Multi-way valve

Abstract

The utility model provides a multi-way valve, which comprises a valve body, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core, a valve core and a valve core, and is characterized in that the valve core is provided with a plurality of circulation ports; a communicating opening is formed in the end of the valve element, and the valve element is rotatably arranged in the valve cavity so that the communicating opening can selectively communicate with the circulating opening; the sealing assembly is arranged at the end, provided with the communicating opening, of the valve element in a sleeving mode, in the process that the valve element rotates and passes through the circulating opening, the sealing assembly is provided with a suspended section and a sealing section which are oppositely arranged, the sealing section abuts against the end cover, and the projection of the suspended section coincides with the projection of the circulating opening in the axial direction; the side, away from the central axis of the communication port, of the suspended section abuts against the periphery of the circulation port to form fulcrums, every two adjacent fulcrums are connected to form a fulcrum shaft, and the mass center of the suspended section is located on the side, close to the central axis of the communication port, of the fulcrum shaft. By means of the technical scheme, the problem that in the switching process of a multi-way valve in the prior art, a sealing piece is prone to being damaged can be solved.

Description

Technical Field

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

[0002] Currently, multi-way valves typically consist of a valve body and a valve core. The valve body has multiple flow ports on its side wall, while the valve core has a connecting port. The valve core is rotatably mounted within the valve body so that the connecting port can connect with different flow ports, thereby enabling the multi-way valve to switch flow paths. To ensure that the interior of the valve body and the valve core do not communicate during use, a sealing element is usually fitted onto the valve core to achieve internal sealing.

[0003] However, in existing technologies, the valve body typically contains a high-pressure fluid, while the valve core typically contains a low-pressure fluid. The flow port connected to the valve core is connected to the system's low-pressure pipeline. This means that during valve core rotation, the flow port in the low-pressure pipeline connects to the high-pressure chamber inside the valve body. At this point, 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 and causing it to deflect axially. This allows the seal to enter the flow port. As the valve core continues to rotate, the seal may bend or even break due to obstruction from the inner wall of the flow port, causing internal sealing failure in the multi-way valve and severely impacting its normal operation. Utility Model Content

[0004] This invention provides a multi-way valve to solve the problem that the seals of existing multi-way valves are prone to damage during switching.

[0005] This utility model provides a multi-way valve, which includes: a valve body, comprising 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 end of the valve core having a communication port, the valve core being rotatably disposed within the valve cavity so that the communication port can selectively communicate with the flow ports; and a sealing assembly, the sealing assembly being sleeved on the end of the valve core having the communication port, wherein during the rotation of the valve core and its passage through the flow port, the sealing assembly has a suspended section and a sealing section arranged opposite to each other, the sealing section abutting against the end cap, the suspended section coinciding with the axial projection of the flow port, the side of the suspended section away from the central axis of the communication port abutting against the periphery of the flow port to form a fulcrum, two adjacent fulcrums being connected to form a fulcrum axis, and the center of mass of the suspended section being located on the side of the fulcrum axis closer to the central axis of the communication port.

[0006] Furthermore, the sealing assembly includes an annular portion and a support portion. The support portion is located on the outer periphery of the annular portion. During the rotation of the valve core relative to the flow port, the axial projection of the support portion and the periphery of the flow port coincides, and the end of the support portion away from the communication port is always in contact with the end cover.

[0007] Furthermore, the axial projection of the sealing assembly is an axisymmetric figure.

[0008] Furthermore, the sealing assembly includes a reinforcing member and a sealing member, which are fixedly connected, and the stiffness of the reinforcing member is greater than that of the sealing member.

[0009] Furthermore, the reinforcing member has a receiving groove located on the side of the reinforcing member near the end cap, and the sealing member is disposed within the receiving groove.

[0010] Furthermore, the sealing assembly also has a sealing ring, which is disposed between the outer wall of the valve core and the inner wall of the reinforcing member.

[0011] Furthermore, an anti-rotation structure is provided between the sealing assembly and the valve body and / or valve core to limit the rotation of the sealing assembly around the communication port.

[0012] Furthermore, there is a rotating shaft between the valve core and the end cover, the valve core can rotate around the rotating shaft, the sealing assembly has an anti-rotation groove, the rotating shaft is located in the anti-rotation groove, and the anti-rotation groove forms an anti-rotation structure.

[0013] Furthermore, the anti-rotation groove is fitted with a clearance fit to the rotating shaft.

[0014] Furthermore, a snap-fit ​​protrusion and a snap-fit ​​groove are provided between the sealing component and the valve core, and the snap-fit ​​protrusion and the snap-fit ​​groove engage to form an anti-rotation structure.

[0015] The main body is provided with a first connecting port and a second connecting port, and multiple flow ports including a third connecting port and a fourth connecting port. The valve core has a valve core cavity, one end of which is connected to the second connecting port, and the other end of which is connected to the third or fourth connecting port. When the valve core cavity is connected to the third connecting port, the valve core cavity, the second connecting port, and the third connecting port form a first flow channel, and the valve cavity, the first connecting port, and the fourth connecting port 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 connecting port, the valve core cavity, the second connecting port, and the fourth connecting port form a first flow channel, and the valve cavity, the first connecting port, and the third connecting port 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.

[0016] By applying the technical solution of this application, during the rotation of the valve core and its passage through the flow port, the suspended section formed by the sealing assembly can have its center of mass and the sealing section positioned on the same side of the fulcrum axis when forming a fulcrum axis with the flow port. Thus, the theoretical resultant force point of the suspended section will be on the same side as the sealing section. After the sealing assembly is subjected to force, the force on the side of the sealing assembly closer to the center of the flow port on the fulcrum axis will be much greater than the force on the side away from the center of the flow port, meaning that no torque will be generated that causes it to flip into the flow port, preventing the sealing assembly from flipping. Compared to traditional technical solutions, the technical solution in this application essentially combines the force on the suspended section to one side of the sealing section by moving the fulcrum axis outward, preventing the generation of a flipping torque, thereby preventing the sealing assembly from flipping, preventing the sealing assembly from getting stuck in the flow port and breaking, reducing the maintenance cost of the multi-way valve, and improving the stability of the multi-way valve in use. 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 multi-way valve provided by this utility model is shown;

[0019] Figure 2 A cross-sectional view of the multi-way valve provided by this utility model is shown;

[0020] Figure 3 A schematic diagram showing the fulcrum axis formed between the seal and the flow port in a conventional scheme is shown;

[0021] Figure 4 This invention provides a schematic diagram of the multi-way valve from one perspective.

[0022] Figure 5 This shows a structural schematic diagram of the multi-way valve provided by this utility model from another perspective;

[0023] Figure 6 A schematic diagram showing the formation of a fulcrum axis between the seal and the flow port in the first embodiment provided by this utility model is shown;

[0024] Figure 7 A schematic diagram showing the formation of a fulcrum axis between the seal and the flow port in the second embodiment provided by this utility model is shown;

[0025] Figure 8 A schematic diagram showing the formation of a fulcrum axis between the seal and the flow port in the third embodiment provided by this utility model is shown;

[0026] Figure 9A schematic diagram showing the formation of a fulcrum axis between the seal and the flow port in the fourth embodiment provided by this utility model is shown;

[0027] Figure 10 A schematic diagram showing the formation of a fulcrum axis between the seal and the flow port in the fifth embodiment provided by this utility model is shown;

[0028] Figure 11 It shows Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 12 A schematic diagram of the fit between the sealing element and the reinforcing element in the first embodiment of this utility model is shown;

[0030] Figure 13 A top view of the reinforcing member shown in the first embodiment of the present invention is shown;

[0031] Figure 14 A schematic diagram of the valve core structure in one embodiment of the present invention is shown;

[0032] Figure 15 A schematic diagram of the reinforcing member in one embodiment of the present invention is shown;

[0033] Figure 16 A schematic diagram of the valve core structure is shown in another embodiment of this utility model;

[0034] Figure 17 A structural schematic diagram of the reinforcing member in another embodiment of the present invention is shown.

[0035] The above figures include the following reference numerals:

[0036] 01. Pivot shaft; 02. Snap-fit ​​protrusion; 03. Snap-fit ​​groove;

[0037] 100, Valve body; 101, Valve cavity; 110, Body; 120, End cap; 121, Flow port; 121D, First connecting port; 121S, Second connecting port; 121E, Third connecting port; 121C, Fourth connecting port;

[0038] 200, Valve core; 210, Connecting port; 220, Rotating shaft;

[0039] 300, sealing assembly; 301, annular portion; 302, support portion; 303, anti-rotation groove; 310, seal; 320, reinforcement; 321, receiving groove; 322, mounting groove; 330, sealing ring; 340, elastic element. Detailed Implementation

[0040] 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.

[0041] like Figures 1 to 10 As shown, this embodiment of the utility model 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 121. The valve core 200 has a connecting port 210 at its end, and the valve core 200 is rotatably disposed within the valve cavity 101 so that the connecting port 210 can selectively communicate with the flow ports 121. The sealing assembly 300 is sleeved on one end of the valve core 200 with the communication port 210. During the rotation of the valve core 200 and its passage through the flow port 121, the sealing assembly 300 has a suspended section and a sealing section arranged opposite to each other. The sealing section abuts against the end cover 120, and the suspended section coincides with the axial projection of the flow port 121. The side of the suspended section away from the central axis of the communication port 210 abuts against the periphery of the flow port 121 to form a fulcrum. Two adjacent fulcrums are connected to form a fulcrum shaft 01. The center of mass of the suspended section is located on the side of the fulcrum shaft 01 close to the central axis of the communication port 210.

[0042] like Figure 4 and Figure 5As shown, the body 110 is provided with a first communication port 121D and a second communication port 121S. Multiple flow ports 121 include a third communication port 121E and a fourth communication port 121C. The valve core 200 has a valve core cavity. One end of the valve core cavity is connected to the second communication port 121S, and the other end of the valve core cavity is connected to either the third communication port 121E or the fourth communication port 121C. When the valve core cavity is connected to the third communication port 121E, the valve core cavity, the second communication port 121S, and the third communication port 121S are connected. E forms a first flow channel. The valve cavity, the first connecting port 121D, and the fourth connecting port 121C 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 connecting port 121C, the valve core cavity, the second connecting port 121S, and the fourth connecting port 121C form the first flow channel. The valve cavity, the first connecting port 121D, and the third connecting port 121E 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, and 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.

[0043] However, during the rotation of the valve core 200, the third flow port 121E or the fourth flow port 121C will partially connect with the valve cavity 101. Before the switching process is complete, the third flow port 121E or the fourth flow port 121C is the low-pressure section, and the valve cavity 101 is the high-pressure section. (Refer to...) Figure 3 As shown, the support point formed by the edge of the sealing assembly 300 and the third flow port 121E or the fourth flow port 121C forms a fulcrum shaft 01. The sealing assembly 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 is greater than the pressure that the sealing section only receives from the high pressure chamber. The sealing assemblies 300 on both sides of the fulcrum shaft 01 are subjected to different forces. 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 assembly 300. The sealing assembly 300 will generate a force to flip towards the third flow port 121E or the fourth flow port 121C, and flip towards the inside of the third flow port 121E or the fourth flow port 121C.

[0044] By applying the technical solution of this application, during the rotation of the valve core 200 and its passage through the flow port 121, the suspended section formed by the sealing assembly 300 can have its center of mass and the sealing section located on the same side of the fulcrum axis 01 when forming a fulcrum axis 01 with the flow port 121. Thus, the theoretical resultant force point of the suspended section will be on the same side as the sealing section. After the sealing assembly 300 is subjected to force, the force on the side of the sealing assembly 300 near the center of the connecting port 210 on the fulcrum axis 01 will be much greater than the force on the side away from the center of the connecting port 210, meaning that no torque will be generated that causes it to flip into the flow port 121, preventing the sealing assembly 300 from flipping. Compared to traditional technical solutions, the technical solution in this application essentially involves moving the fulcrum axis 01 outward, causing the force on the suspended section to be combined to one side of the sealing section, preventing the generation of a flipping torque, thereby preventing the sealing assembly 300 from flipping, preventing the sealing assembly 300 from getting stuck in the flow port 121 and breaking, reducing the maintenance cost of the multi-way valve, and improving the stability of the multi-way valve.

[0045] In some embodiments of this application, the sealing component 300 can be configured as an irregular structure other than a ring. That is, compared with the form of the ring seal in the conventional solution, the outer periphery of the sealing component 300 is an irregular shape, and the fulcrum axis 01 is moved outward through the irregular outer periphery.

[0046] like Figure 6 As shown, in the first embodiment provided in this application, the two sides of the sealing component 300 that are arranged opposite each other along the rotation direction are straight sides. Thus, when the sealing component rotates through the flow port 121, the straight side will form the fulcrum shaft 01. At this time, the suspended section is completely located on the side of the fulcrum shaft 01 close to the communication port 210 to prevent the sealing component 300 from flipping.

[0047] like Figure 7 As shown, in the second embodiment provided in this application, the two sides of the sealing component 300 arranged opposite each other along the rotation direction are arc-shaped, and the center of the arc is located on one side of the connecting port 210. This arrangement can make the center of mass of the suspended section located on the side of the fulcrum axis 01 close to the connecting port 210, preventing the sealing component 300 from flipping. Compared with the first embodiment, setting the sides of the sealing component 300 to be arc-shaped can also reduce the resistance that the sealing component 300 needs to overcome when rotating.

[0048] like Figure 8As shown, in the third embodiment provided in this application, the two sides of the sealing component 300 arranged opposite each other along the rotation direction are arc-shaped, and the center of the arc is located on the side away from the communication port 210. With this arrangement, a protrusion with a circular notch will be formed on the outer periphery of the sealing component 300. The protrusion can make the center of mass of the suspended section located on the side of the fulcrum axis 01 close to the communication port 210, preventing the sealing component 300 from flipping. Compared with the first embodiment and the second embodiment, this arrangement can reduce the area of ​​the sealing component 300 and reduce the friction force that the sealing component 300 needs to overcome when rotating.

[0049] In some other embodiments of this application, such as the fourth embodiment of this application, please refer to... Figure 9 As shown, in the fourth embodiment of this application, the sealing component 300 has a wide circular ring structure, which facilitates the processing and forming of the sealing component 300. Compared with the narrow circular ring seal in the traditional technical solution, setting the sealing component 300 as a wide circular ring structure can increase the area of ​​the sealing component 300. Thus, when the sealing component 300 has a suspended section, the projected area of ​​the suspended section on the flow port 121 is larger, and the center of mass can be located on the side of the fulcrum axis 01 close to the communication port 210, so as to ensure the stability of the sealing component 300.

[0050] In some embodiments of this application, the sealing assembly 300 includes an annular portion 301 and a support portion 302. The support portion 302 is located on the outer periphery of the annular portion 301. During the rotation of the valve core 200 relative to the flow port 121, the axial projection of the support portion 302 and the periphery of the flow port 121 coincides, and the end of the support portion 302 away from the communication port 210 is always in contact with the end cap 120. In this way, the support portion 302 and the flow port 121 can form a fulcrum shaft 01, so that the fulcrum of the fulcrum shaft 01 can be moved from the annular portion 301 to the support portion 302, thereby supporting the sealing assembly 300.

[0051] like Figure 10 As shown, in the fifth embodiment provided in this application, a rectangular support portion 302 is provided on the outer periphery of the annular portion 301. In other embodiments of this application, the support portion 302 can also be set to other shapes, as long as it can expand the fulcrum axis 01.

[0052] Furthermore, the axial projection of the sealing assembly 300 is an axisymmetric figure. With this configuration, the sealing assembly 300 switches between the two flow ports 121. When rotating from one flow port 121 to the other, fulcrum shafts 01 are formed on both sides of the sealing assembly 300, ensuring that the sealing assembly 300 remains stable throughout the entire process of flow path switching as it rotates with the valve core 200.

[0053] Reference Figure 2 and Figure 11As shown, the sealing assembly 300 includes a reinforcing member 320 and a sealing member 310, which are fixedly connected. The stiffness of the reinforcing member 320 is greater than that of the sealing member 310. This arrangement allows the reinforcing member 320 to strengthen the structural strength of the sealing member 310. By placing the reinforcing member 320 externally on the annular sealing member 310, the sealing member 310 is prevented from flipping into the flow port 121 and breaking when rotating with the valve core 200, thus ensuring the overall structural strength of the sealing assembly 300.

[0054] Specifically, the reinforcing member 320 has a receiving groove 321, as shown in the reference. Figure 12 As shown, taking the first embodiment of this application as an example, the receiving groove 321 is located on the side of the reinforcing member 320 near the end cap 120, and the sealing member 310 is disposed in the receiving groove 321. This arrangement allows the sealing member 310 and the reinforcing member 320 to form a fitting structure, so that the reinforcing member 320 and the sealing member 310 are fixedly connected, thereby improving the overall strength of the reinforcing member 320 and the sealing member 310.

[0055] Furthermore, 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 320. This arrangement can seal the gap between the reinforcing member 320 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 320 and the valve core 200, thus ensuring the sealing performance of the multi-way valve.

[0056] Specifically, the inner wall of the reinforcing member 320 is provided with a mounting groove 322 for accommodating the sealing ring 330. It is understood that in this application, the mounting groove 322 may also be provided on the outer wall of the valve core 200, or a groove-shaped structure may be provided on both the inner wall of the reinforcing member 320 and the outer wall of the valve core 200.

[0057] Because the sealing assembly 300 may rotate around its own axis during rotation due to friction and fluid pressure, it will affect the position of the fulcrum shaft 01 formed between the sealing assembly 300 and the flow port 121. Therefore, the sealing assembly 300 and the valve body 100 or the sealing assembly 300 and the valve core 200 provided in this application are provided with an anti-rotation structure to limit the rotation of the sealing assembly 300 around the communication port 210, prevent the sealing assembly 300 from rotating around the communication port 210 and causing the fulcrum shaft 01 to shift, and ensure the stability of the sealing assembly 300.

[0058] In this application, a rotating shaft 220 is provided between the valve core 200 and the end cover 120, and the valve core 200 can rotate around the rotating shaft 220 to provide a rotation center for the valve core 200.

[0059] Reference Figure 13As shown, in some embodiments of this application, the rotating shaft 220 is disposed on the valve core 200, the end cover 120 has a mounting hole, the rotating shaft 220 is rotatably disposed in the mounting hole and coaxially disposed with the mounting hole, and the sealing assembly 300 has an anti-rotation groove 303, the rotating shaft 220 is located in the anti-rotation groove 303, and the anti-rotation groove 303 forms an anti-rotation structure. With this configuration, the rotation of the sealing assembly 300 can be restricted by the anti-rotation groove 303 cooperating with the rotating shaft 220 located outside the rotation axis of the sealing assembly 300, ensuring the stability of the sealing assembly 300 support. Specifically, a notch structure or a protrusion structure can be provided on the sealing assembly 300 to form the anti-rotation groove 303. In other embodiments of this application, the rotating shaft 220 can also be disposed on the end cover 120, and the valve core 200 is provided with a mounting hole.

[0060] Furthermore, the anti-rotation groove 303 is clearance-fitted with the rotating shaft 220, that is, there is a gap between the inside of the anti-rotation groove 303 and the rotating shaft 220. In this way, the anti-rotation groove 303 can limit the rotation of the rotating shaft 220, while the sealing assembly 300 will not rub against the rotating shaft 220, thus ensuring the rotation effect of the valve core 200.

[0061] In other embodiments of this application, reference is made to Figures 14 to 17 As shown, a snap-fit ​​protrusion 02 and a snap-fit ​​groove 03 are provided between the seal 310 and the valve core 200. The snap-fit ​​protrusion 02 and the snap-fit ​​groove 03 engage to form an anti-rotation structure. This design allows the snap-fit ​​protrusion 02 to work with the snap-fit ​​groove 03 to restrict the rotation of the sealing assembly 300. Through the limiting engagement between the valve core 200 and the sealing assembly 300, the stability of the sealing assembly 300 is ensured.

[0062] It is understandable that the snap-fit ​​protrusion 02 can be provided on the valve core 200 or on the sealing assembly 300. Similarly, the snap-fit ​​groove 03 can be provided on the sealing assembly 300 or on the valve core 200.

[0063] Specifically, multiple snap-fit ​​protrusions 02 and snap-fit ​​grooves 03 can be provided, with multiple snap-fit ​​protrusions 02 and multiple snap-fit ​​grooves 03 corresponding one-to-one to improve the anti-rotation effect of the anti-rotation structure. Compared with the technical solution of using the anti-rotation groove 303 in conjunction with the rotating shaft 220 to prevent rotation, using snap-fit ​​protrusions 02 and snap-fit ​​grooves 03 can eliminate the need for the solid part that needs to form the anti-rotation groove 303, which can reduce the area of ​​the sealing assembly 300, thereby reducing the friction force that the valve core 200 needs to overcome when rotating, increasing the rotation speed of the valve core 200, and realizing the rapid switching of the multi-way valve.

[0064] In this application, the sealing assembly 300 also includes an elastic element 340, which is disposed on the side of the seal 310 opposite to the flow port 121, and is used to provide an elastic force to the annular seal 310 toward the flow port 121. The elastic element 340 includes a mounting base and a plurality of springs. The mounting base is used to mount the springs, and the springs abut against the reinforcement 320. With this configuration, the elastic force provided by the elastic element 340 to the seal 310 can ensure a good seal between the seal 310 and the end cap 120. At the same time, when the annular seal 310 wears, the elastic element 340 can compensate for the wear of the annular seal 310, so that the annular seal 310 can always maintain contact with the end cap 120, reducing the risk of internal leakage in the multi-way valve.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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 by comprising: The multi-way valve comprises: a valve body (100) comprising a body (110) and an end cover (120), the body (110) and the end cover (120) cooperating to form a valve cavity (101), and a plurality of flow ports (121) being arranged on the end cover (120); a valve core (200) having a communication port (210) at one end thereof, the valve core (200) being rotatably arranged in the valve cavity (101) so that the communication port (210) can selectively communicate with the flow ports (121); a sealing assembly (300) being sleeved on one end of the valve core (200) having the communication port (210), the sealing assembly (300) having oppositely arranged overhang sections and sealing sections during rotation of the valve core (200) and passing through the flow ports (121), the sealing sections abutting against the end cover (120), the overhang sections coinciding with the axial projection of the flow ports (121), and the overhang sections abutting against the periphery of the flow ports (121) on the side away from the central axis of the communication port (210) to form fulcrums, adjacent two fulcrums being connected to form a fulcrum shaft (01), and the center of mass of the overhang sections being located on the side of the fulcrum shaft (01) close to the central axis of the communication port (210).

2. The multi-way valve according to claim 1, characterized by The sealing assembly (300) comprises a circular ring portion (301) and a support portion (302) arranged in a ring shape, the support portion (302) being located on the outer periphery of the circular ring portion (301), and the support portion (302) coinciding with the axial projection of the flow ports (121) during rotation of the valve core (200) relative to the flow ports (121), and the end of the support portion (302) away from the communication port (210) always abutting against the end cover (120).

3. The multiple port valve of claim 2, wherein, The axial projection of the sealing assembly (300) is an axisymmetric figure.

4. The multi-way valve according to claim 1, wherein The sealing assembly (300) comprises a reinforcing member (320) and a sealing member (310), the reinforcing member (320) and the sealing member (310) being fixedly connected, and the rigidity of the reinforcing member (320) being greater than that of the sealing member (310).

5. The multiple port valve of claim 4, wherein, The reinforcing member (320) has a receiving groove (321) located on the side of the reinforcing member (320) close to the end cover (120), and the sealing member (310) is arranged in the receiving groove (321).

6. The multiple port valve of claim 4, wherein, The sealing assembly (300) further has a sealing ring (330) arranged between the outer wall of the valve core (200) and the inner wall of the reinforcing member (320).

7. The multi-way valve according to claim 1, wherein The sealing assembly (300) is provided with a rotation-stopping structure between the sealing assembly (300) and the valve body (100) and / or the valve core (200) to limit rotation of the sealing assembly (300) around the communication port (210).

8. The multiple-way valve according to claim 7, characterized in that The valve core (200) and the end cover (120) have a rotation shaft (220), the valve core (200) can rotate around the rotation shaft (220), the sealing assembly (300) has a rotation stopping groove (303), the rotation shaft (220) is located in the rotation stopping groove (303), and the rotation stopping groove (303) forms the rotation stopping structure.

9. The multiple way valve of claim 8, wherein, The rotation stopping groove (303) and the rotation shaft (220) are in clearance fit.

10. The multi-way valve according to claim 7, wherein The sealing assembly (300) and the valve core (200) are provided with a clamping protrusion (02) and a clamping groove (03), the clamping protrusion (02) and the clamping groove (03) are clamped and matched to form the rotation stopping structure.

11. The multiple-way valve according to claim 1, characterized in that The body (110) is provided with a first communication port (121D) and a second communication port (121S), a plurality of flow-through ports (121) include a third communication port (121E) and a fourth communication port (121C), the valve core (200) has a valve core cavity, one end of the valve core cavity is communicated with the second communication port (121S), the other end of the valve core cavity is communicated with the third communication port (121E) or the fourth communication port (121C), in the case that the valve core cavity is communicated with the third communication port (121E), the valve core cavity, the second communication port (121S) and the third communication port (121E) form a first flow channel, the valve cavity, the first communication port (121D) and the fourth communication port (121C) are communicated and form a second flow channel spaced from the first flow channel; in the case that the valve core cavity is communicated with the fourth communication port (121C), the valve core cavity, the second communication port (121S) and the fourth communication port (121C) form a first flow channel, the valve cavity, the first communication port (121D) and the third communication port (121E) are communicated and form a second flow channel spaced from the first flow channel, the first flow channel is used for flowing low-pressure fluid, and the second flow channel is used for flowing high-pressure fluid.

Images