A filter assembly for a water purifier

Abstract

The utility model discloses a filter assembly for water purifier, including filter shell still includes one end fixedly connected in the water pipe of filter shell one end, detachable installation top cover in the other end of filter shell, one end fixedly connected on the inlet pipe of top cover, install the mounting assembly and sealing assembly on top cover and filter shell, fixedly connected on the center flow guide column of top cover, the flow guide hole of opening in center flow guide column, detachable installation filter frame on filter shell, open the filter hole on filter frame, fixedly connected in the flow guide plate of filter frame outside. Through the collaborative design of center flow guide column, flow guide hole and radial flow guide plate, let raw water even permeate to each region of filling activated carbon layer, compared with prior art, the water flow contact area and activated carbon utilization rate are greatly improved, the problem that the rest area is idle is avoided, the service life of filter core is prolonged, and material waste and use cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of filter component technology, specifically a filter component for a pure water machine. Background Technology

[0002] The filter component of a water purifier is the core functional module of the water purifier. It is installed between the raw water inlet channel and the purified water outlet. Through the synergistic interception, adsorption and separation of multi-stage structured filter elements, it removes impurities and pollutants such as sediment, rust, residual chlorine, heavy metals, bacteria, organic matter, and scale from the raw water, reduces the water hardness and TDS value, and finally produces pure water that meets drinking standards. It is a key component to ensure the water quality and operational stability of the water purifier.

[0003] In existing technologies, traditional activated carbon filter cartridges mostly adopt a single hollow cylindrical structure without any specific water flow guiding or diversion components inside. Their water inlet method is typically radial, meaning raw water seeps radially into the filter cartridge from the side holes or end face of the outer shell. Because the flow path is shorter and the resistance is lower at the filter cartridge edges during radial permeation, raw water preferentially forms concentrated flow channels along the edges. This results in a significantly higher contact frequency between the activated carbon and water flow at the edges compared to the center, leading to a highly concentrated adsorption load. Pollutants quickly adhere to and accumulate on the surface of the edge activated carbon, causing it to reach adsorption saturation first. Meanwhile, the activated carbon in the center of the filter cartridge is blocked by the concentrated flow channels at the edges and the water seepage... Due to the influence of the resistance, water flow cannot penetrate evenly and fully into the area. Most of the activated carbon remains "idle" for a long time and cannot effectively participate in the adsorption reaction. The adsorption efficiency remains at a low level, which means that the overall adsorption capacity of the filter element is not fully utilized, and the actual usable effective adsorption area is greatly reduced. This not only causes unnecessary waste of activated carbon material and increases the user's operating costs, but also forces the entire filter element to be replaced due to the premature saturation of activated carbon in the edge area, directly shortening the actual service life of the filter element. Moreover, after the edge activated carbon is saturated, some pollutants that have not been effectively adsorbed may penetrate the filter element with the water flow, thereby increasing the treatment pressure of subsequent filtration units and affecting the stability of the final effluent water quality. Utility Model Content

[0004] The purpose of this invention is to provide a filtration component for a water purifier, in order to solve the problems mentioned in the background art, such as the water flow of traditional activated carbon filter cartridges tending to concentrate in the edge area, low adsorption efficiency of the central activated carbon, and short service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a filter assembly for a pure water machine, including a filter housing, an outlet pipe fixedly connected to one end of the filter housing, a top cover detachably installed at the other end of the filter housing, an inlet pipe fixedly connected to the top cover, an installation assembly and a sealing assembly installed on the top cover and the filter housing, a central guide column fixedly connected to the top cover, a guide hole opened on the central guide column, a filter frame detachably installed on the filter housing, a filter hole opened on the filter frame, a guide plate fixedly connected to the outside of the filter frame, a support frame fixedly connected to the bottom of the filter frame, and an activated carbon layer filled between the filter frame and the filter housing. The guide plate is in contact with the inner wall of the filter housing, the support frame is in contact with the filter housing, and the top of the filter frame is in contact with the top cover. The installation assembly installs or removes the top cover; the sealing assembly seals the installation point of the top cover and the filter frame; the installed top cover limits and fixes the filter frame, and the filter frame can be removed from the inner cavity of the filter housing after the top cover is removed.

[0006] Based on the preferred embodiment of this technical solution, several groups of guide holes are provided, and these groups of guide holes are evenly distributed on the central guide column.

[0007] Based on the preferred embodiment of this technical solution, the filter holes are provided in several groups, and the several groups of filter holes are evenly distributed on the filter frame.

[0008] Based on the preferred embodiment of this technical solution, several groups of guide plates are set up, and the groups of guide plates are distributed sequentially from top to bottom on the filter frame. Each group is equipped with four guide plates evenly distributed in a ring. The guide plates "evenly divide" the raw water introduced by the central guide column into several independent water streams, so that each water stream corresponds to a fixed area filled with activated carbon layer.

[0009] According to the preferred embodiment of this technical solution, the installation components include a positioning pin fixedly connected to the filter housing, a light rod slidably connected to the filter housing, a locking block fixedly connected to one end of the light rod, a lever fixedly connected to the other end of the light rod, and a compression spring fixedly connected between the locking block and the filter housing. The positioning pin passes through the top cover, the locking block is slidably connected to the filter housing, the locking block is engaged with the top cover, and the compression spring provides elasticity to the locking block.

[0010] In the preferred embodiment of this technical solution, the top cover has a positioning hole at the corresponding position of the positioning pin, and the positioning pin is set at the positioning hole of the top cover; one end of the card block is set as an arc shape, and the other end is set as a straight plate shape. The top cover first contacts the arc end of the card block, and the top cover has a card groove at the corresponding position of the card block, and the card block is engaged with the card groove of the top cover.

[0011] According to the preferred embodiment of this technical solution, the sealing assembly includes a sealing frame fixedly connected to the top cover and a sealing gasket fixedly connected to the filter housing, wherein the sealing frame is detachably installed on the filter housing.

[0012] In a preferred embodiment of this technical solution, the filter housing has a slot at the corresponding position of the sealing frame. The sealing frame is detachably installed in the slot of the filter housing, and the sealing gasket is fixedly connected to the inner wall of the slot of the filter housing. The sealing gasket seals the connection between the sealing frame and the filter housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. Through the coordinated design of the central guide column, guide holes and radial guide plates, the raw water can be evenly penetrated into each area of ​​the activated carbon layer. Compared with the existing technology, this greatly improves the water flow contact area and activated carbon utilization rate, avoids the problem of local adsorption saturation and idle areas, extends the service life of the filter element, and reduces material waste and usage costs.

[0014] 2. The elastic snap-fit ​​installation assembly, consisting of a positioning pin, a locking block, and a compression spring, allows for quick disassembly and assembly of the top cover without additional tools compared to existing technologies. This facilitates the removal of the filter frame for maintenance, while also providing a stable and durable structure that significantly improves the ease of maintenance and reliability of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating an embodiment of a filter assembly for a pure water machine according to the present invention; Figure 2 This is a schematic diagram showing the disassembled structure of the filter housing, top cover, and filter frame of this utility model; Figure 3 This is a schematic diagram of the planar structure of the activated carbon layer of this utility model; Figure 4 This is a schematic diagram of the guide plate structure of this utility model; Figure 5 This is a schematic diagram of the installation component and sealing component of this utility model.

[0016] In the diagram: 1. Filter housing; 21. Central guide column; 22. Filter frame; 23. Guide plate; 24. Support frame; 25. Activated carbon layer; 26. Guide hole; 27. Filter hole; 31. Sealing frame; 32. Sealing gasket; 33. Positioning pin; 34. Smooth rod; 35. Toggle block; 36. Locking block; 37. Compression spring; 4. Top cover; 5. Inlet pipe; 6. Outlet pipe. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-5 This utility model provides an embodiment of a water purifier filter assembly, including a filter housing 1, an outlet pipe 6 fixedly connected to one end of the filter housing 1, a top cover 4 detachably installed at the other end of the filter housing 1, an inlet pipe 5 fixedly connected to the top cover 4, an installation assembly and a sealing assembly installed on the top cover 4 and the filter housing 1, a central guide column 21 fixedly connected to the top cover 4, a guide hole 26 opened on the central guide column 21, a filter frame 22 detachably installed on the filter housing 1, a filter hole 27 opened on the filter frame 22, a guide plate 23 fixedly connected to the outside of the filter frame 22, a support frame 24 fixedly connected to the bottom of the filter frame 22, and an activated carbon layer 25 filled between the filter frame 22 and the filter housing 1. The guide plate 23 is in contact with the inner wall of the filter housing 1, the support frame 24 is in contact with the filter housing 1, and the filter frame 22... The top of the filter housing 1 is in contact with the top cover 4. The installation component allows the top cover 4 to be installed or removed. The sealing component seals the installation points of the top cover 4 and the filter frame 22. After installation, the top cover 4 limits and fixes the filter frame 22. After removing the top cover 4, the filter frame 22 can be taken out from the inner cavity of the filter housing 1. By integrating the core components such as the filter housing 1, top cover 4, central guide column 21, filter frame 22, and guide plate 23, a complete closed-loop structure of "water inlet - guide - filtration - adsorption - water outlet" is formed. At the same time, the installation component enables convenient installation and removal of the top cover 4 and the filter frame 22. The sealing component ensures the sealing performance of the installation point. The support frame 24 and the multi-point contact design enhance the structural stability. This ensures that the raw water completes filtration and adsorption according to the preset path and solves the problems of cumbersome installation and removal, poor sealing, and easy displacement of traditional components. It achieves simultaneous improvement in filtration effect, usage stability, and maintenance convenience.

[0019] Please see Figure 2 A further solution based on this embodiment is as follows: several groups of guide holes 26 are provided, and the several groups of guide holes 26 are evenly distributed on the central guide column 21. By setting the guide holes 26 into several groups and evenly distributing them on the central guide column 21, the raw water can flow evenly and smoothly into the filter frame 22 after entering the central guide column 21 from the water inlet pipe 5. This avoids the problem of local water flow impact and uneven flow velocity caused by single or concentrated distribution of guide holes 26, and ensures that the water flow pressure in each area of ​​the filter frame 22 is consistent. This lays the foundation for the uniform filtration of the subsequent filter holes 27 and the diversion adsorption of the guide plate 23, and improves the overall water flow stability and filtration uniformity of the filter assembly.

[0020] Please see Figure 2A further solution based on this embodiment is as follows: several sets of filter holes 27 are provided, and the several sets of filter holes 27 are evenly distributed on the filter frame 22. Through the design of several sets of evenly distributed filter holes 27, the water flow that has completed the preliminary filtration inside the filter frame 22 can evenly penetrate to the outside of the filter frame 22, avoiding the water flow from concentrating and overflowing in a local area of ​​the filter frame 22. This not only prevents a single filter hole 27 from clogging due to excessive flow, but also ensures that the activated carbon layer 25 on the outside of the filter frame 22 can receive water flow from each area simultaneously, providing a uniform water flow basis for the diversion function of the guide plate 23, further improving the adsorption utilization rate of the activated carbon layer 25 and extending its service life.

[0021] Please see Figure 2 A further solution based on this embodiment is as follows: several groups of guide plates 23 are arranged, and the groups of guide plates 23 are distributed sequentially from top to bottom on the filter frame 22. Each group is provided with four guide plates 23 evenly distributed in a ring. The guide plates 23 "evenly divide" the raw water introduced by the central guide column 21 into several independent water streams, so that each water stream corresponds to a fixed area of ​​the activated carbon layer 25. Through the design of several groups of guide plates 23 evenly distributed from top to bottom in a ring, the water flow outside the filter frame 22 can be accurately "evenly divided" into several independent water streams, so that each water stream corresponds to a fixed area of ​​the activated carbon layer 25. This completely changes the problem of uneven water flow distribution in traditional activated carbon filter cartridges, so that the center and edge areas of the activated carbon layer 25 can fully contact the water flow. This not only increases the contact area between the water flow and the activated carbon layer 25 by more than 30%, resulting in more complete adsorption, but also avoids the waste of local areas being saturated while other areas are idle. This significantly extends the actual service life of the activated carbon layer 25 and reduces the user's replacement cost.

[0022] Please see Figure 5A further solution based on this embodiment is as follows: the installation assembly includes a positioning pin 33 fixedly connected to the filter housing 1, a light rod 34 slidably connected to the filter housing 1, a locking block 36 fixedly connected to one end of the light rod 34, a lever block 35 fixedly connected to the other end of the light rod 34, and a compression spring 37 fixedly connected between the locking block 36 and the filter housing 1. The positioning pin 33 passes through the top cover 4, the locking block 36 is slidably connected to the filter housing 1, and the locking block 36 is engaged with the top cover 4. The compression spring 37 provides elastic force to the locking block 36. The mounting assembly, consisting of the compression spring 37 and the positioning pin 33, allows for quick installation and positioning of the top cover 4. The compression spring 37 provides continuous elastic force to the locking block 36, ensuring that the locking block 36 stably engages with the top cover 4, thus achieving rapid fixation of the top cover 4. During disassembly, simply moving the lever 35 is sufficient to disengage the locking block 36 from the top cover 4, eliminating the need for additional tools. This significantly simplifies the installation and disassembly process of the top cover 4, making it easier for users to remove the filter frame 22 for cleaning or replacement, thus improving the ease of maintenance of the filter assembly. At the same time, the elastic locking structure can adapt to long-term disassembly and assembly needs, exhibiting strong structural stability and a long service life.

[0023] Please see Figure 5 A further solution based on this embodiment is as follows: The top cover 4 has a positioning hole at the corresponding position of the positioning pin 33, and the positioning pin 33 is located at the positioning hole of the top cover 4; one end of the locking block 36 is arc-shaped, and the other end is straight. The top cover 4 first contacts the arc-shaped end of the locking block 36, and the top cover 4 has a locking groove at the corresponding position of the locking block 36. The locking block 36 engages with the locking groove of the top cover 4. Through the precise cooperation between the positioning hole of the top cover 4 and the positioning pin 33, the installation position of the top cover 4 and the filter housing 1 can be quickly calibrated. To avoid sealing failure or structural misalignment due to installation deviations, the arc-shaped design of the locking block 36 allows the top cover 4 to be automatically pushed to slide during installation via the guide effect of the inclined surface, eliminating the need for manual adjustment of the locking block 36 position and making installation smoother. The straight end engages with the slot of the top cover 4 to form a stable limiting structure, preventing the top cover 4 from loosening due to water flow impact or vibration during use. This not only improves the convenience of installation operations but also enhances the structural reliability of the top cover 4 after installation, ensuring the stability of the filter assembly.

[0024] Please see Figure 5A further solution based on this embodiment is as follows: the sealing assembly includes a sealing frame 31 fixedly connected to the top cover 4 and a sealing gasket 32 ​​fixedly connected to the filter housing 1. The sealing frame 31 is detachably installed on the filter housing 1. Through the sealing assembly composed of the sealing frame 31 and the sealing gasket 32, the sealing frame 31 can be embedded in the filter housing 1 to form a preliminary sealing barrier, blocking the direct contact between the raw water and the filtered water. The sealing gasket 32 ​​further fills the connection gap between the sealing frame 31 and the filter housing 1, forming a double sealing structure, which effectively avoids the leakage and seepage problems that are easy to occur in the traditional single sealing method. At the same time, the detachable connection between the sealing frame 31 and the filter housing 1 does not affect the normal disassembly and assembly of the top cover 4, ensuring that the sealing performance and maintenance convenience are taken into account, and ensuring that the water quality of the filter assembly is not affected by the mixing of raw water.

[0025] Please see Figure 5 A further solution based on this embodiment is as follows: the filter housing 1 has a slot at the corresponding position of the sealing frame 31. The sealing frame 31 is detachably installed in the slot of the filter housing 1, and the sealing gasket 32 ​​is fixedly connected to the inner wall of the slot of the filter housing 1. The sealing gasket 32 ​​seals the connection between the sealing frame 31 and the filter housing 1. Through the slot design on the filter housing 1, the sealing frame 31 can be accurately positioned for installation, ensuring that the connection position between the sealing frame 31 and the filter housing 1 is accurate and avoiding excessive sealing gap due to installation offset. The sealing gasket 32 ​​is fixed to the inner wall of the slot and can fit tightly with the outer wall of the sealing frame 31 to form an all-round sealing contact, completely sealing the tiny gap between the sealing frame 31 and the slot, effectively preventing water leakage from the connection or mixing of raw water and filtered water, further enhancing the sealing reliability of the sealing component, providing a strong guarantee for the stable filtration of the filter component, and ensuring that the quality of the effluent always meets the standards.

[0026] Working principle: Raw water first enters the central guide column 21 fixedly connected to the top cover 4 through the water inlet pipe 5 on the top cover 4. It is smoothly and evenly guided into the filter frame 22, which is detachably installed in the filter housing 1, through several sets of guide holes 26 evenly distributed on the central guide column 21. After the initial filtration is completed in the filter frame 22, the water flows through several sets of filter holes 27 evenly distributed on the filter frame 22 to the outside of the filter frame 22. Then, it is precisely divided into several independent water streams by four guide plates 23 that are distributed from top to bottom and evenly arranged in a ring on the outside of the filter frame 22. Each water stream fills the fixed area between the filter frame 22 and the filter housing 1 with activated carbon layer 25 and evenly penetrates it, so as to fully complete the adsorption and purification. The purified water is finally discharged through the outlet pipe 6 fixedly connected to one end of the filter housing 1. During the process, the installation components achieve quick positioning of the top cover 4 through the cooperation of the positioning pin 33 and the positioning hole of the top cover 4. With the help of the elastic force provided by the compression spring 37, the locking block 36 is firmly locked with the slot of the top cover 4, ensuring the installation stability of the top cover 4 and the filter frame 22. The sealing component is embedded into the slot of the filter housing 1 through the sealing frame 31, and forms a double seal with the sealing gasket 32 ​​on the inner wall of the slot to prevent water leakage or mixing of raw water and filtered water. The support frame 24 at the bottom of the filter frame 22 and the multi-point contact design between the filter frame 22 and the top cover 4 and the filter housing 1 further ensure that the components do not shift during the filtration process, ensuring a stable and efficient filtration process.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter assembly for a pure water machine, comprising a filter housing (1), characterized in that: It also includes an outlet pipe (6) fixedly connected to one end of the filter housing (1), a top cover (4) detachably installed on the other end of the filter housing (1), an inlet pipe (5) fixedly connected to the top cover (4), mounting components and sealing components installed on the top cover (4) and the filter housing (1), a central guide column (21) fixedly connected to the top cover (4), a guide hole (26) opened on the central guide column (21), a filter frame (22) detachably installed on the filter housing (1), a filter hole (27) opened on the filter frame (22), a guide plate (23) fixedly connected to the outside of the filter frame (22), and a fixed connection. The filter frame (22) has a support frame (24) at the bottom and an activated carbon layer (25) between the filter frame (22) and the filter housing (1). The guide plate (23) is in contact with the inner wall of the filter housing (1), the support frame (24) is in contact with the filter housing (1), and the top of the filter frame (22) is in contact with the top cover (4). The installation assembly installs or removes the top cover (4). The sealing assembly seals the installation point of the top cover (4) and the filter frame (22). The installed top cover (4) limits and fixes the filter frame (22). After removing the top cover (4), the filter frame (22) can be taken out from the inner cavity of the filter housing (1).

2. The filter assembly for a pure water machine according to claim 1, characterized in that: Several groups of guide holes (26) are provided, and the groups of guide holes (26) are evenly distributed on the central guide column (21).

3. The filter assembly for a pure water machine according to claim 1, characterized in that: The filter holes (27) are provided in several groups, and the filter holes (27) are evenly distributed on the filter frame (22).

4. A filter assembly for a pure water machine according to claim 1, characterized in that: Several groups of guide plates (23) are set up. The groups of guide plates (23) are distributed from top to bottom on the filter frame (22). Each group is equipped with four guide plates (23) evenly distributed in a ring. The guide plates (23) "evenly divide" the raw water introduced by the central guide column (21) into several independent water streams, so that each water stream corresponds to a fixed area filled with activated carbon layer (25).

5. A filter assembly for a pure water machine according to claim 1, characterized in that: The mounting components include a positioning pin (33) fixedly connected to the filter housing (1), a light rod (34) slidably connected to the filter housing (1), a locking block (36) fixedly connected to one end of the light rod (34), a lever (35) fixedly connected to the other end of the light rod (34), and a compression spring (37) fixedly connected between the locking block (36) and the filter housing (1). The positioning pin (33) passes through the top cover (4), the locking block (36) is slidably connected to the filter housing (1), the locking block (36) is engaged with the top cover (4), and the compression spring (37) provides elasticity to the locking block (36).

6. A filter assembly for a pure water machine according to claim 5, characterized in that: The top cover (4) has a positioning hole at the corresponding position of the positioning pin (33), and the positioning pin (33) is set at the positioning hole of the top cover (4); one end of the card block (36) is set as an arc shape, and the other end is set as a straight plate shape. The top cover (4) first contacts the arc end of the card block (36), and the top cover (4) has a card groove at the corresponding position of the card block (36), and the card block (36) is engaged in the card groove of the top cover (4).

7. A filter assembly for a pure water machine according to claim 1, characterized in that: The sealing assembly includes a sealing frame (31) fixedly connected to the top cover (4) and a sealing gasket (32) fixedly connected to the filter housing (1). The sealing frame (31) is detachably installed on the filter housing (1).

8. A filter assembly for a pure water machine according to claim 7, characterized in that: The filter housing (1) has a slot at the corresponding position of the sealing frame (31). The sealing frame (31) is detachably installed in the slot of the filter housing (1), and the sealing gasket (32) is fixedly connected to the inner wall of the slot of the filter housing (1). The sealing gasket (32) seals the connection between the sealing frame (31) and the filter housing (1).

Images