Valve core assembly, multi-way valve and water softener

Abstract

The present application relates to a valve core assembly, a multi-way valve, and a water softener. The valve core assembly includes a movable valve disc, which has a first end face and a second end face arranged opposite to each other. The first end face is provided with a guide groove and a blocking portion, and the blocking portion divides the guide groove into a first guide portion, a second guide portion, and a third guide portion that are connected in sequence. The movable valve disc can switch the conduction state of the valve core assembly provided with the movable valve disc by simply rotating the movable valve disc at a small angle, thereby achieving rapid switching of different working positions of the multi-way valve provided with the movable valve disc. Therefore, while enriching the functions of the multi-way valve, it simplifies the structure of the valve core assembly and reduces the design difficulty of the multi-way valve.

Description

Technical Field

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

[0002] At present, the tap water used in cities is usually collected from groundwater. However, groundwater usually contains a certain amount of calcium ions and magnesium ions, which makes the water easy to scale during use, and then causes damage to electrical appliances. Softening hard water and reducing the hardness of drinking water can effectively prevent kidney stones, reduce the burden on the heart and kidneys, and benefit people's health. Therefore, water softeners that can soften hard water are used more and more frequently in life.

[0003] Water softeners typically remove scale by exchanging functional ions on the resin for calcium and magnesium ions in the water, thereby absorbing excess calcium and magnesium ions. Conventional water softeners typically consist of an integrated waterway, a softening device, and a salt supply unit connected to the integrated waterway. Raw water enters the softening device through the integrated waterway, where the resin layer softens the raw water and outputs softened water through the integrated waterway for user use. When all the resin is fully adsorbed with calcium and magnesium ions, the softener can no longer soften tap water, requiring the exchange resin to be backwashed and regenerated. The salt in the salt supply unit is dissolved and saturated before entering the softening device. The saturated salt solution soaks the resin, allowing the numerous sodium ions in the solution to displace the calcium and magnesium ions adsorbed on the resin. Once the calcium and magnesium ions are replaced, the resin is restored and regenerated, ready for the next softening cycle.

[0004] In existing water softeners, the multi-way valve is the core component that controls the flow of water in the integrated water circuit. By switching the multi-way valve between different working positions, water can be controlled to flow in different directions and structures, thereby achieving functions such as water supply, backwashing, regeneration, and water replenishment. However, the numerous working positions also lead to a relatively complex structure of the multi-way valve, resulting in numerous structural problems and performance defects, which affect the operational stability and service life of the water softener. Summary of the Invention

[0005] In response to the problem that the structure of the multi-way valve of a water softener is relatively complex, the present application provides a movable valve plate, a valve core assembly, a multi-way valve and a water softener. The movable valve plate, valve core assembly, multi-way valve and water softener can achieve the technical effect of simplifying the structure of the multi-way valve.

[0006] According to one aspect of the present application, a movable valve plate is provided, which has a first end face and a second end face arranged opposite to each other, the first end face is provided with a guide groove and a blocking portion, and the blocking portion divides the guide groove into a first guide portion, a second guide portion and a third guide portion that are connected in sequence.

[0007] In one embodiment, the first guide portion and the third guide portion are spaced apart in the circumferential direction of the movable valve plate, the blocking portion is located between the first guide portion and the third guide portion, and in the radial direction of the movable valve plate, the blocking portion is located on one side of the second guide portion.

[0008] In one embodiment, the guide groove and the blocking portion form an outer contour on the first end surface that is located within a virtual sector shape, and the virtual sector shape is curved and extends along the circumference of the movable valve plate.

[0009] According to one aspect of the present application, a valve core assembly is provided, comprising a fixed valve plate and the above-mentioned movable valve plate, wherein the fixed valve plate is attached to one side of the first end surface of the movable valve plate.

[0010] In one embodiment, the fixed valve plate is provided with a first communicating hole and a plurality of second communicating holes, the first communicating hole and the plurality of second communicating holes are arranged at intervals in the circumferential direction of the fixed valve plate, and the plurality of second communicating holes are located on the same side of the first communicating hole;

[0011] The first communicating hole can selectively communicate with any one of the second communicating holes through the guide groove, and the blocking portion is used to cover the remaining second communicating holes between the first communicating hole and the second communicating hole that are interconnected through the guide groove.

[0012] In one embodiment, the first guide portion is used to connect to the first communicating hole, the third guide portion is used to selectively connect to any one of the second communicating holes, and the projection of the second guide portion on the fixed valve plate is staggered with the second communicating hole.

[0013] In one embodiment, the first communicating hole is in a fan shape that bends and extends along the circumference of the fixed valve plate.

[0014] According to one aspect of the present application, a multi-way valve is provided, comprising the valve core assembly described above.

[0015] In one embodiment, the multi-way valve also includes a valve body and a valve stem, the valve core assembly is accommodated in the valve body, the first axial end of the valve stem extends into the valve body and is transmission-connected with the movable valve plate, and the movable valve plate can rotate relative to the fixed valve plate under the drive of the valve stem, so that the first connecting hole can selectively connect to any one of the second connecting holes through the guide groove.

[0016] According to one aspect of the present application, a water softener is provided, comprising the multi-way valve described above.

[0017] The above-mentioned movable valve plate only needs to be rotated at a small angle to switch the conduction state of the valve core assembly equipped with the movable valve plate, thereby realizing the rapid switching of different workstations of the multi-way valve equipped with the movable valve plate. Therefore, while enriching the function of the multi-way valve, it simplifies the structure of the valve core assembly and reduces the design difficulty of the multi-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the internal structure of a multi-way valve according to an embodiment of the present application;

[0019] Figure 2 for Figure 1 The schematic diagram of the structure of the movable valve plate of the multi-way valve shown;

[0020] Figure 3 for Figure 2 A front view of the movable valve plate shown;

[0021] Figure 4 for Figure 1 The structural diagram of the fixed valve plate of the multi-way valve shown;

[0022] Figure 5 for Figure 4 A structural schematic diagram of the fixed valve plate at another angle is shown;

[0023] Figure 6 for Figure 1 The diagram shows the conduction of the valve core assembly when the multi-way valve is in the first regeneration position;

[0024] Figure 7 for Figure 1 The diagram shows the conduction of the valve core assembly when the multi-way valve is in the slow wash position;

[0025] Figure 8 for Figure 1 The diagram shown is a schematic diagram of the conduction of the valve core assembly when the multi-way valve is in the second regeneration position.

[0026] Description of Figure Numbers:

[0027] 100. Multi-way valve; 20. Valve body; 21. Valve chamber; 40. Valve stem; 60. Valve core assembly; 61. Fixed valve disc; 612. First communicating hole; 614. Second communicating hole; 616. Slow wash channel; 63. Moving valve disc; 632. First end face; 634. Guide groove; 6341. First guide part; 6343. Second guide part; 6345. Third guide part; 636. Blocking part. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0031] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0032] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate 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 implementation methods.

[0034] See Figure 1 , Figure 1 A schematic diagram of the internal structure of a multi-way valve in one embodiment of the present application is shown. One embodiment of the present application provides a water softener (not shown). The water softener includes an ion exchange resin that removes calcium and magnesium ions from raw water, thereby reducing water hardness and providing users with soft water with low calcium and magnesium ion content. As described in the background art, the water softener includes an integrated water circuit, a water softening device and a salt supply device connected to the integrated water circuit. The integrated water circuit is equipped with a multi-way valve 100 for controlling the flow of water. The multi-way valve 100 generally has five working positions: water supply, backwash, regeneration, water replenishment, and forward wash.

[0035] When the multi-way valve 100 is in the water supply position, the water softener can soften the raw water to provide qualified softened water for users. When the multi-way valve 100 is in the backwash position, the raw water flushes the resin layer in the water softener from bottom to top, making it fluffy to achieve the purpose of strong flushing. When the multi-way valve 100 is in the regeneration position, the salt water in the salt supply device flows from bottom to top through the resin layer in the water softener to achieve the purpose of cleaning and ion exchange. When the multi-way valve 100 is in the water replenishment position, raw water enters the salt supply device to replenish the salt supply device. When the multi-way valve 100 is in the forward wash position, raw water flows from top to bottom through the resin layer of the water softener. The fluffy resin layer slowly settles under the action of water pressure, and dirt is precipitated while exchanging ions.

[0036] During the research process, the inventors found that the multi-way valve 100 with only five stations can only provide a high concentration of regeneration salt, so the regeneration rate of the resin is low, resulting in a small water output of the water softener. Moreover, the water softener lacks a slow wash function, and the soft water treatment process is relatively rough. In order to improve the regeneration rate of the resin and optimize the soft water treatment process, the multi-way valve 100 of the present application has five stations, namely water supply, backwash, regeneration, water replenishment and forward wash, and adds a regeneration station and a slow wash station. The two regeneration stations can provide two different regeneration salt concentrations, thereby improving the resin regeneration rate. The slow wash station allows the raw water to slowly flush the resin layer from bottom to top, taking away the broken resin and remaining dirt, thereby improving the utilization rate of the salt solution.

[0037] However, if the multi-way valve 100 has more stations, its structure will be more complicated accordingly. Therefore, in order to simplify the structure of the multi-way valve 100, the present application provides a multi-way valve 100 with a simple structure and rich functions.

[0038] In some embodiments, the multi-way valve 100 includes a valve body 20, a valve core assembly 60, and a valve stem 40. Specifically, the valve body 20 is a hollow shell-like structure, defining a valve cavity 21 with an open end. The valve core assembly 60 is housed within the valve cavity 21 of the valve body 20. The first axial end of the valve stem 40 extends into the valve cavity 21 and is in transmission connection with the valve core assembly 60. The second axial end of the valve stem 40 extends out of the valve cavity 21 and is connected to a drive unit. Thus, driven by the drive unit, the valve stem 40 can drive the valve core assembly 60 to switch between different states, thereby changing the working position of the multi-way valve 100 to achieve different functions.

[0039] Combine Figures 2 to 5 As shown, Figure 2 A schematic structural diagram of a movable valve plate of a multi-way valve in one embodiment of the present application is shown; Figure 3 A front view of a movable valve plate of a multi-way valve in an embodiment of the present application is shown; Figure 4 A schematic structural diagram of a fixed valve plate of a multi-way valve in one embodiment of the present application is shown; Figure 5 A structural schematic diagram of another angle of the fixed valve plate in an embodiment of the present application is shown.

[0040] The valve core assembly 60 includes a fixed valve disc 61 and a movable valve disc 63. The fixed valve disc 61 is fixedly installed in the valve cavity 21 and is located at the bottom of the valve cavity 21. The movable valve disc 63 is stacked above the fixed valve disc 61. The first axial end of the valve stem 40 is in transmission connection with the movable valve disc 63, and is driven by the driving unit to drive the movable valve disc 63 to rotate relative to the fixed valve disc 61. The movable valve disc 63 is defined by a guide groove 634, and the fixed valve disc 61 is defined by a first connecting hole 612 and multiple second connecting holes 614. During the rotation of the movable valve disc 63 relative to the fixed valve disc 61, the first connecting hole 612 can selectively connect to any of the second connecting holes 614 through the guide groove 634, thereby switching the valve core assembly 60 between different states.

[0041] Specifically, the fixed valve disc 61 has a disc-shaped structure, with a first communication hole 612 and a plurality of second communication holes 614 spaced apart circumferentially around the fixed valve disc 61, and all second communication holes 614 are located on the same side of the first communication hole 612. Specifically, in one embodiment, the first communication hole 612 curves and extends along the circumference of the fixed valve disc 61 in a fan-shaped manner.

[0042] In this embodiment, the fixed valve plate 61 defines three second communication holes 614. These three second communication holes 614 are located on the same side of the first communication hole 612, and each second communication hole 614 is circular or elliptical in shape. It is understood that the number and shape of the second communication holes 614 are not limited and can be provided as needed to meet different requirements.

[0043] The movable valve disc 63 is generally disc-shaped, similar in shape to the fixed valve disc 61, and has a first end surface 632 and a second end surface disposed opposite each other in the thickness direction (i.e., perpendicular to the bottom of the valve chamber 21). The first end surface 632 is provided with a guide groove 634 and a blocking portion 636. The blocking portion 636 divides the guide groove 634 into a first guide portion 6341, a second guide portion 6343, and a third guide portion 6345, which are interconnected in sequence.

[0044] Among them, the first guide portion 6341 and the third guide portion 6345 are spaced apart in the circumferential direction of the movable valve plate 63, the second guide portion 6343 extends longitudinally along the circumferential direction of the movable valve plate 63, and the second guide portion 6343 is respectively connected to the first guide portion 6341 and the second guide portion 6343 at opposite ends in the circumferential direction of the movable valve plate 63. The blocking portion 636 is located between the first guide portion 6341 and the third guide portion 6345, and in the radial direction of the movable valve plate 63, the blocking portion 636 is located on one side of the second guide portion 6343.

[0045] When the first end surface 632 of the movable valve disc 63 and the fixed valve disc 61 are in contact with each other, the orthographic projection of the first guide portion 6341 on the fixed valve disc 61 can overlap with the first communicating hole 612 to connect with the first communicating hole 612, and the orthographic projection of the third guide portion 6345 on the fixed valve disc 61 can selectively overlap with one of the second communicating holes 614 to connect with the second communicating hole 614. The orthographic projection of the blocking portion 636 on the fixed valve disc 61 can overlap with one of the second communicating holes 614 to cover the remaining second communicating holes 614 between the first communicating hole 612 and the second communicating hole 614 connected by the guide groove 634.

[0046] In this way, the guide groove 634 on the movable valve disc 63 forms a "gate"-shaped structure, allowing water in one of the second communicating holes 614 of the movable valve disc 63 to flow into the first communicating hole 612 in sequence through the third guide portion 6345, the second guide portion 6343, and the first guide portion 6341. The remaining second communicating holes 614 located between the interconnected second communicating holes 614 and the first communicating hole 612 are blocked by the blocking portion 636. Thus, the movable valve disc 63 can be driven by the valve stem 40 to rotate a small angle relative to the fixed valve disc 61, allowing the first communicating hole 612 to selectively connect to any second communicating hole 614 while simultaneously blocking the remaining second communicating holes 614 between the two, thereby achieving rapid switching between different working positions. This simplifies the structure of the valve core assembly 60 while enriching the functionality of the multi-way valve 100, reducing the design difficulty of the multi-way valve 100.

[0047] In one embodiment, the second guide portion 6343 is located on the side of the blocking portion 636 away from the outer edge of the movable valve plate 63. Therefore, while connecting the first guide portion 6341 and the third guide portion 6345, the projection of the second guide portion 6343 on the fixed valve plate 61 is staggered with the second connecting hole 614. The second guide portion 6343 only serves to connect the first guide portion 6341 and the second guide portion 6343, and will not cause the second connecting hole 614 that does not need to be connected to be in a conductive state.

[0048] As a preferred embodiment, in order to match the arrangement of the first connecting hole 612 and the second connecting hole 614, the outer contour formed by the guide groove 634 and the blocking portion 636 on the first end surface 632 is located in a virtual sector (such as Figure 3 The virtual sector extends along the circumference of the movable valve plate 63 (shown by the dashed line), and the center of the virtual sector coincides with the rotation center of the movable valve plate 63. It will be understood that the shape and size of the guide groove 634 are not limited thereto and can be set as needed to meet different requirements.

[0049] Combine Figures 6 to 8 As shown, Figure 6 A schematic diagram of the conduction of the valve core assembly when the multi-way valve in one embodiment of the present application is in the first regeneration position is shown; Figure 7 A schematic diagram of the conduction of the valve core assembly when the multi-way valve in one embodiment of the present application is in the slow wash position is shown; Figure 8 A schematic diagram of the conduction of the valve core assembly when the multi-way valve in one embodiment of the present application is in the second regeneration position is shown.

[0050] The following describes the conduction relationship between the guide groove 634 and the first connecting hole 612 and the second connecting hole 614, taking the multi-way valve 100 having a first regeneration station, a slow wash station and a second regeneration station as an example. It can be understood that the valve core assembly 60 of the present application can also be used to achieve conduction of other stations and is not limited to the above functions. It should be noted that in the following embodiments, a slow wash channel 616 is provided on the surface of the side of the fixed valve plate 61 away from the movable valve plate 63, and one end of the slow wash channel 616 is connected to one of the second connecting holes 614, and the second connecting hole 614 connected to the slow wash channel 616 is located between the other two second connecting holes 614. The slow wash channel 616 is used to connect to the raw water inlet end, and the raw water flowing into the raw water inlet end can flow into the second connecting hole 614 through the slow wash channel 616.

[0051] The first connecting hole 612 is used to connect to the softening device. Among the three second connecting holes 614, the second connecting hole 614 closest to the first connecting hole 612 is connected to one of the salt supply channels of the salt supply device, and the second connecting hole 614 farthest from the first connecting hole 612 is connected to another salt supply channel of the salt supply device. The second connecting hole 614 located between the above two second connecting holes 614 is connected to the raw water inlet end through the slow wash channel 616 opened on the fixed valve plate 61.

[0052] When the multi-way valve 100 is in the first regeneration position, the valve stem 40 drives the movable valve disc 63 to rotate to a first preset angle. At this time, the first guide portion 6341 of the guide groove 634 is connected to the end of the first connecting hole 612 away from the second connecting hole 614, and the third guide portion 6345 is connected to the second connecting hole 614 closest to the first connecting hole 612. Salt water with a first concentration flowing out of one of the salt supply channels of the salt supply device flows into the second connecting hole 614 closest to the first connecting hole 612, then passes through the third guide portion 6345, the second guide portion 6343, and the first guide portion 6341 of the guide groove 634 in sequence, flows into the first connecting hole 612, and finally flows into the resin layer in the water softener, achieving the purpose of cleaning and ion exchange.

[0053] When the multi-way valve 100 is in the slow-wash position, the valve stem 40 rotates the valve disc 63 to a second predetermined angle. At this point, the first guide portion 6341 of the guide groove 634 communicates with the middle portion of the first connecting hole 612, and the third guide portion 6345 communicates with the second connecting hole 614 located between the two second connecting holes 614. The blocking portion 636 between the first guide portion 6341 and the second guide portion 6343 covers and seals the second connecting hole 614 closest to the first connecting hole 612. Raw water from the raw water inlet flows through the slow-wash channel 616 defined in the fixed valve disc 61 into the second connecting hole 614 located between the two second connecting holes 614. The water then flows sequentially through the third guide portion 6345, the second guide portion 6343, and the first guide portion 6341 of the guide groove 634 into the first connecting hole 612, and finally into the resin layer within the water softener, removing any broken resin and remaining contaminants.

[0054] When the multi-way valve 100 is in the second regeneration position, the valve stem 40 drives the valve disc 63 to rotate to a third predetermined angle. At this point, the first guide portion 6341 of the guide groove 634 communicates with the end of the first connecting hole 612 closest to the second connecting hole 614, and the third guide portion 6345 communicates with the second connecting hole 614 farthest from the first connecting hole 612. The blocking portion 636 between the first guide portion 6341 and the second guide portion 6343 covers the two second connecting holes 614 closer to the first connecting hole 612, thereby sealing both. Salt water with a second concentration flowing out of the second salt supply channel of the salt supply device flows into the second connecting hole 614 farthest from the first connecting hole 612, then passes through the third guide portion 6345, the second guide portion 6343, and the first guide portion 6341 of the guide groove 634, flows into the first connecting hole 612, and finally flows into the resin layer within the water softener, achieving the purpose of cleaning and ion exchange.

[0055] In summary, driven by the valve stem 40, the movable valve disc 63 rotates relative to the fixed valve disc 61, allowing the first communicating hole 612 to selectively communicate with different second communicating holes 614, without requiring the second communicating holes 614 to be simultaneously connected to the first communicating hole 612 and blocked by the blocking portion 636. Because the guide groove 634 on the movable valve disc 63 forms a "door"-like structure, the communication state can be switched with only a small rotation angle, making the arrangement of the first communicating holes 612 and the second communicating holes 614 more compact. This, while enriching the functionality of the multi-way valve 100, simplifies the overall structure of the multi-way valve 100 and reduces the design difficulty of the multi-way valve 100.

[0056] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0057] The above-described embodiments merely represent several implementation methods of the present application. 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 a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A valve core assembly, characterized in that: The invention comprises a fixed valve plate (61) and a movable valve plate, wherein the movable valve plate has a first end face (632) and a second end face arranged opposite to each other, the first end face (632) is provided with a guide groove (634) and a blocking portion (636), the blocking portion (636) divides the guide groove (634) into a first guide portion (6341), a second guide portion (6343) and a third guide portion (6345) which are connected in sequence, the fixed valve plate (61) is attached to one side of the first end face of the movable valve plate, the fixed valve plate (61) is provided with a first communicating hole (612) and a plurality of second communicating holes (614), the first communicating hole (612) and the plurality of second communicating holes (614) are arranged at intervals in the circumferential direction of the fixed valve plate (61), and the plurality of second communicating holes (614) are located on the same side of the first communicating hole (612); The first communicating hole (612) can selectively communicate with any one of the second communicating holes (614) through the guide groove (634), and the blocking portion (636) is used to cover the remaining second communicating holes (614) between the first communicating hole (612) and the second communicating hole (614) that are mutually communicated through the guide groove (634).

2. The valve core assembly according to claim 1, characterized in that The first guide portion (6341) and the third guide portion (6345) are spaced apart in the circumferential direction of the movable valve plate, the blocking portion (636) is located between the first guide portion (6341) and the third guide portion (6345), and in the radial direction of the movable valve plate, the blocking portion (636) is located on one side of the second guide portion (6343).

3. The valve core assembly according to claim 1, characterized in that The outer contour formed by the guide groove (634) and the blocking portion (636) on the first end surface (632) is located within a virtual sector shape, and the virtual sector shape is curved and extends along the circumference of the movable valve plate.

4. The valve core assembly according to claim 1, characterized in that The first guide portion (6341) is used to connect to the first connecting hole (612), and the third guide portion (6345) is used to selectively connect to any one of the second connecting holes (614). The projection of the second guide portion (6343) on the fixed valve plate (61) is staggered with the second connecting hole (614).

5. The valve core assembly according to claim 1, characterized in that: The first communicating hole (612) is in the shape of a fan that bends and extends along the circumference of the fixed valve plate (61).

6. A multi-way valve, characterized in that: The multi-way valve comprises the valve core assembly according to any one of claims 1 to 5.

7. The multi-way valve according to claim 6, characterized in that: The multi-way valve also includes a valve body (20) and a valve stem (40), the valve core assembly is accommodated in the valve body (20), the first axial end of the valve stem (40) extends into the valve body (20) and is transmission-connected with the movable valve plate, and the movable valve plate can rotate relative to the fixed valve plate (61) under the drive of the valve stem (40) so that the first connecting hole (612) can be selectively connected to any one of the second connecting holes (614) through the guide groove (634).

8. A water softener, characterized in that: The water softener includes the multi-way valve according to any one of claims 6 or 7.

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