multi-way valve

Abstract

The utility model provides a kind of multi-way valve, comprising: valve body, valve body includes body and end cap, body and end cap cooperation forms valve cavity, end cap is provided with multiple flow-through port;Valve core, valve core is arranged in valve cavity, valve core has rotating shaft, and the end of valve core has communicating port, valve core can rotate around rotating shaft;Sealing assembly, sealing assembly is sleeved in the one end of valve core with communicating port, sealing assembly has ring part and support part, ring part and support part are all sealed with end cap cooperation, ring part is annular and is used to seal the gap between communicating port and flow-through port, support part includes two support sections, support section at least partially and the periphery of flow-through port abut;The one end of sealing assembly close to rotating shaft has limit section, and / or, the one end of sealing assembly away from rotating shaft has limit section, to limit the rotation of sealing assembly around communicating port. The technical scheme of the application can solve the problem of the multi-way valve in the prior art that is prone to overturning during switching.

Description

Technical Field

[0001] This utility model relates to the field of multi-way valve technology, and more specifically, to a multi-way valve. Background Technology

[0002] Currently, multi-way valves are commonly used to control the flow path switching of fluids. A multi-way valve consists of a valve body and a valve core. The valve body has multiple flow ports on its side wall, and the valve core has a connecting port. The valve core rotates within the valve body to switch the connecting port between multiple flow ports, thereby switching the flow path.

[0003] The valve body typically contains a high-pressure fluid, while the valve core usually carries a low-pressure fluid. A flow port connected to the valve core is inserted into the system's low-pressure piping, and a sealing ring is fitted at this port to seal the gap between the valve core and the valve body, preventing fluid leakage. However, when the valve core rotates, the flow port connected to the system's low-pressure piping connects to the high-pressure chamber inside the valve body during the valve core's rotation. At this time, the seal coinciding with the flow port is subjected to the combined force of the high-pressure and low-pressure fluids, disrupting the seal's force balance. This causes the seal to deflect towards the flow port, potentially jamming it and affecting the normal rotation of the valve core. It may even break, compromising the sealing performance of the multi-way valve. Existing technology incorporates a support structure on the seal to prevent deflection. However, the friction between the seal and the valve body during the valve core's rotation can also cause the seal to rotate around the valve core's connection port, affecting the stability of the support structure's fit with the valve body and potentially leading to support failure. Utility Model Content

[0004] This invention provides a multi-way valve to solve the problem that multi-way valves in the prior art are prone to flipping during switching.

[0005] This utility model provides a multi-way valve, comprising: a valve body, the valve body including a main body and an end cap, the main body and the end cap forming a valve cavity, the end cap having multiple flow ports; a valve core, the valve core disposed within the valve cavity, the valve core having a rotating shaft, and the end of the valve core having a connecting port, the valve core being able to rotate around the rotating shaft so that the connecting port can selectively connect with the flow ports; a sealing assembly, the sealing assembly being sleeved on the end of the valve core having the connecting port, the sealing assembly having a ring portion and a support portion, both the ring portion and the support portion sealingly engaging with the end cap, the ring portion being annular and used to seal the gap between the connecting port and the flow ports, the support portion including two support sections, the two support sections being disposed on the outer periphery of the ring portion and respectively disposed on both sides of the ring portion, during the rotation of the valve core, the support sections at least partially abutting against the periphery of the flow ports; the sealing assembly having a limiting section at the end near the rotating shaft, the limiting section engaging with the rotating shaft, and / or, the sealing assembly having a limiting section at the end away from the rotating shaft, the limiting section engaging with the valve body, to restrict the rotation of the sealing assembly around the connecting port.

[0006] Furthermore, the end faces of the limiting section and the supporting section facing the end cap are coplanar.

[0007] Furthermore, the limiting sections on the two support sections extend toward each other and are spaced apart from each other.

[0008] Furthermore, the limiting section is set on the support section.

[0009] Furthermore, the limiting section is located at one end of the support section near the rotating shaft, and a receiving space is formed between the side walls of the limiting sections of the two supports near the rotating shaft, with the rotating shaft located within the receiving space.

[0010] Furthermore, the limiting section is located at the end of the support section away from the rotation axis, and the limiting sections of the two supports extend towards or away from each other.

[0011] Furthermore, along the extension direction of the rotation axis, the projection of the limiting segment does not coincide with the projection of the flow port.

[0012] Furthermore, the sealing assembly includes a reinforcing member and a sealing member, with the sealing member disposed on the side of the reinforcing member facing the end cap. The reinforcing member and the sealing member are fixedly connected, and the stiffness of the reinforcing member is greater than that of the sealing member.

[0013] Furthermore, a mounting groove is provided on the side of the reinforcing member facing the end cover, and the sealing member is fixedly installed in the mounting groove. The sealing member is injection molded through the mounting groove.

[0014] Furthermore, the support section and / or the limiting section are provided with a protrusion on the side facing the end cover, and the support section and / or the limiting section abuts against the end cover through the protrusion.

[0015] Furthermore, the main body is provided with a first flow port and a second flow port, and multiple flow ports including a third flow port and a fourth flow port. The valve core has a valve core cavity, one end of which is connected to the second flow port, and the other end of which is connected to the third or fourth flow port. The valve core rotates around the central axis of the second flow port. When the valve core cavity is connected to the third flow port, the valve core cavity, the second flow port, and the third flow port form a first flow channel. The valve cavity, the first flow port, and the fourth flow port are connected and form a second flow channel spaced apart from the first flow channel. When the valve core cavity is connected to the fourth flow port, the valve core cavity, the second flow port, and the fourth flow port form a first flow channel. The valve cavity, the first flow port, and the third flow port are connected and form a second flow channel spaced apart from the first flow channel. The first flow channel is used to flow low-pressure fluid, and the second flow channel is used to flow high-pressure fluid.

[0016] By applying the technical solution of this application, when the valve core's connecting port is connected to the flow port and the valve core remains stationary, the ring portion can seal the gap between the connecting port and the flow port, preventing the first flow channel from connecting with the second flow channel. During the valve core's rotation and passage through the flow port, the support section abuts against the periphery of the flow port, providing multiple support points for the overall sealing assembly. This prevents the sealing assembly from deflecting towards the flow port, inhibits its flipping, and prevents it from getting stuck in the flow port and breaking. This reduces the maintenance cost of the multi-way valve and improves its operational stability. By setting a limiting section, a non-rotation structure is formed between the limiting section and the multi-way valve itself, preventing the sealing assembly from rotating relative to the valve core. This ensures that the support section can stably maintain contact with the flow port, preventing the support section from failing to provide support and improving the stability of the sealing assembly's support. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 An exploded view of the structure of the multi-way valve provided by this utility model is shown;

[0019] Figure 2 This invention provides a schematic diagram of the structure of a multi-way valve from one perspective.

[0020] Figure 3 This invention provides a schematic diagram of the structure of a multi-way valve from one perspective.

[0021] Figure 4 A cross-sectional view of the multi-way valve provided by this utility model is shown;

[0022] Figure 5 A schematic diagram showing the seal forming the fulcrum shaft in a conventional technical solution is shown;

[0023] Figure 6 A structural diagram of the sealing assembly provided by this utility model is shown;

[0024] Figure 7 An exploded view of the sealing assembly provided by this utility model is shown;

[0025] Figure 8 It shows Figure 4 A magnified view of a portion of point A in the middle.

[0026] The above figures include the following reference numerals:

[0027] 01. Pivot axis;

[0028] 100. Valve body; 101. Valve cavity; 102. Flow port; 102D. First flow port; 102S. Second flow port; 102E. Third flow port; 102C. Fourth flow port; 110. Body; 120. End cap;

[0029] 200, Valve core; 201, Connecting port; 210, Rotating shaft;

[0030] 300. Sealing assembly; 301. Ring; 302. Support section; 303. Limiting section; 304. Receiving space; 310. Reinforcing member; 311. Mounting groove; 320. Seal;

[0031] 330. Sealing ring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] like Figures 1 to 8 As shown, this embodiment of the present invention provides a multi-way valve, which includes a valve body 100, a valve core 200, and a sealing assembly 300. The valve body 100 includes a main body 110 and an end cap 120, which cooperate to form a valve cavity 101. The end cap 120 has multiple flow ports 102. The valve core 200 is disposed within the valve cavity 101, has a rotating shaft 210, and its end has a connecting port 201. The valve core 200 can rotate around the rotating shaft 210, allowing the connecting port 201 to selectively connect with the flow ports 102. The sealing assembly 300 is sleeved on one end of the valve core 200 that has a communication port 201. The sealing assembly 300 has a ring portion 301 and a support portion. Both the ring portion 301 and the support portion are sealed to the end cover 120. The ring portion 301 is annular and is used to seal the gap between the communication port 201 and the flow port 102. The support portion includes two support sections 302. The two support sections 302 are disposed on the outer periphery of the ring portion 301 and respectively disposed on both sides of the ring portion 301. During the rotation of the valve core 200, the support sections 302 at least partially abut against the periphery of the flow port 102.

[0034] like Figures 1 to 4As shown, the multi-way valve body 110 is provided with a first flow port 102D and a second flow port 102S, and the end cap 120 is provided with a third flow port 102E and a fourth flow port 102C. The valve core 200 has a valve core cavity, one end of which is connected to the second flow port 102S, and the other end of which is connected to either the third flow port 102E or the fourth flow port 102C. When the valve core cavity is connected to the third flow port 102E, the valve core cavity, the second flow port 102S, and the third flow port 102C are connected. 2E forms a first flow channel. The valve cavity, the first flow port 102D, and the fourth flow port 102C are connected to form a second flow channel spaced apart from the first flow channel. When the valve core cavity is connected to the fourth flow port 102C, the valve core cavity, the second flow port 102S, and the fourth flow port 102C form the first flow channel. The valve cavity, the first flow port 102D, and the third flow port 102E are connected to form a second flow channel spaced apart from the first flow channel. The first flow channel is used for the flow of low-pressure fluid, and the second flow channel is used for the flow of high-pressure fluid. During the rotation of the valve core 200, the valve core cavity is always filled with low-pressure fluid, while the valve cavity 101 is always filled with high-pressure fluid. The sealing assembly 300 is subjected to the pressure of the high-pressure fluid and will abut against the end cap 120 to achieve a seal and prevent internal leakage between the valve core 200 and the valve cavity 101.

[0035] However, during the rotation of the valve core 200, the third flow port 102E or the fourth flow port 102C will partially connect with the valve cavity 101. Before the switching process is complete, the third flow port 102E or the fourth flow port 102C is the low-pressure section, and the valve cavity 101 is the high-pressure section. (Refer to...) Figure 5 As shown, in the conventional technical solution, the support point formed by the edge of the seal and the third flow port 102E or the fourth flow port 102C will form a fulcrum shaft 01. The sealing component 300 on one side of the fulcrum shaft 01 is located in the high-low pressure connection section, and the seal on the other side is located in the high pressure section. At this position, the resultant force of the high pressure fluid and the low pressure fluid on the suspended section will be greater than the pressure that the sealing section only receives from the high pressure chamber. The sealing components 300 on both sides of the fulcrum shaft 01 are subjected to different forces. And taking the center of mass of the suspended section and the sealing end as the force point, the distance between the center of mass of the suspended section and the sealing end and the fulcrum shaft 01 is different, which will apply a deflection torque to the sealing component 300. The sealing component 300 will generate a force to flip towards the third flow port 102E or the fourth flow port 102C, and flip towards the inside of the third flow port 102E or the fourth flow port 102C.

[0036] By applying the technical solution of this application, when the connecting port 201 of the valve core 200 is connected to the flow port 102 and the valve core 200 remains stationary, the ring portion 301 can seal the gap between the connecting port 201 and the flow port 102, preventing the first flow channel from connecting with the second flow channel. During the rotation of the valve core 200 and its passage through the flow port 102, the support section 302 abuts against the periphery of the flow port 102, providing multiple support points for the overall sealing assembly 300. This prevents the sealing assembly 300 from deflecting towards the flow port 102, prevents the sealing assembly 300 from flipping, and prevents the sealing assembly 300 from getting stuck in the flow port 102 and breaking. This reduces the maintenance cost of the multi-way valve and improves the stability of its use.

[0037] Furthermore, in some embodiments of this application, the sealing assembly 300 has a limiting section 303 at the end near the rotating shaft 210. The limiting section 303 engages with the rotating shaft 210, and the rotating shaft 210 can stop the limiting section 303 to restrict the rotation of the sealing assembly 300 relative to the valve core 200. In still other embodiments of this application, the support section 302 has a limiting section 303 at the end away from the rotating shaft 210. The limiting section 303 engages with the valve body 100, and the valve body 100 can stop the limiting section 303 to restrict the rotation of the sealing assembly 300 around the communication port 201.

[0038] In other embodiments of this application, a limiting segment 303 may be provided at both the end of the sealing assembly 300 near the rotating shaft 210 and the end away from the rotating shaft 210. The limiting segment 303 is in limiting cooperation with the rotating shaft 210 and the valve body 100, thereby restricting the rotation of the sealing assembly 300 around the communication port 201 by the rotating shaft 210 and the valve body 100.

[0039] By setting a limiting section 303 at the end of the support section 302, a non-rotation structure can be formed between the limiting section 303 and the multi-way valve itself to prevent the sealing assembly 300 from rotating relative to the valve core 200. This ensures that the support section 302 can stably maintain contact and support with the flow port 102, preventing the support section 302 from failing to play its supporting role and improving the stability of the sealing assembly 300 support.

[0040] Specifically, in some embodiments of this application, the limiting segment 303 may be disposed on the end of the support segment 302; in other embodiments of this application, the limiting segment 303 may also be directly disposed on the ring portion 301.

[0041] Furthermore, the end faces of the limiting segment 303 and the support segment 302 facing the end cover 120 are coplanar, and the extending directions of the limiting segment 303 and the support segment 302 are different. With this arrangement, the limiting segment 303 will also maintain contact with the end cover 120. This arrangement can enable the limiting segment 303 and the support segment 302 to form a limiting surface together in other directions, further improving the support capacity of the support part.

[0042] Specifically, in embodiments where both ends of the support section 302 are provided with limiting sections 303, when the support section 302 near the rotating shaft 210 abuts against the rotating shaft 210 to limit the rotation of the sealing assembly 300, the support section 302 away from the rotating shaft 210 can form a certain gap with the inner wall of the valve body 100. Similarly, when the support section 302 away from the rotating shaft 210 abuts against the inner wall of the valve body 100 to limit the rotation of the sealing assembly 300, the support section 302 near the rotating shaft 210 can form a certain gap with the rotating shaft 210. In this way, when one of the limiting sections 303 achieves the anti-rotation function, it can reduce the contact area between the sealing assembly 300 and the valve body 100, and reduce the friction force experienced by the valve core 200 when it rotates. The other limiting section 303 can enhance the supporting effect of the support section 302.

[0043] In some embodiments of this application, the limiting segments 303 on the two support portions extend toward each other and are spaced apart. This arrangement can reduce the contact area between the limiting segments 303 on the two support portions and the end cap 120, further reduce the contact area between the sealing assembly 300 and the end cap, reduce the friction force on the valve core 200 when it rotates, and ensure the rapid switching of the multi-way valve.

[0044] In other embodiments of this application, the two limiting segments 303 may also be connected to each other to improve the structural strength of the overall support.

[0045] Specific reference Figure 6 As shown, when the limiting segment 303 is located at one end of the support segment 302 near the rotating shaft 210, a receiving space 304 is formed between the sidewalls of the limiting segments 303 of the two supports near the rotating shaft 210, and the rotating shaft 210 is located within the receiving space 304. With this arrangement, the rotating shaft 210 can provide another limiting point for the sealing assembly 300 on the outside of the ring portion 301, thereby preventing the sealing assembly 300 from rotating.

[0046] In other embodiments of this application, the limiting segment 303 is disposed at one end of the support segment 302 away from the rotation shaft 210, and the limiting segments 303 of the two supports extend in opposite directions. With this arrangement, the support segment 302 can be disposed closer to the rotation shaft 210, reducing the diameter of the circle formed by the rotation of the outer edge of the sealing assembly 300, thereby adaptively reducing the diameter of the end cap 120, realizing the miniaturization of the multi-way valve, and reducing the space occupied by the multi-way valve.

[0047] Specifically, along the extension direction of the rotation axis 210, the projection of the limiting segment 303 does not coincide with the projection of the flow port 102. That is, during the rotation of the valve core 200, the limiting segment 303 will not pass over the flow port 102, so as to reduce the possibility of interference between the limiting segment 303 and the flow port 102 and ensure the normal rotation of the valve core 200.

[0048] In some embodiments of this application, the support section 302 and / or the limiting section 303 are provided with protrusions on the side facing the end cover 120. The support section 302 and / or the limiting section 303 abut against the end cover 120 through the protrusions. This can reduce the contact area between the support section 302 and / or the limiting section 303 and the end cover 120, thereby reducing the frictional force from the end cover 120 on the sealing assembly 300 when it rotates, thereby reducing the resistance that the valve core 200 needs to overcome when rotating and improving the switching speed of the valve core 200.

[0049] Referring to the figure, the sealing assembly 300 includes a reinforcing member 310 and a sealing member 320. The sealing member 320 is disposed on the side of the reinforcing member 310 facing the end cover 120. The reinforcing member 310 and the sealing member 320 are fixedly connected. The stiffness of the reinforcing member 310 is greater than that of the sealing member 320. With this arrangement, the reinforcing member 310 can enhance the structural strength of the sealing member 320. By placing the reinforcing member 310 externally on the sealing member 320, the sealing member 320 is prevented from flipping into the flow port 102 and breaking when rotating with the valve core 200, thus ensuring the overall structural strength of the sealing assembly 300.

[0050] Specifically, the seal 320 can be made of PTFE material, which reduces the impact on the rotation of the valve core 200 while ensuring sealing performance.

[0051] Specifically, the reinforcing member 310 can be made of metal, such as steel or copper, to ensure that the reinforcing member 310 strengthens the structural strength of the sealing assembly 300.

[0052] like Figure 6 and Figure 7As shown, the reinforcing member 310 has a mounting groove 311 on the side facing the end cover 120, and the sealing member 320 is fixedly disposed within the mounting groove 311. This arrangement allows the sealing member 320 and the reinforcing member 310 to form a fitted structure, fixing them together and improving their overall strength. Furthermore, direct injection molding within the mounting groove 311 improves the fitting accuracy between the sealing member 320 and the reinforcing member 310.

[0053] Furthermore, the width-to-height ratio of the mounting groove 311 is between 0.9 and 1.1. Because the reinforcing member 310 formed by metal processing and the sealing member 320 formed by plastic processing have different coefficients of thermal expansion, during the cooling process of the sealing member 320 injection molding, the reinforcing member 310 and the sealing member 320 may separate in the width or height direction of the mounting groove 311, or even cause the sealing member 320 to crack or other process problems. In this application, by setting the width-to-height ratio of the mounting groove 311 to be between 0.9 and 1.1, the sealing member 320 can avoid a large deformation difference in the width and height directions of the mounting groove 311 during the cooling and molding process, ensuring the effective fit between the sealing member 320 and the mounting groove 311. Specifically, the width-to-height ratio of the mounting groove 311 can be 0.9, 1, or 1.1.

[0054] Furthermore, such as Figure 4 and Figure 8 As shown, the sealing assembly 300 also has a sealing ring 330, which is disposed between the outer wall of the valve core 200 and the inner wall of the reinforcing member 310. This arrangement can seal the gap between the reinforcing member 310 and the valve core 200, preventing fluid in the valve cavity 101 from entering the valve core 200 through the gap between the reinforcing member 310 and the valve core 200, thus ensuring the sealing performance of the multi-way valve.

[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0057] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0058] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0059] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-way valve, characterized in that, The multi-way valve includes: The valve body (100) includes a main body (110) and an end cap (120). The main body (110) and the end cap (120) cooperate to form a valve cavity (101). The end cap (120) is provided with a plurality of flow ports (102). A valve core (200) is disposed in the valve cavity (101). The valve core (200) has a rotating shaft (210) and a communication port (201) at its end. The valve core (200) is rotatable about the rotating shaft (210) so that the communication port (201) can be selectively connected to the flow port (102). A sealing assembly (300) is sleeved on one end of the valve core (200) having the communication port (201). The sealing assembly (300) has an annular portion (301) and a support portion. Both the annular portion (301) and the support portion are sealed to the end cap (120). The annular portion (301) is annular and is used to seal the gap between the communication port (201) and the flow port (102). The support portion includes two support sections (302). The two support sections (302) are disposed on the outer periphery of the annular portion (301) and respectively disposed on both sides of the annular portion (301). During the rotation of the valve core (200), the support sections (302) at least partially abut against the periphery of the flow port (102). The sealing assembly (300) has a limiting section (303) at one end near the rotating shaft (210), the limiting section (303) being in a limiting engagement with the rotating shaft (210), and / or, the sealing assembly (300) has the limiting section (303) at one end away from the rotating shaft (210), the limiting section (303) being in a limiting engagement with the valve body (100) to restrict the sealing assembly (300) from rotating around the communication port (201).

2. The multi-way valve according to claim 1, characterized in that, The limiting segment (303) and the supporting segment (302) are coplanar on the side facing the end cap (120).

3. The multi-way valve according to claim 1, characterized in that, The limiting segments (303) on the two support portions extend toward each other and are spaced apart from each other.

4. The multi-way valve according to claim 1, characterized in that, The limiting segment (303) is disposed on the supporting segment (302).

5. The multi-way valve according to claim 1, characterized in that, The limiting segment (303) is disposed at one end of the support segment (302) near the rotating shaft (210), and a receiving space (304) is formed between the side walls of the limiting segments (303) of the two supports near the rotating shaft (210), and the rotating shaft (210) is located in the receiving space (304).

6. The multi-way valve according to claim 1, characterized in that, The limiting segment (303) is disposed at one end of the support segment (302) away from the rotating shaft (210), and the limiting segments (303) of the two support portions extend towards each other or away from each other.

7. The multi-way valve according to claim 1, characterized in that, Along the extension direction of the rotation axis (210), the projection of the limiting segment (303) does not coincide with the projection of the flow port (102).

8. The multi-way valve according to claim 1, characterized in that, The sealing assembly (300) includes a reinforcing member (310) and a sealing member (320). The sealing member (320) is disposed on the side of the reinforcing member (310) facing the end cap (120). The reinforcing member (310) and the sealing member (320) are fixedly connected. The stiffness of the reinforcing member (310) is greater than that of the sealing member (320).

9. The multi-way valve according to claim 8, characterized in that, The reinforcing member (310) has a mounting groove (311) on the side facing the end cap (120), and the sealing member (320) is fixedly installed in the mounting groove (311). The sealing member (320) is injection molded through the mounting groove (311).

10. The multi-way valve according to claim 1, characterized in that, The support section (302) and / or the limiting section (303) are provided with a protrusion on the side facing the end cap (120), and the support section (302) and / or the limiting section (303) abut against the end cap (120) through the protrusion.

11. The multi-way valve according to claim 1, characterized in that, The body (110) is provided with a first flow port (102D) and a second flow port (102S). The plurality of flow ports (102) include a third flow port (102E) and a fourth flow port (102C). The valve core (200) has a valve core cavity. One end of the valve core cavity is connected to the second flow port (102S), and the other end of the valve core cavity is connected to either the third flow port (102E) or the fourth flow port (102C). The valve core (200) rotates around the central axis of the second flow port (102S). When the valve core cavity is connected to the third flow port (102E), the valve core cavity and the second flow port (102S) are connected. The valve core cavity (101), the first flow port (102D), and the fourth flow port (102C) form a first flow channel. The valve core cavity (101), the first flow port (102D), and the fourth flow port (102C) are connected to form a second flow channel spaced apart from the first flow channel. When the valve core cavity is connected to the fourth flow port (102C), the valve core cavity, the second flow port (102S), and the fourth flow port (102C) form a first flow channel. The valve core cavity (101), the first flow port (102D), and the third flow port (102E) are connected to form a second flow channel spaced apart from the first flow channel. The first flow channel is used to flow low-pressure fluid, and the second flow channel is used to flow high-pressure fluid.

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