Water purifier

Abstract

The invention relates to a water purifier. The water purifier comprises a communicating vessel, a first valve assembly and a water purifying tank; the communicating vessel is provided with a first connecting pipe communicated with an inner cavity of the communicating vessel, and the water purifying tank is provided with a second connecting seat communicated with an inner cavity of the water purifying tank; the first valve assembly comprises a first valve element located in the first connecting pipe and a sealing ring. The first valve element is used for correspondingly opening or closing the first valve assembly when the second connecting base is inserted into or pulled out of the first connecting pipe. One end of the sealing ring is matched with the first connecting pipe in a sealing mode, a matching portion is arranged at the other end of the sealing ring and movably arranged on the first valve element in a sleeving mode, the first connecting pipe, the first valve element and the sealing ring jointly form a containing space, and the containing space is communicated with an inner cavity of the communicating vessel when the first valve assembly is opened. The water purifier provided by the invention can avoid water leakage when the water purification tank is taken.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and particularly to a water purifier. Background Art

[0002] With the improvement of people's living standards, more and more people pursue a high-quality life, and the water purifier is undoubtedly one of the best choices. In the water purifier with an external water purification tank in the related art, the water inlet of the water purification tank is detachably connected to the water purification supply interfaces such as the communicating vessel in the water purifier by a side plug-in and matching method. However, when the user performs the plugging and unplugging operation on the water purification tank, water leakage often occurs at the positions of the water inlet of the water purification tank and the water purification supply interface, resulting in a poor user experience. Summary of the Invention

[0003] Based on this, it is necessary to provide a water purifier that can avoid water leakage when taking the water purification tank and improve the user experience.

[0004] The water purifier provided by the embodiment of the present application includes a communicating vessel, a first valve assembly, and a water purification tank;

[0005] The communicating vessel is provided with a first connecting pipe communicating with the inner cavity of the communicating vessel, and the water purification tank is provided with a second connecting seat communicating with the inner cavity of the water purification tank;

[0006] The first valve assembly includes a first valve core and a sealing ring located in the first connecting pipe. The first valve core is used to open or close the first valve assembly correspondingly when the second connecting seat is inserted into or pulled out of the first connecting pipe;

[0007] One end of the sealing ring is hermetically fitted to the first connecting pipe, and the other end is provided with a fitting portion. The fitting portion is movably sleeved on the first valve core. The first connecting pipe, the first valve core, and the sealing ring together form a receiving space, and the receiving space communicates with the inner cavity of the communicating vessel when the first valve assembly is opened.

[0008] In one embodiment, a blocking member is provided on the first valve core, and the blocking member is used for blocking and fitting with the fitting portion to seal the receiving space.

[0009] In one embodiment, the water purifier further includes a second valve assembly disposed in the second connecting seat;

[0010] The second valve assembly includes a driving member. When the second connecting seat is separated from the first connecting pipe, the blocking member and the fitting portion are blocked and fitted;

[0011] When the second connecting seat is inserted into the first connecting pipe, the driving member abuts against the fitting portion and drives the fitting portion to disengage from the blocking member, so that the second connecting seat communicates with the inner cavity of the communicating vessel through the receiving space.

[0012] In one embodiment, the sealing ring is configured as an elastic member, and the fitting portion can move along a first direction under the drive of the driving member, or elastically reset along a second direction opposite to the first direction, so that the volume of the accommodating space becomes smaller or larger. The first direction is the insertion direction of the second connection seat into the first connection pipe.

[0013] In one embodiment, the second valve assembly includes a second valve seat and a second valve core penetrating through the second valve seat. The second valve seat is connected within the second connection seat, and the second valve core can move relative to the second connection seat in the second direction, or elastically reset in a first direction opposite to the second direction to open or close the valve hole of the second valve seat; the second valve seat forms the driving member.

[0014] The second direction is the pulling-out direction of the second connection seat relative to the first connection pipe.

[0015] In one embodiment, the setting position of the second valve seat corresponds to the setting position of the fitting portion, and the setting position of the second valve core corresponds to the setting position of the first valve core. When the second connection seat is located in the first connection pipe, the state where the second valve seat just contacts the fitting portion is defined as the initial state. In the initial state, there is a gap between the first valve core and the second valve core, or the first valve core and the second valve core are in contact with each other and do not transmit force to each other.

[0016] In one embodiment, the fitting portion is in clearance fit with the first valve core, and the blocking member blocks the end face of the fitting portion facing the second valve core.

[0017] In one embodiment, the first valve core includes a first valve core body and a plurality of first ribs. The plurality of first ribs are arranged at intervals and around the outer peripheral surface of the first valve core body. The blocking member is provided at the end of the first valve core body facing away from the inner cavity of the communicating vessel and is connected to each first rib.

[0018] In one embodiment, the first valve core includes a first valve core body and a plurality of first ribs. The plurality of first ribs are arranged at intervals and around the outer peripheral surface of the first valve core body;

[0019] The fitting portion is configured as an annular member and sleeved on the outer peripheral side of each first rib, and is in clearance fit with the outer peripheral side of each first rib. The inner diameter of the fitting portion is less than 7 mm.

[0020] In one embodiment, both the fitting portion and the blocking member are configured as annular members.

[0021] In one embodiment, the blocking member is configured as a disc-shaped structure, and the outer diameter of the blocking member is greater than the inner diameter of the fitting portion.

[0022] In one embodiment, the sealing ring includes an annular main body portion and a necking portion. Both the necking portion and the mating portion surround the outside of the first valve core. One end of the necking portion is connected to the main body portion, and the other end is connected to the mating portion.

[0023] In one embodiment, both the necking portion and the mating portion are located inside the main body portion; or

[0024] The main body portion, the necking portion, and the mating portion are arranged in sequence along the second direction.

[0025] In one embodiment, the end of the main body portion facing away from the necking portion is provided with a first flanging portion that turns outward. The outer peripheral surface of the main body portion abuts against the inner wall of the first connecting pipe, and the first flanging portion is sleeved on the end of the first connecting pipe facing away from the connector.

[0026] In one embodiment, the water purifier further includes a housing. The connector is connected to the housing. The housing is provided with a communication pipe through which the first connecting pipe penetrates and is inserted. The end of the communication pipe is provided with a second flanging portion that turns inward, and the second flanging portion presses the first flanging portion tightly against the end of the first connecting pipe facing away from the connector.

[0027] In one embodiment, the inner diameter of the mating portion is less than or equal to the inner diameter of the second valve seat;

[0028] And the overlapping portions exist in the projections of the mutually facing surfaces of the mating portion and the second valve seat on a plane perpendicular to the first direction.

[0029] In one embodiment, the outer diameter of the second connection seat is less than the inner diameter of the main body portion;

[0030] An annular protruding portion is provided inside the main body portion. When the second connection seat is inserted into the first connecting pipe, the protruding portion abuts against the outer wall of the second connection seat.

[0031] In one embodiment, the mutually facing surfaces of the mating portion and the second valve seat are respectively defined as the first surface and the second surface;

[0032] In the initial state, the end of the first valve core facing away from the inner cavity of the connector protrudes from the first surface;

[0033] The distance D1 between the end face of the first valve core facing the second valve core and the first surface, and the distance D2 between the end face of the second valve core facing the first valve core and the second surface satisfy:

[0034] D1 < D2.

[0035] In one embodiment, the end face of the mating portion facing away from the first surface is defined as the third surface;

[0036] A first stepped portion with a local protrusion is provided between the two ends of the first valve core. The first stepped portion is used to block the moving path of the mating portion along the first direction;

[0037] The first step portion includes a first step surface extending radially along the first valve core, and the first step surface is disposed opposite to the third surface;

[0038] The distance D3 between the end face of the first valve core facing the second valve core and the first step surface and the thickness dimension D4 of the mating portion in the first direction satisfy: D3 > D4.

[0039] In one embodiment, the first valve assembly further includes a first valve seat. The first valve core is disposed through the first valve seat, and the first valve seat is connected inside the first connecting pipe. The first valve core can move relative to the first valve seat in the first direction or elastically reset in the second direction opposite to the first direction to open or close the valve hole of the first valve seat. The first direction is the insertion direction in which the second connecting seat is inserted into the first connecting pipe.

[0040] In one embodiment, the first valve seat includes a first valve seat body. The first valve seat body is configured with a first accommodation cavity having openings at both ends, and the opening facing the inner cavity of the communicating vessel forms the valve hole of the first valve seat;

[0041] The first valve core penetrates through the first accommodation cavity and is in guiding cooperation with the cavity wall of the first accommodation cavity, and the first blocking end of the first valve core enters the inner cavity of the communicating vessel through the valve hole of the first valve seat.

[0042] In one embodiment, the first valve assembly further includes a first elastic member. The first elastic member is disposed between the inner wall of the first valve seat and the first valve core to always apply an elastic force in the second direction to the first valve core.

[0043] In one embodiment, at least one second step portion is provided on the outer surface of the first valve core, and both ends of the first elastic member are respectively pressed between the inner wall of the first valve seat and the at least one second step portion.

[0044] In one embodiment, the second valve seat includes a second valve seat body. The second valve seat body is configured with a second accommodation cavity having openings at both ends, and the opening facing away from the inner cavity of the water purification tank forms the valve hole of the second valve seat;

[0045] The second valve core penetrates through the second accommodation cavity and is in guiding cooperation with the cavity wall of the second accommodation cavity, and the second blocking end of the second valve core blocks the valve hole of the second valve seat when moving in the first direction.

[0046] In one embodiment, a third flanging portion that turns inward is provided at the edge of the valve hole of the second valve seat, and the third flanging portion is used for stop cooperation with the second blocking end of the second valve core.

[0047] In one embodiment, the second valve assembly further includes a second elastic member disposed between the inner wall of the second valve seat and the second sealing end of the second valve core for always applying an elastic force in the first direction to the second valve core.

[0048] In one embodiment, an installation cavity communicating with the inner cavity of the water purification tank is formed on the outer wall of the water purification tank, and the second connecting seat is installed in the installation cavity.

[0049] In one embodiment, the communicating vessel is used to communicate with the water storage tank.

[0050] Beneficial effects of the above water purifier:

[0051] One end of the sealing ring is sealingly fitted to the first connecting pipe, and the other end is provided with a fitting portion that movably sleeved on the first valve core. The first connecting pipe, the first valve core and the sealing ring together form a receiving space. Thus, when the second connecting seat is not inserted into the first connecting pipe, the water leaking from one side of the communicating vessel can be temporarily stored in the receiving space, effectively preventing the water from leaking out of the first connecting pipe 40. Brief Description of the Drawings

[0052] Figure 1 Schematic structural diagram of the cooperation between the communicating vessel and the water purification tank in the water purifier provided by the embodiment of the present application;

[0053] Figure 2 Schematic cross-sectional structure diagram of the water purifier provided by the embodiment of the present application;

[0054] Figure 3 For Figure 2 Partial enlarged view of the A position of

[0055] Figure 4a Schematic structural diagram of the first valve core in the water purifier provided by the embodiment of the present application;

[0056] Figure 4b Schematic structural diagram of the second valve seat in the water purifier provided by the embodiment of the present application;

[0057] Figure 5 Schematic structural diagram of the water purifier provided by the embodiment of the present application in the initial state;

[0058] Figure 6 Schematic structural diagram of the water purifier provided by the embodiment of the present application in the first state;

[0059] Figure 7 Schematic structural diagram of the water purifier provided by the embodiment of the present application in the second state;

[0060] Figure 8 Schematic structural diagram of the water purifier provided by the embodiment of the present application in the third state;

[0061] Figure 9 It is a schematic diagram of another structure of the first valve assembly in the water purifier provided by the embodiment of the present application;

[0062] Figure 10 It is a schematic diagram of another structure of the second valve assembly in the water purifier provided by the embodiment of the present application.

[0063] Explanation of the reference numerals in the drawings:

[0064] 100, water purifier;

[0065] 10, communicating vessel; 101, inner cavity of the communicating vessel; 144, sealing end of the clean water tank; 1441, annular protrusion; 145, base; 146, connecting rib; 20, clean water tank;

[0066] 30, first valve assembly; 31, first valve seat; 311, valve hole of the first valve seat; 312, main body of the first valve seat; 313, first accommodating cavity; 32, first valve core; 321, plugging member; 322, main body of the first valve core; 323, first rib; 324, first stepped portion; 3241, first stepped surface; 325, first plugging end; 326, first valve core seal; 33, first elastic member; 34, second stepped portion; 40, first connecting pipe;

[0067] 50, second valve assembly; 501, driving member; 51, second valve seat; 511, valve hole of the second valve seat; 512, main body of the second valve seat; 5121, base; 5122, connecting rib; 513, second accommodating cavity; 514, third flanging portion; 52, second valve core; 521, second plugging end; 53, second elastic member; 60, second connecting seat; 70, housing; 71, communicating pipe; 72, second flanging portion;

[0068] 80, sealing ring; 81, mating portion; 811, first surface; 812, second surface; 813, third surface; 82, main body portion; 821, protruding portion; 83, necking portion; 84, first flanging portion; 91, installation cavity; 92, avoiding cavity;

[0069] F, first direction; S, second direction. Detailed implementation manners

[0070] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0071] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0072] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0073] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0075] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0076] The water purifier according to the embodiment of the present application will be described below with reference to the accompanying drawings.

[0077] Figure 1 It is a schematic structural diagram of the cooperation between the communicating vessel and the water purification tank in the water purifier provided by the embodiment of the present application. Figure 2 It is a schematic cross-sectional structural diagram of the water purifier provided by the embodiment of the present application. Figure 3 is Figure 2 a partial enlarged view of the A position of Figure 4a It is a schematic structural diagram of the first valve core in the water purifier provided by the embodiment of the present application. Figure 4b It is a schematic structural diagram of the second valve seat in the water purifier provided by the embodiment of the present application. Figure 5 It is a schematic structural diagram of the water purifier provided by the embodiment of the present application in the initial state.

[0078] Referring to Figure 1 , Figure 2 , Figure 3 The embodiment of the present application provides a water purifier 100, including a communicating vessel 10, a water purification tank 20, and a first valve assembly 30.

[0079] The communicating vessel 10 is provided with a first connecting pipe 40 communicating with the inner cavity of the communicating vessel 10, and the water purification tank 20 is provided with a second connecting seat 60 communicating with the inner cavity of the water purification tank 20; the first valve assembly 30 includes a first valve core 32 and a sealing ring 80 located in the first connecting pipe 40, and the first valve core 32 is used to open or close the first valve assembly 30 correspondingly when the second connecting seat 60 is inserted into or pulled out of the first connecting pipe 40; one end of the sealing ring 80 is hermetically fitted to the first connecting pipe 40, and the other end is provided with a fitting portion 81, and the fitting portion 81 is movably sleeved on the first valve core 32. The first connecting pipe 40, the first valve core 32 and the sealing ring 80 together form an accommodating space C, and the accommodating space C communicates with the inner cavity of the communicating vessel 10 when the first valve assembly 30 is opened.

[0080] One end of the sealing ring 80 is hermetically fitted to the first connecting pipe 40, and the other end is provided with a fitting portion 81. The fitting portion 81 is movably sleeved on the first valve core 32. The first connecting pipe 40, the first valve core 32, and the sealing ring 80 together form a receiving space C. In this way, when the second connecting seat 60 is not inserted into the first connecting pipe 40, the water leaking from one side of the communicating vessel 10 can be temporarily stored in the receiving space C, effectively preventing the water from leaking out of the first connecting pipe 40.

[0081] In the embodiment of the present application, a plugging member 321 is provided on the first valve core 32. The plugging member 321 is used for plugging and cooperating with the fitting portion 81 to seal the receiving space C. In this way, when the second connecting seat 60 is not inserted into the first connecting pipe 40, it can better prevent the water from leaking out of the sealed receiving space C.

[0082] Further, the water purifier further includes a second valve assembly 50 provided in the second connecting seat. The second valve assembly 50 includes a driving member 501. When the second connecting seat 60 is separated from the first connecting pipe 40, the plugging member 321 and the fitting portion 81 are plugged and cooperated. When the second connecting seat 60 is inserted into the first connecting pipe 40, the driving member 501 abuts against the fitting portion 81 and drives the fitting portion 81 to disengage from the plugging member 321, so that the second connecting seat 60 is communicated with the inner cavity of the communicating vessel 10 through the receiving space C. In this way, when the second connecting seat 60 is inserted into the first connecting pipe 40, the water in the communicating vessel 10 can flow into the first connecting pipe 40 through the receiving space C.

[0083] Further, the sealing ring 80 is configured as an elastic member. The fitting portion 81 can move along a first direction under the drive of the driving member 501, or elastically reset along a second direction opposite to the first direction, so that the volume of the receiving space C becomes smaller or larger. The first direction F is the insertion direction of the second connecting seat 60 into the first connecting pipe 40. With such a setting, when the second connecting seat 60 is inserted into the first connecting pipe 40, the stale water stored in the receiving space C can be squeezed out, preventing bacteria from breeding here when used for a long time. When the second connecting seat 60 is inserted into the first connecting pipe 40 and is in place, the driving member 501 pushes the fitting portion 81 to the position closest to the communicating vessel 10, and at this time, the volume of the receiving space C is the smallest.

[0084] In the embodiment of the present application, the second valve assembly 50 includes a second valve seat 51 and a second valve core 52 disposed through the second valve seat 51. The second valve seat 51 is connected within the second connection seat 60. The second valve core 52 can move relative to the second connection seat 60 in a second direction S or elastically reset in a first direction F opposite to the second direction S to open or close the valve hole 511 of the second valve seat. The second valve seat 51 forms a driving member. The second direction S is the pulling-out direction of the second connection seat 60 relative to the first connection pipe 40. The first direction is the inserting direction of the second connection seat 60 relative to the first connection pipe 40. Specifically, the second valve core 52 can move relative to the second connection seat 60 in the second direction S to open the valve hole 511 of the second valve seat. The second valve core 52 can elastically reset relative to the second connection seat 60 in the first direction F to close the valve hole 511 of the second valve seat.

[0085] Similarly, the first valve assembly 30 further includes a first valve seat 31. A first valve core 32 is disposed through the first valve seat 31. The first valve seat 31 is connected within the first connection pipe 40. The first valve core 32 can move relative to the first valve seat 31 in the first direction F or elastically reset in a second direction S opposite to the first direction F to open or close the valve hole 311 of the first valve seat. Specifically, the first valve core 32 can move relative to the first valve seat 31 in the first direction F to open the valve hole 311 of the first valve seat, and the first valve core 32 can move relative to the first valve seat 31 in the second direction S to close the valve hole 311 of the first valve seat.

[0086] In the embodiment of the present application, the communicating vessel 10 can be used to communicate with a water storage tank (not shown), so that the water purification tank 20 can communicate with the water storage tank through the communicating vessel. The second connection seat 60 can be configured as a tubular member. Additionally, one end of the sealing ring 80 is sealingly fitted to the inner wall of the first connection pipe 40, and both the fitting portion 81 and the blocking member 321 can be provided as annular members.

[0087] The fitting portion 81 can be in clearance fit with the outer periphery of the first valve core 32. The blocking member 321 can block the end surface of the fitting portion 81 facing the second valve core 52. The fitting portion 81 can move relative to the first valve core 32 in the first direction F or elastically reset in the second direction S.

[0088] In the embodiment of the present application, the setting position of the second valve seat 51 corresponds to the setting position of the fitting portion 81, and the setting position of the second valve core 52 corresponds to the setting position of the first valve core 32. The state where the second connection seat 60 is located in the first connection pipe 40 and the second valve seat 51 just contacts the fitting portion 81 is defined as the initial state. In the initial state, there is a gap between the first valve core 32 and the second valve core 52, or the first valve core 32 and the second valve core 52 are in contact with each other and do not transmit acting forces to each other.

[0089] It can be understood that the communicating vessel 10 is provided with a first connecting pipe 40 communicating with the inner cavity of the communicating vessel 10, and the water purification tank 20 is provided with a second connecting seat 60 communicating with the inner cavity of the water purification tank 20. With such a setting, by inserting the second connecting seat 60 into the first connecting pipe 40 and opening the first valve assembly 30 and the second valve assembly 50 simultaneously, the water purification tank 20 can communicate with the water storage tank through the communicating vessel 10, realizing the communication between the water storage tank and the water purification tank 20. The above description takes the water source as the water storage tank as an example. Those skilled in the art can understand that the water source can also be tap water.

[0090] Furthermore, the first valve seat 31 is connected inside the first connecting pipe 40, enabling the first valve core 32 to move relative to the first valve seat 31 along the first direction F to open the valve hole 311 of the first valve seat. And the second valve seat 51 is connected inside the second connecting seat 60, and the second valve core 52 can move relative to the second valve seat 51 in the second direction S to open the valve hole 511 of the second valve seat. Also, due to the corresponding arrangement positions of the second valve core 52 and the first valve core 32, with such a setting, when the second connecting seat 60 is inserted into the first connecting pipe 40, the first valve assembly 30 and the second valve assembly 50 interact, enabling the second valve core 52 and the first valve core 32 to move in the second direction S and the first direction F respectively to open the valve hole 511 of the second valve seat and the valve hole 311 of the first valve seat, so that both the second valve assembly 50 and the first valve assembly 30 are in the open state.

[0091] On the other hand, the first valve core 32 can elastically reset relative to the first valve seat 31 along the second direction S to close the valve hole 311 of the first valve seat, and the second valve core 52 can elastically reset relative to the second valve seat 51 in the first direction F to close the valve hole 511 of the second valve seat. With such a setting, when the second connecting seat 60 disengages from the first connecting pipe 40, both the second valve core 52 and the first valve core 32 perform elastic reset, closing both the valve hole 511 of the second valve seat and the valve hole 311 of the first valve seat, thus making both the first valve assembly 30 and the second valve assembly 50 in the closed state.

[0092] Furthermore, by providing a plugging member 321, the plugging member 321 is used to plug the end face of the mating portion 81 facing the second valve core 52. The mating portion 81 can elastically deform relative to the first valve core 32 to move in the first direction F or elastically reset in the second direction S. The setting position of the second valve seat 51 corresponds to the setting position of the mating portion 81. When the second connecting seat 60 is inserted into the first connecting pipe 40 and the second valve seat 51 just contacts the mating portion 81, there is a gap between the first valve core 32 and the second valve core 52.

[0093] With such arrangement, since the outer end of the sealing ring 80 is sealed with the inner wall of the first connecting tube 40, when the second connecting seat 60 is inserted into the first connecting tube 40, the second valve seat 51 contacts the matching portion 81 to form a seal. At this time, there is a gap between the first valve core 32 and the second valve core 52, and there is no contact between the two, so that the first valve assembly 30 and the second valve assembly 50 are both in a closed state. As the second connecting seat 60 is inserted deeper in the first direction F, the matching portion 81 is pushed by the second valve seat 51 to move in the first direction F relative to the first valve core 32, and elastically deforms, so that the second valve seat 51 and the matching portion 81 are pressed tightly and always maintain a sealed state. During this process, no matter whether the first valve assembly 30 and the second valve assembly 50 are opened or not, the water in the first valve assembly 30 and the second valve assembly 50 cannot leak out from the junction between the matching portion 81 and the second valve seat 51. Therefore, no water leakage will occur during the entire insertion process of the second connecting seat 60.

[0094] When the second connecting seat 60 is separated from the first connecting pipe 40, contrary to the above process, as the second connecting seat 60 is pulled out in the second direction S, the second valve core 52 and the first valve core 32 will first be separated from each other, so that the second valve assembly 50 and the first valve assembly 30 are closed respectively. On this basis, the second valve seat 51 continues to move in the second direction S, and the pressure against the matching portion 81 is gradually reduced until the second valve seat 51 leaves the matching portion 81. The second valve seat 51 is in the elastic reset process, so it is always pressed against the matching portion 81 to maintain the sealing matching relationship between the two. In this process, no matter the first valve assembly 30 and the second valve assembly Regardless of the closing order of the first valve assembly 30 and the second valve assembly 50, during the entire closing process of the first valve assembly 30 and the second valve assembly 50, the water in the first valve assembly 30 and the second valve assembly 50 cannot leak out from the junction between the matching portion 81 and the second valve seat 51. In other words, after the first valve assembly 30 and the second valve assembly 50 are closed, the second valve seat 51 and the matching portion 81 will be out of contact and the sealing state will be released. This is compared with the situation in the related art that water always flows out during the closing process of the first valve assembly 30 and the second valve assembly 50, thereby avoiding water leakage during the pull-out process, which also greatly reduces the amount of water leakage during the entire pull-out process of the second connecting seat 60.

[0095] Further, the outer end of the sealing ring 80 is in sealing fit with the inner wall of the first connecting pipe 40. The fitting portion 81 at the inner end of the sealing ring 80 is sleeved on the outer periphery of the first valve core 32 with a clearance fit. The plugging member 321 plugs the end face of the fitting portion 81 facing the second valve core 52. In this way, whether the second connecting seat 60 is inserted or pulled out, after the second valve seat 51 and the fitting portion 81 are disengaged from contact, the end face of the fitting portion 81 will cooperate with the end face of the plugging member 321 provided on the first valve core 32 to form a seal, preventing the water in the first valve assembly 30 from leaking. Thus, water leakage will not occur during the entire pulling-out process of the second connecting seat 60.

[0096] Referring to Figure 4a , the first valve core 32 includes a first valve core main body 322 and a plurality of first ribs 323. The plurality of first ribs 323 are arranged at intervals and around the outer peripheral surface of the first valve core main body 322. The plugging member 321 is provided at the end of the first valve core main body 322 facing away from the inner cavity of the communicating vessel 10 and is connected to each first rib 323. In this way, when the end face of the plugging member 321 is in contact and cooperation with the end face of the fitting portion 81, the gap between the first valve core 32 and the fitting portion 81 can be completely plugged in the circumferential direction. When the fitting portion 81 moves in the first direction F under the pressing action of the second valve seat 51, it can quickly disengage from the plugging member 321. The fitting portion 81 has a clearance fit with the first ribs 323, so that after the fitting portion 81 disengages from the plugging member 321, the passage between the fitting portion 81 and the first valve core 32 is unobstructed, facilitating the water in the communicating vessel 10 to enter and exit the first valve core 32 assembly. And after the communicating vessel 10 is connected to the water purification tank 20, it is convenient to form a water flow channel between the communicating vessels 10 in the water purification tank 20.

[0097] Further, the plugging member 321 is configured as a disc-shaped structure, and the outer diameter of the plugging member 321 is larger than the inner diameter of the fitting portion 81. In this way, the plugging member 321 can reliably plug the fitting portion 81.

[0098] In the embodiment of the present application, continuing to refer to Figure 3 , the sealing ring 80 includes an annular main body portion 82 and a necking portion 83. The necking portion 83 and the fitting portion 81 both surround the outside of the first valve core 32. One end of the necking portion 83 is connected to the main body portion 82, and the other end is connected to the fitting portion 81. The necking portion 83 can be configured as an elastic member. With such a setting, when an external force acts on the fitting portion 81, since the necking portion 83 is an elastic member, the fitting portion 81 can move relative to the first valve core 32 in the first direction F or elastically return in the second direction S. The sealing ring can be made of a material with elastic resilience such as rubber or silica gel.

[0099] When specifically implemented, it can be as Figure 3As shown, both the necking part 83 and the mating part 81 are located inside the main body part 82. Alternatively, the main body part 82, the necking part 83 and the mating part 81 may be arranged in sequence along the second direction S.

[0100] Furthermore, an outwardly turned first flanging part 84 is provided at the end of the main body part 82 facing away from the necking part 83. The outer peripheral surface of the main body part 82 abuts against the inner wall of the first connecting pipe 40, and the first flanging part 84 is sleeved on the end of the first connecting pipe 40 facing away from the connector 10. In this way, a good seal is formed between the first flanging part 84 and the inner wall of the first connecting pipe 40. At the same time, the sealing ring 80 can be installed on the first connecting pipe 40 through the installation space formed between the first flanging part 84 and the main body part 82.

[0101] Furthermore, referring to Figure 1 and Figure 2 、 Figure 3 the water purifier 100 further includes a housing 70. The connector 10 is connected to the housing 70. The housing 70 is provided with a communicating pipe 71 for the first connecting pipe 40 to penetrate and insert. An inwardly turned second flanging part 72 is provided at the end of the communicating pipe 71. The second flanging part 72 presses the first flanging part 84 against the end of the first connecting pipe 40 facing away from the connector 10. With such a setting, the second flanging part 72 can press against the outside of the first flanging part 84 and press the first flanging part 84 against the end of the first connecting pipe 40.

[0102] In the embodiment of the present application, continuing to refer to Figure 3 the inner diameter of the mating part 81 is less than or equal to the inner diameter of the second valve seat 51, and the projections of the opposite surfaces of the mating part 81 and the second valve seat 51 on a plane perpendicular to the first direction F have an overlapping part. With such a setting, it is convenient for the second valve seat 51 to smoothly press against the mating part 81 and move in the first direction F.

[0103] Furthermore, the outer diameter of the second connection seat 60 is less than the inner diameter of the main body part 82. An annular protrusion 821 is provided inside the main body part 82. When the second connection seat 60 is inserted into the first connecting pipe 40, the protrusion 821 abuts against the outer wall of the second connection seat 60. With such a setting, it is also convenient for the second connection seat 60 to be smoothly inserted into the first connecting pipe 40. The protrusion 821 pressing against the outer wall of the second connection seat 60 makes the insertion operation more tactile on the one hand, and on the other hand, it is convenient for the second connection seat 60 to form a seal with the sealing ring 80 to prevent the second connection seat 60 from withdrawing from the first connecting pipe 40.

[0104] In the embodiment of the present application, referring to Figure 5 the opposite surfaces of the mating part 81 and the second valve seat 51 are respectively defined as the first surface 811 and the second surface 812.

[0105] In the initial state, the end of the first valve core 32 that faces away from the inner cavity 101 of the communicating vessel protrudes from the first surface 811, and the distance D1 between the end surface of the first valve core 32 facing the second valve core 52 and the first surface 811 and the distance D2 between the end surface of the second valve core 52 facing the first valve core 32 and the second surface 812 satisfy: D1<D2. Such a configuration facilitates that when the first surface 811 and the second surface 812 are in contact, there is still a gap between the first valve core 32 and the second valve core 52, ensuring that when the second connecting seat 60 is inserted, the matching portion 81 and the second valve seat 51 are first in contact, forming a seal and then opening the first valve assembly 30 and the second valve assembly 50. At the same time, when the second connecting seat 60 is pulled out, after the first valve assembly 30 and the second valve assembly 50 are closed, the matching portion 81 and the second valve seat 51 are out of contact again.

[0106] Further, the end surface of the matching portion 81 which is away from the first surface 811 is defined as a third surface 813. Figure 5 A partially raised first step portion 324 is provided between the two ends of the first valve core 32, and the first step portion 324 is provided on the moving path of the matching portion 81 toward the first direction F. The first step portion 324 includes a first step surface 3241 extending along the radial direction of the first valve core 32, and the first step surface 3241 is arranged opposite to the third surface 813. The distance D3 between the end surface of the first valve core 32 facing the second valve core 52 and the first step surface 3241 and the thickness dimension D4 of the matching portion 81 along the first direction F satisfy: D3>D4. With such arrangement, during the insertion of the second connecting seat 60, after the second valve seat 51 contacts the sealing ring 80, as the sealing ring 80 is pressed and deformed, the second valve core 52 contacts the first valve core 32 and opens the second valve core 52. As the second connecting seat 60 is further inserted, the second valve seat 51 can press the matching portion 81 to move in the first direction F relative to the first valve core 32 until the third surface 813 contacts the first step surface 3241. The second valve seat 51 continues to move forward along the first direction F by pressing the first step portion 324 through the matching portion 81, pushing the first valve core 32 to move in the first direction F to open the valve hole 311 of the first valve seat.

[0107] Further, the first valve seat 31 includes a first valve seat body 312, and the first valve seat body 312 is configured with a first accommodating cavity 313 with openings at both ends, and the opening toward the inner cavity of the communicating vessel 10 forms a valve hole 311 of the first valve seat. The first valve core 32 penetrates the first accommodating cavity 313, and cooperates with the cavity wall of the first accommodating cavity 313 in a guiding manner, and the first blocking end 325 of the first valve core 32 enters the inner cavity of the communicating vessel 10 through the valve hole 311 of the first valve seat. A first valve core seal 326 may also be provided on the first blocking end 325 of the first valve core 32, which is used to form a sealing cooperation with the valve hole 311 of the first valve seat when contacting the valve hole 311 of the first valve seat.

[0108] Further, the first valve assembly 30 further includes a first elastic member 33 disposed between the inner wall of the first valve seat 31 and the first valve core 32 for always applying an elastic force towards the second direction S to the first valve core 32. In this way, the elastic reset of the first valve core 32 can be achieved.

[0109] Further, in combination Figure 3 with Figure 4a , at least one second stepped portion 34 is provided on the outer surface of the first valve core 32, and both ends of the first elastic member 33 are respectively pressed between the inner wall of the first valve seat 31 and at least one second stepped portion 34. In this way, the first elastic member 33 can be simply positioned by being sleeved on the first valve core 32 and having both ends respectively abutted between the inner wall of the first valve seat 31 and the second stepped portion 34.

[0110] Further, in combination Figure 3 with Figure 4b , the second valve seat 51 includes a second valve seat body 512, and the second valve seat body 512 is configured with a second accommodating cavity 513 having openings at both ends. The opening facing away from the inner cavity of the clean water tank 20, that is, the opening facing the first valve core 31, forms the valve hole 511 of the second valve seat.

[0111] Specifically, the second valve seat body 512 may include two bases 5121 and a plurality of connecting ribs 5122 connected between the two bases 5121. Among them, Figure 3 in, the cross-section is intercepted between adjacent two connecting ribs 5122, so the connecting ribs 5122 are not shown in Figure 3 .

[0112] The second valve core 52 penetrates through the second accommodating cavity 513 and is in guiding fit with the cavity wall of the second accommodating cavity 513, and the second sealing end 521 of the second valve core 52 seals the valve hole 511 of the second valve seat when moving along the first direction F.

[0113] An inwardly folded third flanging portion 514 is provided at the edge of the valve hole 511 of the second valve seat, and the third flanging portion 514 is used for stop cooperation with the second sealing end 521 of the second valve core 52.

[0114] In the embodiment of the present application, the second valve assembly 50 further includes a second elastic member 53 disposed between the inner wall of the second valve seat 51 and the second sealing end 521 of the second valve core 52 for always applying an elastic force towards the first direction F to the second valve core 52. In this way, the elastic reset of the second valve core 52 can be achieved.

[0115] In addition, for the installation of the second connection seat 60, reference can be made to Figure 2, an installation cavity 91 communicating with the inner cavity of the water purification tank 20 is constructed on the outer wall of the water purification tank 20, and the second connecting seat 60 is installed in the installation cavity 91. Of course, an avoidance cavity 92 is also provided outside the installation cavity 91 to facilitate accommodating the first connecting pipe 40.

[0116] Figure 6 Schematic structural diagram of the water purifier provided by the embodiment of the present application in the first state, Figure 7 Schematic structural diagram of the water purifier provided by the embodiment of the present application in the second state, Figure 8 Schematic structural diagram of the water purifier provided by the embodiment of the present application in the third state.

[0117] The following combines Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 to illustrate the insertion and extraction process of the water purification tank 20 and the connector 10 in the water purifier 100 of the embodiment of the present application.

[0118] Figure 3 The figure shows a schematic diagram when the second connecting seat 60 is just inserted into the first connecting pipe 40. At this time, both the first valve assembly 30 and the second valve assembly 50 are in the closed state. The plugging member 321 plugs the end surface of the mating portion 81, so that neither the first valve assembly 30 side nor the second valve assembly 50 side leaks water.

[0119] Figure 5 This is the initial state. At this time, both the first valve assembly 30 and the second valve assembly 50 are still in the closed state. The second surface 812 of the second valve seat 51 just contacts the first surface 811 of the mating portion 81. At this time, there is a gap between the first valve core 32 and the second valve core 52 and they do not contact. The second surface 812 of the second valve seat 51 and the first surface 811 of the mating portion 81 contact to form a seal. The plugging member 321 plugs the end surface of the mating portion 81, and the water in both the first valve assembly 30 and the second valve assembly 50 cannot leak out.

[0120] Referring to Figure 6 , when the second connecting seat 60 is further inserted into the first connecting pipe 40 along the first direction F, the first valve core 32 and the second valve core 52 contact. Since the elastic coefficient of the first elastic member 33 is greater than that of the second elastic member 53, the second valve core 52 is pushed open by the first valve core 32, so that the second valve assembly 50 is opened, and the water purifier 100 is in the first state. During this process, since the second surface 812 of the second valve seat 51 and the first surface 811 of the mating portion 81 always contact to form a seal, water will not leak from between the second valve seat 51 and the mating portion 81.

[0121] Referring to Figure 7, when the second connection seat 60 is further inserted into the first connection pipe 40 along the first direction F, the second valve seat 51 drives the engaging portion 81 to move in the first direction F. While causing elastic deformation of the engaging portion 81, the engaging portion 81 presses against the first stepped portion 324 and drives the first valve core 32 to also move in the first direction F, overcoming the elastic force of the first elastic member 33, so that the first valve core 32 is pushed open, and the first valve assembly 30 is also opened, putting the water purifier 100 in the second state. At this time, both the first valve assembly 30 and the second valve assembly 50 are opened, realizing the water flow between the clean water tank 20 and the connector 10. Among Figure 7 the positions, the second stepped portion 34 on the first valve core 32 abuts against the periphery of the valve hole 311 of the first valve seat, so that the first valve seat 31 cannot continue to move in the first direction F.

[0122] It can be understood that since the second surface 812 of the second valve seat 51 is always in contact with the first surface 811 of the engaging portion 81 to form a seal, water will not leak out between the second valve seat 51 and the engaging portion 81. During this process, the outer wall of the second connection seat 60 and the protrusion 821 are always in interference fit, which can prevent the second connection seat 60 from withdrawing from the first connection pipe 40 in the second direction S, and further prevent water from leaking out.

[0123] Refer to Figure 8 , when the clean water tank 20 is pulled out, as the second valve seat 51 withdraws in the second direction S, the first elastic member 33 elastically resets, and the first valve core 32 gradually moves in the second direction S, first closing the first valve assembly 30. At this time, after the third surface 813 of the engaging portion 81 disengages from the second stepped portion 34, the second valve seat 51 no longer applies a pressing force to the first valve core 32 through the engaging portion 81.

[0124] In addition, when the second connection seat 60 continues to withdraw, due to the lack of the pressing of the second valve seat 51, the engaging portion 81 also gradually elastically resets. During this process, the second elastic member 53 also gradually elastically resets to close the second valve assembly 50. After the second valve assembly 50 is completely closed, the second connection seat 60 continues to withdraw. During this process, the first surface 811 of the engaging portion 81 and the second surface 812 of the second valve seat 51 are always in contact and sealed, and no water leakage will occur, putting the water purifier 100 in Figure 8 the third state shown. Of course, during this process, since the outer diameter of the plug 321 is 8.0 mm and the inner diameter of the engaging portion 81 is 7.3 mm, when the engaging portion 81 resets, the plug 321 finally presses against the first surface 811 of the engaging portion 81, so as to achieve the effect of no water leakage when the clean water tank 20 is pulled out. At this time, the water on one side of the first valve assembly 30 is stored in the space defined by the sealing ring 80 and the first valve seat 31 and will not leak out. And when the clean water tank 20 is continuously pulled out, the engaging portion 81 and the second valve seat 51 are separated from contact, and it can return to the state as shown in Figure 3 shown.

[0125] Figure 9 This is a schematic diagram of another structure of the first valve assembly in the water purifier provided by the embodiment of the present application. Figure 10 This is a schematic diagram of another structure of the second valve assembly in the water purifier provided by the embodiment of the present application.

[0126] Referring to Figure 9 and Figure 10 On the basis of the above-mentioned embodiment, the structures of the first valve assembly 30 and the second valve assembly 50 are further improved. The remaining structures are similar to those described above and will not be elaborated here.

[0127] Specifically, the first valve core 32 includes a first valve core main body 322 and a plurality of first ribs 323. The plurality of first ribs 323 are arranged at intervals and around the outer peripheral surface of the first valve core main body 322. As described above, when the fitting portion 81 is configured as an annular member, the fitting portion 81 is sleeved on the outer peripheral side of each first rib 323 and is in clearance fit with the outer peripheral side of each first rib 323. The inner diameter of the fitting portion 81 is less than 7 mm.

[0128] With such a setting, a sealed water film can be formed between the inner wall of the fitting portion 81 and the first valve core 32 (forming a cross section). With such a setting, since the outer end of the sealing ring 80 is in sealed fit with the inner wall of the first connecting pipe 40, and a sealed water film is formed between the fitting portion 81 at the inner end of the sealing ring 80 and the first valve core 32, no matter during the insertion or extraction of the second connecting seat 60, after the second valve seat 51 and the fitting portion 81 are disengaged, the fitting portion 81 will form a seal with the first valve core 32 to prevent the water in the first valve assembly 30 from leaking. Thus, no water leakage will occur during the entire extraction process of the second connecting seat 60.

[0129] In addition, continuing to refer to Figure 10 , the second valve seat 51 includes a second valve seat main body 512. The second valve seat main body 512 is configured with a second accommodating cavity 513 with openings at both ends. The opening facing away from the inner cavity of the water purification tank 20 forms the valve hole 511 of the second valve seat.

[0130] The second valve core 52 penetrates through the second accommodating cavity 513 and is in guiding fit with the cavity wall of the second accommodating cavity 513. And when the water purification tank plugging end 144 of the second valve core 52 moves along the first direction F, it plugs the valve hole 511 of the second valve seat. There is a ring-shaped protrusion 1441 outside the water purification tank plugging end 144. When the second valve core 52 moves to the position where the ring-shaped protrusion 1441 is outside the hole wall of the valve hole 511 of the second valve seat, the second valve assembly 50 is opened.

[0131] In specific implementation, the second valve seat body 512 may include two bases 145 and a plurality of connecting ribs 146 connected between the two bases 145. A second accommodation cavity 513 is defined between the base 145 and the plurality of connecting ribs 146.

[0132] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0133] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A water purifier, characterized in that, It includes a communicating vessel (10), a first valve assembly (30) and a clean water tank (20); The communicating vessel (10) is provided with a first connecting pipe (40) communicating with the inner cavity of the communicating vessel (10), and the clean water tank (20) is provided with a second connecting seat (60) communicating with the inner cavity of the clean water tank (20); The first valve assembly (30) includes a first valve core (32) and a sealing ring (80) located in the first connecting pipe (40), and the first valve core (32) is used to open or close the first valve assembly (30) correspondingly when the second connecting seat (60) is inserted into or pulled out of the first connecting pipe (40); One end of the sealing ring (80) is hermetically fitted to the first connecting pipe (40), and the other end is provided with a fitting portion (81). The fitting portion (81) is movably sleeved on the first valve core (32). The first connecting pipe (40), the first valve core (32) and the sealing ring (80) together form an accommodating space (C), and the accommodating space (C) communicates with the inner cavity of the communicating vessel (10) when the first valve assembly (30) is opened.

2. The water purifier according to claim 1, characterized in that, A blocking member (321) is provided on the first valve core (32), and the blocking member (321) is used for blocking and cooperating with the fitting portion (81) to seal the accommodating space (C).

3. The water purifier according to claim 2, characterized in that The water purifier further includes a second valve assembly (50) provided in the second connecting seat (60); The second valve assembly (50) includes a driving member (501). When the second connecting seat (60) is separated from the first connecting pipe (40), the blocking member (321) and the fitting portion (81) are in blocking cooperation; When the second connecting seat (60) is inserted into the first connecting pipe (40), the driving member (501) abuts against the fitting portion (81) and drives the fitting portion (81) to disengage from the blocking member (321), so that the second connecting seat (60) communicates with the inner cavity of the communicating vessel (10) through the accommodating space (C).

4. The water purifier according to claim 3, wherein, The sealing ring (80) is configured as an elastic member, and the fitting portion (81) can move in a first direction under the drive of the driving member (501), or elastically reset in a second direction opposite to the first direction, so that the volume of the accommodating space (C) becomes smaller or larger. The first direction (F) is the insertion direction of the second connecting seat (60) into the first connecting pipe (40).

5. The water purifier according to claim 3, wherein The second valve assembly (50) includes a second valve seat (51) and a second valve core (52) passing through the second valve seat (51). The second valve seat (51) is connected in the second connecting seat (60), and the second valve core (52) can move relative to the second connecting seat (60) in a second direction (S), or elastically reset in a first direction (F) opposite to the second direction (S) to open or close the valve hole (511) of the second valve seat; the second valve seat (51) forms the driving member (501); The second direction (S) is the pulling-out direction of the second connecting seat (60) relative to the first connecting pipe (40).

6. The water purifier according to claim 5, characterized in that, The setting position of the second valve seat (51) corresponds to the setting position of the matching portion (81), and the setting position of the second valve core (52) corresponds to the setting position of the first valve core (32). The second connecting seat (60) is located in the first connecting pipe (40), and the state in which the second valve seat (51) just contacts the matching portion (81) is defined as an initial state. In the initial state, there is a gap between the first valve core (32) and the second valve core (52), or the first valve core (32) and the second valve core (52) are in contact with each other and do not transmit force to each other. Preferably, the matching portion (81) is clearance-matched with the first valve core (32), and the blocking member (321) blocks the end surface of the matching portion (81) facing the second valve core (52). Preferably, the first valve core (32) includes a first valve core body (322) and a plurality of first ribs (323), the plurality of first ribs (323) are spaced apart and arranged around the outer circumferential surface of the first valve core body (322), and the blocking member (321) is disposed at the end of the first valve core body (322) facing away from the inner cavity of the communicating vessel (10), and is connected to each of the first ribs (323). Preferably, the first valve core (32) comprises a first valve core body (322) and a plurality of first ribs (323), wherein the plurality of first ribs (323) are spaced apart and arranged around the outer circumference of the first valve core body (322); The matching portion (81) is constructed as an annular part and is sleeved on the outer peripheral side of each first rib (323) and is loosely matched with the outer peripheral side of each first rib (323). The inner diameter of the matching portion (81) is less than 7 mm. Preferably, the matching portion (81) and the blocking member (321) are both configured as annular members. Preferably, the blocking member (321) is configured as a disc-shaped structure, and the outer diameter of the blocking member (321) is greater than the inner diameter of the matching portion (81). Preferably, the sealing ring (80) includes an annular main body (82) and a constricted neck portion (83), the constricted neck portion (83) and the matching portion (81) both surround the outside of the first valve core (32), one end of the constricted neck portion (83) is connected to the main body (82), and the other end is connected to the matching portion (81). Preferably, the neck portion (83) and the matching portion (81) are both located inside the main body portion (82); or The main body portion (82), the neck portion (83) and the matching portion (81) are arranged in sequence along the second direction (S). Preferably, the end of the main body (82) facing away from the neck portion (83) is provided with a first flange portion (84) folded outward, the outer peripheral surface of the main body (82) is pressed against the inner wall of the first connecting tube (40), and the first flange portion (84) is sleeved on the end of the first connecting tube (40) facing away from the communicating vessel (10). Preferably, the water purifier (100) further comprises an outer shell (70), the communicating vessel (10) is connected to the outer shell (70), the outer shell (70) is provided with a communicating pipe (71) for the first connecting pipe (40) to pass through and be inserted, the end of the communicating pipe (71) is provided with a second flange portion (72) folded inwardly, and the second flange portion (72) presses the first flange portion (84) against the end of the first connecting pipe (40) facing away from the communicating vessel (10). Preferably, the inner diameter of the matching portion (81) is smaller than or equal to the inner diameter of the second valve seat (51); Furthermore, the surfaces of the matching portion (81) and the second valve seat (51) that are opposite to each other have overlapping portions when projected onto a plane perpendicular to the first direction (F). Preferably, the outer diameter of the second connecting seat (60) is smaller than the inner diameter of the main body (82); An annular protrusion (821) is provided inside the main body (82), and when the second connecting seat (60) is inserted into the first connecting pipe (40), the protrusion (821) presses against the outer wall of the second connecting seat (60). Preferably, the opposing surfaces of the matching portion (81) and the second valve seat (51) are respectively defined as a first surface (811) and a second surface (812); In the initial state, the end of the first valve core (32) facing away from the inner cavity of the communicating vessel (10) protrudes from the first surface (811); The distance D1 between the end surface of the first valve core (32) facing the second valve core (52) and the first surface (811) and the distance D2 between the end surface of the second valve core (52) facing the first valve core (32) and the second surface (812) satisfy: D1<D2. Preferably, an end surface of the matching portion (81) facing away from the first surface (811) is defined as a third surface (813); A partially raised first step portion (324) is provided between the two ends of the first valve core (32), and the first step portion (324) is used to block the moving path of the matching portion (81) along the first direction (F); The first step portion (324) comprises a first step surface (3241) extending radially along the first valve core (32), and the first step surface (3241) is arranged opposite to the third surface (813); The distance D3 between the end face of the first valve core (32) facing the second valve core (52) and the first step face (3241) and the thickness dimension D4 of the matching portion (81) along the first direction (F) satisfy: D3>D4. Preferably, the first valve assembly (30) further includes a first valve seat (31). The first valve core (32) is disposed through the first valve seat (31). The first valve seat (31) is connected inside the first connecting pipe (40). The first valve core (32) is capable of moving relative to the first valve seat (31) along a first direction (F), or elastically resetting along a second direction (S) opposite to the first direction (F) to open or close the valve hole (311) of the first valve seat. The first direction (F) is the insertion direction in which the second connecting seat (60) is inserted into the first connecting pipe (40). Preferably, the first valve seat (31) includes a first valve seat body (312). The first valve seat body (312) is configured with a first accommodating cavity (313) having openings at both ends. The opening facing the inner cavity of the communicating vessel (10) forms the valve hole (311) of the first valve seat; The first valve core (32) penetrates through the first accommodating cavity (313) and is in guiding cooperation with the cavity wall of the first accommodating cavity (313). And the first blocking end (325) of the first valve core (32) enters the inner cavity of the communicating vessel (10) through the valve hole (311) of the first valve seat. Preferably, the first valve assembly (30) further includes a first elastic member (33). The first elastic member (33) is disposed between the inner wall of the first valve seat (31) and the first valve core (32) for always applying an elastic force towards the second direction (S) to the first valve core (32). Preferably, at least one second step portion (34) is provided on the outer surface of the first valve core (32). Both ends of the first elastic member (33) are respectively pressed between the inner wall of the first valve seat (31) and the at least one second step portion (34). Preferably, the second valve seat (51) includes a second valve seat body (512). The second valve seat body (512) is configured with a second accommodating cavity (513) having openings at both ends. The opening facing away from the inner cavity of the water purification tank (20) forms the valve hole (511) of the second valve seat; The second valve core (52) penetrates through the second accommodating cavity (513) and is in guiding cooperation with the cavity wall of the second accommodating cavity (513). And the second blocking end (521) of the second valve core (52) blocks the valve hole (511) of the second valve seat when moving along the first direction (F).

7. The water purifier according to claim 6, characterized in that An inwardly turned third flanging portion (514) is provided at the edge of the valve hole (511) of the second valve seat. The third flanging portion (514) is used for stop cooperation with the second blocking end (521) of the second valve core (52).

8. The water purifier according to claim 6, wherein The second valve assembly (50) further includes a second elastic member (53). The second elastic member (53) is disposed between the inner wall of the second valve seat (51) and the second blocking end (521) of the second valve core (52) for always applying an elastic force towards the first direction (F) to the second valve core (52).

9. The water purifier according to claim 6, characterized in that The outer wall of the water purification tank (20) is configured with an installation cavity (91) communicating with the inner cavity of the water purification tank (20), and the second connector (60) is installed in the installation cavity (91).

10. The water purifier according to claim 1, characterized in that, The communicating vessel (10) is used to communicate with a water storage tank.

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