a side of the first mounting surface facing the filter element body.

[0091] In some embodiments, the plug-in sleeve is arranged corresponding to the outer periphery of the mounting hole.

[0092] In some embodiments, the plug-in sleeve is sleeved on the connecting column, and the shoulder limiting portion is penetrated through the mounting hole.

[0093] In some embodiments, the connecting member includes a connecting portion and a limiting portion.

[0094] In some embodiments, the limiting portion protrudes axially and is connected to one end of the connecting portion.

[0095] In some embodiments, the connecting portion is connected to the connecting post.

[0096] In some embodiments, the limiting portion and the shoulder limiting portion form an annular limiting groove.

[0097] In some embodiments, the mounting hole is snap-fitted into the annular limiting groove.

[0098] In some embodiments, the connecting column is provided with a threaded hole axially penetrating the shoulder limiting portion.

[0099] In some embodiments, the connector is a threaded fastener.

[0100] In some embodiments, the threaded fastener is threadedly connected to the connecting column through the threaded hole.

[0101] In some embodiments, a plurality of ribs are provided on the first mounting surface.

[0102] In some embodiments, a plurality of the ribs are arranged in a circumferential annular array along the first mounting surface.

[0103] In some embodiments, the filter element assembly further includes a decorative piece.

[0104] In some embodiments, a side of the second mounting surface facing the filter element body is recessed to form a mounting groove.

[0105] In some embodiments, the mounting hole is provided at the bottom of the mounting slot.

[0106] In some embodiments, the decorative piece covers a notch of the mounting slot.

[0107] In some embodiments, a buckle is provided on the side wall of the mounting slot.

[0108] In some embodiments, the decorative piece is provided with an undercut at a position corresponding to the buckle.

[0109] In some embodiments, the decorative piece is fixed to the notch of the mounting slot by a buckle connection between the buckle and the undercut.

[0110] In some embodiments, a positioning column facing the filter element body is provided on the first mounting surface.

[0111] In some embodiments, the filter element body is provided with an arc-shaped limiting groove along the outer peripheral side of the rotating connection portion.

[0112] In some embodiments, the positioning post can be slidably inserted into the arc-shaped limiting groove.

[0113] In some embodiments, the filter element assembly further includes a filter element seat.

[0114] In some embodiments, the filter element seat includes a mounting cavity for mounting the filter element body and a mounting opening communicating with the mounting cavity.

[0115] In some embodiments, a peripheral edge of the first mounting surface is provided with a flange portion facing the filter element body.

[0116] In some embodiments, at least two snap-fitting bosses are provided on the flange portion.

[0117] In some embodiments, a clamping guide groove corresponding to the clamping boss is provided on the inner peripheral wall of the mounting opening.

[0118] In some embodiments, the locking boss is screwed and locked with the locking guide groove.

[0119] The present application also proposes a water purification device, which includes the filter element assembly, the filter element assembly including a filter element body, an end cover body and a decorative part, one end of the filter element body is provided with a plug-in column for plugging with a waterway plate, and the other end is provided with a rotating connection part with a protruding end face; the end cover body has a first mounting surface and a second mounting surface arranged opposite to each other, the first mounting surface mask is provided on the end of the filter element body provided with the rotating connection part, the end cover body is provided with a mounting hole corresponding to the rotating connection part, the mounting hole passes through the first mounting surface and the second mounting surface, and part of the structure of the rotating connection part extends out of the second mounting surface from the mounting hole; one end of the connecting member is fixedly connected to the rotating connection part, and the other end of the connecting member is limitedly matched with the second mounting surface, and the end cover body is connected to the filter element body in the axial direction of the end cover body.

[0120] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0121] The present application is provided with a plug-in column at one end of the filter element body and a rotating connection part with a protruding end face at the other end, and the first mounting surface mask of the end cover body is provided on one end of the rotating connection part of the filter element body and cooperates with the rotating connection part through the mounting hole. In this way, the connection between the filter element body and the waterway plate can be connected by plugging and setting the plug-in column, and the axial fixation of the filter element body can be fixed by rotating the end cover body, thereby reducing the setting of a rotating mechanism on the waterway plate, making the structure complicated, and facilitating the replacement of the filter element assembly; one end of the connecting piece is fixedly connected to the rotating connection part of the filter element body, and the other end of the connecting piece is limitedly cooperated with the second mounting surface of the end cover body, which can effectively limit the axial distance between the end cover body and the filter element body, and the end cover body can be rotated relative to the filter element body. In this way, the assembly structure between the filter element body and the end cover body is simplified, the number of parts and assembly steps are reduced, and production efficiency is improved.

[0122] 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

[0123] 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.

[0124] FIG1 is a schematic structural diagram of an embodiment of a water purification device provided in an embodiment of the present application;

[0125] FIG2 is a schematic diagram of the assembly of the filter element assembly according to an embodiment of the invention;

[0126] FIG3 is a cross-sectional view of an embodiment of the water purification device in FIG1 ;

[0127] FIG4 is a cross-sectional view of another embodiment of the water purification device in FIG1 ;

[0128] FIG5 is a schematic diagram of the assembly of the filter element body and the end cap in FIG1 ;

[0129] FIG6 is a cross-sectional view of the filter element body and the end cap in FIG5 ;

[0130] FIG7 is a schematic structural diagram of the filter element body in FIG5 ;

[0131] Figure 8 is a schematic structural diagram of the end cover in Figure 5;

[0132] FIG9 is a schematic structural diagram of an embodiment of a water purification device provided in an embodiment of the present application;

[0133] FIG10 is a schematic diagram of the assembly of the filter element assembly in an embodiment of the present application;

[0134] FIG11 is a cross-sectional view of an embodiment of the water purification device in FIG9;

[0135] FIG12 is a cross-sectional view of another embodiment of the water purification device in FIG9;

[0136] FIG13 is a schematic diagram of the assembly of the filter element body and the end cap in FIG9;

[0137] FIG14 is a cross-sectional view of the filter element body and the end cap in FIG13;

[0138] FIG15 is a schematic structural diagram of the filter element body in FIG13;

[0139] Figure 16 is a schematic structural diagram of the end cover in Figure 13;

[0140] FIG17 is a schematic structural diagram of an embodiment of a water purification device provided in an embodiment of the present application;

[0141] FIG18 is a cross-sectional view of the filter element assembly in FIG17;

[0142] FIG19 is an enlarged view of point A in FIG18;

[0143] Figure 20 is a schematic structural diagram of the end cover body in Figure 18;

[0144] FIG21 is a cross-sectional view of the end cover body in FIG20;

[0145] FIG22 is a schematic structural diagram of the filter element body in FIG18;

[0146] FIG23 is a cross-sectional view of the filter element body in FIG22; and

[0147] FIG24 is a top view of the filter element body in FIG22.

[0148] FIGURES 10. Water purification device; 100. Filter element assembly; 110. Filter element seat; 111. Mounting cavity; 112. Mounting port; 113. Clamping guide groove; 120. Waterway plate; 121. First interface; 122. Insertion port; 122a. Fitting portion; 130. Filter element body; 131. First end; 131a. Second interface; 131b. Insertion post; 131c. Sealing slot; 132. Second end; 132a. Rotating connection portion; 132b. Arc-shaped limiting groove; 132c. Positioning protrusion; 132d. Connecting post; 140. End cap; 141. Positioning post; 141a. Positioning groove; 142. Connecting hole; 143. Flanged portion; 143a. Clamping boss; 150. Connecting member; 160. Sealing member; 200. Housing; 1-10, water purification device; 1-100, filter element assembly; 1-110, filter element seat; 1-111, mounting cavity; 1-112, mounting port; 1-113, snap-fit ​​guide groove; 1-120, waterway plate; 1-121, first interface; 1-122, plug interface; 1-122a, fitting portion; 1-130, filter element body; 1-131, first end; 1-131a, second interface; 1-131b, plug-in post; 1-131c, sealing slot; 1-132, second end; 1-132a, rotating connection portion; 1-132b, arc-shaped limit groove; 1-132c, positioning protrusion; 1-132d, connecting post; 1-140, end cap; 1-141, positioning post; 1-141a, positioning groove; 1-142, connecting hole; 1-143, flange portion; 1-143a, snap-fit ​​boss; 1-150, connector; 1-160, seal; 1-200, housing; 2-10, water purification device; 2-100, filter element assembly; 2-110, filter element body; 2-111, plug-in post; 2-112, rotating connection portion; 2-112a, connecting post; 2-112b, shoulder stop portion; 2-112c, annular stop groove; 2-113, arcuate stop groove; 2-120, end cover body; 2-121, first mounting surface; 2-121a, plug-in tube; 2-121b, rib; 2-121c, positioning column; 2-122, second mounting surface; 2-122a, mounting groove; 2-122b, snap; 2-123, mounting hole; 2-124, flange portion; 2-124a, snap-fit ​​boss; 2-130, connector; 2-131a, connector portion; 2-131b, limiting portion; 2-140, decorative component; 2-141, undercut; 2-200, housing. DETAILED DESCRIPTION

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] Filter elements are the core of water purification products, including activated carbon filter elements, PP filter elements, ceramic filter elements, resin filter elements, titanium rod filter elements, nanofiltration membranes, hollow fiber ultrafiltration membranes, and RO reverse osmosis membranes. Generally, filter elements have a specific service life and must be replaced before reaching the end of their lifespan.

[0156] However, during installation of some existing filter elements, the core body is rotated as a whole to fix it. Therefore, a transfer structure needs to be provided on the waterway plate, which results in a complicated structure of the waterway plate.

[0157] In the related technical field, the commonly used rotary-cage filter replacement method requires the filter element to rotate as a whole, requiring a corresponding rotation mechanism on the waterway plate. The rotation of the filter element drives the rotation of the waterway plate's rotation mechanism. This results in a complex waterway plate structure and high costs. Furthermore, the assembly of the cover and the core is complex, making it difficult for manufacturers to produce.

[0158] The present application provides a filter element assembly and a water purification device.

[0159] In the embodiment of the present application, as shown in Figures 1 to 4, the filter element assembly 100 includes a filter element seat body 110, a waterway plate 120, a filter element body 130 and an end cover 140. The filter element seat body 110 is fixedly arranged in the housing 200 of the water purification device 10. The filter element seat body 110 has an installation cavity 111 and an installation port 112 connected to the installation cavity 111; the waterway plate 120 is arranged on the other side of the installation cavity 111 relative to the installation port 112, and the waterway plate 120 has a plurality of first interfaces 121 arranged toward the installation cavity 111; the filter element body 130 is arranged in the installation cavity 111, and the filter element body 130 is fixedly arranged in the housing 200 of the water purification device 10. The core body 130 has a first end 131 and a second end 132 arranged opposite to each other. The first end 131 is provided with a plurality of second interfaces 131a that are mutually plugged into the plurality of first interfaces 121, and the second end 132 is provided with a rotating connection portion 132a; the end cover 140 is detachably connected to the mounting port 112 of the filter element seat body 110, and the end cover 140 is rotatably connected to the rotating connection portion 132a. When the end cover 140 and the rotating connection portion 132a rotate, the filter element body 130 is plugged into the waterway plate 120, so that the first interface 121 and the second interface 131a are connected and communicated.

[0160] The filter cartridge seat 110 is used to securely mount the waterway plate 120 and the filter cartridge body 130. It defines a mounting cavity 111 within the housing for accommodating the filter cartridge body 130, and the size and shape of the mounting cavity 111 are designed to accommodate the filter cartridge body 130. An installation port 112 is provided at one end of the mounting cavity 111, communicating with the mounting cavity 111 and facilitating assembly and disassembly of the filter cartridge body 130 within the mounting cavity 111. The filter cartridge seat 110 can be integrally connected to the housing 200, or it can be separately molded and assembled, without specific limitation herein.

[0161] The waterway plate 120 is located on the other side of the filter element seat body 110 opposite to the installation port 112. The waterway plate 120 mainly guides the water flow, directing the tap water to the filter element body 130, and at the same time discharges the clean water and waste water filtered by the filter element body 130. The waterway plate 120 is provided with multiple first interfaces 121 on the side facing the installation cavity 111 for plugging with the second interface 131a of the filter element body 130, thereby realizing waterway communication between the waterway plate 120 and the filter element body 130.

[0162] The filter element body 130 is the core component of the filter element assembly 100, used to filter impurities from the water flow. The multiple second interfaces 131a on the first end 131 are designed to plug into the first interfaces 121 on the waterway plate 120 to achieve communication between the filter element body 130 and the waterway plate 120. The rotating connection portion 132a on the second end 132 is used to connect to the end cap 140.

[0163] It should be noted that the multiple first interfaces 121 may include a first water inlet, a first water outlet and a first wastewater outlet, and the multiple second interfaces 131a may include a second water inlet, a second water outlet and a second wastewater outlet, wherein the first water inlet and the second water inlet are plugged in together, the first water outlet and the second water outlet are plugged in together, and the first wastewater outlet and the second wastewater outlet are plugged in together, thereby connecting the filter element body 130 and the waterway plate 120 to each other.

[0164] The end cap 140 is detachably connected to the mounting opening 112 of the filter cartridge seat 110 and is rotatably connected to the rotating connection portion 132a of the filter cartridge body 130. This allows the filter cartridge body 130 to be locked within the mounting cavity 111 without rotating the filter cartridge body 130 during assembly and disassembly. This ensures the stability and filtration efficiency of the filter cartridge assembly 100 while simplifying the structure of the waterway plate 120, reducing the overall volume of the filter cartridge assembly 100, facilitating the connection between the filter cartridge body 130 and the waterway plate 120, and reducing manufacturing costs.

[0165] The present application provides a plurality of second interfaces 131a on the first end 131 of the filter element body 130 that are mutually plugged into the plurality of first interfaces 121, so that the filter element body 130 only needs to move along the axis when docking with the waterway plate 120. Since the first interfaces 121 and the second interfaces 131a match each other, a stable connection is ensured. The end cap 140 is rotatably connected to the rotating connection portion 132a on the second end 132 of the filter element body 130, so that the filter element body 130 does not need to rotate after docking with the waterway plate 120. The end cap 140 can also freely rotate with the filter element seat 110 to limit and fix the filter element body 130 within the installation cavity 111. In this way, while ensuring the stability and filtering effect of the filter element assembly 100, it also simplifies the structure of the waterway plate 120 and reduces manufacturing costs.

[0166] 6 to 8 , in some embodiments, an arcuate limiting groove 132 b is provided on the end surface of the second end 132. The arcuate limiting groove 132 b extends circumferentially along the end surface of the second end 132. A positioning post 141 corresponding to the arcuate limiting groove 132 b is provided on the side of the end cap 140 facing the second end 132. The positioning post 141 partially extends into the arcuate limiting groove 132 b, and the positioning post 141 is slidable along the arcuate limiting groove 132 b. In this embodiment, the arcuate limiting groove 132 b provided on the surface of the second end 132 cooperates with the positioning post 141 provided on the end cap 140 to limit the rotation angle of the end cap 140, thereby preventing the end cap 140 from exceeding a predetermined range during rotation, thereby improving the precise positioning and connection stability between the end cap 140 and the filter element body 130. At the same time, since the end cover 140 can rotate relative to the filter element body 130, the positioning column 141 can be slid along the arc-shaped limit groove 132b. During the installation and disassembly process, the position of the end cover 140 can be determined more accurately, thereby ensuring the correct installation and use of the filter element assembly 100.

[0167] In other embodiments, the arc-shaped limiting groove 132b can also be set on the inner wall surface of the end cover 140 corresponding to the second end 132, and the end surface of the second end 132 is provided with a positioning column 141. It can be interchangeably set according to specific needs and is not specifically limited here.

[0168] Furthermore, the positioning column 141 has a locking position and an unlocking position when sliding in the arc-shaped limiting groove 132b. When the positioning column 141 is in the locking position, the end cover 140 is engaged and fixed with the filter element seat body 110. When the positioning column 141 is in the locking position, the end cover 140 and the filter element seat body 110 can be rotated out of contact. It can be understood that in this embodiment, the end cover 140 and the filter cartridge seat body 110 are connected and fixed by means of a screw-on snap connection, and the positioning post 141 and the arc-shaped limit groove 132b have a locked position and an unlocked position, that is, when the end cover 140 and the filter cartridge seat body 110 are screwed and fixed, the positioning post 141 is located in the locked position of the arc-shaped limit groove 132b, and when the end cover 140 and the filter cartridge seat body 110 are rotated and disengaged, the positioning post 141 is located in the unlocked position of the arc-shaped limit groove 132b. In this way, the user can easily control the fixing and release of the end cover 140, and conveniently perform the disassembly, assembly and replacement operations of the filter cartridge body 130, so as to improve the convenience of use of the product and the user experience.

[0169] Referring to Figures 7 and 8 , specifically, a positioning protrusion 132c is provided on the circumferential inner wall of the arcuate limiting groove 132b, and the positioning protrusion 132c is located in the locked position. The positioning post 141 is provided with a positioning groove 141a that cooperates with the positioning protrusion 132c. By providing the positioning protrusion 132c and the positioning groove 141a on the arcuate limiting groove 132b and the positioning post 141, the present application achieves precise locking and unlocking functions. In the locked position, the positioning protrusion 132c and the positioning groove 141a cooperate with each other to ensure a secure connection between the end cap 140 and the filter element seat body 110. In the unlocked position, the positioning protrusion 132c and the positioning groove 141a separate from each other, allowing the end cap 140 to be easily rotated and removed. In this way, the positioning column 141 can stay stably in the locked position, ensuring a reliable connection between the end cover 140 and the filter element seat body 110, avoiding unnecessary loosening or detachment, and ensuring a firm and reliable connection between the end cover 140 and the filter element seat body 110.

[0170] Referring to Figure 7, in some embodiments, the central angle α corresponding to the arc length of the arc-shaped retaining groove 132b extending along the circumference of the end surface of the filter cartridge body 130 is less than or equal to 130° and greater than or equal to 80°. It will be appreciated that by setting the central angle α corresponding to the arc length of the arc-shaped retaining groove 132b extending along the circumference of the end surface of the filter cartridge body 130, this embodiment ensures that the positioning post 141 can slide within a specific angular range. By limiting the sliding range, the position of the positioning post 141 can be more precisely controlled, limiting its movement to the preset locked and unlocked positions, thereby avoiding unnecessary problems caused by sliding out of range. Selecting a larger central angle α can increase the length of the arc-shaped retaining groove 132b, thereby improving the stability and reliability of the positioning post 141. A larger central angle provides more contact area, providing better support for the positioning post 141 in the locked position and preventing accidental loosening or detachment.

[0171] Optionally, the central angle α of the arc-shaped limiting groove 132b can be 80°, 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, 105°, 106°, 107°, 108°, 110°, 111°, 112°, 113°, 114°, 115°, 116°, 117°, 118°, 119°, 200°, 2010 , 108°, 109°, 110°, 111°, 112°, 113°, 114°, 115°, 116°, 117°, 118°, 119°, 120°, 121°, 122°, 123°, 124°, 125°, 126°, 127°, 128°, 129° or 130°, etc., can be set according to actual needs and are not specifically limited here.

[0172] Referring to FIG. 7 , in one embodiment, a plurality of process holes are evenly spaced apart on the second end 132 having the same diameter as the arc-shaped limiting groove 132 b. This reduces overall deformation of the filter element body 130 during the molding process, improves the reliability of the molding process, and simultaneously improves the fit between the arc-shaped limiting groove 132 b and the positioning post 141.

[0173] 8 , in one embodiment, an inner wall or an outer wall of the end cover 140 is provided with an annular array of reinforcing ribs, and the reinforcing ribs are arranged radially to strengthen the wall of the end cover 140 and improve its service life.

[0174] 3, 4 and 6, in some embodiments, the filter element assembly 100 further includes a connector 150, wherein the rotational connection portion 132a is provided with a connecting post 132d protruding along the axial direction of the filter element body 130 toward the end cap 140, and the end cap 140 is provided with a connecting hole 142 at a position corresponding to the connecting post 132d. The connector 150 passes through the connecting hole 142 and is connected to the connecting post 132d to rotationally connect the end cap 140 to the second end 132. It is understandable that the connecting post 132d is provided protruding toward the end cap 140, the connecting hole 142 is provided at a corresponding position, and the end cap 140 is axially limited and connected to the second end 132 by the connector 150, thereby simplifying the connection setting, reducing the production cost, and ensuring the stability and reliability of the rotational connection.

[0175] Specifically, a shoulder is provided at one end of the connecting column 132d connected to the connecting hole 142, and the end cover 140 is rotatably connected with the shoulder through the connecting hole 142. The connecting piece 150 locks the end cover 140 on the connecting column 132d and limits the axis of the end cover 140 so that the end cover 140 can rotate circumferentially, thereby facilitating the rotational connection between the filter element body 130 and the end cover 140.

[0176] Referring to Figure 2, in some embodiments, a flange portion 143 is provided on the side of the end cap 140 facing the filter cartridge body 130. The flange portion 143 is provided with at least two engaging bosses 143a. The inner circumferential wall of the mounting opening 112 is provided with engaging guide grooves 113 corresponding to the engaging bosses 143a. The engaging bosses 143a screw and engage with the engaging guide grooves 113. In this embodiment, the provision of the flange portion 143 allows the end cap 140 to be securely fixed to the filter cartridge body 130. The engaging bosses 143a on the flange portion 143 correspond to the engaging guide grooves 113 on the inner circumferential wall of the mounting opening 112. When the end cap 140 is inserted into the mounting opening 112, the engaging bosses 143a screw and engage with the engaging guide grooves 113. This ensures a secure and reliable connection between the end cap 140 and the filter cartridge body 130, preventing it from loosening or falling off. At the same time, the snap-fit ​​guide groove 113 can also guide the snap-fit ​​boss 143a, so that the end cover 140 can be correctly positioned and aligned when inserted into the installation opening 112, so as to guide and guide the installation of the filter element body 130 and the cover body.

[0177] 2 to 4 , in some embodiments, one of the waterway plate 120 or the filter element body 130 is provided with a plug-in column 131 b , and the other is provided with a plug-in port 122 , and the first port 121 and the second port 131 a correspond to the plug-in column 131 b or the plug-in port 122 , respectively. 13. The first and second interfaces 131a and 131b are connected to each other via the plug post 131 and the plug interface 122.

[0178] Optionally, in order to facilitate the alignment between the plug-in column 131b and the plug-in port 122, the plug-in port 122 is set to a flared shape to guide the plug-in column 131b when it is plugged in and aligned, thereby improving installation efficiency and reliability.

[0179] Referring to Figures 3 to 6 , in some embodiments, the filter cartridge assembly 100 further includes a seal 160 , which abuts the opposing wall surfaces of the plug post 131b and the plug opening 122. It will be appreciated that the placement of the seal 160 between the plug post 131b and the plug opening 122 provides improved sealing. When the plug post 131b is inserted into the plug opening 122, the seal 160 fills the gap between the plug post 131b and the plug opening 122, preventing water or other liquids from leaking out of the connection. This ensures a leak-free connection between the waterway plate 120 and the filter cartridge body 130. Furthermore, the presence of the seal 160 protects the connection from contamination. Because the seal 160 is located between the plug post 131b and the plug opening 122, it prevents dust, dirt, and other impurities from entering the connection, preventing contamination from affecting the connection between the waterway plate 120 and the filter cartridge body 130.

[0180] Optionally, the sealing member 160 may be a sealing ring, a sealing gasket or a sealing strip, etc., and may be configured as required without any special limitation.

[0181] Referring to Figure 3, in some embodiments, at least one sealing groove 131c is provided on the outer periphery of the plug post 131b. A sealing member 160 is positioned corresponding to the sealing groove 131c and is sleeved within the sealing groove 131c. It is understood that by providing the sealing groove 131c on the outer periphery of the plug post 131b and sleeved within the sealing groove 131c, the sealing of the connection can be enhanced. The sealing groove 131c provides a space for the sealing member 160, which can be tightly sleeved within the sealing groove 131c, effectively filling the gap between the plug post 131b and the plug interface 122, thereby providing a better seal. Furthermore, because the sealing member 160 is sleeved within the sealing groove 131c, it is securely fixed to the plug post 131b. The sleeved design of the sealing member 160 ensures that the sealing member 160 will not accidentally become loose or displaced, maintaining the stability and reliability of the connection.

[0182] Referring to Figure 4, in some embodiments, at least one interlocking portion 122a is provided along the circumference of the inner wall of the plug port 122, and a seal 160 is provided corresponding to the interlocking portion 122a, and the seal 160 is arranged around the interlocking portion 122a. In this embodiment, by providing the interlocking portions 122a on the inner wall of the plug port 122 and fitting the seal 160 around these interlocking portions 122a, the sealing performance of the connection can be improved. When the plug post 131b is inserted into the plug port 122, the seal 160 can completely fit with the interlocking portion 122a, thereby reducing the presence of gaps and preventing liquid from leaking from the connection. At the same time, because the seal 160 is fitted around the interlocking portion 122a, it can be firmly fixed to the plug port 122. The sleeve design of the seal 160 ensures that the seal 160 will not accidentally loosen or shift, maintaining the stability and reliability of the connection.

[0183] The present application also proposes a water purification device 10, which includes 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.

[0184] The present application also provides a filter element assembly and a water purification device.

[0185] In the embodiment of the present application, as shown in Figures 9 to 12, the filter element assembly 1-100 includes a filter element seat body 1-110, a waterway plate 1-120, a filter element body 1-130 and an end cover 1-140, 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 waterway plate 1-120 is arranged on the other side of the installation cavity 1-111 relative to the installation port 1-112, and the waterway plate 1-120 has a plurality of first interfaces 1-121 arranged toward the installation cavity 1-111; the filter element body 1-130 is arranged in the installation cavity 1-111, and the filter element body 1-130 has a relatively arranged The first end 1-131 and the second end 1-132, the first end 1-131 is provided with a plurality of second interfaces 1-131a which are plugged into the plurality of first interfaces 1-121, and the second end 1-132 is provided with a rotating connection part 1-132a; the end cover 1-140 is detachably connected to the mounting port 1-112 of the filter element seat body 1-110, and the end cover 1-140 is rotatably connected to the rotating connection part 1-132a, and the end cover 1-140 and the rotating connection part 1-132a rotate while the filter element body 1-130 is plugged into the waterway plate 1-120, so that the first interface 1-121 and the second interface 1-131a are connected and communicated.

[0186] The filter cartridge seat 1-110 is used to complete the installation and fixation of the waterway plate 1-120 and the filter cartridge body 1-130. The interior of the filter cartridge seat defines an installation cavity 1-111 for accommodating the filter cartridge body 1-130, and the size and shape of the installation cavity 1-111 are designed to be compatible with the filter cartridge body 1-130. An installation port 1-112 is provided at one end of the installation cavity 1-111, which is connected to the installation cavity 1-111, thereby facilitating the assembly and disassembly of the filter cartridge body 1-130 disposed in the installation cavity 1-111. The filter cartridge seat 1-110 can be integrally connected to the housing 1-200, or can be separately molded and assembled for assembly, which is not specifically limited here.

[0187] The waterway plate 1-120 is located on the other side of the filter element seat body 1-110 opposite to the installation port 1-112. The waterway plate 1-120 mainly guides the water flow, directing the tap water to the filter element body 1-130, and at the same time discharges the clean water and waste water filtered by the filter element body 1-130. The waterway plate 1-120 is provided with a plurality of first interfaces 1-121 on the side facing the installation cavity 1-111 for plugging with the second interface 1-131a of the filter element body 1-130, thereby realizing waterway connection between the waterway plate 1-120 and the filter element body 1-130.

[0188] The filter element body 1-130 is the core component of the filter element assembly 1-100, used to filter impurities from the water flow. The multiple second interfaces 1-131a on the first end 1-131 are used to plug into the first interfaces 1-121 on the waterway plate 1-120 to achieve communication between the filter element body 1-130 and the waterway plate 1-120. The rotating connection portion 1-132a on the second end 1-132 is used to connect to the end cap 1-140.

[0189] It should be noted that multiple first interfaces 1-121 may include a first water inlet, a first water outlet and a first wastewater outlet, and multiple second interfaces 1-131a may include a second water inlet, a second water outlet and a second wastewater outlet, wherein the first water inlet and the second water inlet are plugged in together, the first water outlet and the second water outlet are plugged in together, and the first wastewater outlet and the second wastewater outlet are plugged in together, thereby connecting the filter element body 1-130 and the waterway plate 1-120 to each other.

[0190] The end cap 1-140 is detachably connected to the mounting opening 1-112 of the filter cartridge seat 1-110 and is rotatably connected to the rotating connection portion 1-132a of the filter cartridge body 1-130. In this way, the filter cartridge body 1-130 can be locked in the mounting cavity 1-111 without rotating the filter cartridge body 1-130 during assembly and disassembly. This ensures the stability and filtering effect of the filter cartridge assembly 1-100 while simplifying the structure of the waterway plate 1-120, reducing the overall volume of the filter cartridge assembly 1-100, facilitating the connection between the filter cartridge body 1-130 and the waterway plate 1-120, and reducing manufacturing costs.

[0191] The present application provides a plurality of second interfaces 1-131a on the first end 1-131 of the filter element body 1-130 that are plugged into the plurality of first interfaces 1-121, so that the filter element body 1-130 only needs to move along the axis when docking with the waterway plate 1-120. Since the first interfaces 1-121 and the second interfaces 1-131a match each other, a stable connection is ensured. The end cap 1-140 is rotatably connected to the rotating connection portion 1-132a on the second end 1-132 of the filter element body 1-130, so that the filter element body 1-130 does not need to rotate after docking with the waterway plate 1-120. The end cap 1-140 can also freely rotate with the filter element seat body 1-110 to limit and fix the filter element body 1-130 in the installation cavity 1-111. In this way, while ensuring the stability and filtering effect of the filter element assembly 1-100, the structure of the waterway plate 1-120 is simplified and the manufacturing cost is reduced.

[0192] 14 to 16, in some embodiments, an arc-shaped limit groove 1-132b is provided on the end face of the second end 1-132, and the arc-shaped limit groove 1-132b extends circumferentially along the end face of the second end 1-132. A positioning column 1-141 corresponding to the arc-shaped limit groove 1-132b is provided on the side of the end cover 1-140 facing the second end 1-132, and part of the positioning column 1-141 extends into the arc-shaped limit groove 1-132b, and the positioning column 1-141 can be slidably arranged along the arc-shaped limit groove 1-132b. In this embodiment, the arc-shaped limiting groove 1-132b provided on the surface of the second end 1-132 cooperates with the positioning column 1-141 provided on the end cover 1-140 to limit the rotation angle of the end cover 1-140, so as to prevent the end cover 1-140 from exceeding the predetermined range during the rotation process, thereby improving the precise positioning and connection stability between the end cover 1-140 and the filter element body 1-130. At the same time, since the end cover 1-140 can rotate relative to the filter element body 1-130, the positioning column 1-141 can be slidably arranged along the arc-shaped limiting groove 1-132b. During the installation and removal process, the position of the end cover 1-140 can be more accurately determined, thereby ensuring the correct installation and use of the filter element assembly 1-100.

[0193] In other embodiments, the arc-shaped limit groove 1-132b can also be set on the inner wall surface of the end cover 1-140 corresponding to the second end 1-132, and the positioning column 1-141 is set on the end surface of the second end 1-132. It can be interchangeably set according to specific needs and is not specifically limited here.

[0194] Furthermore, the positioning column 1-141 has a locking position and an unlocking position when sliding in the arc-shaped limit groove 1-132b. When the positioning column 1-141 is in the locking position, the end cover 1-140 is engaged and fixed with the filter cartridge seat body 1-110. When the positioning column 1-141 is in the locking position, the end cover 1-140 and the filter cartridge seat body 1-110 can be rotated out of separation. It can be understood that in this embodiment, the end cover 1-140 and the filter cartridge seat body 1-110 are connected and fixed by means of a screw-on snap connection, and the positioning column 1-141 and the arc-shaped limit groove 1-132b have a locking position and an unlocking position, that is, when the end cover 1-140 and the filter cartridge seat body 1-110 are screwed and fixed, the positioning column 1-141 is located in the locking position of the arc-shaped limit groove 1-132b, and when the end cover 1-140 and the filter cartridge seat body 1-110 are rotated and disengaged, the positioning column 1-141 is located in the unlocking position of the arc-shaped limit groove 1-132b. In this way, the user can easily control the fixing and release of the end cover 1-140, and conveniently perform the disassembly, assembly and replacement operations of the filter cartridge body 1-130, so as to improve the product's convenience and user experience.

[0195] Referring to Figures 15 and 16, specifically, a positioning protrusion 1-132c is provided on the circumferential inner wall of the arc-shaped limiting groove 1-132b, and the positioning protrusion 1-132c is located in the locked position, and a positioning groove 1-141a that cooperates with the positioning protrusion 1-132c is provided on the positioning column 1-141. The present application achieves precise locking and unlocking functions by providing the positioning protrusion 1-132c and the positioning groove 1-141a on the arc-shaped limiting groove 1-132b and the positioning column 1-141. In the locked position, the positioning protrusion 1-132c and the positioning groove 1-141a cooperate with each other to ensure a firm connection between the end cover 1-140 and the filter element seat body 1-110. In the unlocked position, the positioning protrusion 1-132c and the positioning groove 1-141a are separated from each other, allowing the end cover 1-140 to be easily rotated and removed. In this way, the positioning column 1-141 can stay stably in the locked position, ensuring a reliable connection between the end cover 1-140 and the filter cartridge seat body 1-110, avoiding unnecessary loosening or detachment, and ensuring a firm and reliable connection between the end cover 1-140 and the filter cartridge seat body 1-110.

[0196] Referring to Figure 15, in some embodiments, the central angle corresponding to the arc length of the arc-shaped limiting groove 1-132b extending along the circumferential direction of the end face of the filter element body 1-130 is α1, where α1 is less than or equal to 130° and greater than or equal to 80°. It can be understood that this embodiment ensures that the positioning column 1-141 slides within a specific angle range by setting the central angle α1 corresponding to the arc length of the arc-shaped limiting groove 1-132b extending along the circumferential direction of the end face of the filter element body 1-130. After limiting the sliding range, the position of the positioning column 1-141 can be more accurately controlled so that it can only move between the preset locking position and unlocking position, avoiding unnecessary problems caused by sliding out of range. By appropriately selecting a larger central angle α1 value, the length of the arc-shaped limiting groove 1-132b can be increased, thereby improving the stability and reliability of the positioning column 1-141. A larger central angle can provide more contact area, so that the positioning column 1-141 has better support force when in the locked position, preventing accidental loosening or disengagement.

[0197] Optionally, the central angle α1 of the arc-shaped limiting groove 1-132b can be 80°, 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, 105°, 106°, 107°, 108°, 109°, 110°, 111°, 112°, 113°, 114°, 115°, 116°, 117°, 118°, 119°, 200°, 2010 7°, 108°, 109°, 110°, 111°, 112°, 113°, 114°, 115°, 116°, 117°, 118°, 119°, 120°, 121°, 122°, 123°, 124°, 125°, 126°, 127°, 128°, 129° or 130°, etc., can be set according to actual needs and are not specifically limited here.

[0198] 15 , in one embodiment, a plurality of process holes are evenly spaced apart on the second end 1-132 having the same diameter as the arc-shaped limiting groove 1-132b. This reduces overall deformation of the filter element body 1-130 during the molding process, improves the reliability of the molding process, and improves the fit between the arc-shaped limiting groove 1-132b and the positioning post 1-141.

[0199] Referring to Figure 16, in one embodiment, the inner wall or outer wall of the end cover 1-140 is provided with a ring array of reinforcing ribs, and the reinforcing ribs are arranged radially to strengthen the wall surface of the end cover 1-140 and improve its service life.

[0200] 11, 12, and 14, in some embodiments, the filter element assembly 1-100 further includes a connector 1-150. The rotational connection portion 1-132a is provided with a connecting post 1-132d protruding along the axial direction of the filter element body 1-130 toward the end cap 1-140. The end cap 1-140 is provided with a connecting hole 1-142 at a position corresponding to the connecting post 1-132d. The connector 1-150 passes through the connecting hole 1-142 and connects to the connecting post 1-132d to rotationally connect the end cap 1-140 to the second end 1-132. It is understood that the connecting post 1-132d protrudes toward the end cap 1-140, the connecting hole 1-142 is provided at a corresponding position, and the end cap 1-140 is axially limited and connected to the second end 1-132 by the connector 1-150, which simplifies the connection setting, reduces production costs, and ensures the stability and reliability of the rotational connection.

[0201] Specifically, a shoulder is provided at one end of the connecting column 1-132d connected to the connecting hole 1-142, and the end cover 1-140 is rotatably connected with the shoulder through the connecting hole 1-142. The connecting member 1-150 locks the end cover 1-140 on the connecting column 1-132d and limits the axis of the end cover 1-140 so that the end cover 1-140 can rotate circumferentially, thereby facilitating the rotational connection between the filter element body 1-130 and the end cover 1-140.

[0202] 10 , in some embodiments, a flange portion 1-143 is provided on the peripheral edge of the end cap 1-140 facing the side of the filter element body 1-130. The flange portion 1-143 is provided with at least two engaging bosses 1-143a. The inner peripheral wall of the mounting opening 1-112 is provided with engaging guide grooves 1-113 corresponding to the engaging bosses 1-143a. The engaging bosses 1-143a are screwed and engaged with the engaging guide grooves 1-113. In this embodiment, the end cap 1-140 can be firmly fixed to the filter element body 1-130 by providing the flange portion 1-143. The engaging bosses 1-143a on the flange portion 1-143 correspond to the engaging guide grooves 1-113 on the inner peripheral wall of the mounting opening 1-112. When the end cap 1-140 is inserted into the mounting opening 1-112, the engaging bosses 1-143a are screwed and engaged with the engaging guide grooves 1-113. This ensures that the connection between the end cap 1-140 and the filter element body 1-130 is firm and reliable, and is not easy to loosen or fall off. At the same time, the snap guide groove 1-113 can also guide the snap boss 1-143a, so that the end cap 1-140 can be correctly positioned and aligned when inserted into the installation opening 1-112, so as to guide and guide the installation of the filter element body 1-130 and the cover body.

[0203] 10 to 12, in some embodiments, one of the waterway plate 1-120 or the filter element body 1-130 is provided with a plug-in column 1-131b, and the other is provided with a plug-in interface 1-122, and the first interface 1-121 and the second interface 1-131a correspond to the plug-in column 1-131b or the plug-in interface 1-122 respectively. It can be understood that the plug-in column 1-131b can be provided on the first end 1-131 of the filter element body 1-130 or can also be provided on the waterway plate 1-120, that is, when the plug-in column 1-131b is provided on the first end 1-131 of the filter element body 1-130, the plug-in interface 1-122 is provided on the waterway plate 1-120; and when the plug-in column 1-131b is provided on the waterway plate 1-120, the plug-in interface 1-122 is provided on the first end 1-131 of the filter element body 1-130. In this embodiment, the plug-in column 1-131 b is set at the first end 1-131 of the filter element body 1-130, and the plug interface 1-122 is set on the waterway plate 1-120 as an example, wherein the plug interface 1-122 can be a tubular setting, extending from the waterway plate 1-120 toward the installation cavity 1-111, and the diameter of the tubular plug interface 1-122 is larger than the outer diameter of the plug column 1-131b, so that the two can be plugged in and matched. Specifically, the first interface 1-121 is connected to the second interface 1-131a through the plug column 1-131b and the plug interface 1-122.

[0204] Optionally, in order to facilitate the alignment between the plug-in column 1-131b and the plug-in interface 1-122, the plug-in interface 1-122 is set to a flared shape to guide the plug-in column 1-131b when it is plugged in and aligned, thereby improving installation efficiency and reliability.

[0205] 11 to 14 , in some embodiments, the filter element assembly 1-100 further includes a seal 1-160, which abuts against the wall surfaces of the plug-in column 1-131b and the plug-in interface 1-122 that are relatively arranged. It can be understood that by providing the seal 1-160 between the plug-in column 1-131b and the plug-in interface 1-122, better sealing can be provided. When the plug-in column 1-131b is inserted into the plug-in interface 1-122, the seal 1-160 can fill the gap between the plug-in column 1-131b and the plug-in interface 1-122, thereby preventing water or other liquids from leaking out of the connection. This ensures that the connection between the waterway plate 1-120 and the filter element body 1-130 does not produce any leakage. At the same time, the presence of the seal 1-160 can also protect the connection from contamination. Since the seals 1-160 are located between the plug posts 1-131b and the plug interfaces 1-122, they can prevent dust, dirt and other impurities from entering the connection to avoid contamination that affects the connection performance between the waterway plate 1-120 and the filter element body 1-130.

[0206] Optionally, the sealing member 1-160 may be a sealing ring, a sealing gasket or a sealing strip, etc., and may be configured as required without any special limitation.

[0207] Referring to Figure 11, in some embodiments, at least one sealing groove 1-131c is provided on the outer periphery of the plug post 1-131b, and the sealing member 1-160 is provided corresponding to the sealing groove 1-131c, and the sealing member 1-160 is sleeved in the sealing groove 1-131c. It can be understood that by providing the sealing groove 1-131c on the outer periphery of the plug post 1-131b and sleeved in the sealing groove 1-131c, the sealing of the connection can be enhanced. The sealing groove 1-131c provides a space for accommodating the sealing member 1-160, and the sealing member 1-160 can be tightly sleeved inside the sealing groove 1-131c, effectively filling the gap between the plug post 1-131b and the plug interface 1-122, thereby providing a better sealing effect. At the same time, because the sealing member 1-160 is sleeved in the sealing groove 1-131c, it can be firmly fixed to the plug post 1-131b. The sleeve design of the seal 1-160 ensures that the seal 1-160 will not accidentally become loose or shift, thereby maintaining the stability and reliability of the connection.

[0208] 12 , in some embodiments, at least one interlocking portion 1-122a is provided on the inner wall of the plug port 1-122 along its circumference, and the sealing member 1-160 is provided corresponding to the interlocking portion 1-122a, and the sealing member 1-160 is provided around the interlocking portion 1-122a. In this embodiment, by providing the interlocking portion 1-122a on the inner wall of the plug port 1-122 and sleeved around the sealing member 1-160 on these interlocking portions 1-122a, the sealing of the connection can be improved. When the plug post 1-131b is inserted into the plug port 1-122, the sealing member 1-160 can be completely fitted with the interlocking portion 1-122a, thereby reducing the presence of gaps and preventing liquid from leaking out of the connection. At the same time, since the sealing member 1-160 is sleeved around the interlocking portion 1-122a, they can be firmly fixed on the plug port 1-122. The sleeve design of the seal 1-160 ensures that the seal 1-160 will not accidentally become loose or shift, thereby maintaining the stability and reliability of the connection.

[0209] The present application also proposes a water purification device 1-10, which includes a filter element assembly 1-100. The specific structure of the filter element assembly 1-100 refers to the above-mentioned embodiment. Since the 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.

[0210] The present application also provides a filter element assembly and a water purification device.

[0211] In the embodiment of the present application, as shown in Figures 17 to 19, the filter element assembly 2-100 includes a filter element body 2-110, an end cover body 2-120 and a decorative piece 2-140. One end of the filter element body 2-110 is provided with a plug-in column 2-111 for plugging with the waterway plate, and the other end is provided with a rotating connection portion 2-112 protruding from the end face; the end cover body 2-120 has a first mounting surface 2-121 and a second mounting surface 2-122 arranged opposite to each other, the first mounting surface 2-121 is covered on one end of the filter element body 2-110 provided with the rotating connection portion 2-112, and the end cover body 2-120 is provided with a first mounting surface 2-121 and a second mounting surface 2-122 arranged opposite to each other. The cover body 2-120 is provided with a mounting hole 2-123 corresponding to the rotating connection part 2-112, and the mounting hole 2-123 passes through the first mounting surface 2-121 and the second mounting surface 2-122, and part of the structure of the rotating connection part 2-112 extends out of the second mounting surface 2-122 through the mounting hole 2-123; one end of the connecting member 2-130 is fixedly connected to the rotating connection part 2-112, and the other end of the connecting member 2-130 is limitedly matched with the second mounting surface 2-122, and the end cover body 2-120 is connected to the filter element body 2-110 in the axial direction of the end cover body.

[0212] The filter element body 2-110 is the core component of the filter element assembly 2-100 and is used to filter impurities from the water flow. A plurality of plug-in posts 2-111 are provided on one end of the filter element body 2-110 for plugging into the waterway plate. The plug-in posts 2-111 are provided with corresponding interfaces for connecting the filter element body 2-110 and the waterway plate. It should be noted that the interfaces may include a water inlet, a water outlet, and a wastewater outlet to connect the various flow paths within the filter element body 2-110 with the waterway plate. The rotating connection portion 2-112 at the other end is used to connect to the end cap body 2-120 to achieve a rotational connection.

[0213] The end cap body 2-120 is rotatably connected to one end of the filter element body 2-110 to cooperate with the housing 2-200 or the support to fix the filter element body 2-110. The end cap body 2-120 has a first mounting surface 2-121 and a second mounting surface 2-122 arranged opposite to each other. The first mounting surface 2-121 covers the end of the filter element body 2-110. The end cap body 2-120 is provided with a mounting hole 2-123 that passes through the second mounting surface 2-122 and the first mounting surface 2-121, which facilitates the fixed connection of the connector 2-130.

[0214] One end of the connector 2-130 is fixedly connected to the rotating connection portion 2-112, so that the connector 2-130 can be firmly connected to the rotating connection portion 2-112 of the filter element body 2-110, ensuring the stability and reliability of the filter element assembly 2-100 during use. The other end of the connector 2-130 is limitedly engaged with the second mounting surface 2-122, so that the end cap body 2-120 is limited to the filter element body 2-110 along the axis, limiting the end cap body 2-120 and the filter element body 2-110 to relative rotational movement. In this way, during the installation of the filter element assembly 2-100, the filter element body 2-110 is quickly aligned with the waterway plate by plugging, and then the locking structure on the end cover body 2-120 is matched with the outer shell 2-200 or the mounting bracket through the relative rotation of the end cover body 2-120 to axially limit and fix the filter element body 2-110, thereby simplifying the setting of the waterway plate. At the same time, the cooperation between the connecting part 2-130 and the rotating connecting part 2-112 limits the end cover body 2-120, and also simplifies the complex structure and steps of assembly between the end cover body 2-120 and the filter element body 2-110, thereby improving assembly efficiency and reducing production costs.

[0215] The water purification device 2-10 of the present application includes a filter element assembly 2-100, which includes a filter element body 2-110, an end cover body 2-120 and a decorative part 2-140. One end of the filter element body 2-110 is provided with a plug-in column 2-111 for plugging with a waterway plate, and the other end is provided with a rotating connection part 2-112 with a protruding end face; the end cover body 2-120 has a first mounting surface 2-121 and a second mounting surface 2-122 arranged opposite to each other, the first mounting surface 2-121 is covered on one end of the filter element body 2-110 provided with the rotating connection part 2-112, and the end cover body 2-120 is provided with a first mounting surface 2-121 and a second mounting surface 2-122 arranged opposite to each other, and the first mounting surface 2-121 is covered on one end of the filter element body 2-110 provided with the rotating connection part 2-112. The cover body 2-120 is provided with a mounting hole 2-123 corresponding to the rotating connection part 2-112, and the mounting hole 2-123 passes through the first mounting surface 2-121 and the second mounting surface 2-122, and part of the structure of the rotating connection part 2-112 extends out of the second mounting surface 2-122 through the mounting hole 2-123; one end of the connecting member 2-130 is fixedly connected to the rotating connection part 2-112, and the other end of the connecting member 2-130 is limitedly matched with the second mounting surface 2-122, and the end cover body 2-120 is connected to the filter element body 2-110 in the axial direction of the end cover body 2-120. The present application is provided with a plug-in column 2-111 at one end of the filter element body 2-110, and a rotating connection part 2-112 with a protruding end face at the other end, and the first mounting surface 2-121 of the end cover body 2-120 is covered on one end of the rotating connection part 2-112 of the filter element body 2-110, and cooperates with the rotating connection part 2-112 through the mounting hole 2-123. In this way, the connection between the filter element body 2-110 and the waterway plate can be plugged in through the plug-in column 2-111, and the axial fixation of the filter element body 2-110 can be fixed by rotating the end cover body 2-120, thereby reducing the need to set a rotating mechanism on the waterway plate. The structure is complicated and the replacement of the filter element assembly 2-100 is also convenient; one end of the connecting member 2-130 is fixedly connected to the rotating connecting portion 2-112 of the filter element body 2-110, and the other end of the connecting member 2-130 is limitedly matched with the second mounting surface 2-122 of the end cover body 2-120, which can effectively limit the axial distance between the end cover body 2-120 and the filter element body 2-110, and the end cover body 2-120 can rotate relative to the filter element body 2-110, so that the assembly structure between the filter element body 2-110 and the end cover body 2-120 is simplified, the number of parts and assembly steps are reduced, and the production efficiency is improved.

[0216] 19 , in some embodiments, the rotating connection portion 2-112 includes a connecting post 2-112a, and a shoulder stopper 2-112b is provided at one end of the connecting post 2-112a away from the filter element body 2-110. A plug-in barrel 2-121a is provided on the side of the first mounting surface 2-121 facing the filter element body 2-110. The plug-in barrel 2-121a is provided corresponding to the outer periphery of the mounting hole 2-123. The plug-in barrel 2-121a is sleeved on the connecting post 2-112a, and the shoulder stopper 2-112b is provided through the mounting hole 2-123. It is understandable that the provision of the plug-in barrel 2-121a can be sleeved with the connecting post 2-112a to improve the axial stability of the end cover body 2-120 when it is installed on the rotating connection portion 2-112. The shoulder limiting portion 2-112b is used to connect with the connecting piece 2-130 from the first mounting surface 2-121 through the second mounting surface 2-122 via the mounting hole 2-123, so as to cooperate with the connecting piece 2-130 to axially limit the end cover body 2-120. Since the aperture of the mounting hole 2-123 is larger than the diameter of the shoulder limiting portion, and the length of the shoulder limiting portion 2-112b is larger than the axial length of the mounting hole 2-123, the end cover body 2-120 can be rotated relative to the filter element body 2-110, thereby simplifying the structural setting of the rotational connection between the filter element body 2-110 and the end cover body 2-120.

[0217] 19 , in some embodiments, the connector 2-130 includes a connector portion 2-131a and a limiting portion 2-131b, wherein the limiting portion 2-131b protrudes axially and is connected to one end of the connector portion 2-131a, the connector portion 2-131a is connected to the connector column 2-112a, the limiting portion 2-131b and the shoulder limiting portion 2-112b form an annular limiting groove 2-112c, and the mounting hole 2-123 is engaged with the annular limiting groove 2-112c. It can be understood that the annular limiting groove 2-112c is formed by the cooperation between the connector 2-130 and the rotating connector 2-112, and the end cap body 2-120 is engaged with the annular mounting groove 2-122a through the mounting hole 2-123, so that the axial displacement of the end cap body 2-120 relative to the filter element body 2-110 is limited, and the end cap body 2-120 can only rotate around the axial direction. Specifically, the connecting portion 2-131a is used to achieve a fixed connection with the rotating connecting portion 2-112, and the limiting portion 2-131b axially protrudes and is connected to one end of the connecting portion 2-131a, so that the limiting portion 2-131b can form an annular limiting groove 2-112c with the shaft shoulder limiting portion 2-112b. In this way, the filter element body 2-110 and the end cover body 2-120 can rotate relative to each other, while ensuring the stability and reliability of the connection.

[0218] Referring to Figure 19, in some embodiments, the connecting column 2-112a is provided with a threaded hole that axially extends through the shoulder stop portion 2-112b. The connecting member 2-130 is a threaded fastener that is threadedly connected to the connecting column 2-112a through the threaded hole. This embodiment effectively prevents the connecting member 2-130 from loosening or falling off through the threaded connection. Furthermore, the provision of the threaded hole also makes installation and removal of the connecting member 2-130 more convenient and quick.

[0219] In other embodiments, other forms of connecting parts 2-130, such as rivets, etc., may also be used, which are not specifically limited here.

[0220] Referring to Figures 20 and 21, in some embodiments, the first mounting surface 2-121 is provided with a plurality of ribs 2-121b, which are arranged in an annular array along the circumference of the first mounting surface 2-121. It will be appreciated that, by providing the ribs 2-121b at the locations where the first mounting surface 2-121 abuts the end surface of the filter element, this embodiment can increase the strength and rigidity of the first mounting surface 2-121, thereby improving the stability of the end cap body 2-120. Furthermore, the abutment between the two abutting surfaces via the ribs 2-121b can reduce the contact area and lower rotational frictional resistance.

[0221] 19 and 20 , in some embodiments, the filter element assembly 2-100 further includes a decorative piece 2-140, wherein the second mounting surface 2-122 is recessed toward one side of the filter element body 2-110 to form a mounting groove 2-122a, the mounting hole 2-123 is provided at the bottom of the mounting groove 2-122a, and the decorative piece 2-140 covers the notch provided in the mounting groove 2-122a. In this embodiment, the second mounting surface 2-122 is recessed toward one side of the filter element body 2-110 to form the mounting groove 2-122a, and the mounting hole 2-123 is provided at the bottom of the mounting groove 2-122a. This allows the mounting hole 2-123 to correspond to the position of the decorative piece 2-140. The decorative piece 2-140 covers the notch provided in the mounting groove 2-122a, thereby increasing the aesthetics and integrity of the filter element assembly 2-100.

[0222] Referring to Figure 20, in some embodiments, a latch 2-122b is provided on the side wall of the mounting groove 2-122a, and an undercut 2-141 is provided on the decorative member 2-140 at a position corresponding to the latch 2-122b. The decorative member 2-140 is secured to the notch of the mounting groove 2-122a through the interlocking connection between the latch 2-122b and the undercut 2-141. It is understood that the latch 2-122b is a structure protruding from the side walls of the mounting groove 2-122a, or it can be a buckle. The latch 2-122b is used to provide a fixed position for the decorative member 2-140. On the outer wall of the decorative member 2-140, corresponding to the latch 2-122b, an undercut 2-141 is provided. This can be a groove or a protrusion, without particular limitation. In this embodiment, the undercut 2-141 matches the latch 2-122b to achieve a snap-on fixation of the decorative member 2-140. When the decorative piece 2-140 is inserted into the mounting groove 2-122a, the undercut 2-141 and the latch 2-122b engage with each other, thereby firmly securing the decorative piece to the notch of the mounting groove 2-122a. Thus, through the coordinated design of the latch 2-122b and the undercut 2-141, the decorative piece 2-140 can be securely and firmly fixed to the mounting groove 2-122a. This ensures that the decorative piece 2-140 is not easily loosened or removed, and provides reliable connectivity and stability.

[0223] 20 and 24 , in some embodiments, a positioning post 2-121c facing the filter element body 2-110 is provided on the first mounting surface 2-121, and the filter element body 2-110 is provided with an arc-shaped limiting groove 2-113 along the outer circumference of the rotating connection portion 2-112, and the positioning post 2-121c is slidably inserted into the arc-shaped limiting groove 2-113. In this embodiment, the arc-shaped limiting groove 2-113 provided on the outer circumference of the rotating connection portion 2-112 of the filter element body 2-110 and the positioning post 2-121c141 provided on the first mounting surface 2-121 of the end cap body 2-120 are matched to limit the rotation angle of the end cap body 2-120, so as to prevent the end cap body 2-120 from exceeding a predetermined range during rotation, thereby improving the precise positioning and connection stability between the end cap body 2-120 and the filter element body 2-110. At the same time, since the end cover body 2-120 can rotate relative to the filter element body 2-110, the positioning column 2-121c can be slid along the arc-shaped limit groove 2-113. During the installation and disassembly of the filter element assembly 2-100, the position of the end cover body 2-120 can be determined more accurately, thereby ensuring the correct installation and use of the filter element assembly 2-100.

[0224] Specifically, a positioning protrusion is provided on the circumferential inner wall of the arc-shaped limiting groove 2-113, and the positioning protrusion is located at the locked position of the filter element assembly 2-100. The positioning post 2-121c is provided with a positioning groove that cooperates with the positioning protrusion. The present application achieves precise locking and unlocking functions by providing positioning protrusions and positioning grooves on the arc-shaped limiting groove 2-113 and the positioning post 2-121c. When the filter element assembly 2-100 is in the locked position, the positioning protrusion and the positioning groove engage with each other, ensuring a secure connection between the end cap body 2-120 and the filter element seat body and providing a prompt. In the unlocked position, the positioning protrusion and the positioning groove separate from each other, allowing the end cap body 2-120 to be easily rotated and removed. In this way, providing the arc-shaped limiting groove 2-113 at the locked position allows the positioning post 2-121c to remain stably in the locked position, preventing unnecessary loosening or detachment, and ensuring a secure and reliable connection between the end cap and the filter element seat body.

[0225] The central angle of the arc-shaped limit groove 2-113 is less than or equal to 130° and greater than or equal to 80°. It can be understood that by setting the central angle of the arc-shaped limit groove 2-113, it is possible to ensure that the positioning column 2-121c slides within a specific angle range. After limiting the sliding range, the position of the positioning column 2-121c can be more accurately controlled so that it can only move between the preset locking position and unlocking position, avoiding unnecessary problems caused by sliding out of range. Properly selecting a larger central angle can increase the length of the arc-shaped limit groove 2-113, thereby improving the stability and reliability of the positioning column 2-121c. A larger central angle can provide more contact area, so that the positioning column 2-121c has better support force when in the locked position, preventing accidental loosening or detachment.

[0226] Optionally, the central angle of the arc-shaped limiting groove 2-113 can be 80°, 81°, 82°, 83°, 84°, 85°, 86°, 87°, 88°, 89°, 90°, 91°, 92°, 93°, 94°, 95°, 96°, 97°, 98°, 99°, 100°, 101°, 102°, 103°, 104°, 105°, 106°, 107°, 108°, 110°, 111°, 112°, 113°, 114°, 115°, 116°, 117°, 118°, 119°, 200°, 2010 , 108°, 109°, 110°, 111°, 112°, 113°, 114°, 115°, 116°, 117°, 118°, 119°, 120°, 121°, 122°, 123°, 124°, 125°, 126°, 127°, 128°, 129° or 130°, etc., can be set according to actual needs and are not specifically limited here.

[0227] 19 to 21 , in some embodiments, the filter element assembly 2-100 further includes a filter element seat body, the filter element seat body including a mounting cavity for mounting the filter element body 2-110 and a mounting opening communicating with the mounting cavity, a first mounting surface 2-121 having a flange portion 2-124 disposed on a peripheral edge thereof facing the filter element body 2-110, the flange portion 2-124 being provided with at least two engaging bosses 2-124a, and an inner peripheral wall of the mounting opening being provided with engaging guide grooves corresponding to the engaging bosses 2-124a, the engaging bosses 2-124a being screwed and engaged with the engaging guide grooves. In this embodiment, the provision of the flange portion 2-124 allows the end cap body 2-120 to be more securely fixed to the filter element body 2-110. The engaging boss 2-124a on the flange portion 2-124 corresponds to the engaging guide groove on the inner peripheral wall of the installation opening. When the end cap body 2-120 is inserted into the installation opening, the engaging boss 2-124a is screwed and engaged with the engaging guide groove. This ensures that the end cap body 2-120 can firmly and reliably lock the filter element body 2-110 in the installation cavity and is not easy to loosen or fall off. At the same time, the engaging guide groove can also guide the engaging boss 2-124a, so that the end cap body 2-120 can be correctly positioned and aligned when inserted into the installation opening, so as to guide and guide the installation of the filter element body 2-110 and the end cap body 2-120.

[0228] The present application also proposes a water purification device 2-10, which includes a housing 2-200 and a filter element assembly 2-100. The specific structure of the filter element end cover assembly refers to the above embodiment. Since the water purification device 2-10 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.

[0229] Specifically, in some embodiments of the present application, the water purification device 2-10 includes a housing 2-200 and a plurality of filter element assemblies 2-100, and the plurality of filter element assemblies 2-100 can be used for multiple filtration of raw water or other filtration requirements. The housing 2-200 includes a middle frame, a left side plate and a right side plate, wherein the middle frame can be an integrally formed setting or a split assembly, the split molding can reduce the difficulty of the molding process, and the integral molding can reduce the assembly cost. The middle frame is a hollow structural frame setting, and the middle frame has left and right open ends to facilitate the installation and fixation of other mechanisms of the water purification device 2-10 in the internal cavity of the middle frame, and the left cover and the right side cover are respectively provided on the left end opening and the right end opening of the middle frame, and the left cover and the right side cover can be detachably connected to the corresponding openings by means of a snap 2-122b or fasteners, so as to realize the encapsulation of the openings. At least one disassembly port for disassembling and assembling the filter element is provided on the peripheral side along the axis of the opening of the middle frame. The disassembly port is connected to the inner cavity of the middle frame. The filter element base is arranged in the inner cavity of the middle frame. It should be noted that the filter element base can be integrally formed with the middle frame or can be separately arranged without special limitation. And the installation port of the filter element base is arranged correspondingly to the disassembly port. The waterway plate is fixedly connected to the inner cavity of the middle frame, and on the side opposite to the disassembly port, each flow path connector of the waterway plate can be correspondingly arranged on the middle frame adjacent to the waterway plate, thereby realizing the connection between the raw water flow path, the clean water flow path and the wastewater flow path of the water purification device 2-10 and the outside.

[0230] 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 is fixedly arranged inside the housing of the water purification device. The filter element seat body has an installation cavity and an installation port communicating with the installation cavity; A water circuit board, which is arranged on the other side of the installation cavity relative to the installation port. The water circuit board has a plurality of first interfaces arranged towards the installation cavity; A filter element body, which is arranged inside the installation cavity. The filter element body has a first end and a second end arranged oppositely. The first end is provided with a plurality of second interfaces which are inserted and connected with the plurality of first interfaces, and the second end is provided with a rotating connection part; An end cover, which is detachably connected to the installation port of the filter element seat body. The end cover is rotationally connected to the rotating connection part. While the end cover rotates with the rotating connection part, the filter element body is inserted onto the water circuit board, so that the first interface and the second interface are connected and communicated.

2. The filter element assembly according to claim 1, wherein, An arc-shaped limiting groove is arranged on the end face of the second end, and the arc-shaped limiting groove extends circumferentially along the end face of the second end. A positioning post corresponding to the arc-shaped limiting groove is arranged on the side of the end cover facing the second end. Part of the positioning posts extend into the arc-shaped limiting groove, and the positioning posts can slide along the arc-shaped limiting groove.

3. The filter element assembly according to claim 2, wherein, When the positioning post slides in the arc-shaped limiting groove, it has a locking position and an unlocking position. When the positioning post is in the locking position, the end cover is clamped and fixed with the filter element seat body. When the positioning post is in the locking position, the end cover can be rotatably separated from the filter element seat body.

4. The filter element assembly according to claim 3, wherein, Positioning protrusions are arranged on the circumferential inner wall of the arc-shaped limiting groove, and the positioning protrusions are located at the locking position. Positioning grooves are arranged on the positioning posts and are matched with the positioning protrusions.

5. The filter element assembly according to any one of claims 2 to 4, wherein, The central angle corresponding to the arc length of the arc-shaped limiting groove extending circumferentially along the end face of the filter element body is α, where α is less than or equal to 130° and greater than or equal to 80°.

6. The filter element assembly according to any one of claims 1 to 5, further comprising a connecting piece. The rotating connection part protrudes towards the end cover along the axial direction of the filter element body to form a connecting column. A connecting hole corresponding to the connecting column is arranged on the end cover. The connecting piece passes through the connecting hole and is connected with the connecting column to rotatably connect the end cover to the second end.

7. The filter element assembly according to any one of claims 1 to 6, wherein, A flanging part is arranged on the side of the periphery of the end cover facing the filter element body. At least two clamping bosses are arranged on the flanging part. Clamping guide grooves corresponding to the clamping bosses are arranged on the inner peripheral wall of the installation port. The clamping bosses are screwed and clamped with the clamping guide grooves.

8. The filter element assembly according to any one of claims 1 to 7, wherein, One of the water circuit board or the filter element body is provided with a plugging column, and the other is provided with a plugging port. The first interface and the second interface respectively correspond to the plugging column or the plugging port.

9. The filter element assembly according to claim 8, further comprising a sealing member. The sealing member abuts between the opposite wall surfaces of the plugging column and the plugging port.

10. The filter element assembly according to claim 9, wherein, At least one sealing clamping groove is arranged on the outer periphery of the plugging column. The sealing member is arranged corresponding to the sealing clamping groove, and the sealing member is sleeved on the sealing clamping groove.

11. The filter element assembly according to claim 9 or 10, wherein, At least one fitting portion is provided along the circumferential direction on the inner wall of the insertion interface, the seal is arranged corresponding to the fitting portion, and the seal is peripherally arranged on the fitting portion.

12. A water purification device, comprising the filter element assembly according to any one of claims 1 to 11.

13. 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 water circuit board, which is arranged on the other side of the installation cavity relative to the installation port, and the water circuit board has a plurality of first interfaces arranged towards the installation cavity; A filter element body, which is arranged in the installation cavity, the filter element body has a first end and a second end arranged oppositely, the first end is provided with a plurality of second interfaces which are inserted and arranged with the plurality of first interfaces, and the second end is provided with a rotation connection portion; An end cap, which is detachably connected to the installation port of the filter element seat body, the end cap is rotationally connected to the rotation connection portion, and when the end cap rotates with the rotation connection portion, the filter element body is inserted onto the water circuit board, so that the first interface and the second interface are connected and communicated.

14. The filter element assembly according to claim 13, wherein, An arc-shaped limiting groove is provided on the end face of the second end, the arc-shaped limiting groove extends along the circumferential direction of the end face of the second end, a positioning column corresponding to the arc-shaped limiting groove is arranged on one side of the end cap facing the second end, a part of the positioning column extends into the arc-shaped limiting groove, and the positioning column can slide along the arc-shaped limiting groove.

15. The filter element assembly according to claim 14, wherein, When the positioning column slides in the arc-shaped limiting groove, it has a locking position and an unlocking position. When the positioning column is in the locking position, the end cap is engaged and fixed with the filter element seat body. When the positioning column is in the locking position, the end cap can be rotatably separated from the filter element seat body.

16. The filter element assembly according to claim 15, wherein, Positioning protrusions are provided on the circumferential inner wall of the arc-shaped limiting groove, and the positioning protrusions are located at the locking position. Positioning grooves are provided on the positioning column to cooperate with the positioning protrusions.

17. The filter element assembly according to any one of claims 14 to 16, wherein, The central angle corresponding to the arc length of the arc-shaped limiting groove extending along the circumferential direction of the end face of the filter element body is α1, where α1 is less than or equal to 130° and greater than or equal to 80°.

18. The filter element assembly according to any one of claims 13 to 17 further comprises a connecting piece. The rotation connection portion protrudes towards the end cap along the axial direction of the filter element body to be provided with a connecting column. A connecting hole is provided on the end cap corresponding to the position of the connecting column. The connecting piece passes through the connecting hole and is connected to the connecting column to rotatably connect the end cap to the second end.

19. The filter element assembly according to any one of claims 13 to 18, wherein, A flanging portion is provided on one side of the periphery of the end cap facing the filter element body. At least two clamping convex platforms are provided on the flanging portion. Clamping guide grooves corresponding to the clamping convex platforms are provided on the inner peripheral wall of the installation port. The clamping convex platforms are screwed and clamped with the clamping guide grooves.

20. The filter element assembly according to any one of claims 13 to 19, wherein, One of the water circuit board or the filter element body is provided with a plugging column, and the other is provided with an insertion interface. The first interface and the second interface respectively correspond to the plugging column or the insertion interface.

21. The filter element assembly according to claim 20 further includes a seal, and the seal abuts between the opposite walls of the insertion post and the insertion port.

22. The filter element assembly according to claim 21, wherein, At least one seal groove is provided on the outer periphery of the insertion post, the seal is provided corresponding to the seal groove, and the seal is sleeved on the seal groove.

23. The filter element assembly according to claim 21 or 22, wherein, At least one fitting portion is provided on the inner wall of the insertion port along its circumferential direction, the seal is provided corresponding to the fitting portion, and the seal is disposed around the fitting portion.

24. A water purification device includes the filter element assembly according to any one of claims 13 to 23.

25. A filter element assembly includes: A filter element body, one end of the filter element body is provided with an insertion post for plugging into a water circuit board, and the other end is provided with a rotation connection portion protruding from the end face. An end cover body, the end cover body has a first mounting surface and a second mounting surface arranged opposite to each other. The first mounting surface covers one end of the filter element body where the rotation connection portion is provided. An installation hole corresponding to the rotation connection portion is provided on the end cover body, and the installation hole penetrates through the first mounting surface and the second mounting surface. A part of the structure of the rotation connection portion extends out of the second mounting surface through the installation hole. A connecting member, one end of the connecting member is fixedly connected to the rotation connection portion, and the other end of the connecting member is in limit fit with the second mounting surface, and in the axial direction of the end cover body, the end cover body is connected to the filter element body.

26. The filter element assembly according to claim 25, wherein, The rotation connection portion includes a connection column, and an axial shoulder limiting portion is provided at one end of the connection column away from the filter element body. A plugging cylinder is protrudingly provided on the side of the first mounting surface facing the filter element body, and the plugging cylinder is provided corresponding to the outer peripheral edge of the installation hole. The plugging cylinder is sleeved on the connection column, and the axial shoulder limiting portion passes through the installation hole.

27. The filter element assembly according to claim 26, wherein, The connecting member includes a connecting portion and a limiting portion. The limiting portion axially protrudes and is connected to one end of the connecting portion. The connecting portion is connected to the connection column, and the limiting portion and the axial shoulder limiting portion form an annular limiting groove, and the installation hole is clamped in the annular limiting groove.

28. The filter element assembly according to claim 27, wherein, A threaded hole axially penetrating the axial shoulder limiting portion is provided on the connection column, the connecting member is a threaded fastener, and the threaded fastener is threadedly connected to the connection column through the threaded hole.

29. The filter element assembly according to any one of claims 25 to 28, wherein, A plurality of convex ribs are provided on the first mounting surface, and the plurality of convex ribs are arranged in a circumferential annular array on the first mounting surface.

30. The filter element assembly according to any one of claims 25 to 29 further includes a decorative member. An installation groove is recessed on the side of the second mounting surface facing the filter element body, the installation hole is provided at the bottom of the installation groove, and the decorative member is covered and arranged at the notch of the installation groove.

31. The filter element assembly according to claim 30, wherein, A buckle is provided on the side wall of the installation groove, an inverted buckle is provided at the position of the decorative member corresponding to the buckle, and the decorative member is fixed to the notch of the installation groove through the buckling between the buckle and the inverted buckle.

32. The filter element assembly according to any one of claims 25 to 31, wherein, A positioning post facing the filter element body is provided on the first mounting surface, and an arc-shaped limiting groove is provided on the outer peripheral side of the filter element body along the rotation connection portion, and the positioning post is slidably inserted into the arc-shaped limiting groove.

33. The filter element assembly according to any one of claims 25 to 32 further includes a filter element seat body, the filter element seat body includes an installation cavity for installing the filter element body and an installation opening communicating with the installation cavity, a side flanging portion facing the filter element body is provided on the periphery of the first installation surface, at least two clamping bosses are provided on the flanging portion, and clamping guide grooves corresponding to the clamping bosses are provided on the inner peripheral wall of the installation opening, and the clamping bosses are screwed and clamped with the clamping guide grooves.

34. A water purification device includes the filter element assembly according to any one of claims 25 to 33.

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