A filter cartridge and a handheld shower having a filter cartridge

Abstract

The utility model discloses a filter core for installing in the handle of handheld shower, the filter core includes filter core body, the filter core body is equipped with the accommodating cavity for filling filter material, the accommodating cavity is limited by side wall and bottom wall, the filter core body has the water inlet end and water outlet end with the accommodating cavity intercommunication, and at least the water inlet end or water outlet end is designed to have detachable end portion. The utility model discloses a handheld shower with filter core. The utility model can realize the replacement of filter material in filter core, save use cost, and the discarded filter material can be used as the soil additive of cultivating plant and is more environmental protection.

Description

Technical Field

[0001] This utility model relates to a filter element and a handheld shower head with a filter element, belonging to the technical field of water outlet devices. Background Technology

[0002] In related technologies, handheld showerheads include a handle and a water outlet body connected to each other. The handle is designed to be relatively long for easy handling, and a water flow channel is formed in the handle leading to the water outlet body for water dispensing. To obtain filtered clean water, existing technologies use a filter element installed in the handle to achieve water filtration. For example, CN203648155U discloses a showerhead with a filter element, in which a tubular filter element is installed in the handle, and the tubular filter element contains functional filter media, including negative ion balls, maifan stone, tourmaline, calcium sulfite, and activated carbon. This showerhead achieves filtration due to the tubular filter element in the handle; however, its filtration effect is limited and not obvious. Moreover, the tubular filter element is an integral part, with the top cover and the sealing cap being ultrasonically welded together. This means that the entire filter element must be replaced when changing the filter element, rather than replacing the functional filter media separately, increasing the cost of use. Furthermore, the waste filter element degrades slowly, which is not environmentally friendly.

[0003] To improve filtration efficiency, patent application CN111957450A discloses a top-spray whitening water purifier showerhead with a carbon sheet filter. The handle contains an internal filter element; simultaneously, the spray head contains a perforated mounting box, which houses the sheet filter element, achieving dual filtration to enhance the effect. However, the filter element inside the handle is still a single piece, ultrasonically welded together. This means that replacing the entire filter requires replacing the entire unit, rather than replacing individual filter media, increasing operating costs. Furthermore, the waste filter element degrades slowly, which is environmentally unfriendly. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the aforementioned technologies. Therefore, one objective of this utility model is to provide a filter cartridge that allows for the replacement of the filter media, saving on usage costs, and the waste filter media can be used as a soil additive for cultivating plants, thus being more environmentally friendly.

[0005] The second objective of this invention is to provide a handheld shower head with a filter element.

[0006] To achieve the above objectives, the first embodiment of this utility model provides a filter element for installation in the handle of a handheld shower head. The filter element includes a filter element body, which has a receiving cavity for filling filter media. The receiving cavity is defined by a side wall and a bottom wall. The filter element body has an inlet end and an outlet end communicating with the receiving cavity. At least the inlet end or the outlet end is designed to have a detachable end.

[0007] According to an embodiment of this utility model, a filter cartridge has at least one of its inlet and outlet ends designed to be detachable. When the filter cartridge needs replacement, the detachable end of the filter cartridge body can be directly disassembled, the receiving cavity of the filter cartridge body opened, the used filter media placed in the receiving cavity removed and used as a soil additive for cultivating plants, and unused filter media refilled. The detachable end of the filter cartridge body is then reassembled, and the receiving cavity of the filter cartridge body is closed, achieving reuse. Therefore, the filter media in the filter cartridge can be replaced, saving usage costs, and the waste filter media can be used as a soil additive for cultivating plants, which is more environmentally friendly.

[0008] In addition, the filter element proposed according to the above embodiments of this utility model may also have the following additional technical features: Optionally, the outlet end of the filter element body is designed to have a detachable end.

[0009] Specifically, the filter element further includes an end cap, and the water outlet end of the filter element body is provided with an opening communicating with the receiving cavity. The end cap and the opening are detachably connected, and the end cap is provided with a first water passage hole along the axial direction.

[0010] Furthermore, the end cap is threadedly connected to the opening of the filter element body.

[0011] Furthermore, one side of the end cap is connected to the receiving cavity of the filter element body, and the other side of the end cap is provided with a first filter screen. The first filter screen is provided with a first filter hole, and the diameter of the first filter hole is smaller than the diameter of the first water passage hole.

[0012] Furthermore, the filter element also includes a first limiting ring, on which a first hook is provided; the end cap is provided with a first support portion along the axial direction on the side opposite to the filter element body, and the first support portion is provided with a first circumferential groove for the first hook to engage; the first filter screen is located between the first limiting ring and the end cap.

[0013] Specifically, the end face of the water inlet of the filter element body is provided with a second water passage hole, and the water inlet of the filter element body is provided with a second filter screen located at the front end of the water inlet of the second water passage hole. The second filter screen is provided with a second filter hole, and the diameter of the second filter hole is smaller than the diameter of the second water passage hole.

[0014] Furthermore, the filter element also includes a second limiting ring, which has a second hook; the end face of the water inlet end of the filter element body is provided with a second support portion along the axial direction, which has a second circumferential groove for the second hook to engage; the second filter screen is located between the second limiting ring and the end face of the water inlet end of the filter element body.

[0015] Optionally, the side wall of the water inlet end of the filter element body is provided with a water inlet hole that communicates with the receiving cavity.

[0016] To achieve the above objectives, the second embodiment of this utility model proposes a handheld shower head with a filter element, comprising a handle and a water outlet body connected to each other, wherein the handle is provided with the aforementioned filter element. Attached Figure Description

[0017] Figure 1 This is an exploded perspective view of the filter element according to an embodiment of the present invention; Figure 2 This is another exploded perspective view of the filter element according to an embodiment of the present invention; Figure 3 This is an exploded perspective view of a handheld shower head according to an embodiment of the present invention; Figure 4 This is another exploded perspective view of the handheld shower head according to an embodiment of the present invention; Figure 5 This is a cross-sectional view of a handheld shower head according to an embodiment of the present invention; Figure 6 This is another cross-sectional view of the handheld shower head according to an embodiment of the present invention; Figure 7 for Figure 6 A magnified view of a portion of the image.

[0018] Label Explanation Filter element 100; filter element body 110, receiving cavity 111, side wall 1111, bottom wall 1112, water inlet end 112, water outlet end 113, opening 114, second water passage hole 115, second support part 116, second circumferential groove 1161, water inlet hole 117; end cap 120, first water passage hole 121, first support part 122, first circumferential groove 1221; first filter screen 130, first filter hole 131; first limiting ring 140, first hook 141, first elastic sheet 142; second filter screen 150, second filter hole 151; second limiting ring 160, second hook 161, second elastic sheet 162; Handle 200; Water outlet 300; water outlet housing 310, water passage cavity 311, connecting seat 320, mounting cavity 321, limiting ring 3211, receiving groove 322, water outlet panel 330, water outlet nozzle 331, fixing part 340, fixing ring 341, sealing ring 350, mounting part 351, sealing part 352, sealing opening 3521, water outlet filter element 360, upper housing 361, upper retaining ring 3611, buckle 3612, guide block 3613, lower housing 362, lower retaining ring 3621, guide port 3622. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0021] like Figures 1 to 7 As shown, a filter element 100 according to an embodiment of the present invention is used for installation in the handle 200 of a handheld shower head. The filter element 100 includes a filter element body 110, and the filter element body 110 is provided with a receiving cavity 111 for filling filter media, such as... Figure 1 , Figure 2 and Figure 5 As shown, the receiving cavity 111 is defined by sidewalls 1111 and bottom wall 1112; the filter element body 110 has an inlet end 112 and an outlet end 113 communicating with the receiving cavity 111, and at least the inlet end 112 or the outlet end 113 is designed to have a detachable end. Specifically, one end of the inlet end 112 and the outlet end 113 is designed to have a detachable end, or both ends of the inlet end 112 and the outlet end 113 are designed to have detachable ends. The filter media filled in the receiving cavity 111 can be at least one of calcium sulfite, blue antibacterial balls, maifanite balls, wood fish stone balls, KDF, activated carbon, scale inhibitor granules, VC balls, tourmaline balls, negative ion balls, PP cotton sheets, activated carbon balls, defluorination balls, and high magnetic energy balls. After use, the filter media can be used as a soil additive for cultivating plants, making the filter media more environmentally friendly through secondary utilization. In some examples, the filter body 110 is cylindrical to facilitate assembly into the handle 200.

[0022] In some examples, such as Figure 1 and Figure 2As shown, the outlet end 113 of the filter element body 110 is designed to have a detachable end. Specifically, the filter element 100 also includes an end cap 120. The outlet end 113 of the filter element body 110 has an opening 114 communicating with the receiving cavity 111. The end cap 120 is detachably connected to the opening 114. The end cap 120 has a first water passage hole 121 along the axial direction, which communicates with the receiving cavity 111. The end cap 120 is threadedly connected to the opening 114 of the filter element body 110. In this embodiment, the side wall of the opening 114 of the filter element body 110 has an internal thread, and the end cap 120 has an external thread. The end cap 120 and the opening 114 of the filter element body 110 are connected by the internal and external threads to facilitate the removal of the end cap 120 to open the receiving cavity 111 and remove the used filter material placed in the receiving cavity 111. Of course, external threads can also be provided on the side wall of the opening 114 of the filter body 110, and internal threads can be provided on the end cap 120.

[0023] like Figure 1 and Figure 2 As shown, one side of the end cap 120 communicates with the receiving cavity 11 of the filter element body 110, and the other side of the end cap 120 is provided with a first filter screen 130. The first filter screen 130 is provided with a first filter hole 131, the diameter of the first filter hole 131 is smaller than the diameter of the first water passage hole 121, so as to filter the filter material flowing out of the filter element body 110 through the first water passage hole 121 of the end cap 120. In order to facilitate the disassembly and replacement of the first filter screen 130, the filter element 100 also includes a first limiting ring 140. The first limiting ring 140 is provided with a first hook 141. A first elastic piece 142 can be cut on the axial side wall of the first limiting ring 140. The first hook 141 is provided on the first elastic piece 142 to increase the elasticity of the first hook 141. Preferably, the first hook 141 is provided at the end of the free end of the first elastic piece 142 so that the elasticity of the first hook 141 is maximized. The hook portion of the first hook 141 faces away from the center of the first limiting ring 140 to facilitate connection with the end cap 120. The end cap 120 has a first support portion 122 axially located on the side facing away from the filter element body 110. The first support portion 122 has a first circumferential groove 1221, into which the first hook 141 engages. Specifically, the first support portion 122 is a retainer located around the end of the end cap 120. The hook portion of the first hook 141 engages in the first circumferential groove 1221, limiting the first filter screen 130. The first filter screen 130 is positioned between the first limiting ring 140 and the end cap 120.

[0024] In some examples, such as Figure 1 and Figure 2As shown, to filter impurities in the incoming water, the filter element body 110 has a second water passage hole 115 on the end face of the water inlet end 112. The filter element body 110 has a second filter screen 150 located at the front end of the water inlet of the second water passage hole 115. The second filter screen 150 has a second filter hole 151, the diameter of which is smaller than the diameter of the second water passage hole 115, to filter larger particles in the incoming water. To facilitate the disassembly and replacement of the second filter screen 150, the filter element 100 also includes a second limiting ring 160. The second limiting ring 160 has a second hook 161. A second elastic sheet 162 can be cut into the axial side wall of the second limiting ring 160. The second hook 161 is disposed on the second elastic sheet 162 to increase the elasticity of the second hook 161. Preferably, the second hook 161 is disposed at the end of the free end of the second elastic sheet 162 to maximize the elasticity of the second hook 161. The hook portion of the second hook 161 faces away from the center of the second limiting ring 160 to facilitate connection with the filter element body 110. A second support portion 116 is axially provided on the end face of the water inlet end 112 of the filter element body 110. A second circumferential groove 1161 is provided on the second support portion 116, into which the second hook 161 engages. Specifically, the second support portion 116 is a retainer located around the end of the filter element body 110. The hook portion of the second hook 161 engages in the second circumferential groove 1161 to limit the second filter screen 150. The second filter screen 150 is confined between the second limiting ring 160 and the end face of the water inlet end 112 of the filter element body 110, allowing water to enter the filter element body 110 sequentially through the second filter screen 150 and the second filter hole 151.

[0025] In some examples, such as Figure 1 and Figure 2 As shown, the side wall of the water inlet end 112 of the filter element body 110 is provided with a water inlet hole 117 that communicates with the receiving cavity 111. The water inlet hole 117 is provided on the side wall of the water inlet end 112 of the filter element body 110, so that the filter element body 110 can be fully inletted to ensure sufficient water output.

[0026] Because at least one of the inlet end 112 and outlet end 113 of the filter cartridge body 110 is designed to have a detachable end, when the filter cartridge needs to be replaced, the detachable end of the filter cartridge body 110 can be directly disassembled, the receiving cavity 111 of the filter cartridge body 110 can be opened, the used filter media placed in the receiving cavity 111 can be taken out and used as a soil additive for cultivated plants, and the unused filter media can be refilled. Then, the detachable end of the filter cartridge body is reassembled, and the receiving cavity 111 of the filter cartridge body 110 is closed, thus achieving reuse. Therefore, the filter media in the filter cartridge can be replaced, saving usage costs, and the waste filter media can be used as a soil additive for cultivated plants, which is more environmentally friendly.

[0027] like Figures 1 to 7As shown, a handheld shower head with a filter element 100 according to an embodiment of the present invention includes a handle 200 and a water outlet body 300 connected to each other. The filter element 100 is provided in the handle 200. The water outlet body 300 includes a water outlet housing 310, a connecting seat 320, a water outlet panel 330, and a fixing member 340. The water outlet housing 310 is connected to the handle 200. The connection between the water outlet housing 310 and the handle 200 can be threaded and detachable, or it can be other detachable connection structures, such as a detachable connection structure where a protrusion is inserted into a slot. The water outlet housing 310 forms a water passage cavity 311, which communicates with the handle 200. Water filtered by the filter element 100 flows into the water passage cavity 311.

[0028] like Figure 3 and Figure 4 As shown, the connecting seat 320 is connected to the water outlet housing 310. The connecting seat 320 and the water outlet housing 310 can be integrally connected by ultrasonic welding or by threaded connection. Preferably, they are integrally connected by ultrasonic welding to enhance the sealing performance between them. The connecting seat 320 is provided with an installation cavity 321 that communicates with the water passage cavity 311 of the water outlet housing 310. A limiting ring 3211 is provided on the inner wall of the side of the installation cavity 321 that is connected to the water passage cavity 311. The water outlet side end face of the connecting seat 320 is provided with a receiving groove 322 along the circumferential direction. The receiving groove 322 has an axial depth to accommodate the sealing ring 350.

[0029] like Figure 6 and Figure 7 As shown, the sealing ring 350 includes a small-diameter mounting portion 351 and a large-diameter sealing portion 352 that are axially connected to each other. Specifically, the outer diameter of the sealing portion 352 is larger than the outer diameter of the mounting portion 351. A sealing opening 3521 is provided circumferentially on the inner wall of the sealing portion 352. The opening of the sealing opening 3521 faces the center of the sealing ring 350, meaning the sealing opening 3521 is radially arranged. The sealing opening 3521 undergoes elastic deformation under water pressure to enhance its sealing performance. Preferably, the sealing opening 3521 is a V-shaped sealing opening 3521, which facilitates processing and provides better elastic deformation. The axial length of the sealing ring 350 is greater than the axial depth of the receiving groove 322 of the connecting seat 320. When the sealing ring 350 is embedded in the receiving groove 322, the sealing part 352 of the sealing ring 350 protrudes from the end of the connecting seat 320. The width of the opening of the receiving groove 322 is adapted to the outer diameter of the sealing part 352 to accommodate the sealing part 352 of the sealing ring 350. Due to the axial depth of the receiving groove 322 and the large extrusion friction between it and the sealing ring 350, the sealing ring 350 is not easy to fall off, which is especially suitable for detachable shower heads. When the sealing ring 350 is embedded in the receiving groove 322, the side of the sealing opening 3521 of the sealing part 352 opposite to the mounting part 351 has a gap with the side wall of the receiving groove 322 of the connecting seat 320, so that water flows into the sealing opening 3521 and causes the sealing part 352 to deform under water pressure, thereby enhancing its sealing performance.

[0030] The fastener 340 and the connecting seat 320 are detachably connected. The fastener 340 and the connecting seat 320 can be detachably connected by a thread or by other detachable connection structures, such as a detachable connection structure in which a protrusion is inserted into a slot. The fastener 340 is set as a ring, and a fixing ring 341 is provided at the water outlet end of the inner side wall of the fastener 340.

[0031] When the fixing member 340 is assembled with the connecting seat 320, the water outlet panel 330 is limited and abuts against the fixing ring 341. The water outlet panel 330 is provided with a water outlet hole 331. Specifically, the water inlet side of the water outlet panel 330 abuts against the end of the sealing part 352 of the sealing ring 350, and the water outlet side of the water outlet panel 330 abuts against the fixing ring 341. When water flows through the water outlet panel 330, the water flows into the sealing opening 3521, causing the sealing part 352 to deform under the action of water pressure, so that the sealing part 352 only abuts against the water outlet panel 330, thereby enhancing its sealing performance.

[0032] like Figure 3 and Figure 4 As shown, the water outlet body 300 also includes an outlet filter element 360. The inlet end of the outlet filter element 360 abuts against the limiting ring 3211 of the connecting seat 320, and the outlet end of the outlet filter element 360 abuts against the inlet side of the outlet panel 330. The outlet filter element 360 is filled with outlet filter media, which is activated carbon fiber. The outlet filter element 360 includes an upper shell 361 and a lower shell 362 that are interlocked with each other. After the upper shell 361 and the lower shell 362 are interlocked, they form a filling cavity 363, in which the outlet filter media is filled. To facilitate the assembly and disassembly of the upper housing 361 and the lower housing 362, an upper retaining ring 3611 is formed axially around the water outlet end of the upper housing 361. A snap fastener 3612 is formed circumferentially at the end of the outer wall of the upper retaining ring 3611, and a guide block 3613 is also formed axially on the outer wall of the upper retaining ring 3611. A lower retaining ring 3621 is formed axially around the water inlet end of the lower housing 362. A concave limiting groove is formed circumferentially at the bottom of the inner side wall of the lower retaining ring 3621. 21 The side wall also forms an axial guide port 3622. When the upper shell 361 and the lower shell 362 are assembled, the water outlet filter material is filled in the upper baffle ring 3611, the guide block 3613 is introduced into the guide port 3622, the upper baffle ring 3611 is inserted into the lower baffle ring 3621, and the buckle 3612 is engaged in the limiting groove to complete the assembly. At this time, the upper baffle ring 3611 and its water inlet bottom and the water outlet bottom of the lower baffle ring 3621 form a filling cavity 363.

[0033] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] The term “several” means one or more, and “multiple” means two or more, unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0037] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A filter element for installation in the handle of a handheld shower head, characterized in that, The filter element (100) includes a filter element body (110) having a receiving cavity (111) for filling filter media, the receiving cavity (111) being defined by a side wall (1111) and a bottom wall (1112); the filter element body (110) having an inlet end (112) and an outlet end (113) communicating with the receiving cavity (111), at least the inlet end (112) or the outlet end (113) being designed to have a detachable end.

2. A filter element as described in claim 1, characterized in that, The outlet end (113) of the filter body (110) is designed to have a detachable end.

3. A filter element as described in claim 2, characterized in that, The filter element (100) also includes an end cap (120). The water outlet end (113) of the filter element body (110) is provided with an opening (114) communicating with the receiving cavity (111). The end cap (120) and the opening (114) are detachably connected. The end cap (120) is provided with a first water passage hole (121) along the axial direction.

4. A filter element as described in claim 3, characterized in that, The end cap (120) is threadedly connected to the opening (114) of the filter body (110).

5. A filter element as described in claim 3, characterized in that, One side of the end cap (120) is connected to the receiving cavity (111) of the filter body (110), and the other side of the end cap (120) is provided with a first filter screen (130). The first filter screen (130) is provided with a first filter hole (131). The diameter of the first filter hole (131) is smaller than the diameter of the first water passage hole (121).

6. A filter element as described in claim 5, characterized in that, The filter element (100) further includes a first limiting ring (140), on which a first hook (141) is provided; the end cap (120) is provided with a first support portion (122) along the axial direction on the side opposite to the filter element body (110), on which a first circumferential groove (1221) is provided, and the first circumferential groove (1221) is used for the first hook (141) to be engaged; the first filter screen (130) is limited between the first limiting ring (140) and the end cap (120).

7. A filter element as described in claim 2, characterized in that, The filter element body (110) has a second water passage hole (115) on the end face of the water inlet end (112). The filter element body (110) has a second filter screen (150) located at the water inlet front end of the second water passage hole (115). The second filter screen (150) has a second filter hole (151). The diameter of the second filter hole (151) is smaller than the diameter of the second water passage hole (115).

8. A filter element as described in claim 7, characterized in that, The filter element (100) further includes a second limiting ring (160), on which a second hook (161) is provided; the end face of the water inlet end (112) of the filter element body (110) is provided with a second support part (116) along the axial direction, and the second support part (116) is provided with a second circumferential groove (1161), which is used for the second hook (161) to be engaged; the second filter screen (150) is limited between the second limiting ring (160) and the end face of the water inlet end of the filter element body (110).

9. A filter element as described in claim 1, characterized in that, The side wall of the water inlet end (112) of the filter element body (110) is provided with a water inlet hole (117) that communicates with the receiving cavity (111).

10. A handheld shower head with a filter element, characterized in that, It includes a handle (200) and a water outlet (300) connected to each other, wherein the handle (200) is provided with a filter element (100) as described in any one of claims 1 to 9.

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