CN217177518U

CN217177518U - Multi-way valve

Info

Publication number: CN217177518U
Application number: CN202220441674.5U
Authority: CN
Inventors: 王俊杰; 沙海建; 王傅钢
Original assignee: Dunan Automotive Thermal Management Technology Co Ltd
Current assignee: Dunan Automotive Thermal Management Technology Co Ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-08-12
Anticipated expiration: 2032-03-01

Abstract

The utility model provides a multi-way valve, it includes: a valve housing having a receiving chamber and an opening communicating with each other; the end cover is arranged at the opening of the valve shell; the valve core is rotatably arranged in the accommodating cavity; the rotation stopping structure is arranged between the valve shell and the valve core and used for limiting the rotation angle of the valve core in the valve shell. Through the technical scheme that this application provided, can solve the problem of the easy damage of end cover of the multi-ported valve among the prior art.

Description

Multi-way valve

Technical Field

The utility model relates to the technical field of valves, particularly, relate to a multi-ported valve.

Background

The existing multi-way valve generally includes a valve housing, an end cap, a valve core, and a driving mechanism, wherein the end cap is disposed at an end portion of the valve housing, the valve housing has a cavity for accommodating the valve core, the valve core is rotatably disposed in the cavity, and the driving mechanism is drivingly connected to the valve core to switch the multi-way valve between a plurality of operating states. The multi-way valve generally further includes a first rotation stop portion and a second rotation stop portion, which are respectively disposed on an end portion and an end cover of the valve core, and the first rotation stop portion and the second rotation stop portion cooperate to limit a rotation angle of the valve core. When the valve core rotates, the valve core rotates to drive the first rotation stopping part to rotate, and when the first rotation stopping part is contacted with the second rotation stopping part, the valve core stops rotating. By adopting the technical scheme, when the first rotation stopping part is in contact with the second rotation stopping part, the first rotation stopping part generates a larger acting force on the second rotation stopping part, and the second rotation stopping part is arranged on the end cover, so that the acting force acting on the second rotation stopping part can be transmitted to the end cover, and after long-time use, the condition that the end cover is damaged can occur, and the service life of the multi-way valve is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a multi-way valve to solve the problem of the easy damage of end cover among the prior art.

The utility model provides a multi-way valve, it includes: a valve housing having a receiving chamber and an opening communicating with each other; the end cover is arranged at the opening of the valve shell; the valve core is rotatably arranged in the accommodating cavity; the rotation stopping structure is arranged between the valve shell and the valve core and used for limiting the rotation angle of the valve core in the valve shell.

Use the technical scheme of the utility model, through setting up the structure of splining, can restrict the turned angle of case in the valve casing to make the case at predetermineeing angle within range internal rotation, guarantee case pivoted accuracy, and then can switch over each other between a plurality of operating condition smoothly with guaranteeing the multi-ported valve. Specifically, this scheme will only rotate the structure setting between valve casing and case, when only rotating the turned angle of structure to the case and restricting, only rotate the effort of structure and transmit to valve casing and case on, will only rotate the structure setting with traditional technical scheme and compare on the end cover of multi-way valve and case, the ability that bears the effort of valve casing will be superior to the ability that bears the effort of end cover, the impaired probability of valve casing is less than the impaired probability of end cover, device overall structure intensity is higher, and then can guarantee the life of multi-way valve.

Further, the rotation stopping structure comprises: a first rotation stop part arranged at the end part of the valve core; the second rotation stopping portion is arranged on the valve shell and located in the accommodating cavity, the second rotation stopping portion is provided with a first side face and a second side face which are arranged oppositely along the rotation direction of the valve core, and the first rotation stopping portion can be in limit fit with the first side face and the second side face to limit the rotation angle of the valve core. So set up, can promote the first convenience of splines portion and the cooperation of second spline portion. And the first side surface and the second side surface are in surface contact with the first rotation stopping part, so that the contact area of the first rotation stopping part and the second rotation stopping part can be ensured, and the structural strength of the first rotation stopping part and the second rotation stopping part in mutual contact is ensured.

Further, the second rotation stopping portion is detachably connected with the valve casing. So set up, can promote the convenience to multi-way valve assembling process to, can realize being connected between the second rotation stopping portion of different specifications and the valve casing, and then realize the injecing to the different turned angle of case, promote multi-way valve's adaptability.

Further, the second rotation preventing portion includes: the connecting part is detachably connected with the valve shell and is positioned on the periphery of the valve core; the abutting portion is arranged on the connecting portion, the abutting portion and the connecting portion are distributed along the radial direction of the valve shell, the abutting portion is located at one end of the valve core, and the abutting portion is in limit fit with the first rotation stopping portion. So set up, can guarantee multi-ported valve's compact structure nature.

Furthermore, an axial positioning structure is arranged between the valve shell and the connecting part, and the axial positioning structure can position the axial position of the connecting part on the valve shell; and/or a circumferential positioning structure is further arranged between the valve shell and the connecting part and used for positioning the circumferential position of the connecting part on the valve shell. Axial location portion and circumference location fit can fix a position the second portion of splines on the valve casing, and then can avoid only rotating the portion and install the second on the valve casing through extra fastener, guarantee the structural strength that the second portion of splines.

Furthermore, two positioning protrusions are arranged on the inner wall of the valve shell, are distributed at intervals along the circumferential direction of the valve shell and are positioned on the periphery of the valve core, and a clamping gap is formed between the two positioning protrusions; the connecting part extends along the circumferential direction of the valve shell and comprises a first positioning part and a second positioning part which are sequentially arranged along the axis direction of the valve shell, the first positioning part is provided with a first end and a second end which are oppositely arranged along the circumferential direction of the valve shell, the second positioning part is provided with a third end and a fourth end which are oppositely arranged, the third end is arranged close to the first end, the fourth end is arranged close to the second end, the first end and the second end correspondingly protrude the third end and the fourth end along the circumferential direction of the valve shell, and the side surfaces of the first end and the second end facing the second positioning part are abutted with the positioning protrusions to form an axial positioning structure; the second positioning part is positioned in the clamping gap, and two ends of the second positioning part are in interference fit with the two positioning protrusions respectively to form a circumferential positioning structure. Above-mentioned setting, its simple structure, and conveniently assemble second rotation stopping portion.

Further, the terminal surface of third end and fourth end all has interconnect's spacing face and cooperation inclined plane, and spacing face and cooperation inclined plane set up along the axis direction of valve casing, and spacing face is close to first location portion and sets up, and the circumference size on two cooperation inclined planes of third end and fourth end reduces gradually towards the direction of keeping away from first location portion. So set up, can promote the smooth and easy nature of the assembly of second rotation stopping portion.

Further, the positioning boss is formed by a side wall of the valve housing being recessed toward the accommodation chamber. So set up, can promote the convenience to valve casing processing.

Further, the second rotation stopping portion is provided with a weight reduction structure. The arrangement of the weight reduction structure can reduce raw materials in the process of processing the second rotation stopping part, and save the processing cost.

Furthermore, a plurality of valve ports are formed in the side wall of the valve casing and communicated with the accommodating cavity, a plurality of circulation channels are formed in the side wall of the valve core, and the valve ports and the circulation channels are arranged in a one-to-one correspondence mode.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural view of a multi-way valve provided by the present invention;

FIG. 2 illustrates an exploded view of the multi-way valve provided by the present invention;

fig. 3 shows a schematic structural diagram of a second rotation stop portion provided by the present invention;

fig. 4 is a schematic structural view illustrating another view angle of the second rotation stop portion provided by the present invention;

fig. 5 shows a front view of a second rotation stop provided by the present invention;

fig. 6 shows a schematic structural diagram of a valve housing provided by the present invention;

fig. 7 shows a schematic structural diagram of the matching of the valve core and the valve housing provided by the present invention.

Wherein the figures include the following reference numerals:

10. a valve housing; 101. an accommodating chamber; 102. a valve port;

11. a positioning boss;

20. a valve core; 201. a flow-through channel;

30. a first rotation stop portion;

40. a second rotation stop portion; 401. a first side surface; 402. a second side surface; 403. a weight reduction structure;

41. a connecting portion;

411. a first positioning portion; 4111. a first end; 4112. a second end;

412. a second positioning portion; 4121. a third end; 4122. a fourth end; 4123. a limiting surface; 4124. a mating bevel;

42. an abutting portion;

43. a transition connection; 431. a fifth end; 432. and a sixth end.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 7, the utility model provides a multi-way valve, it includes: valve housing 10, end cap, valve core 20 and rotation stopping structure. In which the valve housing 10 has a receiving cavity 101 and an opening communicating with each other. The end cap is provided at the opening of the valve housing 10. The valve spool 20 is rotatably disposed in the accommodation chamber 101. The rotation stopping structure is disposed between the valve housing 10 and the valve core 20, and the rotation stopping structure is used for limiting a rotation angle of the valve core 20 in the valve housing 10.

Use the technical scheme of the utility model, through setting up the structure of splining, can restrict the turned angle of case 20 in valve casing 10 to make case 20 predetermine the angular range internal rotation, guarantee case 20 pivoted accuracy, and then can switch over each other between a plurality of operating condition smoothly with guaranteeing the multi-ported valve. Specifically, this scheme will only rotate the structure setting between valve casing 10 and case 20, when only rotating the structure and restricting the turned angle of case 20, only rotate the effort of structure and transmit to valve casing 10 and case 20 on, will only rotate the structure setting with traditional technical scheme and compare between the end cover of multi-way valve and case 20, the ability that will be superior to the end cover of the ability that bears the effort of valve casing 10, the impaired probability of valve casing 10 is less than the impaired probability of end cover, device overall structure intensity is higher, and then can guarantee the life of multi-way valve. And, above-mentioned setting can avoid when assembling to end cover and valve casing 10, the condition that the end cover produced the interference is only rotated to the structure, promotes the convenience of assembling the end cover.

As shown in fig. 1 to 3, the rotation stop structure includes a first rotation stop portion 30 and a second rotation stop portion 40. The first detent portion 30 is provided at an end of the valve body 20. The second rotation preventing portion 40 is disposed on the valve housing 10, the second rotation preventing portion 40 is located in the accommodating cavity 101, the second rotation preventing portion 40 has a first side surface 401 and a second side surface 402 which are oppositely disposed along the rotation direction of the valve core 20, and the first rotation preventing portion 30 can be in limit-limit fit with the first side surface 401 and the second side surface 402 to limit the rotation angle of the valve core 20. When the multi-way valve works, the valve core 20 rotates to drive the first rotation stopping portion 30 to rotate, and after the valve core 20 rotates to a preset angle, the first rotation stopping portion 30 contacts with the first side surface 401 or the second side surface 402 of the second rotation stopping portion 40, and the valve core 20 stops rotating. Specifically, a certain gap is formed between the valve core 20 and the inner wall of the valve housing 10, and the first rotation preventing portion 30 is disposed at the end of the valve core 20, so that the first rotation preventing portion 30 can be prevented from occupying the gap between the valve core 20 and the valve housing 10, and the structural compactness of the whole multi-way valve can be ensured.

Further, the second rotation preventing part 40 is detachably connected to the valve housing 10. With this arrangement, the interference of the second rotation stopping portion 40 to the valve body 20 and the valve housing 10 can be avoided, and the convenience of assembling the valve housing 10 and the valve body 20 can be improved. Moreover, since the rotation angle of the valve core 20 is limited by the first side surface 401 and the second side surface 402 of the second rotation stop portion 40, when the rotation angle of the valve core 20 needs to be changed, the second rotation stop portion 40 with different specifications and sizes can be replaced, so that the rotation angle of the valve core 20 can be wider, and the adaptability of the multi-way valve is improved.

Further, the first rotation stopping portion 30 is fixedly connected to the end portion of the valve core 20, and the first rotation stopping portion 30 and the end portion of the valve core 20 are integrally formed. With the arrangement, the stability of connection between the first rotation stopping portion 30 and the valve core 20 can be ensured, and the convenience of processing the first rotation stopping portion 30 and the valve core 20 can be ensured.

Alternatively, the first rotation preventing part 30 is detachably connected to the end of the valve spool 20. Wherein, the connection can be dismantled to the mode of accessible joint or fastener, and this scheme does not do the restriction to the concrete mode of dismantling the connection. With such an arrangement, the flexibility of the mutual matching of the first rotation stopping portion 30 and the first rotation stopping portion 30 can be improved.

As shown in fig. 1 to 5, the second rotation stopper 40 includes a connecting portion 41 and an abutting portion 42. Wherein the connection portion 41 is detachably connected to the valve housing 10 and is located at the outer circumference of the valve core 20. The abutting portion 42 is disposed on the connecting portion 41, the abutting portion 42 and the connecting portion 41 are distributed along the radial direction of the valve housing 10, the abutting portion 42 is located at one end of the valve core 20, and the abutting portion 42 is in limit fit with the first rotation stop portion 30. Specifically, the second rotation stop portion 40 extends in the circumferential direction of the valve housing 10, and the second rotation stop portion 40, the valve core 20, and the valve housing 10 are coaxially disposed. The connecting portion 41 is located between the clearance between the valve element 20 and the valve housing 10. Furthermore, along the axial direction of the valve housing 10, the connecting portion 41 has a first top end and a first bottom end which are oppositely arranged, and the abutting portion 42 has a second top end and a second bottom end which are oppositely arranged, wherein the first top end and the second top end are flush with each other, the first bottom end is arranged to protrude from the second bottom end, and the first bottom end of the connecting portion 41 is located between the gap between the valve core 20 and the valve housing 10. With the above arrangement, the gap between the inner peripheral surface of the valve housing 10 and the peripheral surface of the valve element 20 is utilized reasonably, and the structural compactness of the multi-way valve is ensured. And, so set up for when assembling the multi-ported valve, can assemble back in valve casing 10 earlier with case 20, install connecting portion 41 to valve casing 10 again on, guarantee the convenience to the multi-ported valve assembly.

Further, an axial positioning structure is provided between the valve housing 10 and the connection portion 41, and the axial positioning structure can position the axial position of the connection portion 41 on the valve housing 10. A circumferential positioning structure is further provided between the valve housing 10 and the connecting portion 41, and the circumferential positioning structure is used for positioning the circumferential position of the connecting portion 41 on the valve housing 10. Because the second rotation stopping part 40 and the valve casing 10 are of a split structure, the stability of assembly between the second rotation stopping part 40 and the valve casing 10 can be guaranteed due to the arrangement of the axial positioning structure and the circumferential positioning structure, and the working stability of the multi-way valve can be further guaranteed.

As shown in fig. 1 and 6, two positioning protrusions 11 are provided on the inner wall of the valve housing 10, the two positioning protrusions 11 are spaced apart from each other in the circumferential direction of the valve housing 10 and are located at the outer periphery of the valve element 20, and a clamping gap is formed between the two positioning protrusions 11. The connecting portion 41 extends in the circumferential direction of the valve housing 10, and the connecting portion 41 includes a first positioning portion 411 and a second positioning portion 412 that are sequentially provided in the axial direction of the valve housing 10, and the outer peripheral surfaces of the first positioning portion 411 and the second positioning portion 412 are both in contact with the inner peripheral surface of the valve housing 10. Along the circumference of valve casing 10, first location portion 411 has relative first end 4111 and second end 4112 that sets up, and second location portion 412 has relative third end 4121 and fourth end 4122 that sets up, and third end 4121 is close to first end 4111 and sets up, and fourth end 4122 is close to second end 4112 and sets up, and first end 4111 and second end 4112 correspond protruding third end 4121 and fourth end 4122 in the circumference of valve casing 10, and the side of first end 4111 and second end 4112 towards second location portion 412 is with location bellying 11 butt joint and form axial positioning structure. Moreover, the second positioning portion 412 is located in the clamping gap, and two ends of the second positioning portion 412 are respectively in interference fit with the two positioning protrusions 11 to form a circumferential positioning structure. When the second rotation preventing portion 40 is mounted, the second positioning portion 412 is inserted into the engaging gap until the first positioning portion 411 abuts against the two positioning protrusions 11. Above-mentioned setting for when installing second rotation stopping portion 40 and valve casing 10, need not fix second rotation stopping portion 40 and valve casing 10 through extra fastener, and then can further guarantee the second rotation stopping portion 40 and the structural strength of valve casing 10, guarantee the life of multi-ported valve. In addition, the second rotation preventing portion 40 and the valve housing 10 can be easily assembled.

Further, the end surfaces of the third end 4121 and the fourth end 4122 are respectively provided with a limiting surface 4123 and a matching inclined surface 4124 which are connected with each other, the limiting surface 4123 and the matching inclined surface 4124 are arranged along the axial direction of the valve housing 10, the limiting surface 4123 is arranged close to the first positioning portion 411, and the circumferential dimensions of the two matching inclined surfaces 4124 of the third end 4121 and the fourth end 4122 are gradually reduced towards the direction far away from the first positioning portion 411. Specifically, the limiting surface 4123 is in abutting fit with the positioning protruding portion 11, and a certain gap is provided between the fitting inclined surface 4124 and the positioning protruding portion 11. So set up, conveniently insert second location portion 412 and establish to the joint clearance between two location bellying 11.

Further, the abutting portion 42 is located at the center of the connecting portion 41 in the circumferential extending direction, and the abutting portion 42 is provided on the inner circumferential surface of the first positioning portion 411. So set up for second rotation stopping portion 40 is a symmetrical structure, and then can guarantee the homogeneity of second rotation stopping portion 40 atress, guarantees the life of second rotation stopping portion 40.

As shown in fig. 4, the second rotation preventing portion 40 further includes a transition connecting portion 43, the transition connecting portion 43 is disposed between the contact portion 42 and the first positioning portion 411, and the contact portion 42, the transition connecting portion 43 and the first positioning portion 411 are integrally formed. In the circumferential direction of the valve housing 10, the transition connection portion 43 has a fifth end 431 and a sixth end 432 that are oppositely arranged, the fifth end 431 extends to the first end 4111 of the first positioning portion 411, and the sixth end 432 extends to the second end 4112 of the first positioning portion 411. Along the axial direction of valve casing 10, transition connecting portion 43 has third top and the third bottom that sets up relatively, and the third top of transition connecting portion 43 and the second top of butt portion 42 are flush, and the third bottom of transition connecting portion 43 and the second bottom of butt portion 42 set up flush, and the height of transition connecting portion 43 along the axial direction is less than the height along the axial direction of first locating portion 411. So set up, can promote the thickness at the top of second rotation stopping portion 40, further guarantee the structural strength of second rotation stopping portion 40.

As shown in fig. 2, the positioning boss 11 is formed by a side wall of the valve housing 10 being recessed toward the accommodation chamber 101. So set up, conveniently carry out machine-shaping to valve casing 10.

Alternatively, the positioning boss 11 is provided on the inner circumferential surface of the valve housing 10, and the positioning boss 11 and the valve housing 10 are of an integrally molded structure.

As shown in fig. 3 and 4, the second rotation stopper 40 is provided with a weight reduction structure 403. In this embodiment, a plurality of first weight-reducing grooves are formed at intervals on the outer circumferential surface of the connecting portion 41, and the plurality of first weight-reducing grooves form the weight-reducing structure 403. A second lightening groove is provided in an end surface of the second tip of the abutment portion 42, and the second lightening groove forms the lightening structure 403. The arrangement of the weight reduction structure can save raw materials of the second rotation stopping portion 40, facilitate the processing and forming of the second rotation stopping portion 40, and increase the structural strength of the second rotation stopping portion 40.

As shown in fig. 1, 2, 6 and 7, a plurality of valve ports 102 are provided on a side wall of the valve housing 10, the plurality of valve ports 102 communicate with the accommodating chamber 101, a plurality of flow channels 201 are provided on a side wall of the valve element 20, and the valve ports 102 and the flow channels 201 are provided in one-to-one correspondence.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and 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 interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …", "above … …", "above … …", "above", and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-way valve, comprising:

a valve housing (10) having a receiving chamber (101) and an opening communicating with each other;

an end cap provided at an opening of the valve housing (10);

a valve core (20) rotatably arranged in the accommodating cavity (101);

the rotation stopping structure is arranged between the valve shell (10) and the valve core (20) and is used for limiting the rotation angle of the valve core (20) in the valve shell (10).

2. The multi-way valve of claim 1, wherein the anti-rotation structure comprises:

a first rotation stop portion (30) provided at an end portion of the valve body (20);

the second rotation stopping portion (40) is arranged on the valve shell (10), the second rotation stopping portion (40) is located in the accommodating cavity (101), the second rotation stopping portion (40) is provided with a first side surface (401) and a second side surface (402) which are oppositely arranged along the rotation direction of the valve core (20), and the first rotation stopping portion (30) can be in limit fit with the first side surface (401) and the second side surface (402) to limit the rotation angle of the valve core (20).

3. The multi-way valve according to claim 2, wherein the second rotation stop (40) is detachably connected to the valve housing (10).

4. The multi-way valve according to claim 3, wherein the second rotation stop (40) comprises:

a connecting portion (41) detachably connected to the valve housing (10) and located on the outer periphery of the valve element (20);

the abutting part (42) is arranged on the connecting part (41), the abutting part (42) and the connecting part (41) are distributed along the radial direction of the valve shell (10), the abutting part (42) is located at one end of the valve core (20), and the abutting part (42) is in limit fit with the first rotation stopping part (30).

5. The multi-way valve of claim 4,

an axial positioning structure is arranged between the valve shell (10) and the connecting part (41), and can position the axial position of the connecting part (41) on the valve shell (10);

and/or a circumferential positioning structure is further arranged between the valve shell (10) and the connecting part (41), and the circumferential positioning structure is used for positioning the circumferential position of the connecting part (41) on the valve shell (10).

6. The multi-way valve of claim 5,

two positioning protrusions (11) are arranged on the inner wall of the valve shell (10), the two positioning protrusions (11) are distributed at intervals along the circumferential direction of the valve shell (10) and are positioned on the periphery of the valve core (20), and a clamping gap is formed between the two positioning protrusions (11);

the connecting portion (41) extends along the circumferential direction of the valve housing (10), and the connecting portion (41) includes a first positioning portion (411) and a second positioning portion (412) sequentially arranged along the axial direction of the valve housing (10), along the circumferential direction of the valve housing (10), the first positioning portion (411) has a first end (4111) and a second end (4112) which are oppositely arranged, the second positioning portion (412) has a third end (4121) and a fourth end (4122) which are oppositely arranged, the third end (4121) is arranged close to the first end (4111), the fourth end (4122) is arranged close to the second end (4112), the first end (4111) and the second end (4112) correspondingly protrude the third end (4121) and the fourth end (4122) in the circumferential direction of the valve housing (10), the side surfaces of the first end (4111) and the second end (4112) facing the second positioning portion (412) abut against the positioning protrusion (11) and form the positioning protrusion An axial positioning structure;

the second positioning portion (412) is located in the clamping gap, and two ends of the second positioning portion (412) are in interference fit with the two positioning protrusions (11) respectively to form the circumferential positioning structure.

7. The multi-way valve according to claim 6, wherein the end faces of the third end (4121) and the fourth end (4122) each have a stop face (4123) and a mating inclined face (4124) connected to each other, the stop face (4123) and the mating inclined face (4124) being arranged in the axial direction of the valve housing (10), and the stop face (4123) being arranged close to the first positioning portion (411), the circumferential dimensions of the two mating inclined faces (4124) of the third end (4121) and the fourth end (4122) decreasing gradually towards the direction away from the first positioning portion (411).

8. The multi-way valve according to claim 6, characterized in that the positioning projection (11) is formed by a side wall of the valve housing (10) recessed towards the receiving cavity (101).

9. The multi-way valve according to claim 2, wherein the second rotation stop (40) is provided with a weight-reducing structure (403).

10. The multi-way valve according to claim 1, wherein a plurality of valve ports (102) are arranged on the side wall of the valve casing (10), the plurality of valve ports (102) are communicated with the accommodating cavity (101), a plurality of circulation channels (201) are arranged on the side wall of the valve core (20), and the valve ports (102) and the circulation channels (201) are arranged in a one-to-one correspondence manner.