A multi-stage filtration tabletop water purifier

Abstract

The present invention discloses a multi-stage filtering tabletop water purifier, which includes a machine compartment and a filter element. A detachable side baffle is provided on one side of the machine compartment. It further includes: a connecting seat, which is elastically movably connected in the machine compartment; a connecting head, which is hinged on the connecting seat and has a first state vertically arranged during its rotation stroke and a second state in which the lower end tilts outwards towards the outside after the side baffle is disassembled. In the first state of the connecting head, the filter element is connected to the lower end of the connecting head and is limited in the machine compartment under a pressing force. In the second state of the connecting head, the filter element is movably detachably connected to the connecting head. By providing a rotatable and movable connecting head, the present invention facilitates the disassembly and installation of the filter element. Moreover, when the filter element is installed at the lower end of the connecting head in the first state of the connecting head, it remains under a pressing force. Thus, on the one hand, the filter element can be limited in the machine compartment, and on the other hand, the tight connection between the connecting head and the filter element can be ensured, replacing the traditional method of stuffing soft pads and improving the sealing performance.

Description

Technical Field

[0001] The invention relates to the technical field of water purifiers, and in particular to a multi-stage filtering desktop water purifier. Background Art

[0002] A water purifier, also known as a water purifier or a water purifier, is a water treatment device that deeply filters and purifies water according to the requirements for water use. A water purifier usually treats water by filtering it, and it is divided into multiple stages of filtration to ensure that all kinds of harmful impurities in the water are removed. Therefore, the technical core of a water purifier is the filter membrane in the filter element device, which mainly includes ultrafiltration membrane, RO reverse osmosis membrane, nanofiltration membrane and other types.

[0003] Patent document CN208389480U disclosed a water purifier on January 18, 2019, which solved the problem of separate arrangement of water purification filter device and pure water heating device in water purifier at the current stage. The key points of its technical solution are a water purifier, including a water purification filter device, a pure water heating device and a water purification shell, the water purification filter device includes a raw water tank, a multi-stage filter element assembly and a water delivery pump, the pure water heating device includes a pure water tank, a rapid heater and a water intake pump, the water purification shell has an installation cavity and a mounting base located on one side of the installation cavity, the installation cavity is provided with a mounting bracket for installing the pure water tank, the outer wall of the pure water tank has a mounting groove for installing the rapid heater, the water delivery pump and the water intake pump are arranged in the installation cavity and located below the pure water tank, the multi-stage filter element assembly is installed in the installation cavity and installed on the side of the installation bracket close to the installation base, the raw water tank is installed on the installation base, and the water purifier has a compact structure.

[0004] In the prior art such as the above-mentioned patent, the filter element has a service life and needs to be replaced regularly. The filter element is usually installed on a connector provided on the water purifier. The connector adopts a rotating method to facilitate the installation of the filter element. However, after the filter element is installed and straightened, its bottom will be suspended in the air. The transmission fixing method will insert foam, sponge and other soft pads at the bottom. However, this method is not only inconvenient, but also the long-term hanging use of the filter element will easily affect the connection sealing. Therefore, there is an urgent need for a multi-stage filtration desktop water purifier to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a multi-stage filtering tabletop water purifier to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A multi-stage filtration tabletop water purifier includes a machine chamber and a filter element installed inside the machine chamber. A detachable side baffle is provided on one side of the machine chamber, and further includes: a connecting seat elastically and movably connected inside the machine chamber; a connecting head hinged on the connecting seat, which has a first state arranged vertically during the rotation stroke and a second state in which the lower end tilts outwards in the direction of the outside after the side baffle is disassembled. In the first state of the connecting head, the filter element is connected to the lower end of the connecting head and is limited in the machine chamber under a pressing force. In the second state of the connecting head, the filter element is movably and detachably connected to the connecting head.

[0008] Preferably, an activity groove is provided on the inner wall of the machine chamber, a slider is arranged to move up and down in the activity groove, an elastic member is arranged at the upper end of the slider, and the connecting seat is connected to the slider.

[0009] Preferably, a protruding portion that penetrates the inner wall of the machine chamber is provided on the slider, and the protruding portion is connected to the connecting seat through a fastener.

[0010] Preferably, a groove for inserting the filter element is provided at the lower end of the connecting head, an annular groove is provided on the inner wall of the groove, an elastic sealing ring is arranged in the annular groove, a sealing groove matching the elastic sealing ring is arranged at the upper end of the filter element, and a clamping assembly is arranged on the side wall of the connecting head. The clamping assembly controls the inner diameter of the elastic sealing ring to decrease when the connecting head is in the second state.

[0011] Preferably, the clamping assembly includes a clamping member movably arranged inside the connecting head. There is a break point on the elastic sealing ring, and extrusion portions wedge-fitted with the clamping member are arranged on the outer sides of both ends formed at the break point. An abutting portion that slidably penetrates the outer side wall of the connecting head is arranged at one end of the clamping member away from the elastic sealing ring.

[0012] Preferably, a bushing is arranged on the connecting seat, and a shaft tube rotatably connected to the bushing is arranged on the connecting head.

[0013] Preferably, a conduit is inserted into the shaft tube, and each conduit is arranged to access the filter pipeline.

[0014] Preferably, a hollow groove for the conduit to pass through is arranged inside the machine chamber, an extrusion member is movably arranged on one side of the hollow groove, the extrusion member and the slider are linked through a linkage assembly, and when the slider is at the lowest position of the moving stroke in the activity groove, the extrusion member remains inserted into the hollow groove to press the conduit.

[0015] Preferably, the linkage assembly includes a sliding member fixedly connected to the extrusion member, a sliding groove matching the sliding member is arranged inside the machine chamber, a ramp body is fixedly arranged on the sliding member, and a pressing block wedge-fitted with the ramp body is fixedly arranged at the lower end of the slider.

[0016] Preferably, the pipe wall of the conduit is elastically arranged.

[0017] In the above technical solution, the beneficial effects of the present invention are as follows:

[0018] By providing a rotatable and movable connector, and the connector can be switched between a first state and a second state, the multi-stage filtering tabletop water purifier can facilitate the disassembly and installation of the filter element. Moreover, when the filter element is installed at the lower end of the connector in the first state of the connector, it is kept under a pressing force. Thus, on the one hand, the filter element can be limited in the machine compartment, and on the other hand, the tight connection between the connector and the filter element can be ensured, replacing the traditional method of stuffing soft pads and improving the sealing performance.

[0019] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the present disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a complete disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0022] Figure 1 The overall structural schematic diagram after the side baffle is opened provided by the embodiment of the present invention;

[0023] Figure 2 The overall structural schematic diagram provided by the embodiment of the present invention;

[0024] Figure 3 The front view sectional structural schematic diagram of the connector in the first state provided by the embodiment of the present invention;

[0025] Figure 4 Provided by the embodiment of the present invention Figure 3 The enlarged structural schematic diagram of part A;

[0026] Figure 5 The front view sectional structural schematic diagram of the connector in the second state provided by the embodiment of the present invention;

[0027] Figure 6 The top view sectional structural schematic diagram of the groove provided by the embodiment of the present invention;

[0028] Figure 7 Provided by the embodiment of the present invention Figure 6 The enlarged structural schematic diagram of part B;

[0029] Figure 8 Schematic top-down sectional structure view of the extrusion part provided by the embodiment of the present invention;

[0030] Figure 9 Schematic internal structure view of the machine cabin provided by the embodiment of the present invention;

[0031] Figure 10 Schematic structure view of the clamping assembly provided by the embodiment of the present invention.

[0032] Explanation of reference numerals:

[0033] 1. Machine cabin; 2. Filter element; 3. Side baffle; 4. Connecting seat; 5. Connecting head; 6. Activity groove; 7. Slide block; 8. Elastic member; 9. Protrusion; 10. Groove; 11. Concave ring groove; 12. Elastic sealing ring; 13. Sealing groove; 14. Clamping member; 15. Extrusion part; 16. Abutting part; 17. Sleeve; 18. Shaft tube; 19. Duct; 20. Hollow groove; 21. Extrusion part; 22. Sliding member; 23. Sliding groove; 24. Slope body; 25. Pressing block; 26. Fastening member. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0035] Please refer to Figure 1-10 , a multi-stage filtration tabletop water purifier provided by the embodiment of the present invention includes a machine cabin 1 and a filter element 2 installed inside the machine cabin 1. A detachable side baffle 3 is provided on one side of the machine cabin 1. It further includes: a connecting seat 4, which is elastically and movably connected inside the machine cabin 1; a connecting head 5, which is hinged to the connecting seat 4 and has a first state arranged vertically and a second state in which the lower end tilts outwards in the direction away from the side baffle 3 after the side baffle 3 is disassembled during the rotation stroke. In the first state of the connecting head 5, the filter element 2 is connected to the lower end of the connecting head 5 and is limited in the machine cabin 1 under a pressing force. In the second state of the connecting head 5, the filter element 2 is movably and detachably connected to the connecting head 5.

[0036] Specifically, a water tank seat is provided on one side of the machine compartment 1 opposite to the side baffle 3, and a water tank is installed on the water tank seat; on the other side of the machine compartment 1, a water outlet head and a water receiving table are provided, and the water receiving table is arranged directly below the water outlet head; after the side baffle 3 is disassembled, one side of the machine compartment 1 is open, and the inside of the machine compartment 1 is exposed for the installation, disassembly or maintenance of the filter element 2; preferably, there are three filter elements 2, which are divided into: RO filter element, that is, a filter element using a reverse osmosis membrane, which can remove almost all pollutants such as heavy metals, bacteria, viruses, and inorganic substances in water and is the core purification unit of the water purification system; T33 filter element, which is a post-activated carbon, mainly optimizing the taste of water, adsorbing residual odors and chlorine, and inhibiting the growth of bacteria; PPC filter element, which is a composite filter element, usually containing the combined functions of PP cotton and activated carbon, used to filter large particulate impurities and adsorb pollutants such as chlorine, abnormal color, and organic substances; the three filter elements are arranged in sequence in the filter pipeline according to the usage requirements; the inner wall of the machine compartment 1 is set as a curved surface that fits the shape of the filter element 2. The connecting seat 4 is connected inside the machine compartment 1, and the moving direction is set as a lifting movement; the connecting head 5 is used to install and connect the filter element 2, and a water flow channel is arranged inside, and is docked with the inlet and outlet on the filter element 2; the rotating shaft of the connecting head 5 is arranged on its side, and its rotating direction is to rotate and swing in the direction of the lower end approaching or moving away from the connecting seat 4. Then, after the side baffle 3 is disassembled, the lower end of the connecting head 5 can swing and switch the orientation to the inside and outside of the machine compartment 1; in the first state of the connecting head 5, that is, the connecting head 5 is vertically arranged, and the filter element 2 connected to the connecting head 5 is also vertically and completely received inside the machine compartment 1. At the same time, under the height setting of the filter element 2, the connecting head 5 drives the connecting seat 4 to rise a certain height to generate an elastic force, so that the connecting head 5 exerts a downward pressing force on the filter element 2; in the second state of the connecting head 5, that is, the lower end of the connecting head 5 swings towards the outside of the machine compartment 1. At this time, the lower end of the filter element 2 connected to the connecting head 5 is completely moved out of the machine compartment 1; when switching between the first state and the second state of the connecting head 5, when the filter element 2 is connected to the connecting head 5, the lower end of the filter element 2 swings in and out of the inside of the machine compartment 1. In the actual use of this technical solution, when replacing the filter element 2, first open the side baffle 3, and then pull the lower end of the filter element 2 outwards forcefully towards the outside of the machine compartment 1, so that the connecting head 5 swings and drives the connecting seat 4 to move upwards passively. During this process, the connecting head 5 switches from the first state to the second state. After the lower end of the filter element 2 moves out of the machine compartment 1, it can be easily removed downward, and the connecting seat 4 automatically moves downward under the elastic force; then replace the new filter element 2 and insert the connecting head 5, and then while pushing the filter element 2 upwards to make the connecting seat 4 move upwards, and while pushing the lower end of the filter element 2 towards the inside of the machine compartment 1, the connecting head 5 switches back from the second state to the first state, and the filter element 2 is under the lower end of the connecting head 5 to maintain a pressing force. Thus, on the one hand, the filter element 2 can be limited inside the machine compartment 1, and on the other hand, the tight connection between the connecting head 5 and the filter element 2 can be ensured, replacing the traditional method of stuffing soft pads and improving the sealing performance.

[0037] Compared with the prior art, a multi-stage filtration tabletop water purifier proposed in an embodiment of the present invention can facilitate the disassembly and installation of the filter element 2 by providing a rotatable and movable connector 5, and the connector 5 can be switched between a first state and a second state. Moreover, when the filter element 2 is installed at the lower end of the connector 5 in the first state of the connector 5, it is kept under a pressing force. Thus, on the one hand, the filter element 2 can be kept limited in the machine chamber 1, and on the other hand, the tight connection between the connector 5 and the filter element 2 can be ensured, replacing the traditional way of stuffing soft pads and improving the sealing performance.

[0038] As a preferred technical solution of this embodiment, a movable groove 6 is provided on the inner wall of the machine chamber 1, a slider 7 is arranged to move up and down in the movable groove 6, an elastic member 8 is arranged at the upper end of the slider 7, and the connecting seat 4 is connected to the slider 7. Specifically, the movable groove 6 is opened in the entity of the inner wall of the machine chamber 1, and this inner wall is arranged opposite to one side of the machine chamber 1 controlled to be opened by the side baffle 3; the elastic member 8 can preferably be a spring. The setting of the elastic member 8 keeps pushing the slider 7 downward, so that the slider 7 remains at the lowest position of the lifting stroke under the condition of no external force; when the slider 7 is at the lowest position and the connector 5 is in the first state, the distance between the lower end of the connector 5 and the inner bottom surface of the machine chamber 1 is set to be less than the protruding length of the filter element 2 installed on the connector 5, thus meeting the requirement of the pressing force received by the filter element 2 after installation.

[0039] As a preferred technical solution of this embodiment, a protruding portion 9 that penetrates through the inner wall of the machine chamber 1 is arranged on the slider 7, and the protruding portion 9 is connected to the connecting seat 4 through a fastener 26. Specifically, the protruding portion 9 extends vertically, preferably two, and is symmetrically arranged. A threaded hole is opened thereon, and a connecting hole corresponding to the threaded hole is arranged on the connecting seat 4 for passing through the fastener 26, and then the fastener 26 is threadedly connected and fastened to the threaded hole to realize the installation connection between the connecting seat 4 and the slider 7; the connector 5 does not block the connecting hole at any angle.

[0040] In the prior art, the connection between the connector 5 and the filter element 2 needs to be sealed. In the traditional way, a rubber sealing ring is arranged at the connection position between the two. However, during the installation process of the filter element 2, the sealing ring increases the installation resistance, and in the long-term practical use, the repeated extrusion and friction of the sealing ring will reduce the sealing effect. For this, the following embodiments are proposed to solve the problem.

[0041] In another embodiment proposed by the present invention, a groove 10 for inserting the filter element 2 is provided at the lower end of the connector 5. An annular groove 11 is provided on the inner wall of the groove 10, and an elastic sealing ring 12 is provided in the annular groove 11. A sealing groove 13 matching the elastic sealing ring 12 is provided at the upper end of the filter element 2. A clamping assembly is provided on the side wall of the connector 5. The clamping assembly controls the inner diameter of the elastic sealing ring 12 to decrease when the connector 5 is in the second state. Specifically, a protruding insertion part is provided at the upper end of the filter element 2, and the outer diameter of the insertion part matches the inner diameter of the groove 10; the inner diameter of the annular groove 11 is larger than the inner diameter of the groove 10; the inner diameter of the elastic sealing ring 12 can be adjusted, and the maximum value of the adjustment range matches the outer diameter of the insertion part; the sealing groove 13 is also annular. When the insertion part is correctly inserted into the groove 10, the sealing groove 13 is flush with the annular groove 11. The minimum value of the adjustable inner diameter range of the elastic sealing ring 12 matches the inner diameter of the sealing groove 13; the clamping assembly is trigger-type. When the connector 5 is in the second state, the inner diameter of the elastic sealing ring 12 is decreased to match the inner diameter of the sealing groove 13. When the connector 5 leaves the second state, the elastic sealing ring 12 expands its inner diameter under its own elasticity.

[0042] As a preferred technical solution of this embodiment, the clamping assembly includes a clamping member 14 movably disposed within a connection head 5. An elastic sealing ring 12 is provided with a break point, and on both outer sides of the two ends formed at the break point, there are extrusion portions 15 that are in wedge-shaped fit with the clamping member 14. One end of the clamping member 14 away from the elastic sealing ring 12 is provided with an abutting portion 16 that slidably penetrates the outer wall of the connection head 5. Specifically, on the inner wall of the concave ring groove 11, there is a chute extending towards the outer side of the connection head 5 and close to the connection seat 4. The clamping member 14 is movably disposed within the chute. On the side of the clamping member 14 close to the elastic sealing ring 12, there is a V-shaped groove, and the end of the extrusion portion 15 is kept disposed within the V-shaped groove; the break point on the elastic sealing ring 12 enables the two ends of the break point to remain separated by its own elastic force under the condition of no external force, and the inner diameter of the elastic sealing ring 12 itself thus expands. When the clamping member 14 approaches the center of the elastic sealing ring 12 to squeeze the two extrusion portions 15, the two ends of the break point of the elastic sealing ring 12 approach each other, that is, the inner diameter of the elastic sealing ring 12 itself shrinks. And when the two ends of the break point of the elastic sealing ring 12 abut against each other, the inner diameter of the elastic sealing ring 12 shrinks to the minimum and matches the inner diameter of the sealing groove 13; in addition, when the inner diameter of the elastic sealing ring 12 shrinks to the minimum, its outer diameter is still greater than the inner diameter of the groove 10, thereby keeping itself in transition between the concave ring groove 11 and the sealing groove 13 to achieve the sealing effect of partition; when the connection head 5 is in the second state, the abutting portion 16 abuts against the outer wall of the connection seat 4, thereby causing the clamping member 14 to approach the center of the elastic sealing ring 12. On the contrary, when the abutting portion 16 is not externally pushed, the elastic sealing ring 12 separates the two extrusion portions 15 by its own elastic force, and the extrusion portions 15 cause the clamping member 14 to move away from the center of the elastic sealing ring 12 through wedge-shaped extrusion, that is, the clamping member 14 drives the abutting portion 16 to extend more length outside the connection head 5. In the use of this technical solution, when the connection head 5 is in the second state, the elastic sealing ring 12 automatically remains in the state with the maximum inner diameter, and the abutting portion 16 extends the longest outside the outer wall of the connection head 5. Then, the filter element 2 can be conveniently unplugged or plugged on the connection head 5. When the filter element 2 is plugged on the connection head 5, the connection head 5 is switched from the second state to the first state, that is, the connection head 5 drives the abutting portion 16 to approach the surface of the connection seat 4. When the connection head 5 approaches the first state, the abutting portion 16 abuts against the surface of the connection seat 4, and the abutting portion 16 passively pushes the clamping member 14 towards the center of the elastic sealing ring 12. At this time, the clamping member 14 forces the two extrusion portions 15 to approach each other to reduce the inner diameter of the elastic sealing ring 12. Thus, the sealing effect and the fixing effect of the elastic sealing ring 12 are achieved.

[0043] In another embodiment proposed by the present invention, a shaft sleeve 17 is provided on the connection seat 4, and a shaft tube 18 rotatably connected to the shaft sleeve 17 is provided on the connection head 5. Specifically, the two ends of the shaft tube 18 respectively correspond to the inlet and outlet ends of the internal water flow channel of the connection head 5; the axis of the shaft tube 18 is arranged parallel to the connection seat 4.

[0044] As a preferred technical solution of this embodiment, a conduit 19 is inserted into the shaft tube 18, and each conduit 19 is arranged to be connected to a filter pipeline. Specifically, a sleeve 17 is sleeved outside the shaft tube 18 without affecting the connection between the shaft tube 18 and the conduit 19; the end of the conduit 19 is rotatably inserted into the shaft tube 18.

[0045] As a preferred technical solution of this embodiment, a hollow groove 20 for the conduit 19 to pass through is provided in the machine chamber 1. A pressing member 21 is movably arranged on one side of the hollow groove 20. The pressing member 21 and the slider 7 are linked by a linkage assembly. When the slider 7 is at the lowest position of its moving stroke in the movable groove 6, the pressing member 21 remains inserted into the hollow groove 20 to press the conduit 19. Specifically, the hollow groove 20 is vertically arranged, and its inner diameter matches the outer diameter of the conduit 19; a slot for the pressing member 21 to move is provided on the inner wall of the hollow groove 20; the pressing member 21 is in a sheet shape; the pipe wall of the conduit 19 is elastically arranged, that is, the conduit 19 can be deformed and clamped by external pressure to stop conduction, and after the external pressure is removed, the conduit 19 elastically restores its conduction ability; the linkage between the pressing member 21 and the slider 7 realizes that when the slider 7 is at the lowest position of its moving stroke in the movable groove 6, the pressing member 21 presses the conduit 19, that is, when the filter element 2 is not installed on the connector 5, the conduit 19 stops conduction. Thus, it can be avoided that the connector 5 leaks liquid and causes pollution during the replacement process of the filter element 2.

[0046] As a preferred technical solution of this embodiment, the linkage assembly includes a sliding member 22 fixedly connected to the pressing member 21. A sliding groove 23 matching the sliding member 22 is provided in the machine chamber 1. A ramp 24 is fixedly arranged on the sliding member 22. A pressing block 25 that is wedge-shapedly matched with the ramp 24 is fixedly arranged at the lower end of the slider 7. Specifically, usually two conduits 19 are respectively connected to both sides of the same connector 5, and a pair of corresponding pressing members 21 are provided. The sliding member 22 can connect the pair of pressing members 21 together; the sliding member 22 slides horizontally in the sliding groove 23 and is perpendicular to the extending direction of the conduit 19; the inclined surface of the ramp 24 is arranged on the side away from the conduit 19. Thus, when the slider 7 drives the pressing block 25 to descend, under the wedge-shaped extrusion and push between the pressing block 25 and the ramp 24, the sliding member 22 drives the pressing member 21 to approach the conduit 19. In the actual use of this technical solution, when the filter element 2 is removed from the connector 5 and the connector 5 is not subjected to external force, the connecting seat 4 automatically descends to the lowest position. Correspondingly, the slider 7 is driven by the elastic member 8 to descend to the lowest position. The slider 7 drives the pressing block 25 to descend, causing wedge-shaped extrusion and push between the pressing block 25 and the ramp 24, that is, the pressing block 25 drives the pressing member 21 to press the conduit 19 through the sliding member 22, realizing the open circuit and stop conduction of the conduit 19; after the filter element 2 is installed, the connecting seat 4 rises a certain height, causing the slider 7 to drive the pressing block 25 to rise a certain height. The pressing block 25 does not press the ramp 24, and the conduit 19 expands again under its own elastic force to conduct again.

[0047] Only some exemplary embodiments of the present invention have been described above by way of illustration. Without doubt, for those of ordinary skill in the art, various different ways can be used to modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A multi-stage filtration tabletop water purifier, comprising a machine compartment (1) and a filter element (2) installed inside the machine compartment (1), and a detachable side baffle (3) is arranged on one side of the machine compartment (1), characterized in that, Further included are: A connecting seat (4), which is elastically and movably connected inside the machine chamber (1); A connecting head (5), which is hinged to the connecting seat (4), and has a first state arranged vertically during the rotation stroke and a second state in which the lower end tilts outwards in the direction away from the side baffle (3) after being disassembled. In the first state of the connecting head (5), the filter element (2) is connected to the lower end of the connecting head (5) and is limited in the machine chamber (1) under the pressing force. In the second state of the connecting head (5), the filter element (2) is movably and detachably connected to the connecting head (5); A groove (10) for inserting the filter element (2) is provided at the lower end of the connecting head (5). An annular groove (11) is provided on the inner wall of the groove (10). An elastic sealing ring (12) is provided in the annular groove (11). A sealing groove (13) matching the elastic sealing ring (12) is provided at the upper end of the filter element (2). A clamping assembly is provided on the side wall of the connecting head (5), and the clamping assembly controls the inner diameter of the elastic sealing ring (12) to decrease when the connecting head (5) is in the second state; The clamping assembly includes a clamping member (14) movably arranged inside the connecting head (5). A break point is provided on the elastic sealing ring (12), and extrusion parts (15) wedge-fitted with the clamping member (14) are provided on the outer sides of both ends formed at the break point. An abutting part (16) that slidably penetrates the outer side wall of the connecting head (5) is provided at one end of the clamping member (14) away from the elastic sealing ring (12).

2. The multi-stage filtration tabletop water purifier according to claim 1, wherein An activity groove (6) is provided on the inner wall of the machine chamber (1). A slider (7) is arranged to move up and down in the activity groove (6). An elastic member (8) is provided at the upper end of the slider (7). The connecting seat (4) is connected to the slider (7).

3. The multi-stage filtration tabletop water purifier according to claim 2, wherein, A convex part (9) that movably penetrates the inner wall of the machine chamber (1) is provided on the slider (7). The convex part (9) is connected to the connecting seat (4) through a fastener (26).

4. The multi-stage filtration tabletop water purifier according to claim 2, characterized in that, A bushing (17) is provided on the connecting seat (4). A shaft tube (18) rotatably connected to the bushing (17) is provided on the connecting head (5).

5. The multi-stage filtration tabletop water purifier according to claim 4, characterized in that, A conduit (19) is inserted into the shaft tube (18), and each conduit (19) is arranged to be connected to a filter pipeline.

6. The multi-stage filtration tabletop water purifier according to claim 5, wherein, A hollow groove (20) for the conduit (19) to pass through is provided inside the machine chamber (1). An extrusion member (21) is movably provided on one side of the hollow groove (20). The extrusion member (21) and the slider (7) are linked through a linkage assembly. When the slider (7) is at the lowest position of the activity stroke in the activity groove (6), the extrusion member (21) remains inserted into the hollow groove (20) to press the conduit (19).

7. The multi-stage filtration tabletop water purifier according to claim 6, wherein, The linkage assembly includes a sliding member (22) fixedly connected to the extrusion member (21). A sliding groove (23) matching the sliding member (22) is provided inside the machine chamber (1). A ramp body (24) fixedly provided on the sliding member (22), and a pressing block (25) wedge-fitted with the ramp body (24) is fixedly provided at the lower end of the slider (7).

8. The multi-stage filtering tabletop water purifier according to claim 6, characterized in that, The pipe wall of the conduit (19) is elastically arranged.

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