Multi-way valve capable of being proportionally adjusted

Abstract

The utility model discloses a proportional-adjustable multi-way valve, and relates to the technical field of multi-way valves. Comprising a valve body, the two ends of the valve body are closed, a valve cavity is formed in the middle of the valve body, a plurality of valve ports are distributed in the circumference of the bottom of the valve body, and the valve ports communicate with the valve cavity; the valve element can rotate around the axis of the valve element, the valve element is arranged in the valve cavity in a matched mode, the valve element is provided with a plurality of flow channels, and flow channel openings of the flow channels are all formed in the bottom of the valve element; the sealing gasket is located between the bottom of the valve cavity and the bottom of the valve element, the sealing gasket can seal a gap between the valve element and the valve body, the sealing gasket is provided with a plurality of flow guide ports, and the flow guide ports correspond to the valve ports one to one; and after the valve element rotates by a preset angle, the flow channels in the valve element can communicate with the corresponding valve ports according to the corresponding flow path communication modes. The utility model meets the use requirements of the new energy automobile thermal management system.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-way valves, in particular to a proportionally adjustable multi-way valve. Background Art

[0002] Traditional automotive thermal management systems often use three-way valves and four-way valves, and their sealing principle is: accurately control the matching size of the valve core and the valve housing, and rely on the small matching gap between the valve core and the valve housing to reduce the leakage of non-connected pipelines. There are problems such as large torque of the valve core rotation and excessive wear of the valve core. In order to solve the "heat-temperature" control between batteries, motors, electronic controls, and cockpits of different new energy vehicles. The control valve is an important functional component of the "heat-temperature" control system. It is used to realize the opening / closing of various passages of the "heat-temperature" control system, which directly determines whether the various functions of the "heat-temperature" control system can be realized.

[0003] Since the piping system of new energy vehicles is more complex than that of traditional vehicles, the use of traditional three-way valves and four-way valves requires a larger installation space, which also leads to an increase in the cost of the thermal management system. Therefore, in order to adapt to the increasingly complex control functions of the "heat-temperature" control system, various types of multi-way valves have been developed in recent years. However, the existing multi-way valves are limited by the traditional structural form and can usually only switch the flow path on and off. There are few flow path connection modes that can be achieved, which makes it difficult to meet the use requirements of the thermal management system of new energy vehicles. Utility Model Content

[0004] In view of the technical problem that the existing proportionally adjustable multi-way valves have few flow path connection modes and are difficult to meet the use requirements of thermal management systems of new energy vehicles; the utility model provides a proportionally adjustable multi-way valve, which can achieve proportional adjustment of the corresponding flow paths while realizing flow path on-off switching, and has multiple flow path connection modes to meet the use requirements of thermal management systems of new energy vehicles.

[0005] The utility model is realized by the following technical solutions:

[0006] The utility model provides a proportionally adjustable multi-way valve, comprising: a valve body, wherein both ends of the valve body are closed, a valve cavity is arranged in the middle, a plurality of valve ports are distributed circumferentially at the bottom of the valve body, and each of the valve ports is connected to the valve cavity; a valve core, wherein the valve core can rotate around its own axis, the valve core is adapted to be arranged in the valve cavity, the valve core is provided with a plurality of flow channels, and the flow channel ports of each of the flow channels are arranged at the bottom of the valve core; a sealing gasket, wherein the sealing gasket is located between the bottom of the valve cavity and the bottom of the valve core, the sealing gasket can seal the gap between the valve core and the valve body, and the sealing gasket is provided with a plurality of guide ports, and each of the guide ports corresponds to each of the valve ports one by one; wherein, after the valve core is rotated by a preset angle, the flow channels on the valve core can connect the corresponding valve ports according to the corresponding flow path connection mode.

[0007] The utility model provides a proportionally adjustable multi-way valve, in which a valve core is arranged in a valve body closed at both ends, a plurality of flow channels are arranged on the valve core, a plurality of valve ports are arranged at the bottom of the valve body, a sealing gasket is arranged between the bottom of the valve and the bottom of the valve core, and a plurality of guide ports corresponding to the valve ports are arranged on the sealing gasket. When the valve core rotates a preset angle, the correspondence between the flow channels on the valve body and the valve ports is switched to control the opening / closing of the corresponding valve ports and / or adjust the connection between one valve port and another valve port. At the same time, the two valve ports can also be connected to the other valve port according to a set ratio to achieve proportional regulation. The utility model has a variety of flow path connection modes to meet the functional requirements of pipeline switching of thermal management systems of new energy vehicles.

[0008] Among them, the valve ports are distributed along the circumference of the valve body, and a sealing gasket is arranged between the bottom of the valve and the bottom of the valve core. On the one hand, it can prevent non-functional liquid cross-talk between the valve ports and ensure that the entire proportionally adjustable multi-way valve has good sealing performance. On the other hand, compared with the method of arranging the valve ports on the side wall of the valve body, the axial dimension of the valve body is small, which can reduce the installation height of the proportionally adjustable valve and reduce its requirements for installation space.

[0009] Therefore, the proportionally adjustable multi-way valve provided by the utility model can realize proportional adjustment of the corresponding flow path while realizing flow path on-off switching, and has multiple flow path connection modes to meet the use requirements of the thermal management system of new energy vehicles.

[0010] In an optional embodiment, a valve cover is further included, wherein the valve cover is arranged on the top of the valve body, and the valve cover can seal the valve cavity to facilitate the assembly of the multi-way valve.

[0011] In an optional embodiment, a compression spring is further included, which is arranged between the valve cover and the valve core. The compression spring can press the sealing gasket to the bottom of the valve cavity through the valve core so that the sealing gasket can work normally and ensure the sealing of the multi-way valve during use.

[0012] In an optional embodiment, a mounting hole is provided at the top of the valve core, and the mounting hole is coaxially arranged with the valve core. The lower end of the compression spring is inserted into the mounting hole to avoid radial displacement of the compression spring during use, thereby further ensuring the reliability of the sealing of the multi-way valve during use.

[0013] In an optional embodiment, nine valve ports are provided to form a nine-way valve, so as to ensure that the multi-way valve can meet the use requirements of the thermal management system of new energy vehicles.

[0014] In an optional embodiment, along the circumference of the valve body, the valve ports are the eighth valve port, the third valve port, the first valve port, the second valve port, the fourth valve port, the fifth valve port, the ninth valve port, the sixth valve port and the seventh valve port in clockwise order; in a preset mode, the second valve port is connected with the fourth valve port, the first valve port is connected with the fifth valve port, the third valve port is connected with the eighth valve port, and the ninth valve port is closed, which can meet the functional requirements of convection channel control required by the thermal management system of new energy vehicles under this control mode.

[0015] In an optional embodiment, after the valve core rotates along its own axis by a first preset angle, the second valve port is connected to the fourth valve port, the first valve port is connected to the third valve port, the fifth valve port is connected to the eighth valve port, the sixth valve port is connected to the seventh valve port, and the ninth valve port is closed to meet the functional requirements of the flow channel control required by the thermal management system of the new energy vehicle under this control mode.

[0016] In an optional embodiment, after the valve core rotates along its own axis by a second preset angle, the fourth valve port is connected with the fifth valve port, the second valve port is connected with the sixth valve port, the first valve port is connected with the third valve port, the seventh valve port is connected with the eighth valve port, and the ninth valve port is closed to meet the functional requirements of the flow channel control required by the thermal management system of new energy vehicles under this control mode.

[0017] In an optional embodiment, after the valve core rotates along its own axis by a third preset angle, the second valve port is connected to the sixth valve port, the first valve port is connected to the third valve port, the seventh valve port is connected to the eighth valve port, and the fifth valve port and the ninth valve port are connected to the fourth valve port in corresponding proportions to meet the functional requirements of the flow channel control required by the thermal management system of new energy vehicles under this control mode.

[0018] In an optional embodiment, after the valve core rotates along its own axis by a fourth preset angle, the fourth valve port is connected with the fifth valve port, the second valve port is connected with the eighth valve port, the first valve port is connected with the third valve port, the sixth valve port is connected with the seventh valve port, and the ninth valve port is closed to meet the functional requirements of the flow channel control required by the thermal management system of the new energy vehicle under this control mode.

[0019] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0020] 1. The proportionally adjustable multi-way valve provided by the utility model has a valve core arranged in a valve body with closed ends, and multiple flow channels are arranged on the valve core, and multiple valve ports are arranged at the bottom of the valve body. At the same time, a sealing gasket is arranged between the bottom of the valve and the bottom of the valve core, and multiple guide ports corresponding to the valve ports are arranged on the sealing gasket. When the valve core rotates a preset angle, the correspondence between the flow channel on the valve body and the valve port is switched to control the opening / closing of the corresponding valve port and / or adjust the connection between one valve port and another valve port. At the same time, the two valve ports can also be connected to the other valve port according to a set ratio to achieve proportional adjustment. It has multiple flow path connection modes and meets the functional requirements of pipeline switching of the thermal management system of new energy vehicles.

[0021] 2. The proportionally adjustable multi-way valve provided by the utility model has valve ports distributed along the circumference of the valve body, and a sealing gasket is arranged between the bottom of the valve and the bottom of the valve core. On the one hand, it can prevent non-functional liquid cross-talk between the valve ports and ensure that the entire proportionally adjustable multi-way valve has good sealing performance. On the other hand, compared with the method of arranging the valve ports on the side wall of the valve body, the axial dimension of the valve body is small, which can reduce the installation height of the proportionally adjustable valve and reduce its requirements for installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] In the attached picture:

[0024] Figure 1 This is a schematic diagram of the explosion structure of a proportionally adjustable multi-way valve according to an embodiment of the utility model;

[0025] Figure 2 This is a bottom view structural diagram of a proportionally adjustable multi-way valve in an initial state according to an embodiment of the utility model;

[0026] Figure 3This is a schematic diagram of the structure of a proportionally adjustable multi-way valve according to an embodiment of the utility model after it is rotated to a first preset angle and viewed from above;

[0027] Figure 4 This is a schematic diagram of the structure of a proportionally adjustable multi-way valve according to an embodiment of the utility model after it is rotated to a second preset angle and viewed from above;

[0028] Figure 5 This is a schematic diagram of the structure of a proportionally adjustable multi-way valve according to an embodiment of the utility model after it is rotated to a third preset angle and viewed from above;

[0029] Figure 6 This is a schematic diagram of the structure of a proportionally adjustable multi-way valve according to an embodiment of the utility model after it is rotated to a fourth preset angle and viewed from above;

[0030] Figure 7 This is a schematic diagram of the structure of a proportionally adjustable multi-way valve according to an embodiment of the utility model after it is rotated to a fifth preset angle and viewed from above;

[0031] Figure 8 This is a schematic diagram of the structure of a proportionally adjustable multi-way valve according to an embodiment of the utility model after rotating to a sixth preset angle and viewed from above.

[0032] Marks and corresponding parts names in the attached drawings:

[0033] 10-valve body, 11-valve chamber, 12a-first valve port, 12b-second valve port, 12c-third valve port, 12d-fourth valve port, 12e-fifth valve port, 12f-sixth valve port, 12g-seventh valve port, 12h-eighth valve port, 12i-ninth valve port, 20-valve core, 21-flow channel port, 22-mounting hole, 30-sealing gasket, 31-guide port, 40-valve cover, 50-compression spring. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the embodiments of the present application, the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is conventionally placed when in use, or is the orientation or position relationship conventionally understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Example

[0037] Combination Figure 1-Figure 8 The present embodiment provides a proportionally adjustable multi-way valve, comprising: a valve body 10, wherein both ends of the valve body 10 are closed, a valve cavity 11 is arranged in the middle, a plurality of valve ports are distributed on the circumference of the bottom of the valve body 10, and each of the valve ports is connected to the valve cavity 11; a valve core 20, wherein the valve core 20 can rotate around its own axis, the valve core 20 is adapted to be arranged in the valve cavity 11, the valve core 20 is provided with a plurality of flow channels, and the flow channel ports 21 of each of the flow channels are arranged at the bottom of the valve core 20; a sealing gasket 30, wherein the sealing gasket 30 is located between the bottom of the valve cavity 11 and the bottom of the valve core 20, the sealing gasket 30 can seal the gap between the valve core 20 and the valve body 10, and the sealing gasket 30 is provided with a plurality of guide ports 31, and each of the guide ports 31 corresponds to each of the valve ports one by one; wherein, after the valve core 20 rotates by a preset angle, the flow channels on the valve core 20 can connect the corresponding valve ports according to the corresponding flow path connection mode.

[0038] It is understandable that, in order to facilitate the processing of the valve cavity 11, the valve cavity 11 is usually made into a cylindrical shape, and the corresponding valve core 20 is also a cylindrical shape. A driving shaft is arranged at one end of the valve core 20 so as to facilitate the transmission connection between the output shaft of the driving motor and the valve core 20.

[0039] At the same time, a valve cover 40 is sealed at one end of the valve body 10, and the valve core 20 is rotatably connected to the valve cover 40, so that the valve core 20 is installed in the valve cavity 11 of the valve body 10 before the valve body 10 is sealed, and then the valve cover 40 is sealed to the valve body 10. That is, this embodiment also includes a valve cover 40, which is arranged on the top of the valve body 10, and the valve cover 40 can seal the valve cavity 11, so as to facilitate the assembly of the multi-way valve.

[0040] The position and size of the flow channel on the valve core 20 are determined according to the position of the valve port, the usage of the proportionally adjustable multi-way valve, and the functional requirements for the control of the flow channel.

[0041] It should be understood that the sealing gasket 30 is usually made of rubber material to ensure that it has sufficient sealing performance, such as EPDM rubber, nitrile rubber, and fluorosilicone rubber, and a wear-resistant material layer can be set on the end face of the sealing gasket 30 facing the valve core 20, such as a PTFE layer (polytetrafluoroethylene layer).

[0042] On this basis, the present embodiment also includes a compression spring 50, which is arranged between the valve cover 40 and the valve core 20. The compression spring 50 can press the sealing gasket 30 to the bottom of the valve cavity 11 through the valve core 20, so that the sealing gasket 30 can work normally and ensure the sealing of the multi-way valve during use.

[0043] Among them, a mounting hole 22 is set at the top of the valve core 20, and the mounting hole 22 is coaxially arranged with the valve core 20. The lower end of the compression spring 50 is inserted into the mounting hole 22 to avoid radial displacement of the compression spring 50 during use, thereby further ensuring the reliability of the sealing of the multi-way valve during use.

[0044] Combination Figure 2 , the valve ports are provided with 9 to form a nine-way valve, so as to ensure that the multi-way valve can meet the use requirements of the thermal management system of new energy vehicles. Specifically:

[0045] Combination Figure 2 , along the circumference of the valve body 10, the valve ports are the eighth valve port 12h, the third valve port 12c, the first valve port 12a, the second valve port 12b, the fourth valve port 12d, the fifth valve port 12e, the ninth valve port 12i, the sixth valve port 12f and the seventh valve port 12g in clockwise order. In a preset mode (determined according to the position of the valve core 20 relative to the valve body 10 during assembly), the second valve port 12b is connected to the fourth valve port 12d, the first valve port 12a is connected to the fifth valve port 12e, the third valve port 12c is connected to the eighth valve port 12h, and the ninth valve port 12i is closed, which can meet the functional requirements of the convection channel control required by the thermal management system of the new energy vehicle in this control mode (mode one);

[0046] Combination Figure 3 , after the valve core 20 rotates along its own axis by a first preset angle (rotates 135 degrees in the opposite direction on the basis of mode one, that is, the first preset angle is -135 degrees), the second valve port 12b is connected with the fourth valve port 12d, the first valve port 12a is connected with the third valve port 12c, the fifth valve port 12e is connected with the eighth valve port 12h, the sixth valve port 12f is connected with the seventh valve port 12g, and the ninth valve port 12i is closed, so as to meet the functional requirements of the convection channel control required by the thermal management system of the new energy vehicle under this control mode (mode two);

[0047] Combination Figure 4 , after the valve core 20 rotates along its own axis by a second preset angle (rotated 90 degrees on the basis of mode two, that is, the second preset angle is -45 degrees), the fourth valve port 12d is connected with the fifth valve port 12e, the second valve port 12b is connected with the sixth valve port 12f, the first valve port 12a is connected with the third valve port 12c, the seventh valve port 12g is connected with the eighth valve port 12h, and the ninth valve port 12i is closed, so as to meet the functional requirements of the convection channel control required by the thermal management system of the new energy vehicle in this control mode (mode three);

[0048] Combination Figure 5 After the valve core 20 rotates along its own axis by a third preset angle (reverse rotation of 0 to 22.5 degrees on the basis of mode three, that is, the third preset angle is -45 to -67.5 degrees), the second valve port 12b is connected with the sixth valve port 12f, the first valve port 12a is connected with the third valve port 12c, the seventh valve port 12g is connected with the eighth valve port 12h, and the fifth valve port 12e and the ninth valve port 12i are connected with the fourth valve port 12d in corresponding proportions to meet the functional requirements of the convection channel control required by the thermal management system of the new energy vehicle under this control mode (mode four).

[0049] Combination Figure 6 , after the valve core 20 rotates along its own axis by a fourth preset angle (reversing 22.5 degrees on the basis of mode three and then rotating 157.5 degrees, that is, the fourth preset angle is 90 degrees), the fourth valve port 12d is connected with the fifth valve port 12e, the second valve port 12b is connected with the eighth valve port 12h, the first valve port 12a is connected with the third valve port 12c, the sixth valve port 12f is connected with the seventh valve port 12g, and the ninth valve port 12i is closed, so as to meet the functional requirements of the convection channel control required by the thermal management system of the new energy vehicle under this control mode (mode five);

[0050] Combination Figure 7 , after the valve core 20 rotates along its own axis by a fifth preset angle (reversed by 0 to 22.5 degrees on the basis of mode five, that is, the fifth preset angle is 67.5 to 90 degrees), the second valve port 12b is connected to the eighth valve port 12h, the first valve port 12a is connected to the third valve port 12c, the seventh valve port 12g is connected to the sixth valve port 12f, and the fifth valve port 12e and the ninth valve port 12i are connected to the fourth valve port 12d in a corresponding proportion, so as to meet the functional requirements of the convection channel control required by the thermal management system of the new energy vehicle under this control mode (mode six);

[0051] Combination Figure 8After the valve core 20 rotates along its own axis by the fifth preset angle (reversing 22.5 degrees on the basis of mode six and then rotating in the opposite direction by 157.5 degrees, that is, the fifth preset angle is -90 degrees), the first valve port 12a is connected with the second valve port 12b, the fourth valve port 12d is connected with the seventh valve port 12g, the third valve port 12c is connected with the eighth valve port 12h, the fifth valve port 12e is connected with the sixth valve port 12f, and the ninth valve port 12i is closed to meet the functional requirements of the flow channel control required by the thermal management system of the new energy vehicle under this control mode (mode seven).

[0052] It should be noted that, for the closure of the valve port, the portion of the valve core 20 facing the valve port can be a solid or a notch smaller than or equal to the corresponding interface. For the connection between the valve ports, the corresponding portion of the valve core 20 can be sunken to form a groove communicating with the corresponding valve port, or a channel can be set inside the valve core 20, and the two ends of the channel are set facing the corresponding valve port.

[0053] In summary, the proportionally adjustable multi-way valve provided in the present embodiment has a valve core 20 arranged in a valve body 10 with closed ends, and multiple flow channels are arranged on the valve core 20, and multiple valve ports are arranged at the bottom of the valve body 10. At the same time, a sealing gasket 30 is arranged between the bottom of the valve and the bottom of the valve core 20, and multiple guide ports 31 corresponding to the valve ports are arranged on the sealing gasket 30. When the valve core 20 rotates a preset angle, the correspondence between the flow channel on the valve body 10 and the valve port 12 is switched to control the opening / closing of the corresponding valve port and / or adjust the connection between one valve port and another valve port. At the same time, the two valve ports can also be connected to the other valve port at a set ratio to achieve proportional adjustment. It has multiple flow path connection modes and meets the functional requirements of pipeline switching of the thermal management system of new energy vehicles.

[0054] Among them, the valve ports are distributed along the circumference of the valve body 10, and a sealing gasket 30 is arranged between the bottom of the valve and the bottom of the valve core 20. On the one hand, it can prevent non-functional liquid cross-flow between the valve ports and ensure that the entire proportionally adjustable multi-way valve has good sealing performance. On the other hand, compared with the method of arranging the valve ports on the side wall of the valve body 10, the axial dimension of the valve body 10 is small, which can reduce the proportionally adjustable installation height and reduce its requirements for installation space.

[0055] In summary, the proportionally adjustable multi-way valve provided in this embodiment can realize proportional adjustment of the corresponding flow paths while realizing on-off switching of the flow paths, and has multiple flow path connection modes to meet the use requirements of the thermal management system of new energy vehicles.

[0056] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A proportionally adjustable multi-way valve, characterized in that: include: A valve body (10), wherein both ends of the valve body (10) are closed and a valve cavity (11) is provided in the middle thereof, and a plurality of valve ports are distributed around the bottom circumference of the valve body (10), and each of the valve ports is in communication with the valve cavity (11); A valve core (20), the valve core (20) being rotatable around its own axis, the valve core (20) being adapted to be arranged in the valve cavity (11), the valve core (20) being provided with a plurality of flow channels, and the flow channel openings (21) of the flow channels are all arranged at the bottom of the valve core (20); a sealing gasket (30), the sealing gasket (30) being located between the bottom of the valve cavity (11) and the bottom of the valve core (20), the sealing gasket (30) being capable of sealing a gap between the valve core (20) and the valve body (10), and the sealing gasket (30) being provided with a plurality of guide ports (31), each of the guide ports (31) corresponding to each of the valve ports one by one; Wherein, after the valve core (20) rotates by a preset angle, the flow channels on the valve core (20) can all connect the corresponding valve ports according to the corresponding flow path connection mode.

2. The proportionally adjustable multi-way valve according to claim 1, characterized in that: It also comprises a valve cover (40), wherein the valve cover (40) is arranged on the top of the valve body (10), and the valve cover (40) is capable of sealing the valve cavity (11).

3. The proportionally adjustable multi-way valve according to claim 2, characterized in that: The valve body also includes a compression spring (50), which is arranged between the valve cover (40) and the valve core (20). The compression spring (50) can press the sealing gasket (30) against the bottom of the valve cavity (11) through the valve core (20).

4. The proportionally adjustable multi-way valve according to claim 3, characterized in that: The top of the valve core (20) is provided with a mounting hole (22), the mounting hole (22) is coaxially arranged with the valve core (20), and the lower end of the compression spring (50) is inserted into the mounting hole (22).

5. The proportionally adjustable multi-way valve according to claim 1, characterized in that: The valve ports are provided in nine numbers.

6. The proportionally adjustable multi-way valve according to claim 5, characterized in that: Along the circumference of the valve body (10), the valve ports are arranged clockwise as an eighth valve port (12h), a third valve port (12c), a first valve port (12a), a second valve port (12b), a fourth valve port (12d), a fifth valve port (12e), a ninth valve port (12i), a sixth valve port (12f) and a seventh valve port (12g); In a preset mode, the second valve port (12b) is connected to the fourth valve port (12d), the first valve port (12a) is connected to the fifth valve port (12e), the third valve port (12c) is connected to the eighth valve port (12h), and the ninth valve port (12i) is closed.

7. The proportionally adjustable multi-way valve according to claim 6, characterized in that: After the valve core (20) rotates along its own axis by a first preset angle, the second valve port (12b) is connected to the fourth valve port (12d), the first valve port (12a) is connected to the third valve port (12c), the fifth valve port (12e) is connected to the eighth valve port (12h), the sixth valve port (12f) is connected to the seventh valve port (12g), and the ninth valve port (12i) is closed.

8. The proportionally adjustable multi-way valve according to claim 6, characterized in that: After the valve core (20) rotates along its own axis by a second preset angle, the fourth valve port (12d) is connected to the fifth valve port (12e), the second valve port (12b) is connected to the sixth valve port (12f), the first valve port (12a) is connected to the third valve port (12c), the seventh valve port (12g) is connected to the eighth valve port (12h), and the ninth valve port (12i) is closed.

9. The proportionally adjustable multi-way valve according to claim 6, characterized in that: After the valve core (20) rotates along its own axis by a third preset angle, the second valve port (12b) is connected to the sixth valve port (12f), the first valve port (12a) is connected to the third valve port (12c), the seventh valve port (12g) is connected to the eighth valve port (12h), and the fifth valve port (12e) and the ninth valve port (12i) are connected to the fourth valve port (12d) in corresponding proportions.

10. The proportionally adjustable multi-way valve according to claim 6, characterized in that: After the valve core (20) rotates along its own axis by a fourth preset angle, the fourth valve port (12d) is connected to the fifth valve port (12e), the second valve port (12b) is connected to the eighth valve port (12h), the first valve port (12a) is connected to the third valve port (12c), the sixth valve port (12f) is connected to the seventh valve port (12g), and the ninth valve port (12i) is closed.

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