A filter cartridge assembly and water purification device

Abstract

This utility model discloses a filter element assembly, including a filter element, a filter element cylinder, a push rod, a support mechanism, and a water channel plate. The filter element has a buckle on its side wall. The push rod is located outside the filter element cylinder. The support mechanism is located at the lower end of the filter element cylinder. A slider mechanism is movably located within the support mechanism. One end of the slider mechanism has a guide hole. The push rod abuts against the wall of the guide hole, causing the slider mechanism to move. A return spring is provided on the slider mechanism. The other end of the slider mechanism has a slot. The movement of the slider mechanism locks or separates the buckle from the slot. The support mechanism is located on the water channel plate. The bottom of the filter element is connected to the water channel plate to form a water channel. The push rod has a guide post. The water channel plate has a positioning hole located below the guide hole. The guide post passes through the positioning hole, allowing the push rod to pass through the water channel plate. The push rod drives the slider mechanism to move away from the support mechanism, thus separating the slot from the buckle and unlocking the filter element. During the up-and-down movement of the push rod, the bottom of the push rod is always supported and guided by the water channel plate, thus reducing the likelihood of displacement and deformation, resulting in greater stability.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and more specifically, to a filter assembly and a water purification device. Background Technology

[0002] The filter cartridge is the core component of a water purification system, used to purify and filter water. After a period of use, impurities in the water will clog the filter cartridge, reducing its filtration capacity. Therefore, the filter cartridge needs to be replaced to ensure the normal operation of the water purification system. Water purifiers typically feature a detachable connection between the filter cartridge and the support mechanism for easy replacement. For user convenience, existing water purification systems usually have an external push rod and a locking ring on the support mechanism that engages with the filter cartridge. The push rod controls the rotation of the locking ring to lock or unlock the filter cartridge from the support mechanism. The filter cartridge locking ring is installed near the bottom of the filter cartridge, and the length of the push rod is usually the same as the height of the filter cartridge. To unlock the filter cartridge, the user needs to apply a certain amount of force to press the top of the push rod, causing the locking ring to rotate and unlock the filter cartridge. However, because the push rod is relatively long, when the user applies force to the top of the push rod, the contact area between the bottom of the push rod and the locking ring is prone to misalignment, and the push rod is susceptible to deformation. Over time, this poses a risk of unlocking failure. Summary of the Invention

[0003] The purpose of this utility model is to provide a filter element assembly to solve the problem that the push rod is easily deformed in the existing filter element disassembly structure.

[0004] The filter element assembly of this utility model can be achieved through the following technical solution:

[0005] A filter element assembly includes: a filter element with a snap fastener on its side wall; a filter element cylinder with an inner cavity for mounting the filter element; a push rod located outside the filter element cylinder; a support mechanism located at the lower end of the filter element cylinder, a slider mechanism movably located within the support mechanism, one end of the slider mechanism having a guide hole, the push rod abutting against the wall of the guide hole to move the slider mechanism, a return spring being provided on the slider mechanism, and a slot being provided at the other end of the slider mechanism, the snap fastener locking or separating from the slot through the movement of the slider mechanism; a water channel plate, the support mechanism located on the water channel plate, the bottom of the filter element connected to the water channel plate to form a water channel, a guide post being provided at the bottom of the push rod, a positioning hole being provided on the water channel plate, the positioning hole being located below the guide hole, and the guide post passing through the positioning hole.

[0006] In one embodiment, the side wall of the support mechanism is provided with a through hole for the slider mechanism to pass through during movement, the bottom of the slider mechanism is located on the water channel plate, the water channel plate is provided with a support block, and the return spring is located between the slider mechanism and the support block.

[0007] In one embodiment, a support is provided on the outer wall of the filter cartridge, a push rod is provided on the push rod, a button spring is sleeved on the push rod, the lower end of the push rod can move within the support, and the button spring is located above the support.

[0008] In one embodiment, two push rods are symmetrically arranged on the push rod, and the number of the support is adapted to the number of the push rods.

[0009] In one embodiment, the push rod is further provided with an inclined surface, which abuts against the wall of the guide hole. The width of the top of the guide hole is greater than the width of the bottom of the guide hole, and the width of the bottom of the guide hole is greater than the width of the positioning hole.

[0010] In one embodiment, the slider mechanism is provided with a positioning post, and the return spring is engaged between the positioning post and the support block.

[0011] In one embodiment, the support block is provided with a mounting post, and one end of the reset spring is engaged with the mounting post.

[0012] In one embodiment, the filter element is provided with a handle, and the handle has an arc-shaped portion. When the handle is lifted upward, the arc-shaped portion presses the push rod downward.

[0013] In one embodiment, there are two slider mechanisms and two push rods, which are symmetrically arranged with the filter element as the center.

[0014] This utility model also provides a water purification device, including the filter element assembly described above.

[0015] Compared with existing technologies, the filter element assembly of this utility model has the following advantages: the push rod drives the slider mechanism to move away from the support mechanism, thus separating the slot from the buckle and unlocking the filter element. The bottom of the push rod has a guide post, and a positioning hole is opened in the water channel plate. The guide post passes through the positioning hole and thus through the water channel plate. During the up and down movement of the push rod, the bottom of the push rod is always supported and guided by the water channel plate, so it is not easy to deviate or deform, and the stability is stronger. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. The following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the overall filter element assembly of this utility model;

[0018] Figure 2 This is an exploded view of the filter element assembly of this utility model;

[0019] Figure 3 This is a cross-sectional view of the filter element assembly of this utility model;

[0020] Figure 4 This is a schematic diagram of the combined installation of the water circuit board and the support mechanism in the filter element assembly of this utility model;

[0021] Figure 5 yes Figure 3 Enlarged view of section A.

[0022] The diagram shows: 1. Filter element; 11. Buckle; 12. Handle; 121. Arc-shaped part; 13. Interface; 2. Filter element cylinder; 21. Inner cavity; 22. Support; 221. Limiting hole; 3. Support mechanism; 31. Through hole; 4. Push rod; 41. Guide post; 42. Top rod; 43. Button spring; 44. Inclined surface; 5. Sliding block mechanism; 51. Guide hole; 52. Slot; 53. Return spring; 54. Positioning post; 6. Water circuit plate; 61. Positioning hole; 62. Support block; 621. Mounting post; 63. Filter element connector. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0024] like Figure 1-5As shown, a filter cartridge assembly includes a filter cartridge 1, a filter cartridge cylinder 2, a support mechanism 3, a push rod 4, a slider mechanism 5, and a water channel plate 6. The filter cartridge cylinder 2 has an inner cavity 21 with openings at the top and bottom. The filter cartridge 1 is installed in the inner cavity 21. The support mechanism 3 is located at the lower end of the filter cartridge cylinder 2 and is situated on the water channel plate 6. The bottom of the filter cartridge 3 has several interfaces 13, and the water channel plate 6 has several filter cartridge connectors 63. The interfaces 13 are respectively installed corresponding to the filter cartridge connectors 63, forming a water channel between the filter cartridge 3 and the water channel plate 6, thereby achieving water filtration and purification. The push rod 4 is located outside the filter cartridge cylinder 2, and the slider mechanism 5 is movably located inside the support mechanism 2. One end of the slider mechanism 5 has a guide hole 51, and the push rod 41 abuts against the wall of the guide hole 51 to push the slider mechanism 5 to move. The filter element 1 has a buckle 11 on its side wall, and the slider mechanism 5 has a slot 52 at the other end. The buckle 11 and the slot 52 are locked or separated by the movement of the slider mechanism 5, thereby locking or unlocking the filter element 1. The buckle 11 is located on the side wall near the bottom area of ​​the filter element 1. When the filter element 1 is installed, the buckle 11 can be located inside the support mechanism 3. When the slot 52 and the buckle 11 are separated, the filter element 1 is in the unlocked state and can be removed from the water channel plate 6; when the slot 52 and the buckle 11 are engaged and locked, the filter element 1 is in the locked state and cannot be removed. The slider mechanism 5 is provided with a return spring 53. When the push rod 4 pushes the slider mechanism 5 to move, the return spring 53 is compressed. Therefore, when the force applied to the push rod 4 is stopped, the return spring 53 generates a thrust to make the slider mechanism 4 move in the opposite direction to reset. In this embodiment, the return spring 53 can be clamped between the walls of the slider mechanism 5 and the support mechanism 3, or a stop mechanism can be provided on the water channel plate 6, with the return spring 53 clamped between the slider mechanism 5 and the stop mechanism. A guide post 41 is provided at the bottom of the push rod 4, and a positioning hole 61 is provided on the water channel plate 6. The positioning hole 61 is located below the guide hole 51, and the guide post 41 passes through the positioning hole 61, i.e., the guide post 41 passes through the slider mechanism 5 and the water channel plate 6. During the up-and-down movement of the push rod 4, the bottom of the push rod 4 is always supported by the water channel plate 6, making the push rod 4 stronger and less prone to deformation. Furthermore, as the push rod 41 moves up and down, the guide post 41 also moves within the positioning hole 61, guiding the movement of the bottom end of the push rod 4. This ensures that the push rod 4 abuts against the wall of the guide hole 51, preventing the bottom end of the push rod 4 from shifting and avoiding the risk of unlocking failure.

[0025] Furthermore, such as Figure 3-5As shown, the side wall of the support mechanism 3 has a through hole 31 for the slider mechanism 5 to pass through during movement, and the bottom of the slider mechanism 5 is located on the water channel plate 6. It can be understood that the bottom of the slider mechanism 5 slides back and forth on the water channel plate 6, and the slot 52 passes through the through hole 31 and is located inside the support mechanism 3. The movement of the slider mechanism 5 changes the position of the slot 52 in the support mechanism 3, thereby achieving engagement or disengagement between the slot 52 and the buckle 11. The slider mechanism 5 is designed to pass through the support mechanism 3, and the shape of the support mechanism 3 is not limited by the slider mechanism 5, simplifying the processing difficulty and reducing the size of the support mechanism 3. In this embodiment, the support mechanism 3 can be integrally formed with the water channel plate 6, or the support mechanism 3 can be installed on the water channel plate 6 via a buckle structure. It should be noted that the support mechanism 3 refers to a component that can provide fixed support for the filter element 1, and its specific shape can be diverse. The slider mechanism 5 is located on the water channel plate 6, and the water channel plate 6 provides support for the slider mechanism 5, improving the stability of the slider mechanism 5 and the push rod 4 during the filter element unlocking process. The push rod 4 is also provided with an inclined surface 44, which abuts against the wall of the guide hole 51. The top width of the guide hole 51 is greater than the bottom width, that is, the guide hole 51 is a through hole that is larger at the top and smaller at the bottom. Therefore, the wall of the guide hole 51 is inclined, which can better match the push rod 1. The bottom width of the guide hole 51 is greater than the width of the positioning hole 61 to meet the left and right sliding stroke of the slider mechanism 5.

[0026] Correspondingly, a support block 62 is provided on the water channel plate 6, and a return spring 53 is located between the slider mechanism 5 and the support block 62, so that when the push rod 1 pushes the slider mechanism 5 to move, the return spring 53 is compressed. Specifically, a positioning post 54 is provided on the slider mechanism 5, and the return spring 53 is engaged between the positioning post 54 and the support block 62, so that the return spring 53 is fixed on the slider mechanism 5. In this embodiment, a mounting post 621 is provided on the support block 62, and one end of the return spring 53 is engaged with the mounting post 621, so that the return spring 53 is limited between the slider mechanism 5 and the support block 62 and is not easy to fall off.

[0027] like Figure 1 and Figure 2As shown, a support 22 is provided on the outer wall of the filter cartridge 2, and a push rod 4 is provided on the push rod 4. A key spring 43 is sleeved on the push rod 42. A limiting hole 221 is provided on the support 22, and the lower end of the push rod 42 is inserted into the limiting hole 221, so that the lower end of the push rod 42 can move within the support 22. The key spring 43 is located above the support 22. When the push rod 4 is pressed, the push rod 4 moves downward, driving the push rod 42 to move downward. At this time, the key spring 43 is compressed due to the restriction of the support 22. When the push rod 4 pushes the slider mechanism 5 to the position, the filter cartridge 1 is disassembled. When the push rod 4 is released, the restoring force of the key spring 43 pushes the push rod 42 upward, thereby causing the entire push rod 4 to move upward and reset. Furthermore, two push rods 42 are provided on the push rod 4. The two push rods 42 are symmetrically arranged, and the number of supports 22 is matched with the number of push rods 42, so that the push rods 42 and supports 22 correspond one-to-one. Because the push rod 4 is relatively long, it needs to be designed with a certain width. If the button spring 43 is directly fitted onto the body of the push rod 4, the button spring 43 would need to match the size of the push rod 4, resulting in a larger bore diameter for the button spring 43. This could easily lead to a mismatch between the restoring force of the button spring 43 and the pushing force required for the push rod 4's reset stroke, increasing the risk of impact and damage to components during the push rod 4's reset. With this design, the push rod 42 is located on the side wall of the push rod 4's body, and its size is not limited. As long as the push rod 42 is compatible with the button spring 43, the reset stroke of the push rod 4 can be met.

[0028] like Figure 1 and 2 As shown, to make the interface of the water purification equipment more aesthetically pleasing, the push rod 1 is hidden below the interface. In this embodiment, the filter element 1 is provided with a handle 12, and the handle 12 has an arc-shaped part 121. When the handle 12 is lifted upward, the arc-shaped part 121 presses the push rod 41 downward. The push rod 41 moves downward and pushes the slider mechanism 5 to move, so that the slot 52 moves outward in the direction of the support mechanism 3. The slot 52 separates from the buckle 11, the filter element 1 is unlocked, and the filter element 1 can be pulled out of the filter element cylinder 1 directly through the handle 12. Furthermore, in order to simplify the structure, there are two slider mechanisms 5 and two push rods 4. One slider mechanism 5 corresponds to one push rod 4. The two slider mechanisms 5 are stacked on the water circuit plate 6, and the two push rods 4 are symmetrically arranged on the outer wall of the filter element cylinder 2 with the filter element 1 as the center. Pulling the handle 12 upward will unlock the filter element 1, and lowering the handle 12 will reset the slot 52 to complete the installation of the filter element 1. The operation is simple and quick. Furthermore, the two slider mechanisms 5 are independent of each other, yet can move synchronously, resulting in a simple overall structure.

[0029] This utility model also provides a water purification device, including the above-mentioned filter cartridge assembly, used for filtering and purifying water. The filter cartridge 1 can be a PP filter cartridge, a composite filter cartridge, an RO filter cartridge, etc., depending on the requirements of the water purification device. Furthermore, multiple filter cartridge assemblies can be installed in the water purification device to form multi-stage filtration.

[0030] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. For those skilled in the art, various modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. The protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A filter element assembly, characterized in that, include: The filter element has clips on its side wall; The filter cartridge has an inner cavity for mounting the filter element; The push rod is located outside the filter cartridge. A support mechanism is located at the lower end of the filter cartridge. A slider mechanism is movably located within the support mechanism. One end of the slider mechanism is provided with a guide hole. The push rod abuts against the wall of the guide hole to move the slider mechanism. A return spring is provided on the slider mechanism. The other end of the slider mechanism is provided with a slot. The movement of the slider mechanism enables the buckle to lock or separate from the slot. A water circuit board, the support mechanism is located on the water circuit board, the bottom of the filter element is connected to the water circuit board to form a water circuit, the bottom of the push rod is provided with a guide post, the water circuit board is provided with a positioning hole, the positioning hole is located below the guide hole, and the guide post passes through the positioning hole.

2. A filter element assembly according to claim 1, characterized in that, The side wall of the support mechanism is provided with a through hole for the slider mechanism to pass through during movement. The bottom of the slider mechanism is located on the water channel plate, and a support block is provided on the water channel plate. The return spring is located between the slider mechanism and the support block.

3. A filter element assembly according to claim 1 or 2, characterized in that, The filter cartridge is provided with a support on its outer wall, and a push rod is provided on the push rod. A button spring is sleeved on the push rod. The lower end of the push rod can move within the support, and the button spring is located above the support.

4. A filter element assembly according to claim 3, characterized in that, Two push rods are symmetrically arranged on the push rod, and the number of the support is adapted to the number of the push rods.

5. A filter element assembly according to claim 2, characterized in that, The push rod is also provided with an inclined surface, which abuts against the wall of the guide hole. The width of the top of the guide hole is greater than the width of the bottom of the guide hole, and the width of the bottom of the guide hole is greater than the width of the positioning hole.

6. A filter element assembly according to claim 2, characterized in that, The slider mechanism is provided with a positioning post, and the return spring is engaged between the positioning post and the support block.

7. A filter element assembly according to claim 6, characterized in that, The support block is provided with a mounting post, and one end of the reset spring is engaged with the mounting post.

8. A filter element assembly according to claim 1, characterized in that, The filter element is provided with a handle, and the handle has an arc-shaped part. When the handle is lifted upward, the arc-shaped part presses the push rod downward.

9. A filter element assembly according to claim 8, characterized in that, Both the slider mechanism and the push rod are provided in pairs, and they are arranged symmetrically with the filter element as the center.

10. A water purification device, characterized in that, Includes the filter element assembly as described in any one of claims 1-9.

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