Filter element locking assembly and water purifier

Abstract

The invention discloses a filter element locking assembly and a water purifier, the filter element locking assembly comprises a filter element, a waterway plate assembly and a mounting seat, the filter element comprises a filter element shell and a central pipe arranged in the filter element shell, and a first filter piece is arranged in the central pipe; a water guide opening and a containing groove are formed in a water path plate of the water path plate assembly, the connecting part at the bottom of the filter element shell is connected with the containing groove in an inserted mode in the assembling state, and a water passing opening of the filter element is communicated with the water guide opening; a locking piece is arranged on the waterway plate and is used for locking or unlocking the connecting part under the action of external force; the waterway plate is mounted on the mounting seat in a swinging manner; and the mounting seat is used for acting on the locking piece to drive the locking piece to lock the connecting part or unlock the connecting part when the waterway plate rotates. The filter element can be locked and unlocked by swinging the filter element, so that the filter element can be quickly replaced; the carbon layer is arranged in the central tube in the filter element, so that the carbon layer can be additionally arranged by fully utilizing the space of the central tube, and a stronger filtering effect is realized.

Description

Technical Field

[0001] This invention relates to the field of water purifier technology, and more particularly to a filter cartridge locking assembly and a water purifier. Background Technology

[0002] In water purification equipment, filter cartridges have a certain service life. After a period of use, the purification capacity of the filter cartridge will decrease, and the filter cartridge needs to be replaced frequently. Especially when the filter media inside the filter cartridge is not arranged properly, the filtration effect of the filter cartridge will be poor, and the filter cartridge needs to be replaced more frequently. Therefore, the installation and replacement of filter cartridges are very critical steps.

[0003] Traditional filter cartridge installation methods mostly rely on manual operation, which not only requires users to have a certain level of dexterity but is also prone to causing the filter cartridge to malfunction or leak due to improper installation. While some filter cartridge locking devices exist in existing technology, most are complex in structure and cumbersome to operate, failing to meet users' needs for ease of use and reliability. Summary of the Invention

[0004] In order to overcome at least one of the defects of the prior art, one of the objectives of the present invention is to provide a filter element locking assembly that enables filter element installation and replacement through simple operation, and the filter element will not fall off due to external force during use, and the locking is reliable; at the same time, the filter element has a strong filtration effect.

[0005] The second objective of this invention is to provide a water purifier that allows for easy installation and replacement of the filter element through simple operation, and the filter element will not fall off due to external force during use, ensuring reliable locking; at the same time, the filter element has a strong filtration effect.

[0006] One of the technical solutions adopted by this invention to solve its problem is:

[0007] A filter cartridge locking assembly, comprising,

[0008] A filter element includes a filter element housing and a central tube disposed within the filter element housing. The bottom of the filter element housing is provided with a connecting part and a water inlet. The water inlet communicates with the central tube. A first filter element is disposed inside the central tube.

[0009] A water circuit board assembly includes a water circuit board, which has a water inlet and a receiving groove. In the assembled state, the connecting part is inserted into the receiving groove, and the water outlet is connected to the water inlet. The water circuit board is provided with a locking member, which is used to lock or unlock the connecting part under the action of external force.

[0010] Mounting base, on which the water circuit board is swayably mounted; the mounting base is used to act on the locking member when the water circuit board rotates to drive the locking member to lock or unlock the connecting part.

[0011] Furthermore, the mounting base is provided with a pressing part, and one end of the locking member extends outward relative to the water circuit plate with a pushing part; the pushing part is used to be pressed by the pressing part when the water circuit plate swings near the pressing part, and to drive the locking member to move laterally relative to the water circuit plate;

[0012] The locking member and the water channel plate are elastically connected by an elastic member, which is arranged along the lateral movement direction of the locking member. The locking member is used to compress the elastic member and lock the connection when it is pressed by the top pressure part. The elastic member is used to provide an elastic force to drive the locking member to move laterally relative to the water channel plate after the locking member moves away from the top pressure part, so as to switch the locked state and the unlocked state.

[0013] Furthermore, at least two limiting members are provided on both opposite sides of the connecting part, and the at least two limiting members are spaced apart along the lateral movement direction of the locking member;

[0014] The locking member includes a locking plate, and the pushing part is disposed at one end of the locking plate in the lateral moving direction; the locking plate has an annular structure and surrounds the receiving groove; the annular inner wall of the locking plate is concave and convex towards the receiving groove so that the concave part forms an unlocking channel and the convex part forms a locking part, the number of unlocking channels and the number of locking parts are equal to the number of limiting members and their positions correspond one-to-one, and the unlocking channel is adapted to the corresponding limiting member;

[0015] The locking plate moves laterally back and forth relative to the water channel plate to move the locking part or the unlocking channel above the corresponding limiting member, thereby locking or unlocking the connecting part.

[0016] Furthermore, the pushing part is provided with a guide groove extending in the lateral movement direction, the mounting base is provided with a vertically arranged guide pin, the guide pin is inserted into the guide groove, and the guide groove can move laterally relative to the guide pin.

[0017] Furthermore, a filter element seat is installed above the locking plate. The filter element seat has a guide groove adapted to the connecting part. The groove wall of the guide groove is concave and convex towards the connecting part so that the concave part forms a guide channel adapted to the limiting member. Two adjacent convex parts of the guide channel form a guide part. The number of guide channels is equal to the number of limiting members and their positions correspond one-to-one.

[0018] Furthermore, the mounting base includes a base and a support wall, and the water channel plate is rotatably connected to the base via a rotating shaft; the support wall and the base form a mounting cavity, the mounting cavity having a mounting opening, and the filter element is installed into the mounting cavity through the mounting opening;

[0019] The support wall is provided with a first locking part; the upper end of the filter element housing is provided with a second locking part; the first locking part is used to lock and connect with the second locking part when the locking member locks the connecting part.

[0020] Furthermore, the upper end of the filter housing is provided with a handle, and the second locking part is located on the handle.

[0021] Furthermore, the filter cartridge housing is provided with a first filter section and a second filter section, the first filter section and the second filter section are connected through a second water inlet channel, the central tube is located in the middle of the second filter section, and the side wall of the central tube is provided with filter through holes;

[0022] The water inlet includes an inlet, a first outlet, and a second outlet. The inlet is connected to the first filter section through a first inlet channel. A second filter element is provided in the first filter section. The first outlet is connected to the outlet end of the central pipe. A third filter element is provided in the second filter section and is arranged around the central pipe. The second outlet is connected to the second filter section.

[0023] Furthermore, a one-way valve is provided in the second water inlet channel; the first filter element includes a first carbon layer; the second filter element includes a PP cotton layer and a second carbon layer arranged along the water flow direction; the third filter element includes an RO membrane layer arranged along the water flow direction.

[0024] The second technical solution adopted by the present invention to solve its problem is:

[0025] A water purifier includes a filter cartridge locking assembly as described above.

[0026] In summary, the filter cartridge locking assembly and water purifier provided by this invention have the following technical effects:

[0027] 1) The first filter element is built into the central tube, which can reduce the extra space occupied by the carbon layer in the filter element housing, making the overall structure of the filter element more compact; and because the carbon layer is combined with the central tube, the central tube can be made larger, and more filter media can be placed in the central tube, so that the total amount of carbon layer can be increased without increasing the external size of the filter element, thereby achieving a stronger filtration effect.

[0028] 2) The locking mechanism can be switched between locked and unlocked states by swinging the water circuit board and the force of the mounting base during the swing. When the locking mechanism is locked, it can prevent the water circuit board and the filter element from loosening, thereby preventing water leakage. When the locking mechanism is unlocked, the filter element can be replaced.

[0029] 3) Since the filter element and the water circuit board limit each other in the swing direction, the filter element can be swung to make the water circuit board assembly and locking parts swing relative to the mounting base, thereby switching the locking and unlocking states of the locking parts, and achieving quick filter replacement through simple operation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram showing the disassembled structure of the filter element locking assembly according to an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the filter element according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the assembly structure of the filter element holder and water circuit board assembly according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the disassembled structure of the filter element holder and water circuit board assembly according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the overall structure of the water circuit board assembly according to an embodiment of the present invention;

[0035] Figure 6 for Figure 1 The enlarged view of part A shown below;

[0036] Figure 7 This is a schematic diagram of the structure of the locking element when unlocking the filter element according to an embodiment of the present invention;

[0037] Figure 8 This is a longitudinal cross-sectional view of the locking mechanism when unlocking the filter element according to an embodiment of the present invention.

[0038] Figure 9 This is a schematic diagram of the structure of the locking element locking the filter element according to an embodiment of the present invention;

[0039] Figure 10 This is a longitudinal cross-sectional view of the locking mechanism when locking the filter element according to an embodiment of the present invention.

[0040] Figure 11 This is a schematic diagram of a locking structure for the mounting base and filter element according to an embodiment of the present invention;

[0041] Figure 12 This is a schematic diagram of another locking structure for the mounting base and filter element according to an embodiment of the present invention;

[0042] Figure 13 for Figure 12 A partial structural diagram of the filter element is shown;

[0043] Figure 14 for Figure 5 A structural schematic diagram of the water channel board assembly from another perspective;

[0044] Figure 15 This is a schematic diagram of the overall structure of the water purifier according to an embodiment of the present invention.

[0045] The meanings of the reference numerals in the attached figures are as follows:

[0046] 1. Filter element; 11. Filter element housing; 111. Central tube; 112. First filter element; 113. Second water inlet channel; 114. First water inlet channel; 115. One-way valve; 116. PP cotton layer; 117. Second carbon layer; 118. RO membrane layer; 12. Connecting part; 121. Limiting part; 122. Water inlet; 123. First water outlet; 124. Second water outlet; 13. Second locking part; 131. Third abutment surface; 14. Handle; 15. Limiting block; 2. Water circuit board assembly; 21. Water circuit board; 22. Receiving tank; 23. Water guide; 232. First water guide; 233. Second water guide; 234. Third water inlet; 24. Rotating shaft; 241. First water guide pipe; 242. Second water guide pipe; 3. Locking element; 31. Elastic element; 32. Unlocking channel; 33. Locking part; 34. Pushing part; 35. Guide groove; 4. Mounting base; 41. Base; 42. Support wall; 43. Mounting cavity; 44. First locking part; 441. Guide surface; 442. First abutting surface; 443. Second abutting surface; 45. Top pressing part; 451. Guide slope; 46. Guide pin; 47. Mounting groove; 48. Front panel; 5. Filter cartridge holder; 51. Guide channel; 52. Guide part; 53. Limiting groove; 6. Water purifier. Detailed Implementation

[0047] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0048] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0050] Example 1

[0051] See Figure 1 This invention discloses a filter element locking assembly, which includes a filter element 1, a water circuit board assembly 2, and a mounting base 4; for details, please refer to... Figure 2 The filter element 1 includes a filter element housing 11 and a central tube 111 disposed inside the filter element housing 11. The bottom of the filter element housing 11 is provided with a connecting part 12 and a water inlet, which is connected to the central tube 111. The central tube 111 is provided with a first filter element 112.

[0052] See Figure 4 and Figure 5 The water circuit board assembly 2 includes a water circuit board 21, which has a water inlet 23 and a receiving groove 22. In the assembled state, the connecting part 12 is inserted into the receiving groove 22, and the water outlet is connected to the water inlet 23. The water circuit board 21 is provided with a locking member 3, which is used to lock or unlock the connecting part 12 under the action of external force.

[0053] Furthermore, the water circuit board 21 is oscillatingly mounted on the mounting base 4, and the mounting base 4 is used to act on the locking member 3 when the water circuit board 21 rotates to drive the locking member 3 to lock or unlock the connecting part 12.

[0054] Based on this structure, when using the filter element locking assembly of the present invention, the connecting part 12 at the bottom of the filter element 1 can be inserted into the receiving groove 22 on the water circuit plate 21 in the unlocked state of the locking member 3. Then, the water circuit plate 21 is swung so that the mounting seat 4 acts on the locking member 3. After being subjected to the external force of the mounting seat 4, the locking member 3 moves to the locking position and locks the connecting part 12, thereby realizing the locking connection between the filter element 1 and the water circuit plate 21.

[0055] When the filter element 1 needs to be replaced, the water circuit plate 21 can be swung so that the locking part 3 is moved to the unlock position by the external force of the mounting base 4 or other external forces, thereby unlocking the connection part 12; at this time, the old filter element 1 can be pulled out from the receiving groove 22, and the new filter element 1 can be installed in. Then, the above locking action can be repeated to lock the filter element 1.

[0056] When the water circuit plate 21 swings to the tilted position, the locking element 3 is in the unlocked state, and the filter element 1 can be tilted and inserted into the receiving groove 22; when the water circuit plate 21 swings to the horizontal position, the locking element 3 is in the locked state, and the filter element 1 is placed vertically for use.

[0057] When filter element 1 is inserted into water circuit board 21, water circuit communication is established between filter element 1 and water circuit board 21. Therefore, when water purifier 6 is working, the water purifier 6 body introduces raw water into filter element 1 for filtration through the water circuit of water circuit board assembly 2, and the purified water produced after filtration by filter element 1 is discharged from water purifier 6 body through other water circuits of water circuit board assembly 2 for user use. Specifically, the water inlet at the bottom of filter element housing 11 includes inlet 122 and first outlet 123. Raw water is introduced into filter element 1 through a guide port 23 on water circuit board assembly 2 and inlet 122 at the bottom of filter element housing 11 for multi-stage filtration. The first filter element 112 is built into the central tube 111 and forms the final stage of filtration. The first filter element 112 cooperates with the preceding multi-stage filtration layers to filter the raw water and produce purified water, which is then guided to the first outlet 123 through the outlet end of the central tube 111.

[0058] Specifically, the first filter element 112 is a carbon layer, which can be granular carbon or compressed carbon. It can remove impurities such as chlorine, odor, and organic matter from the water, ensuring that the output water is purer and improving the water quality. As the last stage of filtration, the carbon layer can remove the pure water taste after RO membrane filtration through adsorption, increase the oxygen content of the water, and make the water taste sweeter and more palatable. At the same time, it can reduce the corrosion of the equipment's internal parts by impurities and play a role in protecting the equipment.

[0059] It should be noted that the first filter element 112 is built into the central tube 111, which reduces the extra space occupied by the carbon layer within the filter cartridge housing 11, making the overall structure of the filter cartridge 1 more compact. Importantly, because the carbon layer is integrated with the central tube 111, the central tube 111 can be made larger, and more filter media can be placed within it. This allows the total amount of carbon layer in the filter cartridge 1 to increase without increasing its external dimensions, thus achieving a stronger filtration effect. Furthermore, with the carbon layer built into the central tube 111, water flows through multiple layers of carbon, which balances the water flow velocity, ensuring stable water output and preventing excessively fast or slow water flow from affecting the filtration effect.

[0060] Furthermore, since the water in the water passage of the water purifier 6 has a certain water pressure when it is working, when the filter element 1 is directly inserted into the water passage 21, the filter element 1 may pop out under the water pressure, causing the filter element 1 to separate from the water passage 21. However, the water passage assembly 2 of this application locks the filter element 1 in the receiving groove 22 by locking member 3. Therefore, during the operation of the water purifier 6, the water pressure in the water passage of the water passage 21 will not drive the filter element 1 away from the water passage 21, ensuring the continuity of the water passage between the water passage 21 and the filter element 1; and the filter element 1 is not easy to loosen with the water passage 21, which can prevent water leakage.

[0061] It is worth noting that in this application, the locking or unlocking of the locking member 3 and the filter element 1 is achieved by the swinging of the water channel plate 21. Specifically, since the water channel plate 21 can swing relative to the mounting base 4, actuating parts can be provided on both sides of the mounting base 4 along the swinging direction of the water channel plate 21. When the water channel plate 21 drives the locking member 3 to swing to one side of the mounting base 4 and is in a horizontal position, the locking member 3 is subjected to the external force of the actuating part of the mounting base 4 on that side, thereby moving to the locked position; when the water channel plate 21 drives the locking member 3 to swing to the other side of the mounting base 4 and is in an inclined position, the locking member 3 is subjected to the external force of the actuating part of the mounting base 4 on that side, thereby moving to the unlocked position. In this way, by swinging the water channel plate 21, the locking member 3 is subjected to the force of the mounting base 4 on different sides in the horizontal and inclined positions, thereby locking or unlocking the connecting part 12.

[0062] Even more convenient to operate is that the locking element 3 is locked and unlocked by manually swinging the filter element 1. Since the receiving groove 22 of the water circuit plate 21 is adapted to the connecting part 12 of the filter element 1, when the connecting part 12 is inserted into the receiving groove 22, the filter element 1 and the water circuit plate 21 are mutually limited in the swing direction. Therefore, by swinging the filter element 1, the filter element 1 can drive the water circuit plate assembly 2 and the locking element 3 to swing relative to the mounting base 4. During the swing, the locking element 3 is switched between locked and unlocked states by the force of the mounting base 4.

[0063] Specifically, with the rotation axis of the rotating shaft 24 as the center, the portion of the water channel plate 21 located on one side of the rotation axis is the first side, and the portion of the water channel plate 21 located on the other side of the rotation axis is the second side. In the inclined position, the height of the first side of the water channel plate 21 is less than the height of the second side. When the filter element 1 needs to be locked in the assembled state, the filter element 1 is swung to press down on the second side of the water channel plate 21. The water channel plate 21 then causes the locking plate to swing to a horizontal position to achieve locking, at which point the filter element 1 is in a vertical position. Similarly, when the filter element 1 needs to be unlocked, the filter element 1 is swung to press down on the first side of the water channel plate 21. The water channel plate 21 then causes the locking plate to swing to an inclined position to achieve unlocking, at which point the filter element 1 is also in an inclined position.

[0064] Therefore, the filter element 1 can be manually swung to a vertical or tilted position, flexibly switching the locked and unlocked states of the locking element 3. The structure is simple, the operation is convenient, and the filter element can be quickly replaced.

[0065] Furthermore, the mounting base 4 is provided with a pressing part 45, and one end of the locking member 3 extends outward relative to the water channel plate 21 with a pushing part 34; wherein, the pushing part 34 is used to be pressed by the pressing part 45 when the water channel plate 21 swings near the pressing part 45, and to drive the locking member 3 to move laterally relative to the water channel plate 21. See reference Figure 4 and Figure 5The locking member 3 and the water channel plate 21 are elastically connected by an elastic member 31, which is arranged along the lateral movement direction of the locking member 3. The locking member 3 is used to compress the elastic member 31 and lock the connection part 12 when it is pressed by the top pressure part 45. Conversely, the elastic member 31 is used to provide an elastic force to drive the locking member 3 to move laterally relative to the water channel plate 21 after the locking member 3 moves away from the top pressure part 45, so as to switch the locked state and the unlocked state.

[0066] Based on this structure, along the swing direction of the water channel plate 21, the mounting base 4 is provided with an action part on only one side. This action part is a pressing part 45, which can apply a pressing action towards the locking member 3. When the filter element 1 is locked in the assembled state, the filter element 1 can be swinged so that the filter element 1 swings from the inclined position to the vertical position. During this process, the water channel plate 21 rotates from the inclined position to the horizontal position, and the water channel plate 21 drives the pushing part 34 to approach the pressing part 45. During the approach process, the pushing part 34 is pressed by the pressing part 45 and compresses the elastic member 31 and gradually approaches the connecting part 12, thereby switching to the locked state to lock the connecting part 12 in the receiving groove 22.

[0067] When the filter element needs to be replaced, the filter element 1 can be swung from a vertical position to an inclined position. During this process, the water circuit plate 21 rotates from a horizontal position to an inclined position, and the locking member 3 moves away from the top pressure part 45. During this movement, the pushing part 34 is pushed away from the connecting part 12 by the elastic force of the elastic member 31, and the locking member 3 switches to the unlocked state. Then the old filter element 1 can be pulled out, and the connecting part 12 of the new filter element 1 can be inserted into the receiving groove 22.

[0068] The elastic element 31 is a spring or a silicone pad, etc., and its two ends abut against the locking element 3 and the water channel plate 21 respectively. The locking element 3 moves laterally relative to the water channel plate 21 when it is pressed by the top pressure part 45 and when it is popped out by the elastic element 31. As the filter element 1 swings back and forth, the locking element 3 moves laterally back and forth relative to the water channel plate 21, thereby repeatedly switching between the locked and unlocked states.

[0069] Thus, by manually swinging the filter element 1 to move the locking part 3 closer to and away from the top pressure part 45, the locking and unlocking states of the filter element 1 are switched, and the replacement of the filter element 1 can be completed in a short time; the operation process is simplified, and the secure installation of the filter element 1 and the sealing of the water system are ensured.

[0070] Furthermore, the pressing part 45 is a pressing block or a pressing column, and the pressing part 45 is provided with a guide slope 451 that slopes downward toward the pushing part 34; when the water channel plate 21 drives the pushing part 34 to rotate, the pushing part 34 can slide downward along the guide slope 451 and move laterally toward the water channel plate 21, thereby approaching and locking the connecting part 12. That is, the pressing part 45, through the guide slope 451, can ensure the stability of the pushing part 34 during operation, ensuring that the pushing part 34 is smoothly acted upon by the pressing part 45 and moves relative to the water channel plate 21.

[0071] Furthermore, at least two limiting members 121 are protruding outward on both opposite sides of the connecting portion 12, and the at least two limiting members 121 are spaced apart along the lateral movement direction of the locking member 3. The locking member 3 specifically includes a locking plate, and a pushing portion 34 is disposed at one end of the locking plate along the lateral movement direction; specifically, the locking plate has an annular structure and surrounds the receiving groove 22; wherein, the annular inner wall of the locking plate is concave and convex toward the receiving groove 22 so that the concave portion forms an unlocking channel 32 and the convex portion forms a locking portion 33, the number of unlocking channels 32 and the number of locking portions 33 are equal to the number of the limiting members 121 and their positions correspond one-to-one, and the unlocking channel 32 is adapted to the corresponding limiting member 121.

[0072] See Figure 8 and Figure 10 The locking plate moves laterally back and forth relative to the water channel plate 21 to move the locking part 33 or the unlocking channel 32 above the corresponding limiting member 121, thereby locking or unlocking the connecting part 12.

[0073] Based on this structure, see Figure 7 and Figure 8 In the assembled state and with the locking plate in the unlocked state, the unlocking channel 32 on the locking plate is positioned opposite to the limiting member 121 on the filter element 1, and the unlocking channel 32 is located above the limiting member 121. The limiting member 121 can pass through the unlocking channel 32, thereby separating the filter element 1 from the water circuit plate 21. When locking the filter element 1 in the assembled state, the filter element 1 can be swung from an inclined position to a vertical position, and the water circuit plate 21 and the locking plate will swing synchronously to a horizontal position. When the pushing part 34 of the locking plate and the pressing part 45 on the mounting base 4 press against each other, refer to... Figure 9 and Figure 10 The locking plate moves laterally relative to the water channel plate 21, so that the locking part 33 moves above the corresponding limiting member 121, thereby restricting the removal of the filter element 1.

[0074] Therefore, when installing or removing the filter element 1, simply swinging the filter element 1 back and forth in the assembled state can change the relative positional relationship between the limiting member 121, the locking part 33, and the unlocking channel 32, and automatically lock or unlock the filter element 1 by means of the positional change of the locking part 33 and the unlocking channel 32.

[0075] The limiting member 121 can be a limiting rib or a snap-fit ​​block. There is a gap between the limiting member 121 and the top of the connecting part 12, so that the locking plate can be located between the limiting member 121 and the top of the connecting part 12 in the assembled state, thereby allowing the locking part 33 or the unlocking channel 32 to be moved above the limiting member 121 during the lateral movement of the locking plate.

[0076] In addition, a slot can be provided on one side of the limiting member 121 and a hook can be protruded on one side of the locking part 33. During assembly, the limiting member 121 is first inserted into the unlocking channel 32, and then the locking plate moves laterally under the pressure of the pressing part 45, so that the hook on the locking part 33 is inserted into the slot on the limiting member 121, thereby achieving locking; when the locking plate moves laterally under the action of the elastic member 31, the hook on the locking part 33 is removed from the slot on the limiting member 121, thereby achieving unlocking.

[0077] Further, see Figure 5 The propulsion unit 34 is provided with a guide groove 35 extending in the lateral movement direction; see reference Figure 6 The mounting base 4 is provided with a vertically arranged guide pin 46, wherein the guide pin 46 is inserted into the guide groove 35, and the guide groove 35 can move laterally relative to the guide pin 46.

[0078] Based on this structure, during the process of the water circuit plate 21 swinging from the inclined position to the horizontal position, the guide groove 35 is inserted into the guide pin 46 from top to bottom; when the locking plate is pressed and moved by the top pressure part 45, the guide groove 35 can move laterally relative to the guide pin 46.

[0079] The guide groove 35 and the guide pin 46 are engaged or disengaged during the swinging of the water circuit plate 21, so that the water circuit plate 21 can be accurately guided and fixed in the correct position during the swinging process, ensuring that the locking plate and the top pressing part 45 correspond in position; and guide the locking plate to move laterally during the movement of the locking plate under the pressure of the top pressing part 45, ensuring the smooth movement of the locking plate.

[0080] Further, see Figure 3 and Figure 4A filter element holder 5 is installed above the locking plate, and the filter element holder 5 has a guide groove that adapts to the connecting part 12. Specifically, the groove wall of the guide groove is concave and convex towards the connecting part 12 so that the concave part forms a guide channel 51 that adapts to the limiting member 121, and two adjacent convex parts of the guide channel 51 form a guide part 52. The number of guide channels 51 is equal to the number of limiting members 121 and their positions correspond one-to-one.

[0081] Based on this structure, see Figure 8 When the locking plate is in the unlocked state, the unlocking channel 32 on the locking plate is positioned opposite to the guide channel 51 on the filter element seat 5. During filter element 1 installation, the connecting part 12 at the bottom of the filter element 1 is first inserted into the guide groove and then into the receiving groove 22. The limiting member 121 on the connecting part 12 is guided into the unlocking channel 32 via the guide channel 51. When the filter element 1 is locked, the swinging filter element 1 causes the water circuit plate 21 to rotate to a horizontal position. The locking plate is pressed by the top pressure part 45 and moves laterally relative to the filter element seat 5 and the water circuit plate 21. (See reference...) Figure 10 This ensures that the unlocking channel 32 on the locking plate is offset from the guide channel 51 on the filter element seat 5, preventing the connecting part 12 of the filter element 1 from detaching from the receiving groove 22.

[0082] The guide groove ensures that the connecting part 12 can be accurately inserted into the filter element holder 5, the guide channel 51 ensures that the connecting part 12 finds the correct position during insertion, and the guide part 52 provides guiding force to help the connecting part 12 be smoothly inserted and fixed. Furthermore, the design of the guide groove and guide channel 51 ensures that the connecting part 12 will not move or deviate from its position accidentally, improving the stability of the overall structure. During the use of the filter element 1, this stability is crucial for ensuring a good connection between the water circuit board 21 and the filter element 1.

[0083] In addition, the filter element seat 5 includes a bottom wall and a side wall extending upward from the periphery of the bottom wall. The upper end of the side wall is provided with an upward-facing limiting groove 53. The side wall of the filter element 1 is provided with a limiting block 15 corresponding to the height of the limiting groove 53. When the bottom end of the filter element 1 is inserted into the filter element seat 5 from top to bottom, the limiting block 15 on the filter element 1 is engaged into the limiting groove 53 from top to bottom. Through the limiting setting of the limiting block 15 and the limiting groove 53, the filter element 1 can drive the water circuit plate to rotate through the filter element seat 5 during the swinging process.

[0084] Furthermore, the mounting base 4 includes a base 41 and a support wall 42, and the support wall 42 and the base 41 enclose a mounting cavity 43. The water channel plate 21 is rotatably connected to the base 41 via a rotating shaft 24; the mounting cavity 43 has an installation opening, and the filter element 1 is installed into the mounting cavity 43 through the installation opening. (See reference...) Figure 11 and Figure 12The support wall 42 is provided with a first locking part 44, and the upper end of the filter element housing 11 is provided with a second locking part 13. The first locking part 44 is used to lock the connection with the second locking part 13 when the locking member 3 locks the connection part 12.

[0085] Based on this structure, when installing the filter element 1, the filter element 1 can be installed into the installation cavity 43 through the installation opening, and connected to the water channel plate 21 on the base 41 through the bottom connecting part 12; swinging the filter element 1 causes the filter element 1, the water channel plate 21, and the locking part 3 to rotate around the rotating shaft 24, and when the filter element 1 rotates to the vertical position, the locking part 3 locks the connecting part 12, and then the second locking part 13 at the upper end of the filter element housing 11 is locked and connected to the first locking part 44 on the support wall 42.

[0086] Since the locking member 3 locks the filter element 1, the locking state and unlocking state of the locking member 3 will switch as the filter element 1 swings. In order to prevent the filter element 1 from swinging and unlocking due to accidental pressure when the water purifier 6 is in use, a locking structure is also provided between the filter element 1 and the mounting base 4 in this embodiment. When the second locking part 13 at the upper end of the filter element housing 11 is locked and connected to the first locking part 44 on the support wall 42, the filter element 1 is locked in the mounting cavity 43 and cannot swing relative to the mounting base 4.

[0087] When the filter element needs to be replaced, first release the locking connection between the second locking part 13 and the first locking part 44, then swing the filter element 1 to unlock the locking action of the locking member 3, and then the old and new filter elements 1 can be replaced. Thus, the filter element 1 is locked to the water circuit plate 21 and the mounting base 4 through a double locking structure, ensuring that the filter element 1 will not loosen or fall off during use.

[0088] In addition, the filter element 1 is used vertically after being locked, which concentrates the force on the bottom of the filter element 1. The locking structure between the water circuit plate 21 and the filter element 1 is installed at the bottom of the filter element 1, which can improve the locking stability between the water circuit plate 21 and the filter element 1. At the same time, the locking structure between the filter element 1 and the mounting base 4 is set at the upper end of the filter element 1, so that both the upper and lower ends of the filter element 1 are limited and locked, which can ensure the structural stability of the entire water purification system.

[0089] Further, see Figure 7 , Figure 9 and Figure 13 The filter housing 11 has a handle 14 at its upper end, and the second locking part 13 is located on the handle 14.

[0090] Based on this structure, the first locking part 44 is provided on opposite sides of the support wall 42, the two ends of the handle 14 are rotatably connected to the upper end of the filter element housing 11, and both ends of the handle 14 are provided with a second locking part 13. For details, please refer to... Figure 1 and Figure 13The first locking part 44 includes an inclined guide surface 441, a horizontally extending first abutment surface 442, and a vertically extending second abutment surface 443; the second locking part 13 includes a locking block, see reference. Figure 7 The locking block has a third abutment surface 131.

[0091] When installing filter element 1, handle 14 is rotated to a vertical position for manual lifting. At this time, the third abutment surface 131 is moved to a horizontal position, and filter element 1 is tilted and placed into the installation cavity 43. In the unlocked state, the third abutment surface 131 abuts against the guide surface 441. Then, release the pull of handle 14. Since the rotation side of the second locking part 13 is restricted by the guide surface 441, handle 14 will not fall flat due to gravity. Then, swing the filter element 1 towards the side of the support wall 42 away from the installation opening. As the filter element 1 swings, the third abutment surface 131 slides on the guide surface 441, and then slides past the first abutment surface 442 to the other side of the first locking part 44. At this time, the rotation side of handle 14 is not restricted by the first locking part 44, so handle 14 will rotate flat under its own weight, and drive the third abutment surface 131 to a vertical position. Thus, the third abutment surface 131 and the second abutment surface 443 of the first locking part 44 are vertically opposite each other and abut against each other, realizing the locking connection between the first locking part 44 and the second locking part 13. In this state, the filter element 1 cannot be swung out of the installation opening, and the locking effect of the locking member 3 on the filter element 1 can be maintained.

[0092] When unlocking is required, the handle can be manually pulled upwards, causing the third abutment surface 131 to rotate to a horizontal position and abut against the first abutment surface 442, thereby unlocking the restriction of the second abutment surface 443. Then, the filter element 1 can be swung outwards from the installation opening. During this process, the third abutment surface 131 slides past the second abutment surface 443 and the guide surface 441, and the locking member 3 at the bottom of the filter element 1 also releases its locking effect on the connecting part 12.

[0093] Therefore, by swinging the filter element 1, both the bottom and top of the filter element 1 can be locked, achieving a linkage lock between the water circuit board and the filter element, as well as between the filter element and the mounting base. In other words, two locking structures can lock simultaneously, saving locking steps, simplifying operation, and ensuring reliable structure. To unlock, first pull the handle 14, then swing the filter element 1. When installing or replacing the filter element 1, users only need to follow the set sequence of actions to complete the locking or unlocking process.

[0094] In other embodiments, see Figure 12 and Figure 13The first connecting part 12 on the mounting base 4 includes a protruding post, and the second connecting part 12 on the handle 14 may also include an arcuate rib, with an opening on one side of the arcuate rib. When the handle 14 is pulled upward and the filter element 1 is tilted and installed into the mounting cavity 43, the opening on one side of the arcuate rib faces downward and into the interior of the mounting cavity 43. At this time, the protruding post can enter the arcuate groove formed by the arcuate rib through the opening, and the protruding post abuts against the rear end of the arcuate rib. After the user releases the handle 14, the filter element 1 is swung backward. The protruding post pushes the handle 14 to rotate and flatten through the abutment action with the arcuate rib. At the same time, the handle 14 drives the opening on one side of the arcuate rib to rotate towards the outside of the mounting cavity 43. At this time, the protruding post abuts against the front end of the arcuate rib, realizing the locking connection between the first locking part 44 and the second locking part 13.

[0095] In this state, the filter element 1 cannot be swung outward from the mounting opening, thus maintaining the locking effect of the locking member 3 on the filter element 1. When unlocking is required, the locking effect of the first locking part 44 and the second locking part 13 is released by pulling the handle 14, at which point the filter element 1 can be swung outward. When the filter element 1 is swung, the protruding post pushes the handle 14 to rotate and flatten by abutting against the arc-shaped rib, thereby achieving the locking effect. The locking member 3 at the bottom of the filter element 1 is pressed by the pressing part 45 on the mounting base 4 to lock the connecting part 12. That is, the two locking structures can lock simultaneously, saving locking steps, simplifying operation, and ensuring reliable structure.

[0096] In addition, see Figure 1 The water circuit board 21 is rotatably connected to the base 41 via a rotating shaft 24. Specifically, the base 41 is provided with a mounting groove 47, and the water circuit board assembly 2 can be rotatably installed in the mounting groove 47; see reference. Figure 14 The rotating shaft 24 includes a first water guide pipe 241 and a second water guide pipe 242. The first water guide pipe 241 is connected to the first water inlet 232, and the second water guide pipe 242 is connected to the second water inlet 233. In other words, this embodiment integrates the water guide pipes on the water circuit board 21 and the rotating shaft 24. The water guide pipes can connect the water path between the body of the water purifier 6 and the filter element 1, and can also serve as the rotating shaft 24 when the water circuit board 21 and the locking member 3 swing. This avoids the need for a separate rotating shaft 24 structure, making the structure of the water circuit board assembly 2 more compact.

[0097] Further, see Figure 2 The filter cartridge housing 11 is provided with a first filter section and a second filter section, and the first filter section and the second filter section are connected through a second water inlet channel 113. The central tube 111 is located in the middle of the second filter section, and the side wall of the central tube 111 is provided with filter through holes.

[0098] Furthermore, the water inlets at the bottom of filter element 1 include an inlet 122, a first outlet 123, and a second outlet 124. Specifically, the inlet 122 is connected to the first filtration chamber section through the first inlet channel 114, the first outlet 123 is connected to the outlet end of the central tube 111, and the second outlet 124 is connected to the second filtration chamber section. The first filtration chamber section contains a second filter element, and the second filtration chamber section contains a third filter element, which surrounds the central tube 111.

[0099] Based on this structure, the water guide 23 on the water circuit board 21 includes a first water guide 232, a second water guide 233 and a third water guide 234. In the assembled state, the first water guide 232 is connected to the water inlet 122, the second water guide 233 is connected to the first water outlet 123, and the third water guide 234 is connected to the second water outlet 124.

[0100] During filtration, raw water is pressurized by the water pump of the water purifier 6 and enters filter element 1 through the first inlet 232 and the inlet 122. It then enters the first filtration chamber through the first inlet channel 114. In the first filtration chamber, the second filter element removes large particles, suspended solids, silt, rust, colloids, and other pollutants larger than one micrometer, as well as small suspended particles. Residual chlorine and odors are also adsorbed. The water then flows through the second inlet channel 113 into the second filtration chamber, where the third filter element removes particles, organic matter, heavy metal ions, bacteria, viruses, etc., resulting in relatively clean purified water and wastewater. Wastewater is discharged from filter element 1 through the second outlet 124 at the bottom of the second filtration chamber and then through the third guide port 234. Purified water enters the central tube 111 through the filter holes on the side wall of the central tube 111. Inside the central tube 111, it is filtered by the first filter element 112, where discoloration, odor, and residual chlorine in the water are deeply adsorbed, and the taste of the water is improved, making it sweeter. The pure water obtained in this way can then be discharged through the first outlet 123 and the second guide port 233 for user use.

[0101] Thus, through multi-stage filtration, various impurities and pollutants in the water are gradually removed, from large particles to tiny pollutants, purifying layer by layer to ultimately provide safe and pure drinking water. The first filter element 112 is built into the central tube 111, allowing for the placement of more filter media within the central tube 111, thereby achieving a stronger filtration effect.

[0102] Furthermore, a one-way valve 115 is provided in the second water inlet channel 113. In addition, the first filter element 112 includes a first carbon layer; the second filter element includes a PP cotton layer 116 and a second carbon layer 117 arranged in the water flow direction; and the third filter element includes an RO membrane layer 118 arranged in the water flow direction.

[0103] The PP cotton layer 116 can be used to filter large particles, suspended solids, silt, rust, colloids, etc. in water, while the second carbon layer 117 can further adsorb residual chlorine and organic matter in water. By combining the PP cotton layer 116 and the carbon layer as a pre-filter, pollutants of different sizes can be effectively intercepted, the filtration effect can be improved, and the subsequent RO membrane can be protected, thus extending the service life of the entire filter element 1.

[0104] In addition, the RO membrane layer 118 is used in conjunction with the central tube 111 as a post-filtration system. The RO membrane layer 118 has extremely high filtration accuracy. The water flow in the filter element 1 can overcome the osmotic pressure under the pressure of the water pump and flow from high concentration to low concentration. Specifically, water molecules can pass through the RO membrane, while impurities such as inorganic salts, particulate organic matter, heavy metal ions, bacteria, and viruses in the raw water cannot pass through the RO membrane layer 118. This ensures that the permeable pure water and the non-permeable wastewater are strictly separated. The wastewater intercepted outside the RO membrane layer 118 is discharged through the second outlet 124 of the second filtration chamber section.

[0105] Therefore, the water filtered through the first filtration chamber can flow unidirectionally to the second filtration chamber via the one-way valve 115. In other words, the one-way valve 115 separates the pre-filtration and post-filtration processes, preventing filtered water and contaminants from returning to the first filtration chamber or the raw water channel. Simultaneously, by preventing backflow, the one-way valve 115 helps maintain the pressure within the second filtration chamber, ensuring optimal filtration performance of the RO membrane 118 and guaranteeing that the water flow in the second filtration chamber has sufficient pressure to penetrate the RO membrane 118 and enter the water guide pipe.

[0106] Example 2

[0107] Unlike Embodiment 1, this embodiment discloses a water purifier 6, see reference. Figure 1 and Figure 15 It includes the filter cartridge locking assembly as described in Embodiment 1. Specifically, the water purifier 6 includes a body and a front panel 48. The body is formed as a mounting base 4. After the filter cartridge 1 is installed in the mounting cavity 43 of the mounting base 4, the front panel 48 can cover the mounting opening. The water circuit board assembly 2 can be installed on the base 41 of the body. The body is provided with pipes. After the water circuit board assembly 2 is rotatably installed on the mounting base 4, the water circuit board 21 is connected to the body. The body can introduce raw water from the faucet into the water circuit of the water circuit board 21 through pipes and a water pump. The pure water produced by the filter cartridge 1 can also be exported to the outside of the body for user use through other water circuits of the water circuit board 21 and other pipes of the body.

[0108] The specific structure of filter element 1, as well as the locking structure between filter element 1 and water circuit plate 21, and between filter element 1 and mounting base 4, are described in detail in Embodiment 1, and will not be explained further here.

[0109] In summary, the water purifier 6 of the present invention features quick filter replacement, convenient installation, reliable locking, and good filtration effect.

[0110] The technical means disclosed in this invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications are also considered within the scope of protection of this invention.

Claims

1. A filter cartridge locking assembly, characterized in that: include, A filter element includes a filter element housing and a central tube disposed within the filter element housing. The bottom of the filter element housing is provided with a connecting part and a water inlet. The water inlet communicates with the central tube. A first filter element is disposed inside the central tube. A water circuit board assembly includes a water circuit board, which has a water inlet and a receiving groove. In the assembled state, the connecting part is inserted into the receiving groove, and the water outlet is connected to the water inlet. The water circuit board is provided with a locking member, which is used to lock or unlock the connecting part under the action of external force. Mounting base, on which the water circuit board is swayably mounted; the mounting base is used to act on the locking member when the water circuit board rotates to drive the locking member to lock or unlock the connecting part.

2. The filter element locking assembly according to claim 1, characterized in that: The mounting base is provided with a pressing part, and one end of the locking member extends outward relative to the water circuit plate with a pushing part; the pushing part is used to be pressed by the pressing part when the water circuit plate swings near the pressing part and drive the locking member to move laterally relative to the water circuit plate; The locking member and the water channel plate are elastically connected by an elastic member, which is arranged along the lateral movement direction of the locking member. The locking member is used to compress the elastic member and lock the connection when it is pressed by the top pressure part. The elastic member is used to provide an elastic force to drive the locking member to move laterally relative to the water channel plate after the locking member moves away from the top pressure part, so as to switch the locked state and the unlocked state.

3. The filter element locking assembly according to claim 2, characterized in that: At least two limiting members are provided on the opposite sides of the connecting part, and the at least two limiting members are spaced apart along the lateral movement direction of the locking member. The locking member includes a locking plate, and the pushing part is disposed at one end of the locking plate in the lateral moving direction; the locking plate has an annular structure and surrounds the receiving groove; the annular inner wall of the locking plate is concave and convex towards the receiving groove so that the concave part forms an unlocking channel and the convex part forms a locking part, the number of unlocking channels and the number of locking parts are equal to the number of limiting members and their positions correspond one-to-one, and the unlocking channel is adapted to the corresponding limiting member; The locking plate moves laterally back and forth relative to the water channel plate to move the locking part or the unlocking channel above the corresponding limiting member, thereby locking or unlocking the connecting part.

4. The filter element locking assembly according to claim 2 or 3, characterized in that: The pushing part is provided with a guide groove extending in the lateral movement direction, and the mounting base is provided with a vertically arranged guide pin. The guide pin is inserted into the guide groove, and the guide groove can move laterally relative to the guide pin.

5. The filter element locking assembly according to claim 4, characterized in that: A filter element holder is installed above the locking plate. The filter element holder has a guide groove adapted to the connecting part. The groove wall of the guide groove is concave and convex towards the connecting part so that the concave part forms a guide channel adapted to the limiting member. Two adjacent convex parts of the guide channel form a guide part. The number of guide channels is equal to the number of limiting members and their positions correspond one-to-one.

6. The filter element locking assembly according to claim 1, characterized in that: The mounting base includes a base and a support wall. The water circuit plate is rotatably connected to the base via a rotating shaft. The support wall and the base form a mounting cavity. The mounting cavity has a mounting opening. The filter element is installed into the mounting cavity through the mounting opening. The support wall is provided with a first locking part; the upper end of the filter element housing is provided with a second locking part; the first locking part is used to lock and connect with the second locking part when the locking member locks the connecting part.

7. The filter element locking assembly according to claim 6, characterized in that: The filter cartridge housing is provided with a handle at its upper end, and the second locking part is located on the handle.

8. The filter element locking assembly according to claim 1, characterized in that: The filter cartridge housing is provided with a first filter section and a second filter section. The first filter section and the second filter section are connected through a second water inlet channel. The central tube is located in the middle of the second filter section, and the side wall of the central tube is provided with filter through holes. The water inlet includes an inlet, a first outlet, and a second outlet. The inlet is connected to the first filter section through a first inlet channel. A second filter element is provided in the first filter section. The first outlet is connected to the outlet end of the central pipe. A third filter element is provided in the second filter section and is arranged around the central pipe. The second outlet is connected to the second filter section.

9. The filter element locking assembly according to claim 8, characterized in that: The second water inlet channel is equipped with a one-way valve; the first filter element includes a first carbon layer; the second filter element includes a PP cotton layer and a second carbon layer arranged along the water flow direction; the third filter element includes an RO membrane layer arranged along the water flow direction.

10. A water purifier, characterized in that: Includes the filter cartridge locking assembly as described in any one of claims 1-9.

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