Quick dismounting and mounting structure for filter element of shower

Abstract

The utility model discloses a quick disassembly and assembly structure for a filter element of a shower, which does not need to close a water path main valve when the filter element is replaced, automatically seals a water path when the filter element is disassembled, and is simple and convenient to disassemble and assemble. The quick filter element dismounting and mounting structure of the shower comprises a shell, a plug, a first spring, a filter element and a limiting block, a water passing cavity is formed in the shell, a water inlet and a water outlet communicated with the water passing cavity are formed in the first end and the circumferential face of the shell respectively, and a movable hole is formed in the water passing cavity through a partition plate. The second end of the shell is provided with an installation opening communicating with the water passing cavity. The plug and the first spring are arranged between the water inlet and the partition plate, and the plug blocks the movable hole under the action of the first spring; the filter element movably penetrates into the mounting opening, and the first end of the filter element is provided with a water inlet pipe penetrating through the movable hole in a movable sealing manner; at least one filtering inlet is formed in the circumferential surface of the water inlet pipe, and a plurality of filtering outlets are uniformly formed in the circumferential surface of the filter element; the limiting block is detachably installed in the installation opening in a sealed mode so as to limit axial movement of the filter element.

Description

Technical Field

[0001] This utility model belongs to the field of shower technology, and specifically refers to a quick-release and reassembly structure for a shower filter. Background Technology

[0002] Due to differences in water quality in different regions, in order to ensure the purity of water and prevent scale or contamination inside devices such as shower heads and overhead sprayers, and considering the high cost of installing filter cartridges inside shower heads and overhead sprayers, the usual practice is to install filter cartridges in the shower to filter out impurities before water flow is distributed.

[0003] Current shower filter designs have some inconveniences, especially when replacing the filter, as the main water valve must be shut off first to prevent leaks. Furthermore, the filter is typically secured inside the shower unit with a threaded connection, requiring multiple turns of the threads for removal and installation, making the process cumbersome. Given the need for regular filter replacement, the existing installation structure creates additional inconvenience for users, resulting in a poor user experience. Utility Model Content

[0004] The main purpose of this utility model is to provide a quick-release and reinstallation structure for the filter element of a shower, which solves the problems existing in the prior art. When replacing the filter element, it is not necessary to close the main water valve. When the filter element is removed, the water circuit is automatically closed. Moreover, the disassembly and reinstallation operation is simple and convenient.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A quick-release filter cartridge structure for a shower includes a housing, a plug, a first spring, a filter cartridge, and a limiting block. The housing has a water-passing cavity, with an inlet and an outlet communicating with the cavity at its first end and circumferential surface, respectively. A movable hole is formed within the water-passing cavity via a partition. The second end of the housing has an installation port communicating with the water-passing cavity. The plug and the first spring are positioned between the inlet and the partition, with the plug sealing the movable hole under the action of the first spring. The filter cartridge is movably inserted into the installation port, with a dynamically sealed inlet pipe passing through the movable hole at its first end. At least one filter inlet is provided on the circumferential surface of the inlet pipe, and several filter outlets are evenly distributed on the circumferential surface of the filter cartridge. The limiting block is sealed and detachably installed within the installation port to restrict the axial movement of the filter cartridge, allowing the inlet pipe to push the plug away from the movable hole and compress the first spring.

[0007] A locking element is radially slidably fitted on the second end circumferential surface of the outer shell; a through hole is provided between the two sides of the locking element; a limiting ring groove is provided on the circumferential surface of the limiting block; a second spring is provided between the locking element and the inner wall of the outer shell; during assembly, the filter element and the limiting block pass through the through hole in sequence until the side wall of the through hole is opposite to the limiting ring groove, and the locking element is embedded in the limiting ring groove under the action of the second spring.

[0008] Preferably, the second end circumferential surface of the housing is provided with a sliding opening, and both sides of the sliding opening are provided with sliding grooves for the two wings of the locking member to slide and engage; the second spring is provided on the side wall inside the housing opposite to the sliding opening.

[0009] Preferably, the locking member has spring clips on both wings, and the spring clips on both wings are movably hooked onto the steps located at the inner ends of the sliding grooves on both sides.

[0010] Preferably, the locking member has a mounting post at its end for the second spring to be sleeved, and the inner wall of the outer casing has a positioning groove for the end of the second spring to be embedded.

[0011] The outer casing includes an outer casing body and a connector threadedly connected to the outer casing body; the connector serves as the first end of the outer casing and is provided with the water inlet; the water passage cavity, water outlet, partition, and mounting port are all provided on the outer casing body.

[0012] The plug has at least one guide flange on its circumferential surface, and the inner wall of the water passage cavity has a guide groove for sliding engagement with the guide flange.

[0013] Preferably, the circumferential surface of the plug is provided with at least one first sealing ring, which dynamically seals between the circumferential surface of the plug and the inner wall of the water passage cavity as the plug moves axially; the sealing stroke of the first sealing ring is less than the stroke of the plug.

[0014] The end face of the plug facing the filter element is provided with a groove for the end of the water inlet pipe 1 to be embedded; the end face of the plug facing away from the filter element is provided with a groove, which is positioned opposite to the water inlet; the end of the first spring is embedded in the groove.

[0015] The water inlet pipe is provided with a second sealing ring on its circumference, which is dynamically sealed and fits into the side wall of the movable hole; the limiting block is provided with a third sealing ring on its circumference, which is dynamically sealed and fits into the inner wall of the mounting port.

[0016] After adopting the above technical solution, the present invention has the following technical effects:

[0017] When the filter element is properly installed into the housing, its axial movement is restricted by the limiting block, causing the inlet pipe to push up the plug. This allows the interior of the filter element to connect with the inlet through the filter inlet on the circumference of the inlet pipe. Water flows sequentially through the inlet, filter inlet, interior of the filter element, and filter outlet before exiting the outlet, thus achieving the filtration function. When the filter element is removed, the plug is no longer subjected to the force of the filter element in the axial direction of the housing, so it resets under the action of the first spring, sealing the movable hole and cutting off the water flow. This allows the main water valve to be turned off when replacing the filter element in the shower. Furthermore, the filter element is installed and fixed by the limiting block, eliminating the need for threaded connections. Disassembling and assembling the filter element only requires removing and installing the limiting block, eliminating the need to rotate the threads several times, making it convenient and quick. Attached Figure Description

[0018] Figure 1 This is a perspective view of a specific embodiment of the present utility model.

[0019] Figure 2 This is an exploded view of a specific embodiment of the present utility model.

[0020] Figure 3 This is a cross-sectional view of the filter element installation state according to a specific embodiment of the present utility model.

[0021] Figure 4 This is a cross-sectional view of the filter element in disassembled state according to a specific embodiment of this utility model.

[0022] Explanation of icon numbers:

[0023] 1-Outer shell; 1a-Outer shell body; 1b-Connector; 11-Water passage cavity; 111-Guide groove; 12-Inlet; 13-Outlet; 14-Baffle; 141-Modible hole; 15-Mounting port; 16-Sliding opening; 161-Slide groove; 17-Positioning groove; 2-Plug; 21-Guide flange; 22-Embedded groove; 23-Groove; 3-First spring; 4-Filter element; 41-Inlet pipe; 42-Filter inlet; 43-Filter outlet; 5-Limiting block; 51-Limiting ring groove; 6-Locking element; 61-Through hole; 62-Spring buckle; 63-Mounting post; 7-Second spring; 8-First sealing ring; 9-Second sealing ring; 10-Third sealing ring; 20-Handle. Detailed Implementation

[0024] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0025] refer to Figure 1-4 As shown, this utility model discloses a quick-release and disassembly structure for a shower filter element, including a housing 1, a plug 2, a first spring 3, a filter element 4, and a limiting block 5;

[0026] The outer casing 1 is provided with a water passage cavity 11. The first end and the peripheral surface of the water passage cavity 11 are respectively provided with an inlet 12 and an outlet 13 communicating with the water passage cavity 11. A movable hole 141 is formed in the water passage cavity 11 through a partition 14. The second end of the outer casing 1 is provided with an installation port 15 communicating with the water passage cavity 11.

[0027] The plug 2 and the first spring 3 are positioned between the water inlet 12 and the baffle 14, and the plug 2 blocks the movable hole 141 under the action of the first spring 3;

[0028] The filter element 4 is movably inserted into the installation port 15, and its first end is provided with a water inlet pipe 41 that is dynamically sealed through the movable hole 141; the circumferential surface of the water inlet pipe 41 is provided with at least one filter inlet 42, and the circumferential surface of the filter element 4 is evenly provided with a number of filter outlets 43.

[0029] The limiting block 5 is sealed and detachably installed in the mounting port 15 to restrict the axial movement of the filter element 4 so that the water inlet pipe 41 pushes the plug 2 away from the movable hole 141 and compresses the first spring 3.

[0030] Based on the above solutions, refer to Figure 3 , 4 As shown, when the filter element 4 is properly installed into the outer shell 1, the axial movement of the filter element 4 is restricted by the limiting block 5, causing the inlet pipe 41 to push up the plug 2. This allows the interior of the filter element 4 to connect with the inlet 12 through the filter inlet 42 on the circumference of the inlet pipe 41. The water flows sequentially through the inlet 12, the filter inlet 42, the interior of the filter element 4, and the filter outlet 43 before flowing out of the outlet 13, thus achieving the function of filtering the water. When the filter element 4 is removed, the plug 2 is no longer subjected to the force of the filter element 4 in the axial direction of the outer shell 1. Therefore, it resets under the action of the first spring 3, sealing the movable hole 141. In other words, the water flow is cut off by the plug 2, allowing the shower to replace the filter element 4 without shutting off the main water valve. At the same time, the filter element 4 is installed and fixed by the limitation of the limiting block 5, without relying on a threaded connection. During the process of disassembling and assembling the filter element 4, only the limiting block 5 needs to be disassembled and assembled, eliminating the need to rotate the threads several times, making it convenient and quick.

[0031] The following are specific embodiments of the present invention.

[0032] A locking element 6 is radially slidably fitted onto the second end circumferential surface of the aforementioned outer casing 1; a through hole 61 is provided between the two sides of the locking element 6; a limiting ring groove 51 is provided on the circumferential surface of the limiting block 5; a second spring 7 is provided between the locking element 6 and the inner wall of the outer casing 1; during assembly, the filter element 4 and the limiting block 5 pass through the through hole 61 in sequence until the side wall of the through hole 61 is opposite to the limiting ring groove 51, and the locking element 6 is embedded into the limiting ring groove 51 under the action of the second spring 7. Thus, by designing the locking element 6 and the second spring 7, the limiting block 5 and the filter element 4 can be quickly fixed, and the axial movement of the limiting block 5 and the filter element 4 is restricted by the locking element 6 being embedded into the limiting ring groove 51, thereby maintaining the water passage connection when the filter element 4 is installed. When it is necessary to replace the filter element 4, it is only necessary to operate the locking element 6 to compress the second spring 7, which is very simple and quick.

[0033] Furthermore, the second end circumferential surface of the outer casing 1 is provided with a sliding opening 16, and both sides of the sliding opening 16 are provided with sliding grooves 161 for the two wings of the locking member 6 to slide and engage; the second spring 7 is provided on the side wall of the outer casing 7 opposite to the sliding opening 16.

[0034] Secondly, the locking member 6 is provided with spring buckles 62 on both wings. The spring buckles 62 on both wings are respectively hooked onto the steps provided on the inner ends of the sliding grooves 161 on both sides, which can prevent the locking member 6 from coming out of the sliding opening 16 due to the elastic force of the second spring 7.

[0035] Meanwhile, the end of the locking member 6 is provided with a mounting post 63 for the second spring 7 to be sleeved, and the inner wall of the outer shell 1 is provided with a positioning groove 17 for the end of the second spring 7 to be embedded.

[0036] The aforementioned outer casing 1 includes an outer casing body 1a and a connector 1b threadedly connected to the outer casing body 1a. The connector 1b, serving as the first end of the outer casing 1, is provided with the aforementioned water inlet 12. The water passage cavity 11, water outlet 13, partition 14, and mounting port 15 are all located on the outer casing body 1a. The separate design of the outer casing body 1a and connector 1b, assembled via a threaded connection, facilitates the installation of the internal plug 2 and the first spring 3, and also facilitates the molding of the relevant internal structures of the outer casing 1. Since frequent disassembly and assembly are not required, the threaded connection does not affect the user's operating experience but ensures good sealing performance. In this embodiment, the connector 1b is provided with an internal hexagonal hole, allowing for easy disassembly and assembly by using tools to tighten the connector 1b.

[0037] The aforementioned plug 2 has at least one guide flange 21 on its circumferential surface, and the inner wall of the water passage cavity 11 has a guide groove 111 for sliding engagement with the guide flange 21. Through the sliding engagement between the guide flange 21 and the guide groove 111, the axial movement of the plug 2 can be guided, ensuring the stability of its position and function, that is, ensuring that the movable hole 141 can be effectively sealed when the filter element 4 is removed.

[0038] Furthermore, the circumferential surface of the plug 2 is provided with at least one first sealing ring 8. The first sealing ring 8 dynamically seals between the circumferential surface of the plug 2 and the inner wall of the water passage cavity 11 as the plug 2 moves axially. This further seals the gap between the plug 2 and the inner wall of the water passage cavity 11 when the end face of the plug 2 blocks the movable hole 141, resulting in better leak-proof performance. In this embodiment, the connector 1b is threadedly fitted onto the end of the outer shell body 1a, forming a step on the inner wall of the water inlet end of the water passage cavity 11. The outer diameter of the first sealing ring 8 is smaller than the inner diameter of the connector 1b. Therefore, when the first sealing ring 8 is inside the connector 1b, the plug 2 will not block the end of the outer shell body 1a.

[0039] Secondly, the sealing stroke of the first sealing ring 8 is less than the stroke of the plug 2, so as to ensure that the first sealing ring 8 has already cut off the connection between the water inlet 12 and the movable hole 141 before the filter element 4 is removed from the plug 2.

[0040] The end face of the plug 2 facing the filter element 4 is provided with a groove 22 for the end of the water inlet pipe 41 to be embedded. Therefore, when the water inlet pipe 41 abuts against the plug 2 and pushes the plug 2 to compress the first spring 3, the plug 2 is not easy to shake.

[0041] The end face of the plug 2 facing away from the filter element 4 is provided with a groove 23, which is opposite to the water inlet 12; the end of the first spring 3 is embedded in the groove 23. Thus, the groove 23 not only positions the end of the first spring 3, but also increases the area on which the water flow acts on the plug 2, making the plug 2 easier to be pushed by the water flow entering through the water inlet 12 to quickly seal the movable hole 141.

[0042] The circumferential surface of the aforementioned water inlet pipe 41 is provided with a second sealing ring 9 that dynamically seals against the side wall of the movable hole 141; the circumferential surface of the limiting block 5 is provided with a third sealing ring 10 that dynamically seals against the inner wall of the mounting port 15.

[0043] The aforementioned limiting block 5 is threadedly connected to the filter element 4, which can ensure that the filter element 4 is structurally stable and does not shake. A handle 20 is installed on the end face of the limiting block 5 facing away from the filter element 4. The handle 20 is fixed to the limiting block 5 by screws, making it convenient for users to operate the limiting block 5 to disassemble and assemble.

[0044] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A quick-release and removable filter element structure for a shower, characterized in that: Includes the outer casing, plug, first spring, filter element, and limit block; The outer casing is provided with a water passage cavity, and its first end and peripheral surface are respectively provided with a water inlet and a water outlet communicating with the water passage cavity, and a movable hole is formed in the water passage cavity through a partition; the second end of the outer casing is provided with an installation port communicating with the water passage cavity; The plug and the first spring are disposed between the water inlet and the partition, and the plug seals the movable hole under the action of the first spring; The filter element is movably inserted into the mounting port, and its first end is provided with a water inlet pipe that is dynamically sealed through the movable hole; the circumferential surface of the water inlet pipe is provided with at least one filter inlet, and the circumferential surface of the filter element is provided with a plurality of filter outlets evenly distributed. The limiting block is sealed and detachably installed in the mounting port to restrict the axial movement of the filter element, so that the water inlet pipe pushes the plug away from the movable hole and compresses the first spring.

2. The quick-release structure for the shower filter element as described in claim 1, characterized in that: A locking element is radially slidably fitted on the second end circumferential surface of the outer shell; a through hole is provided between the two sides of the locking element; a limiting ring groove is provided on the circumferential surface of the limiting block; a second spring is provided between the locking element and the inner wall of the outer shell; during assembly, the filter element and the limiting block pass through the through hole in sequence until the side wall of the through hole is opposite to the limiting ring groove, and the locking element is embedded in the limiting ring groove under the action of the second spring.

3. The quick-release structure for the shower filter element as described in claim 2, characterized in that: The second end circumferential surface of the outer casing is provided with a sliding opening, and both sides of the sliding opening are provided with sliding grooves for the two wings of the locking member to slide and engage; the second spring is provided on the side wall inside the outer casing opposite to the sliding opening.

4. The quick-release structure for the shower filter cartridge as described in claim 3, characterized in that: The locking member has spring clips on both wings, and the spring clips on both wings are respectively hooked onto the steps located at the inner ends of the sliding grooves on both sides.

5. The quick-release structure for the shower filter element as described in claim 3, characterized in that: The locking member has a mounting post at its end for the second spring to be sleeved, and the inner wall of the outer casing has a positioning groove for the end of the second spring to be embedded.

6. The quick-release structure for the shower filter element as described in claim 1, characterized in that: The outer casing includes an outer casing body and a connector threadedly connected to the outer casing body; the connector serves as the first end of the outer casing and is provided with the water inlet; the water passage cavity, water outlet, partition, and mounting port are all provided on the outer casing body.

7. The quick-release structure for the shower filter element as described in claim 1, characterized in that: The plug has at least one guide flange on its circumferential surface, and the inner wall of the water passage cavity has a guide groove for sliding engagement with the guide flange.

8. The quick-release structure for the shower filter element as described in claim 7, characterized in that: The plug has at least one first sealing ring on its circumferential surface. The first sealing ring dynamically seals between the circumferential surface of the plug and the inner wall of the water passage cavity as the plug moves axially. The sealing stroke of the first sealing ring is less than the stroke of the plug.

9. The quick-release structure for the shower filter element as described in claim 1, characterized in that: The end face of the plug facing the filter element has a groove for the end of the water inlet pipe to be embedded in; the end face of the plug facing away from the filter element has a groove, which is opposite to the water inlet; the end of the first spring is embedded in the groove.

10. The quick-release structure for the shower filter element as described in claim 1, characterized in that: The water inlet pipe is provided with a second sealing ring on its circumference, which is dynamically sealed and fits into the side wall of the movable hole; the limiting block is provided with a third sealing ring on its circumference, which is dynamically sealed and fits into the inner wall of the mounting port.

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