A water purifier with filter core convenient to replace

Abstract

The utility model relates to a water purifier convenient to replace filter core, include: the casing of inside official business installation space, include integrated waterway board and waterway switching spare's waterway board subassembly, integrated waterway board one end is provided with along an axis extension and the bottom surface is provided with and integrated waterway board waterway intercommunication's first water mouth's installation groove, waterway switching spare is installed in the installation groove and can rotate around an axis and is provided with the second water mouth and water guide column that intercommunication, water guide column is used for with filter core phase, make filter core rotate, can drive waterway switching spare rotates in the installation groove around filter core's axis, second water mouth rotates with waterway switching spare and first water mouth intercommunication or separate. The utility model discloses the water guide column convenient to replace filter core rotates and dismounts filter core, drives waterway switching spare to rotate and makes first water mouth with second water mouth separate, thereby avoids water leakage, and the user replaces filter core conveniently.

Description

Technical Field

[0001] This utility model relates to the field of water purifier technology, and in particular to a water purifier with convenient filter replacement. Background Technology

[0002] As living standards improve, people's quality of life also gradually increases. However, in recent years, secondary pollution of tap water has become increasingly common. Based on people's demand for improved drinking water quality, water purifiers and similar products are gaining popularity. The filter element is the core component of a water purifier, filtering impurities and bacteria from the water. Its purification effect gradually decreases with use. To ensure the purification effect, water purifiers need to replace the filter element regularly.

[0003] Existing water purifiers generally consist of a filter cartridge and an integrated water circuit board. Since the water pipes of the filter cartridge and the integrated water circuit board are directly connected, and the integrated water circuit board is directly connected to the external water inlet pipe, the water pipes of the integrated water circuit board are always full of water. When the filter cartridge is removed for replacement, the water in the water pipes of the integrated water circuit board will flow out. This means that users need to disconnect the water purifier from the external water inlet pipe before replacing the filter cartridge, making it troublesome and inconvenient for users to replace the filter cartridge. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a water purifier with convenient filter replacement.

[0005] A water purifier with convenient filter replacement includes a housing with an internal installation space; a water circuit board assembly including an integrated water circuit board and a water circuit switching component; the integrated water circuit board is disposed within the installation space, with an installation groove for installing the filter at one end, the installation groove extending along an axis on one side of the integrated water circuit board and having a plurality of first water inlets on its bottom surface, each first water inlet communicating with the internal water circuit of the integrated water circuit board; the water circuit switching component is installed in the installation groove and is rotatable around the axis; the side of the water circuit switching component near the integrated water circuit board has a plurality of second water inlets, and the side away from the integrated water circuit board has a plurality of water guide columns extending parallel to the extension direction of the installation groove, the second water inlets corresponding to and communicating with the water guide columns; the water guide columns are used to connect with the filter, so that when the filter rotates, it can drive the water circuit switching component to rotate around the axis within the installation groove; as the water circuit switching component rotates, each first water inlet communicates with or is separated from each second water inlet.

[0006] The water purifier with convenient filter replacement described in this utility model has a filter element that is rotatably connected to an integrated water circuit board via a water circuit switching component. During operation, the first water inlet of the integrated water circuit board is connected to the second water inlet of the water circuit switching component. When the filter element is rotated to remove it, the filter element drives the water circuit switching component to rotate, causing the first water inlet and the second water inlet to be separated and disconnected, thereby preventing water leakage and making it convenient for users to replace the filter element.

[0007] Furthermore, the mounting groove includes a first space and a second space connected along the axis, the first space being close to the integrated water circuit board; the first water inlet is opened on the side of the first space that connects to the integrated water circuit board, the water circuit switching component extends to the first water inlet, and the second water inlet connects the first space and the second space.

[0008] With the above technical solution, the first water inlet and the second water inlet are connected when their positions correspond, and disconnected when their positions are misaligned by the water circuit switching component near the surface of the integrated water circuit board.

[0009] Furthermore, the water circuit switching component also includes a connecting plate and a first protrusion. The first protrusion protrudes from one end of the connecting plate near the integrated water circuit plate and is located within the first space. A first circumferentially extending protruding edge is provided on the inner side of the first space, and a groove that mates with the first circumferentially extending edge is recessed on the outer periphery of the first protrusion. The first circumferentially extending edge is embedded in the groove.

[0010] Through the above technical solution, the water circuit switching component can be rotatably installed in the filter element mounting groove by the cooperation of the first protrusion and the groove.

[0011] Furthermore, the inner side of the second space is also recessed with a limiting groove extending around the axis. The limiting groove has an opening in the extending direction. The length of the limiting groove is less than the circumference of the mounting groove. The limiting groove is for the protrusion of the filter element to be inserted.

[0012] With the above technical solution, the protrusion is locked in the limiting groove during operation to limit the filter element and prevent the filter element from shaking.

[0013] Furthermore, the inner side of the second space is also provided with a guide portion extending circumferentially, and along the axis, the guide portion is close to the integrated water circuit plate; as the filter element rotates, the protrusion of the filter element can enter the limiting groove along the guide portion or disengage from the limiting groove.

[0014] Through the above technical solution, the guide part plays a guiding role, guiding the protrusion into or out of the limiting groove.

[0015] Furthermore, it also includes a filter element that extends along the axis; the limiting groove, the guide portion, and the protrusion are provided in two sets, and the two sets of the limiting groove, the guide portion, and the protrusion are respectively located on opposite sides of the filter element in the radial direction.

[0016] The above technical solution creates a double limit, further preventing the filter element from shaking.

[0017] Furthermore, the water circuit switching component also includes several connecting posts, the connecting posts protruding from the surface of the connecting plate away from the integrated water circuit plate, and extending in a direction parallel to the extension direction of the water guide column. The filter element has several connecting holes on the side facing the integrated water circuit plate, and the connecting posts correspond one-to-one with the connecting holes and are inserted into the connecting holes.

[0018] The above technical solution makes the connection between the filter element and the water circuit switching component more stable.

[0019] Furthermore, an O-ring is also provided around the outside of the first sprue, and the O-ring is located between the first protrusion and the inner side of the first space.

[0020] Through the above technical solution, the O-ring seals play a sealing role and prevent water leakage.

[0021] Furthermore, on the side of the filter element away from the integrated water circuit board, there is a radially extending receiving groove. A handle is hinged in the receiving groove, with its hinge axis close to the outer periphery of the filter element and perpendicular to the axis. The handle can rotate around its hinge axis and extend out of the receiving groove.

[0022] The above technical solution allows users to easily rotate and twist out the filter element for replacement.

[0023] Furthermore, the water purifier with convenient filter replacement also includes a water pump and a control unit. The water pump is fixedly installed in the installation space, and the water pump's inlet and outlet pipes are connected to the integrated water circuit board. The control unit is electrically connected to the water pump.

[0024] Through the above technical solution, the control unit controls the operation of the water purifier through the water pump. Attached Figure Description

[0025] Figure 1 A schematic diagram of the spatial structure of a water purifier with a convenient filter cartridge replacement provided by this utility model;

[0026] Figure 2 Exploded view of the water purifier with convenient filter replacement provided by this utility model;

[0027] Figure 3A schematic diagram of the spatial structure of the water channel board assembly provided by this utility model;

[0028] Figure 4 A front view of the filter element mounting groove provided by this utility model, projected along the filter element axis.

[0029] Figure 5 A schematic diagram of the spatial structure of the filter element mounting base and the integrated water circuit board provided by this utility model;

[0030] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0031] Figure 7 The front view projected along the filter element axis when the filter element mounting groove provided by this utility model is engaged with the water circuit switching component;

[0032] Figure 8 for Figure 7 A sectional view taken along the AA direction;

[0033] Figure 9 When the water circuit board assembly provided by this utility model is used in conjunction with the filter element, it follows the... Figure 8 A sectional view cut in one direction;

[0034] Figure 10 A schematic diagram of the spatial structure of the waterway switching component provided by this utility model in one direction;

[0035] Figure 11 A schematic diagram of the spatial structure of the waterway switching component provided by this utility model in another direction;

[0036] Figure 12 A schematic diagram of the spatial structure of the filter element provided by this utility model in one direction;

[0037] Figure 13 This is a schematic diagram of the spatial structure of the filter element provided by this utility model in another direction. Detailed Implementation

[0038] To address the inconvenience of replacing filter cartridges in existing water purifiers, the applicant provides a water purifier with an easily replaceable filter cartridge. In this design, the filter cartridge is rotatably connected to an integrated water circuit board via a water circuit switching component. When the user needs to disassemble and replace the filter cartridge, there is no need to disconnect the external water inlet pipe from the water purifier. Simply twisting the filter cartridge rotates the water circuit switching component, which closes the water circuit of the integrated water circuit board, thus preventing water from flowing out of the integrated water circuit board and causing inconvenience to the user during filter cartridge replacement. The following is one embodiment of the easily replaceable filter cartridge water purifier provided by this application:

[0039] Please refer to Figures 1 to 13 , Figure 1A schematic diagram of the spatial structure of a water purifier with a convenient filter cartridge replacement provided by this utility model;

[0040] Figure 2 Exploded view of the water purifier with convenient filter replacement provided by this utility model; Figure 3 A schematic diagram of the spatial structure of the water channel board assembly provided by this utility model; Figure 4 A front view of the filter element mounting groove provided by this utility model, projected along the filter element axis.

[0041] Figure 5 A schematic diagram of the spatial structure of the filter element mounting base and the integrated water circuit board provided by this utility model; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 The front view projected along the filter element axis when the filter element mounting groove provided by this utility model is engaged with the water circuit switching component; Figure 8 for Figure 7 A sectional view taken along the AA direction; Figure 9 When the water circuit board assembly provided by this utility model is used in conjunction with the filter element, it follows the... Figure 8 A sectional view cut in one direction; Figure 10 A schematic diagram of the spatial structure of the waterway switching component provided by this utility model in one direction; Figure 11 A schematic diagram of the spatial structure of the waterway switching component provided by this utility model in another direction; Figure 12 A schematic diagram of the spatial structure of the filter element provided by this utility model in one direction; Figure 13 This is a schematic diagram of the spatial structure of the filter element provided by this utility model in another direction.

[0042] This utility model provides a water purifier with convenient filter replacement, including a housing 1, a water circuit board assembly 2, a filter element 3, a water pump 4, and a control unit 5.

[0043] The housing 1 includes a bottom plate 11, side plates 12, and a top plate 13. The side plate 12 is a frame, and the bottom plate 11 and top plate 13 respectively cover the openings on opposite sides of the side plate 12, with an installation space inside (not shown in the figure). The side plate 12 has several first through holes 121 for connecting the water purifier to external pipelines. In this embodiment, the first through holes 121 include a water inlet 1211, a first water outlet 1212, a second water outlet 1213, and a wastewater outlet 1214. The top plate 13 also has several second through holes 131 and third through holes 132. The filter element 3 passes through the second through holes 131 and is inserted into the installation space, and the control unit 5 passes through the third through holes 132 and is installed in the installation space.

[0044] The water circuit board assembly 2 is disposed within the installation space and includes an integrated water circuit board 21, an interface 22, a filter element mounting base 23, and a water circuit switching component 24. The integrated water circuit board 21 is laid on the inner side surface of the base plate 11 and is integrated through multiple water pipes to form multiple layers of built-in water circuits to meet the design requirements of different water circuits of the water purifier. Its detailed water circuit structure is existing technology and will not be described in detail here.

[0045] The interface 22 protrudes from one side of the integrated water circuit board 21. In this embodiment, the extension direction of the interface 22 is parallel to the surface of the base plate 11. The interface 22 includes a water inlet 221, a first water outlet 222, a second water outlet 223, and a wastewater outlet 224. One end of the water inlet 221 is connected to the water inlet pipe in the integrated water circuit board 21, and the other end extends from the water inlet hole 1211 to connect with the external water inlet pipe. The raw water to be filtered enters from the water inlet 221. One end of the first water outlet 222 is connected to the coarse filtration water pipe in the integrated water circuit board 21, and the other end extends from the first water outlet hole 1212 to connect with the external first water outlet pipe. The coarsely filtered purified water is discharged from the first water outlet 222; one end of the second water outlet 223 is connected to the pure water pipe in the integrated water circuit board 21, and the other end extends out of the second water outlet hole 1213 and is connected to the external second water outlet pipe, and the purified water after multiple filtrations is discharged from the second water outlet 223; one end of the wastewater outlet 224 is connected to the wastewater pipe in the integrated water circuit board 21, and the other end extends out of the wastewater hole 1214 and is connected to the external sewage pipe, and the wastewater generated during filtration is discharged from the wastewater outlet 224. In this embodiment, the interface 22 is integrally formed with the integrated water circuit board 21, thereby avoiding water leakage caused by poor sealing at the connection between the interface 22 and the integrated water circuit board 21.

[0046] The filter element mounting base 23 is fixedly mounted on the surface of the integrated water circuit plate 21 facing the mounting space, and is used to mount the filter element 3. Specifically, the filter element mounting base 23 has a plurality of filter element mounting grooves 231 extending perpendicular to the surface of the integrated water circuit plate 21. The filter element mounting grooves 231 include a first space 2311 and a second space 2312 extending along the axial direction of the filter element 3. The first space 2311 communicates with the second space 2312 and is located between the second space 2312 and the integrated water circuit plate 21, and the diameter of the first space 2311 is smaller than that of the second space 2312. A plurality of first water inlets 232 are provided at the bottom of the first space 2311, and the first water inlets 232 communicate with corresponding pipes in the integrated water circuit plate 21. Multiple first water inlets 232 can be respectively connected to the raw water, coarse filtered water, pure water, and wastewater pipes of the integrated water circuit board 21. Since the connection method between the first water inlets 232 and the integrated water circuit board 21 is a conventional design in existing technology, it will not be described in detail here. In this embodiment, the filter element mounting base 23 is integrally formed with the integrated water circuit board 21, thereby ensuring the sealing between the filter element mounting base 23 and the integrated water circuit board 21 and reducing the risk of leakage.

[0047] The water circuit switching component 24 is rotatably mounted in the filter element mounting groove 231, which rotates about an axis parallel to the axial direction of the filter element 3. It includes a connecting plate 241, a first protrusion 242, and a water guide column 243. The connecting plate 241 is a circular flat plate with a diameter equal to the diameter of the second space 2312, covering the connection between the first space 2311 and the second space 2312. The first protrusion 242 protrudes from the end face of the connecting plate 241 near the first space 2311 and extends towards the integrated water circuit plate 21 to cover the first water inlet 232. The diameter of the first protrusion 242 is equal to the diameter of the first space 2311, so that the outer periphery of the first protrusion 242 fits against the inner periphery of the first space 2311, forming a seal. The water guide column 242 protrudes from the end face of the connecting plate 241 near the second space 2312 and extends away from the integrated water circuit plate 21. The first protrusion 242 has a second water inlet 2422 at one end near the integrated water circuit plate 21, which corresponds to and communicates with the water guide column 243. As the water circuit switching component 24 rotates, each first water inlet 232 can communicate with or separate from each second water inlet 2422. Furthermore, a first circumferentially extending protruding edge 2313 protrudes from the inner side of the first space 2311, and a groove 2421 that mates with the first circumferentially extending edge 2313 is recessed on the outer periphery of the first protrusion 242, so that a stable engaging structure is formed between the water circuit switching component 24 and the filter element mounting base 23.

[0048] During installation, the connecting plate 241 is engaged within the second space 2312, and the first protrusion 242 extends into the first space 2311, with its end face near the first space 2311 contacting the bottom surface of the first space 2311, and the first protruding edge 2313 embedded in the groove 2421. As the water circuit switching component 24 rotates, each first water inlet 232, each second water inlet 2422, and each water guide column 243 correspond one-to-one and are interconnected. When the filter element needs to be replaced, by rotating the water circuit switching component 24, the positions of the first water inlets 232 and the second water inlets 2422 are offset, and the end face of the first protrusion 242 covers the first water inlet 232, thus disconnecting the connection between the first water inlet 232 and the second water inlet 242. This disconnects the integrated water circuit plate 21 and the water circuit switching component 24, preventing water from flowing out of the integrated water circuit plate 21 when the filter element is replaced, thus improving the user experience.

[0049] Furthermore, O-rings 233 are also provided around the outer side of several first water inlets 232. The O-rings 233 are located between the inner side of the first protrusion 242 and the first space 2311, and are used to improve the sealing between the integrated water circuit board 21 and the water circuit switching component 24 to prevent water leakage.

[0050] The filter element 3 is rotatably mounted into the filter element mounting groove 231 via the water circuit switching component 24. Specifically, the filter element 3 extends along an axis, with one end of the filter element 3 near the bottom of the filter element mounting groove 231 serving as a plug-in end and the other end away from the bottom of the filter element mounting groove 231 serving as a handle end. The plug-in end of the filter element 3 is connected to the water circuit switching component 24, and the handle end of the filter element 3 passes through the second through hole 131 and protrudes from the outside of the housing 1. The plug-in end of the filter element 3 has several third water inlets 31, each of which communicates with the internal water circuit of the filter element 3. Each third water inlet 31 corresponds one-to-one with a water guide column 243, and each water guide column 243 is inserted into a third water inlet 31. The internal structure of the filter element 3 is existing technology and will not be described in detail here. The filter element 3 has a radially extending receiving groove 32 at its handle end. A handle 33 is hinged within the receiving groove 32, with its hinge axis close to the outer periphery of the filter element 3 and perpendicular to the axis of the filter element 3. The handle 33 can rotate around its hinge axis and extend out of the receiving groove 32. In this embodiment, the filter element 3, the filter element mounting groove 231, and the water circuit switching component 24 are provided in two sets. One filter element 3 is an activated carbon filter element in the prior art, used to coarsely filter the raw water flowing into the water inlet 221 to obtain purified water, which can be used for household washing of vegetables, etc. The other filter element 3 is an RO membrane filter element, used to further filter the coarsely filtered purified water to obtain pure water, which can be consumed by the user.

[0051] Furthermore, a plurality of connecting posts 2411 are protruding on the end face of the connecting plate 241 near the second space 2312. The extending direction of the connecting posts 2411 is parallel to the extending direction of the water guide column 243. A plurality of connecting holes 34 are also provided on the insertion end of the filter element 3. During installation, the connecting posts 2411 are inserted into the connecting holes 34, making the connection between the water circuit switching component 24 and the filter element 3 more stable.

[0052] Furthermore, a limiting groove 234 extending circumferentially along the filter element mounting groove 231 is recessed on the inner side of the second space 2312. An opening is provided on one side of the limiting groove 234 in the circumferential direction of the filter element mounting groove 231, and the length of the limiting groove 234 is less than the circumference of the filter element mounting groove 231, forming a clearance opening (not shown in the figure). A protrusion 35, which mates with the limiting groove 234, protrudes from the outer periphery of the insertion end of the filter element 3. When installing the filter element 3, the protrusion 35 is inserted into the first space 2311 from the clearance opening, causing the end face of the filter element 3 facing the integrated water circuit board 21 to abut against the surface of the connecting plate 231. Then, the user applies force to rotate the filter element 3, causing the protrusion 35 to rotate from the opening of the limiting groove 234 into the limiting groove 234, thus axially limiting the filter element 3 and preventing axial shaking during normal operation.

[0053] Furthermore, a guide portion 235 protrudes from the inner side of the second space 2312. The guide portion 235 is located within the limiting groove 234 and extends circumferentially spirally along the inner side of the second space 2312. Axially, the guide portion 235 is located on the side closer to the integrated water circuit plate 21, and the distance from the side of the guide portion 235 near the opening of the limiting groove 234 to the integrated water circuit plate 21 is greater than the distance from the side of the guide portion 235 away from the opening of the limiting groove 234 to the integrated water circuit plate 21. The guide portion 235 serves a guiding function. When the filter element 3 is installed, the protrusion 35 enters near the clearance opening and abuts against the end face of the guide portion 235 on the side away from the integrated water circuit plate 21. As the filter element 3 rotates, the protrusion 35 slides into the limiting groove 234 under the guidance of the guide portion 235, forming an axial limit on the filter element 3 and preventing axial shaking during normal operation.

[0054] Furthermore, the limiting groove 234, the guide part 235 and the protrusion 35 are provided in two sets. The two sets of limiting groove 234, guide part 235 and protrusion 35 are symmetrically arranged about the axis of the filter element 3, forming a double limit on the filter element 3 in the axial direction, further preventing the filter element 3 from shaking axially during normal operation.

[0055] The water pump 4 is installed within the installation space and is used to pump water into the water purifier. Specifically, the water pump 4 is fixedly installed on the side plate 12, and the inlet and outlet channels of the water pump 4 are connected to the corresponding pipes of the integrated water circuit board 21. The water pump 4 is electrically connected to the control unit 5, and the control unit 5 controls the water pump 4 to turn on or off.

[0056] The control unit 5 includes a controller (not shown), a display 51, and several solenoid valves 52. The controller is located within the installation space and is electrically connected to the water pump 4, the display 51, and the solenoid valves 52, respectively, for receiving input signals and controlling the operation of the corresponding devices. The display 51 passes through the third through-hole 132 and protrudes from the outside of the housing 1, allowing the user to view the operating status of each device and input control signals. The several solenoid valves 52 are respectively located in each pipe of the integrated water circuit board 21, for controlling the on / off state of each pipe in the integrated water circuit board 21.

[0057] Furthermore, the housing 1 also includes a cover plate 14, which is detachably installed on the side of the top plate 13 away from the bottom plate 11 and has a fourth through hole (not shown in the figure). The cover plate 14 is used to cover the filter element 3, isolating the filter element 3 from the outside world and providing protection. The display 51 passes through the fourth through hole and protrudes from the outside of the housing 1.

[0058] The principle behind the easy replacement of the filter element in this water purifier provided by this utility model is as follows:

[0059] When assembling the filter element 3 onto the filter element mounting base 23: the water guide column 243 is inserted into the corresponding third water inlet 31 on the insertion end of the filter element 3, thereby connecting the filter element 3 with the water circuit switching component 24. At this time, the protrusion 35 enters the filter element mounting groove 231 from the clearance opening and abuts against the upper surface of the guide portion 235. Then, the handle 33 is rotated to extend it out of the receiving groove 32. The user applies force through the handle 33 to twist the filter element 3, causing the water circuit switching component 24 to rotate, so that the protrusion 35 rotates under the guidance of the guide portion 235 and is locked in the limiting groove 234. At this time, the first water inlet 232 and the second water inlet 2422 are connected, and the filter element 3 begins to work.

[0060] When removing the filter element 3 from the filter element mounting base 23: rotate the handle 33 to extend it out of the receiving groove 32, and the user applies force through the handle 33 to twist the filter element 3 in the opposite direction, causing the water circuit switching component 24 to rotate in the opposite direction, so that the protrusion 35 is dislodged from the limiting groove 234 under the guidance of the guide part 235, releasing the axial limitation on the filter element 3. At this time, the first water outlet 232 and the second water outlet 2422 are disconnected, and then the filter element 3 is pulled out from the filter element mounting groove 231 to complete the disassembly.

[0061] This utility model provides a water purifier that facilitates filter replacement. A rotatable water circuit switching component 24 is provided on the filter mounting base 23. The filter element 3 is rotatably connected to the integrated water circuit plate 21 via the water circuit switching component 24. The filter element 3 drives the water circuit switching component to rotate, thereby opening or closing the connection between the first water inlet 232 on the filter mounting base 23 and the second water inlet 2422 on the water circuit switching component 24. When replacing the filter element, rotating the water circuit switching component 24 cuts off the water flow channel, preventing water from overflowing from the integrated water circuit plate. This avoids the cumbersome step of disconnecting the external water inlet pipe from the water purifier during filter replacement, improving the user experience.

[0062] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A water purifier with a convenient filter cartridge replacement, characterized in that, include: The casing has an internal installation space. A water circuit board assembly includes an integrated water circuit board and a water circuit switching component; the integrated water circuit board is disposed in the installation space, and one end of it has an installation groove for installing a filter element. The installation groove extends along an axis on one side of the integrated water circuit board and has a plurality of first water inlets on its bottom surface. Each first water inlet is connected to the internal water circuit of the integrated water circuit board. The water circuit switching component is installed in the mounting groove and can rotate around the axis; a plurality of second water inlets are opened on the side plate of the water circuit switching component near the integrated water circuit plate, and a plurality of water guide columns extending in a direction parallel to the extension direction of the mounting groove are protruding on the side plate away from the integrated water circuit plate. The second water inlets correspond one-to-one with the water guide columns and are connected; the water guide columns are used to connect with the filter element, so that when the filter element rotates, it can drive the water circuit switching component to rotate around the axis in the mounting groove; As the waterway switching component rotates, each first water inlet is connected to or separated from each second water inlet.

2. The water purifier with convenient filter replacement according to claim 1, characterized in that: The mounting groove includes a first space and a second space connected along the axis, the first space being close to the integrated water circuit board; the first water inlet is located on the side of the first space that connects to the integrated water circuit board, the water circuit switching component extends to the first water inlet, and the second water inlet connects the first space and the second space.

3. The water purifier with convenient filter replacement according to claim 2, characterized in that: The water circuit switching component also includes a connecting plate and a first protrusion. The first protrusion protrudes from one end of the connecting plate near the integrated water circuit plate and is located within the first space. A first circumferentially extending protruding edge is provided on the inner side of the first space, and a groove that mates with the first circumferentially extending edge is recessed on the outer periphery of the first protrusion. The first circumferentially extending edge is embedded in the groove.

4. The water purifier with convenient filter replacement according to claim 3, characterized in that: The inner side of the second space is also recessed with a limiting groove extending around the axis. The limiting groove has an opening in the extending direction. The length of the limiting groove is less than the circumference of the mounting groove. The limiting groove is for the protrusion of the outer periphery of the filter element to be inserted.

5. The water purifier with convenient filter replacement according to claim 4, characterized in that: The inner side of the second space is also provided with a guide portion extending circumferentially, and along the axis, the guide portion is close to the integrated water circuit plate; As the filter element rotates, the protrusions of the filter element can enter or exit the limiting groove along the guide portion.

6. The water purifier with convenient filter replacement according to claim 5, characterized in that: It also includes a filter element that extends along the axis; the limiting groove, the guide portion and the protrusion are provided in two sets, and the two sets of the limiting groove, the guide portion and the protrusion are respectively located on opposite sides of the filter element in the radial direction.

7. The water purifier with convenient filter replacement according to claim 6, characterized in that: The water circuit switching component also includes several connecting posts. The connecting posts protrude from the surface of the connecting plate away from the integrated water circuit plate and extend in a direction parallel to the extension direction of the water guide column. The filter element has several connecting holes on the side facing the integrated water circuit plate. The connecting posts correspond one-to-one with the connecting holes and are inserted into the connecting holes.

8. The water purifier with convenient filter replacement according to claim 3, characterized in that: An O-ring is also provided around the outside of the first water inlet, and the O-ring is located between the first protrusion and the inner side of the first space.

9. The water purifier with convenient filter replacement according to claim 6, characterized in that: The filter element has a radially extending receiving groove on the side away from the integrated water circuit board. A handle is hinged in the receiving groove, with its hinge axis close to the outer periphery of the filter element and perpendicular to the axis of the filter element. The handle can rotate around its hinge axis and extend out of the receiving groove.

10. The water purifier with convenient filter replacement according to claim 1, characterized in that: It also includes a water pump and a control unit. The water pump is fixedly installed in the installation space, and the water pump's inlet pipe and outlet pipe are connected to the integrated water circuit board. The control unit is electrically connected to the water pump.

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