Water purifier with filter element capable of being rapidly replaced
By designing limiting and supporting components, the problem of cumbersome filter replacement in water purifiers has been solved, enabling quick filter replacement and ensuring good water quality and the continued effectiveness of the water purifier.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-13
AI Technical Summary
Replacing existing water purifier filter cartridges is a cumbersome process, requiring the use of various tools or professional personnel, resulting in wasted time and money. Furthermore, failure to replace them for an extended period may lead to a decrease in filtration efficiency and affect water quality.
A water purifier with quick filter replacement, including limiting and supporting components, has been designed. Through a unique snap-fit block and spring structure, ordinary users can easily replace the filter. The threaded connection and support plate design simplify the operation process and ensure quick filter replacement and stable installation.
It enables quick and convenient replacement of filter cartridges, reduces the risk of decreased filtration effect due to prolonged lack of filter cartridge replacement, protects water quality, increases user motivation to replace filters, saves time and money, and ensures the water purifier continues to function well.
Smart Images

Figure CN223988208U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water purifier technology, specifically to a water purifier with quick filter replacement. Background Technology
[0002] In modern life, water purifiers have become an important device to ensure the safety of household water. A new type of water purifier with quick filter replacement is designed to enable users to replace water purifier filters conveniently and efficiently without complicated tools or professional skills through innovative design, which greatly saves time and energy, improves the user experience, and allows families to have high-quality water at any time.
[0003] Application No. 202420093986.0 discloses a pipeline water purifier. This utility model introduces tap water into the housing through an inlet pipe and a connecting pipe. The water flow is buffered by a buffer plate to prevent damage to the filter element from prolonged straight impact. The water is evenly distributed to the first filter element around the perimeter of the buffer plate for filtration. Since there are multiple first filter elements arranged in small units, the filter element has an increased contact area with the water, resulting in better filtration. Furthermore, the first filter element is connected by threads, which facilitates quick and easy disassembly during maintenance.
[0004] The above-mentioned devices involve cumbersome filter replacement, requiring various tools and even professional on-site operation. This not only wastes time and money but may also lead to a significant decrease in filtration efficiency due to prolonged failure to replace the filter cartridge, resulting in impurities and bacteria in the water not being effectively filtered out and affecting water quality. Therefore, we propose a water purifier with quick filter replacement. Utility Model Content
[0005] To address the shortcomings of existing technologies, this invention provides a water purifier with a quick-replacement filter cartridge. This solves the problem of cumbersome filter cartridge replacement procedures in the aforementioned devices, which require multiple tools and even professional on-site installation. This not only wastes time and money but also risks a significant decrease in filtration efficiency due to prolonged failure to replace the filter cartridge, resulting in impurities and bacteria in the water not being effectively filtered, thus affecting water quality.
[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a water purifier with quick filter replacement, comprising a housing, an installation cover at the top of the housing, a placement groove inside the housing, a filter element inside the placement groove, a snap-fit block inside the placement groove, a limiting component at the top of the placement groove, the limiting component limiting the top of the filter element through the snap-fit block, a support plate at the bottom of the placement groove, and a support component at the bottom end of the placement groove, the support component supporting the bottom end of the filter element through the support plate.
[0007] Preferably, the limiting component further includes a first spring and a push plate, the push plate being fixedly connected to the side wall of the snap-fit block, the first spring being fixedly connected between the side wall of the push plate and the inner wall of the housing, and the bottom of the snap-fit block contacting the top of the filter element.
[0008] Preferably, the support assembly further includes a fixing ring, a second spring, and a sealing ring. The fixing ring is fixedly connected to the inner wall of the placement groove, the support plate is slidably connected to the inner wall of the placement groove, the sealing ring is fixedly connected to the top of the support plate, and the second spring is fixedly connected between the top of the fixing ring and the bottom of the support plate.
[0009] Preferably, the support plate has a plurality of drainage grooves distributed in a circular pattern.
[0010] Preferably, a positioning sleeve is fixedly connected to the center of the top of the support plate.
[0011] Preferably, the side wall of the support plate is fixedly connected with two sets of protrusions, the inner wall of the placement groove is provided with a groove, the protrusions are slidably connected to the inner wall of the groove, and the bottom end of the placement groove is provided with a water outlet.
[0012] Preferably, the mounting cover is provided with a water inlet, the outer wall of the top of the mounting cover is provided with an external thread, the inner wall of the top of the placement groove is provided with an internal thread, and the internal thread matches the external thread.
[0013] Compared with the prior art, this utility model provides a water purifier with quick filter replacement, which has the following beneficial effects:
[0014] 1. This water purifier features quick-replacement filters. Compared to existing technologies, its unique design of limiting and supporting components allows ordinary users to easily replace filters without the need for various tools. This significantly saves time and effort, avoiding the expense of requiring professional assistance for complicated replacement procedures. The quick filter replacement also reduces the risk of decreased filtration efficiency due to prolonged filter inactivity, effectively protecting water quality and preventing impurities and bacteria from threatening the health of family members. Furthermore, it increases user motivation to replace filters, ensuring the purifier's continued effectiveness.
[0015] 2. This water purifier features a quick-replacement filter cartridge. The circumferentially distributed drainage grooves on the support plate help to drain water evenly, improve the efficiency of water flow through the filter cartridge, and further enhance the overall filtration performance of the water purifier. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a side view of the structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the housing of this utility model;
[0019] Figure 4 for Figure 2 A magnified view of part A in the diagram;
[0020] Figure 5 for Figure 3 A magnified view of part B in the diagram.
[0021] In the diagram: 1. Housing; 2. Mounting cover; 3. Inlet; 4. Filter element; 5. First spring; 6. Snap-fit block; 7. Push plate; 8. Internal thread; 9. External thread; 10. Groove; 11. Protrusion; 12. Support plate; 13. Drainage groove; 14. Sealing ring; 15. Fixing ring; 16. Second spring; 17. Positioning sleeve; 18. Outlet; 41. Placement groove. Detailed Implementation
[0022] 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.
[0023] Please see Figure 1-5A water purifier with quick filter replacement includes a housing 1, a mounting cover 2 at the top of the housing 1, a placement groove 41 inside the housing 1, a filter element 4 inside the placement groove 41, a snap-fit block 6 inside the placement groove 41, and a limiting component at the top of the placement groove 41. The limiting component limits the top of the filter element 4 through the snap-fit block 6. A support plate 12 is provided at the bottom of the placement groove 41, and a support component is provided at the bottom end of the placement groove 41. The support component supports the bottom end of the filter element 4 through the support plate 12. The limiting component also includes a first spring 5 and a push plate 7. The push plate 7 is fixedly connected to the side wall of the snap-fit block 6, and the first spring 5 is fixedly connected between the side wall of the push plate 7 and the inner wall of the housing 1. The bottom of the snap-fit block 6 contacts the top of the filter element 4. When the filter element 4 needs to be replaced, the external thread 9 on the outer wall of the top of the mounting cover 2 first engages with the inner thread 9 on the top of the placement groove 41. The internal thread 8 of the wall matches the feature of the installation cover 2 being removed from the housing 1. Then, the push plate 7 is moved, which drives the snap-fit block 6 to move to one side, causing the snap-fit block 6 to disengage from the top of the filter element 4. During this process, the first spring 5 is compressed. Compared with the existing technology, this water purifier, through the design of the limiting component and the support component, allows ordinary users to easily replace the filter element without the need for multiple tools. This greatly saves time and effort and avoids the money spent on professional on-site operation due to the cumbersome replacement operation. Because the filter element can be replaced quickly, the risk of decreased filtration effect due to the filter element not being replaced for a long time is reduced, effectively protecting water quality and avoiding the threat of impurities and bacteria in the water to the health of family members. At the same time, it also increases the user's enthusiasm for replacing the filter element and ensures the continuous good performance of the water purifier.
[0024] The support assembly also includes a fixing ring 15, a second spring 16, and a sealing ring 14. The fixing ring 15 is fixedly connected to the inner wall of the placement groove 41, the support plate 12 is slidably connected to the inner wall of the placement groove 41, the sealing ring 14 is fixedly connected to the top of the support plate 12, and the second spring 16 is fixedly connected between the top of the fixing ring 15 and the bottom of the support plate 12. When the push plate 7 is moved, the push plate 7 drives the snap-fit block 6 to move to one side, so that the snap-fit block 6 is disengaged from the top of the filter element 4. During this process, the first spring 5 is compressed. At this time, the second spring 16 on the fixing ring 15 is reset, pushing the support plate 12 to move upward along the placement groove 41, thereby lifting the filter element 4 and moving it upward along the placement groove 41 to facilitate the removal of the old filter element.
[0025] The support plate 12 has several drainage grooves 13 arranged in a circular pattern. When the filter element 4 is working, water enters from the inlet 3, is filtered by the filter element 4, and is discharged from the drainage grooves 13 arranged in a circular pattern on the support plate 12.
[0026] A positioning sleeve 17 is fixedly connected to the top center of the support plate 12. When installing a new filter element 4, it is placed in the placement groove 41, and the bottom of the filter element 4 is placed on the positioning sleeve 17. The positioning sleeve 17 provides precise positioning for the installation of the filter element 4, ensuring that the filter element 4 is installed in the correct position, guaranteeing the stability of the filter element after installation, and helping to improve the filtration effect and service life.
[0027] The support plate 12 has two sets of protrusions 11 fixedly connected to its side wall. The inner wall of the placement groove 41 has a groove 10. The protrusions 11 are slidably connected to the inner wall of the groove 10. The bottom end of the placement groove 41 has a water outlet 18. During the up-and-down movement of the support plate 12 under the action of the second spring 16, the protrusions 11 slide along the groove 10 and play a guiding role. After the filtered water is discharged from the drain trough 13, it passes through the second spring 16 and the fixing ring 15 and finally flows out from the water outlet 18.
[0028] The mounting cover 2 has a water inlet 3, and the outer wall of the top of the mounting cover 2 has an external thread 9. The inner wall of the top of the placement groove 41 has an internal thread 8, and the internal thread 8 matches the external thread 9. The design of the internal thread 8 and the external thread 9 makes the disassembly and installation of the mounting cover 2 simple and convenient, and makes it easy for users to replace the filter element 4. At the same time, the setting of the water inlet 3 clearly defines the water inflow path and ensures the water supply when the water purifier is working normally.
[0029] Structural Description: Shell 1: Serves as the external main frame of the water purifier, protecting the internal components. It provides the mounting base for other parts, ensuring that each component is assembled in an orderly manner within it to form a complete water purifier device.
[0030] Mounting cover 2: Located at the top of the housing 1, it seals the interior of the water purifier by cooperating with the placement slot 41. Its main function is to facilitate users in opening and closing the water purifier, thereby enabling operations such as replacing the filter cartridge 4.
[0031] Inlet 3: Located on the mounting cover 2, this is the entrance for external water to enter the water purifier. It clearly defines the initial water flow channel, ensuring that raw water can smoothly flow into the water purifier for subsequent filtration.
[0032] Filter cartridge 4: The core filtration component of the water purifier, placed in the placement tank 41. It is responsible for filtering the incoming raw water, removing impurities, bacteria and other harmful substances from the water, so that the treated water meets drinking or other usage standards.
[0033] The first spring 5, connected between the push plate 7 and the inner wall of the housing 1, is a key elastic component of the limiting assembly. Utilizing its elasticity, under the action of the push plate 7, it pushes and resets the locking block 6, thereby controlling the limiting and releasing operations on the top of the filter element 4.
[0034] The locking block 6 is located in the placement slot 41 and is connected to the push plate 7. Under the action of the first spring 5, it limits the top of the filter element 4. When the filter element needs to be replaced, it can release the limit to facilitate the removal of the filter element; when the filter element is installed, it can lock the top of the filter element to ensure that the filter element is installed firmly.
[0035] Push plate 7: Fixed to the side wall of locking block 6, the user moves the locking block 6 by pushing the push plate 7, thereby controlling the top limit of the filter element 4. It provides a convenient point of leverage for user operation.
[0036] Internal thread 8: Located on the inner wall of the top of the placement groove 41, matching the external thread 9 on the outer wall of the top of the mounting cover 2. This threaded connection allows for a detachable connection between the mounting cover 2 and the housing 1, facilitating easy opening and closing of the water purifier for filter replacement.
[0037] External thread 9: Located on the outer wall of the top of the mounting cover 2, it mates with the internal thread 8. It provides a simple and effective connection method for installing and removing the mounting cover 2.
[0038] Groove 10: Formed on the inner wall of the placement groove 41, it engages with the protrusion 11 on the side wall of the support plate 12. During the up-and-down movement of the support plate 12 under the action of the second spring 16, the groove 10 provides a sliding track for the protrusion 11, playing a guiding role and ensuring the stability and straightness of the movement of the support plate 12.
[0039] Protrusion 11: Fixedly connected to the side wall of the support plate 12 and engaged with the groove 10. During the movement of the support plate 12, the protrusion 11 slides along the groove 10 to prevent the support plate 12 from shifting when moving up and down, ensuring that it can accurately lift and place the filter element 4.
[0040] Support plate 12: Placed at the bottom of placement groove 41, it can slide on its inner wall. Its main function is to lift and support filter element 4 under the push of the second spring 16. At the same time, the sealing ring 14 on its top ensures the seal at the contact point with filter element 4 to prevent water leakage.
[0041] Drainage channel 13: It is located on the support plate 12 and is distributed in a circular pattern. When the filter element 4 is working, the filtered water is discharged from the drainage channel 13. This design allows the water to flow out of the support plate 12 evenly and quickly, improving the efficiency of water flow through the filter element and helping to improve the overall filtration performance of the water purifier.
[0042] Sealing ring 14: Fixed to the top of the support plate 12 and in contact with the bottom of the filter element 4. Its function is to ensure the seal between the support plate 12 and the filter element 4, prevent filtered water from leaking from the contact point between the two, and ensure that water can only be discharged through the drain trough 13, thus ensuring the normal operation of the water purifier.
[0043] Fixed ring 15: Fixedly connected to the inner wall of the placement groove 41, providing a fixed support point for the second spring 16. At the same time, together with the support plate 12 and the second spring 16, it forms a support assembly, playing an important supporting and resetting role during filter element replacement and operation.
[0044] The second spring 16, connected between the fixing ring 15 and the support plate 12, is a key elastic component of the support assembly. When replacing the filter element, its restoring elasticity pushes the support plate 12 upward, lifting the filter element 4 for easy removal. When installing the filter element, the second spring 16 is compressed during the placement of the filter element 4, providing cushioning and support.
[0045] Positioning sleeve 17: It is fixedly connected to the center of the top of the support plate 12. When installing the filter element 4, it provides precise positioning for the filter element 4, ensuring that the filter element 4 is installed in the correct position, guaranteeing the stability of the filter element after installation, and helping to improve the filtration effect and service life.
[0046] Outlet 18: Located at the bottom of the placement tank 41, it is the channel through which water filtered by filter element 4 flows out of the water purifier. This clearly defines the outflow path of the purified water, ensuring that the treated water can be smoothly discharged for user use.
[0047] Placement slot 41: It is opened inside the housing 1 and is used to place the filter element 4. It is equipped with components such as snap-fit block 6 and support plate 12 to provide installation space for these components. At the same time, it cooperates with the installation cover 2 to seal the internal space of the water purifier and ensure the normal operation of the water purifier during operation and filter element replacement.
[0048] Instructions for use
[0049] When filter element 4 needs to be replaced, firstly, taking advantage of the matching feature between the external thread 9 on the outer wall of the top of the mounting cover 2 and the internal thread 8 on the inner wall of the top of the placement groove 41, the mounting cover 2 is removed from the housing 1. Then, the push plate 7 is moved, causing the locking block 6 to move to one side, disengaging the locking block 6 from the top of the filter element 4. During this process, the first spring 5 is compressed. At this time, the second spring 16 on the fixing ring 15 returns to its original position, pushing the support plate 12 upward along the placement groove 41, thereby lifting the filter element 4 and allowing it to move upward along the placement groove 41, making it easy to remove the old filter element and install the new one. When filter element 4 is in operation, it is placed in the placement groove 41, with the bottom of filter element 4 placed on the positioning sleeve 17 and simultaneously on the support plate 12. At this time, the second spring 16 is compressed. Then, by using the reset of the first spring 5, the snap-fit block 6 is snapped into the top of filter element 4, thus completing the fixing of the filter element. Finally, the mounting cover 2 is rotated and installed on the housing 1 through the internal thread 8 and the external thread 9. When filter element 4 is working, water enters from the inlet 3, is filtered by filter element 4, and is discharged from the drainage groove 13 distributed in a circle on the support plate 12. It passes through the second spring 16 and the fixing ring 15 and finally flows out from the outlet 18.
[0050] 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 core quick replacement water purifier, comprising a shell (1), the top end of the shell (1) is provided with a mounting cover (2), a placing groove (41) is opened in the inside of the shell (1), and a filter core (4) is arranged in the inside of the placing groove (41), characterized in that, Also includes: The placing groove (41) is internally provided with a clamping block (6), the top end of the placing groove (41) is provided with a limiting assembly, the clamping block (6) limits the top of the filter core (4), the bottom of the placing groove (41) is provided with a supporting disc (12), the bottom end of the placing groove (41) is provided with a supporting assembly, the supporting assembly supports the bottom end of the filter core (4) through the supporting disc (12).
2. The filter cartridge quick-change water purifier according to claim 1, characterized in that: The limiting assembly further comprises a first spring (5) and a push plate (7), the push plate (7) is fixedly connected to the side wall of the clamping block (6), and the first spring (5) is fixedly connected between the side wall of the push plate (7) and the inner wall of the shell (1). The bottom of the clamping block (6) is in contact with the top of the filter core (4).
3. The filter cartridge quick-change water purifier according to claim 1, characterized in that: The supporting assembly further comprises a fixing ring (15), a second spring (16) and a sealing ring (14), the fixing ring (15) is fixedly connected to the inner wall of the placing groove (41), the supporting disc (12) is slidingly connected to the inner wall of the placing groove (41), the sealing ring (14) is fixedly connected to the top of the supporting disc (12), and the second spring (16) is fixedly connected between the top of the fixing ring (15) and the bottom of the supporting disc (12).
4. The quick-change filter cartridge water purifier according to claim 3, characterized in that: A plurality of drainage grooves (13) are arranged on the supporting disc (12) and are circumferentially distributed.
5. The quick-change filter cartridge water purifier according to claim 4, characterized in that: The top center of the supporting disc (12) is fixedly connected with a positioning sleeve (17).
6. The quick-change filter cartridge water purifier according to claim 5, characterized in that: The side wall of the supporting disc (12) is fixedly connected with two groups of protrusions (11), the inner wall of the placing groove (41) is provided with grooves (10), the protrusions (11) are slidingly connected to the inner wall of the grooves (10), and the bottom end of the placing groove (41) is provided with a water outlet (18).
7. The quick-change filter cartridge water purifier according to claim 1, characterized in that: The mounting cover (2) is provided with a water inlet (3), the top end of the mounting cover (2) is provided with an external thread (9), the top end of the placing groove (41) is provided with an internal thread (8), and the internal thread (8) is matched with the external thread (9).
Citation Information
Patent Citations
Pipeline type water purifier
CN222286638U