Valve core assembly, multi-way valve and water softener

Abstract

The application relates to a valve core assembly, a multi-way valve and a water softener, which comprises a first sealing part penetrating an inner cavity in an axial direction and a first supporting part arranged in the inner cavity of the first sealing part; the first supporting part comprises a connecting end and a supporting end, the connecting end is formed by extending inward from the inner wall of the first sealing part, and the supporting end is connected to one end of the connecting end away from the first sealing part and defines a first supporting space with the first sealing part. The valve core comprises a second supporting part and a second sealing part, the second sealing part is sleeved on the outer periphery of the second supporting part and defines a second supporting space with the second supporting part, wherein when the valve core is press-fitted in the inner cavity of the first sealing part, the second sealing part sleeved on the outer periphery of the second supporting part is respectively sealingly inserted into the first supporting space and the second supporting space with the supporting end. In this way, the rotating position of the second sealing part and the first sealing part is limited, so as to ensure the reliability of the rotating assembly.

Description

Technical Field

[0001] This application relates to the field of water softener technology, and in particular to a valve core assembly, a multi-way valve, and a water softener. Background Technology

[0002] With economic development and social progress, people have increasingly higher demands for quality of life, leading to the application of various water treatment equipment in people's lives. Common water treatment equipment includes water softeners and water purifiers. Among them, water softeners are widely used because they can remove calcium and magnesium ions from water, reducing water hardness.

[0003] In existing water softeners, the multi-way valve is the core component for controlling the flow direction of water in the integrated water circuit. By controlling the multi-way valve to switch between different positions, the water flow can be controlled to flow in different directions in different structures. A multi-way valve generally includes a valve body and a valve core assembly. The valve core assembly is assembled on the valve body to communicate with the valve body and control the water flow direction. The valve core assembly generally includes a valve core and a gland. The valve core is rotatably assembled inside the gland, which is used to press the valve core onto the valve body.

[0004] However, in existing water softeners, the valve core and gland are prone to deformation during assembly, resulting in excessive clearance and poor sealing. This leads to internal or external leakage during use, affecting the softening performance of the water softener, wasting water, or even causing the water softener to malfunction due to excessive leakage. Summary of the Invention

[0005] Based on this, this application addresses the problem of poor sealing effect in valve core assembly by proposing a valve core assembly, a multi-way valve, and a water softener. The valve core assembly has technical advantages such as reasonable assembly and good sealing effect.

[0006] A valve core assembly, comprising:

[0007] A gland component includes a first sealing portion forming an inner cavity through an axial direction and a first support portion disposed within the inner cavity of the first sealing portion; the first support portion includes a connecting end and a supporting end, the connecting end extending inwardly from the inner wall of the first sealing portion, and the supporting end intersectingly connecting to the end of the connecting end away from the first sealing portion and defining a first supporting space therebetween; and

[0008] The valve core includes a second support portion and a second sealing portion, wherein the second sealing portion is sleeved on the outer periphery of the second support portion and defines a second support space with the second support portion;

[0009] When the valve core is pressed into the inner cavity of the first sealing part, the second sealing part, which is sleeved on the outer periphery of the second support part, and the support end are respectively sealed and inserted into the first support space and the second support space.

[0010] In one embodiment, the first support space and the second support space are arranged radially along the valve core assembly, and their openings are arranged facing each other.

[0011] In one embodiment, the support end itself encloses to form a third support space, the second support part includes a first end and a second end arranged axially, the second sealing part is sleeved on the outer periphery of the first end and defines the second support space with the first end, and the second end is assembled inside the third support space.

[0012] In one embodiment, the support end is provided with a uniform thickness along the radial direction of the valve core assembly.

[0013] In one embodiment, the first support portion and the second end have a first support surface and a second support surface facing each other, and there is a first reserved gap between the first support surface and the second support surface.

[0014] In one embodiment, the first reserved gap has a radial length of 0 mm to 0.05 mm in the valve core assembly.

[0015] In one embodiment, the first sealing portion and the second sealing portion have a first sealing surface and a second sealing surface facing each other, and a second reserved gap is provided between the first sealing surface and the second sealing surface.

[0016] In one embodiment, the second reserved gap has a radial length of 0.1 mm to 0.5 mm in the valve core assembly.

[0017] In one embodiment, the second sealing part has a sealing groove on the side opposite to the second support part and protrusions on both sides of the sealing groove. A sealing ring is provided in the sealing groove, and the second sealing part is sealed and assembled with the first sealing part through the sealing ring.

[0018] Furthermore, the side of the protrusion facing the first sealing surface forms the second sealing surface.

[0019] In one embodiment, the sealing ring and the first sealing part are interference fit.

[0020] In one embodiment, the sealing groove includes a plurality of grooves, and the protrusion is provided between every two sealing grooves;

[0021] Furthermore, each of the protrusions has the second sealing surface.

[0022] According to another aspect of this application, a multi-way valve is also provided, including a valve body and a valve core assembly as described in any of the above embodiments. The valve body has a valve cavity, and the valve core assembly is assembled on the valve body and communicates with the valve cavity to form a flow channel.

[0023] According to another aspect of this application, a water softener is provided, including the multi-way valve described in the above embodiments.

[0024] The aforementioned valve core assembly divides the gland into a first sealing part and a first supporting part, and the valve core into a second supporting part and a second sealing part. The supporting end of the first supporting part is sealed and inserted into the second supporting space formed by the second supporting part and the second sealing part. That is, when the valve core is rotated and pressed into the inner cavity of the gland, the first supporting part can only rotate within the second supporting space. The portion of the second sealing part that is sleeved on the outer periphery of the second supporting part is sealed and inserted into the first supporting space. When the valve core is rotated and pressed into the inner cavity of the gland, the second sealing part can only rotate under the limitation of the first supporting space. At this time, the side of the second sealing part facing away from the second supporting part is sealed and assembled with the first sealing part. Thus, the first and second supporting spaces limit the cooperative rotation position of the second sealing part and the first sealing part, preventing the second sealing part and the first sealing part from rotating to one side and deforming, which would result in an excessive deviation in the sealing gap on one side. This ensures the reliability of the rotational assembly and achieves sealing assembly without secondary processing. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a valve core assembly provided in an embodiment of this application;

[0026] Figure 2 for Figure 1 The exploded view of the valve core assembly provided in the diagram;

[0027] Figure 3 for Figure 1 A cross-sectional structural diagram of the valve core assembly provided in the diagram;

[0028] Figure 4 for Figure 1 A schematic diagram of the valve core structure provided in the diagram;

[0029] Figure 5 for Figure 1 The diagram shows the structure of the gland part of the valve core assembly provided in the document.

[0030] Reference numerals: 100, valve core assembly; 10, gland; 11, first sealing part; 111, first sealing surface; 13, first support part; 131, first support surface; 132, third support space; 133, connecting end; 134, support end; 14, first support space; 20, sealing ring; 30, valve core; 31, second sealing part; 311, second sealing surface; 312, sealing groove; 313, protrusion; 32, second support part; 321, second support surface; 322, second end; 323, first end; 33, second support space; X, radial; Y, axial. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0032] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening 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 intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] One embodiment of this application provides a water softener (not shown in the figure). The water softener removes calcium and magnesium ions from raw water through ion exchange resin in a resin tank, thereby reducing water hardness and providing users with soft water with lower calcium and magnesium ion content. The water softener includes an integrated water circuit and a water softening device and a brine supply device connected to the integrated water circuit. The integrated water circuit is equipped with a multi-way valve for controlling the water flow direction.

[0038] The multi-way valve has seven positions: water supply position, backwash position, first regeneration position, slow wash position, second regeneration position, water replenishment position, and forward wash position. The multi-way valve can switch between the above positions so that the water softener has seven states: water supply state, backwash state, first regeneration state, slow wash state, second regeneration state, water replenishment state, and forward wash state.

[0039] An embodiment of this application also provides a multi-way valve, which includes a valve body and a valve core assembly. The valve body has a valve cavity, and the valve core assembly is assembled on the valve body and communicates with the valve cavity to form a flow channel for water flow, so as to satisfy the connection of the water flow channel in multiple working positions of the multi-way valve.

[0040] As in the background technology, such as Figure 1 The valve core assembly 100 generally includes a valve core 30 and a gland 10. The valve core 30 rotates within the gland 10 to be assembled inside the gland 10. The gland 10 is fixed to the valve body with screws to form an integral structure with the valve body. When the valve core 30 rotates relative to the gland 10, the multi-way valve can be switched to different positions.

[0041] Furthermore, since the valve core 30 and the gland 10 are generally injection molded parts, the sealing effect between them needs to be considered when pressing the valve core 30 into the gland 10 to avoid leakage. However, on the one hand, due to the machining error of the injection molded parts, the two may not be able to achieve a tight fit, resulting in an assembly gap inside. On the other hand, when the valve core 30 is pressed into the gland 10, during the rotation of the valve core 30, the different torques on the injection molded parts at different positions cause different degrees of deformation, resulting in the valve core 30 not being round, and an assembly gap will still exist.

[0042] To solve the above problems, see Figures 2 to 5 This application provides a valve core assembly 100 for use in a multi-way valve. Specifically, the valve core assembly 100 includes a gland 10 and a valve core 30. The valve core 30 is rotatably pressed into the gland 10 and seals with the gland 10 so that the valve core assembly 100 can cooperate with the valve body of the multi-way valve to form multiple different water flow channels.

[0043] See Figure 2 , Figure 3 and Figure 5 The pressure cap 10 includes a first sealing part 11 that extends through the axial direction Y to form an inner cavity and a first support part 13 disposed in the inner cavity of the first sealing part 11. The first support part 13 has a connecting end 133 and a support end 134 formed at opposite ends. The connecting end 133 extends inward from the inner wall of the first sealing part 11, and the support end 134 intersects and connects to the end of the connecting end 133 away from the first sealing part 11 and defines a first support space 14 with the first sealing part 11.

[0044] See Figure 2 , Figure 3 and Figure 4The valve core 30 includes a second support portion 32 and a second sealing portion 31. One end of the second sealing portion 31 is sleeved on the outer periphery of the second support portion 32 and defines a second support space 33 with the second support portion 32. When the valve core 30 is press-fitted into the inner cavity of the first sealing portion 11, the second sealing portion 31 sleeved on the outer periphery of the second support portion 32 is sealed and inserted into the first support space 14, and the support end 134 is sealed and inserted into the second support space 33. That is, the second sealing portion and the support end 134 of the second support portion 32 interlock to form mutual support. At this time, the side of the second sealing portion 31 facing away from the second support portion 32 is sealed and assembled with the first sealing portion 11.

[0045] Thus, when the valve core 30 is rotated and pressed into the gland 10, the support end 134 of the first support part 13 is sealed and inserted into the second support space 33 formed by the second support part 32 and the second sealing part 31. That is, when the valve core 30 is rotated and pressed into the inner cavity of the gland 10, the first support part 13 can only rotate within the second support space 33. The portion of the second sealing part 31 that is sleeved on the outer periphery of the second support part 32 is sealed and inserted into the first support space 14. When the valve core 30 is rotated and pressed into the inner cavity of the gland 10, the second sealing part 31 can only rotate under the limitation of the first support space 14. Thus, by limiting the cooperative rotation position of the second sealing part 31 and the first sealing part 11 through the first support space 14 and the second support space 33, the second sealing part 31 and the first sealing part 11 are prevented from rotating to one side and deforming, resulting in an excessive deviation in the sealing gap on one side. This ensures the reliability of the rotational assembly and achieves sealing assembly without secondary processing.

[0046] Specifically, in one embodiment, the first support space 14 and the second support space 33 are arranged at a radial X interval along the valve core assembly 100, and their openings are arranged facing each other.

[0047] Specifically, the support end 134 and the first sealing part 11 are arranged at a radial distance X along the valve core assembly 100. The end of the second sealing part 31 that is sleeved on the outer periphery of the second support part 32 is also arranged at a radial distance X along the valve core assembly 100. Thus, along the axial Y of the valve core assembly 100, while the part of the second sealing part 31 that is sleeved on the outer periphery of the second support part 32 extends into the first support space 14 through the opening of the first support space 14, the support end 134 extends into the second support space 33 through the opening of the second support space 33, thereby limiting the valve core 30 and the pressure plate 10 in the radial X direction and preventing displacement of the two in the radial X direction.

[0048] Understandably, the second sealing part 31, which is sealed and inserted in the first support space 14, and the support end 134, which is sealed and inserted in the second support space 33, are arranged along the radial X of the valve core assembly 100. In one embodiment, the second sealing part 31 and the support end 134 are fitted on two opposing surfaces in the radial X of the valve core assembly 100 to achieve interlocking.

[0049] This ensures that the valve core 30 always rotates around the same axis when screwed into the gland 10, preventing the second sealing part 31 and the first sealing part 11 from rotating to one side and deforming, which would result in an excessive deviation in the sealing gap on one side, thus ensuring the reliability of the rotary assembly.

[0050] Understandably, ideally, when the valve core 30 is screwed into the gland 10, it can rotate around the central axis of the valve core assembly 100 to ensure a reasonable assembly structure and convenient processing.

[0051] Furthermore, the sealing connection between the first sealing part 11 and the second sealing part 31 can be achieved by setting corresponding structures on the two surfaces facing each other, proportionally setting protrusions and grooves, or setting threaded connections.

[0052] Specifically, in one embodiment, see [reference] Figure 4 The second sealing part 31 has a sealing groove 312 on the side opposite to the second support part 32. A sealing ring 20 is placed in the sealing groove 312. When the second sealing part 31 and the first sealing part 11 rotate relative to each other, the sealing ring 20 moves with the sealing groove 312 to a set position and seals against the first sealing part 11.

[0053] Furthermore, in order to ensure the sealing connection between the first sealing part 11 and the second sealing part 31, the sealing ring 20 and the first sealing part 11 are interference fit to avoid the phenomenon of water leakage due to poor sealing between the two.

[0054] In one embodiment, see [reference] Figure 3 The second support portion 32 includes a first end 323 and a second end 322 arranged along the axial direction Y. The support end 134 of the first support portion 13 encloses itself to form a third support space 132. Understandably, the arrangement of the first support portion 13 separates the third support space 132 from the first support space 14. The second sealing portion 31 is sleeved on the outer periphery of the first end 323 and defines the second support space 33 with the first end 323. The portion of the second sealing portion 31 sleeved on the outer periphery of the first end 323 is sealed and inserted into the first support space 14, while the second end 322 is sealed and inserted into the third support space 132, and rotates around a set axis within the third support space 132, thereby realizing the assembly of the valve core 30 and the gland member 10.

[0055] Preferably, the set axis at this time can be the central axis of the valve core assembly 100. The specific assembly process is as follows: the second end 322 of the support part is rotated around the central axis of the valve core assembly 100 and sealed and inserted into the third support space 132. At this time, the second sealing part 31 is sleeved on the outer periphery of the first end 323. The central axis of the valve core assembly 100 is rotated and sealed and inserted into the first support space 14. At the same time, the support end 134 is sealed and inserted into the second support space 33. During this process, the second sealing part 31 rotates around the central axis of the valve core assembly 100 until the part of the second sealing part 31 sleeved on the outer periphery of the first end 323 abuts against the connecting end 133, thereby completing the tight fit between the second sealing part 31 and the first sealing part 11.

[0056] At this point, the compression of the sealing ring 20 at various positions is similar, and there will be no unreasonable assembly phenomenon where one side has excessive compression and the other side has insufficient compression.

[0057] Understandably, without the first support space 14 and the second support space 33, the valve core 30 is prone to unilateral tilting when subjected to rotational force. This could result in one side of the sealing ring 20 having a tilt greater than 25% and the other side less than 15%, leading to water leakage during rotation or use. Furthermore, addressing subsequent leakage issues could increase operational costs. The first support space 14 and the second support space 33 of this application provide support and limit for rotational movement, thereby preventing the valve core 30 from tilting to one side.

[0058] In other embodiments, the valve core 30 can be kept stationary while the gland 10 can be rotated to achieve rotational assembly of the valve core 30 and the gland 10.

[0059] In one embodiment, the first support space 14 and the second support space 33 are both annular, and the third support space 132 may be cylindrical. The annular portion of the second sealing part 31 and the support end rotate within the adapted annular first support space 14 and the second support space 33, respectively, while the cylindrical second end 322 rotates within the adapted cylindrical third support space 132 to ensure smooth installation.

[0060] In one embodiment, the support end 134 of the first support portion 13 is provided with a uniform thickness in the radial X direction of the valve core assembly 100. This uniform thickness structure firstly simplifies the injection molding process, resulting in relatively smaller errors and deformations. Secondly, when the second end 322 is assembled into the third support space 132 and the support end is assembled into the second support space 33, the applied pressure to the support end is balanced, minimizing deformation and ensuring that the deformation error of the first support portion 13 is within an acceptable range. This avoids situations where one side of the sealing ring 20 is compressed excessively while the other side is compressed insufficiently.

[0061] In one embodiment, see [reference] Figures 3 to 5 The first support portion 13 and the second end 322 have a first support surface 131 and a second support surface 321 facing each other, and the first support surface 131 and the second support surface 321 have a first reserved gap.

[0062] Understandably, the first support surface 131 is formed on the side of the first support portion 13 facing the third support space 132, and the second support surface 321 is formed on the outer surface of the second end 322. In actual operation, if there are processing errors or non-circular processing of the first support portion 13 and the second end 322, the setting of the first reserved gap can ensure that the second end 322 can rotate smoothly in the third support space 132.

[0063] Furthermore, the first reserved gap is to ensure smooth rotation of the second end 322 inside the third support space 132, and the first reserved gap should not be too large to avoid the second end 322 from being misaligned or eccentric within the third support space 132, which would cause a large deviation in the compression of the sealing ring 20 at various points.

[0064] Specifically, the range of the first reserved gap is 0mm-0.05mm, that is, the length of the first reserved gap in the radial X direction of the valve core assembly 100 is 0mm-0.05mm. When the first reserved gap is 0mm, the first support surface 131 and the second support surface 321 are tightly fitted. When the first reserved gap is greater than 0.05mm, the second end 322 is prone to misalignment and eccentricity in the third support space 132, which causes a large deviation in the compression of the sealing ring 20 at various points.

[0065] In one embodiment, see [reference] Figures 3 to 5 The first sealing part 11 and the second sealing part 31 have a first sealing surface 111 and a second sealing surface 311 facing each other, and the first sealing surface 111 and the second sealing surface 311 have a second reserved gap.

[0066] Understandably, the first sealing surface 111 is formed on the side surface of the first sealing part 11 facing the internal space, and the second sealing surface 311 is formed on the outer surface of the second sealing part 31 facing away from the second support part 32. In actual operation, if there are machining errors or non-roundness in the first sealing part 11 and the second sealing part 31, or if the valve core 30 is deformed, the reserved gap can ensure that the second sealing part 31 can rotate smoothly inside the first sealing part 11.

[0067] Specifically, the range of the second reserved gap is 0.1mm-0.5mm, preferably 0.2-0.3mm, to ensure the reasonable tolerance range required for normal injection molding production of the valve core 30 and the pressure cap.

[0068] In one embodiment, the second sealing portion 31 forms one side of the sealing groove 312, and has protrusions 313 on both sides of the sealing groove 312. The side of the protrusions 313 facing the first sealing surface 111 forms the second sealing surface 311. The sealing ring 20 disposed in the sealing groove 312 between the two protrusions 313 is sealed and fitted with the second sealing surface 311, and there is a clearance fit between the protrusions 313 and the second sealing surface 311.

[0069] Specifically, the sealing groove 312 may include multiple grooves, and a protrusion 313 is provided between every two sealing grooves 312. Each protrusion 313 has a second sealing surface 311. Since the protrusion 313 is prone to processing errors during injection molding, the surface of each protrusion 313 is limited to ensure that the valve core 30 is assembled in place. Furthermore, by providing multiple sealing grooves 312, multiple sealing rings 20 can be provided at intervals to achieve multi-layer sealing.

[0070] According to another aspect of this application, a water softener is also provided, including the multi-way valve in the above embodiments. Since the water softener includes any feature of any of the above multi-way valves, the water softener provided by this application has the advantages of any of the above embodiments, which will not be repeated here.

[0071] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A valve core assembly for a multi-way valve, characterized in that, include: The pressure cap includes a first sealing portion forming an inner cavity through an axial direction and a first support portion disposed in the inner cavity of the first sealing portion; the first support portion includes a connecting end and a supporting end, the connecting end being formed by extending inward from the inner wall of the first sealing portion, and the supporting end being intersected and connected to the end of the connecting end away from the first sealing portion and defining a first supporting space with the first sealing portion. and The valve core includes a second support portion and a second sealing portion. The second sealing portion is sleeved on the outer periphery of the second support portion and defines a second support space with the second support portion. The first support space and the second support space are arranged radially along the valve core assembly, and their openings are arranged facing each other. When the valve core is pressed into the inner cavity of the first sealing part, the second sealing part, which is sleeved on the outer periphery of the second support part, and the support end are respectively sealed and inserted into the first support space and the second support space. The support end itself encloses to form a third support space. The second support part includes a first end and a second end arranged along the axial direction. The second sealing part is sleeved on the outer periphery of the first end and defines the second support space with the first end. The second end is assembled inside the third support space. The second sealing part and the support end are attached to two radially opposite surfaces of the valve core assembly. The portion of the second sealing part sleeved on the outer periphery of the first end abuts against the connecting end, so that the second sealing part and the first sealing part are tightly fitted. The support end and the second end have a first support surface and a second support surface facing each other, and there is a first reserved gap between the first support surface and the second support surface. The first sealing part and the second sealing part have a first sealing surface and a second sealing surface facing each other, and there is a second reserved gap between the first sealing surface and the second sealing surface. The first sealing surface is formed on the side surface of the first sealing part facing the internal space, and the second sealing surface is formed on the outer surface of the second sealing part facing away from the second support part. The second sealing part has a sealing groove and protrusions on both sides of the sealing groove on the side opposite to the second support part. A sealing ring is provided in the sealing groove, and the second sealing part is sealed and assembled with the first sealing part through the sealing ring; and the side of the protrusion facing the first sealing surface forms the second sealing surface.

2. The valve core assembly according to claim 1, characterized in that, The support end is provided with a uniform thickness along the radial direction of the valve core assembly.

3. The valve core assembly according to claim 1, characterized in that, The first reserved gap has a radial length of 0 mm to 0.05 mm in the valve core assembly.

4. The valve core assembly according to claim 1, characterized in that, The second reserved gap has a radial length of 0.1mm-0.5mm in the valve core assembly.

5. The valve core assembly according to claim 1, characterized in that, The sealing ring and the first sealing part are interference fit.

6. The valve core assembly according to claim 1, characterized in that, The sealing groove includes multiple grooves, and the protrusion is provided between every two sealing grooves. Furthermore, each of the protrusions has the second sealing surface.

7. A multi-way valve, characterized in that, The valve includes a valve body and a valve core assembly according to any one of claims 1-6, wherein the valve body has a valve cavity, and the valve core assembly is assembled on the valve body and communicates with the valve cavity to form a flow channel.

8. A water softener, characterized in that, Includes the multi-way valve as described in claim 7.

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