Multi-way valve

Abstract

The multi-way valve comprises a valve body, a valve cavity is formed in the valve body, a plurality of main flow channels which are not communicated with one another are arranged on the valve body at intervals, and each main flow channel is provided with a main inner connector formed in the inner wall of the cavity in the circumferential direction of the valve body; the first valve element rotates in the valve cavity around the axis of the valve body, a plurality of first flow channels which are not communicated with one another are formed in the first valve element, and each first flow channel is communicated with at least two main inner connectors; the auxiliary flow channels are arranged on the valve body and do not communicate with one another, and each auxiliary flow channel is provided with an auxiliary outer connector and an auxiliary inner connector through which water flows; the second valve element rotates in the valve cavity around the axis of the valve body, a plurality of second flow channels which are not communicated with one another are formed in the second valve element, and each second flow channel is communicated with at least two auxiliary inner connectors; the valve further comprises a first driving piece and a second driving piece, and the first driving piece and the second driving piece are in transmission connection with the first valve element and the second valve element respectively. The multi-way valve is high in integration, independent in valve element control and easy and convenient to operate.

Description

Technical Field

[0001] The present application relates to the technical field of valves, and in particular to a multi-way valve. Background Art

[0002] Valves play the role of on-off, reversing and flow regulation in the process of fluid circulation, and are key components in the piping system.

[0003] Prior art requires the coordinated use of multiple valves to control the opening and closing, direction switching, and flow rate regulation of multiple flow channels. This results in complex systems, large footprints, and difficulties in cost control. For example, in automotive thermal management systems, the numerous pipelines require the opening and closing, direction switching, and flow rate regulation of fluids between them. Miniaturization and integration of valves are effective means of influencing system stability and cost control. Summary of the Invention

[0004] The present application provides a multi-way valve to solve the problems in the related prior art such as the complicated valve structure, the large volume occupied by the valve system and the difficulty in cost control.

[0005] A multi-way valve comprising:

[0006] A valve body, wherein the valve body has a valve cavity inside, and the valve cavity has a cavity inner wall in the circumferential direction and a bottom plate at one end of the valve cavity;

[0007] a plurality of main flow channels provided in the inner wall of the cavity, the plurality of main flow channels being spaced apart from each other, each of the main flow channels having a main outer interface and a main inner interface, the main inner interface being provided on the inner surface of the inner wall of the cavity along the circumference of the valve cavity, the main flow channel being in communication with the valve cavity via the main inner interface;

[0008] a first valve core rotatably disposed in the valve cavity, the first valve core having a plurality of first flow channels spaced apart from each other, each of the first flow channels being in communication with at least two of the main inner ports;

[0009] a plurality of secondary flow channels provided in the bottom plate, the plurality of secondary flow channels being spaced apart from each other and penetrating the bottom plate along the axial direction of the valve cavity, and the secondary inner port being opened on the bottom plate along the circumference of the valve body;

[0010] a second valve core coaxially disposed with the first valve core, the second valve core being rotatably disposed in the valve cavity, the second valve core having a plurality of second flow channels spaced apart from each other, each second flow channel being in communication with at least two of the auxiliary flow channels; and

[0011] A first driving member and a second driving member are respectively connected to the first valve core and the second valve core in a transmission manner.

[0012] To implement the above technical solution, each main flow channel can be connected to at least one independent pipeline or fluid path through the main external interface. Through the two main internal interfaces and any one of the first flow channels, flow between two different main flow channels can be achieved. Rotating the first valve core can rotate the first flow channel, thereby achieving communication between the first flow channel and different main internal interfaces, thereby achieving a pairing method for connecting multiple main flow channels. The circumferential inner wall of the valve cavity is fully utilized to arrange multiple internal interfaces for water flow, resulting in a simple and reliable structure. Each secondary flow channel can be connected to a pipeline or fluid path through the secondary external interface, and communication between different secondary flow channels can be achieved through the second flow channel, thereby achieving a pairing method for connecting multiple secondary flow channels. Furthermore, the outer side of the valve body is fully utilized to arrange multiple secondary external interfaces.

[0013] By fully utilizing the outer surface of the valve body and rationally designing the first and second valve cores, the system achieves directional connection for a greater number of pipelines within a very compact space, achieving a high degree of integration. The connector and drive shaft independently control the first and second valve cores, allowing them to operate independently of each other during adjustment. This allows for highly flexible adjustment options and simple and convenient operation.

[0014] As one of the optional embodiments of this solution, the first driving member includes a docking joint coaxially arranged on the first valve core, and the second driving member includes a driving shaft, which coaxially passes through the docking joint and the first valve core in sequence until it is transmission-connected with the second valve core.

[0015] To implement the above technical solution, the docking joint and the drive shaft are located on the same side of the valve body, so that the first drive member and the second drive member are assembled on one side, which is more convenient.

[0016] As one of the optional embodiments of this solution, it also includes a sealing component, which is placed between the first valve core and the inner wall of the cavity. The sealing component is provided with a through opening, which connects the first flow channel and the main inner interface.

[0017] As one of the optional embodiments of this solution, the sealing assembly is provided with a notch on the side close to the second valve core, the second valve core is provided with a recessed groove on the end face facing the first valve core, and at least one of the main internal interfaces is connected to the recessed groove through the notch.

[0018] By implementing the above technical solution, the water flow from the main internal interface can partially enter the recessed groove, applying pressure to the second valve core in the direction toward the bottom plate. After the second valve core is connected to the pipeline, the lifting force toward the first valve core is partially offset, reducing the direct pressure between the second valve core and the abutment part, thereby making it easier for the second valve core to rotate.

[0019] As one of the optional embodiments of this solution, the sealing assembly has an inner annular surface facing the outer wall of the first valve core and an outer annular surface facing the inner wall of the cavity. An inner sealing ring is provided on the inner annular surface at the circumference of each opening edge, and an outer sealing ring is provided on the outer annular surface at the circumference of each opening edge.

[0020] As one of the optional embodiments of this solution, the sealing assembly is fixedly placed between the first valve core and the inner wall of the cavity. The sealing assembly is also provided with an abutment portion on the side close to the second valve core. The abutment portion has an abutment surface facing the second valve core, and the abutment surface abuts against the second valve core. The first valve core has an isolation surface facing the second valve core, and the abutment surface is closer to the second valve core in the axial direction of the valve body than the isolation surface.

[0021] To implement the above technical solution, since the secondary internal interface is opened on the bottom plate, when the second valve core is connected to the external pipeline to let water in, the water flow and water pressure will give the second valve core pressure in the direction of the first valve core. The design of this solution makes the end face of the second valve core abut against the abutting surface instead of the isolation surface, so that the axial pressure of this part is borne by the abutting part, and the second valve core and the first valve core do not have direct contact, further making the first valve core and the second valve core completely independent of each other and not affecting each other. There will be no situation where the second valve core is subjected to the squeezing force given to the first valve core by the water pressure along the axial direction of the valve body, thereby causing the torque required for the first valve core to rotate to increase, so that the operation is simpler and more convenient.

[0022] As one of the optional embodiments of this solution, it further includes a valve cover, wherein an opening is provided at one end of the valve cavity away from the bottom plate, the valve cover is fixed on the opening, and an end of the sealing assembly away from the abutting portion is arranged to abut the valve cover.

[0023] By implementing the above technical solution, the pressure of the second valve core applied to the sealing assembly is borne by the valve cover.

[0024] As one of the optional embodiments of this solution, the sealing assembly includes a first sealing sleeve coaxially sleeved on the outer wall of the first valve core and a second sealing sleeve sleeved on the outer wall of the first sealing sleeve, the inner wall of the first sealing sleeve is the inner annular surface, the outer wall of the second sealing sleeve is the outer annular surface, the abutting portion is arranged on the second sealing sleeve, and one end of the second sealing sleeve abuts against the valve cover.

[0025] To implement the above technical solution, a specific structure of a sealing assembly is disclosed, in which the first sealing sleeve and the second sealing sleeve are designed to be separate, which is convenient for processing and assembly.

[0026] As one of the optional embodiments of this solution, the inner annular surface is also coated with a resistance-reducing coating.

[0027] The implementation of the above technical solution greatly reduces the friction resistance between the outer wall of the first valve core and the inner ring surface, and a smaller torque can be used when rotating the first valve core, thereby improving the operational convenience and adaptability of the device.

[0028] As one of the optional embodiments of this solution, a support sleeve is fixedly provided on the inner wall of the valve cover facing the valve cavity along the axial direction of the valve body, one end of the support sleeve abuts the abutment portion along the axial direction of the valve body, and a avoidance port is provided on the corresponding opening of the support sleeve.

[0029] To implement the above technical solution, the support sleeve contacts the abutment portion, thereby directly providing supporting force to the abutment portion. The cooperation between the support sleeve and the first sealing sleeve makes the abutment portion more stable and reliable, thereby providing a more stable barrier to the pressure of the first valve core along the axial direction of the valve body, so that the rotation of the second valve core is also more stable.

[0030] One of the above technical solutions has the following advantages or beneficial effects:

[0031] 1. By making full use of the outer surface of the valve body and the rational structural design of the first valve core and the second valve core, it is possible to achieve reversing connection of more pipelines in a very small space, with a high degree of integration. In addition, the butt joint and the drive shaft are on the same side of the valve body, which is more convenient during production and assembly. The butt joint and the drive shaft control the first valve core and the second valve core completely independently, and the first valve core and the second valve core operate independently when adjusted. The adjustment of the first valve core and the second valve core does not affect each other, which provides very free adjustment options and is simple and convenient to operate.

[0032] 2. Since the secondary internal interface is opened on the bottom plate, when the second valve core is connected to the external pipeline to let water in, the water flow and water pressure will give the second valve core pressure in the direction of the first valve core. The design of this solution makes the end face of the second valve core abut against the abutting surface instead of the isolation surface, so that the axial pressure of this part is borne by the abutting part, and the second valve core and the first valve core do not have direct contact, further making the first valve core and the second valve core completely independent of each other and not affecting each other. There will be no situation where the second valve core is subjected to the squeezing force given to the first valve core by the water pressure along the axial direction of the valve body, thereby causing the torque required for the first valve core to rotate to increase, so that the operation is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0034] Figure 1 This is an overall structural diagram of the multi-way valve provided in Example 1 of the present application;

[0035] Figure 2 is an overall cross-sectional view of the multi-way valve provided in Example 1 of the present application;

[0036] Figure 3 is a cross-sectional view of the multi-way valve in an exploded state provided in Example 1 of the present application;

[0037] Figure 4 This is an overall structural diagram of the multi-way valve provided in Example 1 of the present application from another perspective;

[0038] Figure 5 is a cross-sectional view showing a first flow channel of a first valve core provided in Example 1 of the present application;

[0039] Figure 6 is an overall structural diagram of the second valve core provided in Example 1 of the present application;

[0040] Figure 7 This is an overall structural diagram of the second valve core provided in Example 1 of the present application, which is used to show another perspective;

[0041] Figure 8 is a cross-sectional view illustrating the structure of a seal provided in Example 1 of the present application;

[0042] Figure 9 is an exploded view showing the structure of the seal provided in Example 1 of the present application;

[0043] Figure 10 This is provided in Example 1 of the present application Figure 3 A partial enlarged view of part A;

[0044] Figure 11 This is an exploded structural diagram of a sealing assembly provided in Example 1 of the present application;

[0045] Figure 12 This is provided in Example 1 of the present application Figure 2 A partial enlarged view of part B.

[0046] Figure numerals: 1, valve body; 11, valve cavity; 111, cavity inner wall; 12, opening; 13, locking sleeve; 14, bottom plate; 141, cavity bottom wall; 131, locking hole; 2, main flow channel; 21, main external interface; 22, main internal interface; 3, first valve core; 31, first flow channel; 311, flow channel a; 312, flow channel b; 313, flow channel c; 314, flow channel d; 32, first driving member; 321, docking joint; 33, shaft hole; 34, shaft seal sleeve; 35, shaft seal; 36, isolation surface; 37, weight reduction groove; 4, secondary flow channel; 41, secondary external interface; 42, secondary internal interface; 5, second valve core; 51 , second flow channel; 511, m flow channel; 512, n flow channel; 52, recessed groove; 6, second driving member; 61, driving shaft; 7, sealing assembly; 71, first sealing sleeve; 711, notch; 72, second sealing sleeve; 73, through port; 731, first through port; 732, second through port; 74, inner annular surface; 741, inner sealing ring; 75, outer annular surface; 751, outer sealing ring; 8, abutment; 81, abutment surface; 9, valve cover; 91, support sleeve; 911, avoidance port; 10, sealing member; 101, sealing ring; 1011, first through hole; 102, smooth coating; 1021, second through hole. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0048] In the description of this application, it should be noted that, unless otherwise specified or limited, the term "and / or" herein is merely a description of an association relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, and B exists alone. Furthermore, the character " / " herein, unless otherwise specified, generally indicates that the associated objects are in an "or" relationship.

[0049] The following is combined with Figure 1-12 This application is further described.

[0050] Reference Figure 1 The present application discloses a multi-way valve, which includes: a valve body 1, which is cylindrical, and a plurality of locking sleeves 13 are provided at intervals along the circumference of the bottom of the outer wall of the valve body 1. The locking sleeve 13 is provided with locking holes 131 for providing a locking and fixing function when the valve body 1 is assembled and connected with the counterpart.

[0051] Reference Figure 2 and Figure 3 The valve body 1 has a valve cavity 11 therein. The valve cavity 11 is cylindrical, with the axis of the valve cavity 11 parallel to the axis of the valve body 1. The valve body 1 has an opening 12 at the top of the valve cavity 11, and a bottom plate 14 is fixedly mounted at the bottom of the valve body 1. The valve cavity 11 has a circumferential inner wall 111, and the side of the bottom plate 14 close to the valve cavity 11 is a cavity bottom wall 141.

[0052] Reference Figure 3 and Figure 4 The valve body 1 is provided with a main flow channel 2. There are multiple main flow channels 2 that are not interconnected. In this embodiment, eight main flow channels 2 are arranged at intervals along the circumference of the valve body 1. Each main flow channel 2 has a main external port 21 and a main internal port 22 through which water flows. The main external port 21 is used to connect the valve body 1 with an external pipeline or external flow channel. There are eight main external ports 21 corresponding to the main flow channels 2 and are arranged in a circular shape on the bottom end surface of the valve body 1.

[0053] Reference Figure 3 and Figure 4 Eight main internal ports 22 are provided, corresponding to the main flow channels 2, and are disposed along the circumference of the valve body 1 on the inner wall 111 of the cavity. In other alternative embodiments, the main flow channels 2 may have a curved trajectory, such as an S-shape, a Z-shape, or an irregular shape, as long as any two main flow channels 2 are disconnected and can independently pass water. Furthermore, the main external ports 21 may also be disposed on the circumferential sidewall of the valve body 1, and are not limited to being disposed on the bottom end surface of the valve body 1.

[0054] As described above, the valve body 1 makes full use of its own cylindrical side surface and bottom end surface, and sets multiple main external interfaces 21 to be able to connect to multiple pipelines or flow channels at the same time, integrating more pipeline interfaces in a small volume, with a high degree of integration, reducing the occupied volume and system redundancy.

[0055] Reference Figure 2-3 、 Figure 5, further comprising a first valve core 3, which is cylindrical and rotatable about the axis of the valve body 1 and disposed within the valve cavity 11. The first valve core 3 has a plurality of mutually unconnected first flow channels 31, each of which is in communication with at least two main internal interfaces 22. For example, in this embodiment, the first valve core 3 has four first flow channels 31, namely, flow channel a 311, flow channel b 312, flow channel c 313, and flow channel d 314. Each first flow channel 31 can be in communication with two main internal interfaces 22, and the fluid flows from one of the main channels 2 to another through one of the first flow channels 31, thereby corresponding to the design of adapting to eight main channels 2 and realizing the function of flow direction reversal between the multiple main channels 2. It should be understood that the outer peripheral wall of the first valve core 3 must be sealed against the inner wall 111 of the cavity to ensure that when the first flow channel 31 is connected to at least two main internal ports 22, water flows only through the main internal ports 22 and the first flow channel 31 and does not flow into other main internal ports 22 not connected to the first flow channel 31. The sealing solution will be described later.

[0056] Reference Figure 2 and Figure 5 After the valve body 1 is assembled with the counterpart, the main external interface 21 is connected to the external pipeline respectively, and the b flow channel 312 is in contact with the two main internal interfaces 22 at the same time. Since the outer peripheral wall of the first valve core 3 is sealed with the inner wall 111 of the cavity, the water flows through the first flow channel 31 and the two main internal interfaces 22 to realize the connection of the water flow from one main internal interface 22 to the other main internal interface 22. When the first valve core 3 is rotated, the first flow channel 31 is driven to rotate to realize different pairing schemes of different main channels 2, thereby realizing the switching process between the main channels 2. By utilizing the cylindrical surface of the valve body 1 and the cylindrical first valve core 3, through the full use of the outer surface of the valve body 1 and the reasonable structural design of the first valve core 3, the switching connection of more pipelines can be realized in a very small space, and the degree of integration is high. In order to reduce the weight of the structure, a number of weight-reducing grooves 37 are also provided on the first valve core 3.

[0057] Reference Figure 3 and Figure 4 , and also includes a secondary flow channel 4, which is arranged on the bottom plate 14. There are multiple secondary flow channels 4 and they are not connected to each other. Each secondary flow channel 4 has a secondary external interface 41 and a secondary internal interface 42 for water to flow through. In this embodiment, the secondary flow channel 4 is a flow channel formed by passing through the bottom plate 14. There are nine secondary flow channels 4, namely eight arranged at intervals along the circumference of the valve body 1 and the ninth located at the center of the bottom plate 14. The interface of each secondary flow channel 4 located outside the valve cavity 11 is the secondary external interface 41, and the interface of the secondary flow channel 4 located inside the valve cavity 11 is the secondary internal interface 42. When the valve body 1 is assembled and connected to the counterpart, the secondary external interface 41 is connected to the external pipeline or flow channel.

[0058] Reference Figure 2-3 、 Figure 6-7 , further comprising a second valve core 5, which is rotatably disposed about the axis of the valve body 1 within the valve cavity 11. The first valve core 3 and the second valve core 5 are coaxially disposed within the valve cavity 11 along the axial direction of the valve body 1. The first valve core 3 is disposed within the valve cavity 11 near the opening 12, and the second valve core 5 is located at the bottom end of the first valve core 3. The second valve core 5 has a plurality of interconnected second flow channels 51, each of which is in communication with at least two secondary internal ports 42. The second flow channels 51 are disposed on a surface of the second valve core 5 facing away from the first valve core 3. In this embodiment, the second flow channels 51 include an m flow channel 511 and an n flow channel 512.

[0059] Reference Figure 8 and Figure 9 A sealing member 10 is disposed on the cavity bottom wall 141. The sealing member 10 comprises a sealing ring 101 embedded in the cavity bottom wall 141 and a lubricious coating 102 covering the top surface of the sealing ring 101. A first through-hole 1011 is defined on the sealing ring 101, corresponding to the secondary flow channel 4. A second through-hole 1021 is defined on the lubricious coating 102, corresponding to the secondary flow channel 4. These first and second through-holes 1011 and 1021 allow for the passage of water. The lubricious coating 102 primarily reduces the resistance to rotation of the second valve core 5, thereby reducing the rotational torque of the second valve core 5.

[0060] Reference Figure 3 , also includes a first drive member 32 and a second drive member 6, which are respectively connected to the first valve core 3 and the second valve core 5 in a transmission manner. The first drive member 31 includes a hexagonal docking joint 321 integrally arranged on the top of the first valve core 3. The second drive member 6 includes a drive shaft 61, and an axial hole 33 is provided on the first valve core 3 and the docking joint 321 along its own axis for the drive shaft 61 to pass through. The drive shaft 61 is connected to the second valve core 5 at one end close to the second valve core 5. In this embodiment, the end of the drive shaft 61 is key-connected to the second valve core 5. In other optional embodiments, it can also be fixedly connected by welding, pinning, etc. to realize the function of rotating the drive shaft 61 to drive the second valve core 5 to rotate. This setting makes the docking joint 321 and the drive shaft 61 on the same side of the valve body 1, which is more convenient during production and assembly. In addition, the docking joint 321 and the drive shaft 61 completely independently control the first valve core 3 and the second valve core 5 respectively. When the first valve core 3 and the second valve core 5 are adjusted, they operate independently of each other. The adjustment of the first valve core 3 and the second valve core 5 does not affect each other, with very free adjustment options and simple and convenient operation.

[0061] Reference Figure 3 and Figure 10The outer wall of the drive shaft 61 is sealed from the shaft hole 33. Specifically, a shaft seal sleeve 34 is provided on the end face of the first valve core 3, and a shaft seal 35 is provided on the inner wall of the shaft seal sleeve 34 to achieve a seal between the shaft seal sleeve 34 and the circumferential wall of the drive shaft 61. The purpose of the shaft seal sleeve 34 is to seal and isolate the first valve core 3 from the second valve core 5, thereby preventing water from leaking from the shaft hole 33.

[0062] Reference Figure 2-3 , Figure 11-12 , also includes a sealing assembly 7 and a valve cover 9. The valve cover 9 is fixed on the opening 12. A support sleeve 91 is integrally provided at the bottom of the valve cover 9. The sealing assembly 7 includes a first sealing sleeve 71 and a second sealing sleeve 72. The first sealing sleeve 71 is located inside the support sleeve 91, and the second sealing sleeve 72 is sleeved on the outer side of the support sleeve 91. The first sealing sleeve 71 and the second sealing sleeve 72 are designed separately to facilitate processing and assembly. Among them, the inner wall of the circumference of the first sealing sleeve 71 is an inner annular surface 74, which contacts the outer wall of the circumference of the first valve core 3. A plurality of first openings 731 are opened on the inner annular surface 74 along its own circumference corresponding to the first flow channel 31. An inner sealing ring 741 is provided on the inner annular surface 74 at the edge of each first opening 731. When the first valve core 3 is rotated, the inner annular surface 74 is driven to rotate, so that the inner sealing ring 741 forms a seal on both ends of the first flow channel 31, ensuring that water flows along different first flow channels 31. The outer peripheral side wall of the second sealing sleeve 72 is an outer ring surface 75, which is in direct contact with the inner wall of the valve body 1. A plurality of second openings 732 are provided on the outer ring surface 75 corresponding to the main inner interface 22, and an outer sealing ring 751 is provided on the outer ring surface 75 along the edge of each opening 73. The outer sealing ring 751 forms a seal for each main inner interface 22 to ensure that the water flows along different first flow channels 31. A bypass port 911 is provided on the support sleeve 91 for fluid to pass through. The first opening 731, the second opening 732 and the bypass port 911 constitute the opening 73 for water to pass through. In order to reduce the friction between the inner ring surface 74 and the outer peripheral side wall of the first valve core 3, the inner ring surface 74 is covered with a resistance-reducing coating. In this embodiment, a wear-resistant and low-friction polytetrafluoroethylene coating is selected.

[0063] Reference Figure 2 、 Figure 3 and Figure 12The bottom of the second sealing sleeve 72 is integrally provided with an abutment portion 8, and the top end of the second sealing sleeve 72 abuts the bottom surface of the valve cover 9. The abutment portion 8 has an abutment surface 81 facing the second valve core 5, which abuts the second valve core 5. The first valve core 3 has an isolation surface 36 facing the second valve core 5, and the abutment surface 81 is closer to the second valve core 5 than the isolation surface 36 in the axial direction of the valve body 1. Because the secondary internal port 42 is provided on the bottom plate 14, when the second valve core 5 is connected to the external pipeline for water inlet, the water flow and water pressure will exert a lifting pressure on the second valve core 5 toward the first valve core 3. The design of this solution ensures that the top surface of the second valve core 5 abuts the abutment surface 81, rather than the isolation surface 36. This means that the axial lifting pressure is borne by the abutment portion 8 and transmitted to the valve cover 9. The valve cover 9 is fixed to the opening 12, further ensuring the independence of the first valve core 3 and the second valve core 5. Avoid the situation where the second valve core 5 is subjected to the squeezing force exerted by the water pressure on the first valve core 3 along the axial direction of the valve body 1, thereby causing the torque required for the first valve core 3 to rotate to increase. In order to reduce friction, a coating that can reduce friction, such as a polytetrafluoroethylene coating, can be applied to the top surface of the first valve core 3 or the bottom surface of the valve cover 9. A material that can reduce friction and is wear-resistant, such as a polytetrafluoroethylene coating, can be coated on the abutment surface 81. The above setting further prevents the second valve core 5 from making direct contact with the first valve core 3, and further makes the first valve core 3 and the second valve core 5 completely independent of each other and not affecting each other, so as to make operation simpler and more convenient. In other optional embodiments, the abutment portion 8 can also exist separately, that is, the abutment portion 8 can be made into a split type with the second sealing sleeve 72, the top of the abutment portion 8 abuts against the second sealing sleeve 72, and the bottom surface of the abutment portion 8 abuts against the top surface of the second valve core 5, so that the lifting force of the second valve core 5 is transmitted to the second sealing sleeve 72.

[0064] Reference Figure 12 The bottom end of the support sleeve 91 is in contact with the side of the abutment portion 8 facing away from the abutment surface 81, so that the support sleeve 91 can also directly provide supporting force to the abutment portion 8. The cooperation between the support sleeve 91 and the first sealing sleeve 71 makes the abutment portion 8 more stable and reliable, thereby providing a more stable barrier to the axial pressure of the first valve core 3 along the valve body 1, so that the rotation of the second valve core 5 is also more stable.

[0065] Reference Figure 11 and Figure 12The first sealing sleeve 71 is provided with a notch 711 along its axis, and the end surface of the second valve core 5 facing the first valve core 3 is provided with a recessed groove 52. The notch 711 allows the recessed groove 52 to communicate with at least one main internal port 22. When water flows from the first flow channel 31 through the main internal port 22, some of the water flows into the recessed groove 52. The water flow in the recessed groove 52 exerts pressure on the second valve core 5 to move away from the first valve core 3. This pressure partially offsets the upward lifting pressure exerted on the second valve core 5 after it is connected to the pipeline, thereby reducing the direct contact pressure between the second valve core 5 and the abutment portion 8, making it easier for the second valve core 5 to rotate.

[0066] As described above, the second valve core 5 and the first valve core 3 do not require a very large torque when being turned, which reduces energy consumption if the machine is automatically turned, and reduces manpower consumption if turned manually.

[0067] The above description is only a partial implementation of the embodiments of the present application and does not constitute any form of limitation to the application. The protection scope of the embodiments of the present application is not limited thereto. Any simple modifications, equivalent changes and modifications that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the embodiments of the present application should be covered within the protection scope of the embodiments of the present application.

Claims

1. A multi-way valve, characterized in that: include: A valve body (1), wherein the valve body (1) has a valve cavity (11) inside, and the valve cavity (11) has a cavity inner wall (111) in the circumferential direction and a bottom plate (14) at one end of the valve cavity (11); A plurality of main flow channels (2) are provided in the inner wall (111) of the cavity, the plurality of main flow channels (2) are spaced apart from each other, each of the main flow channels (2) has a main outer interface (21) and a main inner interface (22), the main inner interface (22) is provided on the inner surface of the inner wall (111) of the cavity along the circumference of the valve cavity (11), and the main flow channel (2) is connected to the valve cavity (11) via the main inner interface (22); A first valve core (3), the first valve core (3) is rotatably disposed in the valve cavity (11), and the first valve core (3) has a plurality of first flow channels arranged at intervals. ( 31), each of the first flow channels (31) is in communication with at least two of the main internal interfaces (22); a plurality of secondary flow channels (4) provided in the bottom plate (14), the plurality of secondary flow channels (4) being spaced apart from each other and penetrating the bottom plate (14) along the axial direction of the valve cavity (11), and the secondary internal interface (42) being opened on the bottom plate (14) along the circumference of the valve body (1); a second valve core (5) coaxially arranged with the first valve core (3), the second valve core (5) being rotatably arranged in the valve cavity (11), the second valve core (5) having a plurality of second flow channels (51) spaced apart, each second flow channel (51) being in communication with at least two of the secondary flow channels (4); and A first driving member (32) and a second driving member (6), wherein the first driving member (32) and the second driving member (6) are respectively connected in transmission with the first valve core (3) and the second valve core (5).

2. The multi-way valve according to claim 1, wherein: The first driving member (32) includes a docking joint (321) coaxially arranged on the first valve core (3), and the second driving member (6) includes a driving shaft (61), and the driving shaft (61) coaxially passes through the docking joint (321) and the first valve core (3) in sequence until it is in transmission connection with the second valve core (5).

3. The multi-way valve according to claim 1 or 2, characterized in that: The invention also includes a sealing component (7), which is placed between the first valve core (3) and the inner wall (111) of the cavity. The sealing component (7) is provided with a through opening (73), and the through opening (73) communicates with the first flow channel (31) and the main inner interface (22).

4. The multi-way valve according to claim 3, wherein: The sealing component (7) is provided with a notch (711) on a side close to the second valve core (5), and the end surface of the second valve core (5) facing the first valve core (3) is provided with a recessed groove (52), and at least one of the main internal interfaces (22) is connected to the recessed groove (52) through the notch (711).

5. The multi-way valve according to claim 3, wherein: The sealing assembly (7) has an inner annular surface (74) facing the outer wall of the first valve core (3) and an outer annular surface (75) facing the inner wall (111) of the cavity, an inner sealing ring (741) is provided on the inner annular surface (74) at the circumferential side of each opening (73), and an outer sealing ring (751) is provided on the outer annular surface (75) at the circumferential side of each opening (73).

6. The multi-way valve according to claim 5, wherein: The sealing assembly (7) is fixedly placed between the first valve core (3) and the inner wall (111) of the cavity. The sealing assembly (7) is further provided with an abutting portion (8) on the side close to the second valve core (5). The abutting portion (8) has an abutting surface (81) facing the second valve core (5). The abutting surface (81) abuts against the second valve core (5). The first valve core (3) has an isolation surface (36) facing the second valve core (5). The abutting surface (81) is closer to the second valve core (5) than the isolation surface (36) in the axial direction of the valve body (1).

7. The multi-way valve according to claim 6, wherein: It also includes a valve cover (9), an opening (12) is provided at one end of the valve cavity (11) away from the bottom plate (14), the valve cover (9) is fixed on the opening (12), and the end of the sealing assembly (7) away from the abutting portion (8) is arranged to abut the valve cover (9).

8. The multi-way valve according to claim 7, wherein: The sealing assembly (7) comprises a first sealing sleeve (71) coaxially sleeved on the outer wall of the circumference of the first valve core (3) and a second sealing sleeve (72) sleeved on the outer wall of the circumference of the first sealing sleeve (71), the inner wall of the circumference of the first sealing sleeve (71) being the inner annular surface (74), the outer wall of the circumferential side of the second sealing sleeve (72) being the outer annular surface (75), the abutting portion (8) being arranged on the second sealing sleeve (72), and one end of the second sealing sleeve (72) being in abutment with the valve cover (9).

9. The multi-way valve according to claim 7, wherein: The inner annular surface (74) is also provided with a coating, which is made of a low-friction and wear-resistant material.

10. The multi-way valve according to claim 7, wherein: A support sleeve (91) is fixedly provided on the inner wall of the valve cover (9) facing the valve cavity (11) along the axial direction of the valve body (1); one end of the support sleeve (91) abuts against the abutment portion (8) along the axial direction of the valve body (1); and a relief opening (911) is provided on the support sleeve (91) corresponding to the through opening (73).

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