Desktop water purifier

Abstract

The present invention relates to the technical field of water purification equipment, and specifically to a desktop water purification machine, comprising: a bracket; a body, which is sleeved on the outside of the bracket and is provided with a clean water tank installation position on the body; a waterway plate, on which a waterway is formed, and the waterway plate is connected to the bracket; a clean water tank, which is detachably arranged on the clean water tank installation position, and the clean water tank has a water outlet, and a first valve core assembly is provided at the water outlet, and the first valve core assembly has a first connecting position that connects the inner and outer sides of the water outlet and a sealing position that seals the water outlet; an adapter, which is connected to the bracket, and the adapter has a flow channel structure, and the flow channel structure includes a first interface suitable for connecting to the clean water tank and a second interface for connecting to the waterway, and a second valve core assembly is provided in the adapter, and the second valve core assembly has an open position that connects the first interface and the second interface and a closed position that disconnects the first interface and the second interface.

Description

Technical Field

[0001] The present invention relates to the technical field of beverage purifier equipment, and in particular to a desktop beverage purifier. Background Art

[0002] As people's living standards gradually improve, the health of drinking water is receiving increasing attention. Because traditional water dispensers lack water purification functions, desktop water purifiers have gradually become one of the most important household appliances in our lives. Compared to water dispensers, desktop water purifiers have the additional function of water purification, adding a water purification tank to store pure water. The water in the water purification tank is heated by a heating element before being released for drinking. Existing desktop water purifiers have an external water purification tank, which can be directly removed, providing convenient and quick access to large quantities of pure water at room temperature. However, existing water purification tank adapters mostly use water pipes and joints, which are complicated to install and have low assembly efficiency. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the water tank adapter of the desktop water purifier mostly uses water pipes and joints, resulting in low assembly, thereby providing a desktop water purifier that can reduce the use of water pipes and joints.

[0004] In order to solve the above technical problems, the present invention provides a desktop water purifier, comprising: a bracket; a body, which is mounted outside the bracket, and a clean water tank installation position is provided on the body; a waterway plate, on which a waterway is formed, and the waterway plate is connected to the bracket; a clean water tank, which is detachably arranged on the clean water tank installation position, the clean water tank having a water outlet, a first valve core assembly is provided at the water outlet, the first valve core assembly has a first connecting position for connecting the inner and outer sides of the water outlet, and a sealing position for sealing the water outlet; an adapter, which is connected to the bracket, the adapter having a flow channel structure, the flow channel structure including a first interface suitable for connecting to the clean water tank and a second interface for connecting to the waterway, a second valve core assembly is provided in the adapter, the second valve core assembly has an open position for connecting the first interface and the second interface, and a closed position for disconnecting the first interface and the second interface.

[0005] Optionally, the first valve core assembly includes a first valve core, a first elastic member and a first retaining ring. The first valve core is movably installed at the water outlet. The first retaining ring is connected to the valve core. When the first valve core is in the sealing position, the first retaining ring seals the water outlet. The first elastic member is connected between the first valve core and the clean water tank.

[0006] Optionally, the second valve core assembly includes a second valve core, a second elastic member and a first sealing ring. When the clean water tank is installed on the clean water tank installation position, the second valve core is coaxial with the first valve core and offsets against the first valve core. The second elastic member is connected between the second valve core and the adapter. The first sealing ring is sleeved on the outside of the second valve core, enabling the second valve core to be sealed and connected to the structure.

[0007] Optionally, the flow channel structure includes a first flow channel and a second flow channel perpendicular to the first flow channel, the first interface is located at the end of the first flow channel, the second interface is located at the end of the second flow channel, and the second valve core assembly is arranged in the first flow channel.

[0008] Optionally, the adapter includes a main structure and a cover plate, the first flow channel and the second flow channel are formed on the main structure, the first flow channel and the second flow channel are perpendicular to each other, the first flow channel runs through the main structure, the cover plate blocks the end of the first flow channel away from the installation position of the clean water tank, the second valve core is arranged in the first flow channel, and the second elastic member is connected between the second valve core and the cover plate.

[0009] Optionally, a sealing column is provided on the cover plate, and the sealing column is inserted into the first flow channel and sealedly connected to the first flow channel.

[0010] Optionally, the main structure and the cover plate are positioned and connected via a positioning structure.

[0011] Optionally, the positioning structure includes a first positioning column provided on the main structure and a first positioning hole provided on the cover plate and suitable for the first positioning column to pass through.

[0012] Optionally, the cover plate is connected to the main structure by snap-fitting.

[0013] Optionally, a micro switch placement position is provided on the main structure, a micro switch is placed in the micro switch placement position, the cover plate cooperates with the main structure to fix the micro switch, and when the clean water tank is installed on the clean water tank placement position, the contacts of the micro switch are in contact with the clean water tank.

[0014] Optionally, the bracket is provided with a second positioning hole adapted to the first positioning column.

[0015] Optionally, the bracket is provided with screw columns or screw holes, the main structure is provided with corresponding screw holes or screw columns, and the main structure is connected to the bracket via screws.

[0016] Optionally, the installation position of the clean water tank is an installation cavity with a side opening, and a notch is provided on the cavity wall of the installation cavity opposite to the side opening, and the adapter is clamped in the notch.

[0017] The technical solution of the present invention has the following advantages:

[0018] In the desktop water purifier provided by the present invention, when the clean water tank is installed on the clean water tank installation position on the machine body, the first valve core assembly cooperates with the second valve core assembly to move the first valve core assembly to the connecting position and the second valve core assembly to the open position. At this time, the water in the clean water tank can flow into the flow channel structure of the adapter through the water outlet and the first interface, and then flow into the water channel of the waterway plate through the second interface. When the clean water tank is removed, the first valve core assembly is reset to the sealing position, and the water in the clean water tank will not flow out through the water outlet. The second valve core assembly is reset to the closed position, and the first interface and the second interface are disconnected, which can prevent the water in the waterway plate from flowing back through the flow channel structure. By setting the adapter, the water channel transfer, sealing and non-return functions of the clean water tank are realized, which can reduce the use of water pipes and joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A cross-sectional view of a tabletop water purifier provided in an embodiment of the present invention when the second valve core assembly is in an open position;

[0021] Figure 2 for Figure 1 An enlarged view of point A is shown;

[0022] Figure 3 An exploded view of a tabletop water purifier provided in an embodiment of the present invention;

[0023] Figure 4 This is the exploded view of the clean water tank;

[0024] Figure 5 is a cross-sectional view of the clean water tank;

[0025] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0026] Figure 7 is a cross-sectional view of the adapter;

[0027] Figure 8 This is an exploded view of the adapter;

[0028] Figure 9 A top view of the main structure;

[0029] Figure 10 It is a cross-sectional view of the main structure;

[0030] Figure 11 is a top view of the cover;

[0031] Figure 12 It is the left view of the cover;

[0032] Figure 13 A cross-sectional view of a tabletop water purifier provided in an embodiment of the present invention when the second valve core assembly is in a closed position;

[0033] Figure 14 for Figure 13 Enlarged view of point B in the middle.

[0034] Description of reference numerals:

[0035] 1. Bracket; 2. Body; 201. Water tank installation position; 202. Notch; 3. Waterway plate; 301. Waterway; 4. Water tank; 401. Concave cavity; 4010. Water outlet; 4011. Opening; 402. Handle; 403. Water tank cover; 5. Adapter; 50. Main structure; 501. First flow channel; 5011. First flow section; 5012. Second flow section; 5013. Step surface; 502. Second flow channel; 503. First positioning column; 504. Buckle position; 505. Micro switch release Position; 506, screw hole; 507, sealing groove; 51, cover plate; 511, sealing column; 512, second sealing ring; 513, first positioning hole; 514, snap; 6, first valve core assembly; 601, first valve core; 602, first elastic member; 603, first retaining ring; 7, second valve core assembly; 701, second valve core; 7011, boss; 702, second elastic member; 703, first sealing ring; 8, third sealing ring; 9, micro switch; 901, contact; 10, fourth sealing ring. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] Example

[0041] As people's living standards gradually improve, the health of drinking water is receiving increasing attention. Because traditional water dispensers lack water purification functions, desktop water purifiers have gradually become one of the most important household appliances in our lives. Compared to water dispensers, desktop water purifiers have the additional function of water purification, adding a water purification tank to store pure water. The water in the water purification tank is heated by a heating element before being released for drinking. Existing desktop water purifiers have an external water purification tank, which can be directly removed, providing convenient and quick access to large quantities of pure water at room temperature. However, existing water purification tank adapters mostly use water pipes and joints, which are complicated to install and have low assembly efficiency.

[0042] To this end, this embodiment provides a desktop water purifier.

[0043] In one embodiment, Figures 1 to 14 As shown, the desktop water purifier includes a bracket 1, a body 2, a water channel plate 3, a clean water tank 4 and an adapter 5.

[0044] Among them, the bracket 1 is used to fix the heat exchanger, heating element and other structures of the desktop water purifier; the body 2 is mounted on the bracket 1, and a clean water tank installation position 201 is provided on the body 2; a water channel 301 is formed on the water channel plate 3, and the water channel plate 3 is connected to the bracket 1; the clean water tank 4 is detachably arranged on the clean water tank installation position 201, and the clean water tank 4 has a water outlet 4010, and a first valve core assembly 6 is provided at the water outlet 4010, and the first valve core assembly 6 has a first connecting position for connecting the inner and outer sides of the water outlet 4010 and a sealing position for sealing the water outlet 4010; the adapter 5 is connected to the bracket 1, and the adapter 5 has a flow channel structure, and the flow channel structure includes a first interface suitable for connecting to the clean water tank 4 and a second interface for connecting to the water channel 301, and a second valve core assembly 7 is provided in the adapter 5, and the second valve core assembly 7 has an open position for connecting the first interface and the second interface and a closed position for disconnecting the first interface and the second interface.

[0045] In this embodiment, when the clean water tank 4 is installed on the clean water tank installation position 201 on the fuselage 2, the first valve core assembly 6 cooperates with the second valve core assembly 7 to move the first valve core assembly 6 to the connected position and the second valve core assembly 7 to the open position. At this time, the water in the clean water tank 4 can flow into the flow channel structure of the adapter 5 through the water outlet 4010 and the first interface, and then flow into the water channel 301 of the waterway plate 3 through the second interface. When the clean water tank 4 is removed, the first valve core assembly 6 is reset to the sealed position, and the water in the clean water tank 4 will not flow out through the water outlet 4010. The second valve core assembly 7 is reset to the closed position, and the first interface and the second interface are disconnected, which can prevent the water in the waterway plate 3 from flowing back through the flow channel interface. By setting the adapter 5, the waterway transfer, sealing and non-return functions of the clean water tank 4 are realized, which can reduce the use of water pipes and joints.

[0046] Specifically, the adapter 5 is connected to the bracket 1 by screws, and a gap-avoiding portion that matches the shape of the adapter 5 is provided on the fuselage 2. After the adapter 5 is connected to the bracket 1, it is embedded in the gap-avoiding portion to fill the gap.

[0047] In one specific embodiment, the flow channel structure includes a first flow channel 501 and a second flow channel 502 perpendicular to the first flow channel 501. The first interface is located at the end of the first flow channel 501, the second interface is located at the end of the second flow channel 502, and the second valve core assembly 7 is disposed in the first flow channel. In this embodiment, when the second valve core assembly 7 is in the open position, the first flow channel 501 and the second flow channel 502 are connected. When the second valve core assembly 7 is in the closed position, the first flow channel 501 and the second flow channel 502 are disconnected. The arrangement of the first flow channel 501 and the second flow channel 502 facilitates the installation of the second valve core assembly 7. In an alternative embodiment, the flow channel structure includes only one flow channel or includes a greater number of flow channels.

[0048] Specifically in one embodiment, Figure 8 As shown, the second flow channel 502 is sealedly connected to the water channel 301 in the water channel plate 3 via the third sealing ring 8 .

[0049] On the basis of the above embodiment, in a preferred embodiment, as Figures 4 to 6 As shown, the first valve core assembly 6 includes a first valve core 601, a first elastic member 602, and a first retaining ring 603. The first valve core 601 is movably mounted at the water outlet 4010. The first retaining ring 603 is connected to the valve core. When the first valve core 601 is in the sealing position, the first retaining ring 603 seals the water outlet 4010. The first elastic member 602 is connected between the first valve core 601 and the clean water tank 4. In this embodiment, when the clean water tank 4 is installed in the clean water tank mounting position 201 on the body 2, the second valve core assembly 7 applies a force to the first valve core 601, causing it to move. The first retaining ring 603 moves away from the water outlet 4010, compressing the first elastic member 602. When the clean water tank 4 is removed, the first valve core 601 loses the pressure of the second valve core assembly 7. Under the restoring force of the first elastic member 602, the first valve core 601 returns to its original position, and the first retaining ring 603 seals the water outlet 4010.

[0050] Specifically in one embodiment, the first elastic member 602 is a first spring.

[0051] On the basis of the above embodiment, in a preferred embodiment, as Figure 7 As shown, the second valve core assembly 7 includes a second valve core 701, a second elastic member 702 and a first sealing ring 703. When the clean water tank 4 is installed on the clean water tank installation position 201, the second valve core 701 is coaxial with the first valve core 601 and offsets the first valve core 601. The second elastic member 702 is connected between the second valve core 701 and the adapter 5. The first sealing ring 703 is sleeved on the outside of the second valve core 701, which can enable the second valve core 701 to be sealed and connected to the flow channel structure. Specifically, the second valve core 701 is located in the first flow channel 501, and the first sealing ring 703 can seal the second valve core 701 with the first flow channel 501. When the clean water tank 4 is installed on the clean water tank installation position 201, the first valve core 601 interacts with the second valve core 701, and the second valve core 701 moves to the right in the first flow channel 501 and compresses the second elastic member 702. The first sealing ring 703 is not sealed with the first flow channel 501, and the water in the clean water tank 4 can flow into the second flow channel 502 through the first flow channel 501. When the clean water tank 4 is removed, the second valve core 701 loses the resistance pressure of the first valve core 601. Under the reset force of the second elastic member 702, the second valve core 701 is reset, and the first sealing ring 703 is sealed with the first flow channel 501.

[0052] like Figure 7As shown, the first flow channel 501 includes a first flow section 5011 and a second flow section 5012. The inner diameter of the first flow section 5011 is smaller than the inner diameter of the second flow section 5012. In the direction gradually away from the clean water tank installation position 201, the inner diameter of the second flow section 5012 gradually increases. A step surface 5013 is formed between the first flow section 5011 and the second flow section 5012. A boss 7011 is formed on the outside of the second valve core 701. The boss 7011 is provided with an annular groove. The first sealing ring 703 is installed in the annular groove. The boss 7011 is located in the second flow section 5012. When the clean water tank 4 is disassembled, the reset force of the second elastic member 702 causes the boss 7011 or the first sealing ring 703 to rest on the step surface 5013, which not only achieves sealing, but also limits the position of the second valve core 701.

[0053] Specifically in one embodiment, the second elastic member 702 is a second spring.

[0054] Based on the above embodiment, in a preferred embodiment, the adapter 5 includes a main structure 50 and a cover plate 51, the first flow channel 501 and the second flow channel 502 are formed on the main structure 50, the first flow channel 501 and the second flow channel 502 are perpendicular, the first flow channel 501 passes through the main structure 50, the cover plate 51 blocks the end of the first flow channel 501 away from the clean water tank installation position 201, the second valve core 701 is arranged in the first flow channel 501, and the second elastic member 702 is connected between the second valve core 701 and the cover plate 51. In this embodiment, a main structure 50 and a cover plate 51 are provided, and the main structure 50 and the cover plate 51 are processed separately during processing. Since the first flow channel 501 runs through the main structure 50, it is convenient to process the first flow channel 501 and the second flow channel 502 on the main structure 50. At the same time, the second elastic member 702 is connected between the second valve core 701 and the cover plate 51. During installation, it is only necessary to put the second elastic member 702 outside the second valve core 701. After the cover plate 51 is fixedly connected to the main structure 50, the second elastic member 702 can be against the cover plate 51, thereby facilitating the installation of the second valve core assembly 7.

[0055] like Figure 2 、 Figure 10 and Figure 14 As shown, a sealing groove 507 is formed on the main structure 50 at a position outside the first flow channel 501, and the fourth sealing ring 10 is arranged in the sealing groove 507. A concave cavity 401 is formed on the side wall of the clean water tank 4 near the bottom. The concave cavity 401 has an opening 4011, and the water outlet 4010 is located on the cavity wall of the concave cavity 401 opposite to the opening 4011. When the clean water tank 4 is installed in place, the sealing groove 507 on the adapter 5 is located in the concave cavity 401 and is sealed with the concave cavity 401 through the fourth sealing ring 10, thereby realizing a sealed connection with the clean water tank 4.

[0056] Based on the above embodiment, in a preferred embodiment, a sealing post 511 is provided on the cover plate 51. The sealing post 511 is inserted into the first flow channel 501 and is sealed to the first flow channel 501. In this embodiment, the provision of the sealing post 511 not only seals the first flow channel 501 but also serves to position the cover plate 51.

[0057] Specifically in one embodiment, the sealing column 511 is provided with a second sealing ring 512 on its outer sleeve, and is sealed and connected to the first flow channel 501 through the second sealing ring 512 .

[0058] Specifically, the sealing column 511 is a hollow column, one end of the second elastic member 702 is sleeved outside the second valve core 701, and the other end is located inside the sealing column 511, which can effectively position the position of the second elastic member 702.

[0059] Based on the above embodiment, in a preferred embodiment, the main structure 50 and the cover plate 51 are positioned and connected by a positioning structure. In this embodiment, the positioning structure can position the connection between the main structure 50 and the cover plate 51, thereby improving assembly efficiency.

[0060] Based on the above embodiment, in a preferred embodiment, the positioning structure includes a first positioning post 503 provided on the main structure 50 and a first positioning hole 513 provided on the cover plate 51 and adapted for the first positioning post 503 to pass through. In this embodiment, the provision of the first positioning post 503 and the second positioning hole enables positioning of the connection between the main structure 50 and the cover plate 51, thereby improving assembly efficiency. In an alternative embodiment, the first positioning hole may be provided on the main structure 50, and the first positioning post may be provided on the cover plate 51.

[0061] On the basis of the above embodiment, in a preferred embodiment, the cover plate 51 is connected to the main structure 50 via a buckle 514. In this embodiment, the connection between the cover plate 51 and the main structure 50 is simple and convenient.

[0062] Specifically in one embodiment, a buckle 514 is provided on the cover plate 51 , a buckle position 504 is provided on the main structure 50 , and the buckle 514 is snapped into the buckle position 504 .

[0063] Based on the above embodiment, in a preferred embodiment, a micro switch placement position 505 is provided on the main structure 50, a micro switch 9 is placed in the micro switch placement position 505, and the cover plate 51 cooperates with the main structure 50 to fix the micro switch 9. When the clean water tank 4 is installed in the clean water tank 4 placement position, the contact 901 of the micro switch 9 contacts the clean water tank 4. In this embodiment, the provision of the micro switch 9 can detect whether the clean water tank 4 is installed in place.

[0064] Specifically, the bottom of the micro switch placement position 505 has a through hole suitable for the contact 901 of the micro switch 9 to pass through, and the shape of the micro switch placement position 505 is consistent with the shape of the micro switch 9.

[0065] Based on the above embodiment, in a preferred embodiment, the bracket 1 is provided with a second positioning hole adapted to the first positioning post 503. In this embodiment, the first positioning post 503 cooperates with both the first positioning hole 513 and the second positioning hole. The provision of the first positioning post 503 and the second positioning hole can position the assembly of the main structure 50 and the bracket 1, thereby improving assembly efficiency.

[0066] Based on the above embodiment, in a preferred embodiment, the bracket 1 is provided with screw posts or screw holes, and the main structure 50 is provided with corresponding screw holes 506 or screw posts, and the main structure 50 is connected to the bracket 1 by screws. In this embodiment, the main structure 50 and the bracket 1 are connected by screws, which can ensure a reliable connection between the two. At the same time, the provision of the screw posts and screw holes 506 can improve assembly efficiency.

[0067] Based on the above embodiment, in a preferred embodiment, the water purification tank installation position 201 is an installation cavity having a side opening 4011. A notch 202 is provided on the cavity wall of the installation cavity opposite the side opening 4011, and the adapter 5 is locked in the notch 202. In this embodiment, the water purification tank 4 is installed and removed from the side of the fuselage 2, which is more convenient for manual operation. By providing the notch 202 on the cavity wall of the installation cavity and locking the adapter 5 in the notch 202, the appearance of the fuselage 2 can be maintained consistent after the water purification tank 4 is removed.

[0068] On the basis of the above embodiment, in a preferred embodiment, a handle 402 is provided on the clean water tank 4 to facilitate taking out the clean water tank 4 .

[0069] On the basis of the above embodiment, in a preferred embodiment, a water tank cover 403 is detachably connected to the top of the clean water tank 4, so as to facilitate adding water to the clean water tank 4 or pouring out the water in the clean water tank 4 for direct use.

[0070] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A desktop water purifier, characterized in that: include: Bracket (1); A body (2) is sleeved outside the bracket (1), and a clean water tank installation position (201) is provided on the body (2); a waterway plate (3) having a waterway (301) formed thereon, the waterway plate (3) being connected to the bracket (1); A clean water tank (4) is detachably arranged on the clean water tank installation position (201), the clean water tank (4) having a water outlet (4010), a first valve core assembly (6) being provided at the water outlet (4010), the first valve core assembly (6) having a first communication position for connecting the inside and outside of the water outlet (4010) and a sealing position for sealing the water outlet (4010); An adapter (5) is connected to the bracket (1), and the adapter (5) has a flow channel structure, the flow channel structure including a first interface suitable for connecting to the clean water tank (4) and a second interface connected to the waterway (301), a second valve core assembly (7) is provided in the adapter (5), the second valve core assembly (7) has an open position for connecting the first interface and the second interface, and a closed position for disconnecting the first interface and the second interface; the second valve core assembly (7) includes a second valve core (701) and a second elastic member (702), the flow channel structure includes a first flow channel (501) and a second flow channel (502) perpendicular to the first flow channel (501), the first interface is located at the end of the first flow channel (501), and the second valve core assembly (7) has an open position for connecting the first interface and the second interface, and a closed position for disconnecting the first interface and the second interface; the second valve core assembly (7) includes a second valve core (701) and a second elastic member (702), the flow channel structure includes a first flow channel (501) and a second flow channel (502) perpendicular to the first flow channel (501), the first interface is located at the end of the first flow channel (501), and the second valve core assembly (7) has an open position for connecting the first interface and the second interface, and a closed position for disconnecting the first interface and the second interface. The second interface is located at the end of the second flow channel (502), the second valve core assembly is arranged in the first flow channel, the adapter (5) includes a main structure (50) and a cover plate (51), the first flow channel (501) and the second flow channel (502) are formed on the main structure (50), the first flow channel (501) and the second flow channel (502) are perpendicular to each other, the first flow channel (501) passes through the main structure (50), the cover plate (51) blocks the end of the first flow channel (501) away from the clean water tank installation position (201), the second valve core (701) is arranged in the first flow channel (501), and the second elastic member (702) is connected between the second valve core (701) and the cover plate (51).

2. The tabletop water purifier according to claim 1, characterized in that: The first valve core assembly (6) comprises a first valve core (601), a first elastic member (602) and a first retaining ring (603); the first valve core (601) is movably mounted at the water outlet (4010); the first retaining ring (603) is connected to the valve core; when the first valve core (601) is in the sealing position, the first retaining ring (603) seals the water outlet (4010); and the first elastic member (602) is connected between the first valve core (601) and the clean water tank (4).

3. The tabletop water purifier according to claim 2, characterized in that: The second valve core assembly (7) includes a first sealing ring (703). When the clean water tank (4) is installed on the clean water tank installation position (201), the second valve core (701) is coaxial with the first valve core (601) and is offset against the first valve core (601). The second elastic member (702) is connected between the second valve core (701) and the adapter (5). The first sealing ring (703) is sleeved outside the second valve core (701), enabling the second valve core (701) to be sealed and connected to the flow channel structure.

4. The tabletop water purifier according to claim 3, characterized in that: A sealing column (511) is provided on the cover plate (51), and the sealing column (511) is inserted into the first flow channel (501) and is sealed and connected to the first flow channel (501).

5. The tabletop water purifier according to claim 3, characterized in that: The main structure (50) and the cover plate (51) are positioned and connected via a positioning structure.

6. The tabletop water purifier according to claim 5, characterized in that: The positioning structure comprises a first positioning column (503) provided on the main structure (50) and a first positioning hole (513) provided on the cover plate (51) and suitable for the first positioning column (503) to pass through.

7. The tabletop water purifier according to claim 3, characterized in that: The cover plate (51) is connected to the main structure (50) via a buckle (514).

8. The tabletop water purifier according to claim 3, characterized in that: A micro switch placement position (505) is provided on the main structure (50), a micro switch (9) is placed in the micro switch placement position (505), the cover plate (51) cooperates with the main structure (50) to fix the micro switch (9), and when the clean water tank (4) is installed on the clean water tank (4) placement position, the contact (901) of the micro switch (9) contacts the clean water tank (4).

9. The tabletop water purifier according to claim 6, characterized in that: The bracket (1) is provided with a second positioning hole adapted to the first positioning column (503).

10. The tabletop water purifier according to claim 9, characterized in that: The bracket (1) is provided with a screw column or a screw hole, and the main structure (50) is provided with a corresponding screw hole (506) or a screw column, and the main structure (50) and the bracket (1) are connected by screws.

11. The tabletop water purifier according to any one of claims 1 to 10, characterized in that: The clean water tank installation position (201) is an installation cavity with a side opening (4011), a notch (202) is provided on the cavity wall of the installation cavity opposite to the side opening (4011), and the adapter (5) is clamped in the notch (202).

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